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33041d1214
In the next patch we want to add a method called GetUnanimatedStyleContextForElementNoFlush but that's much too long. Instead it seems better to just drop 'ForElement' from all these methods since it should be fairly obvious we are getting the style context for an element given that the first argument is an element. MozReview-Commit-ID: JQKaEuCKV2F --HG-- extra : rebase_source : 3ba51f3b00d1ec7bc91102629d9c0abb88992fef
349 lines
11 KiB
C++
349 lines
11 KiB
C++
/* 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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#include "mozilla/dom/SVGPathElement.h"
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#include <algorithm>
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#include "DOMSVGPathSeg.h"
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#include "DOMSVGPathSegList.h"
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#include "gfx2DGlue.h"
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#include "gfxPlatform.h"
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#include "mozilla/dom/SVGPathElementBinding.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "nsCOMPtr.h"
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#include "nsComputedDOMStyle.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsStyleStruct.h"
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#include "SVGContentUtils.h"
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Path)
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace dom {
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JSObject*
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SVGPathElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGPathElementBinding::Wrap(aCx, this, aGivenProto);
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}
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//----------------------------------------------------------------------
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// Implementation
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SVGPathElement::SVGPathElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: SVGPathElementBase(aNodeInfo)
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{
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}
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//----------------------------------------------------------------------
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// memory reporting methods
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size_t
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SVGPathElement::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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return SVGPathElementBase::SizeOfExcludingThis(aMallocSizeOf) +
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mD.SizeOfExcludingThis(aMallocSizeOf);
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}
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//----------------------------------------------------------------------
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// nsIDOMNode methods
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGPathElement)
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uint32_t
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SVGPathElement::GetPathSegAtLength(float distance)
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{
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return mD.GetAnimValue().GetPathSegAtLength(distance);
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}
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already_AddRefed<DOMSVGPathSegClosePath>
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SVGPathElement::CreateSVGPathSegClosePath()
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{
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RefPtr<DOMSVGPathSegClosePath> pathSeg = new DOMSVGPathSegClosePath();
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegMovetoAbs>
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SVGPathElement::CreateSVGPathSegMovetoAbs(float x, float y)
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{
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RefPtr<DOMSVGPathSegMovetoAbs> pathSeg = new DOMSVGPathSegMovetoAbs(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegMovetoRel>
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SVGPathElement::CreateSVGPathSegMovetoRel(float x, float y)
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{
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RefPtr<DOMSVGPathSegMovetoRel> pathSeg = new DOMSVGPathSegMovetoRel(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoAbs>
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SVGPathElement::CreateSVGPathSegLinetoAbs(float x, float y)
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{
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RefPtr<DOMSVGPathSegLinetoAbs> pathSeg = new DOMSVGPathSegLinetoAbs(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoRel>
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SVGPathElement::CreateSVGPathSegLinetoRel(float x, float y)
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{
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RefPtr<DOMSVGPathSegLinetoRel> pathSeg = new DOMSVGPathSegLinetoRel(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoCubicAbs>
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SVGPathElement::CreateSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2)
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{
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// Note that we swap from DOM API argument order to the argument order used
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// in the <path> element's 'd' attribute (i.e. we put the arguments for the
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// end point of the segment last instead of first).
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RefPtr<DOMSVGPathSegCurvetoCubicAbs> pathSeg =
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new DOMSVGPathSegCurvetoCubicAbs(x1, y1, x2, y2, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoCubicRel>
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SVGPathElement::CreateSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegCurvetoCubicRel> pathSeg =
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new DOMSVGPathSegCurvetoCubicRel(x1, y1, x2, y2, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoQuadraticAbs>
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SVGPathElement::CreateSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegCurvetoQuadraticAbs> pathSeg =
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new DOMSVGPathSegCurvetoQuadraticAbs(x1, y1, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoQuadraticRel>
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SVGPathElement::CreateSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegCurvetoQuadraticRel> pathSeg =
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new DOMSVGPathSegCurvetoQuadraticRel(x1, y1, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegArcAbs>
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SVGPathElement::CreateSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegArcAbs> pathSeg =
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new DOMSVGPathSegArcAbs(r1, r2, angle, largeArcFlag, sweepFlag, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegArcRel>
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SVGPathElement::CreateSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegArcRel> pathSeg =
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new DOMSVGPathSegArcRel(r1, r2, angle, largeArcFlag, sweepFlag, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoHorizontalAbs>
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SVGPathElement::CreateSVGPathSegLinetoHorizontalAbs(float x)
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{
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RefPtr<DOMSVGPathSegLinetoHorizontalAbs> pathSeg =
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new DOMSVGPathSegLinetoHorizontalAbs(x);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoHorizontalRel>
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SVGPathElement::CreateSVGPathSegLinetoHorizontalRel(float x)
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{
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RefPtr<DOMSVGPathSegLinetoHorizontalRel> pathSeg =
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new DOMSVGPathSegLinetoHorizontalRel(x);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoVerticalAbs>
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SVGPathElement::CreateSVGPathSegLinetoVerticalAbs(float y)
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{
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RefPtr<DOMSVGPathSegLinetoVerticalAbs> pathSeg =
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new DOMSVGPathSegLinetoVerticalAbs(y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegLinetoVerticalRel>
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SVGPathElement::CreateSVGPathSegLinetoVerticalRel(float y)
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{
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RefPtr<DOMSVGPathSegLinetoVerticalRel> pathSeg =
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new DOMSVGPathSegLinetoVerticalRel(y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoCubicSmoothAbs>
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SVGPathElement::CreateSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegCurvetoCubicSmoothAbs> pathSeg =
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new DOMSVGPathSegCurvetoCubicSmoothAbs(x2, y2, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoCubicSmoothRel>
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SVGPathElement::CreateSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2)
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{
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// See comment in CreateSVGPathSegCurvetoCubicAbs
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RefPtr<DOMSVGPathSegCurvetoCubicSmoothRel> pathSeg =
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new DOMSVGPathSegCurvetoCubicSmoothRel(x2, y2, x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoQuadraticSmoothAbs>
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SVGPathElement::CreateSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y)
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{
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RefPtr<DOMSVGPathSegCurvetoQuadraticSmoothAbs> pathSeg =
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new DOMSVGPathSegCurvetoQuadraticSmoothAbs(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegCurvetoQuadraticSmoothRel>
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SVGPathElement::CreateSVGPathSegCurvetoQuadraticSmoothRel(float x, float y)
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{
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RefPtr<DOMSVGPathSegCurvetoQuadraticSmoothRel> pathSeg =
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new DOMSVGPathSegCurvetoQuadraticSmoothRel(x, y);
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return pathSeg.forget();
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}
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already_AddRefed<DOMSVGPathSegList>
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SVGPathElement::PathSegList()
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{
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return DOMSVGPathSegList::GetDOMWrapper(mD.GetBaseValKey(), this, false);
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}
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already_AddRefed<DOMSVGPathSegList>
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SVGPathElement::AnimatedPathSegList()
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{
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return DOMSVGPathSegList::GetDOMWrapper(mD.GetAnimValKey(), this, true);
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}
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//----------------------------------------------------------------------
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// nsSVGElement methods
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/* virtual */ bool
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SVGPathElement::HasValidDimensions() const
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{
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return !mD.GetAnimValue().IsEmpty();
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}
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//----------------------------------------------------------------------
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// nsIContent methods
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NS_IMETHODIMP_(bool)
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SVGPathElement::IsAttributeMapped(const nsIAtom* name) const
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{
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static const MappedAttributeEntry* const map[] = {
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sMarkersMap
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};
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return FindAttributeDependence(name, map) ||
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SVGPathElementBase::IsAttributeMapped(name);
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}
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already_AddRefed<Path>
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SVGPathElement::GetOrBuildPathForMeasuring()
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{
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return mD.GetAnimValue().BuildPathForMeasuring();
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}
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//----------------------------------------------------------------------
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// SVGGeometryElement methods
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bool
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SVGPathElement::AttributeDefinesGeometry(const nsIAtom *aName)
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{
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return aName == nsGkAtoms::d ||
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aName == nsGkAtoms::pathLength;
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}
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bool
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SVGPathElement::IsMarkable()
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{
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return true;
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}
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void
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SVGPathElement::GetMarkPoints(nsTArray<nsSVGMark> *aMarks)
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{
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mD.GetAnimValue().GetMarkerPositioningData(aMarks);
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}
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float
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SVGPathElement::GetPathLengthScale(PathLengthScaleForType aFor)
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{
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MOZ_ASSERT(aFor == eForTextPath || aFor == eForStroking,
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"Unknown enum");
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if (mPathLength.IsExplicitlySet()) {
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float authorsPathLengthEstimate = mPathLength.GetAnimValue();
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if (authorsPathLengthEstimate > 0) {
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RefPtr<Path> path = GetOrBuildPathForMeasuring();
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if (!path) {
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// The path is empty or invalid so its length must be zero and
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// we know that 0 / authorsPathLengthEstimate = 0.
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return 0.0;
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}
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if (aFor == eForTextPath) {
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// For textPath, a transform on the referenced path affects the
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// textPath layout, so when calculating the actual path length
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// we need to take that into account.
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gfxMatrix matrix = PrependLocalTransformsTo(gfxMatrix());
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if (!matrix.IsIdentity()) {
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RefPtr<PathBuilder> builder =
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path->TransformedCopyToBuilder(ToMatrix(matrix));
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path = builder->Finish();
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}
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}
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return path->ComputeLength() / authorsPathLengthEstimate;
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}
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}
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return 1.0;
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}
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already_AddRefed<Path>
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SVGPathElement::BuildPath(PathBuilder* aBuilder)
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{
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// The Moz2D PathBuilder that our SVGPathData will be using only cares about
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// the fill rule. However, in order to fulfill the requirements of the SVG
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// spec regarding zero length sub-paths when square line caps are in use,
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// SVGPathData needs to know our stroke-linecap style and, if "square", then
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// also our stroke width. See the comment for
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// ApproximateZeroLengthSubpathSquareCaps for more info.
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uint8_t strokeLineCap = NS_STYLE_STROKE_LINECAP_BUTT;
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Float strokeWidth = 0;
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RefPtr<nsStyleContext> styleContext =
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nsComputedDOMStyle::GetStyleContextNoFlush(this, nullptr, nullptr);
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if (styleContext) {
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const nsStyleSVG* style = styleContext->StyleSVG();
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// Note: the path that we return may be used for hit-testing, and SVG
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// exposes hit-testing of strokes that are not actually painted. For that
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// reason we do not check for eStyleSVGPaintType_None or check the stroke
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// opacity here.
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if (style->mStrokeLinecap != NS_STYLE_STROKE_LINECAP_BUTT) {
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strokeLineCap = style->mStrokeLinecap;
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strokeWidth = SVGContentUtils::GetStrokeWidth(this, styleContext, nullptr);
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}
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}
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return mD.GetAnimValue().BuildPath(aBuilder, strokeLineCap, strokeWidth);
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}
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} // namespace dom
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} // namespace mozilla
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