зеркало из https://github.com/mozilla/gecko-dev.git
152 строки
5.6 KiB
C++
152 строки
5.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla code.
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*
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* The Initial Developer of the Original Code is the Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Double <chris.double@double.co.nz>
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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 MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* rendering object for the HTML <video> element */
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#ifndef nsVideoFrame_h___
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#define nsVideoFrame_h___
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#include "nsContainerFrame.h"
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#include "nsString.h"
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#include "nsAString.h"
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#include "nsIIOService.h"
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#include "nsITimer.h"
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#include "nsTArray.h"
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#include "nsIAnonymousContentCreator.h"
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#include "Layers.h"
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#include "ImageLayers.h"
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class nsPresContext;
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class nsDisplayItem;
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nsIFrame* NS_NewVideoFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
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class nsVideoFrame : public nsContainerFrame, public nsIAnonymousContentCreator
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{
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public:
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typedef mozilla::layers::Layer Layer;
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typedef mozilla::layers::LayerManager LayerManager;
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nsVideoFrame(nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType);
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/* get the size of the video's display */
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nsSize GetVideoIntrinsicSize(nsRenderingContext *aRenderingContext);
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virtual nsSize GetIntrinsicRatio();
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virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
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nsSize aCBSize, nscoord aAvailableWidth,
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nsSize aMargin, nsSize aBorder, nsSize aPadding,
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bool aShrinkWrap);
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virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
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virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
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virtual void DestroyFrom(nsIFrame* aDestructRoot);
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virtual bool IsLeaf() const;
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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#ifdef ACCESSIBILITY
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virtual already_AddRefed<nsAccessible> CreateAccessible();
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#endif
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virtual nsIAtom* GetType() const;
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virtual bool IsFrameOfType(PRUint32 aFlags) const
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{
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return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
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}
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virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements);
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virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
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PRUint32 aFilters);
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nsIContent* GetPosterImage() { return mPosterImage; }
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// Returns true if we should display the poster. Note that once we show
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// a video frame, the poster will never be displayed again.
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bool ShouldDisplayPoster();
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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nsDisplayItem* aItem);
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protected:
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// Returns true if we're rendering for a video element. We still create
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// nsVideoFrame to render controls for an audio element.
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bool HasVideoElement();
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// Returns true if there is video data to render. Can return false
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// when we're the frame for an audio element, or we've created a video
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// element for a media which is audio-only.
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bool HasVideoData();
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// Sets the mPosterImage's src attribute to be the video's poster attribute,
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// if we're the frame for a video element. Only call on frames for video
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// elements, not for frames for audio elements.
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nsresult UpdatePosterSource(bool aNotify);
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virtual ~nsVideoFrame();
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nsMargin mBorderPadding;
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// Anonymous child which is bound via XBL to the video controls.
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nsCOMPtr<nsIContent> mVideoControls;
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// Anonymous child which is the image element of the poster frame.
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nsCOMPtr<nsIContent> mPosterImage;
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};
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#endif /* nsVideoFrame_h___ */
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