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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* rendering object for the HTML <canvas> element */
#ifndef nsHTMLCanvasFrame_h___
#define nsHTMLCanvasFrame_h___
#include "mozilla/Attributes.h"
#include "nsContainerFrame.h"
#include "nsString.h"
#include "nsAString.h"
#include "nsIIOService.h"
#include "FrameLayerBuilder.h"
namespace mozilla {
namespace layers {
class Layer;
class LayerManager;
}
}
class nsPresContext;
class nsDisplayItem;
nsIFrame* NS_NewHTMLCanvasFrame (nsIPresShell* aPresShell, nsStyleContext* aContext);
class nsHTMLCanvasFrame : public nsContainerFrame
{
public:
typedef mozilla::layers::Layer Layer;
typedef mozilla::layers::LayerManager LayerManager;
typedef mozilla::FrameLayerBuilder::ContainerParameters ContainerParameters;
NS_DECL_FRAMEARENA_HELPERS
nsHTMLCanvasFrame(nsStyleContext* aContext) : nsContainerFrame(aContext) {}
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) MOZ_OVERRIDE;
already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
LayerManager* aManager,
nsDisplayItem* aItem,
const ContainerParameters& aContainerParameters);
/* get the size of the canvas's image */
nsIntSize GetCanvasSize();
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
virtual nsSize GetIntrinsicRatio() MOZ_OVERRIDE;
virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
uint32_t aFlags) MOZ_OVERRIDE;
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
nsRect GetInnerArea() const;
#ifdef ACCESSIBILITY
virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
#endif
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
virtual bool IsFrameOfType(uint32_t aFlags) const
{
return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
}
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
#endif
// Inserted child content gets its frames parented by our child block
virtual nsIFrame* GetContentInsertionFrame() {
return GetFirstPrincipalChild()->GetContentInsertionFrame();
}
protected:
virtual ~nsHTMLCanvasFrame();
nscoord GetContinuationOffset(nscoord* aWidth = 0) const;
nsMargin mBorderPadding;
};
#endif /* nsHTMLCanvasFrame_h___ */
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