forked from mirrors/gecko-dev
109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "nsStringFwd.h"
|
|
#include "FrameLayerBuilder.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
class Layer;
|
|
class LayerManager;
|
|
class WebRenderCanvasData;
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
class nsPresContext;
|
|
class nsDisplayItem;
|
|
|
|
nsIFrame* NS_NewHTMLCanvasFrame(nsIPresShell* aPresShell,
|
|
mozilla::ComputedStyle* aStyle);
|
|
|
|
class nsHTMLCanvasFrame final : public nsContainerFrame {
|
|
public:
|
|
typedef mozilla::layers::CanvasRenderer CanvasRenderer;
|
|
typedef mozilla::layers::Layer Layer;
|
|
typedef mozilla::layers::LayerManager LayerManager;
|
|
typedef mozilla::layers::WebRenderCanvasData WebRenderCanvasData;
|
|
typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
|
|
|
|
NS_DECL_QUERYFRAME
|
|
NS_DECL_FRAMEARENA_HELPERS(nsHTMLCanvasFrame)
|
|
|
|
explicit nsHTMLCanvasFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
|
|
: nsContainerFrame(aStyle, aPresContext, kClassID),
|
|
mBorderPadding(GetWritingMode()) {}
|
|
|
|
virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) override;
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists) override;
|
|
|
|
already_AddRefed<Layer> BuildLayer(
|
|
nsDisplayListBuilder* aBuilder, LayerManager* aManager,
|
|
nsDisplayItem* aItem,
|
|
const ContainerLayerParameters& aContainerParameters);
|
|
|
|
bool UpdateWebRenderCanvasData(nsDisplayListBuilder* aBuilder,
|
|
WebRenderCanvasData* aCanvasData);
|
|
|
|
/* get the size of the canvas's image */
|
|
nsIntSize GetCanvasSize();
|
|
|
|
virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
|
|
virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
|
|
virtual mozilla::IntrinsicSize GetIntrinsicSize() override;
|
|
virtual nsSize GetIntrinsicRatio() override;
|
|
|
|
virtual mozilla::LogicalSize ComputeSize(
|
|
gfxContext* 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 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();
|
|
}
|
|
|
|
// Return the ::-moz-html-canvas-content anonymous box.
|
|
void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
|
|
|
|
protected:
|
|
virtual ~nsHTMLCanvasFrame();
|
|
|
|
nscoord GetContinuationOffset(nscoord* aWidth = 0) const;
|
|
|
|
mozilla::LogicalMargin mBorderPadding;
|
|
};
|
|
|
|
#endif /* nsHTMLCanvasFrame_h___ */
|