144 lines
5.2 KiB
C++
144 lines
5.2 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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/* 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 "nsIReflowCallback.h"
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#include "nsStringFwd.h"
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#include "nsTArrayForwardDeclare.h"
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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 nsIReflowCallback,
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public nsIAnonymousContentCreator {
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public:
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template <typename T>
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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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nsVideoFrame(ComputedStyle* aStyle, nsPresContext* aPc)
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: nsVideoFrame(aStyle, aPc, kClassID) {}
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nsVideoFrame(ComputedStyle*, nsPresContext*, ClassID);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsVideoFrame)
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void ReflowCallbackCanceled() final { mReflowCallbackPosted = false; }
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bool ReflowFinished() final;
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) final;
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nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) final;
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void OnVisibilityChange(
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Visibility aNewVisibility,
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const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) final;
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/* get the size of the video's display */
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mozilla::IntrinsicSize GetIntrinsicSize() final;
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mozilla::AspectRatio GetIntrinsicRatio() const final;
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SizeComputationResult ComputeSize(
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gfxContext* aRenderingContext, mozilla::WritingMode aWM,
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const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorderPadding,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlags) final;
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nscoord IntrinsicISize(const mozilla::IntrinsicSizeInput& aInput,
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mozilla::IntrinsicISizeType aType) final;
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void Destroy(DestroyContext&) final;
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput, nsReflowStatus& aStatus) final;
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#ifdef ACCESSIBILITY
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mozilla::a11y::AccType AccessibleType() final;
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#endif
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nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) final;
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void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
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uint32_t aFilters) final;
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mozilla::dom::Element* GetPosterImage() const { 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() const;
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nsIContent* GetCaptionOverlay() const { return mCaptionDiv; }
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nsIContent* GetVideoControls() const;
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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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protected:
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// Returns true if we're rendering for a video element. We create an
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// nsAudioFrame (which is still an nsVideoFrame) to render controls for an
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// audio element.
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bool HasVideoElement() const { return !mIsAudio; }
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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() const;
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// Get the poster image's size if there is any.
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mozilla::Maybe<nsSize> PosterImageSize() const;
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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 the image element of the poster frame.
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RefPtr<mozilla::dom::Element> 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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// Some sizes tracked for notification purposes.
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// TODO: Maybe the calling code could be rewritten to use ResizeObserver for
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// this nowadays.
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nsSize mControlsTrackedSize{-1, -1};
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nsSize mCaptionTrackedSize{-1, -1};
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bool mReflowCallbackPosted = false;
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const bool mIsAudio;
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};
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// NOTE(emilio): This class here only for the purpose of having different
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// ClassFlags for <audio> elements. This frame shouldn't contain extra logic, as
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// things are set up now, because <audio> can also use video controls etc.
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// In the future we might want to rejigger this to be less weird (e.g, an audio
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// frame might not need a caption, or text tracks, or what not).
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class nsAudioFrame final : public nsVideoFrame {
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsAudioFrame)
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nsAudioFrame(ComputedStyle*, nsPresContext*);
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virtual ~nsAudioFrame();
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};
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#endif /* nsVideoFrame_h___ */
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