/* -*- 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/SVGPolygonElement.h" #include "mozilla/dom/SVGPolygonElementBinding.h" #include "mozilla/gfx/2D.h" #include "SVGContentUtils.h" using namespace mozilla; using namespace mozilla::gfx; NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Polygon) namespace mozilla { namespace dom { JSObject* SVGPolygonElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) { return SVGPolygonElementBinding::Wrap(aCx, this, aGivenProto); } //---------------------------------------------------------------------- // Implementation SVGPolygonElement::SVGPolygonElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo) : SVGPolygonElementBase(aNodeInfo) { } //---------------------------------------------------------------------- // nsIDOMNode methods NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGPolygonElement) //---------------------------------------------------------------------- // nsSVGPathGeometryElement methods void SVGPolygonElement::GetMarkPoints(nsTArray<nsSVGMark> *aMarks) { nsSVGPolyElement::GetMarkPoints(aMarks); if (aMarks->IsEmpty() || aMarks->LastElement().type != nsSVGMark::eEnd) { return; } nsSVGMark *endMark = &aMarks->LastElement(); nsSVGMark *startMark = &aMarks->ElementAt(0); float angle = atan2(startMark->y - endMark->y, startMark->x - endMark->x); endMark->type = nsSVGMark::eMid; endMark->angle = SVGContentUtils::AngleBisect(angle, endMark->angle); startMark->angle = SVGContentUtils::AngleBisect(angle, startMark->angle); // for a polygon (as opposed to a polyline) there's an implicit extra point // co-located with the start point that nsSVGPolyElement::GetMarkPoints // doesn't return aMarks->AppendElement(nsSVGMark(startMark->x, startMark->y, startMark->angle, nsSVGMark::eEnd)); } already_AddRefed<Path> SVGPolygonElement::BuildPath(PathBuilder* aBuilder) { const SVGPointList &points = mPoints.GetAnimValue(); if (points.IsEmpty()) { return nullptr; } aBuilder->MoveTo(points[0]); for (uint32_t i = 1; i < points.Length(); ++i) { aBuilder->LineTo(points[i]); } aBuilder->Close(); return aBuilder->Finish(); } } // namespace dom } // namespace mozilla