1 files changed, 141 insertions, 0 deletions
diff --git a/dom/svg/SVGCircleElement.cpp b/dom/svg/SVGCircleElement.cpp
new file mode 100644
index 000000000..fa04824f1
--- /dev/null
+++ b/dom/svg/SVGCircleElement.cpp
@@ -0,0 +1,141 @@
+/* -*- 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 "mozilla/dom/SVGCircleElement.h"
+#include "mozilla/gfx/2D.h"
+#include "nsGkAtoms.h"
+#include "mozilla/dom/SVGCircleElementBinding.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Circle)
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGCircleElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return SVGCircleElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+nsSVGElement::LengthInfo SVGCircleElement::sLengthInfo[3] =
+{
+  { &nsGkAtoms::cx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
+  { &nsGkAtoms::cy, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
+  { &nsGkAtoms::r, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::XY }
+};
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGCircleElement::SVGCircleElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : SVGCircleElementBase(aNodeInfo)
+{
+}
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGCircleElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<SVGAnimatedLength>
+SVGCircleElement::Cx()
+{
+  return mLengthAttributes[ATTR_CX].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGCircleElement::Cy()
+{
+  return mLengthAttributes[ATTR_CY].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGCircleElement::R()
+{
+  return mLengthAttributes[ATTR_R].ToDOMAnimatedLength(this);
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+/* virtual */ bool
+SVGCircleElement::HasValidDimensions() const
+{
+  return mLengthAttributes[ATTR_R].IsExplicitlySet() &&
+         mLengthAttributes[ATTR_R].GetAnimValInSpecifiedUnits() > 0;
+}
+
+nsSVGElement::LengthAttributesInfo
+SVGCircleElement::GetLengthInfo()
+{
+  return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+                              ArrayLength(sLengthInfo));
+}
+
+//----------------------------------------------------------------------
+// nsSVGPathGeometryElement methods
+
+bool
+SVGCircleElement::GetGeometryBounds(Rect* aBounds,
+                                    const StrokeOptions& aStrokeOptions,
+                                    const Matrix& aToBoundsSpace,
+                                    const Matrix* aToNonScalingStrokeSpace)
+{
+  float x, y, r;
+  GetAnimatedLengthValues(&x, &y, &r, nullptr);
+
+  if (r <= 0.f) {
+    // Rendering of the element is disabled
+    *aBounds = Rect(aToBoundsSpace.TransformPoint(Point(x, y)), Size());
+    return true;
+  }
+
+  if (aToBoundsSpace.IsRectilinear()) {
+    // Optimize the case where we can treat the circle as a rectangle and
+    // still get tight bounds.
+    if (aStrokeOptions.mLineWidth > 0.f) {
+      if (aToNonScalingStrokeSpace) {
+        if (aToNonScalingStrokeSpace->IsRectilinear()) {
+          MOZ_ASSERT(!aToNonScalingStrokeSpace->IsSingular());
+          Rect userBounds(x - r, y - r, 2 * r, 2 * r);
+          SVGContentUtils::RectilinearGetStrokeBounds(
+            userBounds, aToBoundsSpace, *aToNonScalingStrokeSpace,
+            aStrokeOptions.mLineWidth, aBounds);
+          return true;
+        }
+        return false;
+      }
+      r += aStrokeOptions.mLineWidth / 2.f;
+    }
+    Rect rect(x - r, y - r, 2 * r, 2 * r);
+    *aBounds = aToBoundsSpace.TransformBounds(rect);
+    return true;
+  }
+
+  return false;
+}
+
+already_AddRefed<Path>
+SVGCircleElement::BuildPath(PathBuilder* aBuilder)
+{
+  float x, y, r;
+  GetAnimatedLengthValues(&x, &y, &r, nullptr);
+
+  if (r <= 0.0f) {
+    return nullptr;
+  }
+
+  aBuilder->Arc(Point(x, y), r, 0, Float(2*M_PI));
+
+  return aBuilder->Finish();
+}
+
+} // namespace dom
+} // namespace mozilla