gecko-dev/layout/svg/nsSVGPatternFrame.h

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