1 /* 2 * Copyright 2014 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/gm.h" 9 #include "include/core/SkBitmap.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkMatrix.h" 13 #include "include/core/SkPaint.h" 14 #include "include/core/SkPicture.h" 15 #include "include/core/SkPictureRecorder.h" 16 #include "include/core/SkPoint.h" 17 #include "include/core/SkRect.h" 18 #include "include/core/SkRefCnt.h" 19 #include "include/core/SkScalar.h" 20 #include "include/core/SkShader.h" 21 #include "include/core/SkSize.h" 22 #include "include/core/SkString.h" 23 #include "include/core/SkTextBlob.h" 24 #include "include/core/SkTileMode.h" 25 #include "include/core/SkTypes.h" 26 #include "tools/ToolUtils.h" 27 28 static struct { 29 SkTileMode tmx; 30 SkTileMode tmy; 31 } kTileConfigs[] = { 32 { SkTileMode::kRepeat, SkTileMode::kRepeat }, 33 { SkTileMode::kRepeat, SkTileMode::kClamp }, 34 { SkTileMode::kMirror, SkTileMode::kRepeat }, 35 }; 36 37 class PictureShaderGM : public skiagm::GM { 38 public: PictureShaderGM(SkScalar tileSize,SkScalar sceneSize,bool useLocalMatrixWrapper=false,float alpha=1)39 PictureShaderGM(SkScalar tileSize, SkScalar sceneSize, bool useLocalMatrixWrapper = false, 40 float alpha = 1) 41 : fTileSize(tileSize) 42 , fSceneSize(sceneSize) 43 , fAlpha(alpha) 44 , fUseLocalMatrixWrapper(useLocalMatrixWrapper) 45 {} 46 47 protected: onOnceBeforeDraw()48 void onOnceBeforeDraw() override { 49 // Build the picture. 50 SkPictureRecorder recorder; 51 SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize); 52 this->drawTile(pictureCanvas); 53 fPicture = recorder.finishRecordingAsPicture(); 54 55 // Build a reference bitmap. 56 fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize)); 57 fBitmap.eraseColor(SK_ColorTRANSPARENT); 58 SkCanvas bitmapCanvas(fBitmap); 59 this->drawTile(&bitmapCanvas); 60 } 61 62 onShortName()63 SkString onShortName() override { 64 return SkStringPrintf("pictureshader%s%s", 65 fUseLocalMatrixWrapper ? "_localwrapper" : "", 66 fAlpha < 1 ? "_alpha" : ""); 67 } 68 onISize()69 SkISize onISize() override { 70 return SkISize::Make(1400, 1450); 71 } 72 onDraw(SkCanvas * canvas)73 void onDraw(SkCanvas* canvas) override { 74 this->drawSceneColumn(canvas, SkPoint::Make(0, 0), 1, 1, 0); 75 this->drawSceneColumn(canvas, SkPoint::Make(0, fSceneSize * 6.4f), 1, 2, 0); 76 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, 0), 1, 1, 1); 77 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, fSceneSize * 6.4f), 1, 1, 2); 78 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 4.8f, 0), 2, 1, 0); 79 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 9.6f, 0), 2, 2, 0); 80 81 // One last custom row to exercise negative scaling 82 SkMatrix ctm, localMatrix; 83 ctm.setTranslate(fSceneSize * 2.1f, fSceneSize * 13.8f); 84 ctm.preScale(-1, -1); 85 localMatrix.setScale(2, 2); 86 this->drawScene(canvas, ctm, localMatrix, 0); 87 88 ctm.setTranslate(fSceneSize * 2.4f, fSceneSize * 12.8f); 89 localMatrix.setScale(-1, -1); 90 this->drawScene(canvas, ctm, localMatrix, 0); 91 92 ctm.setTranslate(fSceneSize * 4.8f, fSceneSize * 12.3f); 93 ctm.preScale(2, 2); 94 this->drawScene(canvas, ctm, localMatrix, 0); 95 96 ctm.setTranslate(fSceneSize * 13.8f, fSceneSize * 14.3f); 97 ctm.preScale(-2, -2); 98 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 99 localMatrix.preRotate(45); 100 localMatrix.preScale(-2, -2); 101 this->drawScene(canvas, ctm, localMatrix, 0); 102 } 103 104 private: drawSceneColumn(SkCanvas * canvas,const SkPoint & pos,SkScalar scale,SkScalar localScale,unsigned tileMode)105 void drawSceneColumn(SkCanvas* canvas, const SkPoint& pos, SkScalar scale, SkScalar localScale, 106 unsigned tileMode) { 107 SkMatrix ctm, localMatrix; 108 109 ctm.setTranslate(pos.x(), pos.y()); 110 ctm.preScale(scale, scale); 111 localMatrix.setScale(localScale, localScale); 112 this->drawScene(canvas, ctm, localMatrix, tileMode); 113 114 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 1.2f * scale); 115 ctm.preScale(scale, scale); 116 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 117 localMatrix.preScale(localScale, localScale); 118 this->drawScene(canvas, ctm, localMatrix, tileMode); 119 120 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 2.4f * scale); 121 ctm.preScale(scale, scale); 122 localMatrix.setRotate(45); 123 localMatrix.preScale(localScale, localScale); 124 this->drawScene(canvas, ctm, localMatrix, tileMode); 125 126 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 3.6f * scale); 127 ctm.preScale(scale, scale); 128 localMatrix.setSkew(1, 0); 129 localMatrix.preScale(localScale, localScale); 130 this->drawScene(canvas, ctm, localMatrix, tileMode); 131 132 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 4.8f * scale); 133 ctm.preScale(scale, scale); 134 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 135 localMatrix.preRotate(45); 136 localMatrix.preScale(localScale, localScale); 137 this->drawScene(canvas, ctm, localMatrix, tileMode); 138 } 139 drawTile(SkCanvas * canvas)140 void drawTile(SkCanvas* canvas) { 141 SkPaint paint; 142 paint.setColor(SK_ColorGREEN); 143 paint.setStyle(SkPaint::kFill_Style); 144 paint.setAntiAlias(true); 145 146 canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint); 147 canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2, 148 fTileSize / 2, fTileSize / 2), paint); 149 150 paint.setColor(SK_ColorRED); 151 canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3, 152 fTileSize / 2, fTileSize * 2 / 3, paint); 153 canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2, 154 fTileSize * 2 / 3, fTileSize / 2, paint); 155 } 156 drawScene(SkCanvas * canvas,const SkMatrix & matrix,const SkMatrix & localMatrix,unsigned tileMode)157 void drawScene(SkCanvas* canvas, const SkMatrix& matrix, const SkMatrix& localMatrix, 158 unsigned tileMode) { 159 SkASSERT(tileMode < SK_ARRAY_COUNT(kTileConfigs)); 160 161 SkPaint paint; 162 paint.setStyle(SkPaint::kFill_Style); 163 paint.setColor(SK_ColorLTGRAY); 164 165 canvas->save(); 166 canvas->concat(matrix); 167 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 168 canvas->drawRect(SkRect::MakeXYWH(fSceneSize * 1.1f, 0, fSceneSize, fSceneSize), paint); 169 170 paint.setAlphaf(fAlpha); 171 172 auto pictureShader = fPicture->makeShader(kTileConfigs[tileMode].tmx, 173 kTileConfigs[tileMode].tmy, 174 SkFilterMode::kNearest, 175 fUseLocalMatrixWrapper ? nullptr : &localMatrix, 176 nullptr); 177 paint.setShader(fUseLocalMatrixWrapper 178 ? pictureShader->makeWithLocalMatrix(localMatrix) 179 : pictureShader); 180 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 181 182 canvas->translate(fSceneSize * 1.1f, 0); 183 184 auto bitmapShader = fBitmap.makeShader(kTileConfigs[tileMode].tmx, 185 kTileConfigs[tileMode].tmy, 186 SkSamplingOptions(), 187 fUseLocalMatrixWrapper ? nullptr : &localMatrix); 188 paint.setShader(fUseLocalMatrixWrapper 189 ? bitmapShader->makeWithLocalMatrix(localMatrix) 190 : bitmapShader); 191 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 192 193 canvas->restore(); 194 } 195 196 const SkScalar fTileSize; 197 const SkScalar fSceneSize; 198 const float fAlpha; 199 const bool fUseLocalMatrixWrapper; 200 201 sk_sp<SkPicture> fPicture; 202 SkBitmap fBitmap; 203 204 using INHERITED = GM; 205 }; 206 207 DEF_GM(return new PictureShaderGM(50, 100);) 208 DEF_GM(return new PictureShaderGM(50, 100, true);) 209 DEF_GM(return new PictureShaderGM(50, 100, false, 0.25f);) 210 211 DEF_SIMPLE_GM(tiled_picture_shader, canvas, 400, 400) { 212 // https://code.google.com/p/skia/issues/detail?id=3398 213 SkRect tile = SkRect::MakeWH(100, 100); 214 215 SkPictureRecorder recorder; 216 SkCanvas* c = recorder.beginRecording(tile); 217 218 SkRect r = tile; 219 r.inset(4, 4); 220 SkPaint p; 221 p.setColor(ToolUtils::color_to_565(0xFF303F9F)); // dark blue 222 c->drawRect(r, p); 223 p.setColor(ToolUtils::color_to_565(0xFFC5CAE9)); // light blue 224 p.setStrokeWidth(10); 225 c->drawLine(20, 20, 80, 80, p); 226 227 sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture()); 228 229 p.setColor(ToolUtils::color_to_565(0xFF8BC34A)); // green 230 canvas->drawPaint(p); 231 232 canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350)); 233 p.setColor(0xFFB6B6B6); // gray 234 canvas->drawPaint(p); 235 236 p.setShader(picture->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, 237 SkFilterMode::kNearest)); 238 canvas->drawPaint(p); 239 } 240 241 DEF_SIMPLE_GM(pictureshader_persp, canvas, 215, 110) { 242 enum class DrawStrategy { 243 kDirect, 244 kPictureShader, 245 }; 246 __anon000da39b0202(SkCanvas* canvas, sk_sp<SkPicture> picture, DrawStrategy strategy) 247 auto drawPicture = [](SkCanvas* canvas, sk_sp<SkPicture> picture, DrawStrategy strategy) { 248 // Only want local upper 50x50 of 'picture' before we apply decal (or clip) 249 SkRect bounds = {0.f, 0.f, 50.f, 50.f}; 250 switch(strategy) { 251 case DrawStrategy::kDirect: { 252 canvas->clipRect(bounds, true); 253 canvas->drawPicture(picture); 254 break; } 255 case DrawStrategy::kPictureShader: { 256 SkPaint paint; 257 paint.setShader(picture->makeShader(SkTileMode::kDecal, SkTileMode::kDecal, 258 SkFilterMode::kLinear, nullptr, &bounds)); 259 canvas->drawRect({0.f, 0.f, 50.f, 50.f}, paint); 260 break; } 261 } 262 }; 263 __anon000da39b0302() 264 auto picture = []() { 265 sk_sp<SkTypeface> typeface = SkTypeface::MakeDefault(); 266 if (!typeface) { 267 typeface = SkTypeface::MakeFromName("monospace", SkFontStyle()); 268 } 269 SkFont font; 270 font.setTypeface(typeface); 271 font.setHinting(SkFontHinting::kNormal); 272 font.setSize(8.f); 273 274 SkPaint paint; 275 paint.setColor(SK_ColorGREEN); 276 SkPictureRecorder recorder; 277 SkCanvas* record_canvas = recorder.beginRecording({0, 0, 100, 100}); 278 record_canvas->drawTextBlob(SkTextBlob::MakeFromString("Hamburgefons", font), 279 0, 16.f, paint); 280 return recorder.finishRecordingAsPicture(); 281 }(); 282 283 SkM44 m; 284 m.preScale(2.f, 2.f); 285 SkM44 persp = SkM44::Perspective(0.01f, 10.f, SK_ScalarPI / 3.f); 286 persp.preTranslate(0.f, 5.f, -0.1f); 287 persp.preConcat(SkM44::Rotate({0.f, 1.f, 0.f}, 0.008f)); 288 m.postConcat(persp); 289 290 canvas->clear(SK_ColorBLACK); 291 canvas->translate(5.f, 5.f); 292 for (auto strategy : { DrawStrategy::kDirect, 293 DrawStrategy::kPictureShader }) { 294 canvas->save(); 295 296 SkPaint outline; 297 outline.setColor(SK_ColorWHITE); 298 outline.setStyle(SkPaint::kStroke_Style); 299 outline.setStrokeWidth(1.f); 300 canvas->drawRect({-1, -1, 101, 101}, outline); 301 302 canvas->clipRect({0, 0, 100, 100}); 303 canvas->concat(m); 304 305 drawPicture(canvas, picture, strategy); 306 canvas->restore(); 307 308 canvas->translate(105.f, 0.f); 309 } 310 } 311