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 #include "gm.h"
8 #include "SkCanvas.h"
9 #include "SkPaint.h"
10 #include "SkRandom.h"
11
12 namespace skiagm {
13
14 class CubicPathGM : public GM {
15 public:
CubicPathGM()16 CubicPathGM() {}
17
18 protected:
onShortName()19 SkString onShortName() {
20 return SkString("cubicpath");
21 }
22
onISize()23 SkISize onISize() { return make_isize(1240, 390); }
24
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPath::FillType fill,SkScalar strokeWidth)25 void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
26 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
27 SkPaint::Style style, SkPath::FillType fill,
28 SkScalar strokeWidth) {
29 path.setFillType(fill);
30 SkPaint paint;
31 paint.setStrokeCap(cap);
32 paint.setStrokeWidth(strokeWidth);
33 paint.setStrokeJoin(join);
34 paint.setColor(color);
35 paint.setStyle(style);
36 canvas->save();
37 canvas->clipRect(clip);
38 canvas->drawPath(path, paint);
39 canvas->restore();
40 }
41
onDraw(SkCanvas * canvas)42 virtual void onDraw(SkCanvas* canvas) {
43 struct FillAndName {
44 SkPath::FillType fFill;
45 const char* fName;
46 };
47 static const FillAndName gFills[] = {
48 {SkPath::kWinding_FillType, "Winding"},
49 {SkPath::kEvenOdd_FillType, "Even / Odd"},
50 {SkPath::kInverseWinding_FillType, "Inverse Winding"},
51 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
52 };
53 struct StyleAndName {
54 SkPaint::Style fStyle;
55 const char* fName;
56 };
57 static const StyleAndName gStyles[] = {
58 {SkPaint::kFill_Style, "Fill"},
59 {SkPaint::kStroke_Style, "Stroke"},
60 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
61 };
62 struct CapAndName {
63 SkPaint::Cap fCap;
64 SkPaint::Join fJoin;
65 const char* fName;
66 };
67 static const CapAndName gCaps[] = {
68 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
69 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
70 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
71 };
72 struct PathAndName {
73 SkPath fPath;
74 const char* fName;
75 };
76 PathAndName path;
77 path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
78 path.fPath.cubicTo(40*SK_Scalar1, 20*SK_Scalar1,
79 60*SK_Scalar1, 20*SK_Scalar1,
80 75*SK_Scalar1, 10*SK_Scalar1);
81 path.fName = "moveTo-cubic";
82
83 SkPaint titlePaint;
84 titlePaint.setColor(SK_ColorBLACK);
85 titlePaint.setAntiAlias(true);
86 titlePaint.setLCDRenderText(true);
87 titlePaint.setTextSize(15 * SK_Scalar1);
88 const char title[] = "Cubic Drawn Into Rectangle Clips With "
89 "Indicated Style, Fill and Linecaps, with stroke width 10";
90 canvas->drawText(title, strlen(title),
91 20 * SK_Scalar1,
92 20 * SK_Scalar1,
93 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 = 0xff007000;
116 this->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 labelPaint.setAntiAlias(true);
130 labelPaint.setLCDRenderText(true);
131 labelPaint.setTextSize(10 * SK_Scalar1);
132 canvas->drawText(gStyles[style].fName,
133 strlen(gStyles[style].fName),
134 0, rect.height() + 12 * SK_Scalar1,
135 labelPaint);
136 canvas->drawText(gFills[fill].fName,
137 strlen(gFills[fill].fName),
138 0, rect.height() + 24 * SK_Scalar1,
139 labelPaint);
140 canvas->drawText(gCaps[cap].fName,
141 strlen(gCaps[cap].fName),
142 0, rect.height() + 36 * SK_Scalar1,
143 labelPaint);
144 }
145 canvas->restore();
146 }
147 canvas->restore();
148 }
149 canvas->restore();
150 canvas->restore();
151 }
152
153 private:
154 typedef GM INHERITED;
155 };
156
157 class CubicClosePathGM : public GM {
158 public:
CubicClosePathGM()159 CubicClosePathGM() {}
160
161 protected:
onShortName()162 SkString onShortName() {
163 return SkString("cubicclosepath");
164 }
165
onISize()166 SkISize onISize() { return make_isize(1240, 390); }
167
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPath::FillType fill,SkScalar strokeWidth)168 void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
169 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
170 SkPaint::Style style, SkPath::FillType fill,
171 SkScalar strokeWidth) {
172 path.setFillType(fill);
173 SkPaint paint;
174 paint.setStrokeCap(cap);
175 paint.setStrokeWidth(strokeWidth);
176 paint.setStrokeJoin(join);
177 paint.setColor(color);
178 paint.setStyle(style);
179 canvas->save();
180 canvas->clipRect(clip);
181 canvas->drawPath(path, paint);
182 canvas->restore();
183 }
184
onDraw(SkCanvas * canvas)185 virtual void onDraw(SkCanvas* canvas) {
186 struct FillAndName {
187 SkPath::FillType fFill;
188 const char* fName;
189 };
190 static const FillAndName gFills[] = {
191 {SkPath::kWinding_FillType, "Winding"},
192 {SkPath::kEvenOdd_FillType, "Even / Odd"},
193 {SkPath::kInverseWinding_FillType, "Inverse Winding"},
194 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
195 };
196 struct StyleAndName {
197 SkPaint::Style fStyle;
198 const char* fName;
199 };
200 static const StyleAndName gStyles[] = {
201 {SkPaint::kFill_Style, "Fill"},
202 {SkPaint::kStroke_Style, "Stroke"},
203 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
204 };
205 struct CapAndName {
206 SkPaint::Cap fCap;
207 SkPaint::Join fJoin;
208 const char* fName;
209 };
210 static const CapAndName gCaps[] = {
211 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
212 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
213 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
214 };
215 struct PathAndName {
216 SkPath fPath;
217 const char* fName;
218 };
219 PathAndName path;
220 path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
221 path.fPath.cubicTo(40*SK_Scalar1, 20*SK_Scalar1,
222 60*SK_Scalar1, 20*SK_Scalar1,
223 75*SK_Scalar1, 10*SK_Scalar1);
224 path.fPath.close();
225 path.fName = "moveTo-cubic-close";
226
227 SkPaint titlePaint;
228 titlePaint.setColor(SK_ColorBLACK);
229 titlePaint.setAntiAlias(true);
230 titlePaint.setLCDRenderText(true);
231 titlePaint.setTextSize(15 * SK_Scalar1);
232 const char title[] = "Cubic Closed Drawn Into Rectangle Clips With "
233 "Indicated Style, Fill and Linecaps, with stroke width 10";
234 canvas->drawText(title, strlen(title),
235 20 * SK_Scalar1,
236 20 * SK_Scalar1,
237 titlePaint);
238
239 SkRandom rand;
240 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
241 canvas->save();
242 canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
243 canvas->save();
244 for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
245 if (0 < cap) {
246 canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
247 }
248 canvas->save();
249 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
250 if (0 < fill) {
251 canvas->translate(0, rect.height() + 40 * SK_Scalar1);
252 }
253 canvas->save();
254 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
255 if (0 < style) {
256 canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
257 }
258
259 SkColor color = 0xff007000;
260 this->drawPath(path.fPath, canvas, color, rect,
261 gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
262 gFills[fill].fFill, SK_Scalar1*10);
263
264 SkPaint rectPaint;
265 rectPaint.setColor(SK_ColorBLACK);
266 rectPaint.setStyle(SkPaint::kStroke_Style);
267 rectPaint.setStrokeWidth(-1);
268 rectPaint.setAntiAlias(true);
269 canvas->drawRect(rect, rectPaint);
270
271 SkPaint labelPaint;
272 labelPaint.setColor(color);
273 labelPaint.setAntiAlias(true);
274 labelPaint.setLCDRenderText(true);
275 labelPaint.setTextSize(10 * SK_Scalar1);
276 canvas->drawText(gStyles[style].fName,
277 strlen(gStyles[style].fName),
278 0, rect.height() + 12 * SK_Scalar1,
279 labelPaint);
280 canvas->drawText(gFills[fill].fName,
281 strlen(gFills[fill].fName),
282 0, rect.height() + 24 * SK_Scalar1,
283 labelPaint);
284 canvas->drawText(gCaps[cap].fName,
285 strlen(gCaps[cap].fName),
286 0, rect.height() + 36 * SK_Scalar1,
287 labelPaint);
288 }
289 canvas->restore();
290 }
291 canvas->restore();
292 }
293 canvas->restore();
294 canvas->restore();
295 }
296
297 private:
298 typedef GM INHERITED;
299 };
300
301 //////////////////////////////////////////////////////////////////////////////
302
CubicPathFactory(void *)303 static GM* CubicPathFactory(void*) { return new CubicPathGM; }
304 static GMRegistry regCubicPath(CubicPathFactory);
305
CubicClosePathFactory(void *)306 static GM* CubicClosePathFactory(void*) { return new CubicClosePathGM; }
307 static GMRegistry regCubicClosePath(CubicClosePathFactory);
308
309 }
310