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 "SkCanvas.h"
9 #include "SkSVGLine.h"
10 #include "SkSVGRenderContext.h"
11 #include "SkSVGValue.h"
12
SkSVGLine()13 SkSVGLine::SkSVGLine() : INHERITED(SkSVGTag::kLine) {}
14
setX1(const SkSVGLength & x1)15 void SkSVGLine::setX1(const SkSVGLength& x1) {
16 fX1 = x1;
17 }
18
setY1(const SkSVGLength & y1)19 void SkSVGLine::setY1(const SkSVGLength& y1) {
20 fY1 = y1;
21 }
22
setX2(const SkSVGLength & x2)23 void SkSVGLine::setX2(const SkSVGLength& x2) {
24 fX2 = x2;
25 }
26
setY2(const SkSVGLength & y2)27 void SkSVGLine::setY2(const SkSVGLength& y2) {
28 fY2 = y2;
29 }
30
onSetAttribute(SkSVGAttribute attr,const SkSVGValue & v)31 void SkSVGLine::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) {
32 switch (attr) {
33 case SkSVGAttribute::kX1:
34 if (const auto* x1 = v.as<SkSVGLengthValue>()) {
35 this->setX1(*x1);
36 }
37 break;
38 case SkSVGAttribute::kY1:
39 if (const auto* y1 = v.as<SkSVGLengthValue>()) {
40 this->setY1(*y1);
41 }
42 break;
43 case SkSVGAttribute::kX2:
44 if (const auto* x2 = v.as<SkSVGLengthValue>()) {
45 this->setX2(*x2);
46 }
47 break;
48 case SkSVGAttribute::kY2:
49 if (const auto* y2 = v.as<SkSVGLengthValue>()) {
50 this->setY2(*y2);
51 }
52 break;
53 default:
54 this->INHERITED::onSetAttribute(attr, v);
55 }
56 }
57
resolve(const SkSVGLengthContext & lctx) const58 std::tuple<SkPoint, SkPoint> SkSVGLine::resolve(const SkSVGLengthContext& lctx) const {
59 return std::make_tuple(
60 SkPoint::Make(lctx.resolve(fX1, SkSVGLengthContext::LengthType::kHorizontal),
61 lctx.resolve(fY1, SkSVGLengthContext::LengthType::kVertical)),
62 SkPoint::Make(lctx.resolve(fX2, SkSVGLengthContext::LengthType::kHorizontal),
63 lctx.resolve(fY2, SkSVGLengthContext::LengthType::kVertical)));
64 }
65
onDraw(SkCanvas * canvas,const SkSVGLengthContext & lctx,const SkPaint & paint,SkPath::FillType) const66 void SkSVGLine::onDraw(SkCanvas* canvas, const SkSVGLengthContext& lctx,
67 const SkPaint& paint, SkPath::FillType) const {
68 SkPoint p0, p1;
69 std::tie(p0, p1) = this->resolve(lctx);
70
71 canvas->drawLine(p0, p1, paint);
72 }
73
onAsPath(const SkSVGRenderContext & ctx) const74 SkPath SkSVGLine::onAsPath(const SkSVGRenderContext& ctx) const {
75 SkPoint p0, p1;
76 std::tie(p0, p1) = this->resolve(ctx.lengthContext());
77
78 SkPath path;
79 path.moveTo(p0);
80 path.lineTo(p1);
81 this->mapToParent(&path);
82
83 return path;
84 }
85