b71aeaea93
consistent state. This includes the relevant part of bug 257868, all of bug 367650, bug 362901 (bug 372550 in the CVS comments on trunk), bug 379383, bug 379799, and the notation in bug 362901's status whiteboard. r+sr=dbaron, a=dveditz git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@232866 18797224-902f-48f8-a5cc-f745e15eee43
6708 lines
233 KiB
C++
6708 lines
233 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Robert O'Callahan <roc+moz@cs.cmu.edu>
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Prabhat Hegde <prabhat.hegde@sun.com>
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* Tomi Leppikangas <tomi.leppikangas@oulu.fi>
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* Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
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* Daniel Glazman <glazman@netscape.com>
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* Neil Deakin <neil@mozdevgroup.com>
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* Masayuki Nakano <masayuki@d-toybox.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
|
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsHTMLParts.h"
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#include "nsCRT.h"
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|
#include "nsSplittableFrame.h"
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#include "nsLineLayout.h"
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|
#include "nsString.h"
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|
#include "nsUnicharUtils.h"
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|
#include "nsPresContext.h"
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|
#include "nsIContent.h"
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|
#include "nsStyleConsts.h"
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|
#include "nsStyleContext.h"
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|
#include "nsCoord.h"
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|
#include "nsIFontMetrics.h"
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|
#include "nsIRenderingContext.h"
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|
#include "nsIPresShell.h"
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|
#include "nsIView.h"
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|
#include "nsIViewManager.h"
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|
#include "nsITimer.h"
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|
#include "prtime.h"
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|
#include "nsVoidArray.h"
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|
#include "prprf.h"
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|
#include "nsIDOMText.h"
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|
#include "nsIDocument.h"
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|
#include "nsIDeviceContext.h"
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|
#include "nsICaret.h"
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|
#include "nsCSSPseudoElements.h"
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|
#include "nsILineBreaker.h"
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|
#include "nsIWordBreaker.h"
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|
#include "nsCompatibility.h"
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|
#include "nsCSSColorUtils.h"
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|
|
|
#include "nsITextContent.h"
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|
#include "nsTextFragment.h"
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|
#include "nsTextTransformer.h"
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|
#include "nsHTMLAtoms.h"
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|
#include "nsLayoutAtoms.h"
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|
#include "nsIFrameSelection.h"
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|
#include "nsISelection.h"
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|
#include "nsIDOMRange.h"
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|
#include "nsILookAndFeel.h"
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|
#include "nsCSSRendering.h"
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|
#include "nsContentUtils.h"
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|
|
#include "nsILineIterator.h"
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|
|
|
#include "nsCompressedCharMap.h"
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|
|
#include "nsIServiceManager.h"
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|
#ifdef ACCESSIBILITY
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|
#include "nsIAccessible.h"
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|
#include "nsIAccessibilityService.h"
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#endif
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#include "nsGUIEvent.h"
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|
#include "nsAutoPtr.h"
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|
#include "nsStyleSet.h"
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|
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#include "nsBidiFrames.h"
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#include "nsBidiPresUtils.h"
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#include "nsBidiUtils.h"
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#ifdef SUNCTL
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#include "nsILE.h"
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static NS_DEFINE_CID(kLECID, NS_ULE_CID);
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#endif /* SUNCTL */
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#ifdef NS_DEBUG
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#undef NOISY_BLINK
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#undef DEBUG_WORD_WRAPPING
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|
#undef NOISY_REFLOW
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|
#undef NOISY_TRIM
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|
#else
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#undef NOISY_BLINK
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#undef DEBUG_WORD_WRAPPING
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#undef NOISY_REFLOW
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|
#undef NOISY_TRIM
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#endif
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|
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// #define DEBUGWORDJUMP
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|
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#define kSZLIG 0x00DF
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//----------------------------------------------------------------------
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|
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#define TEXT_BUF_SIZE 100
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|
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//----------------------------------------
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// checks to see if the text can be lightened..
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// text is darkend
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inline PRBool CanDarken(nsPresContext* aPresContext)
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{
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PRBool darken;
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if (aPresContext->GetBackgroundColorDraw()) {
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darken = PR_FALSE;
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} else {
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if (aPresContext->GetBackgroundImageDraw()) {
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darken = PR_FALSE;
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} else {
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darken = PR_TRUE;
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}
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}
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return darken;
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}
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|
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struct nsAutoIndexBuffer {
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nsAutoIndexBuffer();
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~nsAutoIndexBuffer();
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|
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nsresult GrowTo(PRInt32 aAtLeast);
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PRInt32* mBuffer;
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PRInt32 mBufferLen;
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PRInt32 mAutoBuffer[TEXT_BUF_SIZE];
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};
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nsAutoIndexBuffer::nsAutoIndexBuffer()
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: mBuffer(mAutoBuffer),
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mBufferLen(TEXT_BUF_SIZE)
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{
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#ifdef DEBUG
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memset(mAutoBuffer, 0xdd, sizeof(mAutoBuffer));
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#endif
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}
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nsAutoIndexBuffer::~nsAutoIndexBuffer()
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|
{
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if (mBuffer && (mBuffer != mAutoBuffer)) {
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delete [] mBuffer;
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|
}
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|
}
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nsresult
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nsAutoIndexBuffer::GrowTo(PRInt32 aAtLeast)
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{
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if (aAtLeast > mBufferLen)
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{
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PRInt32 newSize = mBufferLen * 2;
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if (newSize < mBufferLen + aAtLeast) {
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newSize = mBufferLen * 2 + aAtLeast;
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}
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PRInt32* newBuffer = new PRInt32[newSize];
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if (!newBuffer) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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#ifdef DEBUG
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memset(newBuffer, 0xdd, sizeof(PRInt32) * newSize);
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#endif
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memcpy(newBuffer, mBuffer, sizeof(PRInt32) * mBufferLen);
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if (mBuffer != mAutoBuffer) {
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delete [] mBuffer;
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}
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mBuffer = newBuffer;
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mBufferLen = newSize;
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}
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return NS_OK;
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}
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struct nsAutoPRUint8Buffer {
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|
nsAutoPRUint8Buffer();
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~nsAutoPRUint8Buffer();
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nsresult GrowTo(PRInt32 aAtLeast);
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PRUint8* mBuffer;
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PRInt32 mBufferLen;
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PRUint8 mAutoBuffer[TEXT_BUF_SIZE];
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};
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nsAutoPRUint8Buffer::nsAutoPRUint8Buffer()
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: mBuffer(mAutoBuffer),
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mBufferLen(TEXT_BUF_SIZE)
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|
{
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#ifdef DEBUG
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memset(mAutoBuffer, 0xdd, sizeof(mAutoBuffer));
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|
#endif
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|
}
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|
nsAutoPRUint8Buffer::~nsAutoPRUint8Buffer()
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|
{
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|
if (mBuffer && (mBuffer != mAutoBuffer)) {
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delete [] mBuffer;
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}
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|
}
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nsresult
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nsAutoPRUint8Buffer::GrowTo(PRInt32 aAtLeast)
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{
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if (aAtLeast > mBufferLen)
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{
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PRInt32 newSize = mBufferLen * 2;
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if (newSize < mBufferLen + aAtLeast) {
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newSize = mBufferLen * 2 + aAtLeast;
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}
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PRUint8* newBuffer = new PRUint8[newSize];
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if (!newBuffer) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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#ifdef DEBUG
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memset(newBuffer, 0xdd, sizeof(PRUint8) * newSize);
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#endif
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memcpy(newBuffer, mBuffer, sizeof(PRUint8) * mBufferLen);
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if (mBuffer != mAutoBuffer) {
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delete [] mBuffer;
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}
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mBuffer = newBuffer;
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mBufferLen = newSize;
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}
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return NS_OK;
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}
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|
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|
//----------------------------------------------------------------------
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// Helper class for managing blinking text
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class nsBlinkTimer : public nsITimerCallback
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{
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public:
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nsBlinkTimer();
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virtual ~nsBlinkTimer();
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NS_DECL_ISUPPORTS
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void AddFrame(nsPresContext* aPresContext, nsIFrame* aFrame);
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PRBool RemoveFrame(nsIFrame* aFrame);
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PRInt32 FrameCount();
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void Start();
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void Stop();
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NS_DECL_NSITIMERCALLBACK
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static nsresult AddBlinkFrame(nsPresContext* aPresContext, nsIFrame* aFrame);
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static nsresult RemoveBlinkFrame(nsIFrame* aFrame);
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static PRBool GetBlinkIsOff() { return sState == 3; }
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protected:
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struct FrameData {
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nsPresContext* mPresContext; // pres context associated with the frame
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nsIFrame* mFrame;
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FrameData(nsPresContext* aPresContext,
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nsIFrame* aFrame)
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: mPresContext(aPresContext), mFrame(aFrame) {}
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};
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nsCOMPtr<nsITimer> mTimer;
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nsVoidArray mFrames;
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nsPresContext* mPresContext;
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protected:
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static nsBlinkTimer* sTextBlinker;
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static PRUint32 sState; // 0-2 == on; 3 == off
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};
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nsBlinkTimer* nsBlinkTimer::sTextBlinker = nsnull;
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PRUint32 nsBlinkTimer::sState = 0;
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#ifdef NOISY_BLINK
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static PRTime gLastTick;
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#endif
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nsBlinkTimer::nsBlinkTimer()
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{
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}
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nsBlinkTimer::~nsBlinkTimer()
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{
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Stop();
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sTextBlinker = nsnull;
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}
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void nsBlinkTimer::Start()
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{
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nsresult rv;
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mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
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if (NS_OK == rv) {
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mTimer->InitWithCallback(this, 250, nsITimer::TYPE_REPEATING_PRECISE);
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}
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}
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void nsBlinkTimer::Stop()
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{
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if (nsnull != mTimer) {
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mTimer->Cancel();
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|
}
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|
}
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|
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NS_IMPL_ISUPPORTS1(nsBlinkTimer, nsITimerCallback)
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|
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void nsBlinkTimer::AddFrame(nsPresContext* aPresContext, nsIFrame* aFrame) {
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FrameData* frameData = new FrameData(aPresContext, aFrame);
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mFrames.AppendElement(frameData);
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if (1 == mFrames.Count()) {
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Start();
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}
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}
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PRBool nsBlinkTimer::RemoveFrame(nsIFrame* aFrame) {
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PRInt32 i, n = mFrames.Count();
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PRBool rv = PR_FALSE;
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for (i = 0; i < n; i++) {
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FrameData* frameData = (FrameData*) mFrames.ElementAt(i);
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if (frameData->mFrame == aFrame) {
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rv = mFrames.RemoveElementAt(i);
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delete frameData;
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break;
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}
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}
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if (0 == mFrames.Count()) {
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Stop();
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}
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return rv;
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}
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PRInt32 nsBlinkTimer::FrameCount() {
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return mFrames.Count();
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}
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NS_IMETHODIMP nsBlinkTimer::Notify(nsITimer *timer)
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|
{
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|
// Toggle blink state bit so that text code knows whether or not to
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// render. All text code shares the same flag so that they all blink
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// in unison.
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sState = (sState + 1) % 4;
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if (sState == 1 || sState == 2)
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// States 0, 1, and 2 are all the same.
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return NS_OK;
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|
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#ifdef NOISY_BLINK
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PRTime now = PR_Now();
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char buf[50];
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PRTime delta;
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LL_SUB(delta, now, gLastTick);
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gLastTick = now;
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PR_snprintf(buf, sizeof(buf), "%lldusec", delta);
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printf("%s\n", buf);
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#endif
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PRInt32 i, n = mFrames.Count();
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for (i = 0; i < n; i++) {
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FrameData* frameData = (FrameData*) mFrames.ElementAt(i);
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// Determine damaged area and tell view manager to redraw it
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// blink doesn't blink outline ... I hope
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nsRect bounds(nsPoint(0, 0), frameData->mFrame->GetSize());
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frameData->mFrame->Invalidate(bounds, PR_FALSE);
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}
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return NS_OK;
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}
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|
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// static
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nsresult nsBlinkTimer::AddBlinkFrame(nsPresContext* aPresContext, nsIFrame* aFrame)
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|
{
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if (!sTextBlinker)
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{
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sTextBlinker = new nsBlinkTimer;
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if (!sTextBlinker) return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(sTextBlinker);
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sTextBlinker->AddFrame(aPresContext, aFrame);
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return NS_OK;
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}
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|
|
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|
// static
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|
nsresult nsBlinkTimer::RemoveBlinkFrame(nsIFrame* aFrame)
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|
{
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NS_ASSERTION(sTextBlinker, "Should have blink timer here");
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nsBlinkTimer* blinkTimer = sTextBlinker; // copy so we can call NS_RELEASE on it
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if (!blinkTimer) return NS_OK;
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blinkTimer->RemoveFrame(aFrame);
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NS_RELEASE(blinkTimer);
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|
return NS_OK;
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|
}
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|
|
//----------------------------------------------------------------------
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class nsTextFrame : public nsFrame {
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|
public:
|
|
nsTextFrame();
|
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|
|
// nsIFrame
|
|
NS_IMETHOD Paint(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer,
|
|
PRUint32 aFlags);
|
|
|
|
NS_IMETHOD Destroy(nsPresContext* aPresContext);
|
|
|
|
NS_IMETHOD GetCursor(const nsPoint& aPoint,
|
|
nsIFrame::Cursor& aCursor);
|
|
|
|
NS_IMETHOD CharacterDataChanged(nsPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
PRBool aAppend);
|
|
|
|
virtual nsIFrame* GetNextInFlow() const {
|
|
return mNextInFlow;
|
|
}
|
|
NS_IMETHOD SetNextInFlow(nsIFrame* aNextInFlow) {
|
|
mNextInFlow = aNextInFlow;
|
|
return NS_OK;
|
|
}
|
|
virtual nsIFrame* GetLastInFlow() const;
|
|
|
|
NS_IMETHOD IsSplittable(nsSplittableType& aIsSplittable) const {
|
|
aIsSplittable = NS_FRAME_SPLITTABLE;
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* Get the "type" of the frame
|
|
*
|
|
* @see nsLayoutAtoms::textFrame
|
|
*/
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD List(nsPresContext* aPresContext, FILE* out, PRInt32 aIndent) const;
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const;
|
|
NS_IMETHOD_(nsFrameState) GetDebugStateBits() const ;
|
|
#endif
|
|
|
|
NS_IMETHOD GetPosition(nsPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd);
|
|
|
|
NS_IMETHOD GetContentAndOffsetsFromPoint(nsPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent);
|
|
|
|
NS_IMETHOD GetPositionSlowly(nsPresContext* aPresContext,
|
|
nsIRenderingContext * aRendContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aOffset);
|
|
|
|
|
|
NS_IMETHOD SetSelected(nsPresContext* aPresContext,
|
|
nsIDOMRange *aRange,
|
|
PRBool aSelected,
|
|
nsSpread aSpread);
|
|
|
|
NS_IMETHOD PeekOffset(nsPresContext* aPresContext, nsPeekOffsetStruct *aPos);
|
|
NS_IMETHOD CheckVisibility(nsPresContext* aContext, PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aRecurse, PRBool *aFinished, PRBool *_retval);
|
|
|
|
NS_IMETHOD HandleMultiplePress(nsPresContext* aPresContext,
|
|
nsGUIEvent * aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
|
|
NS_IMETHOD GetOffsets(PRInt32 &start, PRInt32 &end)const;
|
|
|
|
virtual void AdjustOffsetsForBidi(PRInt32 start, PRInt32 end);
|
|
|
|
NS_IMETHOD GetPointFromOffset(nsPresContext* inPresContext,
|
|
nsIRenderingContext* inRendContext,
|
|
PRInt32 inOffset,
|
|
nsPoint* outPoint);
|
|
|
|
NS_IMETHOD GetChildFrameContainingOffset(PRInt32 inContentOffset,
|
|
PRBool inHint,
|
|
PRInt32* outFrameContentOffset,
|
|
nsIFrame* *outChildFrame);
|
|
|
|
NS_IMETHOD IsVisibleForPainting(nsPresContext * aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
PRBool aCheckVis,
|
|
PRBool* aIsVisible);
|
|
|
|
virtual PRBool IsEmpty();
|
|
virtual PRBool IsSelfEmpty() { return IsEmpty(); }
|
|
|
|
#ifdef ACCESSIBILITY
|
|
NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
|
|
#endif
|
|
|
|
// nsIHTMLReflow
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
NS_IMETHOD CanContinueTextRun(PRBool& aContinueTextRun) const;
|
|
NS_IMETHOD AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace);
|
|
NS_IMETHOD TrimTrailingWhiteSpace(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRC,
|
|
nscoord& aDeltaWidth,
|
|
PRBool& aLastCharIsJustifiable);
|
|
|
|
struct TextStyle {
|
|
const nsStyleFont* mFont;
|
|
const nsStyleText* mText;
|
|
nsIFontMetrics* mNormalFont;
|
|
nsIFontMetrics* mSmallFont;
|
|
nsIFontMetrics* mLastFont;
|
|
PRBool mSmallCaps;
|
|
nscoord mWordSpacing;
|
|
nscoord mLetterSpacing;
|
|
nscoord mSpaceWidth;
|
|
nscoord mAveCharWidth;
|
|
PRBool mJustifying;
|
|
PRBool mPreformatted;
|
|
PRInt32 mNumJustifiableCharacterToRender;
|
|
PRInt32 mNumJustifiableCharacterToMeasure;
|
|
nscoord mExtraSpacePerJustifiableCharacter;
|
|
PRInt32 mNumJustifiableCharacterReceivingExtraJot;
|
|
|
|
TextStyle(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* sc)
|
|
{
|
|
// Get style data
|
|
mFont = sc->GetStyleFont();
|
|
mText = sc->GetStyleText();
|
|
|
|
// Cache the original decorations and reuse the current font
|
|
// to query metrics, rather than creating a new font which is expensive.
|
|
nsFont* plainFont = (nsFont *)&mFont->mFont; //XXX: Change to use a CONST_CAST macro.
|
|
NS_ASSERTION(plainFont, "null plainFont: font problems in TextStyle::TextStyle");
|
|
PRUint8 originalDecorations = plainFont->decorations;
|
|
plainFont->decorations = NS_FONT_DECORATION_NONE;
|
|
mAveCharWidth = 0;
|
|
SetFontFromStyle(&aRenderingContext, sc); // some users of the struct expect this state
|
|
aRenderingContext.GetFontMetrics(mNormalFont);
|
|
mNormalFont->GetSpaceWidth(mSpaceWidth);
|
|
mNormalFont->GetAveCharWidth(mAveCharWidth);
|
|
mLastFont = mNormalFont;
|
|
|
|
// Get the small-caps font if needed
|
|
mSmallCaps = NS_STYLE_FONT_VARIANT_SMALL_CAPS == plainFont->variant;
|
|
if (mSmallCaps) {
|
|
nscoord originalSize = plainFont->size;
|
|
plainFont->size = nscoord(0.8 * plainFont->size);
|
|
mSmallFont = aPresContext->GetMetricsFor(*plainFont).get(); // addrefs
|
|
// Reset to the size value saved earlier.
|
|
plainFont->size = originalSize;
|
|
}
|
|
else {
|
|
mSmallFont = nsnull;
|
|
}
|
|
|
|
// Reset to the decoration saved earlier
|
|
plainFont->decorations = originalDecorations;
|
|
|
|
// Get the word and letter spacing
|
|
PRIntn unit = mText->mWordSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
mWordSpacing = mText->mWordSpacing.GetCoordValue();
|
|
} else {
|
|
mWordSpacing = 0;
|
|
}
|
|
|
|
unit = mText->mLetterSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
mLetterSpacing = mText->mLetterSpacing.GetCoordValue();
|
|
} else {
|
|
mLetterSpacing = 0;
|
|
}
|
|
|
|
mNumJustifiableCharacterToRender = 0;
|
|
mNumJustifiableCharacterToMeasure = 0;
|
|
mNumJustifiableCharacterReceivingExtraJot = 0;
|
|
mExtraSpacePerJustifiableCharacter = 0;
|
|
mPreformatted = (NS_STYLE_WHITESPACE_PRE == mText->mWhiteSpace) ||
|
|
(NS_STYLE_WHITESPACE_MOZ_PRE_WRAP == mText->mWhiteSpace);
|
|
|
|
mJustifying = (NS_STYLE_TEXT_ALIGN_JUSTIFY == mText->mTextAlign) &&
|
|
!mPreformatted;
|
|
}
|
|
|
|
~TextStyle() {
|
|
NS_IF_RELEASE(mNormalFont);
|
|
NS_IF_RELEASE(mSmallFont);
|
|
}
|
|
};
|
|
|
|
// Contains extra style data needed only for painting (not reflowing)
|
|
struct TextPaintStyle : TextStyle {
|
|
const nsStyleColor* mColor;
|
|
nscolor mSelectionTextColor;
|
|
nscolor mSelectionBGColor;
|
|
|
|
TextPaintStyle(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* sc)
|
|
: TextStyle(aPresContext, aRenderingContext, sc)
|
|
{
|
|
mColor = sc->GetStyleColor();
|
|
|
|
// Get colors from look&feel
|
|
mSelectionBGColor = NS_RGB(0, 0, 0);
|
|
mSelectionTextColor = NS_RGB(255, 255, 255);
|
|
nsILookAndFeel* look = aPresContext->LookAndFeel();
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectBackground,
|
|
mSelectionBGColor);
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectForeground,
|
|
mSelectionTextColor);
|
|
}
|
|
|
|
~TextPaintStyle() {
|
|
mColor = nsnull;
|
|
}
|
|
};
|
|
|
|
struct TextReflowData {
|
|
PRInt32 mX; // OUT
|
|
PRInt32 mOffset; // IN/OUT How far along we are in the content
|
|
nscoord mMaxWordWidth; // OUT
|
|
nscoord mAscent; // OUT
|
|
nscoord mDescent; // OUT
|
|
PRPackedBool mWrapping; // IN
|
|
PRPackedBool mSkipWhitespace; // IN
|
|
PRPackedBool mMeasureText; // IN
|
|
PRPackedBool mInWord; // IN
|
|
PRPackedBool mFirstLetterOK; // IN
|
|
PRPackedBool mCanBreakBefore; // IN
|
|
PRPackedBool mComputeMaxWordWidth; // IN
|
|
PRPackedBool mTrailingSpaceTrimmed; // IN/OUT
|
|
|
|
TextReflowData(PRInt32 aStartingOffset,
|
|
PRBool aWrapping,
|
|
PRBool aSkipWhitespace,
|
|
PRBool aMeasureText,
|
|
PRBool aInWord,
|
|
PRBool aFirstLetterOK,
|
|
PRBool aCanBreakBefore,
|
|
PRBool aComputeMaxWordWidth,
|
|
PRBool aTrailingSpaceTrimmed)
|
|
: mX(0),
|
|
mOffset(aStartingOffset),
|
|
mMaxWordWidth(0),
|
|
mAscent(0),
|
|
mDescent(0),
|
|
mWrapping(aWrapping),
|
|
mSkipWhitespace(aSkipWhitespace),
|
|
mMeasureText(aMeasureText),
|
|
mInWord(aInWord),
|
|
mFirstLetterOK(aFirstLetterOK),
|
|
mCanBreakBefore(aCanBreakBefore),
|
|
mComputeMaxWordWidth(aComputeMaxWordWidth),
|
|
mTrailingSpaceTrimmed(aTrailingSpaceTrimmed)
|
|
{}
|
|
};
|
|
|
|
nsIDocument* GetDocument(nsPresContext* aPresContext);
|
|
|
|
void PrepareUnicodeText(nsTextTransformer& aTransformer,
|
|
nsAutoIndexBuffer* aIndexBuffer,
|
|
nsAutoTextBuffer* aTextBuffer,
|
|
PRInt32* aTextLen,
|
|
PRBool aForceArabicShaping = PR_FALSE,
|
|
PRIntn* aJustifiableCharCount = nsnull);
|
|
void ComputeExtraJustificationSpacing(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRInt32 aNumJustifiableCharacter);
|
|
|
|
/**
|
|
* @param aRightToLeftText whether the rendering context is reversing text
|
|
* using its native right-to-left capability
|
|
*/
|
|
void PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
nsPresContext* aPresContext,
|
|
TextPaintStyle& aStyle,
|
|
nscoord aX, nscoord aY, nscoord aWidth,
|
|
PRBool aRightToLeftText,
|
|
PRUnichar* aText = nsnull,
|
|
SelectionDetails *aDetails = nsnull,
|
|
PRUint32 aIndex = 0,
|
|
PRUint32 aLength = 0,
|
|
const nscoord* aSpacing = nsnull);
|
|
|
|
void PaintTextSlowly(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aStyle,
|
|
nscoord aX, nscoord aY);
|
|
|
|
// The passed-in rendering context must have its color set to the color the
|
|
// text should be rendered in.
|
|
/**
|
|
* @param aRightToLeftText whether the rendering context is reversing text
|
|
* using its native right-to-left capability
|
|
*/
|
|
void RenderString(nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
nsPresContext* aPresContext,
|
|
TextPaintStyle& aStyle,
|
|
PRBool aRightToLeftText,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nscoord aX, nscoord aY,
|
|
nscoord aWidth,
|
|
SelectionDetails *aDetails = nsnull);
|
|
|
|
void MeasureSmallCapsText(const nsHTMLReflowState& aReflowState,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aWord,
|
|
PRInt32 aWordLength,
|
|
PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult);
|
|
|
|
PRUint32 EstimateNumChars(PRUint32 aAvailableWidth,
|
|
PRUint32 aAverageCharWidth);
|
|
|
|
nsReflowStatus MeasureText(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsTextTransformer& aTx,
|
|
nsILineBreaker* aLb,
|
|
TextStyle& aTs,
|
|
TextReflowData& aTextData);
|
|
|
|
void GetTextDimensions(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult);
|
|
|
|
//this returns the index into the PAINTBUFFER of the x coord aWidth(based on 0 as far left)
|
|
//also note: this is NOT added to mContentOffset since that would imply that this return is
|
|
//meaningful to content yet. use index buffer from prepareunicodestring to find the content offset.
|
|
PRInt32 GetLengthSlowly(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nscoord aWidth);
|
|
|
|
PRBool IsTextInSelection(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext);
|
|
|
|
nsresult GetTextInfoForPainting(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIPresShell** aPresShell,
|
|
nsISelectionController** aSelectionController,
|
|
PRBool& aDisplayingSelection,
|
|
PRBool& aIsPaginated,
|
|
PRBool& aIsSelected,
|
|
PRBool& aHideStandardSelection,
|
|
PRInt16& aSelectionValue,
|
|
nsILineBreaker** aLineBreaker);
|
|
|
|
void PaintUnicodeText(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aStyle,
|
|
nscoord dx, nscoord dy);
|
|
|
|
void PaintAsciiText(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aStyle,
|
|
nscoord dx, nscoord dy);
|
|
|
|
/**
|
|
* ComputeTotalWordDimensions and ComputeWordFragmentDimensions work
|
|
* together to measure a text that spans multiple frames, e.g., as in
|
|
* "baseText<b>moreText<i>moreDeepText</i></b>moreAlsoHere"
|
|
* where the total text shoudn't be broken (or the joined pieces should be
|
|
* passed to the linebreaker for examination, especially in i18n cases).
|
|
*
|
|
* ComputeTotalWordDimensions will loop over ComputeWordFragmentDimensions
|
|
* to look-ahead and accumulate the joining fragments.
|
|
*
|
|
* @param aNextFrame is the first textFrame after the baseText's textFrame.
|
|
*
|
|
* @param aBaseDimensions is the dimension of baseText.
|
|
*
|
|
* @param aCanBreakBefore is false when it is not possible to break before
|
|
* the baseText (e.g., when this is the first word on the line).
|
|
*/
|
|
nsTextDimensions ComputeTotalWordDimensions(nsPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
const nsTextDimensions& aBaseDimensions,
|
|
PRUnichar* aWordBuf,
|
|
PRUint32 aWordBufLen,
|
|
PRUint32 aWordBufSize,
|
|
PRBool aCanBreakBefore);
|
|
|
|
/**
|
|
* @param aNextFrame is the textFrame following the current fragment.
|
|
*
|
|
* @param aMoreSize plays a double role. The process should continue
|
|
* normally when it is zero. But when it returns -1, it means that there is
|
|
* no more fragment of interest and the look-ahead should be stopped. When
|
|
* it returns a positive value, it means that the current buffer (aWordBuf
|
|
* of size aWordBufSize) is not big enough to accumulate the current fragment.
|
|
* The returned positive value is the shortfall.
|
|
*
|
|
* @param aWordBufLen is the accumulated length of the fragments that have
|
|
* been accounted for so far.
|
|
*/
|
|
nsTextDimensions ComputeWordFragmentDimensions(nsPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
nsIContent* aContent,
|
|
nsITextContent* aText,
|
|
PRInt32* aMoreSize,
|
|
const PRUnichar* aWordBuf,
|
|
PRUint32 &aWordBufLen,
|
|
PRUint32 aWordBufSize,
|
|
PRBool aCanBreakBefore);
|
|
|
|
#ifdef DEBUG
|
|
void ToCString(nsString& aBuf, PRInt32* aTotalContentLength) const;
|
|
#endif
|
|
|
|
protected:
|
|
virtual ~nsTextFrame();
|
|
|
|
nsIFrame* mNextInFlow;
|
|
PRInt32 mContentOffset;
|
|
PRInt32 mContentLength;
|
|
PRInt32 mColumn;
|
|
nscoord mAscent;
|
|
//factored out method for GetTextDimensions and getlengthslowly. if aGetTextDimensions is non-zero number then measure to the width field and return the length. else shove total dimensions into result
|
|
PRInt32 GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult,
|
|
PRBool aGetTextDimensions/* true=get dimensions false = return length up to aDimensionsResult->width size*/);
|
|
nsresult GetContentAndOffsetsForSelection(nsPresContext* aPresContext,nsIContent **aContent, PRInt32 *aOffset, PRInt32 *aLength);
|
|
|
|
void AdjustSelectionPointsForBidi(SelectionDetails *sdptr,
|
|
PRInt32 textLength,
|
|
PRBool isRTLChars,
|
|
PRBool isOddLevel,
|
|
PRBool isBidiSystem);
|
|
|
|
void SetOffsets(PRInt32 start, PRInt32 end);
|
|
|
|
PRBool IsChineseJapaneseLangGroup();
|
|
PRBool IsJustifiableCharacter(PRUnichar aChar, PRBool aLangIsCJ);
|
|
|
|
nsresult FillClusterBuffer(nsPresContext *aPresContext, const PRUnichar *aText,
|
|
PRUint32 aLength, nsAutoPRUint8Buffer& aClusterBuffer);
|
|
};
|
|
|
|
#ifdef ACCESSIBILITY
|
|
NS_IMETHODIMP nsTextFrame::GetAccessible(nsIAccessible** aAccessible)
|
|
{
|
|
if (mRect.width > 0 || mRect.height > 0 || GetNextInFlow()) {
|
|
|
|
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
|
|
|
|
if (accService) {
|
|
return accService->CreateHTMLTextAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
|
|
}
|
|
}
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
#endif
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsTextFrame::Destroy(nsPresContext* aPresContext)
|
|
{
|
|
if (mNextInFlow) {
|
|
mNextInFlow->SetPrevInFlow(nsnull);
|
|
}
|
|
// Let the base class destroy the frame
|
|
return nsFrame::Destroy(aPresContext);
|
|
}
|
|
|
|
class nsContinuingTextFrame : public nsTextFrame {
|
|
public:
|
|
NS_IMETHOD Init(nsPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow);
|
|
|
|
NS_IMETHOD Destroy(nsPresContext* aPresContext);
|
|
|
|
virtual nsIFrame* GetPrevInFlow() const {
|
|
return mPrevInFlow;
|
|
}
|
|
NS_IMETHOD SetPrevInFlow(nsIFrame* aPrevInFlow) {
|
|
mPrevInFlow = aPrevInFlow;
|
|
return NS_OK;
|
|
}
|
|
virtual nsIFrame* GetFirstInFlow() const;
|
|
|
|
protected:
|
|
nsIFrame* mPrevInFlow;
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
nsContinuingTextFrame::Init(nsPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
NS_PRECONDITION(aContent->IsContentOfType(nsIContent::eTEXT),
|
|
"Bogus content!");
|
|
|
|
nsresult rv;
|
|
|
|
rv = nsTextFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow);
|
|
|
|
if (aPrevInFlow) {
|
|
// Hook the frame into the flow
|
|
mPrevInFlow = aPrevInFlow;
|
|
aPrevInFlow->SetNextInFlow(this);
|
|
#ifdef IBMBIDI
|
|
if (aPrevInFlow->GetStateBits() & NS_FRAME_IS_BIDI) {
|
|
PRInt32 start, end;
|
|
aPrevInFlow->GetOffsets(start, mContentOffset);
|
|
|
|
nsPropertyTable *propTable = aPresContext->PropertyTable();
|
|
propTable->SetProperty(this, nsLayoutAtoms::embeddingLevel,
|
|
propTable->GetProperty(aPrevInFlow, nsLayoutAtoms::embeddingLevel),
|
|
nsnull, nsnull);
|
|
propTable->SetProperty(this, nsLayoutAtoms::baseLevel,
|
|
propTable->GetProperty(aPrevInFlow, nsLayoutAtoms::baseLevel),
|
|
nsnull, nsnull);
|
|
propTable->SetProperty(this, nsLayoutAtoms::charType,
|
|
propTable->GetProperty(aPrevInFlow, nsLayoutAtoms::charType),
|
|
nsnull, nsnull);
|
|
|
|
void* value = propTable->GetProperty(aPrevInFlow,
|
|
nsLayoutAtoms::nextBidi);
|
|
if (value) { // nextBidi
|
|
// aPrevInFlow and this frame will point to the same next bidi frame.
|
|
propTable->SetProperty(this, nsLayoutAtoms::nextBidi,
|
|
value, nsnull, nsnull);
|
|
|
|
( (nsIFrame*) value)->GetOffsets(start, end);
|
|
mContentLength = PR_MAX(1, start - mContentOffset);
|
|
} // value
|
|
mState |= NS_FRAME_IS_BIDI;
|
|
} // prev frame is bidi
|
|
#endif // IBMBIDI
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsContinuingTextFrame::Destroy(nsPresContext* aPresContext)
|
|
{
|
|
if (mPrevInFlow || mNextInFlow) {
|
|
nsSplittableFrame::RemoveFromFlow(this);
|
|
}
|
|
// Let the base class destroy the frame
|
|
return nsFrame::Destroy(aPresContext);
|
|
}
|
|
|
|
nsIFrame*
|
|
nsContinuingTextFrame::GetFirstInFlow() const
|
|
{
|
|
// Can't cast to |nsContinuingTextFrame*| because the first one isn't.
|
|
nsIFrame *firstInFlow,
|
|
*previous = NS_CONST_CAST(nsIFrame*,
|
|
NS_STATIC_CAST(const nsIFrame*, this));
|
|
do {
|
|
firstInFlow = previous;
|
|
previous = firstInFlow->GetPrevInFlow();
|
|
} while (previous);
|
|
return firstInFlow;
|
|
}
|
|
|
|
inline nscolor EnsureDifferentColors(nscolor colorA, nscolor colorB)
|
|
{
|
|
if (colorA == colorB)
|
|
{
|
|
nscolor res;
|
|
res = NS_RGB(NS_GET_R(colorA) ^ 0xff,
|
|
NS_GET_G(colorA) ^ 0xff,
|
|
NS_GET_B(colorA) ^ 0xff);
|
|
return res;
|
|
}
|
|
return colorA;
|
|
}
|
|
|
|
|
|
//DRAW SELECTION ITERATOR USED FOR TEXTFRAMES ONLY
|
|
//helper class for drawing multiply selected text
|
|
class DrawSelectionIterator
|
|
{
|
|
enum {SELECTION_TYPES_WE_CARE_ABOUT=nsISelectionController::SELECTION_NONE+nsISelectionController::SELECTION_NORMAL};
|
|
public:
|
|
DrawSelectionIterator(nsIContent *aContent, const SelectionDetails *aSelDetails, PRUnichar *aText,
|
|
PRUint32 aTextLength, nsTextFrame::TextPaintStyle &aTextStyle,
|
|
PRInt16 aSelectionStatus, nsPresContext *aPresContext,
|
|
nsStyleContext *aStyleContext);
|
|
~DrawSelectionIterator();
|
|
PRBool First();
|
|
PRBool Next();
|
|
PRBool IsDone();
|
|
PRBool IsLast();
|
|
|
|
PRUnichar * CurrentTextUnicharPtr();
|
|
char * CurrentTextCStrPtr();
|
|
PRUint32 CurrentLength();
|
|
nsTextFrame::TextPaintStyle & CurrentStyle();
|
|
PRBool IsBeforeOrAfter();
|
|
|
|
/**
|
|
* Get foreground color, background color, whether the background is transparent,
|
|
* and whether the current range is the normal selection.
|
|
*
|
|
* @param aForeColor [out] returns the foreground color of the current range.
|
|
* @param aBackColor [out] returns the background color of the current range.
|
|
* Note that this value is undefined if aBackIsTransparent
|
|
* is true or if @return is false.
|
|
* @param aBackIsTransparent [out] returns whether the background is transparent.
|
|
* If true, the background is transparent.
|
|
* Otherwise, it isn't so.
|
|
* @return whether the current range is a normal selection.
|
|
*/
|
|
PRBool GetSelectionColors(nscolor *aForeColor, nscolor *aBackColor, PRBool *aBackIsTransparent);
|
|
private:
|
|
union {
|
|
PRUnichar *mUniStr;
|
|
char *mCStr;
|
|
};
|
|
PRUint32 mLength;
|
|
PRUint32 mCurrentIdx;
|
|
PRUint32 mCurrentLength;
|
|
nsTextFrame::TextPaintStyle &mOldStyle;//base new styles on this one???
|
|
const SelectionDetails *mDetails;
|
|
PRBool mDone;
|
|
PRUint8 * mTypes;
|
|
PRBool mInit;
|
|
PRInt16 mSelectionStatus;//see nsIDocument.h SetDisplaySelection()
|
|
nscolor mFrameBackgroundColor;
|
|
PRInt32 mSufficientContrast;
|
|
nscolor mDisabledColor;
|
|
nscolor mAttentionColor;
|
|
|
|
PRBool mSelectionPseudoStyle;
|
|
nscolor mSelectionPseudoFGcolor;
|
|
nscolor mSelectionPseudoBGcolor;
|
|
PRBool mSelectionPseudoBGIsTransparent;
|
|
//private methods
|
|
void FillCurrentData();
|
|
};
|
|
|
|
DrawSelectionIterator::DrawSelectionIterator(nsIContent *aContent,
|
|
const SelectionDetails *aSelDetails,
|
|
PRUnichar *aText,
|
|
PRUint32 aTextLength,
|
|
nsTextFrame::TextPaintStyle &aTextStyle,
|
|
PRInt16 aSelectionStatus,
|
|
nsPresContext *aPresContext,
|
|
nsStyleContext *aStyleContext)
|
|
:mOldStyle(aTextStyle)
|
|
{
|
|
mDetails = aSelDetails;
|
|
mCurrentIdx = 0;
|
|
mUniStr = aText;
|
|
mLength = aTextLength;
|
|
mTypes = nsnull;
|
|
mInit = PR_FALSE;
|
|
mSelectionStatus = aSelectionStatus;
|
|
mSelectionPseudoStyle = PR_FALSE;
|
|
mSelectionPseudoBGIsTransparent = PR_FALSE;
|
|
|
|
const nsStyleBackground* bg =
|
|
nsCSSRendering::FindNonTransparentBackground(aStyleContext);
|
|
NS_ASSERTION(bg, "Cannot find NonTransparentBackground.");
|
|
mFrameBackgroundColor = bg->mBackgroundColor;
|
|
|
|
if (aContent) {
|
|
nsRefPtr<nsStyleContext> sc;
|
|
sc = aPresContext->StyleSet()->
|
|
ProbePseudoStyleFor(aContent->GetParent(),
|
|
nsCSSPseudoElements::mozSelection, aStyleContext);
|
|
if (sc) {
|
|
mSelectionPseudoStyle = PR_TRUE;
|
|
bg = sc->GetStyleBackground();
|
|
mSelectionPseudoBGIsTransparent = PRBool(bg->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
|
|
if (!mSelectionPseudoBGIsTransparent )
|
|
mSelectionPseudoBGcolor = bg->mBackgroundColor;
|
|
mSelectionPseudoFGcolor = sc->GetStyleColor()->mColor;
|
|
}
|
|
}
|
|
|
|
// Get background colors for disabled selection at attention-getting selection (used with type ahead find)
|
|
nsILookAndFeel *look = aPresContext->LookAndFeel();
|
|
nscolor defaultWindowBackgroundColor;
|
|
look->GetColor(nsILookAndFeel::eColor_WindowBackground,
|
|
defaultWindowBackgroundColor);
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectBackgroundAttention,
|
|
mAttentionColor);
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectBackgroundDisabled,
|
|
mDisabledColor);
|
|
mDisabledColor = EnsureDifferentColors(mDisabledColor,
|
|
mOldStyle.mSelectionBGColor);
|
|
mAttentionColor = EnsureDifferentColors(mAttentionColor,
|
|
mOldStyle.mSelectionBGColor);
|
|
|
|
mSufficientContrast =
|
|
PR_MIN(PR_MIN(NS_SUFFICIENT_LUMINOSITY_DIFFERENCE,
|
|
NS_LUMINOSITY_DIFFERENCE(mOldStyle.mSelectionTextColor,
|
|
mOldStyle.mSelectionBGColor)),
|
|
NS_LUMINOSITY_DIFFERENCE(defaultWindowBackgroundColor,
|
|
mOldStyle.mSelectionBGColor));
|
|
|
|
if (!aSelDetails)
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
mDone = (PRBool)(mCurrentIdx>=mLength);
|
|
if (mDone)
|
|
return;
|
|
|
|
//special case for 1 selection. later
|
|
const SelectionDetails *details = aSelDetails;
|
|
if (details->mNext)
|
|
{
|
|
mTypes = new PRUint8[mLength];
|
|
if (!mTypes)
|
|
return;
|
|
memset(mTypes,0,mLength);//initialize to 0
|
|
while (details)
|
|
{
|
|
if ((details->mType & SELECTION_TYPES_WE_CARE_ABOUT ) &&
|
|
(details->mStart != details->mEnd))
|
|
{
|
|
mInit = PR_TRUE;//WE FOUND SOMETHING WE CARE ABOUT
|
|
for (int i = details->mStart; i < details->mEnd; i++)
|
|
{
|
|
if ((PRUint32)i>=mLength)
|
|
{
|
|
NS_ASSERTION(0,"Selection Details out of range?");
|
|
return;//eh
|
|
}
|
|
mTypes[i]|=details->mType;//add this bit
|
|
}
|
|
}
|
|
details= details->mNext;
|
|
}
|
|
if (!mInit && mTypes) //we have details but none that we care about.
|
|
{
|
|
delete [] mTypes;
|
|
mTypes = nsnull;
|
|
mDone = PR_TRUE;//we are finished
|
|
}
|
|
}
|
|
else if (details->mStart == details->mEnd)//no collapsed selections here!
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
else if (!(details->mType & SELECTION_TYPES_WE_CARE_ABOUT ))//if all we have is selection we DONT care about, do nothing
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
mInit = PR_TRUE;
|
|
}
|
|
|
|
DrawSelectionIterator::~DrawSelectionIterator()
|
|
{
|
|
if (mTypes)
|
|
delete [] mTypes;
|
|
}
|
|
|
|
void
|
|
DrawSelectionIterator::FillCurrentData()
|
|
{
|
|
if (mDone)
|
|
return;
|
|
mCurrentIdx += mCurrentLength; // advance to this chunk
|
|
mCurrentLength = 0;
|
|
if (mCurrentIdx >= mLength)
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
if (!mTypes)
|
|
{
|
|
if (mCurrentIdx < (PRUint32)mDetails->mStart)
|
|
{
|
|
mCurrentLength = mDetails->mStart;
|
|
}
|
|
else if (mCurrentIdx == (PRUint32)mDetails->mStart)
|
|
{//start
|
|
mCurrentLength = mDetails->mEnd-mCurrentIdx;
|
|
}
|
|
else if (mCurrentIdx > (PRUint32)mDetails->mStart)//last unselected part
|
|
{
|
|
mCurrentLength = mLength - mDetails->mEnd;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
uint8 typevalue = mTypes[mCurrentIdx];
|
|
while (mCurrentIdx+mCurrentLength < mLength && typevalue == mTypes[mCurrentIdx+mCurrentLength])
|
|
{
|
|
mCurrentLength++;
|
|
}
|
|
}
|
|
// never overrun past mLength
|
|
if (mCurrentIdx+mCurrentLength > mLength)
|
|
{
|
|
mCurrentLength = mLength - mCurrentIdx;
|
|
}
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::First()
|
|
{
|
|
if (!mInit)
|
|
return PR_FALSE;
|
|
mCurrentIdx = 0;
|
|
mCurrentLength = 0;
|
|
if (!mTypes && mDetails->mStart == mDetails->mEnd)//no collapsed selections here!
|
|
mDone = PR_TRUE;
|
|
mDone = (mCurrentIdx+mCurrentLength) >= mLength;
|
|
FillCurrentData();
|
|
return PR_TRUE;
|
|
}
|
|
|
|
|
|
|
|
PRBool
|
|
DrawSelectionIterator::Next()
|
|
{
|
|
if (mDone || !mInit)
|
|
return PR_FALSE;
|
|
FillCurrentData();//advances to next chunk
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::IsLast()
|
|
{
|
|
return mDone || !mInit || mCurrentIdx + mCurrentLength >= mLength;
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::IsDone()
|
|
{
|
|
return mDone || !mInit;
|
|
}
|
|
|
|
|
|
PRUnichar *
|
|
DrawSelectionIterator::CurrentTextUnicharPtr()
|
|
{
|
|
return mUniStr+mCurrentIdx;
|
|
}
|
|
|
|
char *
|
|
DrawSelectionIterator::CurrentTextCStrPtr()
|
|
{
|
|
return mCStr+mCurrentIdx;
|
|
}
|
|
|
|
PRUint32
|
|
DrawSelectionIterator::CurrentLength()
|
|
{
|
|
return mCurrentLength;
|
|
}
|
|
|
|
nsTextFrame::TextPaintStyle &
|
|
DrawSelectionIterator::CurrentStyle()
|
|
{
|
|
return mOldStyle;
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::GetSelectionColors(nscolor *aForeColor,
|
|
nscolor *aBackColor,
|
|
PRBool *aBackIsTransparent)
|
|
{
|
|
*aBackIsTransparent = PR_FALSE;
|
|
PRBool isSelection =
|
|
(mTypes && (mTypes[mCurrentIdx] & nsISelectionController::SELECTION_NORMAL)) ||
|
|
(!mTypes && mCurrentIdx == (PRUint32)mDetails->mStart);
|
|
if (!isSelection) {
|
|
*aForeColor = mOldStyle.mColor->mColor;
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (mSelectionPseudoStyle &&
|
|
mSelectionStatus == nsISelectionController::SELECTION_ON) {
|
|
*aForeColor = mSelectionPseudoFGcolor;
|
|
*aBackColor = mSelectionPseudoBGcolor;
|
|
*aBackIsTransparent = mSelectionPseudoBGIsTransparent;
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool dontChangeTextColor =
|
|
mOldStyle.mSelectionTextColor == NS_DONT_CHANGE_COLOR;
|
|
|
|
if (dontChangeTextColor)
|
|
*aForeColor = mOldStyle.mColor->mColor;
|
|
else
|
|
*aForeColor = mOldStyle.mSelectionTextColor;
|
|
|
|
if (mSelectionStatus == nsISelectionController::SELECTION_ATTENTION)
|
|
*aBackColor = mAttentionColor;
|
|
else if (mSelectionStatus != nsISelectionController::SELECTION_ON)
|
|
*aBackColor = mDisabledColor;
|
|
else
|
|
*aBackColor = mOldStyle.mSelectionBGColor;
|
|
|
|
// We don't support selection color exchanging when selection text color is
|
|
// NS_DONT_CHANGE_COLOR. Because the text color should not be background color.
|
|
if (dontChangeTextColor) {
|
|
*aForeColor = EnsureDifferentColors(*aForeColor, *aBackColor);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// If the combination of selection background color and frame background color
|
|
// is sufficient contrast, don't exchange the selection colors.
|
|
PRInt32 backLuminosityDifference =
|
|
NS_LUMINOSITY_DIFFERENCE(*aBackColor, mFrameBackgroundColor);
|
|
if (backLuminosityDifference >= mSufficientContrast)
|
|
return PR_TRUE;
|
|
|
|
// Otherwise, we should use the higher-contrast color for the selection
|
|
// background color.
|
|
PRInt32 foreLuminosityDifference =
|
|
NS_LUMINOSITY_DIFFERENCE(*aForeColor, mFrameBackgroundColor);
|
|
if (backLuminosityDifference < foreLuminosityDifference) {
|
|
nscolor tmpColor = *aForeColor;
|
|
*aForeColor = *aBackColor;
|
|
*aBackColor = tmpColor;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::IsBeforeOrAfter()
|
|
{
|
|
return mCurrentIdx != (PRUint32)mDetails->mStart;
|
|
}
|
|
|
|
//END DRAWSELECTIONITERATOR!!
|
|
|
|
|
|
|
|
|
|
// Flag information used by rendering code. This information is
|
|
// computed by the ResizeReflow code. The flags are stored in the
|
|
// mState variable in the frame class private section.
|
|
|
|
// Flag indicating that whitespace was skipped
|
|
#define TEXT_SKIP_LEADING_WS 0x01000000
|
|
#define TEXT_HAS_MULTIBYTE 0x02000000
|
|
#define TEXT_IN_WORD 0x04000000
|
|
// This bit is set on the first frame in a continuation indicating
|
|
// that it was chopped short because of :first-letter style.
|
|
#define TEXT_FIRST_LETTER 0x08000000
|
|
#define TEXT_WAS_TRANSFORMED 0x10000000
|
|
|
|
// Bits in mState used for reflow flags
|
|
#define TEXT_REFLOW_FLAGS 0x1F000000
|
|
|
|
#define TEXT_TRIMMED_WS 0x20000000
|
|
|
|
#define TEXT_OPTIMIZE_RESIZE 0x40000000
|
|
|
|
#define TEXT_BLINK_ON 0x80000000
|
|
|
|
#define TEXT_IS_ONLY_WHITESPACE 0x00100000
|
|
|
|
#define TEXT_ISNOT_ONLY_WHITESPACE 0x00200000
|
|
|
|
#define TEXT_WHITESPACE_FLAGS 0x00300000
|
|
|
|
#define TEXT_IS_END_OF_LINE 0x00400000
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
#if defined(DEBUG_rbs) || defined(DEBUG_bzbarsky)
|
|
static void
|
|
VerifyNotDirty(nsFrameState state)
|
|
{
|
|
PRBool isZero = state & NS_FRAME_FIRST_REFLOW;
|
|
PRBool isDirty = state & NS_FRAME_IS_DIRTY;
|
|
if (!isZero && isDirty)
|
|
NS_WARNING("internal offsets may be out-of-sync");
|
|
}
|
|
#define DEBUG_VERIFY_NOT_DIRTY(state) \
|
|
VerifyNotDirty(state)
|
|
#else
|
|
#define DEBUG_VERIFY_NOT_DIRTY(state)
|
|
#endif
|
|
|
|
nsresult
|
|
NS_NewTextFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsTextFrame* it = new (aPresShell) nsTextFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
NS_NewContinuingTextFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsContinuingTextFrame* it = new (aPresShell) nsContinuingTextFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTextFrame::nsTextFrame()
|
|
{
|
|
}
|
|
|
|
nsTextFrame::~nsTextFrame()
|
|
{
|
|
if (0 != (mState & TEXT_BLINK_ON))
|
|
{
|
|
nsBlinkTimer::RemoveBlinkFrame(this);
|
|
}
|
|
}
|
|
|
|
nsIDocument*
|
|
nsTextFrame::GetDocument(nsPresContext* aPresContext)
|
|
{
|
|
nsIDocument *result = nsnull;
|
|
if (mContent) {
|
|
result = mContent->GetDocument();
|
|
}
|
|
if (!result && aPresContext) {
|
|
result = aPresContext->PresShell()->GetDocument();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetCursor(const nsPoint& aPoint,
|
|
nsIFrame::Cursor& aCursor)
|
|
{
|
|
FillCursorInformationFromStyle(GetStyleUserInterface(), aCursor);
|
|
if (NS_STYLE_CURSOR_AUTO == aCursor.mCursor) {
|
|
aCursor.mCursor = NS_STYLE_CURSOR_TEXT;
|
|
|
|
// If tabindex >= 0, use default cursor to indicate it's not selectable
|
|
nsIFrame *ancestorFrame = this;
|
|
while ((ancestorFrame = ancestorFrame->GetParent()) != nsnull) {
|
|
nsIContent *ancestorContent = ancestorFrame->GetContent();
|
|
if (ancestorContent && ancestorContent->HasAttr(kNameSpaceID_None, nsHTMLAtoms::tabindex)) {
|
|
nsAutoString tabIndexStr;
|
|
ancestorContent->GetAttr(kNameSpaceID_None, nsHTMLAtoms::tabindex, tabIndexStr);
|
|
if (!tabIndexStr.IsEmpty()) {
|
|
PRInt32 rv, tabIndexVal = tabIndexStr.ToInteger(&rv);
|
|
if (NS_SUCCEEDED(rv) && tabIndexVal >= 0) {
|
|
aCursor.mCursor = NS_STYLE_CURSOR_DEFAULT;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsTextFrame::GetLastInFlow() const
|
|
{
|
|
nsTextFrame* lastInFlow = (nsTextFrame*)this;
|
|
while (lastInFlow->mNextInFlow) {
|
|
lastInFlow = (nsTextFrame*)lastInFlow->mNextInFlow;
|
|
}
|
|
NS_POSTCONDITION(lastInFlow, "illegal state in flow chain.");
|
|
return lastInFlow;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::CharacterDataChanged(nsPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
PRBool aAppend)
|
|
{
|
|
nsIFrame* targetTextFrame = this;
|
|
|
|
PRBool markAllDirty = PR_TRUE;
|
|
if (aAppend) {
|
|
markAllDirty = PR_FALSE;
|
|
nsTextFrame* frame = (nsTextFrame*)GetLastInFlow();
|
|
frame->mState &= ~TEXT_WHITESPACE_FLAGS;
|
|
frame->mState |= NS_FRAME_IS_DIRTY;
|
|
targetTextFrame = frame;
|
|
}
|
|
|
|
if (markAllDirty) {
|
|
// Mark this frame and all the next-in-flow frames as dirty
|
|
nsTextFrame* textFrame = this;
|
|
nsPropertyTable *propTable = aPresContext->PropertyTable();
|
|
while (textFrame) {
|
|
textFrame->mState &= ~TEXT_WHITESPACE_FLAGS;
|
|
textFrame->mState |= NS_FRAME_IS_DIRTY;
|
|
#ifdef IBMBIDI
|
|
void* nextBidiFrame;
|
|
if ((textFrame->mState & NS_FRAME_IS_BIDI) &&
|
|
(nextBidiFrame = propTable->GetProperty(textFrame, nsLayoutAtoms::nextBidi)))
|
|
textFrame = (nsTextFrame*)nextBidiFrame;
|
|
else
|
|
#endif
|
|
textFrame = (nsTextFrame*)textFrame->mNextInFlow;
|
|
}
|
|
}
|
|
|
|
// Ask the parent frame to reflow me.
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell && mParent) {
|
|
mParent->ReflowDirtyChild(shell, targetTextFrame);
|
|
}
|
|
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::Paint(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer,
|
|
PRUint32 aFlags)
|
|
{
|
|
if (NS_FRAME_PAINT_LAYER_FOREGROUND != aWhichLayer) {
|
|
return NS_OK;
|
|
}
|
|
if ((0 != (mState & TEXT_BLINK_ON)) && nsBlinkTimer::GetBlinkIsOff()) {
|
|
return NS_OK;
|
|
}
|
|
nsStyleContext* sc = mStyleContext;
|
|
PRBool isVisible;
|
|
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) && isVisible) {
|
|
TextPaintStyle ts(aPresContext, aRenderingContext, mStyleContext);
|
|
if (ts.mSmallCaps || (0 != ts.mWordSpacing) || (0 != ts.mLetterSpacing)
|
|
|| ts.mJustifying) {
|
|
PaintTextSlowly(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
}
|
|
else {
|
|
// Get the text fragment
|
|
nsCOMPtr<nsITextContent> tc = do_QueryInterface(mContent);
|
|
const nsTextFragment* frag = nsnull;
|
|
if (tc) {
|
|
frag = tc->Text();
|
|
if (!frag) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
// Choose rendering pathway based on rendering context performance
|
|
// hint, whether it needs to be transformed, and whether it's
|
|
// multi-byte
|
|
PRBool hasMultiByteChars = (0 != (mState & TEXT_HAS_MULTIBYTE));
|
|
PRUint32 hints = 0;
|
|
aRenderingContext.GetHints(hints);
|
|
|
|
#ifdef IBMBIDI
|
|
PRBool bidiEnabled = aPresContext->BidiEnabled();
|
|
#else
|
|
const PRBool bidiEnabled = PR_FALSE;
|
|
#endif // IBMBIDI
|
|
// * BiDi text or text with multi-byte characters must always be
|
|
// rendered as Unicode.
|
|
// * Non-transformed, 1-byte text should always be rendered as
|
|
// ASCII.
|
|
// * Other transformed or 2-byte text should be rendered according
|
|
// to the preference of the hint from the rendering context.
|
|
if (bidiEnabled || hasMultiByteChars ||
|
|
((0 == (hints & NS_RENDERING_HINT_FAST_8BIT_TEXT)) &&
|
|
(frag->Is2b() || (0 != (mState & TEXT_WAS_TRANSFORMED))))) {
|
|
PaintUnicodeText(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
}
|
|
else {
|
|
PaintAsciiText(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
}
|
|
|
|
}
|
|
}
|
|
DO_GLOBAL_REFLOW_COUNT_DSP("nsTextFrame", &aRenderingContext);
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsTextFrame::IsChineseJapaneseLangGroup()
|
|
{
|
|
const nsStyleVisibility* visibility = mStyleContext->GetStyleVisibility();
|
|
if (visibility->mLangGroup == nsLayoutAtoms::Japanese
|
|
|| visibility->mLangGroup == nsLayoutAtoms::Chinese
|
|
|| visibility->mLangGroup == nsLayoutAtoms::Taiwanese
|
|
|| visibility->mLangGroup == nsLayoutAtoms::HongKongChinese)
|
|
return PR_TRUE;
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Currently only Unicode characters below 0x10000 have their spacing modified
|
|
* by justification. If characters above 0x10000 turn out to need
|
|
* justification spacing, that will require extra work. Currently,
|
|
* this function must not include 0xd800 to 0xdbff because these characters
|
|
* are surrogates.
|
|
*/
|
|
PRBool
|
|
nsTextFrame::IsJustifiableCharacter(PRUnichar aChar, PRBool aLangIsCJ)
|
|
{
|
|
if (0x20u == aChar || 0xa0u == aChar)
|
|
return PR_TRUE;
|
|
if (aChar < 0x2150u)
|
|
return PR_FALSE;
|
|
if (aLangIsCJ && (
|
|
(0x2150u <= aChar && aChar <= 0x22ffu) || // Number Forms, Arrows, Mathematical Operators
|
|
(0x2460u <= aChar && aChar <= 0x24ffu) || // Enclosed Alphanumerics
|
|
(0x2580u <= aChar && aChar <= 0x27bfu) || // Block Elements, Geometric Shapes, Miscellaneous Symbols, Dingbats
|
|
(0x27f0u <= aChar && aChar <= 0x2bffu) || // Supplemental Arrows-A, Braille Patterns, Supplemental Arrows-B,
|
|
// Miscellaneous Mathematical Symbols-B, Supplemental Mathematical Operators,
|
|
// Miscellaneous Symbols and Arrows
|
|
(0x2e80u <= aChar && aChar <= 0x312fu) || // CJK Radicals Supplement, CJK Radicals Supplement,
|
|
// Ideographic Description Characters, CJK Symbols and Punctuation,
|
|
// Hiragana, Katakana, Bopomofo
|
|
(0x3190u <= aChar && aChar <= 0xabffu) || // Kanbun, Bopomofo Extended, Katakana Phonetic Extensions,
|
|
// Enclosed CJK Letters and Months, CJK Compatibility,
|
|
// CJK Unified Ideographs Extension A, Yijing Hexagram Symbols,
|
|
// CJK Unified Ideographs, Yi Syllables, Yi Radicals
|
|
(0xf900u <= aChar && aChar <= 0xfaffu) || // CJK Compatibility Ideographs
|
|
(0xff5eu <= aChar && aChar <= 0xff9fu) // Halfwidth and Fullwidth Forms(a part)
|
|
))
|
|
return PR_TRUE;
|
|
return PR_FALSE;
|
|
}
|
|
|
|
nsresult
|
|
nsTextFrame::FillClusterBuffer(nsPresContext *aPresContext, const PRUnichar *aText,
|
|
PRUint32 aLength, nsAutoPRUint8Buffer& aClusterBuffer)
|
|
{
|
|
nsresult rv = aClusterBuffer.GrowTo(aLength);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Fill in the cluster hint information, if it's available.
|
|
nsCOMPtr<nsIRenderingContext> acx;
|
|
PRUint32 clusterHint = 0;
|
|
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell) {
|
|
rv = shell->CreateRenderingContext(this, getter_AddRefs(acx));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Find the font metrics for this text
|
|
SetFontFromStyle(acx, mStyleContext);
|
|
|
|
acx->GetHints(clusterHint);
|
|
clusterHint &= NS_RENDERING_HINT_TEXT_CLUSTERS;
|
|
}
|
|
|
|
if (clusterHint) {
|
|
rv = acx->GetClusterInfo(aText, aLength, aClusterBuffer.mBuffer);
|
|
}
|
|
else {
|
|
memset(aClusterBuffer.mBuffer, 1, sizeof(PRInt8) * aLength);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
inline PRBool IsEndOfLine(nsFrameState aState)
|
|
{
|
|
return (aState & TEXT_IS_END_OF_LINE) ? PR_TRUE : PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Prepare the text in the content for rendering. If aIndexes is not nsnull
|
|
* then fill in aIndexes's with the mapping from the original input to
|
|
* the prepared output.
|
|
*/
|
|
void
|
|
nsTextFrame::PrepareUnicodeText(nsTextTransformer& aTX,
|
|
nsAutoIndexBuffer* aIndexBuffer,
|
|
nsAutoTextBuffer* aTextBuffer,
|
|
PRInt32* aTextLen,
|
|
PRBool aForceArabicShaping,
|
|
PRIntn* aJustifiableCharCount)
|
|
{
|
|
// Setup transform to operate starting in the content at our content
|
|
// offset
|
|
aTX.Init(this, mContent, mContentOffset, aForceArabicShaping);
|
|
|
|
PRInt32 strInx = mContentOffset;
|
|
PRInt32* indexp = aIndexBuffer ? aIndexBuffer->mBuffer : nsnull;
|
|
|
|
// Skip over the leading whitespace
|
|
PRInt32 n = mContentLength;
|
|
if (0 != (mState & TEXT_SKIP_LEADING_WS)) {
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
// Set maximum word length. This is an ABUSE of the variable
|
|
// because on entry, this is DOM content length, but on exit,
|
|
// GetNextWord returns a transformed-string length in here!
|
|
wordLen = mContentOffset + mContentLength;
|
|
aTX.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed);
|
|
// we trip this assertion in bug 31053, but I think it's unnecessary
|
|
//NS_ASSERTION(isWhitespace, "mState and content are out of sync");
|
|
|
|
if (isWhitespace) {
|
|
if (nsnull != indexp) {
|
|
// Point mapping indicies at the same content index since
|
|
// all of the compressed whitespace maps down to the same
|
|
// renderable character.
|
|
PRInt32 i = contentLen;
|
|
while (--i >= 0) {
|
|
*indexp++ = strInx;
|
|
}
|
|
}
|
|
n -= contentLen;
|
|
if(n<0)
|
|
NS_WARNING("mContentLength is < FragmentLength");
|
|
}
|
|
}
|
|
|
|
// Rescan the content and transform it. Stop when we have consumed
|
|
// mContentLength characters.
|
|
PRUint8 textTransform = GetStyleText()->mTextTransform;
|
|
PRBool inWord = (TEXT_IN_WORD & mState) ? PR_TRUE : PR_FALSE;
|
|
PRInt32 column = mColumn;
|
|
PRInt32 textLength = 0;
|
|
PRInt32 dstOffset = 0;
|
|
|
|
nsAutoTextBuffer tmpTextBuffer;
|
|
nsAutoTextBuffer* textBuffer = aTextBuffer;
|
|
if (!textBuffer && aJustifiableCharCount)
|
|
textBuffer = &tmpTextBuffer;
|
|
|
|
while (n > 0) {
|
|
PRUnichar* bp;
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
|
|
// Set maximum word length. This is an ABUSE of the variable
|
|
// because on entry, this is DOM content length, but on exit,
|
|
// GetNextWord returns a transformed-string length in here!
|
|
wordLen = mContentOffset + mContentLength;
|
|
// Get the next word
|
|
bp = aTX.GetNextWord(inWord, &wordLen, &contentLen, &isWhitespace, &wasTransformed);
|
|
if (nsnull == bp) {
|
|
if (indexp) {
|
|
while (--n >= 0) {
|
|
*indexp++ = strInx;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
inWord = PR_FALSE;
|
|
if (isWhitespace) {
|
|
if ('\t' == bp[0]) {
|
|
PRInt32 spaces = 8 - (7 & column);
|
|
PRUnichar* tp = bp;
|
|
wordLen = spaces;
|
|
while (--spaces >= 0) {
|
|
*tp++ = ' ';
|
|
}
|
|
// XXX This is a one to many mapping that I think isn't handled well
|
|
if (nsnull != indexp) {
|
|
*indexp++ = strInx;
|
|
strInx += wordLen;
|
|
}
|
|
}
|
|
else if ('\n' == bp[0]) {
|
|
if (nsnull != indexp) {
|
|
*indexp++ = strInx;
|
|
}
|
|
break;
|
|
}
|
|
else if (nsnull != indexp) {
|
|
if (1 == wordLen) {
|
|
// Point mapping indicies at the same content index since
|
|
// all of the compressed whitespace maps down to the same
|
|
// renderable character.
|
|
PRInt32 i = contentLen;
|
|
while (--i >= 0) {
|
|
*indexp++ = strInx;
|
|
}
|
|
strInx++;
|
|
} else {
|
|
// Point mapping indicies at each content index in the word
|
|
PRInt32 i = contentLen;
|
|
while (--i >= 0) {
|
|
*indexp++ = strInx++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
PRInt32 i = contentLen;
|
|
if (nsnull != indexp) {
|
|
// Point mapping indices at each content index in the word
|
|
if (!wasTransformed) {
|
|
while (--i >= 0) {
|
|
*indexp++ = strInx++;
|
|
}
|
|
} else {
|
|
PRUnichar* tp = bp;
|
|
PRBool caseChanged =
|
|
textTransform == NS_STYLE_TEXT_TRANSFORM_UPPERCASE ||
|
|
textTransform == NS_STYLE_TEXT_TRANSFORM_CAPITALIZE;
|
|
while (--i >= 0) {
|
|
PRUnichar ch = aTX.GetContentCharAt(mContentOffset +
|
|
indexp - aIndexBuffer->mBuffer);
|
|
if (IS_DISCARDED(ch) || ch == '\n') {
|
|
*indexp++ = strInx;
|
|
continue;
|
|
}
|
|
*indexp++ = strInx++;
|
|
// Point any capitalized German ß to 'SS'
|
|
if (caseChanged && ch == kSZLIG && *tp == PRUnichar('S')) {
|
|
++strInx;
|
|
++tp;
|
|
}
|
|
++tp;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Grow the buffer before we run out of room.
|
|
if (textBuffer != nsnull && dstOffset + wordLen > textBuffer->mBufferLen) {
|
|
nsresult rv = textBuffer->GrowBy(wordLen);
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
column += wordLen;
|
|
textLength += wordLen;
|
|
n -= contentLen;
|
|
if (textBuffer != nsnull) {
|
|
memcpy(textBuffer->mBuffer + dstOffset, bp,
|
|
sizeof(PRUnichar)*wordLen);
|
|
}
|
|
dstOffset += wordLen;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (aIndexBuffer) {
|
|
NS_ASSERTION(indexp <= aIndexBuffer->mBuffer + aIndexBuffer->mBufferLen,
|
|
"yikes - we just overwrote memory");
|
|
}
|
|
if (textBuffer) {
|
|
NS_ASSERTION(dstOffset <= textBuffer->mBufferLen,
|
|
"yikes - we just overwrote memory");
|
|
}
|
|
|
|
#endif
|
|
|
|
// Remove trailing whitespace if it was trimmed after reflow
|
|
// TEXT_TRIMMED_WS can be set in measureText during reflow, and
|
|
// nonexitent text buffer may occur in this situation.
|
|
if (TEXT_TRIMMED_WS & mState && textBuffer) {
|
|
if (--dstOffset >= 0) {
|
|
PRUnichar ch = textBuffer->mBuffer[dstOffset];
|
|
if (XP_IS_SPACE(ch))
|
|
textLength--;
|
|
}
|
|
}
|
|
|
|
if (aIndexBuffer) {
|
|
PRInt32* ip = aIndexBuffer->mBuffer;
|
|
ip[mContentLength] = ip[mContentLength-1];
|
|
if ((ip[mContentLength] - mContentOffset) < textLength) {
|
|
// Must set up last one for selection beyond edge if in boundary
|
|
ip[mContentLength] = textLength + mContentOffset;
|
|
}
|
|
}
|
|
|
|
*aTextLen = textLength;
|
|
|
|
if (aJustifiableCharCount && textBuffer) {
|
|
PRBool isCJ = IsChineseJapaneseLangGroup();
|
|
PRIntn numJustifiableCharacter = 0;
|
|
PRInt32 justifiableRange = textLength;
|
|
if (IsEndOfLine(mState))
|
|
justifiableRange--;
|
|
for (PRInt32 i = 0; i < justifiableRange; i++) {
|
|
if (IsJustifiableCharacter(textBuffer->mBuffer[i], isCJ))
|
|
numJustifiableCharacter++;
|
|
}
|
|
*aJustifiableCharCount = numJustifiableCharacter;
|
|
}
|
|
}
|
|
|
|
|
|
//#define SHOW_SELECTION_CURSOR // should be turned off when the caret code is activated
|
|
|
|
#ifdef SHOW_SELECTION_CURSOR
|
|
|
|
// XXX This clearly needs to be done by the container, *somehow*
|
|
#define CURSOR_COLOR NS_RGB(0,0,255)
|
|
static void
|
|
RenderSelectionCursor(nsIRenderingContext& aRenderingContext,
|
|
nscoord dx, nscoord dy, nscoord aHeight,
|
|
nscolor aCursorColor)
|
|
{
|
|
nsPoint pnts[4];
|
|
nscoord ox = aHeight / 4;
|
|
nscoord oy = ox;
|
|
nscoord x0 = dx;
|
|
nscoord y0 = dy + aHeight;
|
|
pnts[0].x = x0 - ox;
|
|
pnts[0].y = y0;
|
|
pnts[1].x = x0;
|
|
pnts[1].y = y0 - oy;
|
|
pnts[2].x = x0 + ox;
|
|
pnts[2].y = y0;
|
|
pnts[3].x = x0 - ox;
|
|
pnts[3].y = y0;
|
|
|
|
// Draw little blue triangle
|
|
aRenderingContext.SetColor(aCursorColor);
|
|
aRenderingContext.FillPolygon(pnts, 4);
|
|
}
|
|
|
|
#endif
|
|
|
|
// XXX letter-spacing
|
|
// XXX word-spacing
|
|
#if defined(XP_MACOSX)
|
|
#define NO_INVERT
|
|
#elif defined(XP_WIN) || defined(XP_OS2) || defined(XP_UNIX)
|
|
#define USE_INVERT_FOR_SELECTION
|
|
#endif
|
|
|
|
// XXX we should get the following from style sheet or LookAndFeel later
|
|
#if defined(NO_INVERT)
|
|
#define IME_UNDERLINECOLOR NS_RGB(149,149,149) //light gray
|
|
#define IME_SELECTED_UNDERLINECOLOR NS_RGB(0,0,0) //black
|
|
#else
|
|
#define IME_RAW_COLOR NS_RGB(198,33,66)
|
|
#define IME_CONVERTED_COLOR NS_RGB(255,198,198)
|
|
#endif
|
|
|
|
void
|
|
nsTextFrame::PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
nsPresContext* aPresContext,
|
|
TextPaintStyle& aTextStyle,
|
|
nscoord aX, nscoord aY, nscoord aWidth,
|
|
PRBool aRightToLeftText,
|
|
PRUnichar *aText, /*=nsnull*/
|
|
SelectionDetails *aDetails,/*= nsnull*/
|
|
PRUint32 aIndex, /*= 0*/
|
|
PRUint32 aLength, /*= 0*/
|
|
const nscoord* aSpacing /* = nsnull*/ )
|
|
|
|
{
|
|
// Quirks mode text decoration are rendered by children; see bug 1777
|
|
// In non-quirks mode, nsHTMLContainer::Paint and nsBlockFrame::Paint
|
|
// does the painting of text decorations.
|
|
if (eCompatibility_NavQuirks == aPresContext->CompatibilityMode()) {
|
|
nscolor overColor, underColor, strikeColor;
|
|
|
|
PRBool useOverride = PR_FALSE;
|
|
nscolor overrideColor;
|
|
|
|
PRUint8 decorations = NS_STYLE_TEXT_DECORATION_NONE;
|
|
// A mask of all possible decorations.
|
|
PRUint8 decorMask = NS_STYLE_TEXT_DECORATION_UNDERLINE |
|
|
NS_STYLE_TEXT_DECORATION_OVERLINE |
|
|
NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
nsStyleContext* context = aStyleContext;
|
|
PRBool hasDecorations = context->HasTextDecorations();
|
|
|
|
while (hasDecorations) {
|
|
const nsStyleTextReset* styleText = context->GetStyleTextReset();
|
|
if (!useOverride &&
|
|
(NS_STYLE_TEXT_DECORATION_OVERRIDE_ALL &
|
|
styleText->mTextDecoration)) {
|
|
// This handles the <a href="blah.html"><font color="green">La
|
|
// la la</font></a> case. The link underline should be green.
|
|
useOverride = PR_TRUE;
|
|
overrideColor = context->GetStyleColor()->mColor;
|
|
}
|
|
|
|
PRUint8 useDecorations = decorMask & styleText->mTextDecoration;
|
|
if (useDecorations) {// a decoration defined here
|
|
nscolor color = context->GetStyleColor()->mColor;
|
|
|
|
if (NS_STYLE_TEXT_DECORATION_UNDERLINE & useDecorations) {
|
|
underColor = useOverride ? overrideColor : color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
decorations |= NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_OVERLINE & useDecorations) {
|
|
overColor = useOverride ? overrideColor : color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
decorations |= NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_LINE_THROUGH & useDecorations) {
|
|
strikeColor = useOverride ? overrideColor : color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
decorations |= NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
}
|
|
}
|
|
if (0 == decorMask)
|
|
break;
|
|
context = context->GetParent();
|
|
if (!context)
|
|
break;
|
|
hasDecorations = context->HasTextDecorations();
|
|
}
|
|
|
|
nscoord offset;
|
|
nscoord size;
|
|
nscoord baseline = mAscent;
|
|
if (decorations & (NS_FONT_DECORATION_OVERLINE |
|
|
NS_FONT_DECORATION_UNDERLINE)) {
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
if (decorations & NS_FONT_DECORATION_OVERLINE) {
|
|
aRenderingContext.SetColor(overColor);
|
|
aRenderingContext.FillRect(aX, aY, aWidth, size);
|
|
}
|
|
if (decorations & NS_FONT_DECORATION_UNDERLINE) {
|
|
aRenderingContext.SetColor(underColor);
|
|
aRenderingContext.FillRect(aX, aY + baseline - offset, aWidth, size);
|
|
}
|
|
}
|
|
if (decorations & NS_FONT_DECORATION_LINE_THROUGH) {
|
|
aTextStyle.mNormalFont->GetStrikeout(offset, size);
|
|
aRenderingContext.SetColor(strikeColor);
|
|
aRenderingContext.FillRect(aX, aY + baseline - offset, aWidth, size);
|
|
}
|
|
}
|
|
|
|
if (aDetails){
|
|
nsRect rect = GetRect();
|
|
while(aDetails){
|
|
const nscoord* sp= aSpacing;
|
|
PRInt32 startOffset = 0;
|
|
PRInt32 textWidth = 0;
|
|
PRInt32 start = PR_MAX(0,(aDetails->mStart - (PRInt32)aIndex));
|
|
PRInt32 end = PR_MIN((PRInt32)aLength,(aDetails->mEnd - (PRInt32)aIndex));
|
|
PRInt32 i;
|
|
if ((start < end) && ((aLength - start) > 0))
|
|
{
|
|
//aDetails allready processed to have offsets from frame start not content offsets
|
|
if (start < end){
|
|
if (aLength == 1)
|
|
textWidth = aWidth;
|
|
else {
|
|
if (aDetails->mStart > 0){
|
|
if (sp)
|
|
{
|
|
for (i = 0; i < start;i ++){
|
|
startOffset += *sp ++;
|
|
}
|
|
}
|
|
else
|
|
aRenderingContext.GetWidth(aText, start, startOffset);
|
|
}
|
|
if (sp){
|
|
for (i = start; i < end;i ++){
|
|
textWidth += *sp ++;
|
|
}
|
|
}
|
|
else
|
|
aRenderingContext.GetWidth(aText + start,
|
|
PRUint32(end - start), textWidth);
|
|
|
|
}
|
|
nscoord offset, size;
|
|
nscoord baseline = mAscent;
|
|
switch (aDetails->mType)
|
|
{
|
|
case nsISelectionController::SELECTION_NORMAL:
|
|
#if 0
|
|
{
|
|
//using new selectionpainting now
|
|
//
|
|
// XOR InvertRect is currently implemented only in the unix and windows
|
|
// rendering contexts. When other platforms implement InvertRect(), they
|
|
// can be added here. Eventually this #ifdef should die.
|
|
//
|
|
// For platforms that dont implement InvertRect(), the selection will be
|
|
// a non-filled rectangle.
|
|
#ifdef USE_INVERT_FOR_SELECTION
|
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
|
aRenderingContext.InvertRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#else
|
|
aRenderingContext.SetColor(NS_RGB(0,0,0));
|
|
aRenderingContext.DrawRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#endif
|
|
}
|
|
#endif //0
|
|
break;
|
|
case nsISelectionController::SELECTION_SPELLCHECK:{
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetLineStyle(nsLineStyle_kDotted);
|
|
aRenderingContext.SetColor(NS_RGB(255,0,0));
|
|
/*
|
|
* If the rendering context is drawing text from right to left,
|
|
* reverse the coordinates of the underline to match.
|
|
*/
|
|
if (aRightToLeftText) {
|
|
nscoord rightEdge = aX + aWidth;
|
|
aRenderingContext.DrawLine(rightEdge - textWidth - startOffset,
|
|
aY + baseline - offset,
|
|
rightEdge - startOffset,
|
|
aY + baseline - offset);
|
|
}
|
|
else {
|
|
aRenderingContext.DrawLine(aX + startOffset,
|
|
aY + baseline - offset,
|
|
aX + startOffset + textWidth,
|
|
aY + baseline - offset);
|
|
}
|
|
}break;
|
|
|
|
#ifdef NO_INVERT
|
|
case nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT:
|
|
case nsISelectionController::SELECTION_IME_SELECTEDCONVERTEDTEXT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_SELECTED_UNDERLINECOLOR);
|
|
#ifdef XP_MACOSX // underline thickness is 2 pixel
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, 2*size);
|
|
#else
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
#endif
|
|
}break;
|
|
case nsISelectionController::SELECTION_IME_RAWINPUT:
|
|
case nsISelectionController::SELECTION_IME_CONVERTEDTEXT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_UNDERLINECOLOR);
|
|
#ifdef XP_MACOSX // underline thicness is 2 pixel
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, 2*size);
|
|
#else
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
#endif
|
|
}break;
|
|
// end NO_INVERT part
|
|
|
|
#else
|
|
case nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
#ifdef USE_INVERT_FOR_SELECTION
|
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
|
aRenderingContext.InvertRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#else
|
|
aRenderingContext.SetColor(NS_RGB(255,255,128));
|
|
aRenderingContext.DrawRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#endif
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_RAW_COLOR);
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
}break;
|
|
case nsISelectionController::SELECTION_IME_RAWINPUT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_RAW_COLOR);
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
}break;
|
|
case nsISelectionController::SELECTION_IME_SELECTEDCONVERTEDTEXT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
#ifdef USE_INVERT_FOR_SELECTION
|
|
aRenderingContext.SetColor(NS_RGB(255,255,255));
|
|
aRenderingContext.InvertRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#else
|
|
aRenderingContext.SetColor(NS_RGB(255,255,128));
|
|
aRenderingContext.DrawRect(aX + startOffset, aY, textWidth, rect.height);
|
|
#endif
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_CONVERTED_COLOR);
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
}break;
|
|
case nsISelectionController::SELECTION_IME_CONVERTEDTEXT:{
|
|
NS_ASSERTION(!aRightToLeftText,
|
|
"Right-to-left text in IME not handled");
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_CONVERTED_COLOR);
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
}break;
|
|
#endif
|
|
default:
|
|
NS_ASSERTION(0,"what type of selection do i not know about?");
|
|
break;
|
|
}
|
|
|
|
}
|
|
}
|
|
aDetails = aDetails->mNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsTextFrame::GetContentAndOffsetsForSelection(nsPresContext *aPresContext, nsIContent **aContent, PRInt32 *aOffset, PRInt32 *aLength)
|
|
{
|
|
if (!aContent || !aOffset || !aLength)
|
|
return NS_ERROR_NULL_POINTER;
|
|
//ARE WE GENERATED??
|
|
*aContent = nsnull;
|
|
*aOffset = mContentOffset;
|
|
*aLength = mContentLength;
|
|
nsIFrame *parent = GetParent();
|
|
if (parent)
|
|
{
|
|
if ((mState & NS_FRAME_GENERATED_CONTENT) != 0)//parent is generated so so are we.
|
|
{
|
|
//we COULD check the previous sibling but I dont think that is reliable
|
|
*aContent = parent->GetContent();
|
|
if(!*aContent)
|
|
return NS_ERROR_FAILURE;
|
|
NS_ADDREF(*aContent);
|
|
|
|
//ARE WE A BEFORE FRAME? if not then we assume we are an after frame. this may be bad later
|
|
nsIFrame *grandParent = parent->GetParent();
|
|
if (grandParent)
|
|
{
|
|
nsIFrame *firstParent = grandParent->GetFirstChild(nsnull);
|
|
if (firstParent)
|
|
{
|
|
*aLength = 0;
|
|
if (firstParent == parent) //then our parent is the first child of granddad. use BEFORE
|
|
{
|
|
*aOffset = 0;
|
|
}
|
|
else
|
|
{
|
|
*aOffset = (*aContent)->GetChildCount();
|
|
}
|
|
}
|
|
else
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
//END GENERATED BLOCK
|
|
if (!*aContent)
|
|
{
|
|
*aContent = mContent;
|
|
NS_IF_ADDREF(*aContent);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult nsTextFrame::GetTextInfoForPainting(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIPresShell** aPresShell,
|
|
nsISelectionController** aSelectionController,
|
|
PRBool& aDisplayingSelection,
|
|
PRBool& aIsPaginated,
|
|
PRBool& aIsSelected,
|
|
PRBool& aHideStandardSelection,
|
|
PRInt16& aSelectionValue,
|
|
nsILineBreaker** aLineBreaker)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aPresContext);
|
|
NS_ENSURE_ARG_POINTER(aPresShell);
|
|
NS_ENSURE_ARG_POINTER(aSelectionController);
|
|
NS_ENSURE_ARG_POINTER(aLineBreaker);
|
|
|
|
//get the presshell
|
|
NS_IF_ADDREF(*aPresShell = aPresContext->GetPresShell());
|
|
if (!*aPresShell)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//get the selection controller
|
|
nsresult rv = GetSelectionController(aPresContext, aSelectionController);
|
|
if (NS_FAILED(rv) || !(*aSelectionController))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
aIsPaginated = aPresContext->IsPaginated();
|
|
|
|
(*aSelectionController)->GetDisplaySelection(&aSelectionValue);
|
|
|
|
if (aIsPaginated) {
|
|
aDisplayingSelection = aPresContext->IsRenderingOnlySelection();
|
|
} else {
|
|
//if greater than hidden then we display some kind of selection
|
|
aDisplayingSelection = (aSelectionValue > nsISelectionController::SELECTION_HIDDEN);
|
|
}
|
|
|
|
PRInt16 textSel=0;
|
|
(*aSelectionController)->GetSelectionFlags(&textSel);
|
|
if (!(textSel & nsISelectionDisplay::DISPLAY_TEXT))
|
|
aDisplayingSelection = PR_FALSE;
|
|
|
|
// the spellcheck selection should be visible all the time
|
|
aHideStandardSelection = !aDisplayingSelection;
|
|
if (!aDisplayingSelection){
|
|
nsCOMPtr<nsISelection> spellcheckSelection;
|
|
(*aSelectionController)->GetSelection(nsISelectionController::SELECTION_SPELLCHECK,
|
|
getter_AddRefs(spellcheckSelection));
|
|
if (spellcheckSelection){
|
|
PRBool iscollapsed = PR_FALSE;
|
|
spellcheckSelection->GetIsCollapsed(&iscollapsed);
|
|
if (!iscollapsed)
|
|
aDisplayingSelection = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// Transform text from content into renderable form
|
|
// XXX If the text fragment is already Unicode and the text wasn't
|
|
// transformed when we formatted it, then there's no need to do all
|
|
// this and we should just render the text fragment directly. See
|
|
// PaintAsciiText()...
|
|
nsIDocument *doc = (*aPresShell)->GetDocument();
|
|
if (!doc)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
NS_IF_ADDREF(*aLineBreaker = doc->GetLineBreaker());
|
|
|
|
aIsSelected = (GetStateBits() & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsTextFrame::IsTextInSelection(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRBool hideStandardSelection;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
hideStandardSelection,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
if (NS_FAILED(indexBuffer.GrowTo(mContentLength + 1))) {
|
|
return PR_FALSE;
|
|
}
|
|
TextPaintStyle ts(aPresContext, aRenderingContext, mStyleContext);
|
|
|
|
// Transform text from content into renderable form
|
|
// XXX If the text fragment is already Unicode and the text wasn't
|
|
// transformed when we formatted it, then there's no need to do all
|
|
// this and we should just render the text fragment directly. See
|
|
// PaintAsciiText()...
|
|
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
// no need to worry about justification, that's always on the slow path
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
PRUnichar* text = paintBuffer.mBuffer;
|
|
|
|
isSelected = PR_FALSE;
|
|
if (0 != textLength) {
|
|
|
|
SelectionDetails *details = nsnull;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
//get the frameSelection from the selection controller
|
|
if (selCon) {
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
}
|
|
nsresult rv = NS_OK;
|
|
//if that failed get it from the pres shell
|
|
if (!frameSelection)
|
|
frameSelection = shell->FrameSelection();
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
PRInt32 offset;
|
|
PRInt32 length;
|
|
|
|
rv = GetContentAndOffsetsForSelection(aPresContext,
|
|
getter_AddRefs(content),
|
|
&offset, &length);
|
|
if (NS_SUCCEEDED(rv) && content) {
|
|
rv = frameSelection->LookUpSelection(content, mContentOffset,
|
|
mContentLength, &details,
|
|
PR_FALSE);
|
|
}
|
|
|
|
//where are the selection points "really"
|
|
SelectionDetails *sdptr = details;
|
|
while (sdptr){
|
|
sdptr->mStart = ip[sdptr->mStart] - mContentOffset;
|
|
sdptr->mEnd = ip[sdptr->mEnd] - mContentOffset;
|
|
sdptr = sdptr->mNext;
|
|
}
|
|
//while we have substrings...
|
|
//PRBool drawn = PR_FALSE;
|
|
DrawSelectionIterator iter(content, details,text,(PRUint32)textLength, ts, nsISelectionController::SELECTION_NORMAL, aPresContext, mStyleContext);
|
|
if (!iter.IsDone() && iter.First()) {
|
|
isSelected = PR_TRUE;
|
|
}
|
|
|
|
sdptr = details;
|
|
if (details) {
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
return isSelected;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::IsVisibleForPainting(nsPresContext * aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
PRBool aCheckVis,
|
|
PRBool* aIsVisible)
|
|
{
|
|
if (aCheckVis) {
|
|
if (!GetStyleVisibility()->IsVisible()) {
|
|
*aIsVisible = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Start by assuming we are visible and need to be painted
|
|
PRBool isVisible = PR_TRUE;
|
|
|
|
if (aPresContext->IsPaginated()) {
|
|
if (aPresContext->IsRenderingOnlySelection()) {
|
|
// Check the quick way first
|
|
PRBool isSelected = (mState & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
|
|
if (isSelected) {
|
|
isVisible = IsTextInSelection(aPresContext, aRenderingContext);
|
|
} else {
|
|
isVisible = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
*aIsVisible = isVisible;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsTextFrame::PaintUnicodeText(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection,canDarkenColor=PR_FALSE;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRBool hideStandardSelection;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
#ifdef IBMBIDI
|
|
PRBool isOddLevel = PR_FALSE;
|
|
#endif
|
|
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
hideStandardSelection,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
|
|
if(isPaginated){
|
|
canDarkenColor = CanDarken(aPresContext);
|
|
}
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
if (displaySelection) {
|
|
if (NS_FAILED(indexBuffer.GrowTo(mContentLength + 1))) {
|
|
return;
|
|
}
|
|
}
|
|
nscoord width = mRect.width;
|
|
|
|
// Transform text from content into renderable form
|
|
// XXX If the text fragment is already Unicode and the text wasn't
|
|
// transformed when we formatted it, then there's no need to do all
|
|
// this and we should just render the text fragment directly. See
|
|
// PaintAsciiText()...
|
|
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
// no need to worry about justification, that's always on the slow path
|
|
PrepareUnicodeText(tx, (displaySelection ? &indexBuffer : nsnull),
|
|
&paintBuffer, &textLength);
|
|
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
PRUnichar* text = paintBuffer.mBuffer;
|
|
|
|
if (0 != textLength)
|
|
{
|
|
#ifdef IBMBIDI
|
|
PRBool isRightToLeftOnBidiPlatform = PR_FALSE;
|
|
PRBool isBidiSystem = PR_FALSE;
|
|
nsCharType charType = eCharType_LeftToRight;
|
|
if (aPresContext->BidiEnabled()) {
|
|
isBidiSystem = aPresContext->IsBidiSystem();
|
|
isOddLevel = NS_GET_EMBEDDING_LEVEL(this) & 1;
|
|
charType = (nsCharType)NS_PTR_TO_INT32(aPresContext->PropertyTable()->GetProperty(this, nsLayoutAtoms::charType));
|
|
|
|
isRightToLeftOnBidiPlatform = (isBidiSystem &&
|
|
(eCharType_RightToLeft == charType ||
|
|
eCharType_RightToLeftArabic == charType));
|
|
if (isRightToLeftOnBidiPlatform) {
|
|
// indicate that the platform should use its native
|
|
// capabilities to reorder the text with right-to-left
|
|
// base direction
|
|
aRenderingContext.SetRightToLeftText(PR_TRUE);
|
|
}
|
|
nsBidiPresUtils* bidiUtils = aPresContext->GetBidiUtils();
|
|
if (bidiUtils) {
|
|
#ifdef DEBUG
|
|
PRInt32 rememberTextLength = textLength;
|
|
#endif
|
|
bidiUtils->ReorderUnicodeText(text, textLength,
|
|
charType, isOddLevel, isBidiSystem);
|
|
NS_ASSERTION(rememberTextLength == textLength, "Bidi formatting changed text length");
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
if (!displaySelection || !isSelected ) //draw text normally
|
|
{
|
|
// When there is no selection showing, use the fastest and
|
|
// simplest rendering approach
|
|
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, dx, dy, width, PR_FALSE);
|
|
}
|
|
else
|
|
{ //we draw according to selection rules
|
|
SelectionDetails *details = nsnull;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
//get the frameSelection from the selection controller
|
|
if (selCon)
|
|
{
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
}
|
|
//if that failed get it from the pres shell
|
|
nsresult rv = NS_OK;
|
|
if (!frameSelection)
|
|
frameSelection = shell->FrameSelection();
|
|
nsCOMPtr<nsIContent> content;
|
|
PRInt32 offset;
|
|
PRInt32 length;
|
|
|
|
rv = GetContentAndOffsetsForSelection(aPresContext,
|
|
getter_AddRefs(content),
|
|
&offset, &length);
|
|
if (NS_SUCCEEDED(rv) && content) {
|
|
rv = frameSelection->LookUpSelection(content, mContentOffset,
|
|
mContentLength, &details,
|
|
PR_FALSE);
|
|
}
|
|
|
|
//where are the selection points "really"
|
|
SelectionDetails *sdptr = details;
|
|
while (sdptr){
|
|
sdptr->mStart = ip[sdptr->mStart] - mContentOffset;
|
|
sdptr->mEnd = ip[sdptr->mEnd] - mContentOffset;
|
|
#ifdef SUNCTL
|
|
nsCOMPtr<nsILE> ctlObj;
|
|
ctlObj = do_CreateInstance(kLECID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cell based cursor movement will not be supported\n");
|
|
ctlObj = nsnull;
|
|
}
|
|
else {
|
|
PRInt32 start, end;
|
|
PRBool needsCTL = PR_FALSE;
|
|
|
|
ctlObj->NeedsCTLFix(text, sdptr->mStart, sdptr->mEnd, &needsCTL);
|
|
|
|
if (needsCTL && (sdptr->mEnd < textLength)) {
|
|
ctlObj->GetRangeOfCluster(text, PRInt32(textLength), sdptr->mEnd,
|
|
&start, &end);
|
|
if (sdptr->mStart > sdptr->mEnd) /* Left Edge */
|
|
sdptr->mEnd = start;
|
|
else
|
|
sdptr->mEnd = end;
|
|
}
|
|
|
|
/* Always start selection from a Right Edge */
|
|
if (needsCTL && (sdptr->mStart > 0)) {
|
|
ctlObj->GetRangeOfCluster(text, PRInt32(textLength),
|
|
sdptr->mStart, &start, &end);
|
|
sdptr->mStart = end;
|
|
}
|
|
}
|
|
#endif /* SUNCTL */
|
|
#ifdef IBMBIDI
|
|
AdjustSelectionPointsForBidi(sdptr, textLength, CHARTYPE_IS_RTL(charType), isOddLevel, isBidiSystem);
|
|
#endif
|
|
sdptr = sdptr->mNext;
|
|
}
|
|
if (!hideStandardSelection || displaySelection) {
|
|
/*
|
|
* Text is drawn by drawing the entire string every time, but
|
|
* using clip regions to control which part of the text is shown
|
|
* (selected or unselected.) We do this because you can't
|
|
* assume that the layout of a part of text will be the same
|
|
* when it's drawn apart from the entire string. This is true
|
|
* in languages like arabic, where shaping affects entire words.
|
|
* Simply put: length("abcd") != length("ab") + length("cd") in
|
|
* some languages.
|
|
*/
|
|
|
|
// See if this rendering backend supports getting cluster
|
|
// information.
|
|
PRUint32 clusterHint = 0;
|
|
aRenderingContext.GetHints(clusterHint);
|
|
clusterHint &= NS_RENDERING_HINT_TEXT_CLUSTERS;
|
|
|
|
//while we have substrings...
|
|
//PRBool drawn = PR_FALSE;
|
|
DrawSelectionIterator iter(content, details,text,(PRUint32)textLength,aTextStyle, selectionValue, aPresContext, mStyleContext);
|
|
if (!iter.IsDone() && iter.First())
|
|
{
|
|
nscoord currentX = dx;
|
|
nscoord newWidth;//temp
|
|
#ifdef IBMBIDI // Simon - display substrings RTL in RTL frame
|
|
nscoord FrameWidth = 0;
|
|
if (isRightToLeftOnBidiPlatform)
|
|
if (NS_SUCCEEDED(aRenderingContext.GetWidth(text, textLength, FrameWidth)))
|
|
currentX = dx + FrameWidth;
|
|
#endif
|
|
while (!iter.IsDone())
|
|
{
|
|
PRUnichar *currenttext = iter.CurrentTextUnicharPtr();
|
|
PRUint32 currentlength= iter.CurrentLength();
|
|
//TextStyle ¤tStyle = iter.CurrentStyle();
|
|
nscolor currentFGColor, currentBKColor;
|
|
PRBool isCurrentBKColorTransparent;
|
|
|
|
PRBool isSelection = iter.GetSelectionColors(¤tFGColor,
|
|
¤tBKColor,
|
|
&isCurrentBKColorTransparent);
|
|
|
|
if (currentlength > 0)
|
|
{
|
|
if (clusterHint) {
|
|
PRUint32 tmpWidth;
|
|
rv = aRenderingContext.GetRangeWidth(text, textLength, currenttext - text,
|
|
(currenttext - text) + currentlength,
|
|
tmpWidth);
|
|
newWidth = nscoord(tmpWidth);
|
|
}
|
|
else {
|
|
rv = aRenderingContext.GetWidth(currenttext, currentlength,newWidth); //ADJUST FOR CHAR SPACING
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (isRightToLeftOnBidiPlatform)
|
|
currentX -= newWidth;
|
|
if (isSelection && !isPaginated)
|
|
{//DRAW RECT HERE!!!
|
|
if (!isCurrentBKColorTransparent) {
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newWidth, mRect.height);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
newWidth = 0;
|
|
}
|
|
}
|
|
else {
|
|
newWidth = 0;
|
|
}
|
|
|
|
aRenderingContext.PushState();
|
|
|
|
nsRect rect(currentX, dy, newWidth, mRect.height);
|
|
aRenderingContext.SetClipRect(rect, nsClipCombine_kIntersect);
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(currentFGColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
}
|
|
|
|
aRenderingContext.PopState();
|
|
|
|
#ifdef IBMBIDI
|
|
if (!isRightToLeftOnBidiPlatform)
|
|
#endif
|
|
currentX += newWidth; // increment twips X start
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
}
|
|
}
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, dx, dy, width,
|
|
isRightToLeftOnBidiPlatform, text, details, 0,
|
|
(PRUint32)textLength, nsnull);
|
|
sdptr = details;
|
|
if (details){
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
#ifdef IBMBIDI
|
|
if (isRightToLeftOnBidiPlatform) {
|
|
// indicate that future text should not be reordered with
|
|
// right-to-left base direction
|
|
aRenderingContext.SetRightToLeftText(PR_FALSE);
|
|
}
|
|
#endif // IBMBIDI
|
|
}
|
|
}
|
|
|
|
//measure Spaced Textvoid
|
|
nsresult
|
|
nsTextFrame::GetPositionSlowly(nsPresContext* aPresContext,
|
|
nsIRenderingContext* aRendContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent** aNewContent,
|
|
PRInt32& aOffset)
|
|
|
|
{
|
|
// pre-condition tests
|
|
NS_PRECONDITION(aPresContext && aRendContext && aNewContent, "null arg");
|
|
if (!aPresContext || !aRendContext || !aNewContent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
// initialize out param
|
|
*aNewContent = nsnull;
|
|
|
|
TextStyle ts(aPresContext, *aRendContext, mStyleContext);
|
|
if (!ts.mSmallCaps && !ts.mWordSpacing && !ts.mLetterSpacing && !ts.mJustifying) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
nsIView * view;
|
|
nsPoint origin;
|
|
GetOffsetFromView(origin, &view);
|
|
|
|
/* This if clause is the cause of much pain. If aNewContent is set, then any
|
|
* code path that returns an error must set aNewContent to null before returning,
|
|
* or risk the caller unknowingly decrementing aNewContent inappropriately.
|
|
* Here's what Robert O'Callahan has to say on the matter:
|
|
If I'm not mistaken, in GetPositionSlowly, the values of aNewContent and
|
|
aOffset set in the conditional "if (aPoint.x - origin.x < 0)" are
|
|
overwritten on all successful return paths. Since they should never be
|
|
used by the caller if the function fails, that entire "if" statement is
|
|
--- or should be --- a no-op. Come to think of it, it doesn't make sense
|
|
either; setting aOffset to zero is nonsense.
|
|
|
|
I recommend you just delete that "if" statement.
|
|
*
|
|
* If this clause is removed, then some of the bullet-proofing code
|
|
* prefaced with "bug 56704" comments can be removed as well.
|
|
*/
|
|
if (aPoint.x - origin.x < 0)
|
|
{
|
|
*aNewContent = mContent;
|
|
aOffset =0;
|
|
}
|
|
nsIDocument *doc = GetDocument(aPresContext);
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
nsresult rv = indexBuffer.GrowTo(mContentLength + 1);
|
|
if (NS_FAILED(rv)) {
|
|
// If we've already assigned aNewContent, make sure to 0 it out here.
|
|
// See bug 56704.
|
|
*aNewContent = nsnull;
|
|
return rv;
|
|
}
|
|
|
|
// Transform text from content into renderable form
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
PRIntn numJustifiableCharacter;
|
|
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength, PR_TRUE, &numJustifiableCharacter);
|
|
if (textLength <= 0) {
|
|
// If we've already assigned aNewContent, make sure to 0 it out here.
|
|
// aNewContent is undefined in the case that we return a failure,
|
|
// If we were to return a valid pointer, we risk decrementing that node's
|
|
// ref count an extra time by the caller.
|
|
// See bug 56704 for more details.
|
|
*aNewContent = nsnull;
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
#ifdef IBMBIDI // Simon -- reverse RTL text here
|
|
PRBool isOddLevel = NS_GET_EMBEDDING_LEVEL(this) & 1;
|
|
if (isOddLevel) {
|
|
PRUnichar *tStart, *tEnd;
|
|
PRUnichar tSwap;
|
|
for (tStart = paintBuffer.mBuffer, tEnd = tStart + textLength - 1; tEnd > tStart; tStart++, tEnd--) {
|
|
tSwap = *tStart;
|
|
*tStart = *tEnd;
|
|
*tEnd = tSwap;
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
|
|
ComputeExtraJustificationSpacing(*aRendContext, ts, paintBuffer.mBuffer, textLength, numJustifiableCharacter);
|
|
|
|
//IF STYLE SAYS TO SELECT TO END OF FRAME HERE...
|
|
PRInt32 prefInt =
|
|
nsContentUtils::GetIntPref("browser.drag_out_of_frame_style");
|
|
|
|
PRBool outofstylehandled = PR_FALSE;
|
|
|
|
if (prefInt)
|
|
{
|
|
if (aPoint.y < origin.y)//above rectangle
|
|
{
|
|
aOffset = mContentOffset;
|
|
outofstylehandled = PR_TRUE;
|
|
}
|
|
else if ((aPoint.y - origin.y) > mRect.height)
|
|
{
|
|
aOffset = mContentOffset + mContentLength;
|
|
outofstylehandled = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
if (!outofstylehandled) //then we drag to closest X point and dont worry about the 'Y'
|
|
//END STYLE RULE
|
|
{
|
|
//the following will first get the index into the PAINTBUFFER then the actual content
|
|
nscoord adjustedX = PR_MAX(0,aPoint.x-origin.x);
|
|
|
|
#ifdef IBMBIDI
|
|
if (isOddLevel)
|
|
aOffset = mContentOffset + textLength -
|
|
GetLengthSlowly(*aRendContext, ts, paintBuffer.mBuffer,
|
|
textLength, PR_TRUE, adjustedX);
|
|
else
|
|
#endif
|
|
aOffset = mContentOffset +
|
|
GetLengthSlowly(*aRendContext, ts,paintBuffer.mBuffer,
|
|
textLength, PR_TRUE, adjustedX);
|
|
PRInt32 i;
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
for (i = 0;i <= mContentLength; i ++){
|
|
if ((ip[i] >= aOffset) && //reverse mapping
|
|
(! IS_LOW_SURROGATE(paintBuffer.mBuffer[ip[i]-mContentOffset]))) {
|
|
aOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
*aNewContent = mContent;
|
|
if (*aNewContent)
|
|
(*aNewContent)->AddRef();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsTextFrame::RenderString(nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
nsPresContext* aPresContext,
|
|
TextPaintStyle& aTextStyle,
|
|
PRBool aRightToLeftText,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nscoord aX, nscoord aY,
|
|
nscoord aWidth,
|
|
SelectionDetails *aDetails /*=nsnull*/)
|
|
{
|
|
PRUnichar buf[TEXT_BUF_SIZE];
|
|
PRUnichar* bp0 = buf;
|
|
|
|
nscoord spacingMem[TEXT_BUF_SIZE];
|
|
nscoord* sp0 = spacingMem;
|
|
|
|
PRBool spacing = (0 != aTextStyle.mLetterSpacing) ||
|
|
(0 != aTextStyle.mWordSpacing) || aTextStyle.mJustifying;
|
|
|
|
PRBool justifying = aTextStyle.mJustifying &&
|
|
(aTextStyle.mNumJustifiableCharacterReceivingExtraJot != 0 || aTextStyle.mExtraSpacePerJustifiableCharacter != 0);
|
|
|
|
PRBool isCJ = IsChineseJapaneseLangGroup();
|
|
PRBool isEndOfLine = aIsEndOfFrame && IsEndOfLine(mState);
|
|
|
|
//German 0x00df might expand to "SS", but no need to count it for speed reason
|
|
if (aTextStyle.mSmallCaps) {
|
|
if (aLength*2 > TEXT_BUF_SIZE) {
|
|
bp0 = new PRUnichar[aLength*2];
|
|
if (spacing)
|
|
sp0 = new nscoord[aLength*2];
|
|
}
|
|
}
|
|
else if (aLength > TEXT_BUF_SIZE) {
|
|
bp0 = new PRUnichar[aLength];
|
|
if (spacing)
|
|
sp0 = new nscoord[aLength];
|
|
}
|
|
|
|
PRUnichar* bp = bp0;
|
|
nscoord* sp = sp0;
|
|
|
|
nsIFontMetrics* lastFont = aTextStyle.mLastFont;
|
|
PRInt32 pendingCount;
|
|
PRUnichar* runStart = bp;
|
|
nscoord charWidth, width = 0;
|
|
PRInt32 countSoFar = 0;
|
|
// Save the color we want to use for the text, since calls to
|
|
// PaintTextDecorations in this method will call SetColor() on the rendering
|
|
// context.
|
|
nscolor textColor;
|
|
aRenderingContext.GetColor(textColor);
|
|
for (; --aLength >= 0; aBuffer++) {
|
|
nsIFontMetrics* nextFont;
|
|
nscoord glyphWidth = 0;
|
|
PRUnichar ch = *aBuffer;
|
|
if (aTextStyle.mSmallCaps &&
|
|
(IsLowerCase(ch) || (ch == kSZLIG))) {
|
|
nextFont = aTextStyle.mSmallFont;
|
|
}
|
|
else {
|
|
nextFont = aTextStyle.mNormalFont;
|
|
}
|
|
if (nextFont != lastFont) {
|
|
pendingCount = bp - runStart;
|
|
if (0 != pendingCount) {
|
|
// Render the text with the color specified first.
|
|
aRenderingContext.SetColor(textColor);
|
|
// Measure previous run of characters using the previous font
|
|
aRenderingContext.DrawString(runStart, pendingCount,
|
|
aX, aY + mAscent, -1,
|
|
spacing ? sp0 : nsnull);
|
|
|
|
// Note: use aY not small-y so that decorations are drawn with
|
|
// respect to the normal-font not the current font.
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, aX, aY, width,
|
|
aRightToLeftText, runStart, aDetails,
|
|
countSoFar, pendingCount, spacing ? sp0 : nsnull);
|
|
countSoFar += pendingCount;
|
|
aWidth -= width;
|
|
aX += width;
|
|
runStart = bp = bp0;
|
|
sp = sp0;
|
|
width = 0;
|
|
}
|
|
aRenderingContext.SetFont(nextFont);
|
|
lastFont = nextFont;
|
|
}
|
|
if (nextFont == aTextStyle.mSmallFont) {
|
|
PRUnichar upper_ch;
|
|
// German szlig should be expanded to "SS".
|
|
if (ch == kSZLIG)
|
|
upper_ch = (PRUnichar)'S';
|
|
else
|
|
upper_ch = ToUpperCase(ch);
|
|
aRenderingContext.GetWidth(upper_ch, charWidth);
|
|
glyphWidth += charWidth + aTextStyle.mLetterSpacing;
|
|
if (ch == kSZLIG) //add an additional 'S' here.
|
|
{
|
|
*bp++ = upper_ch;
|
|
if (spacing)
|
|
*sp++ = glyphWidth;
|
|
width += glyphWidth;
|
|
}
|
|
ch = upper_ch;
|
|
}
|
|
else if (ch == ' ') {
|
|
glyphWidth += aTextStyle.mSpaceWidth + aTextStyle.mWordSpacing + aTextStyle.mLetterSpacing;
|
|
}
|
|
else if (IS_HIGH_SURROGATE(ch) && aLength > 0 &&
|
|
IS_LOW_SURROGATE(*(aBuffer+1))) {
|
|
|
|
// special handling for surrogate pair
|
|
aRenderingContext.GetWidth(aBuffer, 2, charWidth);
|
|
glyphWidth += charWidth + aTextStyle.mLetterSpacing;
|
|
// copy the surrogate low
|
|
*bp++ = ch;
|
|
--aLength;
|
|
aBuffer++;
|
|
ch = *aBuffer;
|
|
// put the width into the space buffer
|
|
width += glyphWidth;
|
|
if (spacing)
|
|
*sp++ = glyphWidth;
|
|
// set the glyphWidth to 0 so the code later will
|
|
// set a 0 for one element in space array for surrogate low to 0
|
|
glyphWidth = 0;
|
|
}
|
|
else {
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
glyphWidth += charWidth + aTextStyle.mLetterSpacing;
|
|
}
|
|
if (justifying && (!isEndOfLine || aLength > 0)
|
|
&& IsJustifiableCharacter(ch, isCJ)) {
|
|
glyphWidth += aTextStyle.mExtraSpacePerJustifiableCharacter;
|
|
if ((PRUint32)--aTextStyle.mNumJustifiableCharacterToRender
|
|
< (PRUint32)aTextStyle.mNumJustifiableCharacterReceivingExtraJot) {
|
|
glyphWidth++;
|
|
}
|
|
}
|
|
*bp++ = ch;
|
|
if (spacing)
|
|
*sp++ = glyphWidth;
|
|
width += glyphWidth;
|
|
}
|
|
pendingCount = bp - runStart;
|
|
if (0 != pendingCount) {
|
|
// Render the text with the color specified first.
|
|
aRenderingContext.SetColor(textColor);
|
|
// Measure previous run of characters using the previous font
|
|
aRenderingContext.DrawString(runStart, pendingCount, aX, aY + mAscent, -1,
|
|
spacing ? sp0 : nsnull);
|
|
|
|
// Note: use aY not small-y so that decorations are drawn with
|
|
// respect to the normal-font not the current font.
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, aX, aY, aWidth,
|
|
aRightToLeftText, runStart, aDetails,
|
|
countSoFar, pendingCount, spacing ? sp0 : nsnull);
|
|
}
|
|
aTextStyle.mLastFont = lastFont;
|
|
|
|
if (bp0 != buf) {
|
|
delete [] bp0;
|
|
}
|
|
if (sp0 != spacingMem) {
|
|
delete [] sp0;
|
|
}
|
|
}
|
|
|
|
inline void
|
|
nsTextFrame::MeasureSmallCapsText(const nsHTMLReflowState& aReflowState,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aWord,
|
|
PRInt32 aWordLength,
|
|
PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult)
|
|
{
|
|
nsIRenderingContext& rc = *aReflowState.rendContext;
|
|
aDimensionsResult->Clear();
|
|
GetTextDimensions(rc, aTextStyle, aWord, aWordLength, aIsEndOfFrame, aDimensionsResult);
|
|
if (aTextStyle.mLastFont != aTextStyle.mNormalFont) {
|
|
rc.SetFont(aTextStyle.mNormalFont);
|
|
aTextStyle.mLastFont = aTextStyle.mNormalFont;
|
|
}
|
|
}
|
|
|
|
|
|
PRInt32
|
|
nsTextFrame::GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult,
|
|
PRBool aGetTextDimensions/* true=get dimensions false = return length up to aDimensionsResult.width size*/)
|
|
{
|
|
PRUnichar *inBuffer = aBuffer;
|
|
PRInt32 length = aLength;
|
|
nsAutoTextBuffer dimensionsBuffer;
|
|
if (NS_FAILED(dimensionsBuffer.GrowTo(length))) {
|
|
aDimensionsResult->Clear();
|
|
return 0;
|
|
}
|
|
PRUnichar* bp = dimensionsBuffer.mBuffer;
|
|
|
|
nsIFontMetrics* lastFont = aStyle.mLastFont;
|
|
nsTextDimensions sum, glyphDimensions;
|
|
PRBool justifying = aStyle.mJustifying &&
|
|
(aStyle.mNumJustifiableCharacterReceivingExtraJot != 0 || aStyle.mExtraSpacePerJustifiableCharacter != 0);
|
|
PRBool isCJ = IsChineseJapaneseLangGroup();
|
|
PRBool isEndOfLine = aIsEndOfFrame && IsEndOfLine(mState);
|
|
|
|
for (PRInt32 prevLength = length; --length >= 0; prevLength = length) {
|
|
PRUnichar ch = *inBuffer++;
|
|
if (aStyle.mSmallCaps &&
|
|
(IsLowerCase(ch) || (ch == kSZLIG))) {
|
|
PRUnichar upper_ch;
|
|
// German szlig should be expanded to "SS".
|
|
if (ch == kSZLIG)
|
|
upper_ch = (PRUnichar)'S';
|
|
else
|
|
upper_ch = ToUpperCase(ch);
|
|
if (lastFont != aStyle.mSmallFont) {
|
|
lastFont = aStyle.mSmallFont;
|
|
aRenderingContext.SetFont(lastFont);
|
|
}
|
|
aRenderingContext.GetTextDimensions(&upper_ch, (PRUint32)1, glyphDimensions);
|
|
glyphDimensions.width += aStyle.mLetterSpacing;
|
|
if (ch == kSZLIG)
|
|
glyphDimensions.width += glyphDimensions.width;
|
|
}
|
|
else if (ch == ' ') {
|
|
glyphDimensions.width = aStyle.mSpaceWidth + aStyle.mLetterSpacing
|
|
+ aStyle.mWordSpacing;
|
|
}
|
|
else {
|
|
if (lastFont != aStyle.mNormalFont) {
|
|
lastFont = aStyle.mNormalFont;
|
|
aRenderingContext.SetFont(lastFont);
|
|
}
|
|
if (IS_HIGH_SURROGATE(ch) && length > 0 &&
|
|
IS_LOW_SURROGATE(*inBuffer)) {
|
|
aRenderingContext.GetTextDimensions(inBuffer-1, (PRUint32)2, glyphDimensions);
|
|
length--;
|
|
inBuffer++;
|
|
} else {
|
|
aRenderingContext.GetTextDimensions(&ch, (PRUint32)1, glyphDimensions);
|
|
}
|
|
glyphDimensions.width += aStyle.mLetterSpacing;
|
|
}
|
|
if (justifying && (!isEndOfLine || length > 0)
|
|
&& IsJustifiableCharacter(ch, isCJ)) {
|
|
glyphDimensions.width += aStyle.mExtraSpacePerJustifiableCharacter;
|
|
if ((PRUint32)--aStyle.mNumJustifiableCharacterToMeasure
|
|
< (PRUint32)aStyle.mNumJustifiableCharacterReceivingExtraJot) {
|
|
++glyphDimensions.width;
|
|
}
|
|
}
|
|
sum.Combine(glyphDimensions);
|
|
*bp++ = ch;
|
|
if (!aGetTextDimensions && sum.width >= aDimensionsResult->width) {
|
|
PRInt32 result = aLength - length;
|
|
if (2*(sum.width - aDimensionsResult->width) > glyphDimensions.width) //then we have gone too far, back up 1
|
|
result = aLength - prevLength;
|
|
aStyle.mLastFont = lastFont;
|
|
return result;
|
|
}
|
|
}
|
|
aStyle.mLastFont = lastFont;
|
|
*aDimensionsResult = sum;
|
|
return aLength;
|
|
}
|
|
|
|
|
|
// XXX factor in logic from RenderString into here; gaps, justification, etc.
|
|
void
|
|
nsTextFrame::GetTextDimensions(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nsTextDimensions* aDimensionsResult)
|
|
{
|
|
GetTextDimensionsOrLength(aRenderingContext,aTextStyle,
|
|
aBuffer,aLength,aIsEndOfFrame,aDimensionsResult,PR_TRUE);
|
|
}
|
|
|
|
PRInt32
|
|
nsTextFrame::GetLengthSlowly(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
|
|
nscoord aWidth)
|
|
{
|
|
nsTextDimensions dimensions;
|
|
dimensions.width = aWidth;
|
|
return GetTextDimensionsOrLength(aRenderingContext,aStyle,
|
|
aBuffer,aLength,aIsEndOfFrame,&dimensions,PR_FALSE);
|
|
}
|
|
|
|
void
|
|
nsTextFrame::ComputeExtraJustificationSpacing(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
PRInt32 aNumJustifiableCharacter)
|
|
{
|
|
if (aTextStyle.mJustifying) {
|
|
nsTextDimensions trueDimensions;
|
|
|
|
// OK, so this is a bit ugly. The problem is that to get the right margin
|
|
// nice and clean, we have to apply a little extra space to *some* of the
|
|
// justifiable characters. It has to be the same ones every time or things will go haywire.
|
|
// This implies that the GetTextDimensionsOrLength and RenderString functions depend
|
|
// on a little bit of secret state: which part of the prepared text they are
|
|
// looking at. It turns out that they get called in a regular way: they look
|
|
// at the text from the beginning to the end. So we just count which justifiable character
|
|
// we're up to, for each context.
|
|
// This is not a great solution, but a perfect solution requires much more
|
|
// widespread changes, to explicitly annotate all the transformed text fragments
|
|
// that are passed around with their position in the transformed text
|
|
// for the entire frame.
|
|
aTextStyle.mNumJustifiableCharacterToMeasure = 0;
|
|
aTextStyle.mExtraSpacePerJustifiableCharacter = 0;
|
|
aTextStyle.mNumJustifiableCharacterReceivingExtraJot = 0;
|
|
|
|
GetTextDimensions(aRenderingContext, aTextStyle, aBuffer, aLength, PR_TRUE, &trueDimensions);
|
|
|
|
aTextStyle.mNumJustifiableCharacterToMeasure = aNumJustifiableCharacter;
|
|
aTextStyle.mNumJustifiableCharacterToRender = aNumJustifiableCharacter;
|
|
|
|
nscoord extraSpace = mRect.width - trueDimensions.width;
|
|
|
|
if (extraSpace > 0 && aNumJustifiableCharacter > 0) {
|
|
aTextStyle.mExtraSpacePerJustifiableCharacter = extraSpace/aNumJustifiableCharacter;
|
|
aTextStyle.mNumJustifiableCharacterReceivingExtraJot =
|
|
extraSpace - aTextStyle.mExtraSpacePerJustifiableCharacter*aNumJustifiableCharacter;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsTextFrame::PaintTextSlowly(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated,canDarkenColor=PR_FALSE;
|
|
PRBool isSelected;
|
|
PRBool hideStandardSelection;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
hideStandardSelection,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
|
|
|
|
if(isPaginated){
|
|
canDarkenColor = CanDarken(aPresContext);
|
|
}
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
if (NS_FAILED(indexBuffer.GrowTo(mContentLength + 1))) {
|
|
return;
|
|
}
|
|
nscoord width = mRect.width;
|
|
PRInt32 textLength;
|
|
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PRIntn numJustifiableCharacter;
|
|
|
|
PrepareUnicodeText(tx, (displaySelection ? &indexBuffer : nsnull),
|
|
&paintBuffer, &textLength, PR_TRUE, &numJustifiableCharacter);
|
|
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
PRUnichar* text = paintBuffer.mBuffer;
|
|
|
|
if (0 != textLength) {
|
|
#ifdef IBMBIDI
|
|
PRBool isRightToLeftOnBidiPlatform = PR_FALSE;
|
|
PRBool isBidiSystem = PR_FALSE;
|
|
PRBool isOddLevel = PR_FALSE;
|
|
PRUint32 hints = 0;
|
|
aRenderingContext.GetHints(hints);
|
|
PRBool paintCharByChar = (0 == (hints & NS_RENDERING_HINT_REORDER_SPACED_TEXT)) &&
|
|
((0 != aTextStyle.mLetterSpacing) ||
|
|
(0 != aTextStyle.mWordSpacing) ||
|
|
aTextStyle.mJustifying);
|
|
nsCharType charType = eCharType_LeftToRight;
|
|
|
|
if (aPresContext->BidiEnabled()) {
|
|
isBidiSystem = aPresContext->IsBidiSystem();
|
|
nsBidiPresUtils* bidiUtils = aPresContext->GetBidiUtils();
|
|
|
|
if (bidiUtils) {
|
|
isOddLevel = NS_GET_EMBEDDING_LEVEL(this) & 1;
|
|
charType = (nsCharType)NS_PTR_TO_INT32(aPresContext->PropertyTable()->GetProperty(this, nsLayoutAtoms::charType));
|
|
#ifdef DEBUG
|
|
PRInt32 rememberTextLength = textLength;
|
|
#endif
|
|
isRightToLeftOnBidiPlatform = (!paintCharByChar &&
|
|
isBidiSystem &&
|
|
(eCharType_RightToLeft == charType ||
|
|
eCharType_RightToLeftArabic == charType));
|
|
if (isRightToLeftOnBidiPlatform) {
|
|
// indicate that the platform should use its native
|
|
// capabilities to reorder the text with right-to-left
|
|
// base direction
|
|
aRenderingContext.SetRightToLeftText(PR_TRUE);
|
|
}
|
|
// If we will be painting char by char, handle the text like on non-bidi platform
|
|
bidiUtils->ReorderUnicodeText(text, textLength, charType,
|
|
isOddLevel, (paintCharByChar) ? PR_FALSE : isBidiSystem);
|
|
NS_ASSERTION(rememberTextLength == textLength, "Bidi formatting changed text length");
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
ComputeExtraJustificationSpacing(aRenderingContext, aTextStyle, text, textLength, numJustifiableCharacter);
|
|
if (!displaySelection || !isSelected) {
|
|
// When there is no selection showing, use the fastest and
|
|
// simplest rendering approach
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
RenderString(aRenderingContext, aStyleContext, aPresContext, aTextStyle,
|
|
PR_FALSE, text, textLength, PR_TRUE, dx, dy, width);
|
|
}
|
|
else
|
|
{
|
|
SelectionDetails *details = nsnull;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
//get the frame selection
|
|
nsresult rv = NS_OK;
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
if (!frameSelection)//if that failed get it from the presshell
|
|
frameSelection = shell->FrameSelection();
|
|
nsCOMPtr<nsIContent> content;
|
|
PRInt32 offset;
|
|
PRInt32 length;
|
|
|
|
rv = GetContentAndOffsetsForSelection(aPresContext,
|
|
getter_AddRefs(content),
|
|
&offset, &length);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = frameSelection->LookUpSelection(content, mContentOffset,
|
|
mContentLength, &details,
|
|
PR_FALSE);
|
|
}
|
|
|
|
//where are the selection points "really"
|
|
SelectionDetails *sdptr = details;
|
|
while (sdptr){
|
|
sdptr->mStart = ip[sdptr->mStart] - mContentOffset;
|
|
sdptr->mEnd = ip[sdptr->mEnd] - mContentOffset;
|
|
#ifdef IBMBIDI
|
|
AdjustSelectionPointsForBidi(sdptr, textLength,
|
|
CHARTYPE_IS_RTL(charType), isOddLevel,
|
|
(paintCharByChar) ? PR_FALSE : isBidiSystem);
|
|
#endif
|
|
sdptr = sdptr->mNext;
|
|
}
|
|
|
|
DrawSelectionIterator iter(content, details,text,(PRUint32)textLength,aTextStyle, selectionValue, aPresContext, mStyleContext);
|
|
if (!iter.IsDone() && iter.First())
|
|
{
|
|
nscoord currentX = dx;
|
|
nsTextDimensions newDimensions;//temp
|
|
#ifdef IBMBIDI // Simon - display substrings RTL in RTL frame
|
|
if (isRightToLeftOnBidiPlatform)
|
|
{
|
|
nsTextDimensions frameDimensions;
|
|
GetTextDimensions(aRenderingContext, aTextStyle, text,
|
|
(PRInt32)textLength, iter.IsLast(), &frameDimensions);
|
|
currentX = dx + frameDimensions.width;
|
|
}
|
|
#endif
|
|
while (!iter.IsDone())
|
|
{
|
|
PRUnichar *currenttext = iter.CurrentTextUnicharPtr();
|
|
PRUint32 currentlength= iter.CurrentLength();
|
|
//TextStyle ¤tStyle = iter.CurrentStyle();
|
|
nscolor currentFGColor, currentBKColor;
|
|
PRBool isCurrentBKColorTransparent;
|
|
PRBool isSelection = iter.GetSelectionColors(¤tFGColor,
|
|
¤tBKColor,
|
|
&isCurrentBKColorTransparent);
|
|
PRBool isEndOfFrame = iter.IsLast();
|
|
GetTextDimensions(aRenderingContext, aTextStyle, currenttext,
|
|
(PRInt32)currentlength, isEndOfFrame, &newDimensions);
|
|
if (newDimensions.width)
|
|
{
|
|
#ifdef IBMBIDI
|
|
if (isRightToLeftOnBidiPlatform)
|
|
currentX -= newDimensions.width;
|
|
#endif
|
|
if (isSelection && !isPaginated)
|
|
{//DRAW RECT HERE!!!
|
|
if (!isCurrentBKColorTransparent) {
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newDimensions.width, mRect.height);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor, canDarkenColor));
|
|
RenderString(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, isRightToLeftOnBidiPlatform,
|
|
currenttext, currentlength, isEndOfFrame,
|
|
currentX, dy, newDimensions.width, details);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(currentFGColor, canDarkenColor));
|
|
RenderString(aRenderingContext,aStyleContext, aPresContext,
|
|
aTextStyle, isRightToLeftOnBidiPlatform,
|
|
currenttext, currentlength, isEndOfFrame,
|
|
currentX, dy, newDimensions.width, details);
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
if (!isRightToLeftOnBidiPlatform)
|
|
#endif
|
|
// increment twips X start but remember to get ready for
|
|
// next draw by reducing current x by letter spacing amount
|
|
currentX += newDimensions.width; // + aTextStyle.mLetterSpacing;
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
RenderString(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, isRightToLeftOnBidiPlatform, text,
|
|
PRUint32(textLength), PR_TRUE, dx, dy, width, details);
|
|
}
|
|
sdptr = details;
|
|
if (details){
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
#ifdef IBMBIDI
|
|
if (isRightToLeftOnBidiPlatform) {
|
|
// indicate that future text should not be reordered with
|
|
// right-to-left base direction
|
|
aRenderingContext.SetRightToLeftText(PR_FALSE);
|
|
}
|
|
#endif // IBMBIDI
|
|
}
|
|
}
|
|
|
|
void
|
|
nsTextFrame::PaintAsciiText(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsStyleContext* aStyleContext,
|
|
TextPaintStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
NS_PRECONDITION(0 == (TEXT_HAS_MULTIBYTE & mState), "text is multi-byte");
|
|
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection,canDarkenColor=PR_FALSE;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRBool hideStandardSelection;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
hideStandardSelection,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
|
|
if(isPaginated){
|
|
canDarkenColor = CanDarken(aPresContext);
|
|
}
|
|
|
|
// Get the text fragment
|
|
nsCOMPtr<nsITextContent> tc = do_QueryInterface(mContent);
|
|
const nsTextFragment* frag = nsnull;
|
|
if (tc) {
|
|
frag = tc->Text();
|
|
|
|
if (!frag) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer unicodePaintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
if (displaySelection) {
|
|
if (NS_FAILED(indexBuffer.GrowTo(mContentLength + 1))) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
|
|
// See if we need to transform the text. If the text fragment is ascii and
|
|
// wasn't transformed, then we can skip this step. If we're displaying the
|
|
// selection and the text is selected, then we need to do this step so we
|
|
// can create the index buffer
|
|
PRInt32 textLength = 0;
|
|
const char* text;
|
|
char paintBufMem[TEXT_BUF_SIZE];
|
|
char* paintBuf = paintBufMem;
|
|
if (frag->Is2b() ||
|
|
(0 != (mState & TEXT_WAS_TRANSFORMED)) ||
|
|
(displaySelection && isSelected)) {
|
|
|
|
// Transform text from content into Unicode renderable form
|
|
// XXX If the text fragment is ascii, then we should ask the
|
|
// text transformer to leave the text in ascii. That way we can
|
|
// elimninate the conversion from Unicode back to ascii...
|
|
PrepareUnicodeText(tx, (displaySelection ? &indexBuffer : nsnull),
|
|
&unicodePaintBuffer, &textLength);
|
|
|
|
|
|
// Translate unicode data into ascii for rendering
|
|
if (textLength > TEXT_BUF_SIZE) {
|
|
paintBuf = new char[textLength];
|
|
if (!paintBuf) {
|
|
return;
|
|
}
|
|
}
|
|
char* dst = paintBuf;
|
|
char* end = dst + textLength;
|
|
PRUnichar* src = unicodePaintBuffer.mBuffer;
|
|
while (dst < end) {
|
|
*dst++ = (char) ((unsigned char) *src++);
|
|
}
|
|
|
|
text = paintBuf;
|
|
|
|
}
|
|
else if (mContentOffset + mContentLength <= frag->GetLength()) {
|
|
text = frag->Get1b() + mContentOffset;
|
|
textLength = mContentLength;
|
|
|
|
// See if we should skip leading whitespace
|
|
if (0 != (mState & TEXT_SKIP_LEADING_WS)) {
|
|
while ((textLength > 0) && XP_IS_SPACE(*text)) {
|
|
text++;
|
|
textLength--;
|
|
}
|
|
}
|
|
|
|
// See if the text ends in a newline
|
|
if ((textLength > 0) && (text[textLength - 1] == '\n')) {
|
|
textLength--;
|
|
}
|
|
NS_ASSERTION(textLength >= 0, "bad text length");
|
|
}
|
|
else {
|
|
// This might happen if a paint event beats the reflow; e.g., as
|
|
// is the case in bug 73291. Not a big deal, because the reflow
|
|
// will schedule another invalidate.
|
|
NS_WARNING("content length exceeds fragment length");
|
|
}
|
|
|
|
nscoord width = mRect.width;
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
|
|
if (0 != textLength) {
|
|
if (!displaySelection || !isSelected) {
|
|
//if selection is > content length then selection has "slid off"
|
|
// When there is no selection showing, use the fastest and
|
|
// simplest rendering approach
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
PaintTextDecorations(aRenderingContext, aStyleContext,
|
|
aPresContext, aTextStyle, dx, dy, width, PR_FALSE);
|
|
}
|
|
else {
|
|
SelectionDetails *details;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
//get the frame selection
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
nsresult rv = NS_OK;
|
|
if (!frameSelection)//if that failed get it from the presshell
|
|
frameSelection = shell->FrameSelection();
|
|
nsCOMPtr<nsIContent> content;
|
|
PRInt32 offset;
|
|
PRInt32 length;
|
|
|
|
rv = GetContentAndOffsetsForSelection(aPresContext,
|
|
getter_AddRefs(content),
|
|
&offset, &length);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
rv = frameSelection->LookUpSelection(content, mContentOffset,
|
|
mContentLength, &details,
|
|
PR_FALSE);
|
|
}
|
|
|
|
//where are the selection points "really"
|
|
SelectionDetails *sdptr = details;
|
|
while (sdptr){
|
|
sdptr->mStart = ip[sdptr->mStart] - mContentOffset;
|
|
sdptr->mEnd = ip[sdptr->mEnd] - mContentOffset;
|
|
sdptr = sdptr->mNext;
|
|
}
|
|
|
|
if (!hideStandardSelection || displaySelection) {
|
|
//ITS OK TO CAST HERE THE RESULT WE USE WILLNOT DO BAD CONVERSION
|
|
DrawSelectionIterator iter(content, details,(PRUnichar *)text,(PRUint32)textLength,aTextStyle,
|
|
selectionValue, aPresContext, mStyleContext);
|
|
|
|
// See if this rendering backend supports getting cluster
|
|
// information.
|
|
PRUint32 clusterHint = 0;
|
|
aRenderingContext.GetHints(clusterHint);
|
|
clusterHint &= NS_RENDERING_HINT_TEXT_CLUSTERS;
|
|
|
|
nscoord foo;
|
|
aRenderingContext.GetWidth(text, textLength, foo);
|
|
|
|
if (!iter.IsDone() && iter.First())
|
|
{
|
|
nscoord currentX = dx;
|
|
nscoord newWidth;//temp
|
|
while (!iter.IsDone())
|
|
{
|
|
char *currenttext = iter.CurrentTextCStrPtr();
|
|
PRUint32 currentlength= iter.CurrentLength();
|
|
//TextStyle ¤tStyle = iter.CurrentStyle();
|
|
nscolor currentFGColor, currentBKColor;
|
|
PRBool isCurrentBKColorTransparent;
|
|
|
|
if (clusterHint) {
|
|
PRUint32 tmpWidth;
|
|
rv = aRenderingContext.GetRangeWidth(text, textLength, currenttext - text,
|
|
(currenttext - text) + currentlength,
|
|
tmpWidth);
|
|
newWidth = nscoord(tmpWidth);
|
|
}
|
|
else {
|
|
rv = aRenderingContext.GetWidth(currenttext, currentlength,newWidth); //ADJUST FOR CHAR SPACING
|
|
}
|
|
|
|
PRBool isSelection = iter.GetSelectionColors(¤tFGColor,
|
|
¤tBKColor,
|
|
&isCurrentBKColorTransparent);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (isSelection && !isPaginated)
|
|
{//DRAW RECT HERE!!!
|
|
if (!isCurrentBKColorTransparent) {
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newWidth, mRect.height);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
newWidth =0;
|
|
}
|
|
|
|
aRenderingContext.PushState();
|
|
|
|
nsRect rect(currentX, dy, newWidth, mRect.height);
|
|
aRenderingContext.SetClipRect(rect, nsClipCombine_kIntersect);
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(currentFGColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
}
|
|
|
|
aRenderingContext.PopState();
|
|
|
|
currentX+=newWidth;//increment twips X start
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy + mAscent);
|
|
}
|
|
}
|
|
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aPresContext,
|
|
aTextStyle, dx, dy, width, PR_FALSE,
|
|
unicodePaintBuffer.mBuffer,
|
|
details, 0, textLength);
|
|
sdptr = details;
|
|
if (details){
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Cleanup
|
|
if (paintBuf != paintBufMem) {
|
|
delete [] paintBuf;
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------
|
|
// Also defined for external use in nsTextFrame.h
|
|
//
|
|
// Uses a binary search for find where the cursor falls in the line of text
|
|
// It also keeps track of the part of the string that has already been measured
|
|
// so it doesn't have to keep measuring the same text over and over
|
|
//
|
|
// Param "aBaseWidth" contains the width in twips of the portion
|
|
// of the text that has already been measured, and aBaseInx contains
|
|
// the index of the text that has already been measured.
|
|
//
|
|
// aTextWidth returns the (in twips) the length of the text that falls before the cursor
|
|
// aIndex contains the index of the text where the cursor falls
|
|
PRBool
|
|
BinarySearchForPosition(nsIRenderingContext* aRendContext,
|
|
const PRUnichar* aText,
|
|
PRInt32 aBaseWidth,
|
|
PRInt32 aBaseInx,
|
|
PRInt32 aStartInx,
|
|
PRInt32 aEndInx,
|
|
PRInt32 aCursorPos,
|
|
PRInt32& aIndex,
|
|
PRInt32& aTextWidth)
|
|
{
|
|
PRInt32 range = aEndInx - aStartInx;
|
|
if ((range == 1) || (range == 2 && IS_HIGH_SURROGATE(aText[aStartInx]))) {
|
|
aIndex = aStartInx + aBaseInx;
|
|
aRendContext->GetWidth(aText, aIndex, aTextWidth);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRInt32 inx = aStartInx + (range / 2);
|
|
|
|
// Make sure we don't leave a dangling low surrogate
|
|
if (IS_HIGH_SURROGATE(aText[inx-1]))
|
|
inx++;
|
|
|
|
PRInt32 textWidth = 0;
|
|
aRendContext->GetWidth(aText, inx, textWidth);
|
|
|
|
PRInt32 fullWidth = aBaseWidth + textWidth;
|
|
if (fullWidth == aCursorPos) {
|
|
aTextWidth = textWidth;
|
|
aIndex = inx;
|
|
return PR_TRUE;
|
|
} else if (aCursorPos < fullWidth) {
|
|
aTextWidth = aBaseWidth;
|
|
if (BinarySearchForPosition(aRendContext, aText, aBaseWidth, aBaseInx, aStartInx, inx, aCursorPos, aIndex, aTextWidth)) {
|
|
return PR_TRUE;
|
|
}
|
|
} else {
|
|
aTextWidth = fullWidth;
|
|
if (BinarySearchForPosition(aRendContext, aText, aBaseWidth, aBaseInx, inx, aEndInx, aCursorPos, aIndex, aTextWidth)) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
// Uses a binary search to find the position of the cursor in the text.
|
|
// The "indices array is used to map from the compressed text back to the
|
|
// un-compressed text, selection is based on the un-compressed text, the visual
|
|
// display of selection is based on the compressed text.
|
|
//---------------------------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetPosition(nsPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd)
|
|
|
|
{
|
|
// pre-condition tests
|
|
NS_PRECONDITION(aPresContext && aNewContent, "null arg");
|
|
if (!aPresContext || !aNewContent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
// initialize out param
|
|
*aNewContent = nsnull;
|
|
|
|
DEBUG_VERIFY_NOT_DIRTY(mState);
|
|
if (mState & NS_FRAME_IS_DIRTY)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell) {
|
|
nsCOMPtr<nsIRenderingContext> rendContext;
|
|
nsresult rv = shell->CreateRenderingContext(this, getter_AddRefs(rendContext));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
TextStyle ts(aPresContext, *rendContext, mStyleContext);
|
|
if (ts.mSmallCaps || ts.mWordSpacing || ts.mLetterSpacing || ts.mJustifying) {
|
|
nsresult result = GetPositionSlowly(aPresContext, rendContext, aPoint, aNewContent,
|
|
aContentOffset);
|
|
aContentOffsetEnd = aContentOffset;
|
|
return result;
|
|
}
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
rv = indexBuffer.GrowTo(mContentLength + 1);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// Find the font metrics for this text
|
|
SetFontFromStyle(rendContext, mStyleContext);
|
|
|
|
// Get the renderable form of the text
|
|
nsIDocument *doc = GetDocument(aPresContext);
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
// no need to worry about justification, that's always on the slow path
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
nsPoint origin;
|
|
nsIView * view;
|
|
GetOffsetFromView(origin, &view);
|
|
|
|
//IF STYLE SAYS TO SELECT TO END OF FRAME HERE...
|
|
PRInt32 prefInt =
|
|
nsContentUtils::GetIntPref("browser.drag_out_of_frame_style");
|
|
PRBool outofstylehandled = PR_FALSE;
|
|
|
|
if (prefInt)
|
|
{
|
|
if ((aPoint.y - origin.y) < 0)//above rectangle
|
|
{
|
|
aContentOffset = mContentOffset;
|
|
aContentOffsetEnd = aContentOffset;
|
|
outofstylehandled = PR_TRUE;
|
|
}
|
|
else if ((aPoint.y - origin.y) > mRect.height)
|
|
{
|
|
aContentOffset = mContentOffset + mContentLength;
|
|
aContentOffsetEnd = aContentOffset;
|
|
outofstylehandled = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
if (textLength <= 0) {
|
|
aContentOffset = mContentOffset;
|
|
aContentOffsetEnd = aContentOffset;
|
|
}
|
|
else if (!outofstylehandled) //then we need to track based on the X coord only
|
|
{
|
|
//END STYLE IF
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
|
|
PRInt32 indx;
|
|
PRInt32 textWidth = 0;
|
|
PRUnichar* text = paintBuffer.mBuffer;
|
|
|
|
// See if the font backend will do all the hard work for us.
|
|
PRUint32 clusterHint = 0;
|
|
rendContext->GetHints(clusterHint);
|
|
clusterHint &= NS_RENDERING_HINT_TEXT_CLUSTERS;
|
|
if (clusterHint) {
|
|
nsPoint pt;
|
|
pt.x = aPoint.x - origin.x;
|
|
pt.y = aPoint.y - origin.y;
|
|
indx = rendContext->GetPosition(text, textLength, pt);
|
|
}
|
|
else {
|
|
#ifdef IBMBIDI
|
|
PRBool getReversedPos = NS_GET_EMBEDDING_LEVEL(this) & 1;
|
|
nscoord posX = (getReversedPos) ?
|
|
(mRect.width + origin.x) - (aPoint.x - origin.x) : aPoint.x;
|
|
|
|
PRBool found = BinarySearchForPosition(rendContext, text, origin.x, 0, 0,
|
|
PRInt32(textLength),
|
|
PRInt32(posX) , //go to local coordinates
|
|
indx, textWidth);
|
|
|
|
#else
|
|
PRBool found = BinarySearchForPosition(rendContext, text, origin.x, 0, 0,
|
|
PRInt32(textLength),
|
|
PRInt32(aPoint.x) , //go to local coordinates
|
|
indx, textWidth);
|
|
#endif // IBMBIDI
|
|
if (found) {
|
|
PRInt32 charWidth;
|
|
if (IS_HIGH_SURROGATE(text[indx]))
|
|
rendContext->GetWidth(&text[indx], 2, charWidth);
|
|
else
|
|
rendContext->GetWidth(text[indx], charWidth);
|
|
charWidth /= 2;
|
|
|
|
#ifdef IBMBIDI
|
|
if (getReversedPos) {
|
|
if (mRect.width - aPoint.x + origin.x > textWidth+charWidth ) {
|
|
indx++;
|
|
}
|
|
}
|
|
else
|
|
#endif // IBMBIDI
|
|
if ((aPoint.x - origin.x) > textWidth+charWidth) {
|
|
indx++;
|
|
}
|
|
}
|
|
}
|
|
|
|
aContentOffset = indx + mContentOffset;
|
|
//reusing wordBufMem
|
|
PRInt32 i;
|
|
for (i = 0; i < mContentLength; i ++){
|
|
if ((ip[i] >= aContentOffset) && //reverse mapping
|
|
(! IS_LOW_SURROGATE(paintBuffer.mBuffer[ip[i]-mContentOffset]))) {
|
|
break;
|
|
}
|
|
}
|
|
aContentOffset = i + mContentOffset;
|
|
#ifdef IBMBIDI
|
|
PRInt32 bidiStopOffset = mContentOffset + mContentLength;
|
|
|
|
if (aContentOffset >= mContentOffset && aContentOffset < bidiStopOffset) {
|
|
PRInt32 curindx = ip[aContentOffset - mContentOffset] - mContentOffset;
|
|
while (curindx < textLength && IS_BIDI_DIACRITIC(text[curindx])) {
|
|
if (++aContentOffset >= bidiStopOffset)
|
|
break;
|
|
curindx = ip[aContentOffset - mContentOffset] - mContentOffset;
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
aContentOffsetEnd = aContentOffset;
|
|
NS_ASSERTION(i<= mContentLength, "offset we got from binary search is messed up");
|
|
}
|
|
*aNewContent = mContent;
|
|
if (*aNewContent) {
|
|
(*aNewContent)->AddRef();
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetContentAndOffsetsFromPoint(nsPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent)
|
|
{
|
|
if (!aNewContent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
*aNewContent = nsnull;//initialize
|
|
aContentOffset = 0;
|
|
aContentOffsetEnd = 0;
|
|
aBeginFrameContent = 0;
|
|
|
|
DEBUG_VERIFY_NOT_DIRTY(mState);
|
|
if (mState & NS_FRAME_IS_DIRTY)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
nsPoint newPoint;
|
|
newPoint.y = aPoint.y;
|
|
if (aPoint.x < 0)
|
|
newPoint.x = 0;
|
|
else
|
|
newPoint.x = aPoint.x;
|
|
nsresult rv = GetPosition(aPresContext, newPoint, aNewContent, aContentOffset, aContentOffsetEnd);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
if (aContentOffset == mContentOffset)
|
|
aBeginFrameContent = PR_TRUE;
|
|
else
|
|
aBeginFrameContent = PR_FALSE;
|
|
return rv;
|
|
}
|
|
|
|
|
|
// [HACK] Foward Declarations
|
|
void ForceDrawFrame(nsFrame * aFrame);
|
|
|
|
//null range means the whole thing
|
|
NS_IMETHODIMP
|
|
nsTextFrame::SetSelected(nsPresContext* aPresContext,
|
|
nsIDOMRange *aRange,
|
|
PRBool aSelected,
|
|
nsSpread aSpread)
|
|
{
|
|
if (aSelected && ParentDisablesSelection())
|
|
return NS_OK;
|
|
|
|
#if 0
|
|
PRBool isSelected = ((GetStateBits() & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT);
|
|
if (!aSelected && !isSelected) //already set thanks
|
|
{
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
// check whether style allows selection
|
|
PRBool selectable;
|
|
IsSelectable(&selectable, nsnull);
|
|
if (!selectable)
|
|
return NS_OK;//do not continue no selection for this frame.
|
|
|
|
PRBool found = PR_FALSE;
|
|
if (aRange) {
|
|
//lets see if the range contains us, if so we must redraw!
|
|
nsCOMPtr<nsIDOMNode> endNode;
|
|
PRInt32 endOffset;
|
|
nsCOMPtr<nsIDOMNode> startNode;
|
|
PRInt32 startOffset;
|
|
aRange->GetEndContainer(getter_AddRefs(endNode));
|
|
aRange->GetEndOffset(&endOffset);
|
|
aRange->GetStartContainer(getter_AddRefs(startNode));
|
|
aRange->GetStartOffset(&startOffset);
|
|
nsCOMPtr<nsIDOMNode> thisNode = do_QueryInterface(GetContent());
|
|
|
|
if (thisNode == startNode)
|
|
{
|
|
if ((mContentOffset + mContentLength) >= startOffset)
|
|
{
|
|
found = PR_TRUE;
|
|
if (thisNode == endNode)
|
|
{ //special case
|
|
if (endOffset == startOffset) //no need to redraw since drawing takes place with cursor
|
|
found = PR_FALSE;
|
|
|
|
if (mContentOffset > endOffset)
|
|
found = PR_FALSE;
|
|
}
|
|
}
|
|
}
|
|
else if (thisNode == endNode)
|
|
{
|
|
if (mContentOffset < endOffset)
|
|
found = PR_TRUE;
|
|
else
|
|
{
|
|
found = PR_FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
else {
|
|
// null range means the whole thing
|
|
found = PR_TRUE;
|
|
}
|
|
|
|
if ( aSelected )
|
|
AddStateBits(NS_FRAME_SELECTED_CONTENT);
|
|
else
|
|
{//we need to see if any other selection available.
|
|
SelectionDetails *details = nsnull;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
|
|
nsIPresShell *shell = aPresContext->GetPresShell();
|
|
if (shell) {
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsresult rv = GetSelectionController(aPresContext,
|
|
getter_AddRefs(selCon));
|
|
if (NS_SUCCEEDED(rv) && selCon)
|
|
{
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
}
|
|
if (!frameSelection)
|
|
frameSelection = shell->FrameSelection();
|
|
|
|
nsCOMPtr<nsIContent> content;
|
|
PRInt32 offset;
|
|
PRInt32 length;
|
|
|
|
rv = GetContentAndOffsetsForSelection(aPresContext,
|
|
getter_AddRefs(content),
|
|
&offset, &length);
|
|
if (NS_SUCCEEDED(rv) && content) {
|
|
rv = frameSelection->LookUpSelection(content, offset,
|
|
length, &details, PR_TRUE);
|
|
// PR_TRUE last param used here! we need to see if we are still selected. so no shortcut
|
|
}
|
|
}
|
|
if (!details)
|
|
RemoveStateBits(NS_FRAME_SELECTED_CONTENT);
|
|
else
|
|
{
|
|
SelectionDetails *sdptr = details;
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
if (found){ //if range contains this frame...
|
|
// Selection might change our border, content and outline appearance
|
|
// But textframes can't have an outline. So just use the simple
|
|
// bounds
|
|
Invalidate(nsRect(0, 0, mRect.width, mRect.height), PR_FALSE);
|
|
}
|
|
if (aSpread == eSpreadDown)
|
|
{
|
|
nsIFrame* frame = GetPrevInFlow();
|
|
while(frame){
|
|
frame->SetSelected(aPresContext, aRange,aSelected,eSpreadNone);
|
|
frame = frame->GetPrevInFlow();
|
|
}
|
|
frame = GetNextInFlow();
|
|
while (frame){
|
|
frame->SetSelected(aPresContext, aRange,aSelected,eSpreadNone);
|
|
frame = frame->GetNextInFlow();
|
|
}
|
|
#ifdef IBMBIDI
|
|
if ((mState & NS_FRAME_IS_BIDI) &&
|
|
(frame = NS_STATIC_CAST(nsIFrame*,
|
|
aPresContext->PropertyTable()->GetProperty(this, nsLayoutAtoms::nextBidi)))) {
|
|
frame->SetSelected(aPresContext, aRange, aSelected, aSpread);
|
|
}
|
|
#endif // IBMBIDI
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetPointFromOffset(nsPresContext* aPresContext,
|
|
nsIRenderingContext* inRendContext,
|
|
PRInt32 inOffset,
|
|
nsPoint* outPoint)
|
|
{
|
|
if (!aPresContext || !inRendContext || !outPoint)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
outPoint->x = 0;
|
|
outPoint->y = 0;
|
|
|
|
DEBUG_VERIFY_NOT_DIRTY(mState);
|
|
if (mState & NS_FRAME_IS_DIRTY)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
if (mContentLength <= 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
inOffset-=mContentOffset;
|
|
if (inOffset < 0){
|
|
NS_ASSERTION(0,"offset less than this frame has in GetPointFromOffset");
|
|
inOffset = 0;
|
|
}
|
|
if (inOffset >= mContentLength)
|
|
inOffset = mContentLength;
|
|
TextStyle ts(aPresContext, *inRendContext, mStyleContext);
|
|
|
|
// Make enough space to transform
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
nsresult rv = indexBuffer.GrowTo(mContentLength + 1);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
// Transform text from content into renderable form
|
|
nsIDocument *doc = GetDocument(aPresContext);
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
PRIntn numJustifiableCharacter;
|
|
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength, PR_FALSE, &numJustifiableCharacter);
|
|
|
|
ComputeExtraJustificationSpacing(*inRendContext, ts, paintBuffer.mBuffer, textLength, numJustifiableCharacter);
|
|
|
|
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
if (inOffset > mContentLength){
|
|
NS_ASSERTION(0, "invalid offset passed to GetPointFromOffset");
|
|
inOffset = mContentLength;
|
|
}
|
|
|
|
while (inOffset >=0 && ip[inOffset] < mContentOffset) //buffer has shrunk
|
|
inOffset --;
|
|
nscoord width = mRect.width;
|
|
if (inOffset <0)
|
|
{
|
|
NS_ASSERTION(0, "invalid offset passed to GetPointFromOffset");
|
|
inOffset=0;
|
|
width = 0;
|
|
}
|
|
else
|
|
{
|
|
PRInt32 hitLength = ip[inOffset] - mContentOffset;
|
|
if (ts.mSmallCaps || (0 != ts.mWordSpacing) || (0 != ts.mLetterSpacing) || ts.mJustifying)
|
|
{
|
|
nsTextDimensions dimensions;
|
|
GetTextDimensions(*inRendContext, ts, paintBuffer.mBuffer, hitLength,
|
|
textLength == hitLength, &dimensions);
|
|
width = dimensions.width;
|
|
}
|
|
else
|
|
{
|
|
PRInt32 totalLength = 0; // length up to the last-in-flow frame
|
|
nsCOMPtr<nsITextContent> tc(do_QueryInterface(mContent));
|
|
if (tc) {
|
|
totalLength = tc->Text()->GetLength(); // raw value which includes whitespace
|
|
}
|
|
if ((hitLength == textLength) && (inOffset = mContentLength) &&
|
|
(mContentOffset + mContentLength == totalLength)) {
|
|
// no need to re-measure when at the end of the last-in-flow
|
|
}
|
|
else
|
|
inRendContext->GetWidth(paintBuffer.mBuffer, hitLength, width);
|
|
}
|
|
if ((hitLength == textLength) && (TEXT_TRIMMED_WS & mState)) {
|
|
//
|
|
// Offset must be after a space that has
|
|
// been trimmed off the end of the frame.
|
|
// Add the width of the trimmed space back
|
|
// to the total width, so the caret appears
|
|
// in the proper place!
|
|
//
|
|
// NOTE: the trailing whitespace includes the word and letter spacing!!
|
|
width += ts.mSpaceWidth + ts.mWordSpacing + ts.mLetterSpacing;
|
|
}
|
|
}
|
|
#ifdef IBMBIDI
|
|
if (NS_GET_EMBEDDING_LEVEL(this) & 1) {
|
|
if (width > mRect.width)
|
|
outPoint->x = 0;
|
|
else
|
|
outPoint->x = mRect.width - width;
|
|
}
|
|
else
|
|
#endif // IBMBIDI
|
|
//XXX callers need to safeguard themselves against empty frames, I noted that
|
|
//the caret can be locked when leftarrow'ing in: <span>...</span>\n<br>line
|
|
if (width > mRect.width)
|
|
outPoint->x = mRect.width;
|
|
else
|
|
outPoint->x = width;
|
|
outPoint->y = 0;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetChildFrameContainingOffset(PRInt32 inContentOffset,
|
|
PRBool inHint,
|
|
PRInt32* outFrameContentOffset,
|
|
nsIFrame **outChildFrame)
|
|
{
|
|
if (nsnull == outChildFrame)
|
|
return NS_ERROR_NULL_POINTER;
|
|
PRInt32 contentOffset = inContentOffset;
|
|
|
|
if (contentOffset != -1) //-1 signified the end of the current content
|
|
contentOffset = inContentOffset - mContentOffset;
|
|
|
|
if ((contentOffset > mContentLength) || ((contentOffset == mContentLength) && inHint) )
|
|
{
|
|
//this is not the frame we are looking for.
|
|
nsIFrame* nextInFlow = GetNextInFlow();
|
|
if (nextInFlow)
|
|
{
|
|
return nextInFlow->GetChildFrameContainingOffset(inContentOffset, inHint, outFrameContentOffset, outChildFrame);
|
|
}
|
|
else {
|
|
#ifdef IBMBIDI // Simon
|
|
// There is no nextInFlow - check if there is a bidi
|
|
// continuation frame
|
|
if (mState & NS_FRAME_IS_BIDI)
|
|
{
|
|
nsIFrame *nextBidi = GetNextSibling();
|
|
if (nextBidi)
|
|
{
|
|
PRInt32 start, end;
|
|
if (NS_SUCCEEDED(nextBidi->GetOffsets(start, end)) && start > 0)
|
|
{
|
|
return nextBidi->GetChildFrameContainingOffset(inContentOffset,
|
|
inHint, outFrameContentOffset, outChildFrame);
|
|
}
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
{
|
|
if (contentOffset != mContentLength) //that condition was only for when there is a choice
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (inContentOffset < mContentOffset) //could happen with floats!
|
|
{
|
|
*outChildFrame = GetPrevInFlow();
|
|
if (*outChildFrame)
|
|
return (*outChildFrame)->GetChildFrameContainingOffset(inContentOffset, inHint,
|
|
outFrameContentOffset,outChildFrame);
|
|
else
|
|
return NS_OK; //this can't be the right thing to do?
|
|
}
|
|
|
|
*outFrameContentOffset = contentOffset;
|
|
*outChildFrame = this;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::PeekOffset(nsPresContext* aPresContext, nsPeekOffsetStruct *aPos)
|
|
{
|
|
DEBUG_VERIFY_NOT_DIRTY(mState);
|
|
if (mState & NS_FRAME_IS_DIRTY)
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
#ifdef IBMBIDI
|
|
// XXX TODO: - this explanation may not be accurate
|
|
// - need to better explain what aPos->mPreferLeft means
|
|
// for two frames on the same line
|
|
// - need to better explain for what happens when you move
|
|
// from the end of a line to the beginning of the next
|
|
// despite not making a move logically within the text.
|
|
// - need to explain why XORing with the embedding level
|
|
// achieves the desired effect
|
|
//
|
|
// When you move your caret by in some visual direction, and you find the
|
|
// new position is at the edge of a line (beginning or end), you usually
|
|
// want to stay on the current line rather than move to the next or the
|
|
// previous one; however, if you want to get to the edge of the next or
|
|
// the previous word (i.e. you're 'eating white space' when moving
|
|
// between words), and you couldn't find the word in the current line,
|
|
// you do _not_ want to stay on the current line - you want to get to that
|
|
// word.
|
|
//
|
|
// When your frames are ordered the same way logically as they are
|
|
// visually (e.g. when they're frames of LTR text displayed in
|
|
// left-then-down order), this translates to terms of 'prefer left' or
|
|
// 'prefer right', i.e. if you move to the left and hit the beginning of
|
|
// the line you have to choose between the frame "on the left" - the last
|
|
// frame on the previous line - and the frame "on the right" - the
|
|
// first frame of the current line.
|
|
//
|
|
// When the frames are displayed in right-then-down order (i.e. frames
|
|
// within an RTL line), the last sentence remains correct, but now
|
|
// the directions are reversed - if you're moving left, you hit the end
|
|
// of a line; the frame closer to your original position is the one
|
|
// "on the right" - the last frame on the current line - rather than the
|
|
// one "on the left" - the first frame on the next
|
|
// line.
|
|
//
|
|
// Now, it seems the PeekOffset() method does not _use_ the mPreferLeft
|
|
// value, but it does _set_ it for the caller, and this must be done
|
|
// consistently along calls to PeekOffset of nsTextFrames on the _same_
|
|
// line as well as on different lines.
|
|
//
|
|
// Note:
|
|
// eDirPrevious actually means 'in the visual left-then-down direction'
|
|
// eDirNext actually means 'in the visual right-then-down direction'
|
|
// (this is again due to the LTRish bias of the nomenclature)
|
|
|
|
PRBool isOddLevel = NS_GET_EMBEDDING_LEVEL(this) & 1;
|
|
|
|
if ((eSelectCharacter == aPos->mAmount)
|
|
|| (eSelectWord == aPos->mAmount))
|
|
// this 'flip' will be in effect only for this frame, not
|
|
// for recursive calls to PeekOffset()
|
|
aPos->mPreferLeft ^= isOddLevel;
|
|
#endif
|
|
|
|
if (!aPos || !mContent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
// XXX TODO: explain this policy; why the assymetry between
|
|
// too high and too low start offsets?
|
|
//
|
|
// There are 4 possible ranges of aPos->mStartOffset:
|
|
//
|
|
// 0 mContentOffset mContentOffset+mContentLength
|
|
// | | |
|
|
// range #1 | range #2 | range #3 | range #4
|
|
// ***************
|
|
// our frame's part
|
|
// of the content
|
|
//
|
|
// Range Policy
|
|
// ------------------------------------------------------------------------
|
|
// #1 Assume the start position is at the end of the content of 'this'
|
|
// #2 Round up the position to the beginning of our frame
|
|
// #3 No change necessary
|
|
// #4 Delegate the PeekOffset() to the next frame (according
|
|
// to the direction, either to our left or our right)
|
|
//
|
|
// Note: the diagram above is drawn left-to-right, but advancing
|
|
// in the content may sometimes mean going right-to-left
|
|
|
|
if (aPos->mStartOffset < 0 )
|
|
aPos->mStartOffset = mContentLength + mContentOffset;
|
|
if (aPos->mStartOffset < mContentOffset){
|
|
aPos->mStartOffset = mContentOffset;
|
|
}
|
|
if (aPos->mStartOffset > (mContentOffset + mContentLength)){
|
|
nsIFrame *nextInFlow;
|
|
#ifdef IBMBIDI
|
|
if (isOddLevel) {
|
|
nextInFlow = NS_STATIC_CAST(nsIFrame*,
|
|
aPresContext->PropertyTable()->GetProperty(this,
|
|
nsLayoutAtoms::nextBidi));
|
|
}
|
|
else
|
|
#endif
|
|
nextInFlow = GetNextInFlow();
|
|
if (!nextInFlow){
|
|
NS_ASSERTION(PR_FALSE,"nsTextFrame::PeekOffset no more flow \n");
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
// undoing the RTL flipping of mPreferLeft for the delegation
|
|
// to the next frame
|
|
if ((eSelectCharacter == aPos->mAmount)
|
|
|| (eSelectWord == aPos->mAmount))
|
|
aPos->mPreferLeft ^= isOddLevel;
|
|
return nextInFlow->PeekOffset(aPresContext, aPos);
|
|
}
|
|
|
|
// XXX TODO: explain the following:
|
|
// - if this frame is the first of the last in the line according
|
|
// to the content indices, why not handle the cases of
|
|
// eSelectBeginLine/eSelectEndLine
|
|
// - why can't we make the hand-off to the parent class' method
|
|
// before the of aPos->mStartOffset and aPos->mPreferLeft?
|
|
|
|
if (aPos->mAmount == eSelectLine || aPos->mAmount == eSelectBeginLine
|
|
|| aPos->mAmount == eSelectEndLine || aPos->mAmount == eSelectParagraph)
|
|
{
|
|
return nsFrame::PeekOffset(aPresContext, aPos);
|
|
}
|
|
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
nsresult rv = indexBuffer.GrowTo(mContentLength + 1);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
|
|
PRInt32 textLength;
|
|
nsresult result(NS_ERROR_FAILURE);
|
|
aPos->mResultContent = mContent;//do this right off
|
|
switch (aPos->mAmount){
|
|
case eSelectNoAmount:
|
|
{
|
|
// Transform text from content into renderable form
|
|
nsIDocument* doc = mContent->GetDocument();
|
|
if (!doc) {
|
|
return NS_OK;
|
|
}
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aPresContext);
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
if (textLength)//if no renderable length, you cant park here.
|
|
{
|
|
aPos->mContentOffset = aPos->mStartOffset;
|
|
result = NS_OK;
|
|
}
|
|
else
|
|
{
|
|
aPos->mAmount = eSelectDir;//go to "next" or previous frame based on direction not THIS frame
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
if (NS_SUCCEEDED(result) && aPos->mResultFrame && aPos->mResultFrame!= this)
|
|
return aPos->mResultFrame->PeekOffset(aPresContext, aPos);
|
|
else if (NS_FAILED(result))
|
|
return result;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eSelectCharacter:
|
|
{
|
|
// Transform text from content into renderable form
|
|
nsIDocument* doc = mContent->GetDocument();
|
|
if (!doc) {
|
|
return NS_OK;
|
|
}
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aPresContext);
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
nsIFrame *frameUsed = nsnull;
|
|
PRInt32 start;
|
|
PRBool found = PR_TRUE;
|
|
|
|
PRBool selectable;
|
|
PRUint8 selectStyle;
|
|
|
|
IsSelectable(&selectable, &selectStyle);
|
|
if ( selectStyle == NS_STYLE_USER_SELECT_ALL )
|
|
found = PR_FALSE;
|
|
else
|
|
{
|
|
|
|
#ifdef IBMBIDI // Simon - RTL frames reverse meaning of previous and next
|
|
// so that right arrow always moves to the right on screen
|
|
// and left arrow always moves left
|
|
if ( ((aPos->mDirection == eDirPrevious) && !isOddLevel) ||
|
|
((aPos->mDirection == eDirNext) && isOddLevel) ){
|
|
#else
|
|
if (aPos->mDirection == eDirPrevious){
|
|
#endif
|
|
aPos->mContentOffset = 0;
|
|
PRInt32 i;
|
|
|
|
nsAutoPRUint8Buffer clusterBuffer;
|
|
rv = FillClusterBuffer(aPresContext, paintBuffer.mBuffer,
|
|
(PRUint32)textLength, clusterBuffer);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
for (i = aPos->mStartOffset -1 - mContentOffset; i >=0; i--){
|
|
if ((ip[i] < ip[aPos->mStartOffset - mContentOffset]) &&
|
|
(clusterBuffer.mBuffer[ip[i] - mContentOffset]) &&
|
|
(! IS_LOW_SURROGATE(paintBuffer.mBuffer[ip[i]-mContentOffset])))
|
|
{
|
|
aPos->mContentOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef SUNCTL
|
|
static NS_DEFINE_CID(kLECID, NS_ULE_CID);
|
|
|
|
nsCOMPtr<nsILE> ctlObj;
|
|
ctlObj = do_CreateInstance(kLECID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cell based cursor movement will not be supported\n");
|
|
ctlObj = nsnull;
|
|
}
|
|
else {
|
|
PRBool needsCTL = PR_FALSE;
|
|
PRInt32 previousOffset;
|
|
|
|
ctlObj->NeedsCTLFix(NS_REINTERPRET_CAST(const PRUnichar*,
|
|
paintBuffer.mBuffer),
|
|
aPos->mStartOffset, -1, &needsCTL);
|
|
|
|
if (needsCTL) {
|
|
ctlObj->PrevCluster(NS_REINTERPRET_CAST(const PRUnichar*,
|
|
paintBuffer.mBuffer),
|
|
textLength,aPos->mStartOffset,
|
|
&previousOffset);
|
|
aPos->mContentOffset = i = previousOffset;
|
|
}
|
|
}
|
|
#endif /* SUNCTL */
|
|
|
|
if (i <0){
|
|
found = PR_FALSE;
|
|
frameUsed = GetPrevInFlow();
|
|
start = mContentOffset;
|
|
aPos->mContentOffset = start;//in case next call fails we stop at this offset
|
|
}
|
|
}
|
|
#ifdef IBMBIDI // Simon, as above
|
|
else if ( ((aPos->mDirection == eDirNext) && !isOddLevel) ||
|
|
((aPos->mDirection == eDirPrevious) && isOddLevel) ){
|
|
#else
|
|
else if (aPos->mDirection == eDirNext){
|
|
#endif
|
|
PRInt32 i;
|
|
aPos->mContentOffset = mContentLength;
|
|
|
|
nsAutoPRUint8Buffer clusterBuffer;
|
|
rv = FillClusterBuffer(aPresContext, paintBuffer.mBuffer,
|
|
(PRUint32)textLength, clusterBuffer);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
for (i = aPos->mStartOffset - mContentOffset; i <= mContentLength; i++) {
|
|
if ((ip[i] > ip[aPos->mStartOffset - mContentOffset]) &&
|
|
((i == mContentLength) ||
|
|
(!IS_LOW_SURROGATE(paintBuffer.mBuffer[ip[i] - mContentOffset])) &&
|
|
(clusterBuffer.mBuffer[ip[i] - mContentOffset]))) {
|
|
aPos->mContentOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef SUNCTL
|
|
static NS_DEFINE_CID(kLECID, NS_ULE_CID);
|
|
|
|
nsCOMPtr<nsILE> ctlObj;
|
|
ctlObj = do_CreateInstance(kLECID, &rv);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("Cell based cursor movement will not be supported\n");
|
|
ctlObj = nsnull;
|
|
}
|
|
else {
|
|
PRBool needsCTL = PR_FALSE;
|
|
PRInt32 nextOffset;
|
|
|
|
ctlObj->NeedsCTLFix(NS_REINTERPRET_CAST(const PRUnichar*,
|
|
paintBuffer.mBuffer),
|
|
aPos->mStartOffset, 0, &needsCTL);
|
|
|
|
if (needsCTL) {
|
|
|
|
ctlObj->NextCluster(NS_REINTERPRET_CAST(const PRUnichar*,
|
|
paintBuffer.mBuffer),
|
|
textLength, aPos->mStartOffset,
|
|
&nextOffset);
|
|
aPos->mContentOffset = i = nextOffset;
|
|
}
|
|
}
|
|
#endif /* SUNCTL */
|
|
|
|
/* if (aStartOffset == 0 && (mState & TEXT_SKIP_LEADING_WS))
|
|
i--; //back up because we just skipped over some white space. why skip over the char also?
|
|
*/
|
|
if (i > mContentLength){
|
|
found = PR_FALSE;
|
|
// XXX TODO: explain why in this case GetNextInFlow() is good enough,
|
|
// but in the case of
|
|
// aPos->mStartOffset > (mContentOffset + mContentLength)
|
|
// above, we use the presentation context and get the 'nextBidi'
|
|
frameUsed = GetNextInFlow();
|
|
start = mContentOffset + mContentLength;
|
|
aPos->mContentOffset = start;//in case next call fails we stop at this offset
|
|
}
|
|
}
|
|
}
|
|
if (!found)
|
|
{
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
if (NS_SUCCEEDED(result) && aPos->mResultFrame && aPos->mResultFrame!= this)
|
|
{
|
|
// undoing the RTL flipping of mPreferLeft in the case where
|
|
// the inner call will do it itself;
|
|
// note that mAmount, as well as mPreferLeft might have been modified
|
|
// by the call to GetFrameFromDirection (if we are moving to another line)
|
|
if (eSelectCharacter == aPos->mAmount)
|
|
aPos->mPreferLeft ^= isOddLevel;
|
|
result = aPos->mResultFrame->PeekOffset(aPresContext, aPos);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
}
|
|
}
|
|
else
|
|
aPos->mResultContent = mContent;
|
|
}
|
|
break;
|
|
|
|
case eSelectWord:
|
|
{
|
|
// Transform text from content into renderable form
|
|
nsIDocument* doc = mContent->GetDocument();
|
|
if (!doc) {
|
|
return result;
|
|
}
|
|
|
|
nsTextTransformer tx(doc->GetLineBreaker(),
|
|
doc->GetWordBreaker(), aPresContext);
|
|
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
nsIFrame *frameUsed = nsnull;
|
|
PRBool keepSearching; //if you run out of chars before you hit the end of word, maybe next frame has more text to select?
|
|
PRInt32 start;
|
|
PRBool found = PR_FALSE;
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
PRBool wordSelectEatSpaceAfter = tx.GetWordSelectEatSpaceAfter();
|
|
|
|
PRBool selectable;
|
|
PRUint8 selectStyle;
|
|
IsSelectable(&selectable, &selectStyle);
|
|
if ( selectStyle == NS_STYLE_USER_SELECT_ALL )
|
|
found = PR_FALSE;
|
|
else
|
|
{
|
|
|
|
#ifdef IBMBIDI // Simon - RTL frames reverse meaning of previous and next
|
|
// so that right arrow always moves to the right on screen
|
|
// and left arrow always moves left
|
|
if ( ((aPos->mDirection == eDirPrevious) && !isOddLevel) ||
|
|
((aPos->mDirection == eDirNext) && isOddLevel) ) {
|
|
#else
|
|
if (aPos->mDirection == eDirPrevious){
|
|
#endif
|
|
keepSearching = PR_TRUE;
|
|
tx.Init(this, mContent, aPos->mStartOffset);
|
|
aPos->mContentOffset = mContentOffset;//initialize
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI) ? mContentOffset : -1;
|
|
#endif // IBMBIDI
|
|
if (tx.GetPrevWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace,
|
|
PR_FALSE, aPos->mIsKeyboardSelect) &&
|
|
(aPos->mStartOffset - contentLen >= mContentOffset) ){
|
|
if ((aPos->mEatingWS && !isWhitespace) || !aPos->mEatingWS){
|
|
aPos->mContentOffset = aPos->mStartOffset - contentLen;
|
|
//check for whitespace next.
|
|
if (isWhitespace && aPos->mContentOffset <= mContentOffset)
|
|
{
|
|
keepSearching = PR_FALSE;//reached the beginning of a word
|
|
aPos->mEatingWS = PR_FALSE;//if no real word then
|
|
}
|
|
else{
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI) ? mContentOffset : -1;
|
|
#endif // IBMBIDI
|
|
while (isWhitespace &&
|
|
tx.GetPrevWord(PR_FALSE, &wordLen, &contentLen,
|
|
&isWhitespace, PR_FALSE,
|
|
aPos->mIsKeyboardSelect)){
|
|
aPos->mContentOffset -= contentLen;
|
|
aPos->mEatingWS = PR_TRUE;
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI) ? mContentOffset : -1;
|
|
#endif // IBMBIDI
|
|
}
|
|
aPos->mEatingWS = !isWhitespace;//nowhite space, just eat chars.
|
|
keepSearching = aPos->mContentOffset <= mContentOffset;
|
|
if (!isWhitespace){
|
|
if (!keepSearching)
|
|
found = PR_TRUE;
|
|
else
|
|
aPos->mEatingWS = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
aPos->mContentOffset = mContentLength + mContentOffset;
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
#ifdef IBMBIDI // Simon, as above
|
|
else if ( ((aPos->mDirection == eDirNext) && !isOddLevel) ||
|
|
((aPos->mDirection == eDirPrevious) && isOddLevel) ) {
|
|
#else
|
|
else if (aPos->mDirection == eDirNext) {
|
|
#endif
|
|
tx.Init(this, mContent, aPos->mStartOffset );
|
|
aPos->mContentOffset = mContentOffset + mContentLength;//initialize
|
|
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI) ? mContentOffset + mContentLength : -1;
|
|
#endif // IBMBIDI
|
|
if (tx.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed, PR_TRUE, PR_FALSE, aPos->mIsKeyboardSelect) &&
|
|
(aPos->mStartOffset + contentLen <= (mContentLength + mContentOffset))){
|
|
|
|
// On some platforms (mac, unix), we want the selection to end
|
|
// at the end of the word (not the beginning of the next one).
|
|
if ((wordSelectEatSpaceAfter ? isWhitespace : !isWhitespace) || !aPos->mEatingWS) {
|
|
aPos->mContentOffset = aPos->mStartOffset + contentLen;
|
|
keepSearching = PR_TRUE;
|
|
if (wordSelectEatSpaceAfter ? isWhitespace : !isWhitespace)
|
|
aPos->mEatingWS = PR_TRUE;
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI)
|
|
? mContentOffset + mContentLength : -1;
|
|
#endif // IBMBIDI
|
|
while (tx.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed, PR_TRUE, PR_FALSE, aPos->mIsKeyboardSelect))
|
|
{
|
|
if (wordSelectEatSpaceAfter ? !isWhitespace : aPos->mEatingWS)
|
|
break;
|
|
if (aPos->mStartOffset + contentLen >= (mContentLength + mContentOffset))
|
|
goto TryNextFrame;
|
|
if (wordSelectEatSpaceAfter ? isWhitespace : !isWhitespace)
|
|
aPos->mEatingWS = PR_TRUE;
|
|
aPos->mContentOffset += contentLen;
|
|
#ifdef IBMBIDI
|
|
wordLen = (mState & NS_FRAME_IS_BIDI)
|
|
? mContentOffset + mContentLength : -1;
|
|
#endif // IBMBIDI
|
|
}
|
|
keepSearching = (mContentOffset + mContentLength) <= aPos->mContentOffset;
|
|
if (!keepSearching)
|
|
found = PR_TRUE;
|
|
}
|
|
else
|
|
{
|
|
aPos->mContentOffset = mContentOffset;
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
TryNextFrame:
|
|
// XXX TODO: explain why in this case GetNextInFlow() is good enough,
|
|
// but in the case of
|
|
// aPos->mStartOffset > (mContentOffset + mContentLength)
|
|
// above, we use the presentation context and get the 'nextBidi'
|
|
frameUsed = GetNextInFlow();
|
|
start = 0;
|
|
}
|
|
}
|
|
if (!found ||
|
|
(aPos->mContentOffset > (mContentOffset + mContentLength)) ||
|
|
(aPos->mContentOffset < mContentOffset))
|
|
{
|
|
aPos->mContentOffset = PR_MIN(aPos->mContentOffset, mContentOffset + mContentLength);
|
|
aPos->mContentOffset = PR_MAX(aPos->mContentOffset, mContentOffset);
|
|
if (wordSelectEatSpaceAfter && aPos->mDirection == eDirNext && aPos->mEatingWS) {
|
|
//If we want to stop at beginning of the next word
|
|
//GetFrameFromDirction should not return NS_ERROR_FAILURE at end of line
|
|
aPos->mEatingWS = PR_FALSE;
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
aPos->mEatingWS = PR_TRUE;
|
|
}
|
|
else
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
if (NS_SUCCEEDED(result) && aPos->mResultFrame && aPos->mResultFrame!= this)
|
|
{
|
|
// undoing the RTL flipping of mPreferLeft in the case where
|
|
// the inner call will do it itself;
|
|
// note that mAmount, as well as mPreferLeft might have been modified
|
|
// by the call to GetFrameFromDirection (if we are moving to another line)
|
|
if (eSelectWord == aPos->mAmount)
|
|
aPos->mPreferLeft ^= isOddLevel;
|
|
if (NS_SUCCEEDED(result = aPos->mResultFrame->PeekOffset(aPresContext, aPos)))
|
|
return NS_OK;//else fall through
|
|
else if (aPos->mDirection == eDirNext)
|
|
aPos->mContentOffset = mContentOffset + mContentLength;
|
|
else
|
|
aPos->mContentOffset = mContentOffset;
|
|
}
|
|
else
|
|
aPos->mResultContent = mContent;
|
|
}
|
|
else
|
|
{
|
|
aPos->mResultContent = mContent;
|
|
}
|
|
}
|
|
break;
|
|
|
|
#ifdef IBMBIDI
|
|
case eSelectDir:
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
if (NS_SUCCEEDED(result) && aPos->mResultFrame && aPos->mResultFrame!= this)
|
|
return aPos->mResultFrame->PeekOffset(aPresContext, aPos);
|
|
else {
|
|
return result;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
result = NS_ERROR_FAILURE; break;
|
|
}
|
|
|
|
aPos->mContentOffsetEnd = aPos->mContentOffset;
|
|
|
|
if (NS_FAILED(result)){
|
|
aPos->mResultContent = mContent;
|
|
//aPos->mContentOffset = aPos->mStartOffset;
|
|
result = NS_OK;
|
|
}
|
|
aPos->mResultFrame = this;
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::HandleMultiplePress(nsPresContext* aPresContext,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
if (DisplaySelection(aPresContext) == nsISelectionController::SELECTION_OFF) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsMouseEvent *me = (nsMouseEvent *)aEvent;
|
|
if (!me) return NS_OK;
|
|
|
|
// Triple- and greater click counts are handled by nsFrame.
|
|
if (me->clickCount > 2)
|
|
return nsFrame::HandleMultiplePress(aPresContext, aEvent, aEventStatus);
|
|
|
|
// Double-click: word selection, handled here:
|
|
PRInt32 startPos = 0;
|
|
PRInt32 contentOffsetEnd = 0;
|
|
nsCOMPtr<nsIContent> newContent;
|
|
nsresult rv = GetPosition(aPresContext, aEvent->point,
|
|
getter_AddRefs(newContent), startPos,
|
|
contentOffsetEnd);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
return PeekBackwardAndForward(eSelectWord, eSelectWord, startPos,
|
|
aPresContext, PR_FALSE);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::CheckVisibility(nsPresContext* aContext, PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aRecurse, PRBool *aFinished, PRBool *_retval)
|
|
{
|
|
if (!aFinished || !_retval)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (*aFinished)
|
|
return NS_ERROR_FAILURE; //dont call with finished != false
|
|
if (mContentOffset > aEndIndex)
|
|
return NS_OK; //reached the end
|
|
if (mContentOffset > aStartIndex)
|
|
aStartIndex = mContentOffset;
|
|
if (aStartIndex >= aEndIndex) //how can it be greater?? check anyway
|
|
return NS_OK; //reached the end.
|
|
|
|
nsresult rv ;
|
|
if (aStartIndex < (mContentOffset + mContentLength))
|
|
{
|
|
//get the presshell
|
|
nsIPresShell *shell = aContext->GetPresShell();
|
|
if (!shell)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//get the document
|
|
nsIDocument *doc = shell->GetDocument();
|
|
if (!doc)
|
|
return NS_ERROR_FAILURE;
|
|
//create texttransformer
|
|
nsTextTransformer tx(doc->GetLineBreaker(), nsnull, aContext);
|
|
//create the buffers
|
|
nsAutoTextBuffer paintBuffer;
|
|
nsAutoIndexBuffer indexBuffer;
|
|
if (NS_FAILED(indexBuffer.GrowTo(mContentLength + 1)))
|
|
return NS_ERROR_FAILURE;//bail out
|
|
|
|
PRInt32 textLength;
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
if (textLength)//we have something to measure?
|
|
{
|
|
PRInt32 start = PR_MAX(aStartIndex,mContentOffset);
|
|
PRInt32 end = PR_MIN(mContentOffset + mContentLength-1, aEndIndex); //base 0 index of array
|
|
while (start != end)
|
|
{
|
|
if (indexBuffer.mBuffer[start] < indexBuffer.mBuffer[start+1]) //we have a rendered char!
|
|
{
|
|
*aFinished = PR_TRUE;//we are done bubble out.
|
|
*_retval = PR_TRUE;//hit a drawn char
|
|
return NS_OK;
|
|
}
|
|
start++;
|
|
}
|
|
if (start == aEndIndex)
|
|
{
|
|
*aFinished = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
if (aRecurse) //recurse through the siblings.
|
|
{
|
|
nsIFrame *nextInFlow = this;
|
|
rv = NS_OK;
|
|
while (!aFinished && nextInFlow && NS_SUCCEEDED(rv) && !*_retval) //while we havent found anything visible
|
|
{
|
|
nextInFlow = nextInFlow->GetNextInFlow();
|
|
if (nextInFlow)
|
|
{
|
|
rv = nextInFlow->CheckVisibility(aContext,aStartIndex,aEndIndex,PR_FALSE,aFinished,_retval);
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetOffsets(PRInt32 &start, PRInt32 &end) const
|
|
{
|
|
start = mContentOffset;
|
|
end = mContentOffset+mContentLength;
|
|
return NS_OK;
|
|
}
|
|
|
|
#define TEXT_MAX_NUM_SEGMENTS 65
|
|
|
|
struct SegmentData {
|
|
PRUint32 mIsWhitespace : 1;
|
|
PRUint32 mContentLen : 31; // content length
|
|
|
|
PRBool IsWhitespace() {return PRBool(mIsWhitespace);}
|
|
|
|
// Get the content length. This is a running total of all
|
|
// the previous segments as well
|
|
PRInt32 ContentLen() {return PRInt32(mContentLen);}
|
|
};
|
|
|
|
struct TextRun {
|
|
// Total number of characters and the accumulated content length
|
|
PRInt32 mTotalNumChars, mTotalContentLen;
|
|
|
|
// Words and whitespace each count as a segment
|
|
PRInt32 mNumSegments;
|
|
|
|
// Possible break points specified as offsets into the buffer
|
|
PRInt32 mBreaks[TEXT_MAX_NUM_SEGMENTS];
|
|
|
|
// Per segment data
|
|
SegmentData mSegments[TEXT_MAX_NUM_SEGMENTS];
|
|
|
|
TextRun()
|
|
{
|
|
Reset();
|
|
}
|
|
|
|
void Reset()
|
|
{
|
|
mNumSegments = 0;
|
|
mTotalNumChars = 0;
|
|
mTotalContentLen = 0;
|
|
}
|
|
|
|
// Returns PR_TRUE if we're currently buffering text
|
|
PRBool IsBuffering()
|
|
{
|
|
return mNumSegments > 0;
|
|
}
|
|
|
|
void AddSegment(PRInt32 aNumChars, PRInt32 aContentLen, PRBool aIsWhitespace)
|
|
{
|
|
NS_PRECONDITION(mNumSegments < TEXT_MAX_NUM_SEGMENTS, "segment overflow");
|
|
#ifdef IBMBIDI
|
|
if (mNumSegments >= TEXT_MAX_NUM_SEGMENTS) {
|
|
return;
|
|
}
|
|
#endif // IBMBIDI
|
|
mTotalNumChars += aNumChars;
|
|
mBreaks[mNumSegments] = mTotalNumChars;
|
|
mSegments[mNumSegments].mIsWhitespace = aIsWhitespace;
|
|
mTotalContentLen += aContentLen;
|
|
mSegments[mNumSegments].mContentLen = PRUint32(mTotalContentLen);
|
|
mNumSegments++;
|
|
}
|
|
};
|
|
|
|
// Transforms characters in place from ascii to Unicode
|
|
static void
|
|
TransformTextToUnicode(char* aText, PRInt32 aNumChars)
|
|
{
|
|
// Go backwards over the characters and convert them.
|
|
unsigned char* cp1 = (unsigned char*)aText + aNumChars - 1;
|
|
PRUnichar* cp2 = (PRUnichar*)aText + (aNumChars - 1);
|
|
|
|
while (aNumChars-- > 0) {
|
|
// XXX: If you crash here then you may see the issue described
|
|
// in http://bugzilla.mozilla.org/show_bug.cgi?id=36146#c44
|
|
*cp2-- = PRUnichar(*cp1--);
|
|
}
|
|
}
|
|
|
|
PRUint32
|
|
nsTextFrame::EstimateNumChars(PRUint32 aAvailableWidth,
|
|
PRUint32 aAverageCharWidth)
|
|
{
|
|
// Estimate the number of characters that will fit. Use 105% of the available
|
|
// width divided by the average character width.
|
|
// If mAveCharWidth is zero, we can fit the entire line.
|
|
if (aAverageCharWidth == 0) {
|
|
return PR_UINT32_MAX;
|
|
}
|
|
|
|
PRUint32 estimatedNumChars = aAvailableWidth / aAverageCharWidth;
|
|
return estimatedNumChars + estimatedNumChars / 20;
|
|
}
|
|
|
|
// Replaced by precompiled CCMap (see bug 180266). To update the list
|
|
// of characters, see one of files included below. As for the way
|
|
// the original list of characters was obtained by Frank Tang, see bug 54467.
|
|
// Updated to fix the regression (bug 263411). The list contains
|
|
// characters of the following Unicode character classes : Ps, Pi, Po, Pf, Pe.
|
|
// (ref.: http://www.w3.org/TR/2004/CR-CSS21-20040225/selector.html#first-letter)
|
|
// Note that the file does NOT yet include non-BMP characters because
|
|
// there's no point including them without fixing the way we identify
|
|
// 'first-letter' currently working only with BMP characters.
|
|
#include "punct_marks.ccmap"
|
|
DEFINE_CCMAP(gPuncCharsCCMap, const);
|
|
|
|
#define IsPunctuationMark(ch) (CCMAP_HAS_CHAR(gPuncCharsCCMap, ch))
|
|
|
|
nsReflowStatus
|
|
nsTextFrame::MeasureText(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsTextTransformer& aTx,
|
|
nsILineBreaker* aLb,
|
|
TextStyle& aTs,
|
|
TextReflowData& aTextData)
|
|
{
|
|
PRBool firstThing = PR_TRUE;
|
|
nscoord maxWidth = aReflowState.availableWidth;
|
|
nsLineLayout& lineLayout = *aReflowState.mLineLayout;
|
|
PRInt32 contentLength = aTx.GetContentLength();
|
|
PRInt32 startingOffset = aTextData.mOffset;
|
|
PRInt32 prevOffset = -1;
|
|
PRInt32 column = mColumn;
|
|
PRInt32 prevColumn = column;
|
|
nscoord prevMaxWordWidth = 0, prevAscent = 0, prevDescent = 0;
|
|
PRInt32 lastWordLen = 0;
|
|
PRUnichar* lastWordPtr = nsnull;
|
|
PRBool endsInWhitespace = PR_FALSE;
|
|
PRBool endsInNewline = PR_FALSE;
|
|
PRBool justDidFirstLetter = PR_FALSE;
|
|
nsTextDimensions dimensions, lastWordDimensions;
|
|
PRBool measureTextRuns = PR_FALSE;
|
|
|
|
if (contentLength == 0) {
|
|
aTextData.mX = 0;
|
|
aTextData.mAscent = 0;
|
|
aTextData.mDescent = 0;
|
|
return NS_FRAME_COMPLETE;
|
|
}
|
|
#if defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS)
|
|
// see if we have implementation for GetTextDimensions()
|
|
PRUint32 hints = 0;
|
|
aReflowState.rendContext->GetHints(hints);
|
|
if (hints & NS_RENDERING_HINT_FAST_MEASURE) {
|
|
measureTextRuns = !aTextData.mComputeMaxWordWidth && !aTs.mPreformatted &&
|
|
!aTs.mSmallCaps && !aTs.mWordSpacing && !aTs.mLetterSpacing &&
|
|
aTextData.mWrapping;
|
|
}
|
|
// Don't measure text runs with letter spacing active, it doesn't work
|
|
// it also doesn't work if we are not word-wrapping (bug 42832)
|
|
#endif /* defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS)*/
|
|
TextRun textRun;
|
|
PRUint32 estimatedNumChars = EstimateNumChars(maxWidth - aTextData.mX,
|
|
aTs.mAveCharWidth);
|
|
|
|
#ifdef IBMBIDI
|
|
nsTextFrame* nextBidi = nsnull;
|
|
PRInt32 start = -1, end;
|
|
|
|
if (mState & NS_FRAME_IS_BIDI) {
|
|
nextBidi = NS_STATIC_CAST(nsTextFrame*,
|
|
aPresContext->PropertyTable()->GetProperty(this,
|
|
nsLayoutAtoms::nextBidi));
|
|
|
|
if (nextBidi) {
|
|
if (mContentLength < 1) {
|
|
mContentLength = 1;
|
|
}
|
|
nextBidi->GetOffsets(start, end);
|
|
if (start <= mContentOffset) {
|
|
nextBidi->AdjustOffsetsForBidi(mContentOffset + mContentLength, end);
|
|
}
|
|
else {
|
|
mContentLength = start - mContentOffset;
|
|
}
|
|
}
|
|
}
|
|
#endif //IBMBIDI
|
|
|
|
aTextData.mX = 0;
|
|
if (aTextData.mMeasureText) {
|
|
aTs.mNormalFont->GetMaxAscent(aTextData.mAscent);
|
|
aTs.mNormalFont->GetMaxDescent(aTextData.mDescent);
|
|
}
|
|
PRBool firstWordDone = PR_FALSE;
|
|
for (;;) {
|
|
#ifdef IBMBIDI
|
|
if (nextBidi && (mContentLength <= 0) ) {
|
|
if (textRun.IsBuffering()) {
|
|
// Measure the remaining text
|
|
goto MeasureTextRun;
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
// Get next word/whitespace from the text
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
union {
|
|
char* bp1;
|
|
PRUnichar* bp2;
|
|
};
|
|
#ifdef IBMBIDI
|
|
wordLen = start;
|
|
#endif // IBMBIDI
|
|
|
|
bp2 = aTx.GetNextWord(aTextData.mInWord, &wordLen, &contentLen, &isWhitespace,
|
|
&wasTransformed, textRun.mNumSegments == 0);
|
|
|
|
// We need to set aTextData.mCanBreakBefore to true after 1st word. But we can't set
|
|
// aTextData.mCanBreakBefore without seeing the 2nd word. That's because this frame
|
|
// may only contain part of one word, the other part is in next frame.
|
|
// we don't care if first word is whitespace, that will be addressed later.
|
|
if (!aTextData.mCanBreakBefore && !firstThing && !isWhitespace) {
|
|
firstWordDone = PR_TRUE;
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
if (nextBidi) {
|
|
mContentLength -= contentLen;
|
|
|
|
if (mContentLength < 0) {
|
|
contentLen += mContentLength;
|
|
wordLen = PR_MIN(wordLen, contentLen);
|
|
}
|
|
}
|
|
#endif // IBMBIDI
|
|
// Remember if the text was transformed
|
|
if (wasTransformed) {
|
|
mState |= TEXT_WAS_TRANSFORMED;
|
|
}
|
|
|
|
if (bp2) {
|
|
if (firstWordDone) {
|
|
// The first word has been processed, and 2nd word is seen
|
|
// we can set it be breakable here after.
|
|
aTextData.mCanBreakBefore = PR_TRUE;
|
|
}
|
|
} else {
|
|
if (textRun.IsBuffering()) {
|
|
// Measure the remaining text
|
|
goto MeasureTextRun;
|
|
}
|
|
else {
|
|
// Advance the offset in case we just consumed a bunch of
|
|
// discarded characters. Otherwise, if this is the first piece
|
|
// of content for this frame we will attempt to break-before it.
|
|
aTextData.mOffset += contentLen;
|
|
break;
|
|
}
|
|
}
|
|
|
|
lastWordLen = wordLen;
|
|
lastWordPtr = bp2;
|
|
aTextData.mInWord = PR_FALSE;
|
|
|
|
// Measure the word/whitespace
|
|
PRUnichar firstChar;
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
firstChar = *bp1;
|
|
} else {
|
|
firstChar = *bp2;
|
|
}
|
|
if (isWhitespace) {
|
|
if ('\n' == firstChar) {
|
|
// We hit a newline. Stop looping.
|
|
NS_WARN_IF_FALSE(aTs.mPreformatted, "newline w/o ts.mPreformatted");
|
|
prevOffset = aTextData.mOffset;
|
|
aTextData.mOffset++;
|
|
endsInWhitespace = PR_TRUE;
|
|
endsInNewline = PR_TRUE;
|
|
break;
|
|
}
|
|
if (aTextData.mSkipWhitespace) {
|
|
aTextData.mOffset += contentLen;
|
|
aTextData.mSkipWhitespace = PR_FALSE;
|
|
|
|
if (wasTransformed) {
|
|
// As long as there were no discarded characters, then don't consider
|
|
// skipped leading whitespace as being transformed
|
|
if (wordLen == contentLen) {
|
|
mState &= ~TEXT_WAS_TRANSFORMED;
|
|
}
|
|
}
|
|
|
|
// Only set flag when we actually do skip whitespace
|
|
mState |= TEXT_SKIP_LEADING_WS;
|
|
continue;
|
|
}
|
|
firstThing = PR_FALSE;
|
|
|
|
// NOTE: Even if the textRun absorbs the whitespace below, we still
|
|
// want to remember that we're breakable.
|
|
aTextData.mCanBreakBefore = PR_TRUE;
|
|
aTextData.mFirstLetterOK = PR_FALSE;
|
|
|
|
if ('\t' == firstChar) {
|
|
// Expand tabs to the proper width
|
|
wordLen = 8 - (7 & column);
|
|
// Apply word spacing to every space derived from a tab
|
|
dimensions.width = (aTs.mSpaceWidth + aTs.mWordSpacing + aTs.mLetterSpacing)*wordLen;
|
|
|
|
// Because we have to expand the tab when rendering consider that
|
|
// a transformation of the text
|
|
mState |= TEXT_WAS_TRANSFORMED;
|
|
}
|
|
else if (textRun.IsBuffering()) {
|
|
// Add a whitespace segment
|
|
textRun.AddSegment(wordLen, contentLen, PR_TRUE);
|
|
continue;
|
|
}
|
|
else {
|
|
// Apply word spacing to every space, if there's more than one
|
|
dimensions.width = wordLen*(aTs.mWordSpacing + aTs.mLetterSpacing + aTs.mSpaceWidth);// XXX simplistic
|
|
}
|
|
|
|
//Even if there is not enough space for this "space", we still put it
|
|
//here instead of next line
|
|
prevColumn = column;
|
|
column += wordLen;
|
|
endsInWhitespace = PR_TRUE;
|
|
prevOffset = aTextData.mOffset;
|
|
aTextData.mOffset += contentLen;
|
|
|
|
if (aTextData.mMeasureText) {
|
|
//if we're wrapping, then don't add the whitespace width to the
|
|
// x-offset unless the whitespace will fit within maxWidth.''
|
|
if (aTextData.mWrapping) {
|
|
if (aTextData.mX + dimensions.width <= maxWidth) {
|
|
aTextData.mX += dimensions.width;
|
|
}
|
|
else {
|
|
// since we didn't add the trailing space width, set this flag so that
|
|
// we will not trim this non-existing space
|
|
aTextData.mTrailingSpaceTrimmed = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
//if we're not wrapping, then always advance
|
|
// the x-offset regardless of maxWidth
|
|
aTextData.mX += dimensions.width;
|
|
}
|
|
} //(aTextData.mMeasureText)
|
|
}
|
|
else {
|
|
firstThing = PR_FALSE;
|
|
aTextData.mSkipWhitespace = PR_FALSE;
|
|
|
|
if (aTextData.mFirstLetterOK) {
|
|
if (IsPunctuationMark(firstChar)) {
|
|
if (contentLen > 1)
|
|
{
|
|
wordLen = 2;
|
|
contentLen = 2;
|
|
}
|
|
}
|
|
else {
|
|
wordLen = 1;
|
|
contentLen = 1;
|
|
}
|
|
justDidFirstLetter = PR_TRUE;
|
|
}
|
|
|
|
if (aTextData.mMeasureText) {
|
|
if (measureTextRuns && !justDidFirstLetter) {
|
|
// Add another word to the text run
|
|
textRun.AddSegment(wordLen, contentLen, PR_FALSE);
|
|
|
|
// See if we should measure the text
|
|
if ((textRun.mTotalNumChars >= estimatedNumChars) ||
|
|
(textRun.mNumSegments >= (TEXT_MAX_NUM_SEGMENTS - 1))) {
|
|
goto MeasureTextRun;
|
|
}
|
|
}
|
|
else {
|
|
if (aTs.mSmallCaps) {
|
|
MeasureSmallCapsText(aReflowState, aTs, bp2, wordLen, PR_FALSE, &dimensions);
|
|
}
|
|
else {
|
|
// Measure just the one word
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
aReflowState.rendContext->GetTextDimensions(bp1, wordLen, dimensions);
|
|
} else {
|
|
aReflowState.rendContext->GetTextDimensions(bp2, wordLen, dimensions);
|
|
}
|
|
#ifdef MOZ_MATHML
|
|
// If GetBoundingMetrics is available, use the exact glyph metrics
|
|
// for ::first-letter
|
|
// XXX remove the #ifdef if GetBoundingMetrics becomes mainstream
|
|
if (justDidFirstLetter) {
|
|
nsresult res;
|
|
nsBoundingMetrics bm;
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
res = aReflowState.rendContext->GetBoundingMetrics(bp1, wordLen, bm);
|
|
} else {
|
|
res = aReflowState.rendContext->GetBoundingMetrics(bp2, wordLen, bm);
|
|
}
|
|
if (NS_SUCCEEDED(res)) {
|
|
aTextData.mAscent = dimensions.ascent = bm.ascent;
|
|
aTextData.mDescent = dimensions.descent = bm.descent;
|
|
}
|
|
}
|
|
#endif
|
|
if (aTs.mLetterSpacing) {
|
|
dimensions.width += aTs.mLetterSpacing * wordLen;
|
|
}
|
|
}
|
|
lastWordDimensions = dimensions;
|
|
|
|
// See if there is room for the text
|
|
if ((0 != aTextData.mX) && aTextData.mWrapping && (aTextData.mX + dimensions.width > maxWidth)) {
|
|
// The text will not fit.
|
|
break;
|
|
}
|
|
prevMaxWordWidth = aTextData.mMaxWordWidth;
|
|
prevAscent = aTextData.mAscent;
|
|
prevDescent = aTextData.mDescent;
|
|
|
|
aTextData.mX += dimensions.width;
|
|
if (dimensions.width > aTextData.mMaxWordWidth) {
|
|
aTextData.mMaxWordWidth = dimensions.width;
|
|
}
|
|
if (aTextData.mAscent < dimensions.ascent) {
|
|
aTextData.mAscent = dimensions.ascent;
|
|
}
|
|
if (aTextData.mDescent < dimensions.descent) {
|
|
aTextData.mDescent = dimensions.descent;
|
|
}
|
|
|
|
prevColumn = column;
|
|
column += wordLen;
|
|
endsInWhitespace = PR_FALSE;
|
|
prevOffset = aTextData.mOffset;
|
|
aTextData.mOffset += contentLen;
|
|
if (justDidFirstLetter) {
|
|
// Time to stop
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// We didn't measure the text, but we need to update our state
|
|
prevColumn = column;
|
|
column += wordLen;
|
|
endsInWhitespace = PR_FALSE;
|
|
prevOffset = aTextData.mOffset;
|
|
aTextData.mOffset += contentLen;
|
|
if (justDidFirstLetter) {
|
|
// Time to stop
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
continue;
|
|
|
|
MeasureTextRun:
|
|
#if defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS)
|
|
// see if we have implementation for GetTextDimensions()
|
|
if (hints & NS_RENDERING_HINT_FAST_MEASURE) {
|
|
PRInt32 numCharsFit;
|
|
// These calls can return numCharsFit not positioned at a break in the textRun. Beware.
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
aReflowState.rendContext->GetTextDimensions((char*)aTx.GetWordBuffer(), textRun.mTotalNumChars,
|
|
maxWidth - aTextData.mX,
|
|
textRun.mBreaks, textRun.mNumSegments,
|
|
dimensions, numCharsFit, lastWordDimensions);
|
|
} else {
|
|
aReflowState.rendContext->GetTextDimensions(aTx.GetWordBuffer(), textRun.mTotalNumChars,
|
|
maxWidth - aTextData.mX,
|
|
textRun.mBreaks, textRun.mNumSegments,
|
|
dimensions, numCharsFit, lastWordDimensions);
|
|
}
|
|
// See how much of the text fit
|
|
if ((0 != aTextData.mX) && aTextData.mWrapping && (aTextData.mX + dimensions.width > maxWidth)) {
|
|
// None of the text fits
|
|
#ifdef IBMBIDI
|
|
nextBidi = nsnull;
|
|
#endif // IBMBIDI
|
|
break;
|
|
}
|
|
|
|
// Find the index of the last segment that fit
|
|
PRInt32 lastSegment;
|
|
if (numCharsFit >= textRun.mTotalNumChars) { // fast path, normal case
|
|
NS_ASSERTION(numCharsFit == textRun.mTotalNumChars, "shouldn't overshoot");
|
|
lastSegment = textRun.mNumSegments - 1;
|
|
} else {
|
|
for (lastSegment = 0; textRun.mBreaks[lastSegment] < numCharsFit; lastSegment++) ;
|
|
NS_ASSERTION(lastSegment < textRun.mNumSegments, "failed to find segment");
|
|
// now we have textRun.mBreaks[lastSegment] >= numCharsFit
|
|
/* O'Callahan XXX: This snippet together with the snippet below prevents mail from loading
|
|
Justification seems to work just fine without these changes.
|
|
We get into trouble in a case where lastSegment gets set to -1
|
|
|
|
if (textRun.mBreaks[lastSegment] > numCharsFit) {
|
|
// NOTE: this segment did not actually fit!
|
|
lastSegment--;
|
|
}
|
|
*/
|
|
}
|
|
|
|
/* O'Callahan XXX: This snippet together with the snippet above prevents mail from loading
|
|
|
|
if (lastSegment < 0) {
|
|
// no segments fit
|
|
break;
|
|
} else */
|
|
if (lastSegment == 0) {
|
|
// Only one segment fit
|
|
prevColumn = column;
|
|
prevOffset = aTextData.mOffset;
|
|
} else {
|
|
// The previous state is for the next to last word
|
|
// NOTE: The textRun data are relative to the last updated column and offset!
|
|
prevColumn = column + textRun.mBreaks[lastSegment - 1];
|
|
prevOffset = aTextData.mOffset + textRun.mSegments[lastSegment - 1].ContentLen();
|
|
}
|
|
|
|
aTextData.mX += dimensions.width;
|
|
if (aTextData.mAscent < dimensions.ascent) {
|
|
aTextData.mAscent = dimensions.ascent;
|
|
}
|
|
if (aTextData.mDescent < dimensions.descent) {
|
|
aTextData.mDescent = dimensions.descent;
|
|
}
|
|
// this is where to backup if line-breaking happens to push the last word
|
|
prevAscent = aTextData.mAscent;
|
|
prevDescent = aTextData.mDescent;
|
|
// we can now consider the last word since we know where to backup
|
|
if (aTextData.mAscent < lastWordDimensions.ascent) {
|
|
aTextData.mAscent = lastWordDimensions.ascent;
|
|
}
|
|
if (aTextData.mDescent < lastWordDimensions.descent) {
|
|
aTextData.mDescent = lastWordDimensions.descent;
|
|
}
|
|
|
|
column += numCharsFit;
|
|
aTextData.mOffset += textRun.mSegments[lastSegment].ContentLen();
|
|
endsInWhitespace = textRun.mSegments[lastSegment].IsWhitespace();
|
|
|
|
// If all the text didn't fit, then we're done
|
|
if (numCharsFit != textRun.mTotalNumChars) {
|
|
#ifdef IBMBIDI
|
|
nextBidi = nsnull;
|
|
#endif // IBMBIDI
|
|
break;
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
if (nextBidi && (mContentLength <= 0) ) {
|
|
break;
|
|
}
|
|
#endif // IBMBIDI
|
|
|
|
if (nsnull == bp2) {
|
|
// No more text so we're all finished. Advance the offset in case the last
|
|
// call to GetNextWord() discarded characters
|
|
aTextData.mOffset += contentLen;
|
|
break;
|
|
}
|
|
|
|
// Reset the number of text run segments
|
|
textRun.Reset();
|
|
|
|
// Estimate the remaining number of characters we think will fit
|
|
estimatedNumChars = EstimateNumChars(maxWidth - aTextData.mX,
|
|
aTs.mAveCharWidth);
|
|
}
|
|
#else /* defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS) */
|
|
int unused = -1;
|
|
#endif /* defined(_WIN32) || defined(XP_OS2) || defined(MOZ_X11) || defined(XP_BEOS) */
|
|
}
|
|
|
|
// If we didn't actually measure any text, then make sure it looks
|
|
// like we did
|
|
if (!aTextData.mMeasureText) {
|
|
aTextData.mAscent = mAscent;
|
|
aTextData.mDescent = mRect.height - aTextData.mAscent;
|
|
aTextData.mX = mRect.width;
|
|
if (mState & TEXT_TRIMMED_WS) {
|
|
// Add back in the width of a space since it was trimmed away last time
|
|
// NOTE: Trailing whitespace includes word and letter spacing!
|
|
aTextData.mX += aTs.mSpaceWidth + aTs.mWordSpacing + aTs.mLetterSpacing;
|
|
}
|
|
}
|
|
|
|
// Post processing logic to deal with word-breaking that spans
|
|
// multiple frames.
|
|
if (lineLayout.InWord()) {
|
|
// We are already in a word. This means a text frame prior to this
|
|
// one had a fragment of a nbword that is joined with this
|
|
// frame. It also means that the prior frame already found this
|
|
// frame and recorded it as part of the word.
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
ListTag(stdout);
|
|
printf(": in word; skipping\n");
|
|
#endif
|
|
lineLayout.ForgetWordFrame(this);
|
|
}
|
|
|
|
if (!lineLayout.InWord()) {
|
|
// There is no currently active word. This frame may contain the
|
|
// start of one.
|
|
if (endsInWhitespace) {
|
|
// Nope, this frame doesn't start a word.
|
|
lineLayout.ForgetWordFrames();
|
|
}
|
|
else if ((aTextData.mOffset == contentLength) && (prevOffset >= 0)) {
|
|
// Force breakable to false when we aren't wrapping (this
|
|
// guarantees that the combined word will stay together)
|
|
if (!aTextData.mWrapping) {
|
|
aTextData.mCanBreakBefore = PR_FALSE;
|
|
}
|
|
|
|
// This frame does start a word. However, there is no point
|
|
// messing around with it if we are already out of room. We
|
|
// always have room if we are not breakable.
|
|
if (!aTextData.mCanBreakBefore || (aTextData.mX <= maxWidth)) {
|
|
// There is room for this word fragment. It's possible that
|
|
// this word fragment is the end of the text-run. If it's not
|
|
// then we continue with the look-ahead processing.
|
|
nsIFrame* next = lineLayout.FindNextText(aPresContext, this);
|
|
if (nsnull != next) {
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
nsAutoString tmp(aTx.GetWordBuffer(), lastWordLen);
|
|
ListTag(stdout);
|
|
printf(": start='");
|
|
fputs(NS_LossyConvertUCS2toASCII(tmp).get(), stdout);
|
|
printf("' lastWordLen=%d baseWidth=%d prevOffset=%d offset=%d next=",
|
|
lastWordLen, lastWordDimensions.width, prevOffset, aTextData.mOffset);
|
|
ListTag(stdout, next);
|
|
printf("\n");
|
|
#endif
|
|
PRUnichar* pWordBuf = lastWordPtr;
|
|
PRUint32 wordBufLen = aTx.GetWordBufferLength() -
|
|
(lastWordPtr - aTx.GetWordBuffer());
|
|
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
// The text transform buffer contains ascii characters, so
|
|
// transform it to Unicode
|
|
NS_ASSERTION(wordBufLen >= PRUint32(lastWordLen), "no room to transform in place");
|
|
TransformTextToUnicode((char*)lastWordPtr, lastWordLen);
|
|
}
|
|
|
|
// Look ahead in the text-run and compute the final word
|
|
// width, taking into account any style changes and stopping
|
|
// at the first breakable point.
|
|
if (!aTextData.mMeasureText || (lastWordDimensions.width == -1)) {
|
|
// We either didn't measure any text or we measured multiple words
|
|
// at once so either way we don't know lastWordDimensions. We'll have to
|
|
// compute it now
|
|
if (prevOffset == startingOffset) {
|
|
// There's only one word, so we don't have to measure after all
|
|
lastWordDimensions.width = aTextData.mX;
|
|
}
|
|
else if (aTs.mSmallCaps) {
|
|
MeasureSmallCapsText(aReflowState, aTs, pWordBuf,
|
|
lastWordLen, PR_FALSE, &lastWordDimensions);
|
|
}
|
|
else {
|
|
aReflowState.rendContext->GetTextDimensions(pWordBuf, lastWordLen, lastWordDimensions);
|
|
if (aTs.mLetterSpacing) {
|
|
lastWordDimensions.width += aTs.mLetterSpacing * lastWordLen;
|
|
}
|
|
}
|
|
}
|
|
nsTextDimensions wordDimensions = ComputeTotalWordDimensions(aPresContext, aLb,
|
|
lineLayout,
|
|
aReflowState, next,
|
|
lastWordDimensions,
|
|
pWordBuf,
|
|
lastWordLen,
|
|
wordBufLen,
|
|
aTextData.mCanBreakBefore);
|
|
if (!aTextData.mCanBreakBefore || (aTextData.mX - lastWordDimensions.width + wordDimensions.width <= maxWidth)) {
|
|
// The fully joined word has fit. Account for the joined
|
|
// word's affect on the max-element-size here (since the
|
|
// joined word is large than it's pieces, the right effect
|
|
// will occur from the perspective of the container
|
|
// reflowing this frame)
|
|
if (wordDimensions.width > aTextData.mMaxWordWidth) {
|
|
aTextData.mMaxWordWidth = wordDimensions.width;
|
|
}
|
|
// Now that we now that we will retain the last word, we should
|
|
// account for its ascent and descent
|
|
if (aTextData.mAscent < lastWordDimensions.ascent) {
|
|
aTextData.mAscent = lastWordDimensions.ascent;
|
|
}
|
|
if (aTextData.mDescent < lastWordDimensions.descent) {
|
|
aTextData.mDescent = lastWordDimensions.descent;
|
|
}
|
|
}
|
|
else {
|
|
#ifdef NOISY_REFLOW
|
|
ListTag(stdout);
|
|
printf(": look-ahead (didn't fit) x=%d wordWidth=%d lastWordWidth=%d\n",
|
|
aTextData.mX, wordDimensions.width, lastWordDimensions.width);
|
|
#endif
|
|
// The fully joined word won't fit. We need to reduce our
|
|
// size by lastWordDimensions
|
|
aTextData.mX -= lastWordDimensions.width;
|
|
aTextData.mMaxWordWidth = prevMaxWordWidth;
|
|
aTextData.mOffset = prevOffset;
|
|
column = prevColumn;
|
|
if (aTextData.mMeasureText) {
|
|
aTextData.mAscent = prevAscent;
|
|
aTextData.mDescent = prevDescent;
|
|
}
|
|
// else {
|
|
// XXX we didn't measure the text, and so we don't know where to back up,
|
|
// we will retain our current height. However, there is a possible
|
|
// edge case that is not handled: since we just chopped the last word,
|
|
// our remaining text could have got shorter.
|
|
// }
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" x=%d maxWordWidth=%d len=%d\n", aTextData.mX, aTextData.mMaxWordWidth,
|
|
aTextData.mOffset - startingOffset);
|
|
#endif
|
|
lineLayout.ForgetWordFrames();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Inform line layout of how this piece of text ends in whitespace
|
|
// (only text objects do this). Note that if x is zero then this
|
|
// text object collapsed into nothingness which means it shouldn't
|
|
// effect the current setting of the ends-in-whitespace flag.
|
|
lineLayout.SetColumn(column);
|
|
lineLayout.SetUnderstandsWhiteSpace(PR_TRUE);
|
|
if (0 != aTextData.mX) {
|
|
lineLayout.SetEndsInWhiteSpace(endsInWhitespace);
|
|
}
|
|
if (justDidFirstLetter) {
|
|
lineLayout.SetFirstLetterFrame(this);
|
|
lineLayout.SetFirstLetterStyleOK(PR_FALSE);
|
|
mState |= TEXT_FIRST_LETTER;
|
|
}
|
|
|
|
// Return our reflow status
|
|
nsReflowStatus rs = (aTextData.mOffset == contentLength)
|
|
#ifdef IBMBIDI
|
|
|| (aTextData.mOffset == start)
|
|
#endif // IBMBIDI
|
|
? NS_FRAME_COMPLETE
|
|
: NS_FRAME_NOT_COMPLETE;
|
|
if (endsInNewline) {
|
|
rs = NS_INLINE_LINE_BREAK_AFTER(rs);
|
|
lineLayout.SetLineEndsInBR(PR_TRUE);
|
|
}
|
|
else if ((aTextData.mOffset != contentLength) && (aTextData.mOffset == startingOffset)) {
|
|
// Break-before a long-word that doesn't fit here
|
|
rs = NS_INLINE_LINE_BREAK_BEFORE();
|
|
}
|
|
|
|
return rs;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsTextFrame", aReflowState.reason);
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aStatus);
|
|
#ifdef NOISY_REFLOW
|
|
ListTag(stdout);
|
|
printf(": BeginReflow: availableSize=%d,%d\n",
|
|
aReflowState.availableWidth, aReflowState.availableHeight);
|
|
#endif
|
|
|
|
mState &= ~TEXT_IS_END_OF_LINE;
|
|
|
|
// XXX If there's no line layout, we shouldn't even have created this
|
|
// frame. This may happen if, for example, this is text inside a table
|
|
// but not inside a cell. For now, just don't reflow.
|
|
if (nsnull == aReflowState.mLineLayout) {
|
|
// XXX Add a method to aMetrics that does this; we do it several places
|
|
aMetrics.width = 0;
|
|
aMetrics.height = 0;
|
|
aMetrics.ascent = 0;
|
|
aMetrics.descent = 0;
|
|
if (aMetrics.mComputeMEW) {
|
|
aMetrics.mMaxElementWidth = 0;
|
|
}
|
|
#ifdef MOZ_MATHML
|
|
if (NS_REFLOW_CALC_BOUNDING_METRICS & aMetrics.mFlags)
|
|
aMetrics.mBoundingMetrics.Clear();
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
// Get starting offset into the content
|
|
PRInt32 startingOffset = 0;
|
|
nsIFrame* prevInFlow = GetPrevInFlow();
|
|
if (nsnull != prevInFlow) {
|
|
nsTextFrame* prev = (nsTextFrame*)prevInFlow;
|
|
startingOffset = prev->mContentOffset + prev->mContentLength;
|
|
|
|
// If our starting offset doesn't agree with mContentOffset, then our
|
|
// prev-in-flow has changed the number of characters it maps and so we
|
|
// need to measure text and not try and optimize a resize reflow
|
|
if (startingOffset != mContentOffset) {
|
|
mState &= ~TEXT_OPTIMIZE_RESIZE;
|
|
}
|
|
}
|
|
nsLineLayout& lineLayout = *aReflowState.mLineLayout;
|
|
TextStyle ts(aPresContext, *aReflowState.rendContext, mStyleContext);
|
|
|
|
if ( (mContentLength > 0) && (mState & NS_FRAME_IS_BIDI) ) {
|
|
startingOffset = mContentOffset;
|
|
}
|
|
|
|
if (aPresContext->BidiEnabled()) {
|
|
nsCharType charType = eCharType_LeftToRight;
|
|
PRUint32 hints = 0;
|
|
aReflowState.rendContext->GetHints(hints);
|
|
charType = (nsCharType)NS_PTR_TO_INT32(aPresContext->PropertyTable()->GetProperty(this, nsLayoutAtoms::charType));
|
|
if ((eCharType_RightToLeftArabic == charType &&
|
|
(hints & NS_RENDERING_HINT_ARABIC_SHAPING) == NS_RENDERING_HINT_ARABIC_SHAPING) ||
|
|
(eCharType_RightToLeft == charType &&
|
|
(hints & NS_RENDERING_HINT_BIDI_REORDERING) == NS_RENDERING_HINT_BIDI_REORDERING)) {
|
|
aPresContext->SetIsBidiSystem(PR_TRUE);
|
|
}
|
|
}
|
|
|
|
// Clear out the reflow state flags in mState (without destroying
|
|
// the TEXT_BLINK_ON bit).
|
|
PRBool lastTimeWeSkippedLeadingWS = 0 != (mState & TEXT_SKIP_LEADING_WS);
|
|
mState &= ~TEXT_REFLOW_FLAGS;
|
|
if (aReflowState.mFlags.mBlinks) {
|
|
if (0 == (mState & TEXT_BLINK_ON)) {
|
|
mState |= TEXT_BLINK_ON;
|
|
nsBlinkTimer::AddBlinkFrame(aPresContext, this);
|
|
}
|
|
}
|
|
else {
|
|
if (0 != (mState & TEXT_BLINK_ON)) {
|
|
mState &= ~TEXT_BLINK_ON;
|
|
nsBlinkTimer::RemoveBlinkFrame(this);
|
|
}
|
|
}
|
|
|
|
PRBool wrapping = (NS_STYLE_WHITESPACE_NORMAL == ts.mText->mWhiteSpace) ||
|
|
(NS_STYLE_WHITESPACE_MOZ_PRE_WRAP == ts.mText->mWhiteSpace);
|
|
|
|
// Set whitespace skip flag
|
|
PRBool skipWhitespace = PR_FALSE;
|
|
if (!ts.mPreformatted) {
|
|
if (lineLayout.GetEndsInWhiteSpace()) {
|
|
skipWhitespace = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
nscoord maxWidth = aReflowState.availableWidth;
|
|
|
|
// Setup text transformer to transform this frames text content
|
|
nsIDocument* doc = mContent->GetDocument();
|
|
if (!doc) {
|
|
NS_WARNING("Content has no document.");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
PRBool forceArabicShaping = (ts.mSmallCaps ||
|
|
(0 != ts.mWordSpacing) ||
|
|
(0 != ts.mLetterSpacing) ||
|
|
ts.mJustifying);
|
|
nsILineBreaker *lb = doc->GetLineBreaker();
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
// Keep the text in ascii if possible. Note that if we're measuring small
|
|
// caps text then transform to Unicode because the helper function only
|
|
// accepts Unicode text
|
|
nsresult rv = tx.Init(this, mContent, startingOffset, forceArabicShaping, !ts.mSmallCaps);
|
|
if (NS_OK != rv) {
|
|
return rv;
|
|
}
|
|
//PRInt32 contentLength = tx.GetContentLength();
|
|
|
|
// Set inWord to true if we are part of a previous piece of text's word. This
|
|
// is only valid for one pass through the measuring loop.
|
|
PRBool inWord = lineLayout.InWord() || ((nsnull != prevInFlow) && (((nsTextFrame*)prevInFlow)->mState & TEXT_FIRST_LETTER));
|
|
if (inWord) {
|
|
mState |= TEXT_IN_WORD;
|
|
}
|
|
mState &= ~TEXT_FIRST_LETTER;
|
|
|
|
PRInt32 column = lineLayout.GetColumn();
|
|
PRInt32 prevColumn = mColumn;
|
|
mColumn = column;
|
|
PRBool measureText = PR_TRUE;
|
|
|
|
// We can avoid actually measuring the text if:
|
|
// - this is a resize reflow
|
|
// - we're not dirty (see CharacterDataChanged() function)
|
|
// - we don't have a next in flow
|
|
// - the previous reflow successfully reflowed all text in the
|
|
// available space
|
|
// - we aren't computing the max element size (that requires we measure
|
|
// text)
|
|
// - skipping leading whitespace is the same as it was the last time
|
|
// - we're wrapping text and the available width is at least as big as our
|
|
// current frame width -or-
|
|
// we're not wrapping text and we're at the same column as before (this is
|
|
// an issue for preformatted tabbed text only)
|
|
// - AND we aren't justified (in which case the frame width has already been tweaked and can't be used)
|
|
if ((eReflowReason_Resize == aReflowState.reason) &&
|
|
(0 == (mState & NS_FRAME_IS_DIRTY))) {
|
|
|
|
nscoord realWidth = mRect.width;
|
|
if (mState & TEXT_TRIMMED_WS) {
|
|
// NOTE: Trailing whitespace includes word and letter spacing!
|
|
realWidth += ts.mSpaceWidth + ts.mWordSpacing + ts.mLetterSpacing;
|
|
}
|
|
if (!mNextInFlow &&
|
|
(mState & TEXT_OPTIMIZE_RESIZE) &&
|
|
!aMetrics.mComputeMEW &&
|
|
(lastTimeWeSkippedLeadingWS == skipWhitespace) &&
|
|
((wrapping && (maxWidth >= realWidth)) ||
|
|
(!wrapping && (prevColumn == column))) &&
|
|
#ifdef IBMBIDI
|
|
(0 == (mState & NS_FRAME_IS_BIDI) ) &&
|
|
#endif // IBMBIDI
|
|
!ts.mJustifying) {
|
|
// We can skip measuring of text and use the value from our
|
|
// previous reflow
|
|
measureText = PR_FALSE;
|
|
#ifdef NOISY_REFLOW
|
|
printf(" => measureText=%s wrapping=%s skipWhitespace=%s",
|
|
measureText ? "yes" : "no",
|
|
wrapping ? "yes" : "no",
|
|
skipWhitespace ? "yes" : "no");
|
|
printf(" realWidth=%d maxWidth=%d\n",
|
|
realWidth, maxWidth);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// Local state passed to the routines that do the actual text measurement
|
|
TextReflowData textData(startingOffset, wrapping, skipWhitespace,
|
|
measureText, inWord, lineLayout.GetFirstLetterStyleOK(),
|
|
lineLayout.LineIsBreakable(), aMetrics.mComputeMEW,
|
|
PR_FALSE);
|
|
|
|
// Measure the text
|
|
// MeasureText may set TEXT_TRIMMED_WS flag, so don't clear after the call
|
|
if (ts.mFont->mSize)
|
|
aStatus = MeasureText(aPresContext, aReflowState, tx, lb, ts, textData);
|
|
else {
|
|
textData.mX = 0;
|
|
textData.mAscent = 0;
|
|
textData.mDescent = 0;
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
}
|
|
if (textData.mTrailingSpaceTrimmed)
|
|
mState |= TEXT_TRIMMED_WS;
|
|
else
|
|
mState &= ~TEXT_TRIMMED_WS;
|
|
|
|
if (tx.HasMultibyte()) {
|
|
mState |= TEXT_HAS_MULTIBYTE;
|
|
}
|
|
|
|
// Setup metrics for caller; store final max-element-size information
|
|
aMetrics.width = textData.mX;
|
|
if ((0 == textData.mX) && !ts.mPreformatted) {
|
|
aMetrics.height = 0;
|
|
aMetrics.ascent = 0;
|
|
aMetrics.descent = 0;
|
|
}
|
|
else {
|
|
aMetrics.ascent = textData.mAscent;
|
|
aMetrics.descent = textData.mDescent;
|
|
aMetrics.height = aMetrics.ascent + aMetrics.descent;
|
|
}
|
|
mAscent = aMetrics.ascent;
|
|
if (!wrapping) {
|
|
textData.mMaxWordWidth = textData.mX;
|
|
}
|
|
if (aMetrics.mComputeMEW) {
|
|
aMetrics.mMaxElementWidth = textData.mMaxWordWidth;
|
|
}
|
|
|
|
// Set content offset and length
|
|
mContentOffset = startingOffset;
|
|
mContentLength = textData.mOffset - startingOffset;
|
|
|
|
// Compute space and letter counts for justification, if required
|
|
// Also use this one-shot path to compute the metrics needed for MathML, if required
|
|
// (the flag is set only if this text happens to be inside MathML)
|
|
PRBool calcMathMLMetrics = PR_FALSE;
|
|
nsAutoTextBuffer* textBufferPtr = nsnull;
|
|
#ifdef MOZ_MATHML
|
|
nsAutoTextBuffer textBuffer;
|
|
calcMathMLMetrics = (NS_REFLOW_CALC_BOUNDING_METRICS & aMetrics.mFlags) != 0;
|
|
if (calcMathMLMetrics) {
|
|
textBufferPtr = &textBuffer;
|
|
// always use the Unicode path with MathML fonts in gfx, it is safer this way
|
|
mState |= TEXT_HAS_MULTIBYTE;
|
|
}
|
|
#endif
|
|
if (ts.mJustifying || calcMathMLMetrics) {
|
|
PRIntn numJustifiableCharacter;
|
|
PRInt32 textLength;
|
|
|
|
// This will include a space for trailing whitespace, if any is present.
|
|
// This is corrected for in nsLineLayout::TrimWhiteSpaceIn.
|
|
|
|
// This work could be done in MeasureText, but it's complex to do accurately
|
|
// there because of the need to repair counts when wrapped words are backed out.
|
|
// So I do it via PrepareUnicodeText ... a little slower perhaps, but a lot saner,
|
|
// and it localizes the counting logic to one place.
|
|
PrepareUnicodeText(tx, nsnull, textBufferPtr, &textLength, PR_TRUE, &numJustifiableCharacter);
|
|
lineLayout.SetTextJustificationWeights(numJustifiableCharacter, textLength - numJustifiableCharacter);
|
|
|
|
#ifdef MOZ_MATHML
|
|
if (calcMathMLMetrics) {
|
|
SetFontFromStyle(aReflowState.rendContext, mStyleContext);
|
|
nsBoundingMetrics bm;
|
|
rv = aReflowState.rendContext->GetBoundingMetrics(textBuffer.mBuffer, textLength, bm);
|
|
if (NS_SUCCEEDED(rv))
|
|
aMetrics.mBoundingMetrics = bm;
|
|
else {
|
|
// Things didn't turn out well, just return the reflow metrics.
|
|
aMetrics.mBoundingMetrics.ascent = aMetrics.ascent;
|
|
aMetrics.mBoundingMetrics.descent = aMetrics.descent;
|
|
aMetrics.mBoundingMetrics.width = aMetrics.width;
|
|
aMetrics.mBoundingMetrics.rightBearing = aMetrics.width;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
nscoord maxFrameWidth = mRect.width;
|
|
nscoord maxFrameHeight = mRect.height;
|
|
|
|
// For future resize reflows we would like to avoid measuring the text.
|
|
// We can only do this if after this reflow we're:
|
|
// - complete. If we're not complete then our desired width doesn't
|
|
// represent our total size
|
|
// - we fit in the available space. We may be complete, but if we
|
|
// return a larger desired width than is available we may get pushed
|
|
// and our frame width won't get set
|
|
if (NS_FRAME_IS_COMPLETE(aStatus) && !NS_INLINE_IS_BREAK(aStatus) &&
|
|
(aMetrics.width <= maxWidth)) {
|
|
mState |= TEXT_OPTIMIZE_RESIZE;
|
|
mRect.width = aMetrics.width;
|
|
}
|
|
else {
|
|
mState &= ~TEXT_OPTIMIZE_RESIZE;
|
|
}
|
|
|
|
// If it's an incremental reflow command, then invalidate our existing
|
|
// bounds.
|
|
// XXX We need a finer granularity than this, but it isn't clear what
|
|
// has actually changed...
|
|
/*if (eReflowReason_Incremental == aReflowState.reason ||
|
|
eReflowReason_Dirty == aReflowState.reason) {*/
|
|
// XXX See bug 71523 We should really adjust the frames x coordinate to
|
|
// a pixel boundary to solve this.
|
|
// For now we add 1 pixel to the width of the invalidated rect.
|
|
// This fixes cases where the twips to pixel roundoff causes the invalidated
|
|
// rect's width to be one pixel short.
|
|
nscoord onePixel = aPresContext->IntScaledPixelsToTwips(1);
|
|
|
|
maxFrameWidth = PR_MAX(maxFrameWidth, mRect.width) + onePixel;
|
|
maxFrameHeight = PR_MAX(maxFrameHeight, mRect.height);
|
|
nsRect damage(0,0,maxFrameWidth,maxFrameHeight);
|
|
Invalidate(damage);
|
|
/*}*/
|
|
|
|
|
|
#ifdef NOISY_REFLOW
|
|
ListTag(stdout);
|
|
printf(": desiredSize=%d,%d(a=%d/d=%d) status=%x\n",
|
|
aMetrics.width, aMetrics.height, aMetrics.ascent, aMetrics.descent,
|
|
aStatus);
|
|
#endif
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::CanContinueTextRun(PRBool& aContinueTextRun) const
|
|
{
|
|
// We can continue a text run through a text frame
|
|
aContinueTextRun = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace)
|
|
{
|
|
aUsedSpace = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::TrimTrailingWhiteSpace(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRC,
|
|
nscoord& aDeltaWidth,
|
|
PRBool& aLastCharIsJustifiable)
|
|
{
|
|
aLastCharIsJustifiable = PR_FALSE;
|
|
mState |= TEXT_IS_END_OF_LINE;
|
|
|
|
// in some situation (for instance, in wrapping mode, last space will not
|
|
// be added to total width if it exceed maxwidth), this flag will be set
|
|
// and we shouldn't trim non-added space
|
|
if (mState & TEXT_TRIMMED_WS) {
|
|
aDeltaWidth = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
nscoord dw = 0;
|
|
const nsStyleText* textStyle = GetStyleText();
|
|
if (mContentLength &&
|
|
(NS_STYLE_WHITESPACE_PRE != textStyle->mWhiteSpace) &&
|
|
(NS_STYLE_WHITESPACE_MOZ_PRE_WRAP != textStyle->mWhiteSpace)) {
|
|
|
|
// Get the text fragments that make up our content
|
|
nsCOMPtr<nsITextContent> tc = do_QueryInterface(mContent);
|
|
if (tc) {
|
|
const nsTextFragment* frag = tc->Text();
|
|
PRInt32 lastCharIndex = mContentOffset + mContentLength - 1;
|
|
if (lastCharIndex < frag->GetLength()) {
|
|
PRUnichar ch = frag->CharAt(lastCharIndex);
|
|
if (XP_IS_SPACE(ch)) {
|
|
// Get font metrics for a space so we can adjust the width by the
|
|
// right amount.
|
|
SetFontFromStyle(&aRC, mStyleContext);
|
|
|
|
aRC.GetWidth(' ', dw);
|
|
// NOTE: Trailing whitespace includes word and letter spacing!
|
|
nsStyleUnit unit;
|
|
unit = textStyle->mWordSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
dw += textStyle->mWordSpacing.GetCoordValue();
|
|
}
|
|
unit = textStyle->mLetterSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
dw += textStyle->mLetterSpacing.GetCoordValue();
|
|
}
|
|
aLastCharIsJustifiable = PR_TRUE;
|
|
} else if (IsJustifiableCharacter(ch, IsChineseJapaneseLangGroup())) {
|
|
aLastCharIsJustifiable = PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#ifdef NOISY_TRIM
|
|
ListTag(stdout);
|
|
printf(": trim => %d\n", dw);
|
|
#endif
|
|
if (0 != dw) {
|
|
mState |= TEXT_TRIMMED_WS;
|
|
}
|
|
else {
|
|
mState &= ~TEXT_TRIMMED_WS;
|
|
}
|
|
aDeltaWidth = dw;
|
|
return NS_OK;
|
|
}
|
|
|
|
static void
|
|
RevertSpacesToNBSP(PRUnichar* aBuffer, PRInt32 aWordLen)
|
|
{
|
|
PRUnichar* end = aBuffer + aWordLen;
|
|
for (; aBuffer < end; aBuffer++) {
|
|
PRUnichar ch = *aBuffer;
|
|
if (ch == ' ') {
|
|
*aBuffer = CH_NBSP;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsTextDimensions
|
|
nsTextFrame::ComputeTotalWordDimensions(nsPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
const nsTextDimensions& aBaseDimensions,
|
|
PRUnichar* aWordBuf,
|
|
PRUint32 aWordLen,
|
|
PRUint32 aWordBufSize,
|
|
PRBool aCanBreakBefore)
|
|
{
|
|
// Before we get going, convert any spaces in the current word back
|
|
// to nbsp's. This keeps the breaking logic happy.
|
|
RevertSpacesToNBSP(aWordBuf, (PRInt32) aWordLen);
|
|
|
|
nsTextDimensions addedDimensions;
|
|
PRUnichar *newWordBuf = aWordBuf;
|
|
PRUint32 newWordBufSize = aWordBufSize;
|
|
while (aNextFrame) {
|
|
nsIContent* content = aNextFrame->GetContent();
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" next textRun=");
|
|
nsFrame::ListTag(stdout, aNextFrame);
|
|
printf("\n");
|
|
#endif
|
|
|
|
nsCOMPtr<nsITextContent> tc(do_QueryInterface(content));
|
|
if (tc) {
|
|
PRInt32 moreSize = 0;
|
|
nsTextDimensions moreDimensions;
|
|
moreDimensions = ComputeWordFragmentDimensions(aPresContext,
|
|
aLineBreaker,
|
|
aLineLayout,
|
|
aReflowState,
|
|
aNextFrame, content, tc,
|
|
&moreSize,
|
|
newWordBuf,
|
|
aWordLen,
|
|
newWordBufSize,
|
|
aCanBreakBefore);
|
|
if (moreSize > 0) {
|
|
//Oh, wordBuf is too small, we have to grow it
|
|
newWordBufSize += moreSize;
|
|
if (newWordBuf != aWordBuf) {
|
|
newWordBuf = (PRUnichar*)nsMemory::Realloc(newWordBuf, sizeof(PRUnichar)*newWordBufSize);
|
|
NS_ASSERTION(newWordBuf, "not enough memory");
|
|
} else {
|
|
newWordBuf = (PRUnichar*)nsMemory::Alloc(sizeof(PRUnichar)*newWordBufSize);
|
|
NS_ASSERTION(newWordBuf, "not enough memory");
|
|
if(newWordBuf) {
|
|
memcpy((void*)newWordBuf, aWordBuf, sizeof(PRUnichar)*(newWordBufSize-moreSize));
|
|
}
|
|
}
|
|
|
|
if(newWordBuf) {
|
|
moreDimensions =
|
|
ComputeWordFragmentDimensions(aPresContext, aLineBreaker,
|
|
aLineLayout, aReflowState,
|
|
aNextFrame, content, tc, &moreSize,
|
|
newWordBuf, aWordLen, newWordBufSize,
|
|
aCanBreakBefore);
|
|
NS_ASSERTION((moreSize <= 0),
|
|
"ComputeWordFragmentDimensions is asking more buffer");
|
|
} else {
|
|
moreSize = -1;
|
|
moreDimensions.Clear();
|
|
}
|
|
}
|
|
|
|
addedDimensions.Combine(moreDimensions);
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" moreWidth=%d (addedWidth=%d) stop=%c\n", moreDimensions.width,
|
|
addedDimensions.width, stop?'T':'F');
|
|
#endif
|
|
if (moreSize == -1) {
|
|
goto done;
|
|
}
|
|
}
|
|
else {
|
|
// It claimed it was text but it doesn't implement the
|
|
// nsITextContent API. Therefore I don't know what to do with it
|
|
// and can't look inside it. Oh well.
|
|
goto done;
|
|
}
|
|
|
|
// Move on to the next frame in the text-run
|
|
aNextFrame = aLineLayout.FindNextText(aPresContext, aNextFrame);
|
|
}
|
|
|
|
done:;
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" total word width=%d\n", aBaseDimensions.width + addedDimensions.width);
|
|
#endif
|
|
if (newWordBuf && (newWordBuf != aWordBuf)) {
|
|
nsMemory::Free(newWordBuf);
|
|
}
|
|
addedDimensions.Combine(aBaseDimensions);
|
|
return addedDimensions;
|
|
}
|
|
|
|
nsTextDimensions
|
|
nsTextFrame::ComputeWordFragmentDimensions(nsPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
nsIContent* aContent,
|
|
nsITextContent* aText,
|
|
PRInt32* aMoreSize,
|
|
const PRUnichar* aWordBuf,
|
|
PRUint32& aRunningWordLen,
|
|
PRUint32 aWordBufSize,
|
|
PRBool aCanBreakBefore)
|
|
{
|
|
nsTextTransformer tx(aLineBreaker, nsnull, aPresContext);
|
|
tx.Init(aNextFrame, aContent, 0);
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
nsTextDimensions dimensions;
|
|
#ifdef IBMBIDI
|
|
if (aNextFrame->GetStateBits() & NS_FRAME_IS_BIDI) {
|
|
PRInt32 nextFrameStart, nextFrameEnd;
|
|
aNextFrame->GetOffsets(nextFrameStart, nextFrameEnd);
|
|
wordLen = nextFrameEnd;
|
|
} else {
|
|
wordLen = -1;
|
|
}
|
|
#endif // IBMBIDI
|
|
*aMoreSize = 0;
|
|
PRUnichar* bp = tx.GetNextWord(PR_TRUE, &wordLen, &contentLen, &isWhitespace, &wasTransformed);
|
|
if (!bp) {
|
|
//empty text node, but we need to continue lookahead measurement
|
|
// AND we need to remember the text frame for later so that we don't
|
|
// bother doing the word look ahead.
|
|
aLineLayout.RecordWordFrame(aNextFrame);
|
|
return dimensions; // 0
|
|
}
|
|
|
|
if (isWhitespace) {
|
|
// Don't bother measuring nothing
|
|
*aMoreSize = -1; // flag that we should stop now
|
|
return dimensions; // 0
|
|
}
|
|
|
|
// We need to adjust the length by looking at the two pieces together. But if
|
|
// we have to grow aWordBuf, ask the caller to do it by returning the shortfall
|
|
if ((wordLen + aRunningWordLen) > aWordBufSize) {
|
|
*aMoreSize = wordLen + aRunningWordLen - aWordBufSize;
|
|
return dimensions; // 0
|
|
}
|
|
if (contentLen < tx.GetContentLength())
|
|
*aMoreSize = -1;
|
|
|
|
// Convert any spaces in the current word back to nbsp's. This keeps
|
|
// the breaking logic happy.
|
|
RevertSpacesToNBSP(bp, wordLen);
|
|
|
|
if (aCanBreakBefore) {
|
|
if(wordLen > 0)
|
|
{
|
|
memcpy((void*)&(aWordBuf[aRunningWordLen]), bp, sizeof(PRUnichar)*wordLen);
|
|
|
|
PRUint32 breakP=0;
|
|
PRBool needMore=PR_TRUE;
|
|
nsresult lres = aLineBreaker->Next(aWordBuf, aRunningWordLen+wordLen,
|
|
0, &breakP, &needMore);
|
|
if(NS_SUCCEEDED(lres))
|
|
{
|
|
// when we look at two pieces text together, we might decide to break
|
|
// eariler than if we only look at the 2nd pieces of text
|
|
if(!needMore && (breakP < (aRunningWordLen + wordLen)))
|
|
{
|
|
wordLen = breakP - aRunningWordLen;
|
|
if(wordLen < 0)
|
|
wordLen = 0;
|
|
*aMoreSize = -1;
|
|
}
|
|
}
|
|
|
|
// if we don't stop, we need to extend the buf so the next one can
|
|
// see this part otherwise, it does not matter since we will stop
|
|
// anyway
|
|
if (*aMoreSize != -1)
|
|
aRunningWordLen += wordLen;
|
|
}
|
|
}
|
|
else {
|
|
// Even if the previous text fragment is not breakable, the connected pieces
|
|
// can be breakable in between. This especially true for CJK.
|
|
PRBool canBreak;
|
|
nsresult lres = aLineBreaker->BreakInBetween(aWordBuf, aRunningWordLen, bp, wordLen, &canBreak);
|
|
if (NS_SUCCEEDED(lres) && canBreak) {
|
|
wordLen = 0;
|
|
*aMoreSize = -1;
|
|
}
|
|
}
|
|
|
|
if ((*aMoreSize == -1) && (wordLen == 0))
|
|
return dimensions; // 0;
|
|
|
|
nsStyleContext* sc = aNextFrame->GetStyleContext();
|
|
if (sc) {
|
|
// Measure the piece of text. Note that we have to select the
|
|
// appropriate font into the text first because the rendering
|
|
// context has our font in it, not the font that aText is using.
|
|
nsIRenderingContext& rc = *aReflowState.rendContext;
|
|
nsCOMPtr<nsIFontMetrics> oldfm;
|
|
rc.GetFontMetrics(*getter_AddRefs(oldfm));
|
|
|
|
TextStyle ts(aLineLayout.mPresContext, rc, sc);
|
|
if (ts.mSmallCaps) {
|
|
MeasureSmallCapsText(aReflowState, ts, bp, wordLen, PR_FALSE, &dimensions);
|
|
}
|
|
else {
|
|
rc.GetTextDimensions(bp, wordLen, dimensions);
|
|
// NOTE: Don't forget to add letter spacing for the word fragment!
|
|
dimensions.width += wordLen*ts.mLetterSpacing;
|
|
}
|
|
rc.SetFont(oldfm);
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
nsAutoString tmp(bp, wordLen);
|
|
printf(" fragment='");
|
|
fputs(NS_LossyConvertUCS2toASCII(tmp).get(), stdout);
|
|
printf("' width=%d [wordLen=%d contentLen=%d ContentLength=%d]\n",
|
|
dimensions.width, wordLen, contentLen, tx.GetContentLength());
|
|
#endif
|
|
|
|
// Remember the text frame for later so that we don't bother doing
|
|
// the word look ahead.
|
|
aLineLayout.RecordWordFrame(aNextFrame);
|
|
return dimensions;
|
|
}
|
|
|
|
*aMoreSize = -1;
|
|
return dimensions; // 0
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// Translate the mapped content into a string that's printable
|
|
void
|
|
nsTextFrame::ToCString(nsString& aBuf, PRInt32* aTotalContentLength) const
|
|
{
|
|
// Get the frames text content
|
|
nsCOMPtr<nsITextContent> tc(do_QueryInterface(mContent));
|
|
if (!tc) {
|
|
return;
|
|
}
|
|
|
|
const nsTextFragment* frag = tc->Text();
|
|
|
|
// Compute the total length of the text content.
|
|
*aTotalContentLength = frag->GetLength();
|
|
|
|
// Set current fragment and current fragment offset
|
|
if (0 == mContentLength) {
|
|
return;
|
|
}
|
|
PRInt32 fragOffset = mContentOffset;
|
|
PRInt32 n = fragOffset + mContentLength;
|
|
while (fragOffset < n) {
|
|
PRUnichar ch = frag->CharAt(fragOffset++);
|
|
if (ch == '\r') {
|
|
aBuf.AppendLiteral("\\r");
|
|
} else if (ch == '\n') {
|
|
aBuf.AppendLiteral("\\n");
|
|
} else if (ch == '\t') {
|
|
aBuf.AppendLiteral("\\t");
|
|
} else if ((ch < ' ') || (ch >= 127)) {
|
|
aBuf.AppendLiteral("\\0");
|
|
aBuf.AppendInt((PRInt32)ch, 8);
|
|
} else {
|
|
aBuf.Append(ch);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsIAtom*
|
|
nsTextFrame::GetType() const
|
|
{
|
|
return nsLayoutAtoms::textFrame;
|
|
}
|
|
|
|
/* virtual */ PRBool
|
|
nsTextFrame::IsEmpty()
|
|
{
|
|
NS_ASSERTION(!(mState & TEXT_IS_ONLY_WHITESPACE) ||
|
|
!(mState & TEXT_ISNOT_ONLY_WHITESPACE),
|
|
"Invalid state");
|
|
|
|
// XXXldb Should this check compatibility mode as well???
|
|
if (GetStyleText()->WhiteSpaceIsSignificant()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (mState & TEXT_ISNOT_ONLY_WHITESPACE) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (mState & TEXT_IS_ONLY_WHITESPACE) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsCOMPtr<nsITextContent> textContent( do_QueryInterface(mContent) );
|
|
if (! textContent) {
|
|
NS_NOTREACHED("text frame has no text content");
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRBool isEmpty = textContent->IsOnlyWhitespace();
|
|
mState |= (isEmpty ? TEXT_IS_ONLY_WHITESPACE : TEXT_ISNOT_ONLY_WHITESPACE);
|
|
return isEmpty;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("Text"), aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsFrameState)
|
|
nsTextFrame::GetDebugStateBits() const
|
|
{
|
|
// mask out our emptystate flags; those are just caches
|
|
return nsFrame::GetDebugStateBits() &
|
|
~(TEXT_WHITESPACE_FLAGS | TEXT_REFLOW_FLAGS);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::List(nsPresContext* aPresContext, FILE* out, PRInt32 aIndent) const
|
|
{
|
|
// Output the tag
|
|
IndentBy(out, aIndent);
|
|
ListTag(out);
|
|
#ifdef DEBUG_waterson
|
|
fprintf(out, " [parent=%p]", mParent);
|
|
#endif
|
|
if (HasView()) {
|
|
fprintf(out, " [view=%p]", NS_STATIC_CAST(void*, GetView()));
|
|
}
|
|
|
|
PRInt32 totalContentLength;
|
|
nsAutoString tmp;
|
|
ToCString(tmp, &totalContentLength);
|
|
|
|
// Output the first/last content offset and prev/next in flow info
|
|
PRBool isComplete = (mContentOffset + mContentLength) == totalContentLength;
|
|
fprintf(out, "[%d,%d,%c] ",
|
|
mContentOffset, mContentLength,
|
|
isComplete ? 'T':'F');
|
|
|
|
if (nsnull != mNextSibling) {
|
|
fprintf(out, " next=%p", NS_STATIC_CAST(void*, mNextSibling));
|
|
}
|
|
nsIFrame* prevInFlow = GetPrevInFlow();
|
|
if (nsnull != prevInFlow) {
|
|
fprintf(out, " prev-in-flow=%p", NS_STATIC_CAST(void*, prevInFlow));
|
|
}
|
|
if (nsnull != mNextInFlow) {
|
|
fprintf(out, " next-in-flow=%p", NS_STATIC_CAST(void*, mNextInFlow));
|
|
}
|
|
|
|
// Output the rect and state
|
|
fprintf(out, " {%d,%d,%d,%d}", mRect.x, mRect.y, mRect.width, mRect.height);
|
|
if (0 != mState) {
|
|
if (mState & NS_FRAME_SELECTED_CONTENT) {
|
|
fprintf(out, " [state=%08x] SELECTED", mState);
|
|
} else {
|
|
fprintf(out, " [state=%08x]", mState);
|
|
}
|
|
}
|
|
fprintf(out, " [content=%p]", NS_STATIC_CAST(void*, mContent));
|
|
fprintf(out, " sc=%p", NS_STATIC_CAST(void*, mStyleContext));
|
|
nsIAtom* pseudoTag = mStyleContext->GetPseudoType();
|
|
if (pseudoTag) {
|
|
nsAutoString atomString;
|
|
pseudoTag->ToString(atomString);
|
|
fprintf(out, " pst=%s",
|
|
NS_LossyConvertUCS2toASCII(atomString).get());
|
|
}
|
|
fputs("<\n", out);
|
|
|
|
// Output the text
|
|
aIndent++;
|
|
|
|
IndentBy(out, aIndent);
|
|
fputs("\"", out);
|
|
fputs(NS_LossyConvertUCS2toASCII(tmp).get(), out);
|
|
fputs("\"\n", out);
|
|
|
|
aIndent--;
|
|
IndentBy(out, aIndent);
|
|
fputs(">\n", out);
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
void nsTextFrame::AdjustSelectionPointsForBidi(SelectionDetails *sdptr,
|
|
PRInt32 textLength,
|
|
PRBool isRTLChars,
|
|
PRBool isOddLevel,
|
|
PRBool isBidiSystem)
|
|
{
|
|
/* This adjustment is required whenever the text has been reversed by
|
|
* Mozilla before rendering.
|
|
*
|
|
* In theory this means any text whose Bidi embedding level has been
|
|
* set by the Unicode Bidi algorithm to an odd value, but this is
|
|
* only true in practice on a non-Bidi platform.
|
|
*
|
|
* On a Bidi platform the situation is more complicated because the
|
|
* platform will automatically reverse right-to-left characters; so
|
|
* Mozilla reverses text whose natural directionality is the opposite
|
|
* of its embedding level: right-to-left characters whose Bidi
|
|
* embedding level is even (e.g. Visual Hebrew) or left-to-right and
|
|
* neutral characters whose Bidi embedding level is odd (e.g. English
|
|
* text with <bdo dir="rtl">).
|
|
*
|
|
* The following condition is accordingly an optimization of
|
|
* if ( (!isBidiSystem && isOddLevel) ||
|
|
* (isBidiSystem &&
|
|
* ((isRTLChars && !isOddLevel) ||
|
|
* (!isRTLChars && isOddLevel))))
|
|
*/
|
|
if (isOddLevel ^ (isRTLChars && isBidiSystem)) {
|
|
|
|
PRInt32 swap = sdptr->mStart;
|
|
sdptr->mStart = textLength - sdptr->mEnd;
|
|
sdptr->mEnd = textLength - swap;
|
|
|
|
// temp fix for 75026 crasher untill we fix the bidi code
|
|
// the above bidi code cause mStart < 0 in some case
|
|
// the problem is we have whitespace compression code in
|
|
// nsTextTransformer which cause mEnd > textLength
|
|
NS_ASSERTION((sdptr->mStart >= 0) , "mStart >= 0");
|
|
if(sdptr->mStart < 0 )
|
|
sdptr->mStart = 0;
|
|
|
|
NS_ASSERTION((sdptr->mEnd >= 0) , "mEnd >= 0");
|
|
if(sdptr->mEnd < 0 )
|
|
sdptr->mEnd = 0;
|
|
|
|
NS_ASSERTION((sdptr->mStart <= sdptr->mEnd), "mStart <= mEnd");
|
|
if(sdptr->mStart > sdptr->mEnd)
|
|
sdptr->mEnd = sdptr->mStart;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
nsTextFrame::AdjustOffsetsForBidi(PRInt32 aStart, PRInt32 aEnd)
|
|
{
|
|
AddStateBits(NS_FRAME_IS_BIDI);
|
|
SetOffsets(aStart, aEnd);
|
|
}
|
|
|
|
void
|
|
nsTextFrame::SetOffsets(PRInt32 aStart, PRInt32 aEnd)
|
|
{
|
|
mContentOffset = aStart;
|
|
mContentLength = aEnd - aStart;
|
|
}
|