155 lines
5.3 KiB
C++
155 lines
5.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 __NS_SVGPATTERNFRAME_H__
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#define __NS_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 "nsAutoPtr.h"
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#include "nsSVGPaintServerFrame.h"
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class nsIFrame;
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class nsSVGLength2;
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class nsSVGPathGeometryFrame;
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class nsSVGViewBox;
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namespace mozilla {
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class SVGAnimatedPreserveAspectRatio;
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class nsSVGAnimatedTransformList;
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} // namespace mozilla
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/**
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* Patterns can refer to other patterns. We create an nsSVGPaintingProperty
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* with property type nsGkAtoms::href to track the referenced pattern.
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*/
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class nsSVGPatternFrame : public nsSVGPaintServerFrame
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{
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typedef mozilla::gfx::SourceSurface SourceSurface;
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public:
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NS_DECL_FRAMEARENA_HELPERS
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friend nsIFrame* NS_NewSVGPatternFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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explicit nsSVGPatternFrame(nsStyleContext* aContext);
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// nsSVGPaintServerFrame methods:
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virtual already_AddRefed<gfxPattern>
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GetPaintServerPattern(nsIFrame *aSource,
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const DrawTarget* aDrawTarget,
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const gfxMatrix& aContextMatrix,
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nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
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float aOpacity,
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const gfxRect *aOverrideBounds) override;
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public:
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typedef mozilla::SVGAnimatedPreserveAspectRatio SVGAnimatedPreserveAspectRatio;
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// nsSVGContainerFrame 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,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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#ifdef DEBUG
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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#endif
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::svgPatternFrame
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*/
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virtual nsIAtom* GetType() const override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override
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{
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return MakeFrameName(NS_LITERAL_STRING("SVGPattern"), aResult);
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}
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#endif // DEBUG
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protected:
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// Internal methods for handling referenced patterns
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class AutoPatternReferencer;
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nsSVGPatternFrame* GetReferencedPattern();
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nsSVGPatternFrame* GetReferencedPatternIfNotInUse();
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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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{
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return GetEnumValue(aIndex, mContent);
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}
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mozilla::nsSVGAnimatedTransformList* GetPatternTransformList(
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nsIContent* aDefault);
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gfxMatrix GetPatternTransform();
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const nsSVGViewBox &GetViewBox(nsIContent *aDefault);
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const nsSVGViewBox &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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{
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return GetPreserveAspectRatio(mContent);
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}
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const nsSVGLength2 *GetLengthValue(uint32_t aIndex, nsIContent *aDefault);
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const nsSVGLength2 *GetLengthValue(uint32_t aIndex)
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{
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return GetLengthValue(aIndex, mContent);
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}
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already_AddRefed<SourceSurface>
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PaintPattern(const DrawTarget* aDrawTarget,
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Matrix *patternMatrix,
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const Matrix &aContextMatrix,
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nsIFrame *aSource,
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nsStyleSVGPaint nsStyleSVG::*aFillOrStroke,
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float aGraphicOpacity,
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const gfxRect *aOverrideBounds);
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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 nsSVGPatternFrame 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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nsSVGPatternFrame* GetPatternWithChildren();
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gfxRect GetPatternRect(uint16_t aPatternUnits,
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const gfxRect &bbox,
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const Matrix &callerCTM,
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nsIFrame *aTarget);
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gfxMatrix ConstructCTM(const nsSVGViewBox& aViewBox,
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uint16_t aPatternContentUnits,
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uint16_t aPatternUnits,
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const gfxRect &callerBBox,
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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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nsSVGPathGeometryFrame *mSource;
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nsAutoPtr<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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#endif
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