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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
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 *
 * Software distributed under the License is distributed on an "AS IS" basis,
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 *   Vladimir Vukicevic <vladimir@pobox.com>
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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#ifndef nsICanvasRenderingContextInternal_h___
#define nsICanvasRenderingContextInternal_h___

#include "nsISupports.h"
#include "nsPresContext.h"
#include "gfxIImageFrame.h"
#include "nsICanvasElement.h"

// {0be74436-51a3-4be3-8357-ede741750080}
#define NS_ICANVASRENDERINGCONTEXTINTERNAL_IID \
  { 0x0be74436, 0x51a3, 0x4be3, { 0x83, 0x57, 0xed, 0xe7, 0x41, 0x75, 0x00, 0x80 } }

class nsICanvasRenderingContextInternal : public nsISupports {
public:
  NS_DEFINE_STATIC_IID_ACCESSOR(NS_ICANVASRENDERINGCONTEXTINTERNAL_IID)

  // This method should NOT hold a ref to aParentCanvas; it will be called
  // with nsnull when the element is going away.
  NS_IMETHOD SetCanvasElement(nsICanvasElement* aParentCanvas) = 0;

  // Will be called whenever the target image frame changes
  NS_IMETHOD SetTargetImageFrame(gfxIImageFrame* aImageFrame) = 0;

  // Will be called whenever the element needs to be redrawn,
  // e.g. due to a Redraw on the frame.
  NS_IMETHOD UpdateImageFrame() = 0;
};

#endif /* nsICanvasRenderingContextInternal_h___ */