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00df7e7328
Multipart images send a size available notification for each part (even if the size is the same). We only need to make updates if the size changes. (In the future we may not support size changing in multipart images; our current support may be very buggy and incomplete anyways.)
868 lines
25 KiB
C++
868 lines
25 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ImageDocument.h"
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#include "mozilla/dom/ImageDocumentBinding.h"
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#include "mozilla/dom/HTMLImageElement.h"
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#include "nsRect.h"
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#include "nsIImageLoadingContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsDocShell.h"
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#include "nsIDocumentInlines.h"
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#include "nsDOMTokenList.h"
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#include "nsIDOMHTMLImageElement.h"
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#include "nsIDOMEvent.h"
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#include "nsIDOMKeyEvent.h"
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#include "nsIDOMMouseEvent.h"
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#include "nsIDOMEventListener.h"
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#include "nsIFrame.h"
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#include "nsGkAtoms.h"
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#include "imgIRequest.h"
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#include "imgILoader.h"
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#include "imgIContainer.h"
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#include "imgINotificationObserver.h"
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#include "nsIPresShell.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsIChannel.h"
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#include "nsIContentPolicy.h"
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#include "nsContentPolicyUtils.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMHTMLElement.h"
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#include "nsError.h"
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#include "nsURILoader.h"
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#include "nsIDocShell.h"
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#include "nsIContentViewer.h"
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#include "nsThreadUtils.h"
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#include "nsIScrollableFrame.h"
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#include "nsContentUtils.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/Preferences.h"
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#include <algorithm>
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#define AUTOMATIC_IMAGE_RESIZING_PREF "browser.enable_automatic_image_resizing"
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#define CLICK_IMAGE_RESIZING_PREF "browser.enable_click_image_resizing"
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//XXX A hack needed for Firefox's site specific zoom.
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#define SITE_SPECIFIC_ZOOM "browser.zoom.siteSpecific"
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namespace mozilla {
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namespace dom {
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class ImageListener : public MediaDocumentStreamListener
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{
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public:
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NS_DECL_NSIREQUESTOBSERVER
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explicit ImageListener(ImageDocument* aDocument);
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virtual ~ImageListener();
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};
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ImageListener::ImageListener(ImageDocument* aDocument)
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: MediaDocumentStreamListener(aDocument)
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{
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}
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ImageListener::~ImageListener()
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{
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}
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NS_IMETHODIMP
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ImageListener::OnStartRequest(nsIRequest* request, nsISupports *ctxt)
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{
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NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
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ImageDocument *imgDoc = static_cast<ImageDocument*>(mDocument.get());
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nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
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if (!channel) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsPIDOMWindowOuter> domWindow = imgDoc->GetWindow();
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NS_ENSURE_TRUE(domWindow, NS_ERROR_UNEXPECTED);
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// Do a ShouldProcess check to see whether to keep loading the image.
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nsCOMPtr<nsIURI> channelURI;
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channel->GetURI(getter_AddRefs(channelURI));
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nsAutoCString mimeType;
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channel->GetContentType(mimeType);
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nsIScriptSecurityManager* secMan = nsContentUtils::GetSecurityManager();
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nsCOMPtr<nsIPrincipal> channelPrincipal;
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if (secMan) {
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secMan->GetChannelResultPrincipal(channel, getter_AddRefs(channelPrincipal));
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}
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int16_t decision = nsIContentPolicy::ACCEPT;
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nsresult rv = NS_CheckContentProcessPolicy(nsIContentPolicy::TYPE_INTERNAL_IMAGE,
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channelURI,
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channelPrincipal,
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domWindow->GetFrameElementInternal(),
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mimeType,
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nullptr,
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&decision,
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nsContentUtils::GetContentPolicy(),
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secMan);
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if (NS_FAILED(rv) || NS_CP_REJECTED(decision)) {
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request->Cancel(NS_ERROR_CONTENT_BLOCKED);
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return NS_OK;
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}
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if (!imgDoc->mObservingImageLoader) {
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nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(imgDoc->mImageContent);
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NS_ENSURE_TRUE(imageLoader, NS_ERROR_UNEXPECTED);
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imageLoader->AddObserver(imgDoc);
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imgDoc->mObservingImageLoader = true;
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imageLoader->LoadImageWithChannel(channel, getter_AddRefs(mNextStream));
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}
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return MediaDocumentStreamListener::OnStartRequest(request, ctxt);
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}
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NS_IMETHODIMP
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ImageListener::OnStopRequest(nsIRequest* aRequest, nsISupports* aCtxt, nsresult aStatus)
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{
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ImageDocument* imgDoc = static_cast<ImageDocument*>(mDocument.get());
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nsContentUtils::DispatchChromeEvent(imgDoc, static_cast<nsIDocument*>(imgDoc),
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NS_LITERAL_STRING("ImageContentLoaded"),
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true, true);
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return MediaDocumentStreamListener::OnStopRequest(aRequest, aCtxt, aStatus);
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}
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ImageDocument::ImageDocument()
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: MediaDocument()
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, mVisibleWidth(0.0)
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, mVisibleHeight(0.0)
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, mImageWidth(0)
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, mImageHeight(0)
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, mResizeImageByDefault(false)
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, mClickResizingEnabled(false)
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, mImageIsOverflowingHorizontally(false)
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, mImageIsOverflowingVertically(false)
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, mImageIsResized(false)
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, mShouldResize(false)
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, mFirstResize(false)
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, mObservingImageLoader(false)
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, mOriginalZoomLevel(1.0)
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{
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}
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ImageDocument::~ImageDocument()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(ImageDocument, MediaDocument,
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mImageContent)
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NS_IMPL_ADDREF_INHERITED(ImageDocument, MediaDocument)
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NS_IMPL_RELEASE_INHERITED(ImageDocument, MediaDocument)
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NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(ImageDocument)
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NS_INTERFACE_TABLE_INHERITED(ImageDocument, nsIImageDocument,
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imgINotificationObserver, nsIDOMEventListener)
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NS_INTERFACE_TABLE_TAIL_INHERITING(MediaDocument)
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nsresult
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ImageDocument::Init()
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{
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nsresult rv = MediaDocument::Init();
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NS_ENSURE_SUCCESS(rv, rv);
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mResizeImageByDefault = Preferences::GetBool(AUTOMATIC_IMAGE_RESIZING_PREF);
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mClickResizingEnabled = Preferences::GetBool(CLICK_IMAGE_RESIZING_PREF);
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mShouldResize = mResizeImageByDefault;
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mFirstResize = true;
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return NS_OK;
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}
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JSObject*
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ImageDocument::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return ImageDocumentBinding::Wrap(aCx, this, aGivenProto);
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}
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nsresult
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ImageDocument::StartDocumentLoad(const char* aCommand,
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nsIChannel* aChannel,
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nsILoadGroup* aLoadGroup,
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nsISupports* aContainer,
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nsIStreamListener** aDocListener,
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bool aReset,
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nsIContentSink* aSink)
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{
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nsresult rv =
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MediaDocument::StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer,
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aDocListener, aReset, aSink);
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if (NS_FAILED(rv)) {
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return rv;
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}
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mOriginalZoomLevel =
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Preferences::GetBool(SITE_SPECIFIC_ZOOM, false) ? 1.0 : GetZoomLevel();
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NS_ASSERTION(aDocListener, "null aDocListener");
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*aDocListener = new ImageListener(this);
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NS_ADDREF(*aDocListener);
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return NS_OK;
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}
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void
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ImageDocument::Destroy()
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{
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if (mImageContent) {
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// Remove our event listener from the image content.
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nsCOMPtr<EventTarget> target = do_QueryInterface(mImageContent);
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target->RemoveEventListener(NS_LITERAL_STRING("load"), this, false);
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target->RemoveEventListener(NS_LITERAL_STRING("click"), this, false);
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// Break reference cycle with mImageContent, if we have one
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if (mObservingImageLoader) {
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nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mImageContent);
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if (imageLoader) {
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imageLoader->RemoveObserver(this);
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}
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}
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mImageContent = nullptr;
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}
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MediaDocument::Destroy();
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}
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void
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ImageDocument::SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject)
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{
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// If the script global object is changing, we need to unhook our event
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// listeners on the window.
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nsCOMPtr<EventTarget> target;
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if (mScriptGlobalObject &&
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aScriptGlobalObject != mScriptGlobalObject) {
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target = do_QueryInterface(mScriptGlobalObject);
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target->RemoveEventListener(NS_LITERAL_STRING("resize"), this, false);
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target->RemoveEventListener(NS_LITERAL_STRING("keypress"), this,
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false);
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}
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// Set the script global object on the superclass before doing
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// anything that might require it....
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MediaDocument::SetScriptGlobalObject(aScriptGlobalObject);
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if (aScriptGlobalObject) {
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if (!GetRootElement()) {
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// Create synthetic document
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#ifdef DEBUG
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nsresult rv =
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#endif
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CreateSyntheticDocument();
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NS_ASSERTION(NS_SUCCEEDED(rv), "failed to create synthetic document");
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target = do_QueryInterface(mImageContent);
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target->AddEventListener(NS_LITERAL_STRING("load"), this, false);
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target->AddEventListener(NS_LITERAL_STRING("click"), this, false);
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}
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target = do_QueryInterface(aScriptGlobalObject);
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target->AddEventListener(NS_LITERAL_STRING("resize"), this, false);
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target->AddEventListener(NS_LITERAL_STRING("keypress"), this, false);
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if (GetReadyStateEnum() != nsIDocument::READYSTATE_COMPLETE) {
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LinkStylesheet(NS_LITERAL_STRING("resource://gre/res/ImageDocument.css"));
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if (!nsContentUtils::IsChildOfSameType(this)) {
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LinkStylesheet(NS_LITERAL_STRING("resource://gre/res/TopLevelImageDocument.css"));
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LinkStylesheet(NS_LITERAL_STRING("chrome://global/skin/media/TopLevelImageDocument.css"));
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}
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}
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BecomeInteractive();
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}
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}
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void
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ImageDocument::OnPageShow(bool aPersisted,
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EventTarget* aDispatchStartTarget)
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{
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if (aPersisted) {
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mOriginalZoomLevel =
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Preferences::GetBool(SITE_SPECIFIC_ZOOM, false) ? 1.0 : GetZoomLevel();
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}
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RefPtr<ImageDocument> kungFuDeathGrip(this);
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UpdateSizeFromLayout();
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MediaDocument::OnPageShow(aPersisted, aDispatchStartTarget);
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}
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NS_IMETHODIMP
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ImageDocument::GetImageIsOverflowing(bool* aImageIsOverflowing)
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{
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*aImageIsOverflowing = ImageIsOverflowing();
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return NS_OK;
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}
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NS_IMETHODIMP
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ImageDocument::GetImageIsResized(bool* aImageIsResized)
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{
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*aImageIsResized = ImageIsResized();
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return NS_OK;
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}
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already_AddRefed<imgIRequest>
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ImageDocument::GetImageRequest(ErrorResult& aRv)
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{
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nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mImageContent);
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nsCOMPtr<imgIRequest> imageRequest;
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if (imageLoader) {
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aRv = imageLoader->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
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getter_AddRefs(imageRequest));
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}
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return imageRequest.forget();
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}
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NS_IMETHODIMP
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ImageDocument::GetImageRequest(imgIRequest** aImageRequest)
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{
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ErrorResult rv;
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*aImageRequest = GetImageRequest(rv).take();
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return rv.StealNSResult();
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}
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void
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ImageDocument::ShrinkToFit()
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{
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if (!mImageContent) {
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return;
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}
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if (GetZoomLevel() != mOriginalZoomLevel && mImageIsResized &&
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!nsContentUtils::IsChildOfSameType(this)) {
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// If we're zoomed, so that we don't maintain the invariant that
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// mImageIsResized if and only if its displayed width/height fit in
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// mVisibleWidth/mVisibleHeight, then we may need to switch to/from the
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// overflowingVertical class here, because our viewport size may have
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// changed and we don't plan to adjust the image size to compensate. Since
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// mImageIsResized it has a "height" attribute set, and we can just get the
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// displayed image height by getting .height on the HTMLImageElement.
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HTMLImageElement* img = HTMLImageElement::FromContent(mImageContent);
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uint32_t imageHeight = img->Height();
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nsDOMTokenList* classList = img->ClassList();
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ErrorResult ignored;
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if (imageHeight > mVisibleHeight) {
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classList->Add(NS_LITERAL_STRING("overflowingVertical"), ignored);
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} else {
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classList->Remove(NS_LITERAL_STRING("overflowingVertical"), ignored);
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}
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ignored.SuppressException();
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return;
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}
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// Keep image content alive while changing the attributes.
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nsCOMPtr<Element> imageContent = mImageContent;
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nsCOMPtr<nsIDOMHTMLImageElement> image = do_QueryInterface(imageContent);
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image->SetWidth(std::max(1, NSToCoordFloor(GetRatio() * mImageWidth)));
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image->SetHeight(std::max(1, NSToCoordFloor(GetRatio() * mImageHeight)));
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// The view might have been scrolled when zooming in, scroll back to the
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// origin now that we're showing a shrunk-to-window version.
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ScrollImageTo(0, 0, false);
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if (!mImageContent) {
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// ScrollImageTo flush destroyed our content.
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return;
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}
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SetModeClass(eShrinkToFit);
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mImageIsResized = true;
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UpdateTitleAndCharset();
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}
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NS_IMETHODIMP
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ImageDocument::DOMShrinkToFit()
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{
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ShrinkToFit();
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return NS_OK;
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}
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NS_IMETHODIMP
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ImageDocument::DOMRestoreImageTo(int32_t aX, int32_t aY)
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{
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RestoreImageTo(aX, aY);
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return NS_OK;
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}
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void
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ImageDocument::ScrollImageTo(int32_t aX, int32_t aY, bool restoreImage)
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{
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float ratio = GetRatio();
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if (restoreImage) {
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RestoreImage();
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FlushPendingNotifications(FlushType::Layout);
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}
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nsCOMPtr<nsIPresShell> shell = GetShell();
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if (!shell) {
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return;
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}
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nsIScrollableFrame* sf = shell->GetRootScrollFrameAsScrollable();
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if (!sf) {
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return;
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}
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nsRect portRect = sf->GetScrollPortRect();
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sf->ScrollTo(nsPoint(nsPresContext::CSSPixelsToAppUnits(aX/ratio) - portRect.width/2,
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nsPresContext::CSSPixelsToAppUnits(aY/ratio) - portRect.height/2),
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nsIScrollableFrame::INSTANT);
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}
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void
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ImageDocument::RestoreImage()
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{
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if (!mImageContent) {
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return;
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}
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// Keep image content alive while changing the attributes.
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nsCOMPtr<Element> imageContent = mImageContent;
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imageContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::width, true);
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imageContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::height, true);
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if (ImageIsOverflowing()) {
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if (!mImageIsOverflowingVertically) {
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SetModeClass(eOverflowingHorizontalOnly);
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} else {
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SetModeClass(eOverflowingVertical);
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}
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}
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else {
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SetModeClass(eNone);
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}
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mImageIsResized = false;
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UpdateTitleAndCharset();
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}
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NS_IMETHODIMP
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ImageDocument::DOMRestoreImage()
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{
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RestoreImage();
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return NS_OK;
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}
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void
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ImageDocument::ToggleImageSize()
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{
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mShouldResize = true;
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if (mImageIsResized) {
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mShouldResize = false;
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ResetZoomLevel();
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RestoreImage();
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}
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else if (ImageIsOverflowing()) {
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ResetZoomLevel();
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ShrinkToFit();
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}
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}
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NS_IMETHODIMP
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ImageDocument::DOMToggleImageSize()
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{
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ToggleImageSize();
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return NS_OK;
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}
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NS_IMETHODIMP
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ImageDocument::Notify(imgIRequest* aRequest, int32_t aType, const nsIntRect* aData)
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{
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if (aType == imgINotificationObserver::SIZE_AVAILABLE) {
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nsCOMPtr<imgIContainer> image;
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aRequest->GetImage(getter_AddRefs(image));
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return OnSizeAvailable(aRequest, image);
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}
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// Run this using a script runner because HAS_TRANSPARENCY notifications can
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// come during painting and this will trigger invalidation.
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if (aType == imgINotificationObserver::HAS_TRANSPARENCY) {
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nsCOMPtr<nsIRunnable> runnable =
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NewRunnableMethod(this, &ImageDocument::OnHasTransparency);
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nsContentUtils::AddScriptRunner(runnable);
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}
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if (aType == imgINotificationObserver::LOAD_COMPLETE) {
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uint32_t reqStatus;
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aRequest->GetImageStatus(&reqStatus);
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nsresult status =
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reqStatus & imgIRequest::STATUS_ERROR ? NS_ERROR_FAILURE : NS_OK;
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return OnLoadComplete(aRequest, status);
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}
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return NS_OK;
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}
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void
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ImageDocument::OnHasTransparency()
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{
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if (!mImageContent || nsContentUtils::IsChildOfSameType(this)) {
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return;
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}
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nsDOMTokenList* classList = mImageContent->ClassList();
|
|
mozilla::ErrorResult rv;
|
|
classList->Add(NS_LITERAL_STRING("transparent"), rv);
|
|
}
|
|
|
|
void
|
|
ImageDocument::SetModeClass(eModeClasses mode)
|
|
{
|
|
nsDOMTokenList* classList = mImageContent->ClassList();
|
|
ErrorResult rv;
|
|
|
|
if (mode == eShrinkToFit) {
|
|
classList->Add(NS_LITERAL_STRING("shrinkToFit"), rv);
|
|
} else {
|
|
classList->Remove(NS_LITERAL_STRING("shrinkToFit"), rv);
|
|
}
|
|
|
|
if (mode == eOverflowingVertical) {
|
|
classList->Add(NS_LITERAL_STRING("overflowingVertical"), rv);
|
|
} else {
|
|
classList->Remove(NS_LITERAL_STRING("overflowingVertical"), rv);
|
|
}
|
|
|
|
if (mode == eOverflowingHorizontalOnly) {
|
|
classList->Add(NS_LITERAL_STRING("overflowingHorizontalOnly"), rv);
|
|
} else {
|
|
classList->Remove(NS_LITERAL_STRING("overflowingHorizontalOnly"), rv);
|
|
}
|
|
|
|
rv.SuppressException();
|
|
}
|
|
|
|
nsresult
|
|
ImageDocument::OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage)
|
|
{
|
|
int32_t oldWidth = mImageWidth;
|
|
int32_t oldHeight = mImageHeight;
|
|
|
|
// Styles have not yet been applied, so we don't know the final size. For now,
|
|
// default to the image's intrinsic size.
|
|
aImage->GetWidth(&mImageWidth);
|
|
aImage->GetHeight(&mImageHeight);
|
|
|
|
// Multipart images send size available for each part; ignore them if it
|
|
// doesn't change our size. (We may not even support changing size in
|
|
// multipart images in the future.)
|
|
if (oldWidth == mImageWidth && oldHeight == mImageHeight) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIRunnable> runnable =
|
|
NewRunnableMethod(this, &ImageDocument::DefaultCheckOverflowing);
|
|
nsContentUtils::AddScriptRunner(runnable);
|
|
UpdateTitleAndCharset();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
ImageDocument::OnLoadComplete(imgIRequest* aRequest, nsresult aStatus)
|
|
{
|
|
UpdateTitleAndCharset();
|
|
|
|
// mImageContent can be null if the document is already destroyed
|
|
if (NS_FAILED(aStatus) && mStringBundle && mImageContent) {
|
|
nsAutoCString src;
|
|
mDocumentURI->GetSpec(src);
|
|
NS_ConvertUTF8toUTF16 srcString(src);
|
|
const char16_t* formatString[] = { srcString.get() };
|
|
nsXPIDLString errorMsg;
|
|
NS_NAMED_LITERAL_STRING(str, "InvalidImage");
|
|
mStringBundle->FormatStringFromName(str.get(), formatString, 1,
|
|
getter_Copies(errorMsg));
|
|
|
|
mImageContent->SetAttr(kNameSpaceID_None, nsGkAtoms::alt, errorMsg, false);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
ImageDocument::HandleEvent(nsIDOMEvent* aEvent)
|
|
{
|
|
nsAutoString eventType;
|
|
aEvent->GetType(eventType);
|
|
if (eventType.EqualsLiteral("resize")) {
|
|
CheckOverflowing(false);
|
|
}
|
|
else if (eventType.EqualsLiteral("click") && mClickResizingEnabled) {
|
|
ResetZoomLevel();
|
|
mShouldResize = true;
|
|
if (mImageIsResized) {
|
|
int32_t x = 0, y = 0;
|
|
nsCOMPtr<nsIDOMMouseEvent> event(do_QueryInterface(aEvent));
|
|
if (event) {
|
|
event->GetClientX(&x);
|
|
event->GetClientY(&y);
|
|
int32_t left = 0, top = 0;
|
|
nsCOMPtr<nsIDOMHTMLElement> htmlElement =
|
|
do_QueryInterface(mImageContent);
|
|
htmlElement->GetOffsetLeft(&left);
|
|
htmlElement->GetOffsetTop(&top);
|
|
x -= left;
|
|
y -= top;
|
|
}
|
|
mShouldResize = false;
|
|
RestoreImageTo(x, y);
|
|
}
|
|
else if (ImageIsOverflowing()) {
|
|
ShrinkToFit();
|
|
}
|
|
} else if (eventType.EqualsLiteral("load")) {
|
|
UpdateSizeFromLayout();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
ImageDocument::UpdateSizeFromLayout()
|
|
{
|
|
// Pull an updated size from the content frame to account for any size
|
|
// change due to CSS properties like |image-orientation|.
|
|
if (!mImageContent) {
|
|
return;
|
|
}
|
|
|
|
nsIFrame* contentFrame = mImageContent->GetPrimaryFrame(FlushType::Frames);
|
|
if (!contentFrame) {
|
|
return;
|
|
}
|
|
|
|
nsIntSize oldSize(mImageWidth, mImageHeight);
|
|
IntrinsicSize newSize = contentFrame->GetIntrinsicSize();
|
|
|
|
if (newSize.width.GetUnit() == eStyleUnit_Coord) {
|
|
mImageWidth = nsPresContext::AppUnitsToFloatCSSPixels(newSize.width.GetCoordValue());
|
|
}
|
|
if (newSize.height.GetUnit() == eStyleUnit_Coord) {
|
|
mImageHeight = nsPresContext::AppUnitsToFloatCSSPixels(newSize.height.GetCoordValue());
|
|
}
|
|
|
|
// Ensure that our information about overflow is up-to-date if needed.
|
|
if (mImageWidth != oldSize.width || mImageHeight != oldSize.height) {
|
|
CheckOverflowing(false);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
ImageDocument::CreateSyntheticDocument()
|
|
{
|
|
// Synthesize an html document that refers to the image
|
|
nsresult rv = MediaDocument::CreateSyntheticDocument();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Add the image element
|
|
Element* body = GetBodyElement();
|
|
if (!body) {
|
|
NS_WARNING("no body on image document!");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> nodeInfo;
|
|
nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::img, nullptr,
|
|
kNameSpaceID_XHTML,
|
|
nsIDOMNode::ELEMENT_NODE);
|
|
|
|
mImageContent = NS_NewHTMLImageElement(nodeInfo.forget());
|
|
if (!mImageContent) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mImageContent);
|
|
NS_ENSURE_TRUE(imageLoader, NS_ERROR_UNEXPECTED);
|
|
|
|
nsAutoCString src;
|
|
mDocumentURI->GetSpec(src);
|
|
|
|
NS_ConvertUTF8toUTF16 srcString(src);
|
|
// Make sure not to start the image load from here...
|
|
imageLoader->SetLoadingEnabled(false);
|
|
mImageContent->SetAttr(kNameSpaceID_None, nsGkAtoms::src, srcString, false);
|
|
mImageContent->SetAttr(kNameSpaceID_None, nsGkAtoms::alt, srcString, false);
|
|
|
|
body->AppendChildTo(mImageContent, false);
|
|
imageLoader->SetLoadingEnabled(true);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
ImageDocument::CheckOverflowing(bool changeState)
|
|
{
|
|
/* Create a scope so that the style context gets destroyed before we might
|
|
* call RebuildStyleData. Also, holding onto pointers to the
|
|
* presentation through style resolution is potentially dangerous.
|
|
*/
|
|
{
|
|
nsIPresShell *shell = GetShell();
|
|
if (!shell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext *context = shell->GetPresContext();
|
|
nsRect visibleArea = context->GetVisibleArea();
|
|
|
|
mVisibleWidth = nsPresContext::AppUnitsToFloatCSSPixels(visibleArea.width);
|
|
mVisibleHeight = nsPresContext::AppUnitsToFloatCSSPixels(visibleArea.height);
|
|
}
|
|
|
|
bool imageWasOverflowing = ImageIsOverflowing();
|
|
bool imageWasOverflowingVertically = mImageIsOverflowingVertically;
|
|
mImageIsOverflowingHorizontally = mImageWidth > mVisibleWidth;
|
|
mImageIsOverflowingVertically = mImageHeight > mVisibleHeight;
|
|
bool windowBecameBigEnough = imageWasOverflowing && !ImageIsOverflowing();
|
|
bool verticalOverflowChanged =
|
|
mImageIsOverflowingVertically != imageWasOverflowingVertically;
|
|
|
|
if (changeState || mShouldResize || mFirstResize ||
|
|
windowBecameBigEnough || verticalOverflowChanged) {
|
|
if (ImageIsOverflowing() && (changeState || mShouldResize)) {
|
|
ShrinkToFit();
|
|
}
|
|
else if (mImageIsResized || mFirstResize || windowBecameBigEnough) {
|
|
RestoreImage();
|
|
} else if (!mImageIsResized && verticalOverflowChanged) {
|
|
if (mImageIsOverflowingVertically) {
|
|
SetModeClass(eOverflowingVertical);
|
|
} else {
|
|
SetModeClass(eOverflowingHorizontalOnly);
|
|
}
|
|
}
|
|
}
|
|
mFirstResize = false;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
ImageDocument::UpdateTitleAndCharset()
|
|
{
|
|
nsAutoCString typeStr;
|
|
nsCOMPtr<imgIRequest> imageRequest;
|
|
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mImageContent);
|
|
if (imageLoader) {
|
|
imageLoader->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
|
|
getter_AddRefs(imageRequest));
|
|
}
|
|
|
|
if (imageRequest) {
|
|
nsXPIDLCString mimeType;
|
|
imageRequest->GetMimeType(getter_Copies(mimeType));
|
|
ToUpperCase(mimeType);
|
|
nsXPIDLCString::const_iterator start, end;
|
|
mimeType.BeginReading(start);
|
|
mimeType.EndReading(end);
|
|
nsXPIDLCString::const_iterator iter = end;
|
|
if (FindInReadable(NS_LITERAL_CSTRING("IMAGE/"), start, iter) &&
|
|
iter != end) {
|
|
// strip out "X-" if any
|
|
if (*iter == 'X') {
|
|
++iter;
|
|
if (iter != end && *iter == '-') {
|
|
++iter;
|
|
if (iter == end) {
|
|
// looks like "IMAGE/X-" is the type?? Bail out of here.
|
|
mimeType.BeginReading(iter);
|
|
}
|
|
} else {
|
|
--iter;
|
|
}
|
|
}
|
|
typeStr = Substring(iter, end);
|
|
} else {
|
|
typeStr = mimeType;
|
|
}
|
|
}
|
|
|
|
nsXPIDLString status;
|
|
if (mImageIsResized) {
|
|
nsAutoString ratioStr;
|
|
ratioStr.AppendInt(NSToCoordFloor(GetRatio() * 100));
|
|
|
|
const char16_t* formatString[1] = { ratioStr.get() };
|
|
mStringBundle->FormatStringFromName(u"ScaledImage",
|
|
formatString, 1,
|
|
getter_Copies(status));
|
|
}
|
|
|
|
static const char* const formatNames[4] =
|
|
{
|
|
"ImageTitleWithNeitherDimensionsNorFile",
|
|
"ImageTitleWithoutDimensions",
|
|
"ImageTitleWithDimensions2",
|
|
"ImageTitleWithDimensions2AndFile",
|
|
};
|
|
|
|
MediaDocument::UpdateTitleAndCharset(typeStr, mChannel, formatNames,
|
|
mImageWidth, mImageHeight, status);
|
|
}
|
|
|
|
void
|
|
ImageDocument::ResetZoomLevel()
|
|
{
|
|
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
|
|
if (docShell) {
|
|
if (nsContentUtils::IsChildOfSameType(this)) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
docShell->GetContentViewer(getter_AddRefs(cv));
|
|
if (cv) {
|
|
cv->SetFullZoom(mOriginalZoomLevel);
|
|
}
|
|
}
|
|
}
|
|
|
|
float
|
|
ImageDocument::GetZoomLevel()
|
|
{
|
|
float zoomLevel = mOriginalZoomLevel;
|
|
nsCOMPtr<nsIDocShell> docShell(mDocumentContainer);
|
|
if (docShell) {
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
docShell->GetContentViewer(getter_AddRefs(cv));
|
|
if (cv) {
|
|
cv->GetFullZoom(&zoomLevel);
|
|
}
|
|
}
|
|
return zoomLevel;
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
nsresult
|
|
NS_NewImageDocument(nsIDocument** aResult)
|
|
{
|
|
mozilla::dom::ImageDocument* doc = new mozilla::dom::ImageDocument();
|
|
NS_ADDREF(doc);
|
|
|
|
nsresult rv = doc->Init();
|
|
if (NS_FAILED(rv)) {
|
|
NS_RELEASE(doc);
|
|
}
|
|
|
|
*aResult = doc;
|
|
|
|
return rv;
|
|
}
|