1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "include/core/SkCanvas.h"
9#include "modules/svg/include/SkSVGEllipse.h"
10#include "modules/svg/include/SkSVGRenderContext.h"
11#include "modules/svg/include/SkSVGValue.h"
12
13SkSVGEllipse::SkSVGEllipse() : INHERITED(SkSVGTag::kEllipse) {}
14
15bool SkSVGEllipse::parseAndSetAttribute(const char* n, const char* v) {
16    return INHERITED::parseAndSetAttribute(n, v) ||
17           this->setCx(SkSVGAttributeParser::parse<SkSVGLength>("cx", n, v)) ||
18           this->setCy(SkSVGAttributeParser::parse<SkSVGLength>("cy", n, v)) ||
19           this->setRx(SkSVGAttributeParser::parse<SkSVGLength>("rx", n, v)) ||
20           this->setRy(SkSVGAttributeParser::parse<SkSVGLength>("ry", n, v));
21}
22
23SkRect SkSVGEllipse::resolve(const SkSVGLengthContext& lctx) const {
24    const auto cx = lctx.resolve(fCx, SkSVGLengthContext::LengthType::kHorizontal);
25    const auto cy = lctx.resolve(fCy, SkSVGLengthContext::LengthType::kVertical);
26    const auto rx = lctx.resolve(fRx, SkSVGLengthContext::LengthType::kHorizontal);
27    const auto ry = lctx.resolve(fRy, SkSVGLengthContext::LengthType::kVertical);
28
29    return (rx > 0 && ry > 0)
30        ? SkRect::MakeXYWH(cx - rx, cy - ry, rx * 2, ry * 2)
31        : SkRect::MakeEmpty();
32}
33
34void SkSVGEllipse::onDraw(SkCanvas* canvas, const SkSVGLengthContext& lctx,
35                          const SkPaint& paint, SkPathFillType) const {
36    canvas->drawOval(this->resolve(lctx), paint);
37}
38
39SkPath SkSVGEllipse::onAsPath(const SkSVGRenderContext& ctx) const {
40    SkPath path = SkPath::Oval(this->resolve(ctx.lengthContext()));
41    this->mapToParent(&path);
42
43    return path;
44}
45