1 files changed, 132 insertions, 0 deletions
diff --git a/dom/svg/nsSVGPathGeometryElement.cpp b/dom/svg/nsSVGPathGeometryElement.cpp
new file mode 100644
index 000000000..ea2e1c7c4
--- /dev/null
+++ b/dom/svg/nsSVGPathGeometryElement.cpp
@@ -0,0 +1,132 @@
+/* -*- 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/. */
+
+#include "nsSVGPathGeometryElement.h"
+
+#include "gfxPlatform.h"
+#include "mozilla/gfx/2D.h"
+#include "nsComputedDOMStyle.h"
+#include "nsSVGUtils.h"
+#include "nsSVGLength2.h"
+#include "SVGContentUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+//----------------------------------------------------------------------
+// Implementation
+
+nsSVGPathGeometryElement::nsSVGPathGeometryElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : nsSVGPathGeometryElementBase(aNodeInfo)
+{
+}
+
+nsresult
+nsSVGPathGeometryElement::AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
+                                       const nsAttrValue* aValue, bool aNotify)
+{
+  if (mCachedPath &&
+      aNamespaceID == kNameSpaceID_None &&
+      AttributeDefinesGeometry(aName)) {
+    mCachedPath = nullptr;
+  }
+  return nsSVGPathGeometryElementBase::AfterSetAttr(aNamespaceID, aName,
+                                                    aValue, aNotify);
+}
+
+bool
+nsSVGPathGeometryElement::AttributeDefinesGeometry(const nsIAtom *aName)
+{
+  // Check for nsSVGLength2 attribute
+  LengthAttributesInfo info = GetLengthInfo();
+  for (uint32_t i = 0; i < info.mLengthCount; i++) {
+    if (aName == *info.mLengthInfo[i].mName) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool
+nsSVGPathGeometryElement::GeometryDependsOnCoordCtx()
+{
+  // Check the nsSVGLength2 attribute
+  LengthAttributesInfo info = const_cast<nsSVGPathGeometryElement*>(this)->GetLengthInfo();
+  for (uint32_t i = 0; i < info.mLengthCount; i++) {
+    if (info.mLengths[i].GetSpecifiedUnitType() == nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE) {
+      return true;
+    }   
+  }
+  return false;
+}
+
+bool
+nsSVGPathGeometryElement::IsMarkable()
+{
+  return false;
+}
+
+void
+nsSVGPathGeometryElement::GetMarkPoints(nsTArray<nsSVGMark> *aMarks)
+{
+}
+
+already_AddRefed<Path>
+nsSVGPathGeometryElement::GetOrBuildPath(const DrawTarget& aDrawTarget,
+                                         FillRule aFillRule)
+{
+  // We only cache the path if it matches the backend used for screen painting:
+  bool cacheable  = aDrawTarget.GetBackendType() ==
+                    gfxPlatform::GetPlatform()->GetDefaultContentBackend();
+
+  // Checking for and returning mCachedPath before checking the pref means
+  // that the pref is only live on page reload (or app restart for SVG in
+  // chrome). The benefit is that we avoid causing a CPU memory cache miss by
+  // looking at the global variable that the pref's stored in.
+  if (cacheable && mCachedPath) {
+    if (aDrawTarget.GetBackendType() == mCachedPath->GetBackendType()) {
+      RefPtr<Path> path(mCachedPath);
+      return path.forget();
+    }
+  }
+  RefPtr<PathBuilder> builder = aDrawTarget.CreatePathBuilder(aFillRule);
+  RefPtr<Path> path = BuildPath(builder);
+  if (cacheable && NS_SVGPathCachingEnabled()) {
+    mCachedPath = path;
+  }
+  return path.forget();
+}
+
+already_AddRefed<Path>
+nsSVGPathGeometryElement::GetOrBuildPathForMeasuring()
+{
+  return nullptr;
+}
+
+FillRule
+nsSVGPathGeometryElement::GetFillRule()
+{
+  FillRule fillRule = FillRule::FILL_WINDING; // Equivalent to StyleFillRule::Nonzero
+
+  RefPtr<nsStyleContext> styleContext =
+    nsComputedDOMStyle::GetStyleContextForElementNoFlush(this, nullptr,
+                                                         nullptr);
+  
+  if (styleContext) {
+    MOZ_ASSERT(styleContext->StyleSVG()->mFillRule == StyleFillRule::Nonzero ||
+               styleContext->StyleSVG()->mFillRule == StyleFillRule::Evenodd);
+
+    if (styleContext->StyleSVG()->mFillRule == StyleFillRule::Evenodd) {
+      fillRule = FillRule::FILL_EVEN_ODD;
+    }
+  } else {
+    // ReportToConsole
+    NS_WARNING("Couldn't get style context for content in GetFillRule");
+  }
+
+  return fillRule;
+}