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 LinePathGM : public GM {
15 public:
LinePathGM()16 LinePathGM() {}
17
18 protected:
onGetFlags() const19 virtual uint32_t onGetFlags() const SK_OVERRIDE {
20 return kSkipTiled_Flag;
21 }
22
onShortName()23 SkString onShortName() {
24 return SkString("linepath");
25 }
26
onISize()27 SkISize onISize() { return SkISize::Make(1240, 390); }
28
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPath::FillType fill,SkScalar strokeWidth)29 void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
30 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
31 SkPaint::Style style, SkPath::FillType fill,
32 SkScalar strokeWidth) {
33 path.setFillType(fill);
34 SkPaint paint;
35 paint.setStrokeCap(cap);
36 paint.setStrokeWidth(strokeWidth);
37 paint.setStrokeJoin(join);
38 paint.setColor(color);
39 paint.setStyle(style);
40 canvas->save();
41 canvas->clipRect(clip);
42 canvas->drawPath(path, paint);
43 canvas->restore();
44 }
45
onDraw(SkCanvas * canvas)46 virtual void onDraw(SkCanvas* canvas) {
47 struct FillAndName {
48 SkPath::FillType fFill;
49 const char* fName;
50 };
51 static const FillAndName gFills[] = {
52 {SkPath::kWinding_FillType, "Winding"},
53 {SkPath::kEvenOdd_FillType, "Even / Odd"},
54 {SkPath::kInverseWinding_FillType, "Inverse Winding"},
55 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
56 };
57 struct StyleAndName {
58 SkPaint::Style fStyle;
59 const char* fName;
60 };
61 static const StyleAndName gStyles[] = {
62 {SkPaint::kFill_Style, "Fill"},
63 {SkPaint::kStroke_Style, "Stroke"},
64 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
65 };
66 struct CapAndName {
67 SkPaint::Cap fCap;
68 SkPaint::Join fJoin;
69 const char* fName;
70 };
71 static const CapAndName gCaps[] = {
72 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
73 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
74 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
75 };
76 struct PathAndName {
77 SkPath fPath;
78 const char* fName;
79 };
80 PathAndName path;
81 path.fPath.moveTo(25*SK_Scalar1, 15*SK_Scalar1);
82 path.fPath.lineTo(75*SK_Scalar1, 15*SK_Scalar1);
83 path.fName = "moveTo-line";
84
85 SkPaint titlePaint;
86 titlePaint.setColor(SK_ColorBLACK);
87 titlePaint.setAntiAlias(true);
88 titlePaint.setLCDRenderText(true);
89 titlePaint.setTextSize(15 * SK_Scalar1);
90 const char title[] = "Line Drawn Into Rectangle Clips With "
91 "Indicated Style, Fill and Linecaps, with stroke width 10";
92 canvas->drawText(title, strlen(title),
93 20 * SK_Scalar1,
94 20 * SK_Scalar1,
95 titlePaint);
96
97 SkLCGRandom rand;
98 SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
99 canvas->save();
100 canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
101 canvas->save();
102 for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
103 if (0 < cap) {
104 canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
105 }
106 canvas->save();
107 for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
108 if (0 < fill) {
109 canvas->translate(0, rect.height() + 40 * SK_Scalar1);
110 }
111 canvas->save();
112 for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
113 if (0 < style) {
114 canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
115 }
116
117 SkColor color = 0xff007000;
118 this->drawPath(path.fPath, canvas, color, rect,
119 gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
120 gFills[fill].fFill, SK_Scalar1*10);
121
122 SkPaint rectPaint;
123 rectPaint.setColor(SK_ColorBLACK);
124 rectPaint.setStyle(SkPaint::kStroke_Style);
125 rectPaint.setStrokeWidth(-1);
126 rectPaint.setAntiAlias(true);
127 canvas->drawRect(rect, rectPaint);
128
129 SkPaint labelPaint;
130 labelPaint.setColor(color);
131 labelPaint.setAntiAlias(true);
132 labelPaint.setLCDRenderText(true);
133 labelPaint.setTextSize(10 * SK_Scalar1);
134 canvas->drawText(gStyles[style].fName,
135 strlen(gStyles[style].fName),
136 0, rect.height() + 12 * SK_Scalar1,
137 labelPaint);
138 canvas->drawText(gFills[fill].fName,
139 strlen(gFills[fill].fName),
140 0, rect.height() + 24 * SK_Scalar1,
141 labelPaint);
142 canvas->drawText(gCaps[cap].fName,
143 strlen(gCaps[cap].fName),
144 0, rect.height() + 36 * SK_Scalar1,
145 labelPaint);
146 }
147 canvas->restore();
148 }
149 canvas->restore();
150 }
151 canvas->restore();
152 canvas->restore();
153 }
154
155 private:
156 typedef GM INHERITED;
157 };
158
159 class LineClosePathGM : public GM {
160 public:
LineClosePathGM()161 LineClosePathGM() {}
162
163 protected:
onShortName()164 SkString onShortName() {
165 return SkString("lineclosepath");
166 }
167
onISize()168 SkISize onISize() { return SkISize::Make(1240, 390); }
169
drawPath(SkPath & path,SkCanvas * canvas,SkColor color,const SkRect & clip,SkPaint::Cap cap,SkPaint::Join join,SkPaint::Style style,SkPath::FillType fill,SkScalar strokeWidth)170 void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
171 const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
172 SkPaint::Style style, SkPath::FillType fill,
173 SkScalar strokeWidth) {
174 path.setFillType(fill);
175 SkPaint paint;
176 paint.setStrokeCap(cap);
177 paint.setStrokeWidth(strokeWidth);
178 paint.setStrokeJoin(join);
179 paint.setColor(color);
180 paint.setStyle(style);
181 canvas->save();
182 canvas->clipRect(clip);
183 canvas->drawPath(path, paint);
184 canvas->restore();
185 }
186
onDraw(SkCanvas * canvas)187 virtual void onDraw(SkCanvas* canvas) {
188 struct FillAndName {
189 SkPath::FillType fFill;
190 const char* fName;
191 };
192 static const FillAndName gFills[] = {
193 {SkPath::kWinding_FillType, "Winding"},
194 {SkPath::kEvenOdd_FillType, "Even / Odd"},
195 {SkPath::kInverseWinding_FillType, "Inverse Winding"},
196 {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
197 };
198 struct StyleAndName {
199 SkPaint::Style fStyle;
200 const char* fName;
201 };
202 static const StyleAndName gStyles[] = {
203 {SkPaint::kFill_Style, "Fill"},
204 {SkPaint::kStroke_Style, "Stroke"},
205 {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
206 };
207 struct CapAndName {
208 SkPaint::Cap fCap;
209 SkPaint::Join fJoin;
210 const char* fName;
211 };
212 static const CapAndName gCaps[] = {
213 {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
214 {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
215 {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
216 };
217 struct PathAndName {
218 SkPath fPath;
219 const char* fName;
220 };
221 PathAndName path;
222 path.fPath.moveTo(25*SK_Scalar1, 15*SK_Scalar1);
223 path.fPath.lineTo(75*SK_Scalar1, 15*SK_Scalar1);
224 path.fPath.close();
225 path.fName = "moveTo-line-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[] = "Line 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 SkLCGRandom 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
LinePathFactory(void *)303 static GM* LinePathFactory(void*) { return new LinePathGM; }
304 static GMRegistry regLinePath(LinePathFactory);
305
LineClosePathFactory(void *)306 static GM* LineClosePathFactory(void*) { return new LineClosePathGM; }
307 static GMRegistry regLineClosePath(LineClosePathFactory);
308
309 }
310