зеркало из https://github.com/mozilla/gecko-dev.git
137 строки
4.9 KiB
C++
137 строки
4.9 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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#ifndef LAYOUT_SVG_SVGPATTERNFRAME_H_
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#define LAYOUT_SVG_SVGPATTERNFRAME_H_
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#include "mozilla/Attributes.h"
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#include "gfxMatrix.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/SVGPaintServerFrame.h"
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#include "mozilla/UniquePtr.h"
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class nsIFrame;
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namespace mozilla {
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class PresShell;
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class SVGAnimatedLength;
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class SVGAnimatedPreserveAspectRatio;
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class SVGAnimatedTransformList;
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class SVGAnimatedViewBox;
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class SVGGeometryFrame;
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} // namespace mozilla
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nsIFrame* NS_NewSVGPatternFrame(mozilla::PresShell* aPresShell,
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mozilla::ComputedStyle* aStyle);
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namespace mozilla {
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class SVGPatternFrame final : public SVGPaintServerFrame {
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using SourceSurface = gfx::SourceSurface;
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public:
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NS_DECL_FRAMEARENA_HELPERS(SVGPatternFrame)
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NS_DECL_QUERYFRAME
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friend nsIFrame* ::NS_NewSVGPatternFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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explicit SVGPatternFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
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// SVGPaintServerFrame methods:
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virtual already_AddRefed<gfxPattern> GetPaintServerPattern(
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nsIFrame* aSource, const DrawTarget* aDrawTarget,
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const gfxMatrix& aContextMatrix, StyleSVGPaint nsStyleSVG::*aFillOrStroke,
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float aGraphicOpacity, imgDrawingParams& aImgParams,
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const gfxRect* aOverrideBounds) override;
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public:
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// SVGContainerFrame methods:
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virtual gfxMatrix GetCanvasTM() override;
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// nsIFrame interface:
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virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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#ifdef DEBUG
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virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) 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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return MakeFrameName(u"SVGPattern"_ns, aResult);
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}
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#endif // DEBUG
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protected:
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/**
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* Parses this frame's href and - if it references another pattern - returns
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* it. It also makes this frame a rendering observer of the specified ID.
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*/
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SVGPatternFrame* GetReferencedPattern();
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// Accessors to lookup pattern attributes
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uint16_t GetEnumValue(uint32_t aIndex, nsIContent* aDefault);
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uint16_t GetEnumValue(uint32_t aIndex) {
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return GetEnumValue(aIndex, mContent);
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}
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SVGAnimatedTransformList* GetPatternTransformList(nsIContent* aDefault);
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gfxMatrix GetPatternTransform();
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const SVGAnimatedViewBox& GetViewBox(nsIContent* aDefault);
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const SVGAnimatedViewBox& GetViewBox() { return GetViewBox(mContent); }
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const SVGAnimatedPreserveAspectRatio& GetPreserveAspectRatio(
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nsIContent* aDefault);
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const SVGAnimatedPreserveAspectRatio& GetPreserveAspectRatio() {
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return GetPreserveAspectRatio(mContent);
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}
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const SVGAnimatedLength* GetLengthValue(uint32_t aIndex,
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nsIContent* aDefault);
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const SVGAnimatedLength* GetLengthValue(uint32_t aIndex) {
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return GetLengthValue(aIndex, mContent);
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}
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already_AddRefed<SourceSurface> PaintPattern(
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const DrawTarget* aDrawTarget, Matrix* patternMatrix,
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const Matrix& aContextMatrix, nsIFrame* aSource,
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StyleSVGPaint nsStyleSVG::*aFillOrStroke, float aGraphicOpacity,
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const gfxRect* aOverrideBounds, imgDrawingParams& aImgParams);
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/**
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* A <pattern> element may reference another <pattern> element using
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* xlink:href and, if it doesn't have any child content of its own, then it
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* will "inherit" the children of the referenced pattern (which may itself be
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* inheriting its children if it references another <pattern>). This
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* function returns this SVGPatternFrame or the first pattern along the
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* reference chain (if there is one) to have children.
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*/
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SVGPatternFrame* GetPatternWithChildren();
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gfxRect GetPatternRect(uint16_t aPatternUnits, const gfxRect& bbox,
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const Matrix& aTargetCTM, nsIFrame* aTarget);
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gfxMatrix ConstructCTM(const SVGAnimatedViewBox& aViewBox,
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uint16_t aPatternContentUnits, uint16_t aPatternUnits,
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const gfxRect& callerBBox, const Matrix& callerCTM,
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nsIFrame* aTarget);
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private:
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// this is a *temporary* reference to the frame of the element currently
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// referencing our pattern. This must be temporary because different
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// referencing frames will all reference this one frame
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SVGGeometryFrame* mSource;
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UniquePtr<gfxMatrix> mCTM;
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protected:
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// This flag is used to detect loops in xlink:href processing
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bool mLoopFlag;
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bool mNoHRefURI;
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};
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} // namespace mozilla
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#endif // LAYOUT_SVG_SVGPATTERNFRAME_H_
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