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