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