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
12namespace skiagm {
13
14class QuadPathGM : public GM {
15public:
16    QuadPathGM() {}
17
18protected:
19    virtual uint32_t onGetFlags() const SK_OVERRIDE {
20        return kSkipTiled_Flag;
21    }
22
23    SkString onShortName() {
24        return SkString("quadpath");
25    }
26
27    SkISize onISize() { return SkISize::Make(1240, 390); }
28
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
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, 10*SK_Scalar1);
82        path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
83                          75*SK_Scalar1, 10*SK_Scalar1);
84        path.fName = "moveTo-quad";
85
86        SkPaint titlePaint;
87        titlePaint.setColor(SK_ColorBLACK);
88        titlePaint.setAntiAlias(true);
89        titlePaint.setLCDRenderText(true);
90        titlePaint.setTextSize(15 * SK_Scalar1);
91        const char title[] = "Quad Drawn Into Rectangle Clips With "
92                             "Indicated Style, Fill and Linecaps, with stroke width 10";
93        canvas->drawText(title, strlen(title),
94                            20 * SK_Scalar1,
95                            20 * SK_Scalar1,
96                            titlePaint);
97
98        SkLCGRandom rand;
99        SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
100        canvas->save();
101        canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
102        canvas->save();
103        for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
104            if (0 < cap) {
105                canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
106            }
107            canvas->save();
108            for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
109                if (0 < fill) {
110                    canvas->translate(0, rect.height() + 40 * SK_Scalar1);
111                }
112                canvas->save();
113                for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
114                    if (0 < style) {
115                        canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
116                    }
117
118                    SkColor color = 0xff007000;
119                    this->drawPath(path.fPath, canvas, color, rect,
120                                    gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
121                                    gFills[fill].fFill, SK_Scalar1*10);
122
123                    SkPaint rectPaint;
124                    rectPaint.setColor(SK_ColorBLACK);
125                    rectPaint.setStyle(SkPaint::kStroke_Style);
126                    rectPaint.setStrokeWidth(-1);
127                    rectPaint.setAntiAlias(true);
128                    canvas->drawRect(rect, rectPaint);
129
130                    SkPaint labelPaint;
131                    labelPaint.setColor(color);
132                    labelPaint.setAntiAlias(true);
133                    labelPaint.setLCDRenderText(true);
134                    labelPaint.setTextSize(10 * SK_Scalar1);
135                    canvas->drawText(gStyles[style].fName,
136                                        strlen(gStyles[style].fName),
137                                        0, rect.height() + 12 * SK_Scalar1,
138                                        labelPaint);
139                    canvas->drawText(gFills[fill].fName,
140                                        strlen(gFills[fill].fName),
141                                        0, rect.height() + 24 * SK_Scalar1,
142                                        labelPaint);
143                    canvas->drawText(gCaps[cap].fName,
144                                        strlen(gCaps[cap].fName),
145                                        0, rect.height() + 36 * SK_Scalar1,
146                                        labelPaint);
147                }
148                canvas->restore();
149            }
150            canvas->restore();
151        }
152        canvas->restore();
153        canvas->restore();
154    }
155
156private:
157    typedef GM INHERITED;
158};
159
160class QuadClosePathGM : public GM {
161public:
162    QuadClosePathGM() {}
163
164protected:
165    virtual uint32_t onGetFlags() const SK_OVERRIDE {
166        return kSkipTiled_Flag;
167    }
168
169    SkString onShortName() {
170        return SkString("quadclosepath");
171    }
172
173    SkISize onISize() { return SkISize::Make(1240, 390); }
174
175    void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
176                  const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
177                  SkPaint::Style style, SkPath::FillType fill,
178                  SkScalar strokeWidth) {
179        path.setFillType(fill);
180        SkPaint paint;
181        paint.setStrokeCap(cap);
182        paint.setStrokeWidth(strokeWidth);
183        paint.setStrokeJoin(join);
184        paint.setColor(color);
185        paint.setStyle(style);
186        canvas->save();
187        canvas->clipRect(clip);
188        canvas->drawPath(path, paint);
189        canvas->restore();
190    }
191
192    virtual void onDraw(SkCanvas* canvas) {
193        struct FillAndName {
194            SkPath::FillType fFill;
195            const char*      fName;
196        };
197        static const FillAndName gFills[] = {
198            {SkPath::kWinding_FillType, "Winding"},
199            {SkPath::kEvenOdd_FillType, "Even / Odd"},
200            {SkPath::kInverseWinding_FillType, "Inverse Winding"},
201            {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
202        };
203        struct StyleAndName {
204            SkPaint::Style fStyle;
205            const char*    fName;
206        };
207        static const StyleAndName gStyles[] = {
208            {SkPaint::kFill_Style, "Fill"},
209            {SkPaint::kStroke_Style, "Stroke"},
210            {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
211        };
212        struct CapAndName {
213            SkPaint::Cap  fCap;
214            SkPaint::Join fJoin;
215            const char*   fName;
216        };
217        static const CapAndName gCaps[] = {
218            {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
219            {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
220            {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
221        };
222        struct PathAndName {
223            SkPath      fPath;
224            const char* fName;
225        };
226        PathAndName path;
227        path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
228        path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
229                          75*SK_Scalar1, 10*SK_Scalar1);
230        path.fPath.close();
231        path.fName = "moveTo-quad-close";
232
233        SkPaint titlePaint;
234        titlePaint.setColor(SK_ColorBLACK);
235        titlePaint.setAntiAlias(true);
236        titlePaint.setLCDRenderText(true);
237        titlePaint.setTextSize(15 * SK_Scalar1);
238        const char title[] = "Quad Closed Drawn Into Rectangle Clips With "
239                             "Indicated Style, Fill and Linecaps, with stroke width 10";
240        canvas->drawText(title, strlen(title),
241                            20 * SK_Scalar1,
242                            20 * SK_Scalar1,
243                            titlePaint);
244
245        SkLCGRandom rand;
246        SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
247        canvas->save();
248        canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
249        canvas->save();
250        for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
251            if (0 < cap) {
252                canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
253            }
254            canvas->save();
255            for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
256                if (0 < fill) {
257                    canvas->translate(0, rect.height() + 40 * SK_Scalar1);
258                }
259                canvas->save();
260                for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
261                    if (0 < style) {
262                        canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
263                    }
264
265                    SkColor color = 0xff007000;
266                    this->drawPath(path.fPath, canvas, color, rect,
267                                    gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
268                                    gFills[fill].fFill, SK_Scalar1*10);
269
270                    SkPaint rectPaint;
271                    rectPaint.setColor(SK_ColorBLACK);
272                    rectPaint.setStyle(SkPaint::kStroke_Style);
273                    rectPaint.setStrokeWidth(-1);
274                    rectPaint.setAntiAlias(true);
275                    canvas->drawRect(rect, rectPaint);
276
277                    SkPaint labelPaint;
278                    labelPaint.setColor(color);
279                    labelPaint.setAntiAlias(true);
280                    labelPaint.setLCDRenderText(true);
281                    labelPaint.setTextSize(10 * SK_Scalar1);
282                    canvas->drawText(gStyles[style].fName,
283                                        strlen(gStyles[style].fName),
284                                        0, rect.height() + 12 * SK_Scalar1,
285                                        labelPaint);
286                    canvas->drawText(gFills[fill].fName,
287                                        strlen(gFills[fill].fName),
288                                        0, rect.height() + 24 * SK_Scalar1,
289                                        labelPaint);
290                    canvas->drawText(gCaps[cap].fName,
291                                        strlen(gCaps[cap].fName),
292                                        0, rect.height() + 36 * SK_Scalar1,
293                                        labelPaint);
294                }
295                canvas->restore();
296            }
297            canvas->restore();
298        }
299        canvas->restore();
300        canvas->restore();
301    }
302
303private:
304    typedef GM INHERITED;
305};
306
307//////////////////////////////////////////////////////////////////////////////
308
309static GM* QuadPathFactory(void*) { return new QuadPathGM; }
310static GMRegistry regQuadPath(QuadPathFactory);
311
312static GM* QuadClosePathFactory(void*) { return new QuadClosePathGM; }
313static GMRegistry regQuadClosePath(QuadClosePathFactory);
314
315}
316