pjs/layout/generic/nsVideoFrame.h

152 строки
5.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 code.
*
* The Initial Developer of the Original Code is the Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Double <chris.double@double.co.nz>
*
* 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* rendering object for the HTML <video> element */
#ifndef nsVideoFrame_h___
#define nsVideoFrame_h___
#include "nsContainerFrame.h"
#include "nsString.h"
#include "nsAString.h"
#include "nsIIOService.h"
#include "nsITimer.h"
#include "nsTArray.h"
#include "nsIAnonymousContentCreator.h"
#include "Layers.h"
#include "ImageLayers.h"
class nsPresContext;
class nsDisplayItem;
nsIFrame* NS_NewVideoFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
class nsVideoFrame : public nsContainerFrame, public nsIAnonymousContentCreator
{
public:
typedef mozilla::layers::Layer Layer;
typedef mozilla::layers::LayerManager LayerManager;
nsVideoFrame(nsStyleContext* aContext);
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType);
/* get the size of the video's display */
nsSize GetVideoIntrinsicSize(nsRenderingContext *aRenderingContext);
virtual nsSize GetIntrinsicRatio();
virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
bool aShrinkWrap);
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
virtual void DestroyFrom(nsIFrame* aDestructRoot);
virtual bool IsLeaf() const;
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
#ifdef ACCESSIBILITY
virtual already_AddRefed<nsAccessible> CreateAccessible();
#endif
virtual nsIAtom* GetType() const;
virtual bool IsFrameOfType(PRUint32 aFlags) const
{
return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
}
virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements);
virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
PRUint32 aFilters);
nsIContent* GetPosterImage() { return mPosterImage; }
// Returns true if we should display the poster. Note that once we show
// a video frame, the poster will never be displayed again.
bool ShouldDisplayPoster();
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
LayerManager* aManager,
nsDisplayItem* aItem);
protected:
// Returns true if we're rendering for a video element. We still create
// nsVideoFrame to render controls for an audio element.
bool HasVideoElement();
// Returns true if there is video data to render. Can return false
// when we're the frame for an audio element, or we've created a video
// element for a media which is audio-only.
bool HasVideoData();
// Sets the mPosterImage's src attribute to be the video's poster attribute,
// if we're the frame for a video element. Only call on frames for video
// elements, not for frames for audio elements.
nsresult UpdatePosterSource(bool aNotify);
virtual ~nsVideoFrame();
nsMargin mBorderPadding;
// Anonymous child which is bound via XBL to the video controls.
nsCOMPtr<nsIContent> mVideoControls;
// Anonymous child which is the image element of the poster frame.
nsCOMPtr<nsIContent> mPosterImage;
};
#endif /* nsVideoFrame_h___ */