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 #include "tools/fonts/FontToolUtils.h" 28 29 static struct { 30 SkTileMode tmx; 31 SkTileMode tmy; 32 } kTileConfigs[] = { 33 { SkTileMode::kRepeat, SkTileMode::kRepeat }, 34 { SkTileMode::kRepeat, SkTileMode::kClamp }, 35 { SkTileMode::kMirror, SkTileMode::kRepeat }, 36 }; 37 38 class PictureShaderGM : public skiagm::GM { 39 public: PictureShaderGM(SkScalar tileSize,SkScalar sceneSize,bool useLocalMatrixWrapper=false,float alpha=1)40 PictureShaderGM(SkScalar tileSize, SkScalar sceneSize, bool useLocalMatrixWrapper = false, 41 float alpha = 1) 42 : fTileSize(tileSize) 43 , fSceneSize(sceneSize) 44 , fAlpha(alpha) 45 , fUseLocalMatrixWrapper(useLocalMatrixWrapper) 46 {} 47 48 protected: onOnceBeforeDraw()49 void onOnceBeforeDraw() override { 50 // Build the picture. 51 SkPictureRecorder recorder; 52 SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize); 53 this->drawTile(pictureCanvas); 54 fPicture = recorder.finishRecordingAsPicture(); 55 56 // Build a reference bitmap. 57 fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize)); 58 fBitmap.eraseColor(SK_ColorTRANSPARENT); 59 SkCanvas bitmapCanvas(fBitmap); 60 this->drawTile(&bitmapCanvas); 61 } 62 getName() const63 SkString getName() const override { 64 return SkStringPrintf("pictureshader%s%s", 65 fUseLocalMatrixWrapper ? "_localwrapper" : "", 66 fAlpha < 1 ? "_alpha" : ""); 67 } 68 getISize()69 SkISize getISize() override { return SkISize::Make(1400, 1450); } 70 onDraw(SkCanvas * canvas)71 void onDraw(SkCanvas* canvas) override { 72 this->drawSceneColumn(canvas, SkPoint::Make(0, 0), 1, 1, 0); 73 this->drawSceneColumn(canvas, SkPoint::Make(0, fSceneSize * 6.4f), 1, 2, 0); 74 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, 0), 1, 1, 1); 75 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, fSceneSize * 6.4f), 1, 1, 2); 76 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 4.8f, 0), 2, 1, 0); 77 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 9.6f, 0), 2, 2, 0); 78 79 // One last custom row to exercise negative scaling 80 SkMatrix ctm, localMatrix; 81 ctm.setTranslate(fSceneSize * 2.1f, fSceneSize * 13.8f); 82 ctm.preScale(-1, -1); 83 localMatrix.setScale(2, 2); 84 this->drawScene(canvas, ctm, localMatrix, 0); 85 86 ctm.setTranslate(fSceneSize * 2.4f, fSceneSize * 12.8f); 87 localMatrix.setScale(-1, -1); 88 this->drawScene(canvas, ctm, localMatrix, 0); 89 90 ctm.setTranslate(fSceneSize * 4.8f, fSceneSize * 12.3f); 91 ctm.preScale(2, 2); 92 this->drawScene(canvas, ctm, localMatrix, 0); 93 94 ctm.setTranslate(fSceneSize * 13.8f, fSceneSize * 14.3f); 95 ctm.preScale(-2, -2); 96 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 97 localMatrix.preRotate(45); 98 localMatrix.preScale(-2, -2); 99 this->drawScene(canvas, ctm, localMatrix, 0); 100 } 101 102 private: drawSceneColumn(SkCanvas * canvas,const SkPoint & pos,SkScalar scale,SkScalar localScale,unsigned tileMode)103 void drawSceneColumn(SkCanvas* canvas, const SkPoint& pos, SkScalar scale, SkScalar localScale, 104 unsigned tileMode) { 105 SkMatrix ctm, localMatrix; 106 107 ctm.setTranslate(pos.x(), pos.y()); 108 ctm.preScale(scale, scale); 109 localMatrix.setScale(localScale, localScale); 110 this->drawScene(canvas, ctm, localMatrix, tileMode); 111 112 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 1.2f * scale); 113 ctm.preScale(scale, scale); 114 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 115 localMatrix.preScale(localScale, localScale); 116 this->drawScene(canvas, ctm, localMatrix, tileMode); 117 118 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 2.4f * scale); 119 ctm.preScale(scale, scale); 120 localMatrix.setRotate(45); 121 localMatrix.preScale(localScale, localScale); 122 this->drawScene(canvas, ctm, localMatrix, tileMode); 123 124 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 3.6f * scale); 125 ctm.preScale(scale, scale); 126 localMatrix.setSkew(1, 0); 127 localMatrix.preScale(localScale, localScale); 128 this->drawScene(canvas, ctm, localMatrix, tileMode); 129 130 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 4.8f * scale); 131 ctm.preScale(scale, scale); 132 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); 133 localMatrix.preRotate(45); 134 localMatrix.preScale(localScale, localScale); 135 this->drawScene(canvas, ctm, localMatrix, tileMode); 136 } 137 drawTile(SkCanvas * canvas)138 void drawTile(SkCanvas* canvas) { 139 SkPaint paint; 140 paint.setColor(SK_ColorGREEN); 141 paint.setStyle(SkPaint::kFill_Style); 142 paint.setAntiAlias(true); 143 144 canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint); 145 canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2, 146 fTileSize / 2, fTileSize / 2), paint); 147 148 paint.setColor(SK_ColorRED); 149 canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3, 150 fTileSize / 2, fTileSize * 2 / 3, paint); 151 canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2, 152 fTileSize * 2 / 3, fTileSize / 2, paint); 153 } 154 drawScene(SkCanvas * canvas,const SkMatrix & matrix,const SkMatrix & localMatrix,unsigned tileMode)155 void drawScene(SkCanvas* canvas, const SkMatrix& matrix, const SkMatrix& localMatrix, 156 unsigned tileMode) { 157 SkASSERT(tileMode < std::size(kTileConfigs)); 158 159 SkPaint paint; 160 paint.setStyle(SkPaint::kFill_Style); 161 paint.setColor(SK_ColorLTGRAY); 162 163 canvas->save(); 164 canvas->concat(matrix); 165 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 166 canvas->drawRect(SkRect::MakeXYWH(fSceneSize * 1.1f, 0, fSceneSize, fSceneSize), paint); 167 168 paint.setAlphaf(fAlpha); 169 170 auto pictureShader = fPicture->makeShader(kTileConfigs[tileMode].tmx, 171 kTileConfigs[tileMode].tmy, 172 SkFilterMode::kNearest, 173 fUseLocalMatrixWrapper ? nullptr : &localMatrix, 174 nullptr); 175 paint.setShader(fUseLocalMatrixWrapper 176 ? pictureShader->makeWithLocalMatrix(localMatrix) 177 : pictureShader); 178 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 179 180 canvas->translate(fSceneSize * 1.1f, 0); 181 182 auto bitmapShader = fBitmap.makeShader(kTileConfigs[tileMode].tmx, 183 kTileConfigs[tileMode].tmy, 184 SkSamplingOptions(), 185 fUseLocalMatrixWrapper ? nullptr : &localMatrix); 186 paint.setShader(fUseLocalMatrixWrapper 187 ? bitmapShader->makeWithLocalMatrix(localMatrix) 188 : bitmapShader); 189 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); 190 191 canvas->restore(); 192 } 193 194 const SkScalar fTileSize; 195 const SkScalar fSceneSize; 196 const float fAlpha; 197 const bool fUseLocalMatrixWrapper; 198 199 sk_sp<SkPicture> fPicture; 200 SkBitmap fBitmap; 201 202 using INHERITED = GM; 203 }; 204 205 DEF_GM(return new PictureShaderGM(50, 100);) 206 DEF_GM(return new PictureShaderGM(50, 100, true);) 207 DEF_GM(return new PictureShaderGM(50, 100, false, 0.25f);) 208 209 DEF_SIMPLE_GM(tiled_picture_shader, canvas, 400, 400) { 210 // https://code.google.com/p/skia/issues/detail?id=3398 211 SkRect tile = SkRect::MakeWH(100, 100); 212 213 SkPictureRecorder recorder; 214 SkCanvas* c = recorder.beginRecording(tile); 215 216 SkRect r = tile; 217 r.inset(4, 4); 218 SkPaint p; 219 p.setColor(ToolUtils::color_to_565(0xFF303F9F)); // dark blue 220 c->drawRect(r, p); 221 p.setColor(ToolUtils::color_to_565(0xFFC5CAE9)); // light blue 222 p.setStrokeWidth(10); 223 c->drawLine(20, 20, 80, 80, p); 224 225 sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture()); 226 227 p.setColor(ToolUtils::color_to_565(0xFF8BC34A)); // green 228 canvas->drawPaint(p); 229 230 canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350)); 231 p.setColor(0xFFB6B6B6); // gray 232 canvas->drawPaint(p); 233 234 p.setShader(picture->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, 235 SkFilterMode::kNearest)); 236 canvas->drawPaint(p); 237 } 238 239 DEF_SIMPLE_GM(pictureshader_persp, canvas, 215, 110) { 240 enum class DrawStrategy { 241 kDirect, 242 kPictureShader, 243 }; 244 __anon510b76250202(SkCanvas* canvas, sk_sp<SkPicture> picture, DrawStrategy strategy) 245 auto drawPicture = [](SkCanvas* canvas, sk_sp<SkPicture> picture, DrawStrategy strategy) { 246 // Only want local upper 50x50 of 'picture' before we apply decal (or clip) 247 SkRect bounds = {0.f, 0.f, 50.f, 50.f}; 248 switch(strategy) { 249 case DrawStrategy::kDirect: { 250 canvas->clipRect(bounds, true); 251 canvas->drawPicture(picture); 252 break; } 253 case DrawStrategy::kPictureShader: { 254 SkPaint paint; 255 paint.setShader(picture->makeShader(SkTileMode::kDecal, SkTileMode::kDecal, 256 SkFilterMode::kLinear, nullptr, &bounds)); 257 canvas->drawRect({0.f, 0.f, 50.f, 50.f}, paint); 258 break; } 259 } 260 }; 261 __anon510b76250302() 262 auto picture = []() { 263 sk_sp<SkTypeface> typeface = ToolUtils::DefaultPortableTypeface(); 264 SkASSERT(typeface); 265 SkFont font; 266 font.setTypeface(typeface); 267 font.setHinting(SkFontHinting::kNormal); 268 font.setSize(8.f); 269 270 SkPaint paint; 271 paint.setColor(SK_ColorGREEN); 272 SkPictureRecorder recorder; 273 SkCanvas* record_canvas = recorder.beginRecording({0, 0, 100, 100}); 274 record_canvas->drawTextBlob(SkTextBlob::MakeFromString("Hamburgefons", font), 275 0, 16.f, paint); 276 return recorder.finishRecordingAsPicture(); 277 }(); 278 279 SkM44 m; 280 m.preScale(2.f, 2.f); 281 SkM44 persp = SkM44::Perspective(0.01f, 10.f, SK_ScalarPI / 3.f); 282 persp.preTranslate(0.f, 5.f, -0.1f); 283 persp.preConcat(SkM44::Rotate({0.f, 1.f, 0.f}, 0.008f)); 284 m.postConcat(persp); 285 286 canvas->clear(SK_ColorBLACK); 287 canvas->translate(5.f, 5.f); 288 for (auto strategy : { DrawStrategy::kDirect, 289 DrawStrategy::kPictureShader }) { 290 canvas->save(); 291 292 SkPaint outline; 293 outline.setColor(SK_ColorWHITE); 294 outline.setStyle(SkPaint::kStroke_Style); 295 outline.setStrokeWidth(1.f); 296 canvas->drawRect({-1, -1, 101, 101}, outline); 297 298 canvas->clipRect({0, 0, 100, 100}); 299 canvas->concat(m); 300 301 drawPicture(canvas, picture, strategy); 302 canvas->restore(); 303 304 canvas->translate(105.f, 0.f); 305 } 306 } 307