55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkCanvas.h"
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#include "modules/svg/include/SkSVGCircle.h"
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#include "modules/svg/include/SkSVGRenderContext.h"
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#include "modules/svg/include/SkSVGValue.h"
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SkSVGCircle::SkSVGCircle() : INHERITED(SkSVGTag::kCircle) {}
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bool SkSVGCircle::parseAndSetAttribute(const char* n, const char* v) {
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return INHERITED::parseAndSetAttribute(n, v) ||
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this->setCx(SkSVGAttributeParser::parse<SkSVGLength>("cx", n, v)) ||
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this->setCy(SkSVGAttributeParser::parse<SkSVGLength>("cy", n, v)) ||
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this->setR(SkSVGAttributeParser::parse<SkSVGLength>("r", n, v));
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}
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std::tuple<SkPoint, SkScalar> SkSVGCircle::resolve(const SkSVGLengthContext& lctx) const {
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const auto cx = lctx.resolve(fCx, SkSVGLengthContext::LengthType::kHorizontal);
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const auto cy = lctx.resolve(fCy, SkSVGLengthContext::LengthType::kVertical);
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const auto r = lctx.resolve(fR , SkSVGLengthContext::LengthType::kOther);
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return std::make_tuple(SkPoint::Make(cx, cy), r);
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}
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void SkSVGCircle::onDraw(SkCanvas* canvas, const SkSVGLengthContext& lctx,
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const SkPaint& paint, SkPathFillType) const {
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SkPoint pos;
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SkScalar r;
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std::tie(pos, r) = this->resolve(lctx);
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if (r > 0) {
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canvas->drawCircle(pos.x(), pos.y(), r, paint);
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}
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}
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SkPath SkSVGCircle::onAsPath(const SkSVGRenderContext& ctx) const {
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SkPoint pos;
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SkScalar r;
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std::tie(pos, r) = this->resolve(ctx.lengthContext());
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SkPath path = SkPath::Circle(pos.x(), pos.y(), r);
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this->mapToParent(&path);
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return path;
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}
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SkRect SkSVGCircle::onObjectBoundingBox(const SkSVGRenderContext& ctx) const {
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const auto [pos, r] = this->resolve(ctx.lengthContext());
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return SkRect::MakeXYWH(pos.fX - r, pos.fY - r, 2 * r, 2 * r);
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}
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