gecko-dev/layout/generic/nsVideoFrame.h

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 * 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
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 * 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.
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 * Contributor(s):
 *  Chris Double <chris.double@double.co.nz>
 *
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/* rendering object for the HTML <video> element */

#ifndef nsVideoFrame_h___
#define nsVideoFrame_h___

#include "nsContainerFrame.h"
#include "nsString.h"
#include "nsAString.h"
#include "nsPresContext.h"
#include "nsIIOService.h"
#include "nsITimer.h"
#include "nsTArray.h"
#include "nsIAnonymousContentCreator.h"

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

class nsVideoFrame : public nsContainerFrame, public nsIAnonymousContentCreator
{
public:
  nsVideoFrame(nsStyleContext* aContext);

  NS_DECL_QUERYFRAME
  
  NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                              const nsRect&           aDirtyRect,
                              const nsDisplayListSet& aLists);

  void PaintVideo(nsIRenderingContext& aRenderingContext,
                   const nsRect& aDirtyRect, nsPoint aPt);
                              
  /* get the size of the video's display */
  nsSize GetIntrinsicSize(nsIRenderingContext *aRenderingContext);
  virtual nsSize GetIntrinsicRatio();
  virtual nsSize ComputeSize(nsIRenderingContext *aRenderingContext,
                             nsSize aCBSize, nscoord aAvailableWidth,
                             nsSize aMargin, nsSize aBorder, nsSize aPadding,
                             PRBool aShrinkWrap);
  virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
  virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
  virtual void Destroy();
  virtual PRBool IsLeaf() const;

  NS_IMETHOD Reflow(nsPresContext*          aPresContext,
                    nsHTMLReflowMetrics&     aDesiredSize,
                    const nsHTMLReflowState& aReflowState,
                    nsReflowStatus&          aStatus);

#ifdef ACCESSIBILITY
  NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
#endif

  virtual nsIAtom* GetType() const;

  virtual PRBool IsFrameOfType(PRUint32 aFlags) const
  {
    return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
  }
  
  virtual nsresult CreateAnonymousContent(nsTArray<nsIContent*>& aElements);

#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif

protected:
  // Returns true if there is video data to render. Can return false
  // when we're the frame for an audio element.
  PRBool HasVideoData();

  virtual ~nsVideoFrame();

  nsMargin mBorderPadding;
  nsCOMPtr<nsIContent> mVideoControls;
};

#endif /* nsVideoFrame_h___ */