/* -*- 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 "FrameLayerBuilder.h" namespace mozilla { namespace layers { class Layer; class LayerManager; } // namespace layers } // namespace mozilla class nsPresContext; class nsDisplayItem; class nsAString; nsIFrame* NS_NewHTMLCanvasFrame (nsIPresShell* aPresShell, nsStyleContext* aContext); class nsHTMLCanvasFrame : public nsContainerFrame { public: typedef mozilla::layers::Layer Layer; typedef mozilla::layers::LayerManager LayerManager; typedef mozilla::ContainerLayerParameters ContainerLayerParameters; NS_DECL_QUERYFRAME_TARGET(nsHTMLCanvasFrame) NS_DECL_QUERYFRAME NS_DECL_FRAMEARENA_HELPERS explicit nsHTMLCanvasFrame(nsStyleContext* aContext) : nsContainerFrame(aContext) , mBorderPadding(GetWritingMode()) {} virtual void Init(nsIContent* aContent, nsContainerFrame* aParent, nsIFrame* aPrevInFlow) override; virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) override; already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder, LayerManager* aManager, nsDisplayItem* aItem, const ContainerLayerParameters& aContainerParameters); /* get the size of the canvas's image */ nsIntSize GetCanvasSize(); virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override; virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; virtual nsSize GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeSize(nsRenderingContext *aRenderingContext, mozilla::WritingMode aWritingMode, const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, const mozilla::LogicalSize& aMargin, const mozilla::LogicalSize& aBorder, const mozilla::LogicalSize& aPadding, ComputeSizeFlags aFlags) override; virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, const ReflowInput& aReflowInput, nsReflowStatus& aStatus) override; nsRect GetInnerArea() const; #ifdef ACCESSIBILITY virtual mozilla::a11y::AccType AccessibleType() override; #endif virtual nsIAtom* GetType() const override; virtual bool IsFrameOfType(uint32_t aFlags) const override { return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedSizing)); } #ifdef DEBUG_FRAME_DUMP virtual nsresult GetFrameName(nsAString& aResult) const override; #endif // Inserted child content gets its frames parented by our child block virtual nsContainerFrame* GetContentInsertionFrame() override { return PrincipalChildList().FirstChild()->GetContentInsertionFrame(); } protected: virtual ~nsHTMLCanvasFrame(); nscoord GetContinuationOffset(nscoord* aWidth = 0) const; mozilla::LogicalMargin mBorderPadding; }; #endif /* nsHTMLCanvasFrame_h___ */