/* -*- 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"
namespace mozilla {
class PresShell;
namespace layers {
class CanvasRenderer;
class Layer;
class LayerManager;
class WebRenderCanvasData;
}
// namespace layers
}
// namespace mozilla
class nsPresContext;
nsIFrame* NS_NewHTMLCanvasFrame(mozilla::PresShell* aPresShell,
mozilla::ComputedStyle* aStyle);
class nsHTMLCanvasFrame final :
public nsContainerFrame {
public:
typedef mozilla::layers::CanvasRenderer CanvasRenderer;
typedef mozilla::layers::LayerManager LayerManager;
typedef mozilla::layers::WebRenderCanvasData WebRenderCanvasData;
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS(nsHTMLCanvasFrame)
nsHTMLCanvasFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID) {}
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
void Destroy(DestroyContext&) override;
bool UpdateWebRenderCanvasData(nsDisplayListBuilder* aBuilder,
WebRenderCanvasData* aCanvasData);
// Get the size of the canvas's image in CSS pixels.
mozilla::CSSIntSize GetCanvasSize()
const;
nscoord IntrinsicISize(
const mozilla::IntrinsicSizeInput& aInput,
mozilla::IntrinsicISizeType aType) override;
virtual mozilla::IntrinsicSize GetIntrinsicSize() override;
mozilla::AspectRatio GetIntrinsicRatio()
const override;
void UnionChildOverflow(mozilla::OverflowAreas&,
bool aAsIfScrolled) override;
SizeComputationResult ComputeSize(
gfxContext* aRenderingContext, mozilla::WritingMode aWM,
const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
const mozilla::LogicalSize& aMargin,
const mozilla::LogicalSize& aBorderPadding,
const mozilla::StyleSizeOverrides& aSizeOverrides,
mozilla::ComputeSizeFlags aFlags) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
#ifdef ACCESSIBILITY
virtual mozilla::a11y::AccType AccessibleType() override;
#endif
#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();
};
#endif /* nsHTMLCanvasFrame_h___ */
