b23e7af50b
the printing of headers and footers. Printing of selection is implemented by the frames figuring out if they are in the selection and painting if they or not they they don't paint. This also only allows the printing of the first page of selections, alothough it is well documented where this is implemeted so it can be removed. Bugs 63426, 31218, 61075 r=dcone,kmcclusk,erik,buster sr=waterson git-svn-id: svn://10.0.0.236/trunk@85624 18797224-902f-48f8-a5cc-f745e15eee43
5000 lines
162 KiB
C++
5000 lines
162 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
* Robert O'Callahan <roc+moz@cs.cmu.edu>
|
|
*/
|
|
#include "nsCOMPtr.h"
|
|
#include "nsHTMLParts.h"
|
|
#include "nsCRT.h"
|
|
#include "nsSplittableFrame.h"
|
|
#include "nsLineLayout.h"
|
|
#include "nsString.h"
|
|
#include "nsIPresContext.h"
|
|
#include "nsIContent.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsCoord.h"
|
|
#include "nsIFontMetrics.h"
|
|
#include "nsIRenderingContext.h"
|
|
#include "nsHTMLIIDs.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsIView.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsITimerCallback.h"
|
|
#include "nsITimer.h"
|
|
#include "prtime.h"
|
|
#include "nsVoidArray.h"
|
|
#include "prprf.h"
|
|
#include "nsIDOMText.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIDeviceContext.h"
|
|
#include "nsIFocusTracker.h"
|
|
#include "nsICaret.h"
|
|
#include "nsHTMLAtoms.h"
|
|
#include "nsILineBreaker.h"
|
|
#include "nsIWordBreaker.h"
|
|
|
|
#include "nsITextContent.h"
|
|
#include "nsTextFragment.h"
|
|
#include "nsTextTransformer.h"
|
|
#include "nsLayoutAtoms.h"
|
|
#include "nsIFrameSelection.h"
|
|
#include "nsISelection.h"
|
|
#include "nsIDOMRange.h"
|
|
#include "nsILookAndFeel.h"
|
|
|
|
#include "nsILineIterator.h"
|
|
|
|
#include "nsIPref.h"
|
|
#include "nsIServiceManager.h"
|
|
|
|
#ifndef PR_ABS
|
|
#define PR_ABS(x) ((x) < 0 ? -(x) : (x))
|
|
#endif
|
|
|
|
static NS_DEFINE_CID(kPrefCID, NS_PREF_CID);
|
|
|
|
#ifdef NS_DEBUG
|
|
#undef NOISY_BLINK
|
|
#undef DEBUG_WORD_WRAPPING
|
|
#undef NOISY_REFLOW
|
|
#undef NOISY_TRIM
|
|
#else
|
|
#undef NOISY_BLINK
|
|
#undef DEBUG_WORD_WRAPPING
|
|
#undef NOISY_REFLOW
|
|
#undef NOISY_TRIM
|
|
#endif
|
|
|
|
// #define DEBUGWORDJUMP
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
#define TEXT_BUF_SIZE 100
|
|
|
|
//----------------------------------------
|
|
|
|
struct nsAutoIndexBuffer {
|
|
nsAutoIndexBuffer();
|
|
~nsAutoIndexBuffer();
|
|
|
|
nsresult GrowTo(PRInt32 aAtLeast);
|
|
|
|
PRInt32* mBuffer;
|
|
PRInt32 mBufferLen;
|
|
PRInt32 mAutoBuffer[TEXT_BUF_SIZE];
|
|
};
|
|
|
|
nsAutoIndexBuffer::nsAutoIndexBuffer()
|
|
: mBuffer(mAutoBuffer),
|
|
mBufferLen(TEXT_BUF_SIZE)
|
|
{
|
|
nsCRT::memset(mAutoBuffer, 0, sizeof(mAutoBuffer));
|
|
}
|
|
|
|
nsAutoIndexBuffer::~nsAutoIndexBuffer()
|
|
{
|
|
if (mBuffer && (mBuffer != mAutoBuffer)) {
|
|
delete [] mBuffer;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsAutoIndexBuffer::GrowTo(PRInt32 aAtLeast)
|
|
{
|
|
if (aAtLeast > mBufferLen)
|
|
{
|
|
PRInt32 newSize = mBufferLen * 2;
|
|
if (newSize < mBufferLen + aAtLeast) {
|
|
newSize = mBufferLen * 2 + aAtLeast;
|
|
}
|
|
PRInt32* newBuffer = new PRInt32[newSize];
|
|
if (!newBuffer) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
nsCRT::memset(newBuffer, 0, sizeof(PRInt32) * newSize);
|
|
nsCRT::memcpy(newBuffer, mBuffer, sizeof(PRInt32) * mBufferLen);
|
|
if (mBuffer != mAutoBuffer) {
|
|
delete [] mBuffer;
|
|
}
|
|
mBuffer = newBuffer;
|
|
mBufferLen = newSize;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
// Helper class for managing blinking text
|
|
|
|
class nsBlinkTimer : public nsITimerCallback
|
|
{
|
|
public:
|
|
nsBlinkTimer();
|
|
virtual ~nsBlinkTimer();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
void AddFrame(nsIPresContext* aPresContext, nsIFrame* aFrame);
|
|
|
|
PRBool RemoveFrame(nsIFrame* aFrame);
|
|
|
|
PRInt32 FrameCount();
|
|
|
|
void Start();
|
|
|
|
void Stop();
|
|
|
|
NS_IMETHOD_(void) Notify(nsITimer *timer);
|
|
|
|
static nsresult AddBlinkFrame(nsIPresContext* aPresContext, nsIFrame* aFrame);
|
|
static nsresult RemoveBlinkFrame(nsIFrame* aFrame);
|
|
|
|
static PRBool GetBlinkIsOff() { return sBlinkTextOff; }
|
|
|
|
protected:
|
|
|
|
struct FrameData {
|
|
nsIPresContext* mPresContext; // pres context associated with the frame
|
|
nsIFrame* mFrame;
|
|
|
|
|
|
FrameData(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame)
|
|
: mPresContext(aPresContext), mFrame(aFrame) {}
|
|
};
|
|
|
|
nsCOMPtr<nsITimer> mTimer;
|
|
nsVoidArray mFrames;
|
|
nsIPresContext* mPresContext;
|
|
|
|
protected:
|
|
|
|
static nsBlinkTimer* sTextBlinker;
|
|
static PRBool sBlinkTextOff;
|
|
|
|
};
|
|
|
|
nsBlinkTimer* nsBlinkTimer::sTextBlinker = nsnull;
|
|
PRBool nsBlinkTimer::sBlinkTextOff = PR_FALSE;
|
|
|
|
#ifdef NOISY_BLINK
|
|
static PRTime gLastTick;
|
|
#endif
|
|
|
|
nsBlinkTimer::nsBlinkTimer()
|
|
{
|
|
NS_INIT_REFCNT();
|
|
}
|
|
|
|
nsBlinkTimer::~nsBlinkTimer()
|
|
{
|
|
Stop();
|
|
sTextBlinker = nsnull;
|
|
}
|
|
|
|
void nsBlinkTimer::Start()
|
|
{
|
|
nsresult rv;
|
|
mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
|
|
if (NS_OK == rv) {
|
|
mTimer->Init(this, 750, NS_PRIORITY_NORMAL, NS_TYPE_REPEATING_PRECISE);
|
|
}
|
|
}
|
|
|
|
void nsBlinkTimer::Stop()
|
|
{
|
|
if (nsnull != mTimer) {
|
|
mTimer->Cancel();
|
|
}
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsBlinkTimer, NS_GET_IID(nsITimerCallback));
|
|
|
|
void nsBlinkTimer::AddFrame(nsIPresContext* aPresContext, nsIFrame* aFrame) {
|
|
FrameData* frameData = new FrameData(aPresContext, aFrame);
|
|
mFrames.AppendElement(frameData);
|
|
if (1 == mFrames.Count()) {
|
|
Start();
|
|
}
|
|
}
|
|
|
|
PRBool nsBlinkTimer::RemoveFrame(nsIFrame* aFrame) {
|
|
PRInt32 i, n = mFrames.Count();
|
|
PRBool rv = PR_FALSE;
|
|
for (i = 0; i < n; i++) {
|
|
FrameData* frameData = (FrameData*) mFrames.ElementAt(i);
|
|
|
|
if (frameData->mFrame == aFrame) {
|
|
rv = mFrames.RemoveElementAt(i);
|
|
delete frameData;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (0 == mFrames.Count()) {
|
|
Stop();
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
PRInt32 nsBlinkTimer::FrameCount() {
|
|
return mFrames.Count();
|
|
}
|
|
|
|
NS_IMETHODIMP_(void) nsBlinkTimer::Notify(nsITimer *timer)
|
|
{
|
|
// Toggle blink state bit so that text code knows whether or not to
|
|
// render. All text code shares the same flag so that they all blink
|
|
// in unison.
|
|
sBlinkTextOff = PRBool(!sBlinkTextOff);
|
|
|
|
#ifndef REPEATING_TIMERS
|
|
// XXX hack to get auto-repeating timers; restart before doing
|
|
// expensive work so that time between ticks is more even
|
|
Stop();
|
|
Start();
|
|
#endif
|
|
|
|
#ifdef NOISY_BLINK
|
|
PRTime now = PR_Now();
|
|
char buf[50];
|
|
PRTime delta;
|
|
LL_SUB(delta, now, gLastTick);
|
|
gLastTick = now;
|
|
PR_snprintf(buf, sizeof(buf), "%lldusec", delta);
|
|
printf("%s\n", buf);
|
|
#endif
|
|
|
|
PRInt32 i, n = mFrames.Count();
|
|
for (i = 0; i < n; i++) {
|
|
FrameData* frameData = (FrameData*) mFrames.ElementAt(i);
|
|
|
|
// Determine damaged area and tell view manager to redraw it
|
|
nsPoint offset;
|
|
nsRect bounds;
|
|
frameData->mFrame->GetRect(bounds);
|
|
nsIView* view;
|
|
frameData->mFrame->GetOffsetFromView(frameData->mPresContext, offset, &view);
|
|
nsIViewManager* vm;
|
|
view->GetViewManager(vm);
|
|
bounds.x = offset.x;
|
|
bounds.y = offset.y;
|
|
vm->UpdateView(view, bounds, 0);
|
|
NS_RELEASE(vm);
|
|
}
|
|
}
|
|
|
|
|
|
// static
|
|
nsresult nsBlinkTimer::AddBlinkFrame(nsIPresContext* aPresContext, nsIFrame* aFrame)
|
|
{
|
|
if (!sTextBlinker)
|
|
{
|
|
sTextBlinker = new nsBlinkTimer;
|
|
if (!sTextBlinker) return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
NS_ADDREF(sTextBlinker);
|
|
|
|
sTextBlinker->AddFrame(aPresContext, aFrame);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// static
|
|
nsresult nsBlinkTimer::RemoveBlinkFrame(nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(sTextBlinker, "Should have blink timer here");
|
|
|
|
nsBlinkTimer* blinkTimer = sTextBlinker; // copy so we can call NS_RELEASE on it
|
|
if (!blinkTimer) return NS_OK;
|
|
|
|
blinkTimer->RemoveFrame(aFrame);
|
|
NS_RELEASE(blinkTimer);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
class nsTextFrame : public nsFrame {
|
|
public:
|
|
nsTextFrame();
|
|
|
|
// nsIFrame
|
|
NS_IMETHOD Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer);
|
|
|
|
NS_IMETHOD GetCursor(nsIPresContext* aPresContext,
|
|
nsPoint& aPoint,
|
|
PRInt32& aCursor);
|
|
|
|
NS_IMETHOD ContentChanged(nsIPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
nsISupports* aSubContent);
|
|
|
|
NS_IMETHOD GetNextInFlow(nsIFrame** aNextInFlow) const {
|
|
*aNextInFlow = mNextInFlow;
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHOD SetNextInFlow(nsIFrame* aNextInFlow) {
|
|
mNextInFlow = aNextInFlow;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD IsSplittable(nsSplittableType& aIsSplittable) const {
|
|
aIsSplittable = NS_FRAME_SPLITTABLE;
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* Get the "type" of the frame
|
|
*
|
|
* @see nsLayoutAtoms::textFrame
|
|
*/
|
|
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD List(nsIPresContext* aPresContext, FILE* out, PRInt32 aIndent) const;
|
|
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
|
|
NS_IMETHOD GetFrameName(nsString& aResult) const;
|
|
#endif
|
|
|
|
NS_IMETHOD GetPosition(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd);
|
|
|
|
NS_IMETHOD GetContentAndOffsetsFromPoint(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent);
|
|
|
|
NS_IMETHOD GetPositionSlowly(nsIPresContext* aCX,
|
|
nsIRenderingContext * aRendContext,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aOffset);
|
|
|
|
|
|
NS_IMETHOD SetSelected(nsIPresContext* aPresContext,
|
|
nsIDOMRange *aRange,
|
|
PRBool aSelected,
|
|
nsSpread aSpread);
|
|
|
|
NS_IMETHOD PeekOffset(nsIPresContext* aPresContext, nsPeekOffsetStruct *aPos);
|
|
NS_IMETHOD CheckVisibility(nsIPresContext* aContext, PRInt32 aStartIndex, PRInt32 aEndIndex, PRBool aRecurse, PRBool *aFinished, PRBool *_retval);
|
|
|
|
NS_IMETHOD HandleMultiplePress(nsIPresContext* aPresContext,
|
|
nsGUIEvent * aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
|
|
NS_IMETHOD GetOffsets(PRInt32 &start, PRInt32 &end)const;
|
|
|
|
NS_IMETHOD GetPointFromOffset(nsIPresContext* inPresContext,
|
|
nsIRenderingContext* inRendContext,
|
|
PRInt32 inOffset,
|
|
nsPoint* outPoint);
|
|
|
|
NS_IMETHOD GetChildFrameContainingOffset(PRInt32 inContentOffset,
|
|
PRBool inHint,
|
|
PRInt32* outFrameContentOffset,
|
|
nsIFrame* *outChildFrame);
|
|
|
|
NS_IMETHOD IsVisibleForPainting(nsIPresContext * aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
PRBool aCheckVis,
|
|
PRBool* aIsVisible);
|
|
|
|
// nsIHTMLReflow
|
|
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
NS_IMETHOD CanContinueTextRun(PRBool& aContinueTextRun) const;
|
|
NS_IMETHOD AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace);
|
|
NS_IMETHOD TrimTrailingWhiteSpace(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRC,
|
|
nscoord& aDeltaWidth);
|
|
|
|
struct TextStyle {
|
|
const nsStyleFont* mFont;
|
|
const nsStyleText* mText;
|
|
const nsStyleColor* mColor;
|
|
const nsStyleDisplay* mDisplay;
|
|
nsIFontMetrics* mNormalFont;
|
|
nsIFontMetrics* mSmallFont;
|
|
nsIFontMetrics* mLastFont;
|
|
PRBool mSmallCaps;
|
|
nscoord mWordSpacing;
|
|
nscoord mLetterSpacing;
|
|
nscolor mSelectionTextColor;
|
|
nscolor mSelectionBGColor;
|
|
nscoord mSpaceWidth;
|
|
nscoord mAveCharWidth;
|
|
PRBool mJustifying;
|
|
PRBool mPreformatted;
|
|
PRInt32 mNumSpacesToRender;
|
|
PRInt32 mNumSpacesToMeasure;
|
|
nscoord mExtraSpacePerSpace;
|
|
PRInt32 mNumSpacesReceivingExtraJot;
|
|
|
|
TextStyle(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* sc)
|
|
{
|
|
mFont = nsnull;
|
|
mText = nsnull;
|
|
mColor = nsnull;
|
|
mNormalFont = nsnull;
|
|
mSmallFont = nsnull;
|
|
mLastFont = nsnull;
|
|
|
|
// Get style data
|
|
mColor = (const nsStyleColor*) sc->GetStyleData(eStyleStruct_Color);
|
|
mFont = (const nsStyleFont*) sc->GetStyleData(eStyleStruct_Font);
|
|
mText = (const nsStyleText*) sc->GetStyleData(eStyleStruct_Text);
|
|
mDisplay = (const nsStyleDisplay*) sc->GetStyleData(eStyleStruct_Display);
|
|
|
|
// 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.
|
|
PRUint8 originalDecorations = plainFont->decorations;
|
|
plainFont->decorations = NS_FONT_DECORATION_NONE;
|
|
nsCOMPtr<nsIDeviceContext> deviceContext;
|
|
aRenderingContext.GetDeviceContext(*getter_AddRefs(deviceContext));
|
|
nsCOMPtr<nsIAtom> langGroup;
|
|
if (mDisplay->mLanguage) {
|
|
mDisplay->mLanguage->GetLanguageGroup(getter_AddRefs(langGroup));
|
|
}
|
|
deviceContext->GetMetricsFor(*plainFont, langGroup, mNormalFont);
|
|
aRenderingContext.SetFont(mNormalFont);
|
|
aRenderingContext.GetWidth(' ', mSpaceWidth);
|
|
mAveCharWidth = 0;
|
|
#if defined(_WIN32) || defined(XP_OS2)
|
|
mNormalFont->GetAveCharWidth(mAveCharWidth);
|
|
#endif
|
|
if (0 == mAveCharWidth) {
|
|
// provide a default if it could not be resolved
|
|
mAveCharWidth = 10;
|
|
}
|
|
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);
|
|
aPresContext->GetMetricsFor(*plainFont, &mSmallFont);
|
|
// Reset to the size value saved earlier.
|
|
plainFont->size = originalSize;
|
|
}
|
|
else {
|
|
mSmallFont = nsnull;
|
|
}
|
|
|
|
// Reset to the decoration saved earlier
|
|
plainFont->decorations = originalDecorations;
|
|
|
|
// Get colors from look&feel
|
|
mSelectionBGColor = NS_RGB(0, 0, 0);
|
|
mSelectionTextColor = NS_RGB(255, 255, 255);
|
|
nsILookAndFeel* look = nsnull;
|
|
if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(&look)) && look) {
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectBackground, mSelectionBGColor);
|
|
look->GetColor(nsILookAndFeel::eColor_TextSelectForeground, mSelectionTextColor);
|
|
NS_RELEASE(look);
|
|
}
|
|
|
|
// Get the word and letter spacing
|
|
mWordSpacing = 0;
|
|
PRIntn unit = mText->mWordSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
mWordSpacing = mText->mWordSpacing.GetCoordValue();
|
|
}
|
|
|
|
mLetterSpacing = 0;
|
|
unit = mText->mLetterSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
mLetterSpacing = mText->mLetterSpacing.GetCoordValue();
|
|
}
|
|
mWordSpacing += mLetterSpacing; // bug 1046
|
|
|
|
mNumSpacesToRender = 0;
|
|
mNumSpacesToMeasure = 0;
|
|
mNumSpacesReceivingExtraJot = 0;
|
|
mExtraSpacePerSpace = 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_RELEASE(mNormalFont);
|
|
NS_IF_RELEASE(mSmallFont);
|
|
|
|
mFont = nsnull;
|
|
mText = nsnull;
|
|
mColor = nsnull;
|
|
mNormalFont = nsnull;
|
|
mSmallFont = nsnull;
|
|
mLastFont = nsnull;
|
|
|
|
}
|
|
};
|
|
|
|
struct TextReflowData {
|
|
PRInt32 mX; // OUT
|
|
PRInt32 mOffset; // IN/OUT How far along we are in the content
|
|
nscoord mMaxWordWidth; // OUT
|
|
PRPackedBool mWrapping; // IN
|
|
PRPackedBool mSkipWhitespace; // IN
|
|
PRPackedBool mMeasureText; // IN
|
|
PRPackedBool mInWord; // IN
|
|
PRPackedBool mFirstLetterOK; // IN
|
|
PRPackedBool mIsBreakable; // IN
|
|
PRPackedBool mComputeMaxWordWidth; // IN
|
|
|
|
TextReflowData(PRInt32 aStartingOffset,
|
|
PRBool aWrapping,
|
|
PRBool aSkipWhitespace,
|
|
PRBool aMeasureText,
|
|
PRBool aInWord,
|
|
PRBool aFirstLetterOK,
|
|
PRBool aIsBreakable,
|
|
PRBool aComputeMaxWordWidth)
|
|
: mX(0),
|
|
mOffset(aStartingOffset),
|
|
mMaxWordWidth(0),
|
|
mWrapping(aWrapping),
|
|
mSkipWhitespace(aSkipWhitespace),
|
|
mMeasureText(aMeasureText),
|
|
mInWord(aInWord),
|
|
mFirstLetterOK(aFirstLetterOK),
|
|
mIsBreakable(aIsBreakable),
|
|
mComputeMaxWordWidth(aComputeMaxWordWidth)
|
|
{}
|
|
};
|
|
|
|
nsIDocument* GetDocument(nsIPresContext* aPresContext);
|
|
|
|
PRIntn PrepareUnicodeText(nsTextTransformer& aTransformer,
|
|
nsAutoIndexBuffer* aIndexBuffer,
|
|
nsAutoTextBuffer* aTextBuffer,
|
|
PRInt32* aTextLen);
|
|
void ComputeExtraJustificationSpacing(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength, PRInt32 aNumSpaces);
|
|
|
|
void PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aStyle,
|
|
nscoord aX, nscoord aY, nscoord aWidth,
|
|
PRUnichar* aText = nsnull,
|
|
SelectionDetails *aDetails = nsnull,
|
|
PRUint32 aIndex = 0,
|
|
PRUint32 aLength = 0,
|
|
const nscoord* aSpacing = nsnull);
|
|
|
|
void PaintTextSlowly(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aStyle,
|
|
nscoord aX, nscoord aY);
|
|
|
|
void RenderString(nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord aX, nscoord aY,
|
|
nscoord aWidth,
|
|
SelectionDetails *aDetails = nsnull);
|
|
|
|
void MeasureSmallCapsText(const nsHTMLReflowState& aReflowState,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aWord,
|
|
PRInt32 aWordLength,
|
|
nscoord* aWidthResult);
|
|
|
|
nsReflowStatus MeasureText(nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsTextTransformer& aTx,
|
|
nsILineBreaker* aLb,
|
|
TextStyle& aTs,
|
|
TextReflowData& aTextData);
|
|
|
|
void GetWidth(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord* aWidthResult);
|
|
|
|
//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,
|
|
nscoord aWidth);
|
|
|
|
PRBool IsTextInSelection(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext);
|
|
|
|
nsresult GetTextInfoForPainting(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIPresShell** aPresShell,
|
|
nsISelectionController** aSelectionController,
|
|
PRBool& aDisplayingSelection,
|
|
PRBool& aIsPaginated,
|
|
PRBool& aIsSelected,
|
|
PRInt16& aSelectionValue,
|
|
nsILineBreaker** aLineBreaker);
|
|
|
|
void PaintUnicodeText(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aStyle,
|
|
nscoord dx, nscoord dy);
|
|
|
|
void PaintAsciiText(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aStyle,
|
|
nscoord dx, nscoord dy);
|
|
|
|
nscoord ComputeTotalWordWidth(nsIPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
nscoord aBaseWidth,
|
|
PRUnichar* aWordBuf,
|
|
PRUint32 aWordBufLen,
|
|
PRUint32 aWordBufSize);
|
|
|
|
nscoord ComputeWordFragmentWidth(nsIPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
nsIContent* aContent,
|
|
nsITextContent* aText,
|
|
PRBool* aStop,
|
|
const PRUnichar* aWordBuf,
|
|
PRUint32 &aWordBufLen,
|
|
PRUint32 aWordBufSize);
|
|
|
|
void ToCString(nsString& aBuf, PRInt32* aTotalContentLength) const;
|
|
|
|
protected:
|
|
virtual ~nsTextFrame();
|
|
|
|
nsIFrame* mNextInFlow;
|
|
PRInt32 mContentOffset;
|
|
PRInt32 mContentLength;
|
|
PRInt32 mColumn;
|
|
//factored out method for getwidth and getlengthslowly. if aGetWidth is non-zero number then measure to that width and return the length. else shove total width into result
|
|
PRInt32 GetWidthOrLength(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord* aWidthResult,
|
|
PRBool aGetWidth/* true=get width false = return length up to aWidthResult size*/);
|
|
nsresult GetContentAndOffsetsForSelection(nsIPresContext* aPresContext,nsIContent **aContent, PRInt32 *aOffset, PRInt32 *aLength);
|
|
|
|
};
|
|
|
|
class nsContinuingTextFrame : public nsTextFrame {
|
|
public:
|
|
NS_IMETHOD Init(nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow);
|
|
|
|
NS_IMETHOD GetPrevInFlow(nsIFrame** aPrevInFlow) const {
|
|
*aPrevInFlow = mPrevInFlow;
|
|
return NS_OK;
|
|
}
|
|
NS_IMETHOD SetPrevInFlow(nsIFrame* aPrevInFlow) {
|
|
mPrevInFlow = aPrevInFlow;
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
|
|
#endif
|
|
|
|
protected:
|
|
nsIFrame* mPrevInFlow;
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
nsContinuingTextFrame::Init(nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
nsresult rv;
|
|
|
|
rv = nsTextFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow);
|
|
|
|
if (aPrevInFlow) {
|
|
// Hook the frame into the flow
|
|
mPrevInFlow = aPrevInFlow;
|
|
aPrevInFlow->SetNextInFlow(this);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsContinuingTextFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
if (!aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aResult = sizeof(*this);
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
|
|
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 {DISABLED_COLOR = NS_RGB(176,176,176)};
|
|
enum {SELECTION_TYPES_WE_CARE_ABOUT=nsISelectionController::SELECTION_NONE+nsISelectionController::SELECTION_NORMAL};
|
|
public:
|
|
DrawSelectionIterator(const SelectionDetails *aSelDetails, PRUnichar *aText,
|
|
PRUint32 aTextLength, nsTextFrame::TextStyle &aTextStyle,
|
|
PRInt16 aSelectionStatus);
|
|
~DrawSelectionIterator();
|
|
PRBool First();
|
|
PRBool Next();
|
|
PRBool IsDone();
|
|
|
|
PRUnichar * CurrentTextUnicharPtr();
|
|
char * CurrentTextCStrPtr();
|
|
PRUint32 CurrentLength();
|
|
nsTextFrame::TextStyle & CurrentStyle();
|
|
nscolor CurrentForeGroundColor();
|
|
PRBool CurrentBackGroundColor(nscolor &aColor);
|
|
PRBool IsBeforeOrAfter();
|
|
private:
|
|
union {
|
|
PRUnichar *mUniStr;
|
|
char *mCStr;
|
|
};
|
|
PRUint32 mLength;
|
|
PRUint32 mCurrentIdx;
|
|
PRUint32 mCurrentLength;
|
|
nsTextFrame::TextStyle &mOldStyle;//base new styles on this one???
|
|
const SelectionDetails *mDetails;
|
|
PRBool mDone;
|
|
PRUint8 * mTypes;
|
|
PRBool mInit;
|
|
PRInt16 mSelectionStatus;//see nsIDocument.h SetDisplaySelection()
|
|
nscolor mDisabledColor;
|
|
//private methods
|
|
void FillCurrentData();
|
|
};
|
|
|
|
DrawSelectionIterator::DrawSelectionIterator(const SelectionDetails *aSelDetails, PRUnichar *aText,
|
|
PRUint32 aTextLength, nsTextFrame::TextStyle &aTextStyle, PRInt16 aSelectionStatus)
|
|
:mOldStyle(aTextStyle)
|
|
{
|
|
mDetails = aSelDetails;
|
|
mCurrentIdx = 0;
|
|
mUniStr = aText;
|
|
mLength = aTextLength;
|
|
mTypes = nsnull;
|
|
mInit = PR_FALSE;
|
|
mSelectionStatus = aSelectionStatus;
|
|
mDisabledColor = EnsureDifferentColors(DISABLED_COLOR, 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;
|
|
if (!mTypes)
|
|
{
|
|
mCurrentIdx+=mCurrentLength;
|
|
if (mCurrentIdx >= mLength)
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
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
|
|
{
|
|
mCurrentIdx+=mCurrentLength;//advance to this chunk
|
|
if (mCurrentIdx >= mLength)
|
|
{
|
|
mDone = PR_TRUE;
|
|
return;
|
|
}
|
|
uint8 typevalue = mTypes[mCurrentIdx];
|
|
while (typevalue == mTypes[mCurrentIdx+mCurrentLength] && (mCurrentIdx+mCurrentLength) <mLength)
|
|
{
|
|
mCurrentLength++;
|
|
}
|
|
}
|
|
}
|
|
|
|
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::IsDone()
|
|
{
|
|
return mDone || !mInit;
|
|
}
|
|
|
|
|
|
PRUnichar *
|
|
DrawSelectionIterator::CurrentTextUnicharPtr()
|
|
{
|
|
return mUniStr+mCurrentIdx;
|
|
}
|
|
|
|
char *
|
|
DrawSelectionIterator::CurrentTextCStrPtr()
|
|
{
|
|
return mCStr+mCurrentIdx;
|
|
}
|
|
|
|
PRUint32
|
|
DrawSelectionIterator::CurrentLength()
|
|
{
|
|
return mCurrentLength;
|
|
}
|
|
|
|
nsTextFrame::TextStyle &
|
|
DrawSelectionIterator::CurrentStyle()
|
|
{
|
|
return mOldStyle;
|
|
}
|
|
|
|
nscolor
|
|
DrawSelectionIterator::CurrentForeGroundColor()
|
|
{
|
|
nscolor foreColor;
|
|
PRBool colorSet = PR_FALSE;
|
|
|
|
if (!mTypes)
|
|
{
|
|
if (mCurrentIdx == (PRUint32)mDetails->mStart)
|
|
{
|
|
foreColor = mOldStyle.mSelectionTextColor;
|
|
colorSet = PR_TRUE;
|
|
}
|
|
}
|
|
else if (mTypes[mCurrentIdx] | nsISelectionController::SELECTION_NORMAL)//Find color based on mTypes[mCurrentIdx];
|
|
{
|
|
foreColor = mOldStyle.mSelectionTextColor;
|
|
colorSet = PR_TRUE;
|
|
}
|
|
|
|
if (colorSet && (foreColor != NS_DONT_CHANGE_COLOR))
|
|
return foreColor;
|
|
|
|
return mOldStyle.mColor->mColor;
|
|
}
|
|
|
|
PRBool
|
|
DrawSelectionIterator::CurrentBackGroundColor(nscolor &aColor)
|
|
{
|
|
//Find color based on mTypes[mCurrentIdx];
|
|
if (!mTypes)
|
|
{
|
|
if (mCurrentIdx == (PRUint32)mDetails->mStart)
|
|
{
|
|
aColor = (mSelectionStatus==nsISelectionController::SELECTION_ON)?mOldStyle.mSelectionBGColor:mDisabledColor;
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
else if (mTypes[mCurrentIdx] | nsISelectionController::SELECTION_NORMAL)
|
|
{
|
|
aColor = (mSelectionStatus==nsISelectionController::SELECTION_ON)?mOldStyle.mSelectionBGColor:mDisabledColor;
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
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
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
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(nsIPresContext* aPresContext)
|
|
{
|
|
nsIDocument* result = nsnull;
|
|
if (mContent) {
|
|
mContent->GetDocument(result);
|
|
}
|
|
if (!result && aPresContext) {
|
|
nsIPresShell* shell;
|
|
aPresContext->GetShell(&shell);
|
|
if (shell) {
|
|
shell->GetDocument(&result);
|
|
NS_RELEASE(shell);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetCursor(nsIPresContext* aPresContext,
|
|
nsPoint& aPoint,
|
|
PRInt32& aCursor)
|
|
{
|
|
const nsStyleColor* styleColor;
|
|
GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&)styleColor);
|
|
aCursor = styleColor->mCursor;
|
|
|
|
if (NS_STYLE_CURSOR_AUTO == aCursor && nsnull != mParent) {
|
|
mParent->GetCursor(aPresContext, aPoint, aCursor);
|
|
if (NS_STYLE_CURSOR_AUTO == aCursor) {
|
|
aCursor = NS_STYLE_CURSOR_TEXT;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsIFrame*
|
|
GetLastInFlow(nsIFrame* aFrame)
|
|
{
|
|
nsIFrame* lastInFlow;
|
|
nsIFrame* nextInFlow = aFrame;
|
|
while (nsnull!=nextInFlow) {
|
|
lastInFlow = nextInFlow;
|
|
lastInFlow->GetNextInFlow(&nextInFlow);
|
|
}
|
|
NS_POSTCONDITION(nsnull!=lastInFlow, "illegal state in flow chain.");
|
|
return lastInFlow;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::ContentChanged(nsIPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
nsISupports* aSubContent)
|
|
{
|
|
nsIFrame* targetTextFrame = this;
|
|
|
|
PRBool markAllDirty = PR_TRUE;
|
|
if (aSubContent) {
|
|
nsCOMPtr<nsITextContentChangeData> tccd = do_QueryInterface(aSubContent);
|
|
if (tccd) {
|
|
nsITextContentChangeData::ChangeType type;
|
|
tccd->GetChangeType(&type);
|
|
if (nsITextContentChangeData::Append == type) {
|
|
markAllDirty = PR_FALSE;
|
|
nsTextFrame* frame = (nsTextFrame*)::GetLastInFlow(this);
|
|
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;
|
|
while (textFrame) {
|
|
textFrame->mState |= NS_FRAME_IS_DIRTY;
|
|
textFrame = (nsTextFrame*)textFrame->mNextInFlow;
|
|
}
|
|
}
|
|
|
|
// Ask the parent frame to reflow me.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
rv = aPresContext->GetShell(getter_AddRefs(shell));
|
|
if (NS_SUCCEEDED(rv) && shell && mParent) {
|
|
mParent->ReflowDirtyChild(shell, targetTextFrame);
|
|
}
|
|
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
if (NS_FRAME_PAINT_LAYER_FOREGROUND != aWhichLayer) {
|
|
return NS_OK;
|
|
}
|
|
if ((0 != (mState & TEXT_BLINK_ON)) && nsBlinkTimer::GetBlinkIsOff()) {
|
|
return NS_OK;
|
|
}
|
|
nsIStyleContext* sc = mStyleContext;
|
|
PRBool isVisible;
|
|
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) && isVisible) {
|
|
TextStyle 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.get()) {
|
|
tc->GetText(&frag);
|
|
}
|
|
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);
|
|
|
|
// If we have ascii text that doesn't contain multi-byte characters
|
|
// and the text doesn't need transforming then always render as ascii
|
|
if ((0 == (mState & TEXT_WAS_TRANSFORMED)) && !frag->Is2b() && !hasMultiByteChars) {
|
|
PaintAsciiText(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
|
|
} else if (hasMultiByteChars || (0 == (hints & NS_RENDERING_HINT_FAST_8BIT_TEXT))) {
|
|
// If it has multi-byte characters then we have to render it as Unicode
|
|
// regardless of whether the text fragment is 1-byte or 2-byte characters.
|
|
// Or if the text fragment requires transforming then leave it up to the
|
|
// rendering context's preference
|
|
PaintUnicodeText(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
}
|
|
else {
|
|
// Use char rendering routine
|
|
PaintAsciiText(aPresContext, aRenderingContext, sc, ts, 0, 0);
|
|
}
|
|
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
PRIntn
|
|
nsTextFrame::PrepareUnicodeText(nsTextTransformer& aTX,
|
|
nsAutoIndexBuffer* aIndexBuffer,
|
|
nsAutoTextBuffer* aTextBuffer,
|
|
PRInt32* aTextLen)
|
|
{
|
|
PRIntn numSpaces = 0;
|
|
|
|
// Setup transform to operate starting in the content at our content
|
|
// offset
|
|
aTX.Init(this, mContent, mContentOffset);
|
|
|
|
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;
|
|
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.
|
|
PRBool inWord = (TEXT_IN_WORD & mState) ? PR_TRUE : PR_FALSE;
|
|
PRInt32 column = mColumn;
|
|
PRInt32 textLength = 0;
|
|
PRInt32 dstOffset = 0;
|
|
while (0 != n) {
|
|
PRUnichar* bp;
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
|
|
// Get the next word
|
|
bp = aTX.GetNextWord(inWord, &wordLen, &contentLen, &isWhitespace, &wasTransformed);
|
|
if (nsnull == bp) {
|
|
break;
|
|
}
|
|
if (contentLen > n) {
|
|
contentLen = n;
|
|
}
|
|
if (wordLen > n) {
|
|
wordLen = n;
|
|
}
|
|
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++;
|
|
}
|
|
}
|
|
}
|
|
numSpaces += wordLen;
|
|
}
|
|
else {
|
|
PRInt32 i;
|
|
if (nsnull != indexp) {
|
|
// Point mapping indicies at each content index in the word
|
|
i = contentLen;
|
|
while (--i >= 0) {
|
|
*indexp++ = strInx++;
|
|
}
|
|
}
|
|
// Nonbreaking spaces count as spaces, not letters
|
|
PRUnichar* tp = bp;
|
|
i = wordLen;
|
|
while (--i >= 0) {
|
|
if (*tp++ == ' ') {
|
|
numSpaces++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Grow the buffer before we run out of room. The only time this
|
|
// happens is because of tab expansion.
|
|
if (aTextBuffer != nsnull && dstOffset + wordLen > aTextBuffer->mBufferLen) {
|
|
nsresult rv = aTextBuffer->GrowBy(wordLen);
|
|
if (NS_FAILED(rv)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
column += wordLen;
|
|
textLength += wordLen;
|
|
n -= contentLen;
|
|
if (aTextBuffer != nsnull) {
|
|
nsCRT::memcpy(aTextBuffer->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 (aTextBuffer) {
|
|
NS_ASSERTION(dstOffset <= aTextBuffer->mBufferLen,
|
|
"yikes - we just overwrote memory");
|
|
}
|
|
|
|
#endif
|
|
|
|
// Remove trailing whitespace if it was trimmed after reflow
|
|
if (TEXT_TRIMMED_WS & mState) {
|
|
NS_ASSERTION(aTextBuffer != nsnull,
|
|
"Nonexistent text buffer should only occur during reflow, i.e. before whitespace is trimmed");
|
|
if (--dstOffset >= 0) {
|
|
PRUnichar ch = aTextBuffer->mBuffer[dstOffset];
|
|
if (XP_IS_SPACE(ch)) {
|
|
textLength--;
|
|
numSpaces--;
|
|
}
|
|
}
|
|
}
|
|
|
|
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]++;
|
|
}
|
|
}
|
|
|
|
*aTextLen = textLength;
|
|
return numSpaces;
|
|
}
|
|
|
|
|
|
//#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_PC) || defined(XP_UNIX) || defined(XP_MAC)
|
|
#define USE_INVERT_FOR_SELECTION
|
|
#endif
|
|
|
|
// XXX we should get the following from style sheet or LookAndFeel later
|
|
#define IME_RAW_COLOR NS_RGB(198,33,66)
|
|
#define IME_CONVERTED_COLOR NS_RGB(255,198,198)
|
|
|
|
void
|
|
nsTextFrame::PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aTextStyle,
|
|
nscoord aX, nscoord aY, nscoord aWidth,
|
|
PRUnichar *aText, /*=nsnull*/
|
|
SelectionDetails *aDetails,/*= nsnull*/
|
|
PRUint32 aIndex, /*= 0*/
|
|
PRUint32 aLength, /*= 0*/
|
|
const nscoord* aSpacing /* = nsnull*/ )
|
|
|
|
{
|
|
nscolor overColor;
|
|
nscolor underColor;
|
|
nscolor strikeColor;
|
|
nsIStyleContext* context = aStyleContext;
|
|
PRUint8 decorations = aTextStyle.mFont->mFont.decorations;
|
|
PRUint8 decorMask = decorations;
|
|
|
|
NS_ADDREF(context);
|
|
do { // find decoration colors
|
|
const nsStyleText* styleText =
|
|
(const nsStyleText*)context->GetStyleData(eStyleStruct_Text);
|
|
if (decorMask & styleText->mTextDecoration) { // a decoration defined here
|
|
const nsStyleColor* styleColor =
|
|
(const nsStyleColor*)context->GetStyleData(eStyleStruct_Color);
|
|
if (NS_STYLE_TEXT_DECORATION_UNDERLINE & decorMask & styleText->mTextDecoration) {
|
|
underColor = styleColor->mColor;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_OVERLINE & decorMask & styleText->mTextDecoration) {
|
|
overColor = styleColor->mColor;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_LINE_THROUGH & decorMask & styleText->mTextDecoration) {
|
|
strikeColor = styleColor->mColor;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
}
|
|
}
|
|
if (0 != decorMask) {
|
|
nsIStyleContext* lastContext = context;
|
|
context = context->GetParent();
|
|
NS_RELEASE(lastContext);
|
|
}
|
|
} while ((nsnull != context) && (0 != decorMask));
|
|
NS_IF_RELEASE(context);
|
|
|
|
nscoord offset;
|
|
nscoord size;
|
|
nscoord baseline;
|
|
aTextStyle.mNormalFont->GetMaxAscent(baseline);
|
|
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(rect);
|
|
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);
|
|
|
|
}
|
|
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.SetColor(NS_RGB(255,0,0));
|
|
aRenderingContext.FillRect(aX + startOffset, aY + baseline - offset, textWidth, size);
|
|
}break;
|
|
case nsISelectionController::SELECTION_IME_SELECTEDRAWTEXT:{
|
|
#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:{
|
|
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:{
|
|
#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:{
|
|
aTextStyle.mNormalFont->GetUnderline(offset, size);
|
|
aRenderingContext.SetColor(IME_CONVERTED_COLOR);
|
|
aRenderingContext.FillRect(aX + startOffset+size, aY + baseline - offset, textWidth-2*size, size);
|
|
}break;
|
|
default:
|
|
NS_ASSERTION(0,"what type of selection do i not know about?");
|
|
break;
|
|
}
|
|
|
|
}
|
|
}
|
|
aDetails = aDetails->mNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
nsTextFrame::GetContentAndOffsetsForSelection(nsIPresContext *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;
|
|
nsresult rv = GetParent(&parent);
|
|
if (NS_SUCCEEDED(rv) && parent)
|
|
{
|
|
nsFrameState parentFrameState;
|
|
|
|
parent->GetFrameState(&parentFrameState);
|
|
if ((parentFrameState & 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
|
|
rv = parent->GetContent(aContent);
|
|
if (NS_FAILED(rv) || !*aContent)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
|
|
//ARE WE A BEFORE FRAME? if not then we assume we are an after frame. this may be bad later
|
|
nsIFrame *grandParent;
|
|
nsIFrame *firstParent;
|
|
rv = parent->GetParent(&grandParent);
|
|
if (NS_SUCCEEDED(rv) && grandParent)
|
|
{
|
|
rv = grandParent->FirstChild(aPresContext,nsnull, &firstParent);
|
|
if (NS_SUCCEEDED(rv) && firstParent)
|
|
{
|
|
*aLength = 0;
|
|
if (firstParent == parent) //then our parent is the first child of granddad. use BEFORE
|
|
{
|
|
*aOffset = 0;
|
|
}
|
|
else
|
|
{
|
|
PRInt32 numChildren;
|
|
if (NS_SUCCEEDED(rv = (*aContent)->ChildCount(numChildren)))
|
|
*aOffset = numChildren;
|
|
else
|
|
return rv;
|
|
}
|
|
}
|
|
else
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
//END GENERATED BLOCK
|
|
if (!*aContent)
|
|
{
|
|
*aContent = mContent;
|
|
NS_IF_ADDREF(*aContent);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
nsresult nsTextFrame::GetTextInfoForPainting(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIPresShell** aPresShell,
|
|
nsISelectionController** aSelectionController,
|
|
PRBool& aDisplayingSelection,
|
|
PRBool& aIsPaginated,
|
|
PRBool& aIsSelected,
|
|
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
|
|
nsresult rv = aPresContext->GetShell(aPresShell);
|
|
if (NS_FAILED(rv) || (*aPresShell) == nsnull)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
//get the selection controller
|
|
rv = GetSelectionController(aPresContext, aSelectionController);
|
|
if (NS_FAILED(rv) || !(*aSelectionController))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
aPresContext->IsPaginated(&aIsPaginated);
|
|
PRBool isRenderingOnlySelection;
|
|
aPresContext->IsRenderingOnlySelection(&isRenderingOnlySelection);
|
|
|
|
(*aSelectionController)->GetDisplaySelection(&aSelectionValue);
|
|
//if greater than hidden then we display some kind of selection
|
|
aDisplayingSelection = (aSelectionValue > nsISelectionController::SELECTION_HIDDEN) ||
|
|
(aIsPaginated && isRenderingOnlySelection);
|
|
|
|
// Transform text from content into renderable form
|
|
// XXX If the text fragment is already Unicode and text 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()...
|
|
nsCOMPtr<nsIDocument> doc;
|
|
(*aPresShell)->GetDocument(getter_AddRefs(doc));
|
|
if (!doc)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
doc->GetLineBreaker(aLineBreaker);
|
|
|
|
nsFrameState frameState;
|
|
GetFrameState(&frameState);
|
|
aIsSelected = (frameState & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsTextFrame::IsTextInSelection(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
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;
|
|
}
|
|
TextStyle ts(aPresContext, aRenderingContext, mStyleContext);
|
|
|
|
// Transform text from content into renderable form
|
|
// XXX If the text fragment is already Unicode and text 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;
|
|
|
|
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)
|
|
rv = shell->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
|
|
if (NS_SUCCEEDED(rv) && 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(details,text,(PRUint32)textLength, ts, nsISelectionController::SELECTION_NORMAL);
|
|
if (!iter.IsDone() && iter.First()) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
sdptr = details;
|
|
if (details) {
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::IsVisibleForPainting(nsIPresContext * aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
PRBool aCheckVis,
|
|
PRBool* aIsVisible)
|
|
{
|
|
if (aCheckVis) {
|
|
nsIStyleContext* sc = mStyleContext;
|
|
const nsStyleDisplay* disp = (const nsStyleDisplay*)sc->GetStyleData(eStyleStruct_Display);
|
|
if (!disp->IsVisible()) {
|
|
*aIsVisible = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Start by assuming we are visible and need to be painted
|
|
PRBool isVisible = PR_TRUE;
|
|
|
|
PRBool isPaginated;
|
|
aPresContext->IsPaginated(&isPaginated);
|
|
if (isPaginated) {
|
|
PRBool isRendingSelection;
|
|
aPresContext->IsRenderingOnlySelection(&isRendingSelection);
|
|
if (isRendingSelection) {
|
|
// 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(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
// 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 text 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)
|
|
{
|
|
if (!displaySelection || !isSelected ) //draw text normally
|
|
{
|
|
// When there is no selection showing, use the fastest and
|
|
// simplest rendering approach
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy);
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aTextStyle,
|
|
dx, dy, width);
|
|
}
|
|
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)
|
|
rv = shell->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
if (NS_SUCCEEDED(rv) && 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(details,text,(PRUint32)textLength,aTextStyle, selectionValue);
|
|
if (!iter.IsDone() && iter.First())
|
|
{
|
|
nscoord currentX = dx;
|
|
nscoord newWidth;//temp
|
|
while (!iter.IsDone())
|
|
{
|
|
PRUnichar *currenttext = iter.CurrentTextUnicharPtr();
|
|
PRUint32 currentlength= iter.CurrentLength();
|
|
//TextStyle ¤tStyle = iter.CurrentStyle();
|
|
nscolor currentFGColor = iter.CurrentForeGroundColor();
|
|
nscolor currentBKColor;
|
|
|
|
if (NS_SUCCEEDED(aRenderingContext.GetWidth(currenttext, currentlength,newWidth)))//ADJUST FOR CHAR SPACING
|
|
{
|
|
if (iter.CurrentBackGroundColor(currentBKColor) && !isPaginated)
|
|
{//DRAW RECT HERE!!!
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newWidth, mRect.height);
|
|
currentFGColor = EnsureDifferentColors(currentFGColor, currentBKColor);
|
|
}
|
|
}
|
|
else
|
|
newWidth =0;
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(currenttext, currentlength, currentX, dy);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(currentFGColor);
|
|
aRenderingContext.DrawString(currenttext, currentlength, currentX, dy);
|
|
}
|
|
|
|
currentX+=newWidth;//increment twips X start
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy);
|
|
}
|
|
PaintTextDecorations(aRenderingContext, aStyleContext,
|
|
aTextStyle, dx, dy, width, text, details,0,(PRUint32)textLength);
|
|
sdptr = details;
|
|
if (details){
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//measure Spaced Textvoid
|
|
nsresult
|
|
nsTextFrame::GetPositionSlowly(nsIPresContext* 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(aPresContext, 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;
|
|
}
|
|
nsCOMPtr<nsIDocument> doc(getter_AddRefs(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
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
PRInt32 numSpaces;
|
|
|
|
numSpaces = PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
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;
|
|
}
|
|
|
|
ComputeExtraJustificationSpacing(*aRendContext, ts, paintBuffer.mBuffer, textLength, numSpaces);
|
|
|
|
//IF STYLE SAYS TO SELECT TO END OF FRAME HERE...
|
|
nsCOMPtr<nsIPref> prefs( do_GetService(kPrefCID, &rv) );
|
|
PRInt32 prefInt = 0;
|
|
PRBool outofstylehandled = PR_FALSE;
|
|
if (NS_SUCCEEDED(rv) && prefs)
|
|
{
|
|
if (NS_SUCCEEDED(prefs->GetIntPref("browser.drag_out_of_frame_style", &prefInt)) && prefInt)
|
|
{
|
|
nsRect bounds(mRect);
|
|
|
|
bounds.MoveBy(origin.x, origin.y);
|
|
if (aPoint.y < bounds.y)//above rectangle
|
|
{
|
|
aOffset = mContentOffset;
|
|
outofstylehandled = PR_TRUE;
|
|
}
|
|
else if (aPoint.y > (bounds.y + bounds.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);
|
|
|
|
aOffset = mContentOffset+GetLengthSlowly(*aRendContext, ts,paintBuffer.mBuffer,textLength,adjustedX);
|
|
PRInt32 i;
|
|
for (i = 0;i <= mContentLength; i ++){
|
|
if (indexBuffer.mBuffer[i] >= aOffset){ //reverse mapping
|
|
aOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
*aNewContent = mContent;
|
|
if (*aNewContent)
|
|
(*aNewContent)->AddRef();
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsTextFrame::RenderString(nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord aX, nscoord aY,
|
|
nscoord aWidth,
|
|
SelectionDetails *aDetails /*=nsnull*/)
|
|
{
|
|
PRUnichar buf[TEXT_BUF_SIZE];
|
|
PRUnichar* bp0 = buf;
|
|
if (aLength > TEXT_BUF_SIZE) {
|
|
bp0 = new PRUnichar[aLength];
|
|
}
|
|
PRUnichar* bp = bp0;
|
|
|
|
PRBool spacing = (0 != aTextStyle.mLetterSpacing) ||
|
|
(0 != aTextStyle.mWordSpacing) || aTextStyle.mJustifying;
|
|
nscoord spacingMem[TEXT_BUF_SIZE];
|
|
PRIntn* sp0 = spacingMem;
|
|
if (spacing && (aLength > TEXT_BUF_SIZE)) {
|
|
sp0 = new nscoord[aLength];
|
|
}
|
|
PRIntn* sp = sp0;
|
|
|
|
nscoord smallY = aY;
|
|
if (aTextStyle.mSmallCaps) {
|
|
nscoord normalAscent, smallAscent;
|
|
aTextStyle.mNormalFont->GetMaxAscent(normalAscent);
|
|
aTextStyle.mSmallFont->GetMaxAscent(smallAscent);
|
|
if (normalAscent > smallAscent) {
|
|
smallY = aY + normalAscent - smallAscent;
|
|
}
|
|
}
|
|
|
|
nsIFontMetrics* lastFont = aTextStyle.mLastFont;
|
|
nscoord lastY = aY;
|
|
if (lastFont == aTextStyle.mSmallFont) {
|
|
lastY = smallY;
|
|
}
|
|
PRInt32 pendingCount;
|
|
PRUnichar* runStart = bp;
|
|
nscoord charWidth, width = 0;
|
|
PRInt32 countSoFar = 0;
|
|
for (; --aLength >= 0; aBuffer++) {
|
|
nsIFontMetrics* nextFont;
|
|
nscoord nextY, glyphWidth;
|
|
PRUnichar ch = *aBuffer;
|
|
if (aTextStyle.mSmallCaps && nsCRT::IsLower(ch)) {
|
|
nextFont = aTextStyle.mSmallFont;
|
|
nextY = smallY;
|
|
ch = nsCRT::ToUpper(ch);
|
|
if (lastFont != aTextStyle.mSmallFont) {
|
|
aRenderingContext.SetFont(aTextStyle.mSmallFont);
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
aRenderingContext.SetFont(aTextStyle.mNormalFont);
|
|
}
|
|
else {
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
}
|
|
glyphWidth = charWidth + aTextStyle.mLetterSpacing;
|
|
}
|
|
else if (ch == ' ') {
|
|
nextFont = aTextStyle.mNormalFont;
|
|
nextY = aY;
|
|
glyphWidth = aTextStyle.mSpaceWidth + aTextStyle.mWordSpacing
|
|
+ aTextStyle.mExtraSpacePerSpace;
|
|
if ((PRUint32)--aTextStyle.mNumSpacesToRender <
|
|
(PRUint32)aTextStyle.mNumSpacesReceivingExtraJot) {
|
|
glyphWidth++;
|
|
}
|
|
}
|
|
else {
|
|
if (lastFont != aTextStyle.mNormalFont) {
|
|
aRenderingContext.SetFont(aTextStyle.mNormalFont);
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
aRenderingContext.SetFont(aTextStyle.mSmallFont);
|
|
}
|
|
else {
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
}
|
|
nextFont = aTextStyle.mNormalFont;
|
|
nextY = aY;
|
|
glyphWidth = charWidth + aTextStyle.mLetterSpacing;
|
|
}
|
|
if (nextFont != lastFont) {
|
|
pendingCount = bp - runStart;
|
|
if (0 != pendingCount) {
|
|
// Measure previous run of characters using the previous font
|
|
//aRenderingContext.SetColor(aTextStyle.mColor->mColor); commenting out redundat(and destructive) call to setcolor
|
|
aRenderingContext.DrawString(runStart, pendingCount,
|
|
aX, lastY, -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, aTextStyle,
|
|
aX, aY, width, 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;
|
|
lastY = nextY;
|
|
}
|
|
*bp++ = ch;
|
|
*sp++ = glyphWidth;
|
|
width += glyphWidth;
|
|
}
|
|
pendingCount = bp - runStart;
|
|
if (0 != pendingCount) {
|
|
// Measure previous run of characters using the previous font
|
|
aRenderingContext.DrawString(runStart, pendingCount, aX, lastY, -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, aTextStyle,
|
|
aX, aY, aWidth, 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,
|
|
nscoord* aWidthResult)
|
|
{
|
|
nsIRenderingContext& rc = *aReflowState.rendContext;
|
|
*aWidthResult = 0;
|
|
GetWidth(rc, aTextStyle, aWord, aWordLength, aWidthResult);
|
|
if (aTextStyle.mLastFont != aTextStyle.mNormalFont) {
|
|
rc.SetFont(aTextStyle.mNormalFont);
|
|
aTextStyle.mLastFont = aTextStyle.mNormalFont;
|
|
}
|
|
}
|
|
|
|
|
|
PRInt32
|
|
nsTextFrame::GetWidthOrLength(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord* aWidthResult,
|
|
PRBool aGetWidth/* true=get width false = return length up to aWidthResult size*/)
|
|
{
|
|
PRUnichar *inBuffer = aBuffer;
|
|
PRInt32 length = aLength;
|
|
nsAutoTextBuffer widthBuffer;
|
|
if (NS_FAILED(widthBuffer.GrowTo(length))) {
|
|
*aWidthResult = 0;
|
|
return 0;
|
|
}
|
|
PRUnichar* bp = widthBuffer.mBuffer;
|
|
|
|
nsIFontMetrics* lastFont = aStyle.mLastFont;
|
|
nscoord sum = 0;
|
|
nscoord charWidth;
|
|
while (--length >= 0) {
|
|
nscoord glyphWidth;
|
|
PRUnichar ch = *inBuffer++;
|
|
if (aStyle.mSmallCaps && nsCRT::IsLower(ch)) {
|
|
ch = nsCRT::ToUpper(ch);
|
|
if (lastFont != aStyle.mSmallFont) {
|
|
lastFont = aStyle.mSmallFont;
|
|
aRenderingContext.SetFont(lastFont);
|
|
}
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
glyphWidth = charWidth + aStyle.mLetterSpacing;
|
|
}
|
|
else if (ch == ' ') {
|
|
glyphWidth = aStyle.mSpaceWidth + aStyle.mWordSpacing
|
|
+ aStyle.mExtraSpacePerSpace;
|
|
if ((PRUint32)--aStyle.mNumSpacesToMeasure
|
|
< (PRUint32)aStyle.mNumSpacesReceivingExtraJot) {
|
|
glyphWidth++;
|
|
}
|
|
}
|
|
else {
|
|
if (lastFont != aStyle.mNormalFont) {
|
|
lastFont = aStyle.mNormalFont;
|
|
aRenderingContext.SetFont(lastFont);
|
|
}
|
|
aRenderingContext.GetWidth(ch, charWidth);
|
|
glyphWidth = charWidth + aStyle.mLetterSpacing;
|
|
}
|
|
sum += glyphWidth;
|
|
*bp++ = ch;
|
|
if (!aGetWidth && sum >= *aWidthResult)
|
|
{
|
|
PRInt32 result = aLength - length;
|
|
if (2*(sum - *aWidthResult) > glyphWidth) //then we have gone too far, back up 1
|
|
result--;
|
|
aStyle.mLastFont = lastFont;
|
|
return result;
|
|
}
|
|
}
|
|
aStyle.mLastFont = lastFont;
|
|
*aWidthResult = sum;
|
|
return aLength;
|
|
}
|
|
|
|
|
|
// XXX factor in logic from RenderString into here; gaps, justification, etc.
|
|
void
|
|
nsTextFrame::GetWidth(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord* aWidthResult)
|
|
{
|
|
GetWidthOrLength(aRenderingContext,aTextStyle,aBuffer,aLength,aWidthResult,PR_TRUE);
|
|
}
|
|
|
|
PRInt32
|
|
nsTextFrame::GetLengthSlowly(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
nscoord aWidth)
|
|
{
|
|
return GetWidthOrLength(aRenderingContext,aStyle,aBuffer,aLength,&aWidth,PR_FALSE);
|
|
}
|
|
|
|
void
|
|
nsTextFrame::ComputeExtraJustificationSpacing(nsIRenderingContext& aRenderingContext,
|
|
TextStyle& aTextStyle,
|
|
PRUnichar* aBuffer, PRInt32 aLength,
|
|
PRInt32 aNumSpaces)
|
|
{
|
|
if (aTextStyle.mJustifying) {
|
|
nscoord trueWidth;
|
|
|
|
// 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
|
|
// spaces. It has to be the same ones every time or things will go haywire.
|
|
// This implies that the GetWidthOrLength 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 spaces
|
|
// 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.mNumSpacesToMeasure = 0;
|
|
aTextStyle.mExtraSpacePerSpace = 0;
|
|
aTextStyle.mNumSpacesReceivingExtraJot = 0;
|
|
|
|
GetWidth(aRenderingContext, aTextStyle, aBuffer, aLength, &trueWidth);
|
|
|
|
aTextStyle.mNumSpacesToMeasure = aNumSpaces;
|
|
aTextStyle.mNumSpacesToRender = aNumSpaces;
|
|
|
|
nscoord extraSpace = mRect.width - trueWidth;
|
|
|
|
if (extraSpace > 0 && aNumSpaces > 0) {
|
|
aTextStyle.mExtraSpacePerSpace = extraSpace/aNumSpaces;
|
|
aTextStyle.mNumSpacesReceivingExtraJot =
|
|
extraSpace - aTextStyle.mExtraSpacePerSpace*aNumSpaces;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsTextFrame::PaintTextSlowly(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
|
|
|
|
// 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);
|
|
PRInt32 numSpaces;
|
|
|
|
numSpaces = PrepareUnicodeText(tx, (displaySelection ? &indexBuffer : nsnull),
|
|
&paintBuffer, &textLength);
|
|
|
|
|
|
PRInt32* ip = indexBuffer.mBuffer;
|
|
PRUnichar* text = paintBuffer.mBuffer;
|
|
|
|
if (0 != textLength) {
|
|
ComputeExtraJustificationSpacing(aRenderingContext, aTextStyle, text, textLength, numSpaces);
|
|
if (!displaySelection || !isSelected) {
|
|
// When there is no selection showing, use the fastest and
|
|
// simplest rendering approach
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
RenderString(aRenderingContext, aStyleContext, aTextStyle,
|
|
text, textLength, 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
|
|
rv = shell->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
if (NS_SUCCEEDED(rv) && 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;
|
|
}
|
|
|
|
DrawSelectionIterator iter(details,text,(PRUint32)textLength,aTextStyle, selectionValue);
|
|
if (!iter.IsDone() && iter.First())
|
|
{
|
|
nscoord currentX = dx;
|
|
nscoord newWidth;//temp
|
|
while (!iter.IsDone())
|
|
{
|
|
PRUnichar *currenttext = iter.CurrentTextUnicharPtr();
|
|
PRUint32 currentlength= iter.CurrentLength();
|
|
//TextStyle ¤tStyle = iter.CurrentStyle();
|
|
nscolor currentFGColor = iter.CurrentForeGroundColor();
|
|
nscolor currentBKColor;
|
|
GetWidth(aRenderingContext,aTextStyle,currenttext, (PRInt32)currentlength,&newWidth);
|
|
if (newWidth)
|
|
{
|
|
if (iter.CurrentBackGroundColor(currentBKColor))
|
|
{//DRAW RECT HERE!!!
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newWidth, mRect.height);
|
|
currentFGColor = EnsureDifferentColors(currentFGColor, currentBKColor);
|
|
}
|
|
}
|
|
else
|
|
newWidth =0;
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
RenderString(aRenderingContext,aStyleContext, aTextStyle, currenttext,
|
|
currentlength, currentX, dy, width, details);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(currentFGColor);
|
|
RenderString(aRenderingContext,aStyleContext, aTextStyle, currenttext,
|
|
currentlength, currentX, dy, width, details);
|
|
}
|
|
|
|
//increment twips X start but remember to get ready for next draw by reducing current x by letter spacing amount
|
|
currentX+=newWidth;// + aTextStyle.mLetterSpacing;
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
RenderString(aRenderingContext,aStyleContext, aTextStyle, text,
|
|
PRUint32(textLength), dx, dy, width, details);
|
|
}
|
|
sdptr = details;
|
|
if (details){
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsTextFrame::PaintAsciiText(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIStyleContext* aStyleContext,
|
|
TextStyle& aTextStyle,
|
|
nscoord dx, nscoord dy)
|
|
{
|
|
NS_PRECONDITION(0 == (TEXT_HAS_MULTIBYTE & mState), "text is multi-byte");
|
|
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
PRBool displaySelection;
|
|
PRBool isPaginated;
|
|
PRBool isSelected;
|
|
PRInt16 selectionValue;
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
if (NS_FAILED(GetTextInfoForPainting(aPresContext,
|
|
aRenderingContext,
|
|
getter_AddRefs(shell),
|
|
getter_AddRefs(selCon),
|
|
displaySelection,
|
|
isPaginated,
|
|
isSelected,
|
|
selectionValue,
|
|
getter_AddRefs(lb)))) {
|
|
return;
|
|
}
|
|
|
|
// Get the text fragment
|
|
nsCOMPtr<nsITextContent> tc = do_QueryInterface(mContent);
|
|
const nsTextFragment* frag = nsnull;
|
|
if (tc.get()) {
|
|
tc->GetText(&frag);
|
|
}
|
|
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;
|
|
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 {
|
|
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");
|
|
}
|
|
|
|
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(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy);
|
|
PaintTextDecorations(aRenderingContext, aStyleContext, aTextStyle,
|
|
dx, dy, width);
|
|
}
|
|
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
|
|
rv = shell->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
if (NS_SUCCEEDED(rv) && 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;
|
|
}
|
|
DrawSelectionIterator iter(details,(PRUnichar *)text,(PRUint32)textLength,aTextStyle, selectionValue);//ITS OK TO CAST HERE THE RESULT WE USE WILLNOT DO BAD CONVERSION
|
|
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 = iter.CurrentForeGroundColor();
|
|
nscolor currentBKColor;
|
|
|
|
if (NS_SUCCEEDED(aRenderingContext.GetWidth(currenttext, currentlength,newWidth)))//ADJUST FOR CHAR SPACING
|
|
{
|
|
if (iter.CurrentBackGroundColor(currentBKColor) && !isPaginated)
|
|
{//DRAW RECT HERE!!!
|
|
aRenderingContext.SetColor(currentBKColor);
|
|
aRenderingContext.FillRect(currentX, dy, newWidth, mRect.height);
|
|
currentFGColor = EnsureDifferentColors(currentFGColor, currentBKColor);
|
|
}
|
|
}
|
|
else
|
|
newWidth =0;
|
|
|
|
if (isPaginated && !iter.IsBeforeOrAfter()) {
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(currenttext, currentlength, currentX, dy);
|
|
} else if (!isPaginated) {
|
|
aRenderingContext.SetColor(currentFGColor);
|
|
aRenderingContext.DrawString(currenttext, currentlength, currentX, dy);
|
|
}
|
|
|
|
currentX+=newWidth;//increment twips X start
|
|
|
|
iter.Next();
|
|
}
|
|
}
|
|
else if (!isPaginated)
|
|
{
|
|
aRenderingContext.SetColor(aTextStyle.mColor->mColor);
|
|
aRenderingContext.DrawString(text, PRUint32(textLength), dx, dy);
|
|
}
|
|
PaintTextDecorations(aRenderingContext, aStyleContext,
|
|
aTextStyle, dx, dy, width,
|
|
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;
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------
|
|
// 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
|
|
static PRBool
|
|
BinarySearchForPosition(nsIRenderingContext* acx,
|
|
PRUnichar* aText,
|
|
PRInt32 aBaseWidth,
|
|
PRInt32 aBaseInx,
|
|
PRInt32 aStartInx,
|
|
PRInt32 aEndInx,
|
|
PRInt32 aCursorPos,
|
|
PRInt32& aIndex,
|
|
PRInt32& aTextWidth)
|
|
{
|
|
PRInt32 range = aEndInx - aStartInx;
|
|
if (range == 1) {
|
|
aIndex = aStartInx + aBaseInx;
|
|
acx->GetWidth(aText, aIndex, aTextWidth);
|
|
return PR_TRUE;
|
|
}
|
|
PRInt32 inx = aStartInx + (range / 2);
|
|
|
|
PRInt32 textWidth = 0;
|
|
acx->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(acx, aText, aBaseWidth, aBaseInx, aStartInx, inx, aCursorPos, aIndex, aTextWidth)) {
|
|
return PR_TRUE;
|
|
}
|
|
} else {
|
|
aTextWidth = fullWidth;
|
|
if (BinarySearchForPosition(acx, 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(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd)
|
|
|
|
{
|
|
// pre-condition tests
|
|
NS_PRECONDITION(aCX && aNewContent, "null arg");
|
|
if (!aCX || !aNewContent) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
// initialize out param
|
|
*aNewContent = nsnull;
|
|
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
nsresult rv = aCX->GetShell(getter_AddRefs(shell));
|
|
if (NS_SUCCEEDED(rv) && shell) {
|
|
nsCOMPtr<nsIRenderingContext> acx;
|
|
rv = shell->CreateRenderingContext(this, getter_AddRefs(acx));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
TextStyle ts(aCX, *acx, mStyleContext);
|
|
if (ts.mSmallCaps || ts.mWordSpacing || ts.mLetterSpacing || ts.mJustifying) {
|
|
nsresult result = GetPositionSlowly(aCX, acx, 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
|
|
nsIStyleContext* styleContext;
|
|
GetStyleContext(&styleContext);
|
|
const nsStyleFont *font = (const nsStyleFont*)
|
|
styleContext->GetStyleData(eStyleStruct_Font);
|
|
NS_RELEASE(styleContext);
|
|
nsCOMPtr<nsIFontMetrics> fm;
|
|
aCX->GetMetricsFor(font->mFont, getter_AddRefs(fm));
|
|
acx->SetFont(fm);
|
|
|
|
// Get the renderable form of the text
|
|
nsCOMPtr<nsIDocument> doc(getter_AddRefs(GetDocument(aCX)));
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
nsTextTransformer tx(lb, nsnull, aCX);
|
|
PRInt32 textLength;
|
|
// no need to worry about justification, that's always on the slow path
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
if (textLength <=0) {
|
|
//invalid frame to get position on
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPoint origin;
|
|
nsIView * view;
|
|
GetOffsetFromView(aCX, origin, &view);
|
|
|
|
//IF STYLE SAYS TO SELECT TO END OF FRAME HERE...
|
|
nsCOMPtr<nsIPref> prefs( do_GetService(kPrefCID, &rv) );
|
|
PRInt32 prefInt = 0;
|
|
PRBool outofstylehandled = PR_FALSE;
|
|
if (NS_SUCCEEDED(rv) && prefs)
|
|
{
|
|
if (NS_SUCCEEDED(prefs->GetIntPref("browser.drag_out_of_frame_style", &prefInt)) && 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 (!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;
|
|
PRBool found = BinarySearchForPosition(acx, text, origin.x, 0, 0,
|
|
PRInt32(textLength),
|
|
PRInt32(aPoint.x) , //go to local coordinates
|
|
indx, textWidth);
|
|
if (found) {
|
|
PRInt32 charWidth;
|
|
acx->GetWidth(text[indx], charWidth);
|
|
charWidth /= 2;
|
|
|
|
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
|
|
aContentOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
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(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent)
|
|
{
|
|
nsPoint newPoint;
|
|
newPoint.y = aPoint.y;
|
|
if (aPoint.x < 0)
|
|
newPoint.x = 0;
|
|
else
|
|
newPoint.x = aPoint.x;
|
|
|
|
nsresult rv = GetPosition(aCX, newPoint, aNewContent, aContentOffset, aContentOffsetEnd);
|
|
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(nsIPresContext* aPresContext,
|
|
nsIDOMRange *aRange,
|
|
PRBool aSelected,
|
|
nsSpread aSpread)
|
|
{
|
|
nsresult result;
|
|
if (aSelected && ParentDisablesSelection())
|
|
return NS_OK;
|
|
|
|
nsFrameState frameState;
|
|
GetFrameState(&frameState);
|
|
#if 0
|
|
PRBool isSelected = ((frameState & 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;
|
|
PRBool wholeContentFound = PR_FALSE;//if the entire content we look at is selected.
|
|
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<nsIContent> content;
|
|
result = GetContent(getter_AddRefs(content));
|
|
nsCOMPtr<nsIDOMNode> thisNode;
|
|
thisNode = do_QueryInterface(content);
|
|
|
|
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;
|
|
wholeContentFound = PR_TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
else {
|
|
if ( aSelected != (PRBool)(frameState | NS_FRAME_SELECTED_CONTENT) ){
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
if ( aSelected )
|
|
frameState |= NS_FRAME_SELECTED_CONTENT;
|
|
else
|
|
{//we need to see if any other selection available.
|
|
SelectionDetails *details = nsnull;
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
nsCOMPtr<nsIFrameSelection> frameSelection;
|
|
|
|
nsresult rv = aPresContext->GetShell(getter_AddRefs(shell));
|
|
if (NS_SUCCEEDED(rv) && shell){
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
rv = GetSelectionController(aPresContext, getter_AddRefs(selCon));
|
|
if (NS_SUCCEEDED(rv) && selCon)
|
|
{
|
|
frameSelection = do_QueryInterface(selCon); //this MAY implement
|
|
}
|
|
if (!frameSelection)
|
|
rv = shell->GetFrameSelection(getter_AddRefs(frameSelection));
|
|
if (NS_SUCCEEDED(rv) && 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)
|
|
frameState &= ~NS_FRAME_SELECTED_CONTENT;
|
|
else
|
|
{
|
|
SelectionDetails *sdptr = details;
|
|
while ((sdptr = details->mNext) != nsnull) {
|
|
delete details;
|
|
details = sdptr;
|
|
}
|
|
delete details;
|
|
}
|
|
}
|
|
SetFrameState(frameState);
|
|
if (found){ //if range contains this frame...
|
|
nsRect frameRect;
|
|
GetRect(frameRect);
|
|
nsRect rect(0, 0, frameRect.width, frameRect.height);
|
|
Invalidate(aPresContext, rect, PR_FALSE);
|
|
// ForceDrawFrame(this);
|
|
}
|
|
if (aSpread == eSpreadDown)
|
|
{
|
|
nsIFrame *frame;
|
|
GetPrevInFlow(&frame);
|
|
while(frame){
|
|
frame->SetSelected(aPresContext, aRange,aSelected,eSpreadNone);
|
|
result = frame->GetPrevInFlow(&frame);
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
GetNextInFlow(&frame);
|
|
while (frame){
|
|
frame->SetSelected(aPresContext, aRange,aSelected,eSpreadNone);
|
|
result = frame->GetNextInFlow(&frame);
|
|
if (NS_FAILED(result))
|
|
break;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetPointFromOffset(nsIPresContext* aPresContext,
|
|
nsIRenderingContext* inRendContext,
|
|
PRInt32 inOffset,
|
|
nsPoint* outPoint)
|
|
{
|
|
if (!aPresContext || !inRendContext || !outPoint)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if (mContentLength <= 0) {
|
|
outPoint->x = 0;
|
|
outPoint->y = 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
|
|
nsCOMPtr<nsIDocument> doc(getter_AddRefs(GetDocument(aPresContext)));
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PRInt32 textLength;
|
|
PRInt32 numSpaces;
|
|
|
|
numSpaces = PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
ComputeExtraJustificationSpacing(*inRendContext, ts, paintBuffer.mBuffer, textLength, numSpaces);
|
|
|
|
|
|
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
|
|
{
|
|
if (ts.mSmallCaps || (0 != ts.mWordSpacing) || (0 != ts.mLetterSpacing) || ts.mJustifying)
|
|
{
|
|
GetWidth(*inRendContext, ts,
|
|
paintBuffer.mBuffer, ip[inOffset]-mContentOffset,
|
|
&width);
|
|
}
|
|
else
|
|
{
|
|
if (inOffset >=0)
|
|
inRendContext->GetWidth(paintBuffer.mBuffer, ip[inOffset]-mContentOffset,width);
|
|
}
|
|
if (inOffset > 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 spacing!!
|
|
width += ts.mSpaceWidth + ts.mWordSpacing;
|
|
}
|
|
}
|
|
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;
|
|
nsresult result;
|
|
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(&nextInFlow);
|
|
if (nextInFlow)
|
|
{
|
|
return nextInFlow->GetChildFrameContainingOffset(inContentOffset, inHint, outFrameContentOffset, outChildFrame);
|
|
}
|
|
else if (contentOffset != mContentLength) //that condition was only for when there is a choice
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
if (inContentOffset < mContentOffset) //could happen with floaters!
|
|
{
|
|
result = GetPrevInFlow(outChildFrame);
|
|
if (NS_SUCCEEDED(result) && outChildFrame)
|
|
return (*outChildFrame)->GetChildFrameContainingOffset(inContentOffset, inHint,
|
|
outFrameContentOffset,outChildFrame);
|
|
else
|
|
return result;
|
|
}
|
|
|
|
*outFrameContentOffset = contentOffset;
|
|
*outChildFrame = this;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::PeekOffset(nsIPresContext* aPresContext, nsPeekOffsetStruct *aPos)
|
|
{
|
|
|
|
if (!aPos || !mContent)
|
|
return NS_ERROR_NULL_POINTER;
|
|
if (aPos->mStartOffset < 0 )
|
|
aPos->mStartOffset = mContentLength + mContentOffset;
|
|
if (aPos->mStartOffset < mContentOffset){
|
|
aPos->mStartOffset = mContentOffset;
|
|
}
|
|
if (aPos->mStartOffset > (mContentOffset + mContentLength)){
|
|
nsIFrame *nextInFlow;
|
|
GetNextInFlow(&nextInFlow);
|
|
if (!nextInFlow){
|
|
NS_ASSERTION(PR_FALSE,"nsTextFrame::PeekOffset no more flow \n");
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
return nextInFlow->PeekOffset(aPresContext, aPos);
|
|
}
|
|
|
|
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;
|
|
result = mContent->GetDocument(doc);
|
|
if (NS_FAILED(result) || !doc) {
|
|
return result;
|
|
}
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
NS_RELEASE(doc);
|
|
|
|
nsTextTransformer tx(lb, 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);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eSelectCharacter:
|
|
{
|
|
// Transform text from content into renderable form
|
|
nsIDocument* doc;
|
|
result = mContent->GetDocument(doc);
|
|
if (NS_FAILED(result) || !doc) {
|
|
return result;
|
|
}
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
NS_RELEASE(doc);
|
|
|
|
nsTextTransformer tx(lb, nsnull, aPresContext);
|
|
PrepareUnicodeText(tx, &indexBuffer, &paintBuffer, &textLength);
|
|
|
|
nsIFrame *frameUsed = nsnull;
|
|
PRInt32 start;
|
|
PRBool found = PR_TRUE;
|
|
if (aPos->mDirection == eDirPrevious){
|
|
aPos->mContentOffset = 0;
|
|
PRInt32 i;
|
|
for (i = aPos->mStartOffset -1 - mContentOffset; i >=0; i--){
|
|
if (ip[i] < ip[aPos->mStartOffset - mContentOffset]){
|
|
aPos->mContentOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
if (i <0){
|
|
found = PR_FALSE;
|
|
GetPrevInFlow(&frameUsed);
|
|
start = mContentOffset;
|
|
aPos->mContentOffset = start;//in case next call fails we stop at this offset
|
|
}
|
|
}
|
|
else if (aPos->mDirection == eDirNext){
|
|
PRInt32 i;
|
|
aPos->mContentOffset = mContentLength;
|
|
for (i = aPos->mStartOffset +1 - mContentOffset; i <= mContentLength; i++){
|
|
if (ip[i] > ip[aPos->mStartOffset - mContentOffset]){
|
|
aPos->mContentOffset = i + mContentOffset;
|
|
break;
|
|
}
|
|
}
|
|
/* 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;
|
|
GetNextInFlow(&frameUsed);
|
|
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)
|
|
result = aPos->mResultFrame->PeekOffset(aPresContext, aPos);
|
|
}
|
|
else
|
|
aPos->mResultContent = mContent;
|
|
}
|
|
break;
|
|
|
|
case eSelectWord:
|
|
{
|
|
// Transform text from content into renderable form
|
|
nsIDocument* doc;
|
|
result = mContent->GetDocument(doc);
|
|
if (NS_FAILED(result) || !doc) {
|
|
return result;
|
|
}
|
|
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
nsCOMPtr<nsIWordBreaker> wb;
|
|
doc->GetWordBreaker(getter_AddRefs(wb));
|
|
NS_RELEASE(doc);
|
|
|
|
nsTextTransformer tx(lb, wb, 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;
|
|
if (aPos->mDirection == eDirPrevious){
|
|
keepSearching = PR_TRUE;
|
|
tx.Init(this, mContent, aPos->mStartOffset);
|
|
aPos->mContentOffset = mContentOffset;//initialize
|
|
if (tx.GetPrevWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace,
|
|
PR_FALSE) &&
|
|
(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{
|
|
while (isWhitespace &&
|
|
tx.GetPrevWord(PR_FALSE, &wordLen, &contentLen,
|
|
&isWhitespace, PR_FALSE)){
|
|
aPos->mContentOffset -= contentLen;
|
|
aPos->mEatingWS = PR_TRUE;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
else if (aPos->mDirection == eDirNext) {
|
|
tx.Init(this, mContent, aPos->mStartOffset );
|
|
aPos->mContentOffset = mContentOffset + mContentLength;//initialize
|
|
|
|
if (tx.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed, PR_TRUE, PR_FALSE) &&
|
|
(aPos->mStartOffset + contentLen <= (mContentLength + mContentOffset))){
|
|
|
|
if ((aPos->mEatingWS && isWhitespace) || !aPos->mEatingWS){
|
|
aPos->mContentOffset = aPos->mStartOffset + contentLen;
|
|
//check for whitespace next.
|
|
keepSearching = PR_TRUE;
|
|
aPos->mEatingWS = PR_TRUE;
|
|
if (!isWhitespace){
|
|
while (tx.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed, PR_TRUE, PR_FALSE))
|
|
{
|
|
if (aPos->mStartOffset + contentLen > (mContentLength + mContentOffset))
|
|
goto TryNextFrame;
|
|
if (isWhitespace)
|
|
aPos->mContentOffset += contentLen;
|
|
else
|
|
break;
|
|
}
|
|
keepSearching = PR_FALSE;
|
|
found = PR_TRUE;
|
|
}
|
|
else //we just need to jump the space, done here
|
|
{
|
|
while(tx.GetNextWord(PR_FALSE, &wordLen, &contentLen, &isWhitespace, &wasTransformed, PR_TRUE, PR_FALSE))
|
|
{
|
|
if (aPos->mStartOffset + contentLen > (mContentLength + mContentOffset))
|
|
goto TryNextFrame;
|
|
|
|
if (isWhitespace)
|
|
aPos->mContentOffset += contentLen;
|
|
else
|
|
break;
|
|
}
|
|
keepSearching = PR_FALSE;
|
|
found = PR_TRUE;
|
|
}
|
|
}
|
|
else if (aPos->mEatingWS)
|
|
{
|
|
aPos->mContentOffset = mContentOffset;
|
|
found = PR_TRUE;
|
|
}
|
|
if (!isWhitespace){
|
|
aPos->mEatingWS = PR_FALSE;
|
|
}
|
|
else if (!keepSearching) //we have found the "whole" word so just looking for WS
|
|
aPos->mEatingWS = PR_TRUE;
|
|
}
|
|
|
|
TryNextFrame:
|
|
GetNextInFlow(&frameUsed);
|
|
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);
|
|
result = GetFrameFromDirection(aPresContext, aPos);
|
|
if (NS_SUCCEEDED(result) && aPos->mResultFrame && aPos->mResultFrame!= this)
|
|
{
|
|
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;
|
|
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(nsIPresContext* 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(nsIPresContext* 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
|
|
nsCOMPtr<nsIPresShell> shell;
|
|
rv = aContext->GetShell(getter_AddRefs(shell));
|
|
if (NS_FAILED(rv) || !shell)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
//get the document
|
|
nsCOMPtr<nsIDocument> doc;
|
|
rv = shell->GetDocument(getter_AddRefs(doc));
|
|
if (!doc)
|
|
return rv?rv:NS_ERROR_FAILURE;
|
|
//get the linebreaker
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
//create texttransformer
|
|
nsTextTransformer tx(lb, 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
|
|
{
|
|
rv = nextInFlow->GetNextInFlow(&nextInFlow);
|
|
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");
|
|
|
|
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) {
|
|
*cp2-- = PRUnichar(*cp1--);
|
|
}
|
|
}
|
|
|
|
nsReflowStatus
|
|
nsTextFrame::MeasureText(nsIPresContext* 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;
|
|
PRInt32 lastWordLen = 0;
|
|
PRInt32 lastWordWidth = 0;
|
|
PRUnichar* lastWordPtr = nsnull;
|
|
PRBool textStartsWithNBSP = PR_FALSE;
|
|
PRBool endsInWhitespace = PR_FALSE;
|
|
PRBool endsInNewline = PR_FALSE;
|
|
PRBool justDidFirstLetter = PR_FALSE;
|
|
#ifdef _WIN32
|
|
PRBool 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)
|
|
#else
|
|
PRBool measureTextRuns = PR_FALSE;
|
|
#endif
|
|
TextRun textRun;
|
|
PRInt32 estimatedNumChars;
|
|
|
|
// Estimate the number of characters that will fit. Use 105% of the available
|
|
// width divided by the average character width
|
|
estimatedNumChars = (maxWidth - aTextData.mX) / aTs.mAveCharWidth;
|
|
estimatedNumChars += estimatedNumChars / 20;
|
|
|
|
aTextData.mX = 0;
|
|
for (;;firstThing = PR_FALSE) {
|
|
// Get next word/whitespace from the text
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
union {
|
|
char* bp1;
|
|
PRUnichar* bp2;
|
|
};
|
|
bp2 = aTx.GetNextWord(aTextData.mInWord, &wordLen, &contentLen, &isWhitespace,
|
|
&wasTransformed, textRun.mNumSegments == 0);
|
|
// Remember if the text was transformed
|
|
if (wasTransformed) {
|
|
mState |= TEXT_WAS_TRANSFORMED;
|
|
}
|
|
if (nsnull == bp2) {
|
|
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
|
|
nscoord width;
|
|
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;
|
|
}
|
|
|
|
// NOTE: Even if the textRun absorbs the whitespace below, we still
|
|
// want to remember that we're breakable.
|
|
aTextData.mIsBreakable = 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
|
|
width = (aTs.mSpaceWidth + aTs.mWordSpacing)*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
|
|
width = wordLen*(aTs.mWordSpacing + aTs.mSpaceWidth);// XXX simplistic
|
|
}
|
|
|
|
if (aTextData.mMeasureText) {
|
|
// See if there is room for the text
|
|
if ((0 != aTextData.mX) && aTextData.mWrapping && (aTextData.mX + width > maxWidth)) {
|
|
// The text will not fit.
|
|
break;
|
|
}
|
|
aTextData.mX += width;
|
|
}
|
|
prevColumn = column;
|
|
column += wordLen;
|
|
endsInWhitespace = PR_TRUE;
|
|
prevOffset = aTextData.mOffset;
|
|
aTextData.mOffset += contentLen;
|
|
} else {
|
|
// See if the first thing in the section of text is a
|
|
// non-breaking space (html nbsp entity). If it is then make
|
|
// note of that fact for the line layout logic.
|
|
if (aTextData.mWrapping && firstThing && (firstChar == ' ')) {
|
|
textStartsWithNBSP = PR_TRUE;
|
|
}
|
|
aTextData.mSkipWhitespace = PR_FALSE;
|
|
|
|
if (aTextData.mFirstLetterOK) {
|
|
// XXX need a lookup function here; plus look ahead using the
|
|
// text-runs
|
|
if ((firstChar == '\'') || (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, &width);
|
|
}
|
|
else {
|
|
// Measure just the one word
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
aReflowState.rendContext->GetWidth(bp1, wordLen, width);
|
|
} else {
|
|
aReflowState.rendContext->GetWidth(bp2, wordLen, width);
|
|
}
|
|
if (aTs.mLetterSpacing) {
|
|
width += aTs.mLetterSpacing * wordLen;
|
|
}
|
|
}
|
|
lastWordWidth = width;
|
|
|
|
// See if there is room for the text
|
|
if ((0 != aTextData.mX) && aTextData.mWrapping && (aTextData.mX + width > maxWidth)) {
|
|
// The text will not fit.
|
|
break;
|
|
}
|
|
aTextData.mX += width;
|
|
prevMaxWordWidth = aTextData.mMaxWordWidth;
|
|
if (width > aTextData.mMaxWordWidth) {
|
|
aTextData.mMaxWordWidth = width;
|
|
}
|
|
|
|
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:
|
|
#ifdef _WIN32
|
|
PRInt32 numCharsFit;
|
|
// These calls can return numCharsFit not positioned at a break in the textRun. Beware.
|
|
if (aTx.TransformedTextIsAscii()) {
|
|
aReflowState.rendContext->GetWidth((char*)aTx.GetWordBuffer(), textRun.mTotalNumChars,
|
|
maxWidth - aTextData.mX,
|
|
textRun.mBreaks, textRun.mNumSegments,
|
|
width, numCharsFit);
|
|
} else {
|
|
aReflowState.rendContext->GetWidth(aTx.GetWordBuffer(), textRun.mTotalNumChars,
|
|
maxWidth - aTextData.mX,
|
|
textRun.mBreaks, textRun.mNumSegments,
|
|
width, numCharsFit);
|
|
}
|
|
// See how much of the text fit
|
|
if ((0 != aTextData.mX) && aTextData.mWrapping && (aTextData.mX + width > maxWidth)) {
|
|
// None of the text fits
|
|
break;
|
|
}
|
|
|
|
// Find the index of the last segment that fit
|
|
PRInt32 lastSegment;
|
|
if (numCharsFit == textRun.mTotalNumChars) { // fast path, normal case
|
|
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
|
|
prevColumn = textRun.mBreaks[lastSegment - 1];
|
|
prevOffset = textRun.mSegments[lastSegment - 1].ContentLen();
|
|
// 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 += width;
|
|
column += numCharsFit;
|
|
aTextData.mOffset += textRun.mSegments[lastSegment].ContentLen();
|
|
endsInWhitespace = textRun.mSegments[lastSegment].IsWhitespace();
|
|
// Since we measure multiple words we don't know what the last word
|
|
// width is
|
|
lastWordWidth = -1;
|
|
|
|
// If all the text didn't fit, then we're done
|
|
if (numCharsFit != textRun.mTotalNumChars) {
|
|
break;
|
|
}
|
|
|
|
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 = (maxWidth - aTextData.mX) / aTs.mAveCharWidth;
|
|
estimatedNumChars += estimatedNumChars / 20;
|
|
#else
|
|
int unused = -1;
|
|
#endif
|
|
}
|
|
|
|
// If we didn't actually measure any text, then make sure it looks
|
|
// like we did
|
|
if (!aTextData.mMeasureText) {
|
|
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 spacing!
|
|
aTextData.mX += aTs.mSpaceWidth + aTs.mWordSpacing;
|
|
}
|
|
}
|
|
|
|
// 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.mIsBreakable = 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.mIsBreakable || (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(tmp, stdout);
|
|
printf("' lastWordLen=%d baseWidth=%d prevOffset=%d offset=%d next=",
|
|
lastWordLen, lastWordWidth, 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 || (lastWordWidth == -1)) {
|
|
// We either didn't measure any text or we measured multiple words
|
|
// at once so either way we don't know lastWordWidth. We'll have to
|
|
// compute it now
|
|
if (prevOffset == startingOffset) {
|
|
// There's only one word, so we don't have to measure after all
|
|
lastWordWidth = aTextData.mX;
|
|
}
|
|
else if (aTs.mSmallCaps) {
|
|
MeasureSmallCapsText(aReflowState, aTs, pWordBuf,
|
|
lastWordLen, &lastWordWidth);
|
|
}
|
|
else {
|
|
aReflowState.rendContext->GetWidth(pWordBuf, lastWordLen, lastWordWidth);
|
|
if (aTs.mLetterSpacing) {
|
|
lastWordWidth += aTs.mLetterSpacing * lastWordLen;
|
|
}
|
|
}
|
|
}
|
|
nscoord wordWidth = ComputeTotalWordWidth(aPresContext, aLb,
|
|
lineLayout,
|
|
aReflowState, next,
|
|
lastWordWidth,
|
|
pWordBuf,
|
|
lastWordLen,
|
|
wordBufLen);
|
|
if (!aTextData.mIsBreakable || (aTextData.mX - lastWordWidth + wordWidth <= 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 (wordWidth > aTextData.mMaxWordWidth) {
|
|
aTextData.mMaxWordWidth = wordWidth;
|
|
}
|
|
}
|
|
else {
|
|
#ifdef NOISY_REFLOW
|
|
ListTag(stdout);
|
|
printf(": look-ahead (didn't fit) x=%d wordWidth=%d lastWordWidth=%d\n",
|
|
aTextData.mX, wordWidth, lastWordWidth);
|
|
#endif
|
|
// The fully joined word won't fit. We need to reduce our
|
|
// size by the lastWordWidth.
|
|
aTextData.mX -= lastWordWidth;
|
|
aTextData.mMaxWordWidth = prevMaxWordWidth;
|
|
aTextData.mOffset = prevOffset;
|
|
column = prevColumn;
|
|
#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);
|
|
lineLayout.SetTextStartsWithNBSP(textStartsWithNBSP);
|
|
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)
|
|
? NS_FRAME_COMPLETE
|
|
: NS_FRAME_NOT_COMPLETE;
|
|
if (endsInNewline) {
|
|
rs = NS_INLINE_LINE_BREAK_AFTER(rs);
|
|
}
|
|
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(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsTextFrame", aReflowState.reason);
|
|
#ifdef NOISY_REFLOW
|
|
ListTag(stdout);
|
|
printf(": BeginReflow: availableSize=%d,%d\n",
|
|
aReflowState.availableWidth, aReflowState.availableHeight);
|
|
#endif
|
|
|
|
// 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 (nsnull != aMetrics.maxElementSize) {
|
|
aMetrics.maxElementSize->width = 0;
|
|
aMetrics.maxElementSize->height = 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(&prevInFlow);
|
|
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);
|
|
|
|
// 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 (ts.mFont->mFont.decorations & NS_STYLE_TEXT_DECORATION_BLINK) {
|
|
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
|
|
nsCOMPtr<nsIDocument> doc;
|
|
mContent->GetDocument(*getter_AddRefs(doc));
|
|
if (NS_WARN_IF_FALSE(doc, "Content has no document.")) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsCOMPtr<nsILineBreaker> lb;
|
|
doc->GetLineBreaker(getter_AddRefs(lb));
|
|
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, !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 ContentChanged() 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 spacing!
|
|
realWidth += ts.mSpaceWidth + ts.mWordSpacing;
|
|
}
|
|
if (!mNextInFlow &&
|
|
(mState & TEXT_OPTIMIZE_RESIZE) &&
|
|
!aMetrics.maxElementSize &&
|
|
(lastTimeWeSkippedLeadingWS == skipWhitespace) &&
|
|
((wrapping && (maxWidth >= realWidth)) ||
|
|
(!wrapping && (prevColumn == column))) &&
|
|
!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(), nsnull != aMetrics.maxElementSize);
|
|
|
|
// Measure the text
|
|
aStatus = MeasureText(aPresContext, aReflowState, tx, lb, ts, textData);
|
|
|
|
if (tx.HasMultibyte()) {
|
|
mState |= TEXT_HAS_MULTIBYTE;
|
|
}
|
|
mState &= ~TEXT_TRIMMED_WS;
|
|
|
|
// 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 {
|
|
ts.mNormalFont->GetHeight(aMetrics.height);
|
|
ts.mNormalFont->GetMaxAscent(aMetrics.ascent);
|
|
ts.mNormalFont->GetMaxDescent(aMetrics.descent);
|
|
}
|
|
if (!wrapping) {
|
|
textData.mMaxWordWidth = textData.mX;
|
|
}
|
|
if (nsnull != aMetrics.maxElementSize) {
|
|
aMetrics.maxElementSize->width = textData.mMaxWordWidth;
|
|
aMetrics.maxElementSize->height = aMetrics.height;
|
|
}
|
|
|
|
// Set content offset and length
|
|
mContentOffset = startingOffset;
|
|
mContentLength = textData.mOffset - startingOffset;
|
|
|
|
// Compute space and letter counts for justification, if required
|
|
if (ts.mJustifying) {
|
|
PRInt32 numSpaces;
|
|
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.
|
|
numSpaces = PrepareUnicodeText(tx, nsnull, nsnull, &textLength);
|
|
lineLayout.SetTextJustificationWeights(numSpaces, textLength - numSpaces);
|
|
}
|
|
|
|
|
|
#ifdef MOZ_MATHML
|
|
// Simple minded code to also return the bounding metrics if the caller wants it...
|
|
// More consolidation is needed -- a better approach is to follow what is done by
|
|
// the other routines that are doing measurements.
|
|
if (NS_REFLOW_CALC_BOUNDING_METRICS & aMetrics.mFlags) {
|
|
rv = NS_ERROR_UNEXPECTED; // initialize with an error; it is reset if things turn out well
|
|
aMetrics.mBoundingMetrics.Clear();
|
|
// Get the text to measure.
|
|
nsCOMPtr<nsIDOMText> domText(do_QueryInterface(mContent));
|
|
if (domText.get()) {
|
|
nsAutoString aData;
|
|
domText->GetData(aData);
|
|
|
|
// Extract the piece of text relevant to us -- XXX whitespace cause a mess here
|
|
nsAutoString aText;
|
|
aData.Mid(aText, mContentOffset, mContentLength);
|
|
|
|
// Set the font
|
|
nsStyleFont font;
|
|
mStyleContext->GetStyle(eStyleStruct_Font, font);
|
|
aReflowState.rendContext->SetFont(font.mFont);
|
|
|
|
// Now get the exact bounding metrics of the text
|
|
nsBoundingMetrics bm;
|
|
rv = aReflowState.rendContext->GetBoundingMetrics(aText.GetUnicode(), PRUint32(mContentLength), bm);
|
|
if (NS_SUCCEEDED(rv)) aMetrics.mBoundingMetrics = bm;
|
|
}
|
|
if (NS_FAILED(rv)) {
|
|
// 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;
|
|
#ifdef MOZ_MATHML_BOUNDINGMETRICS
|
|
printf("nsTextFrame: could not perform GetBoundingMetrics()\n");
|
|
#endif
|
|
}
|
|
}
|
|
#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_COMPLETE == 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) {
|
|
maxFrameWidth = PR_MAX(maxFrameWidth, mRect.width);
|
|
maxFrameHeight = PR_MAX(maxFrameHeight, mRect.height);
|
|
Invalidate(aPresContext, nsRect(0,0,maxFrameWidth,maxFrameHeight));
|
|
}
|
|
|
|
|
|
#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
|
|
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(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRC,
|
|
nscoord& aDeltaWidth)
|
|
{
|
|
nscoord dw = 0;
|
|
const nsStyleText* textStyle = (const nsStyleText*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Text);
|
|
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->GetText(&frag);
|
|
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.
|
|
const nsStyleFont* fontStyle = (const nsStyleFont*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Font);
|
|
aRC.SetFont(fontStyle->mFont);
|
|
aRC.GetWidth(' ', dw);
|
|
// NOTE: Trailing whitespace includes word spacing!
|
|
PRIntn unit = textStyle->mWordSpacing.GetUnit();
|
|
if (eStyleUnit_Coord == unit) {
|
|
dw += textStyle->mWordSpacing.GetCoordValue();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#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;
|
|
}
|
|
}
|
|
}
|
|
|
|
nscoord
|
|
nsTextFrame::ComputeTotalWordWidth(nsIPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aNextFrame,
|
|
nscoord aBaseWidth,
|
|
PRUnichar* aWordBuf,
|
|
PRUint32 aWordLen,
|
|
PRUint32 aWordBufSize)
|
|
{
|
|
// 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);
|
|
|
|
nscoord addedWidth = 0;
|
|
while (nsnull != aNextFrame) {
|
|
nsIContent* content = nsnull;
|
|
if ((NS_OK == aNextFrame->GetContent(&content)) && (nsnull != content)) {
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" next textRun=");
|
|
nsFrame::ListTag(stdout, aNextFrame);
|
|
printf("\n");
|
|
#endif
|
|
nsITextContent* tc;
|
|
if (NS_OK == content->QueryInterface(kITextContentIID, (void**)&tc)) {
|
|
PRBool stop = PR_FALSE;
|
|
nscoord moreWidth = ComputeWordFragmentWidth(aPresContext,
|
|
aLineBreaker,
|
|
aLineLayout,
|
|
aReflowState,
|
|
aNextFrame, content, tc,
|
|
&stop,
|
|
aWordBuf,
|
|
aWordLen,
|
|
aWordBufSize);
|
|
NS_RELEASE(tc);
|
|
NS_RELEASE(content);
|
|
addedWidth += moreWidth;
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
printf(" moreWidth=%d (addedWidth=%d) stop=%c\n", moreWidth,
|
|
addedWidth, stop?'T':'F');
|
|
#endif
|
|
if (stop) {
|
|
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.
|
|
NS_RELEASE(content);
|
|
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", aBaseWidth + addedWidth);
|
|
#endif
|
|
return aBaseWidth + addedWidth;
|
|
}
|
|
|
|
nscoord
|
|
nsTextFrame::ComputeWordFragmentWidth(nsIPresContext* aPresContext,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsLineLayout& aLineLayout,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsIFrame* aTextFrame,
|
|
nsIContent* aContent,
|
|
nsITextContent* aText,
|
|
PRBool* aStop,
|
|
const PRUnichar* aWordBuf,
|
|
PRUint32& aRunningWordLen,
|
|
PRUint32 aWordBufSize)
|
|
{
|
|
nsTextTransformer tx(aLineBreaker, nsnull, aPresContext);
|
|
tx.Init(aTextFrame, aContent, 0);
|
|
PRBool isWhitespace, wasTransformed;
|
|
PRInt32 wordLen, contentLen;
|
|
PRUnichar* bp = tx.GetNextWord(PR_TRUE, &wordLen, &contentLen, &isWhitespace, &wasTransformed);
|
|
if (!bp || isWhitespace) {
|
|
// Don't bother measuring nothing
|
|
*aStop = PR_TRUE;
|
|
return 0;
|
|
}
|
|
*aStop = contentLen < tx.GetContentLength();
|
|
|
|
// Convert any spaces in the current word back to nbsp's. This keeps
|
|
// the breaking logic happy.
|
|
RevertSpacesToNBSP(bp, wordLen);
|
|
|
|
// We need to adjust the length by look at the two pieces together
|
|
// XXX this should grow aWordBuf if necessary
|
|
PRUint32 copylen = sizeof(PRUnichar) *
|
|
( ((wordLen + aRunningWordLen) > aWordBufSize)
|
|
? (aWordBufSize - aRunningWordLen)
|
|
: wordLen
|
|
);
|
|
if((aWordBufSize > aRunningWordLen) && (copylen > 0))
|
|
{
|
|
nsCRT::memcpy((void*)&(aWordBuf[aRunningWordLen]), bp, copylen);
|
|
|
|
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;
|
|
*aStop = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// 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(! *aStop)
|
|
aRunningWordLen += wordLen;
|
|
}
|
|
if((*aStop) && (wordLen == 0))
|
|
return 0;
|
|
|
|
nsCOMPtr<nsIStyleContext> sc;
|
|
aTextFrame->GetStyleContext(getter_AddRefs(sc));
|
|
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.
|
|
nscoord width;
|
|
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, &width);
|
|
}
|
|
else {
|
|
rc.GetWidth(bp, wordLen, width);
|
|
// NOTE: Don't forget to add letter spacing for the word fragment!
|
|
width += wordLen*ts.mLetterSpacing;
|
|
}
|
|
rc.SetFont(oldfm);
|
|
|
|
#ifdef DEBUG_WORD_WRAPPING
|
|
nsAutoString tmp(bp, wordLen);
|
|
printf(" fragment='");
|
|
fputs(tmp, stdout);
|
|
printf("' width=%d [wordLen=%d contentLen=%d ContentLength=%d]\n",
|
|
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(aTextFrame);
|
|
return width;
|
|
}
|
|
|
|
*aStop = PR_TRUE;
|
|
return 0;
|
|
}
|
|
|
|
// Translate the mapped content into a string that's printable
|
|
void
|
|
nsTextFrame::ToCString(nsString& aBuf, PRInt32* aTotalContentLength) const
|
|
{
|
|
const nsTextFragment* frag;
|
|
|
|
// Get the frames text content
|
|
nsITextContent* tc;
|
|
if (NS_OK != mContent->QueryInterface(kITextContentIID, (void**) &tc)) {
|
|
return;
|
|
}
|
|
tc->GetText(&frag);
|
|
NS_RELEASE(tc);
|
|
|
|
// 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.AppendWithConversion("\\r");
|
|
} else if (ch == '\n') {
|
|
aBuf.AppendWithConversion("\\n");
|
|
} else if (ch == '\t') {
|
|
aBuf.AppendWithConversion("\\t");
|
|
} else if ((ch < ' ') || (ch >= 127)) {
|
|
aBuf.AppendWithConversion("\\0");
|
|
aBuf.AppendInt((PRInt32)ch, 8);
|
|
} else {
|
|
aBuf.Append(ch);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetFrameType(nsIAtom** aType) const
|
|
{
|
|
NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer");
|
|
*aType = nsLayoutAtoms::textFrame;
|
|
NS_ADDREF(*aType);
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHODIMP
|
|
nsTextFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
if (!aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aResult = sizeof(*this);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("Text", aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsTextFrame::List(nsIPresContext* aPresContext, FILE* out, PRInt32 aIndent) const
|
|
{
|
|
// Output the tag
|
|
IndentBy(out, aIndent);
|
|
ListTag(out);
|
|
#ifdef DEBUG_waterson
|
|
fprintf(out, " [parent=%p]", mParent);
|
|
#endif
|
|
nsIView* view;
|
|
GetView(aPresContext, &view);
|
|
if (nsnull != view) {
|
|
fprintf(out, " [view=%p]", view);
|
|
}
|
|
|
|
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", mNextSibling);
|
|
}
|
|
nsIFrame* prevInFlow;
|
|
GetPrevInFlow(&prevInFlow);
|
|
if (nsnull != prevInFlow) {
|
|
fprintf(out, " prev-in-flow=%p", prevInFlow);
|
|
}
|
|
if (nsnull != mNextInFlow) {
|
|
fprintf(out, " next-in-flow=%p", 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, " sc=%p<\n", mStyleContext);
|
|
|
|
// Output the text
|
|
aIndent++;
|
|
|
|
IndentBy(out, aIndent);
|
|
fputs("\"", out);
|
|
fputs(tmp, out);
|
|
fputs("\"\n", out);
|
|
|
|
aIndent--;
|
|
IndentBy(out, aIndent);
|
|
fputs(">\n", out);
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|