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-rw-r--r--dom/svg/SVGCircleElement.cpp174
1 files changed, 174 insertions, 0 deletions
diff --git a/dom/svg/SVGCircleElement.cpp b/dom/svg/SVGCircleElement.cpp
new file mode 100644
index 0000000000..c3f4beb40d
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+++ b/dom/svg/SVGCircleElement.cpp
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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/. */
+
+#include "ComputedStyle.h"
+#include "mozilla/dom/SVGCircleElement.h"
+#include "mozilla/gfx/2D.h"
+#include "nsGkAtoms.h"
+#include "mozilla/dom/SVGCircleElementBinding.h"
+#include "mozilla/dom/SVGLengthBinding.h"
+#include "SVGGeometryProperty.h"
+
+NS_IMPL_NS_NEW_SVG_ELEMENT(Circle)
+
+using namespace mozilla::gfx;
+
+namespace mozilla::dom {
+
+JSObject* SVGCircleElement::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return SVGCircleElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+SVGElement::LengthInfo SVGCircleElement::sLengthInfo[3] = {
+ {nsGkAtoms::cx, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::X},
+ {nsGkAtoms::cy, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::Y},
+ {nsGkAtoms::r, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::XY}};
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGCircleElement::SVGCircleElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : SVGCircleElementBase(std::move(aNodeInfo)) {}
+
+bool SVGCircleElement::IsAttributeMapped(const nsAtom* aAttribute) const {
+ return IsInLengthInfo(aAttribute, sLengthInfo) ||
+ SVGCircleElementBase::IsAttributeMapped(aAttribute);
+}
+
+namespace SVGT = SVGGeometryProperty::Tags;
+
+//----------------------------------------------------------------------
+// nsINode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGCircleElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::Cx() {
+ return mLengthAttributes[ATTR_CX].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::Cy() {
+ return mLengthAttributes[ATTR_CY].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::R() {
+ return mLengthAttributes[ATTR_R].ToDOMAnimatedLength(this);
+}
+
+//----------------------------------------------------------------------
+// SVGElement methods
+
+/* virtual */
+bool SVGCircleElement::HasValidDimensions() const {
+ float r;
+
+ if (SVGGeometryProperty::ResolveAll<SVGT::R>(this, &r)) {
+ return r > 0;
+ }
+ // This function might be called for an element in display:none subtree
+ // (e.g. SMIL animateMotion), we fall back to use SVG attributes.
+ return mLengthAttributes[ATTR_R].IsExplicitlySet() &&
+ mLengthAttributes[ATTR_R].GetAnimValInSpecifiedUnits() > 0;
+}
+
+SVGElement::LengthAttributesInfo SVGCircleElement::GetLengthInfo() {
+ return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+ ArrayLength(sLengthInfo));
+}
+
+//----------------------------------------------------------------------
+// SVGGeometryElement methods
+
+bool SVGCircleElement::GetGeometryBounds(
+ Rect* aBounds, const StrokeOptions& aStrokeOptions,
+ const Matrix& aToBoundsSpace, const Matrix* aToNonScalingStrokeSpace) {
+ float x, y, r;
+
+ DebugOnly<bool> ok =
+ SVGGeometryProperty::ResolveAll<SVGT::Cx, SVGT::Cy, SVGT::R>(this, &x, &y,
+ &r);
+ MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
+
+ 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;
+ if (!SVGGeometryProperty::ResolveAll<SVGT::Cx, SVGT::Cy, SVGT::R>(this, &x,
+ &y, &r)) {
+ // This function might be called for element in display:none subtree
+ // (e.g. getTotalLength), we fall back to use SVG attributes.
+ 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();
+}
+
+bool SVGCircleElement::IsLengthChangedViaCSS(const ComputedStyle& aNewStyle,
+ const ComputedStyle& aOldStyle) {
+ const auto& newSVGReset = *aNewStyle.StyleSVGReset();
+ const auto& oldSVGReset = *aOldStyle.StyleSVGReset();
+
+ return newSVGReset.mCx != oldSVGReset.mCx ||
+ newSVGReset.mCy != oldSVGReset.mCy || newSVGReset.mR != oldSVGReset.mR;
+}
+
+nsCSSPropertyID SVGCircleElement::GetCSSPropertyIdForAttrEnum(
+ uint8_t aAttrEnum) {
+ switch (aAttrEnum) {
+ case ATTR_CX:
+ return eCSSProperty_cx;
+ case ATTR_CY:
+ return eCSSProperty_cy;
+ case ATTR_R:
+ return eCSSProperty_r;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
+ return eCSSProperty_UNKNOWN;
+ }
+}
+
+} // namespace mozilla::dom