133 lines
4.0 KiB
C++
133 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; 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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#include "nsSVGPathGeometryElement.h"
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#include "gfxPlatform.h"
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#include "mozilla/gfx/2D.h"
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#include "nsComputedDOMStyle.h"
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#include "nsSVGUtils.h"
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#include "nsSVGLength2.h"
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#include "SVGContentUtils.h"
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using namespace mozilla;
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using namespace mozilla::gfx;
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//----------------------------------------------------------------------
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// Implementation
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nsSVGPathGeometryElement::nsSVGPathGeometryElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsSVGPathGeometryElementBase(aNodeInfo)
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{
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}
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nsresult
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nsSVGPathGeometryElement::AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue, bool aNotify)
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{
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if (mCachedPath &&
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aNamespaceID == kNameSpaceID_None &&
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AttributeDefinesGeometry(aName)) {
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mCachedPath = nullptr;
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}
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return nsSVGPathGeometryElementBase::AfterSetAttr(aNamespaceID, aName,
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aValue, aOldValue, aNotify);
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}
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bool
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nsSVGPathGeometryElement::AttributeDefinesGeometry(const nsIAtom *aName)
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{
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// Check for nsSVGLength2 attribute
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LengthAttributesInfo info = GetLengthInfo();
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for (uint32_t i = 0; i < info.mLengthCount; i++) {
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if (aName == *info.mLengthInfo[i].mName) {
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return true;
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}
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}
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return false;
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}
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bool
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nsSVGPathGeometryElement::GeometryDependsOnCoordCtx()
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{
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// Check the nsSVGLength2 attribute
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LengthAttributesInfo info = const_cast<nsSVGPathGeometryElement*>(this)->GetLengthInfo();
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for (uint32_t i = 0; i < info.mLengthCount; i++) {
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if (info.mLengths[i].GetSpecifiedUnitType() == nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE) {
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return true;
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}
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}
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return false;
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}
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bool
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nsSVGPathGeometryElement::IsMarkable()
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{
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return false;
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}
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void
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nsSVGPathGeometryElement::GetMarkPoints(nsTArray<nsSVGMark> *aMarks)
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{
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}
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already_AddRefed<Path>
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nsSVGPathGeometryElement::GetOrBuildPath(const DrawTarget& aDrawTarget,
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FillRule aFillRule)
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{
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// We only cache the path if it matches the backend used for screen painting:
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bool cacheable = aDrawTarget.GetBackendType() ==
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gfxPlatform::GetPlatform()->GetDefaultContentBackend();
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// Checking for and returning mCachedPath before checking the pref means
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// that the pref is only live on page reload (or app restart for SVG in
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// chrome). The benefit is that we avoid causing a CPU memory cache miss by
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// looking at the global variable that the pref's stored in.
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if (cacheable && mCachedPath) {
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if (aDrawTarget.GetBackendType() == mCachedPath->GetBackendType()) {
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RefPtr<Path> path(mCachedPath);
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return path.forget();
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}
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}
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RefPtr<PathBuilder> builder = aDrawTarget.CreatePathBuilder(aFillRule);
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RefPtr<Path> path = BuildPath(builder);
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if (cacheable && NS_SVGPathCachingEnabled()) {
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mCachedPath = path;
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}
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return path.forget();
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}
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already_AddRefed<Path>
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nsSVGPathGeometryElement::GetOrBuildPathForMeasuring()
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{
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return nullptr;
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}
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FillRule
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nsSVGPathGeometryElement::GetFillRule()
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{
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FillRule fillRule = FillRule::FILL_WINDING; // Equivalent to StyleFillRule::Nonzero
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RefPtr<nsStyleContext> styleContext =
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nsComputedDOMStyle::GetStyleContextForElementNoFlush(this, nullptr,
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nullptr);
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if (styleContext) {
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MOZ_ASSERT(styleContext->StyleSVG()->mFillRule == StyleFillRule::Nonzero ||
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styleContext->StyleSVG()->mFillRule == StyleFillRule::Evenodd);
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if (styleContext->StyleSVG()->mFillRule == StyleFillRule::Evenodd) {
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fillRule = FillRule::FILL_EVEN_ODD;
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}
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} else {
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// ReportToConsole
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NS_WARNING("Couldn't get style context for content in GetFillRule");
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}
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return fillRule;
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}
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