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.h"
9#include "sk_tool_utils.h"
10#include "SkCanvas.h"
11#include "SkPaint.h"
12#include "SkPath.h"
13#include "SkRandom.h"
14
15namespace skiagm {
16
17class QuadPathGM : public GM {
18public:
19    QuadPathGM() {}
20
21protected:
22
23    SkString onShortName() override {
24        return SkString("quadpath");
25    }
26
27    SkISize onISize() override { 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    void onDraw(SkCanvas* canvas) override {
47        struct FillAndName {
48            SkPath::FillType fFill;
49            const char*      fName;
50        };
51        constexpr 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        constexpr 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        constexpr 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        sk_tool_utils::set_portable_typeface(&titlePaint);
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->drawString(title,
94                           20 * SK_Scalar1,
95                           20 * SK_Scalar1,
96                           titlePaint);
97
98        SkRandom 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 = sk_tool_utils::color_to_565(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                    sk_tool_utils::set_portable_typeface(&labelPaint);
134                    labelPaint.setTextSize(10 * SK_Scalar1);
135                    canvas->drawString(gStyles[style].fName,
136                                       0, rect.height() + 12 * SK_Scalar1,
137                                       labelPaint);
138                    canvas->drawString(gFills[fill].fName,
139                                       0, rect.height() + 24 * SK_Scalar1,
140                                       labelPaint);
141                    canvas->drawString(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
153private:
154    typedef GM INHERITED;
155};
156
157class QuadClosePathGM : public GM {
158public:
159    QuadClosePathGM() {}
160
161protected:
162
163    SkString onShortName() override {
164        return SkString("quadclosepath");
165    }
166
167    SkISize onISize() override { return SkISize::Make(1240, 390); }
168
169    void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
170                  const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
171                  SkPaint::Style style, SkPath::FillType fill,
172                  SkScalar strokeWidth) {
173        path.setFillType(fill);
174        SkPaint paint;
175        paint.setStrokeCap(cap);
176        paint.setStrokeWidth(strokeWidth);
177        paint.setStrokeJoin(join);
178        paint.setColor(color);
179        paint.setStyle(style);
180        canvas->save();
181        canvas->clipRect(clip);
182        canvas->drawPath(path, paint);
183        canvas->restore();
184    }
185
186    void onDraw(SkCanvas* canvas) override {
187        struct FillAndName {
188            SkPath::FillType fFill;
189            const char*      fName;
190        };
191        constexpr FillAndName gFills[] = {
192            {SkPath::kWinding_FillType, "Winding"},
193            {SkPath::kEvenOdd_FillType, "Even / Odd"},
194            {SkPath::kInverseWinding_FillType, "Inverse Winding"},
195            {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
196        };
197        struct StyleAndName {
198            SkPaint::Style fStyle;
199            const char*    fName;
200        };
201        constexpr StyleAndName gStyles[] = {
202            {SkPaint::kFill_Style, "Fill"},
203            {SkPaint::kStroke_Style, "Stroke"},
204            {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
205        };
206        struct CapAndName {
207            SkPaint::Cap  fCap;
208            SkPaint::Join fJoin;
209            const char*   fName;
210        };
211        constexpr CapAndName gCaps[] = {
212            {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
213            {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
214            {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
215        };
216        struct PathAndName {
217            SkPath      fPath;
218            const char* fName;
219        };
220        PathAndName path;
221        path.fPath.moveTo(25*SK_Scalar1, 10*SK_Scalar1);
222        path.fPath.quadTo(50*SK_Scalar1, 20*SK_Scalar1,
223                          75*SK_Scalar1, 10*SK_Scalar1);
224        path.fPath.close();
225        path.fName = "moveTo-quad-close";
226
227        SkPaint titlePaint;
228        titlePaint.setColor(SK_ColorBLACK);
229        titlePaint.setAntiAlias(true);
230        sk_tool_utils::set_portable_typeface(&titlePaint);
231        titlePaint.setTextSize(15 * SK_Scalar1);
232        const char title[] = "Quad Closed Drawn Into Rectangle Clips With "
233                             "Indicated Style, Fill and Linecaps, with stroke width 10";
234        canvas->drawString(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 = sk_tool_utils::color_to_565(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                    sk_tool_utils::set_portable_typeface(&labelPaint);
275                    labelPaint.setTextSize(10 * SK_Scalar1);
276                    canvas->drawString(gStyles[style].fName,
277                                       0, rect.height() + 12 * SK_Scalar1,
278                                       labelPaint);
279                    canvas->drawString(gFills[fill].fName,
280                                       0, rect.height() + 24 * SK_Scalar1,
281                                       labelPaint);
282                    canvas->drawString(gCaps[cap].fName,
283                                       0, rect.height() + 36 * SK_Scalar1,
284                                       labelPaint);
285                }
286                canvas->restore();
287            }
288            canvas->restore();
289        }
290        canvas->restore();
291        canvas->restore();
292    }
293
294private:
295    typedef GM INHERITED;
296};
297
298//////////////////////////////////////////////////////////////////////////////
299
300static GM* QuadPathFactory(void*) { return new QuadPathGM; }
301static GMRegistry regQuadPath(QuadPathFactory);
302
303static GM* QuadClosePathFactory(void*) { return new QuadClosePathGM; }
304static GMRegistry regQuadClosePath(QuadClosePathFactory);
305
306}
307