The Tor Browser: layout/generic/nsVideoFrame.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:set ts=2 sw=2 sts=2 et cindent: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 /* rendering object for the HTML <video> element */

     9 #ifndef nsVideoFrame_h___

    10 #define nsVideoFrame_h___

    12 #include "mozilla/Attributes.h"

    13 #include "nsContainerFrame.h"

    14 #include "nsIAnonymousContentCreator.h"

    15 #include "nsTArrayForwardDeclare.h"

    16 #include "FrameLayerBuilder.h"

    18 namespace mozilla {

    19 namespace layers {

    20 class Layer;

    21 class LayerManager;

    22 }

    23 }

    25 class nsAString;

    26 class nsPresContext;

    27 class nsDisplayItem;

    29 nsIFrame* NS_NewVideoFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);

    31 class nsVideoFrame : public nsContainerFrame, public nsIAnonymousContentCreator

    32 {

    33 public:

    34   typedef mozilla::layers::Layer Layer;

    35   typedef mozilla::layers::LayerManager LayerManager;

    36   typedef mozilla::ContainerLayerParameters ContainerLayerParameters;

    38   nsVideoFrame(nsStyleContext* aContext);

    40   NS_DECL_QUERYFRAME

    41   NS_DECL_QUERYFRAME_TARGET(nsVideoFrame)

    42   NS_DECL_FRAMEARENA_HELPERS

    44   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    45                                 const nsRect&           aDirtyRect,

    46                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE;

    48   virtual nsresult AttributeChanged(int32_t aNameSpaceID,

    49                                     nsIAtom* aAttribute,

    50                                     int32_t aModType) MOZ_OVERRIDE;

    52   /* get the size of the video's display */

    53   nsSize GetVideoIntrinsicSize(nsRenderingContext *aRenderingContext);

    54   virtual nsSize GetIntrinsicRatio() MOZ_OVERRIDE;

    55   virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,

    56                              nsSize aCBSize, nscoord aAvailableWidth,

    57                              nsSize aMargin, nsSize aBorder, nsSize aPadding,

    58                              uint32_t aFlags) MOZ_OVERRIDE;

    59   virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    60   virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    61   virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;

    62   virtual bool IsLeaf() const MOZ_OVERRIDE;

    64   virtual nsresult Reflow(nsPresContext*          aPresContext,

    65                           nsHTMLReflowMetrics&     aDesiredSize,

    66                           const nsHTMLReflowState& aReflowState,

    67                           nsReflowStatus&          aStatus) MOZ_OVERRIDE;

    69 #ifdef ACCESSIBILITY

    70   virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;

    71 #endif

    73   virtual nsIAtom* GetType() const MOZ_OVERRIDE;

    75   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    76   {

    77     return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));

    78   }

    80   virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;

    81   virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,

    82                                         uint32_t aFilters) MOZ_OVERRIDE;

    84   nsIContent* GetPosterImage() { return mPosterImage; }

    86   // Returns true if we should display the poster. Note that once we show

    87   // a video frame, the poster will never be displayed again.

    88   bool ShouldDisplayPoster();

    90   nsIContent *GetCaptionOverlay() { return mCaptionDiv; }

    92 #ifdef DEBUG_FRAME_DUMP

    93   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;

    94 #endif

    96   already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,

    97                                      LayerManager* aManager,

    98                                      nsDisplayItem* aItem,

    99                                      const ContainerLayerParameters& aContainerParameters);

   101 protected:

   103   // Returns true if we're rendering for a video element. We still create

   104   // nsVideoFrame to render controls for an audio element.

   105   bool HasVideoElement();

   107   // Returns true if there is video data to render. Can return false

   108   // when we're the frame for an audio element, or we've created a video

   109   // element for a media which is audio-only.

   110   bool HasVideoData();

   112   // Sets the mPosterImage's src attribute to be the video's poster attribute,

   113   // if we're the frame for a video element. Only call on frames for video

   114   // elements, not for frames for audio elements.

   115   void UpdatePosterSource(bool aNotify);

   117   virtual ~nsVideoFrame();

   119   nsMargin mBorderPadding;

   121   // Anonymous child which is bound via XBL to the video controls.

   122   nsCOMPtr<nsIContent> mVideoControls;

   124   // Anonymous child which is the image element of the poster frame.

   125   nsCOMPtr<nsIContent> mPosterImage;

   127   // Anonymous child which is the text track caption display div.

   128   nsCOMPtr<nsIContent> mCaptionDiv;

   130 };

   132 #endif /* nsVideoFrame_h___ */

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