зеркало из https://github.com/mozilla/gecko-dev.git
144 строки
4.9 KiB
C++
144 строки
4.9 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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/* 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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/* 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 "mozilla/Attributes.h"
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#include "nsContainerFrame.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsTArrayForwardDeclare.h"
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#include "FrameLayerBuilder.h"
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namespace mozilla {
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namespace layers {
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class Layer;
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class LayerManager;
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} // namespace layers
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} // namespace mozilla
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class nsAString;
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class nsPresContext;
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class nsDisplayItem;
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class nsVideoFrame : public nsContainerFrame
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, public nsIAnonymousContentCreator
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{
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public:
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template <typename T> using Maybe = mozilla::Maybe<T>;
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using Nothing = mozilla::Nothing;
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using Visibility = mozilla::Visibility;
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typedef mozilla::layers::Layer Layer;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
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explicit nsVideoFrame(nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsVideoFrame)
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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nsresult AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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void OnVisibilityChange(Visibility aNewVisibility,
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const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) override;
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/* get the size of the video's display */
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nsSize GetVideoIntrinsicSize(gfxContext *aRenderingContext);
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nsSize GetIntrinsicRatio() override;
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mozilla::LogicalSize
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ComputeSize(gfxContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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ComputeSizeFlags aFlags) override;
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nscoord GetMinISize(gfxContext *aRenderingContext) override;
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nscoord GetPrefISize(gfxContext *aRenderingContext) override;
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void DestroyFrom(nsIFrame* aDestructRoot) override;
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void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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#ifdef ACCESSIBILITY
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mozilla::a11y::AccType AccessibleType() override;
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#endif
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bool IsFrameOfType(uint32_t aFlags) const override
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{
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return nsSplittableFrame::IsFrameOfType(aFlags &
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~(nsIFrame::eReplaced | nsIFrame::eReplacedSizing));
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}
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nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
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void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
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uint32_t aFilters) override;
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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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nsIContent *GetCaptionOverlay() { return mCaptionDiv; }
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nsIContent *GetVideoControls() { return mVideoControls; }
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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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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const ContainerLayerParameters& aContainerParameters);
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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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void UpdatePosterSource(bool aNotify);
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// Notify the mediaElement that the mCaptionDiv was created.
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void UpdateTextTrack();
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virtual ~nsVideoFrame();
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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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// Anonymous child which is the text track caption display div.
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nsCOMPtr<nsIContent> mCaptionDiv;
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};
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#endif /* nsVideoFrame_h___ */
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