1 /*
2 * Copyright 2011 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 "gm/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkFont.h"
12 #include "include/core/SkPaint.h"
13 #include "include/core/SkPath.h"
14 #include "include/core/SkRect.h"
15 #include "include/core/SkScalar.h"
16 #include "include/core/SkTypeface.h"
17 #include "include/core/SkTypes.h"
18 #include "include/utils/SkRandom.h"
19 #include "tools/ToolUtils.h"
20
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPathFillType fill,SkScalar strokeWidth)21 static void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
22 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
23 SkPaint::Style style, SkPathFillType fill,
24 SkScalar strokeWidth) {
25 path.setFillType(fill);
26 SkPaint paint;
27 paint.setStrokeCap(cap);
28 paint.setStrokeWidth(strokeWidth);
29 paint.setStrokeJoin(join);
30 paint.setColor(color);
31 paint.setStyle(style);
32 canvas->save();
33 canvas->clipRect(clip);
34 canvas->drawPath(path, paint);
35 canvas->restore();
36 }
37
draw(SkCanvas * canvas,bool doClose)38 static void draw(SkCanvas* canvas, bool doClose) {
39 struct FillAndName {
40 SkPathFillType fFill;
41 const char* fName;
42 };
43 constexpr FillAndName gFills[] = {
44 {SkPathFillType::kWinding, "Winding"},
45 {SkPathFillType::kEvenOdd, "Even / Odd"},
46 {SkPathFillType::kInverseWinding, "Inverse Winding"},
47 {SkPathFillType::kInverseEvenOdd, "Inverse Even / Odd"},
48 };
49 struct StyleAndName {
50 SkPaint::Style fStyle;
51 const char* fName;
52 };
53 constexpr StyleAndName gStyles[] = {
54 {SkPaint::kFill_Style, "Fill"},
55 {SkPaint::kStroke_Style, "Stroke"},
56 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
57 };
58 struct CapAndName {
59 SkPaint::Cap fCap;
60 SkPaint::Join fJoin;
61 const char* fName;
62 };
63 constexpr CapAndName gCaps[] = {
64 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
65 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
66 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
67 };
68 struct PathAndName {
69 SkPath fPath;
70 const char* fName;
71 };
72 PathAndName path;
73 path.fPath.moveTo(25*SK_Scalar1, 15*SK_Scalar1);
74 path.fPath.lineTo(75*SK_Scalar1, 15*SK_Scalar1);
75 if (doClose) {
76 path.fPath.close();
77 path.fName = "moveTo-line-close";
78 } else {
79 path.fName = "moveTo-line";
80 }
81
82 SkPaint titlePaint;
83 titlePaint.setColor(SK_ColorBLACK);
84 titlePaint.setAntiAlias(true);
85
86 SkFont font(ToolUtils::create_portable_typeface(), 15.0f);
87
88 const char titleNoClose[] = "Line Drawn Into Rectangle Clips With "
89 "Indicated Style, Fill and Linecaps, with stroke width 10";
90 const char titleClose[] = "Line Closed Drawn Into Rectangle Clips With "
91 "Indicated Style, Fill and Linecaps, with stroke width 10";
92 const char* title = doClose ? titleClose : titleNoClose;
93 canvas->drawString(title, 20.0f, 20.0f, font, titlePaint);
94
95 SkRandom rand;
96 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
97 canvas->save();
98 canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
99 canvas->save();
100 for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
101 if (0 < cap) {
102 canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
103 }
104 canvas->save();
105 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
106 if (0 < fill) {
107 canvas->translate(0, rect.height() + 40 * SK_Scalar1);
108 }
109 canvas->save();
110 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
111 if (0 < style) {
112 canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
113 }
114
115 SkColor color = ToolUtils::color_to_565(0xff007000);
116 drawPath(path.fPath, canvas, color, rect,
117 gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
118 gFills[fill].fFill, SK_Scalar1*10);
119
120 SkPaint rectPaint;
121 rectPaint.setColor(SK_ColorBLACK);
122 rectPaint.setStyle(SkPaint::kStroke_Style);
123 rectPaint.setStrokeWidth(-1);
124 rectPaint.setAntiAlias(true);
125 canvas->drawRect(rect, rectPaint);
126
127 SkPaint labelPaint;
128 labelPaint.setColor(color);
129 font.setSize(10);
130 canvas->drawString(gStyles[style].fName, 0, rect.height() + 12.0f,
131 font, labelPaint);
132 canvas->drawString(gFills[fill].fName, 0, rect.height() + 24.0f,
133 font, labelPaint);
134 canvas->drawString(gCaps[cap].fName, 0, rect.height() + 36.0f,
135 font, labelPaint);
136 }
137 canvas->restore();
138 }
139 canvas->restore();
140 }
141 canvas->restore();
142 canvas->restore();
143 }
144 DEF_SIMPLE_GM(linepath, canvas, 1240, 390) {
145 draw(canvas, false);
146 }
147 DEF_SIMPLE_GM(lineclosepath, canvas, 1240, 390) {
148 draw(canvas, true);
149 }
150