Removing obsolete files (old imagelib cruft). r=pavlov, not part of the build.
git-svn-id: svn://10.0.0.236/trunk@122507 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
bryner%netscape.com
parent
19d0236976
commit
7e8230a2e9
@ -1,580 +0,0 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsHTMLImageLoader.h"
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#include "nsIStyleContext.h"
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#include "nsFrame.h"
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#include "nsIURL.h"
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#include "nsNetUtil.h"
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#ifdef DEBUG
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#undef NOISY_IMAGE_LOADING
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#else
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#undef NOISY_IMAGE_LOADING
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#endif
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MOZ_DECL_CTOR_COUNTER(nsHTMLImageLoader)
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nsHTMLImageLoader::nsHTMLImageLoader()
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: mBaseURL(nsnull),
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mFrame(nsnull),
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mCallBack(nsnull),
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mClosure(nsnull),
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mImageLoader(nsnull),
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mAllFlags(0),
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mIntrinsicImageSize(0, 0),
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mComputedImageSize(0, 0)
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{
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MOZ_COUNT_CTOR(nsHTMLImageLoader);
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}
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nsHTMLImageLoader::~nsHTMLImageLoader()
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{
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MOZ_COUNT_DTOR(nsHTMLImageLoader);
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NS_IF_RELEASE(mBaseURL);
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NS_IF_RELEASE(mImageLoader);
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}
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void
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nsHTMLImageLoader::Init(nsIFrame* aFrame,
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nsHTMLImageLoaderCB aCallBack,
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void* aClosure,
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nsIURI* aBaseURL,
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const nsString& aURLSpec)
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{
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mFrame = aFrame;
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mCallBack = aCallBack;
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mClosure = aClosure;
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mBaseURL = aBaseURL;
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NS_IF_ADDREF(mBaseURL);
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SetURL(aURLSpec);
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}
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nsIImage*
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nsHTMLImageLoader::GetImage()
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{
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nsIImage* image = nsnull;
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if (mImageLoader) {
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mImageLoader->GetImage(&image);
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}
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return image;
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}
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void
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nsHTMLImageLoader::GetNaturalImageSize(PRUint32* naturalWidth, PRUint32* naturalHeight)
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{
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*naturalWidth = 0;
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*naturalHeight = 0;
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if (mImageLoader) {
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mImageLoader->GetNaturalImageSize(naturalWidth, naturalHeight);
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}
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}
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void
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nsHTMLImageLoader::SetURL(const nsString& aNewSpec)
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{
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mURLSpec = aNewSpec;
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mURLSpec.Trim(" \t\n\r");
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if (mBaseURL && !aNewSpec.IsEmpty()) {
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nsString empty;
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nsresult rv;
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rv = NS_MakeAbsoluteURI(mURL, mURLSpec, mBaseURL);
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if (NS_FAILED(rv)) {
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mURL = mURLSpec;
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}
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} else {
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mURL = mURLSpec;
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}
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}
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void
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nsHTMLImageLoader::StopLoadImage(nsIPresContext* aPresContext)
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{
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if (mImageLoader) {
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aPresContext->StopLoadImage(mFrame, mImageLoader);
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NS_RELEASE(mImageLoader);
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}
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}
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void
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nsHTMLImageLoader::StopAllLoadImages(nsIPresContext* aPresContext)
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{
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aPresContext->StopAllLoadImagesFor(mFrame, mFrame);
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}
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nsresult
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nsHTMLImageLoader::ImageLoadCB(nsIPresContext* aPresContext,
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nsIFrameImageLoader* aLoader,
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nsIFrame* aFrame,
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void* aClosure,
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PRUint32 aStatus)
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{
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if (aClosure) {
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((nsHTMLImageLoader*)aClosure)->Update(aPresContext, aFrame, aStatus);
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}
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return NS_OK;
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}
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void
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nsHTMLImageLoader::Update(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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PRUint32 aStatus)
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{
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#ifdef NOISY_IMAGE_LOADING
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nsFrame::ListTag(stdout, aFrame);
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printf(": update: status=%x [loader=%p] callBack=%p squelch=%s\n",
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aStatus, mImageLoader, mCallBack,
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mFlags.mSquelchCallback ? "yes" : "no");
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#endif
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if (!mFlags.mNeedSizeNotification &&
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NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE & aStatus) {
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// remove the size available bit since it is not needed
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aStatus &= ~NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE;
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// check if any status left
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if (aStatus == NS_IMAGE_LOAD_STATUS_NONE)
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return;
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}
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if (NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE & aStatus) {
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if (mImageLoader) {
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mImageLoader->GetSize(mIntrinsicImageSize);
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if (mFlags.mNeedIntrinsicImageSize) {
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mFlags.mHaveIntrinsicImageSize = PR_TRUE;
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}
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}
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}
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// Pass on update to the user of this object if they want it
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if (mCallBack) {
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// We squelch the status size callback in the case where the client doesn't
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// want the size returned. However, don't squelch a status that says the image
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// failed to load
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if ((NS_IMAGE_LOAD_STATUS_ERROR & aStatus) || !mFlags.mSquelchCallback) {
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(*mCallBack)(aPresContext, this, aFrame, mClosure, aStatus);
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}
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}
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}
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// The prefix for special "internal" images that are well known
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#define GOPHER_SPEC "internal-gopher-"
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// Note: sizeof a string constant includes the \0 at the end so
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// subtract one
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#define GOPHER_SPEC_SIZE (sizeof(GOPHER_SPEC) - 1)
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nsresult
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nsHTMLImageLoader::StartLoadImage(nsIPresContext* aPresContext)
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{
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if (!mFrame) {
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// We were not initialized!
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return NS_ERROR_NULL_POINTER;
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}
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if (mURL.IsEmpty()) {
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return NS_OK;
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}
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// Note: navigator 4.* and earlier releases ignored the base tags
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// effect on the builtin images. So we do too. Use mURLSpec instead
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// of the absolute url...
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nsAutoString internalImageURLSpec;
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nsString* urlSpec = &mURL;
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if (mURLSpec.CompareWithConversion(GOPHER_SPEC, PR_FALSE, GOPHER_SPEC_SIZE) == 0) {
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// We found a special image source value that refers to a
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// builtin image. Rewrite the source url as a resource url.
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urlSpec = &internalImageURLSpec;
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mURLSpec.Mid(internalImageURLSpec, GOPHER_SPEC_SIZE,
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mURLSpec.Length() - GOPHER_SPEC_SIZE);
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internalImageURLSpec = NS_LITERAL_STRING("resource:/res/html/gopher-") +
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internalImageURLSpec +
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NS_LITERAL_STRING(".gif");
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}
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// This is kind of sick, but its possible that we will get a
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// notification *before* we have setup mImageLoader. To get around
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// this, we let the pres-context store into mImageLoader and sort
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// things after it returns.
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nsIFrameImageLoader* oldLoader = mImageLoader;
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nsSize* sizeToLoadWidth = nsnull;
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if (!mFlags.mAutoImageSize && !mFlags.mNeedIntrinsicImageSize) {
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sizeToLoadWidth = &mComputedImageSize;
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}
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nsresult rv = aPresContext->StartLoadImage(*urlSpec, nsnull,
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sizeToLoadWidth,
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mFrame, ImageLoadCB, (void*)this,
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mFrame, &mImageLoader);
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#ifdef NOISY_IMAGE_LOADING
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nsFrame::ListTag(stdout, mFrame);
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printf(": loading image '");
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fputs(NS_LossyConvertUCS2toASCII(mURL).get(), stdout);
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printf("' @ ");
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if (mFlags.mNeedIntrinsicImageSize) {
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printf("intrinsic size ");
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}
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printf("%d,%d; oldLoader=%p newLoader=%p",
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mComputedImageSize.width, mComputedImageSize.height,
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oldLoader, mImageLoader);
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if (sizeToLoadWidth) {
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printf(" sizeToLoadWidth=%d,%d",
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sizeToLoadWidth->width, sizeToLoadWidth->height);
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}
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else {
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printf(" autoImageSize=%s needIntrinsicImageSize=%s",
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mFlags.mAutoImageSize ? "yes" : "no",
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mFlags.mNeedIntrinsicImageSize ? "yes" : "no");
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}
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printf("\n");
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#endif
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if (oldLoader != mImageLoader) {
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if (nsnull != oldLoader) {
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// Tell presentation context we are done with the old image loader
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aPresContext->StopLoadImage(mFrame, oldLoader);
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}
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}
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// Release the old image loader
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NS_IF_RELEASE(oldLoader);
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return rv;
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}
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void
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nsHTMLImageLoader::UpdateURLSpec(nsIPresContext* aPresContext,
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const nsString& aNewSpec)
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{
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SetURL(aNewSpec);
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// Start image loading with the previously computed size information
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StartLoadImage(aPresContext);
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}
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#define MINMAX(_value,_min,_max) \
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((_value) < (_min) \
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? (_min) \
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: ((_value) > (_max) \
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? (_max) \
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: (_value)))
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PRBool
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nsHTMLImageLoader::GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsHTMLReflowMetrics& aDesiredSize)
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{
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nscoord widthConstraint = NS_INTRINSICSIZE;
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nscoord heightConstraint = NS_INTRINSICSIZE;
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PRBool fixedContentWidth = PR_FALSE;
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PRBool fixedContentHeight = PR_FALSE;
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if (mFlags.mInRecalcMode)
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{ // only true after an unconstrained reflow of a %-width image recieved after we've fetched our intrinsic width
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// really! This case is for bug 39901 and 38396. The point is, we've already
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// calculated everything we need and we want to just return it right away.
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// This is somewhat fragile, since it makes an assumption about the way reflow works.
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mFlags.mInRecalcMode=0; // clear the mode
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// block code will lie to us, so use our already-computed values
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aDesiredSize.width = mComputedImageSize.width;
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aDesiredSize.height = mComputedImageSize.height;
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return PR_TRUE;
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}
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nscoord minWidth, maxWidth, minHeight, maxHeight;
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if (aReflowState) {
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// Determine whether the image has fixed content width
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widthConstraint = aReflowState->mComputedWidth;
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minWidth = aReflowState->mComputedMinWidth;
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maxWidth = aReflowState->mComputedMaxWidth;
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if (NS_INTRINSICSIZE != widthConstraint) {
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fixedContentWidth = PR_TRUE;
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}
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else if (mFlags.mHaveIntrinsicImageSize) {
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// At this point we know that the width value was not
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// constrained and that we now know the intrinsic size of the
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// image.
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//
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// The css2 spec states that if a min/max width value is
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// provided then it acts as a substitute value for the "width"
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// property, if it applies. Therefore, we will force the
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// fixedContentWidth flag to true in these cases.
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if ((0 != minWidth) ||
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(NS_UNCONSTRAINEDSIZE != maxWidth))
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{
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// Use the intrinsic image width for the min-max comparisons,
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// since the width property is "auto".
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widthConstraint = mIntrinsicImageSize.width;
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fixedContentWidth = PR_TRUE;
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}
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// Check the special case where we have the intrinsic width
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// (already tested to get into this block of code)
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// and it's an unconstrained reflow, and we are %-width
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// This special case is for bug 39901 and 38396
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else if (aReflowState &&
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(NS_UNCONSTRAINEDSIZE == aReflowState->availableWidth) &&
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(eStyleUnit_Percent==aReflowState->mStylePosition->mWidth.GetUnit()))
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{
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// Use the intrinsic image width
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// since the width property is percent (uncalcuable at this time).
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widthConstraint = mIntrinsicImageSize.width;
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fixedContentWidth = PR_TRUE;
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mFlags.mInRecalcMode = PR_TRUE; // we set up this state for bug 39901 and 38396
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}
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}
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// Determine whether the image has fixed content height
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heightConstraint = aReflowState->mComputedHeight;
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minHeight = aReflowState->mComputedMinHeight;
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maxHeight = aReflowState->mComputedMaxHeight;
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if (NS_UNCONSTRAINEDSIZE != heightConstraint) {
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fixedContentHeight = PR_TRUE;
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}
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else if (mFlags.mHaveIntrinsicImageSize) {
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// At this point we know that the height value was not
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// constrained and that we now know the intrinsic size of the
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// image.
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//
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// The css2 spec states that if a min/max height value is
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// provided then it acts as a substitute value for the "height"
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// property, if it applies. Therefore, we will force the
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// fixedContentHeight flag to true in these cases.
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if ((0 != minHeight) ||
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(NS_UNCONSTRAINEDSIZE != maxHeight)) {
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// Use the intrinsic image height for the min-max comparisons,
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// since the height property is "auto".
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heightConstraint = mIntrinsicImageSize.height;
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fixedContentHeight = PR_TRUE;
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}
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}
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}
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else {
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minWidth = minHeight = 0;
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maxWidth = maxHeight = NS_UNCONSTRAINEDSIZE;
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}
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float p2t, t2p;
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aPresContext->GetPixelsToTwips(&p2t);
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aPresContext->GetTwipsToPixels(&t2p);
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for (;;) {
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PRBool haveComputedSize = PR_FALSE;
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PRBool needIntrinsicImageSize = PR_FALSE;
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nscoord newWidth, newHeight;
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mFlags.mAutoImageSize = PR_FALSE;
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mFlags.mNeedSizeNotification = PR_FALSE;
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if (fixedContentWidth) {
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||||
if (fixedContentHeight) {
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||||
newWidth = MINMAX(widthConstraint, minWidth, maxWidth);
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||||
newHeight = MINMAX(heightConstraint, minHeight, maxHeight);
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||||
haveComputedSize = PR_TRUE;
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||||
}
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||||
else {
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||||
// We have a width, and an auto height. Compute height from
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// width once we have the intrinsic image size.
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||||
newWidth = MINMAX(widthConstraint, minWidth, maxWidth);
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if (mFlags.mHaveIntrinsicImageSize) {
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float width = mIntrinsicImageSize.width
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||||
? (float) mIntrinsicImageSize.width
|
||||
: (float) mIntrinsicImageSize.height; // avoid divide by zero
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||||
float height = (float) mIntrinsicImageSize.height;
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||||
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||||
// snap the width to the nearest pixel value to prevent a
|
||||
// feedback loop.
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||||
PRInt32 pixelWidth = NSTwipsToIntPixels(newWidth + nscoord(p2t / 2), t2p);
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||||
newWidth = NSIntPixelsToTwips(pixelWidth, p2t);
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||||
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||||
newHeight = (nscoord)
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||||
NSToIntRound(newWidth * height / width);
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||||
newHeight = MINMAX(newHeight, minHeight, maxHeight);
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||||
haveComputedSize = PR_TRUE;
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||||
}
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||||
else {
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||||
newHeight = 1;
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||||
needIntrinsicImageSize = PR_TRUE;
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||||
mFlags.mNeedSizeNotification = PR_TRUE;
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||||
}
|
||||
}
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||||
}
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||||
else if (fixedContentHeight) {
|
||||
// We have a height, and an auto width. Compute width from height
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||||
// once we have the intrinsic image size.
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||||
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||||
// otherwise, we really have auto-width based on height
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||||
newHeight = MINMAX(heightConstraint, minHeight, maxHeight);
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||||
if (mFlags.mHaveIntrinsicImageSize) {
|
||||
float width = (float) mIntrinsicImageSize.width;
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||||
float height = mIntrinsicImageSize.height
|
||||
? (float) mIntrinsicImageSize.height
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||||
: (float) mIntrinsicImageSize.width; // avoid divide by zero
|
||||
|
||||
// snap the height to the nearest pixel value to prevent a
|
||||
// feedback loop.
|
||||
PRInt32 pixelHeight = NSTwipsToIntPixels(newHeight + nscoord(p2t / 2), t2p);
|
||||
newHeight = NSIntPixelsToTwips(pixelHeight, p2t);
|
||||
|
||||
newWidth = (nscoord)
|
||||
NSToIntRound(newHeight * width / height);
|
||||
newWidth = MINMAX(newWidth, minWidth, maxWidth);
|
||||
haveComputedSize = PR_TRUE;
|
||||
}
|
||||
else {
|
||||
newWidth = 1;
|
||||
needIntrinsicImageSize = PR_TRUE;
|
||||
mFlags.mNeedSizeNotification = PR_TRUE;
|
||||
}
|
||||
}
|
||||
else {
|
||||
mFlags.mAutoImageSize = PR_TRUE;
|
||||
if (mFlags.mHaveIntrinsicImageSize) {
|
||||
newWidth = MINMAX(mIntrinsicImageSize.width, minWidth, maxWidth);
|
||||
newHeight = MINMAX(mIntrinsicImageSize.height, minHeight, maxHeight);
|
||||
haveComputedSize = PR_TRUE;
|
||||
}
|
||||
else {
|
||||
newWidth = 1;
|
||||
newHeight = 1;
|
||||
needIntrinsicImageSize = PR_TRUE;
|
||||
mFlags.mNeedSizeNotification = PR_TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
mFlags.mNeedIntrinsicImageSize = needIntrinsicImageSize;
|
||||
mFlags.mHaveComputedSize = haveComputedSize;
|
||||
mComputedImageSize.width = newWidth;
|
||||
mComputedImageSize.height = newHeight;
|
||||
#ifdef NOISY_IMAGE_LOADING
|
||||
nsFrame::ListTag(stdout, mFrame);
|
||||
printf(": %s%scomputedSize=%d,%d min=%d,%d max=%d,%d fixed=%s,%s\n",
|
||||
mFlags.mNeedIntrinsicImageSize ? "need-instrinsic-size " : "",
|
||||
mFlags.mHaveComputedSize ? "have-computed-size " : "",
|
||||
mComputedImageSize.width, mComputedImageSize.height,
|
||||
minWidth, minHeight, maxWidth, maxHeight,
|
||||
fixedContentWidth ? "yes" : "no",
|
||||
fixedContentHeight ? "yes" : "no");
|
||||
#endif
|
||||
|
||||
// Load the image at the desired size
|
||||
if ((0 != newWidth) && (0 != newHeight))
|
||||
{
|
||||
// Make sure we squelch a callback to the client of this image
|
||||
// loader during a start-load-image. Its possible the image we
|
||||
// want is ready to go and will therefore fire a notification
|
||||
// during the StartLoadImage call. Since this routine is already
|
||||
// returning size information there is no point in passing on the
|
||||
// callbacks to the client.
|
||||
mFlags.mSquelchCallback = PR_TRUE;
|
||||
StartLoadImage(aPresContext);
|
||||
mFlags.mSquelchCallback = PR_FALSE;
|
||||
|
||||
// See if we just got the intrinsic size
|
||||
if (mFlags.mNeedIntrinsicImageSize && mFlags.mHaveIntrinsicImageSize) {
|
||||
// We just learned our intrinisic size. Start over from the top...
|
||||
#ifdef NOISY_IMAGE_LOADING
|
||||
printf(" *** size arrived during StartLoadImage, looping...\n");
|
||||
#endif
|
||||
continue;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
aDesiredSize.width = mComputedImageSize.width;
|
||||
aDesiredSize.height = mComputedImageSize.height;
|
||||
#ifdef NOISY_IMAGE_LOADING
|
||||
printf("nsHTMLImageLoader::GetDesiredSize returning %d, %d\n",
|
||||
aDesiredSize.width, aDesiredSize.height);
|
||||
#endif
|
||||
if ((mFlags.mNeedIntrinsicImageSize && !mFlags.mHaveIntrinsicImageSize) ||
|
||||
mFlags.mNeedSizeNotification) {
|
||||
return PR_FALSE;
|
||||
}
|
||||
return PR_TRUE;
|
||||
}
|
||||
|
||||
PRBool
|
||||
nsHTMLImageLoader::GetLoadImageFailed() const
|
||||
{
|
||||
PRBool result = PR_FALSE;
|
||||
|
||||
if (nsnull != mImageLoader) {
|
||||
// Ask the image loader whether the load failed
|
||||
PRUint32 loadStatus;
|
||||
mImageLoader->GetImageLoadStatus(&loadStatus);
|
||||
result = 0 != (loadStatus & NS_IMAGE_LOAD_STATUS_ERROR);
|
||||
return result;
|
||||
}
|
||||
|
||||
result = mFlags.mLoadImageFailed ? PR_TRUE : PR_FALSE;
|
||||
return result;
|
||||
}
|
||||
|
||||
PRUint32
|
||||
nsHTMLImageLoader::GetLoadStatus() const
|
||||
{
|
||||
PRUint32 loadStatus = NS_IMAGE_LOAD_STATUS_NONE;
|
||||
if (mImageLoader) {
|
||||
mImageLoader->GetImageLoadStatus(&loadStatus);
|
||||
}
|
||||
return loadStatus;
|
||||
}
|
||||
|
||||
void
|
||||
nsHTMLImageLoader::GetIntrinsicSize(nsSize& aSize)
|
||||
{
|
||||
if (mImageLoader) {
|
||||
mImageLoader->GetIntrinsicSize(aSize);
|
||||
} else {
|
||||
aSize.SizeTo(0, 0);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
// Note: this doesn't factor in:
|
||||
// -- the mBaseURL (it might be shared)
|
||||
// -- the mFrame (that will be counted elsewhere most likely)
|
||||
// -- the mClosure (we don't know what type it is)
|
||||
// -- the mImageLoader (it might be shared)
|
||||
void
|
||||
nsHTMLImageLoader::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
||||
{
|
||||
PRUint32 sum = sizeof(*this) - sizeof(mURLSpec) - sizeof(mURL);
|
||||
PRUint32 ss;
|
||||
mURLSpec.SizeOf(aHandler, &ss); sum += ss;
|
||||
mURL.SizeOf(aHandler, &ss); sum += ss;
|
||||
*aResult = sum;
|
||||
}
|
||||
#endif
|
||||
@ -1,161 +0,0 @@
|
||||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* 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 the Initial Developer are Copyright (C) 1998
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
#ifndef nsHTMLImageLoader_h___
|
||||
#define nsHTMLImageLoader_h___
|
||||
|
||||
#include "nsString.h"
|
||||
#include "nsIPresContext.h"
|
||||
#include "nsSize.h"
|
||||
|
||||
class nsIFrame;
|
||||
class nsImageMap;
|
||||
class nsIImage;
|
||||
class nsIURI;
|
||||
class nsISizeOfHandler;
|
||||
struct nsHTMLReflowState;
|
||||
struct nsHTMLReflowMetrics;
|
||||
struct nsSize;
|
||||
|
||||
class nsHTMLImageLoader;
|
||||
typedef nsresult (*nsHTMLImageLoaderCB)(nsIPresContext* aPresContext,
|
||||
nsHTMLImageLoader* aLoader,
|
||||
nsIFrame* aFrame,
|
||||
void* aClosure,
|
||||
PRUint32 aStatus);
|
||||
|
||||
/**
|
||||
* HTML image loader. This is designed to encapsulate the loading
|
||||
* and sizing process of html images (basically so that the logic
|
||||
* can be reused in the image button form control code and the html
|
||||
* image layout code).
|
||||
*/
|
||||
class nsHTMLImageLoader {
|
||||
public:
|
||||
nsHTMLImageLoader();
|
||||
~nsHTMLImageLoader();
|
||||
|
||||
void Init(nsIFrame* aFrame, nsHTMLImageLoaderCB aCallBack, void* aClosure,
|
||||
nsIURI* aBaseURL, const nsString& aURLSpec);
|
||||
|
||||
nsIImage* GetImage();
|
||||
|
||||
void GetURLSpec(nsString& aResult) {
|
||||
aResult = mURLSpec;
|
||||
}
|
||||
|
||||
void UpdateURLSpec(nsIPresContext* aPresContext,
|
||||
const nsString& aNewSpec);
|
||||
|
||||
// Stop the current image load request from loading
|
||||
void StopLoadImage(nsIPresContext* aPresContext);
|
||||
|
||||
// Stop all image load requests from loading
|
||||
void StopAllLoadImages(nsIPresContext* aPresContext);
|
||||
|
||||
// Get the desired size for the image. If aReflowState is not null
|
||||
// then the image will be scaled to fit the reflow
|
||||
// constraints. Otherwise, the image will be left at its intrinsic
|
||||
// size.
|
||||
PRBool GetDesiredSize(nsIPresContext* aPresContext,
|
||||
const nsHTMLReflowState* aReflowState,
|
||||
nsHTMLReflowMetrics& aDesiredSize);
|
||||
|
||||
PRUint32 GetLoadStatus() const;
|
||||
|
||||
PRBool GetLoadImageFailed() const;
|
||||
|
||||
PRBool IsImageSizeKnown() const {
|
||||
return mFlags.mHaveComputedSize;
|
||||
}
|
||||
|
||||
// Get the intrinsic (natural) size for the image. Returns 0,0 if
|
||||
// the dimensions are not known
|
||||
void GetIntrinsicSize(nsSize& aSize);
|
||||
void GetNaturalImageSize(PRUint32* naturalWidth, PRUint32* naturalHeight);
|
||||
|
||||
#ifdef DEBUG
|
||||
void SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
|
||||
#endif
|
||||
|
||||
protected:
|
||||
static nsresult ImageLoadCB(nsIPresContext* aPresContext,
|
||||
nsIFrameImageLoader* aLoader,
|
||||
nsIFrame* aFrame,
|
||||
void* aClosure,
|
||||
PRUint32 aStatus);
|
||||
|
||||
void Update(nsIPresContext* aPresContext,
|
||||
nsIFrame* aFrame,
|
||||
PRUint32 aStatus);
|
||||
|
||||
void SetURL(const nsString& aNewSpec);
|
||||
|
||||
nsresult StartLoadImage(nsIPresContext* aPresContext);
|
||||
|
||||
nsIURI* mBaseURL;
|
||||
nsIFrame* mFrame;
|
||||
nsHTMLImageLoaderCB mCallBack;
|
||||
void* mClosure;
|
||||
|
||||
nsString mURLSpec;
|
||||
nsString mURL;
|
||||
|
||||
nsIFrameImageLoader* mImageLoader;
|
||||
|
||||
public:
|
||||
struct _indFlags {
|
||||
PRUint32 mLoadImageFailed : 1;
|
||||
PRUint32 mHaveIntrinsicImageSize : 1;
|
||||
PRUint32 mNeedIntrinsicImageSize : 1;
|
||||
PRUint32 mAutoImageSize : 1;
|
||||
PRUint32 mHaveComputedSize : 1;
|
||||
PRUint32 mSquelchCallback : 1;
|
||||
PRUint32 mNeedSizeNotification : 1;
|
||||
PRUint32 mInRecalcMode : 1; // a special flag used only in very rare circumstances, see nsHTMLImageLoader::GetDesiredSize
|
||||
} ;
|
||||
|
||||
protected:
|
||||
union {
|
||||
PRUint32 mAllFlags;
|
||||
_indFlags mFlags;
|
||||
};
|
||||
|
||||
nsSize mIntrinsicImageSize;
|
||||
nsSize mComputedImageSize;
|
||||
};
|
||||
|
||||
#endif /* nsHTMLImageLoader_h___ */
|
||||
Loading…
x
Reference in New Issue
Block a user