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26a6db6fb1
This patch changes the signature to `GetMinISize()`, `GetPrefISize()`, `IntrinsicISize` by adding a helper struct as a preparation. Then we can just add more data such as a percentage basis to the struct without altering the signature in the future. When passing `IntrinsicSizeInput` struct down to another helper method, we generally just pass the original one if the method is computing the intrinsic size of our own or our anonymous children. If the method is computing our children's intrinsic contribution, we'll need to create a brand new `IntrinsicSizeInput` for our children. Differential Revision: https://phabricator.services.mozilla.com/D219521
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* rendering object for the HTML <canvas> element */
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#ifndef nsHTMLCanvasFrame_h___
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#define nsHTMLCanvasFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsContainerFrame.h"
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#include "nsStringFwd.h"
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namespace mozilla {
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class PresShell;
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namespace layers {
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class CanvasRenderer;
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class Layer;
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class LayerManager;
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class WebRenderCanvasData;
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} // namespace layers
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} // namespace mozilla
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class nsPresContext;
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nsIFrame* NS_NewHTMLCanvasFrame(mozilla::PresShell* aPresShell,
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mozilla::ComputedStyle* aStyle);
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class nsHTMLCanvasFrame final : public nsContainerFrame {
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public:
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typedef mozilla::layers::CanvasRenderer CanvasRenderer;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::layers::WebRenderCanvasData WebRenderCanvasData;
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsHTMLCanvasFrame)
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nsHTMLCanvasFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsContainerFrame(aStyle, aPresContext, kClassID) {}
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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void Destroy(DestroyContext&) override;
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bool UpdateWebRenderCanvasData(nsDisplayListBuilder* aBuilder,
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WebRenderCanvasData* aCanvasData);
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// Get the size of the canvas's image in CSS pixels.
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mozilla::CSSIntSize GetCanvasSize() const;
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nscoord IntrinsicISize(const mozilla::IntrinsicSizeInput& aInput,
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mozilla::IntrinsicISizeType aType) override;
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virtual mozilla::IntrinsicSize GetIntrinsicSize() override;
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mozilla::AspectRatio GetIntrinsicRatio() const override;
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void UnionChildOverflow(mozilla::OverflowAreas&, bool aAsIfScrolled) override;
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SizeComputationResult ComputeSize(
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gfxContext* aRenderingContext, mozilla::WritingMode aWM,
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const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorderPadding,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlags) override;
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virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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#ifdef ACCESSIBILITY
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virtual mozilla::a11y::AccType AccessibleType() override;
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#endif
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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// Inserted child content gets its frames parented by our child block
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virtual nsContainerFrame* GetContentInsertionFrame() override {
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return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
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}
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// Return the ::-moz-html-canvas-content anonymous box.
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void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
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protected:
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virtual ~nsHTMLCanvasFrame();
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};
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#endif /* nsHTMLCanvasFrame_h___ */
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