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 QuadPathGM : public GM {
15 public:
QuadPathGM()16 QuadPathGM() {}
17
18 protected:
onShortName()19 SkString onShortName() {
20 return SkString("quadpath");
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.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
79 75*SK_Scalar1, 10*SK_Scalar1);
80 path.fName = "moveTo-quad";
81
82 SkPaint titlePaint;
83 titlePaint.setColor(SK_ColorBLACK);
84 titlePaint.setAntiAlias(true);
85 titlePaint.setLCDRenderText(true);
86 titlePaint.setTextSize(15 * SK_Scalar1);
87 const char title[] = "Quad Drawn Into Rectangle Clips With "
88 "Indicated Style, Fill and Linecaps, with stroke width 10";
89 canvas->drawText(title, strlen(title),
90 20 * SK_Scalar1,
91 20 * SK_Scalar1,
92 titlePaint);
93
94 SkLCGRandom rand;
95 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
96 canvas->save();
97 canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
98 canvas->save();
99 for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
100 if (0 < cap) {
101 canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
102 }
103 canvas->save();
104 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
105 if (0 < fill) {
106 canvas->translate(0, rect.height() + 40 * SK_Scalar1);
107 }
108 canvas->save();
109 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
110 if (0 < style) {
111 canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
112 }
113
114 SkColor color = 0xff007000;
115 this->drawPath(path.fPath, canvas, color, rect,
116 gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
117 gFills[fill].fFill, SK_Scalar1*10);
118
119 SkPaint rectPaint;
120 rectPaint.setColor(SK_ColorBLACK);
121 rectPaint.setStyle(SkPaint::kStroke_Style);
122 rectPaint.setStrokeWidth(-1);
123 rectPaint.setAntiAlias(true);
124 canvas->drawRect(rect, rectPaint);
125
126 SkPaint labelPaint;
127 labelPaint.setColor(color);
128 labelPaint.setAntiAlias(true);
129 labelPaint.setLCDRenderText(true);
130 labelPaint.setTextSize(10 * SK_Scalar1);
131 canvas->drawText(gStyles[style].fName,
132 strlen(gStyles[style].fName),
133 0, rect.height() + 12 * SK_Scalar1,
134 labelPaint);
135 canvas->drawText(gFills[fill].fName,
136 strlen(gFills[fill].fName),
137 0, rect.height() + 24 * SK_Scalar1,
138 labelPaint);
139 canvas->drawText(gCaps[cap].fName,
140 strlen(gCaps[cap].fName),
141 0, rect.height() + 36 * SK_Scalar1,
142 labelPaint);
143 }
144 canvas->restore();
145 }
146 canvas->restore();
147 }
148 canvas->restore();
149 canvas->restore();
150 }
151
152 private:
153 typedef GM INHERITED;
154 };
155
156 class QuadClosePathGM : public GM {
157 public:
QuadClosePathGM()158 QuadClosePathGM() {}
159
160 protected:
onShortName()161 SkString onShortName() {
162 return SkString("quadclosepath");
163 }
164
onISize()165 SkISize onISize() { return make_isize(1240, 390); }
166
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPath::FillType fill,SkScalar strokeWidth)167 void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
168 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
169 SkPaint::Style style, SkPath::FillType fill,
170 SkScalar strokeWidth) {
171 path.setFillType(fill);
172 SkPaint paint;
173 paint.setStrokeCap(cap);
174 paint.setStrokeWidth(strokeWidth);
175 paint.setStrokeJoin(join);
176 paint.setColor(color);
177 paint.setStyle(style);
178 canvas->save();
179 canvas->clipRect(clip);
180 canvas->drawPath(path, paint);
181 canvas->restore();
182 }
183
onDraw(SkCanvas * canvas)184 virtual void onDraw(SkCanvas* canvas) {
185 struct FillAndName {
186 SkPath::FillType fFill;
187 const char* fName;
188 };
189 static const FillAndName gFills[] = {
190 {SkPath::kWinding_FillType, "Winding"},
191 {SkPath::kEvenOdd_FillType, "Even / Odd"},
192 {SkPath::kInverseWinding_FillType, "Inverse Winding"},
193 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
194 };
195 struct StyleAndName {
196 SkPaint::Style fStyle;
197 const char* fName;
198 };
199 static const StyleAndName gStyles[] = {
200 {SkPaint::kFill_Style, "Fill"},
201 {SkPaint::kStroke_Style, "Stroke"},
202 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
203 };
204 struct CapAndName {
205 SkPaint::Cap fCap;
206 SkPaint::Join fJoin;
207 const char* fName;
208 };
209 static const CapAndName gCaps[] = {
210 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
211 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
212 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
213 };
214 struct PathAndName {
215 SkPath fPath;
216 const char* fName;
217 };
218 PathAndName path;
219 path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
220 path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
221 75*SK_Scalar1, 10*SK_Scalar1);
222 path.fPath.close();
223 path.fName = "moveTo-quad-close";
224
225 SkPaint titlePaint;
226 titlePaint.setColor(SK_ColorBLACK);
227 titlePaint.setAntiAlias(true);
228 titlePaint.setLCDRenderText(true);
229 titlePaint.setTextSize(15 * SK_Scalar1);
230 const char title[] = "Quad Closed Drawn Into Rectangle Clips With "
231 "Indicated Style, Fill and Linecaps, with stroke width 10";
232 canvas->drawText(title, strlen(title),
233 20 * SK_Scalar1,
234 20 * SK_Scalar1,
235 titlePaint);
236
237 SkLCGRandom rand;
238 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
239 canvas->save();
240 canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
241 canvas->save();
242 for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
243 if (0 < cap) {
244 canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
245 }
246 canvas->save();
247 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
248 if (0 < fill) {
249 canvas->translate(0, rect.height() + 40 * SK_Scalar1);
250 }
251 canvas->save();
252 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
253 if (0 < style) {
254 canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
255 }
256
257 SkColor color = 0xff007000;
258 this->drawPath(path.fPath, canvas, color, rect,
259 gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
260 gFills[fill].fFill, SK_Scalar1*10);
261
262 SkPaint rectPaint;
263 rectPaint.setColor(SK_ColorBLACK);
264 rectPaint.setStyle(SkPaint::kStroke_Style);
265 rectPaint.setStrokeWidth(-1);
266 rectPaint.setAntiAlias(true);
267 canvas->drawRect(rect, rectPaint);
268
269 SkPaint labelPaint;
270 labelPaint.setColor(color);
271 labelPaint.setAntiAlias(true);
272 labelPaint.setLCDRenderText(true);
273 labelPaint.setTextSize(10 * SK_Scalar1);
274 canvas->drawText(gStyles[style].fName,
275 strlen(gStyles[style].fName),
276 0, rect.height() + 12 * SK_Scalar1,
277 labelPaint);
278 canvas->drawText(gFills[fill].fName,
279 strlen(gFills[fill].fName),
280 0, rect.height() + 24 * SK_Scalar1,
281 labelPaint);
282 canvas->drawText(gCaps[cap].fName,
283 strlen(gCaps[cap].fName),
284 0, rect.height() + 36 * SK_Scalar1,
285 labelPaint);
286 }
287 canvas->restore();
288 }
289 canvas->restore();
290 }
291 canvas->restore();
292 canvas->restore();
293 }
294
295 private:
296 typedef GM INHERITED;
297 };
298
299 //////////////////////////////////////////////////////////////////////////////
300
QuadPathFactory(void *)301 static GM* QuadPathFactory(void*) { return new QuadPathGM; }
302 static GMRegistry regQuadPath(QuadPathFactory);
303
QuadClosePathFactory(void *)304 static GM* QuadClosePathFactory(void*) { return new QuadClosePathGM; }
305 static GMRegistry regQuadClosePath(QuadClosePathFactory);
306
307 }
308