/* -*- 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