skia/ext/pixel_ref_utils_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/compiler_specific.h"
   6 #include "base/memory/scoped_ptr.h"
   7 #include "cc/test/geometry_test_utils.h"
   8 #include "skia/ext/pixel_ref_utils.h"
   9 #include "skia/ext/refptr.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11 #include "third_party/skia/include/core/SkBitmap.h"
  12 #include "third_party/skia/include/core/SkCanvas.h"
  13 #include "third_party/skia/include/core/SkFlattenableBuffers.h"
  14 #include "third_party/skia/include/core/SkPictureRecorder.h"
  15 #include "third_party/skia/include/core/SkPixelRef.h"
  16 #include "third_party/skia/include/core/SkPoint.h"
  17 #include "third_party/skia/include/core/SkShader.h"
  18 #include "third_party/skia/src/core/SkOrderedReadBuffer.h"
  19 #include "ui/gfx/rect.h"
  20 #include "ui/gfx/skia_util.h"
  21
  22 namespace skia {
  23
  24 namespace {
  25
  26 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap);
  27
  28 class TestDiscardableShader : public SkShader {
  29  public:
  30   TestDiscardableShader() {
  31     CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_);
  32   }
  33
  34   TestDiscardableShader(SkFlattenableReadBuffer& flattenable_buffer) {
  35     SkOrderedReadBuffer& buffer =
  36         static_cast<SkOrderedReadBuffer&>(flattenable_buffer);
  37     SkReader32* reader = buffer.getReader32();
  38
  39     reader->skip(-4);
  40     uint32_t toSkip = reader->readU32();
  41     reader->skip(toSkip);
  42
  43     CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_);
  44   }
  45
  46   virtual SkShader::BitmapType asABitmap(SkBitmap* bitmap,
  47                                          SkMatrix* matrix,
  48                                          TileMode xy[2]) const OVERRIDE {
  49     if (bitmap)
  50       *bitmap = bitmap_;
  51     return SkShader::kDefault_BitmapType;
  52   }
  53
  54   // not indended to return an actual context. Just need to supply this.
  55   virtual size_t contextSize() const OVERRIDE {
  56     return sizeof(SkShader::Context);
  57   }
  58
  59   SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(TestDiscardableShader);
  60
  61  private:
  62   SkBitmap bitmap_;
  63 };
  64
  65 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap) {
  66   bitmap->allocN32Pixels(size.width(), size.height());
  67   bitmap->pixelRef()->setImmutable();
  68   bitmap->pixelRef()->setURI(uri);
  69 }
  70
  71 SkCanvas* StartRecording(SkPictureRecorder* recorder, gfx::Rect layer_rect) {
  72   SkCanvas* canvas =
  73       recorder->beginRecording(layer_rect.width(), layer_rect.height());
  74
  75   canvas->save();
  76   canvas->translate(-layer_rect.x(), -layer_rect.y());
  77   canvas->clipRect(SkRect::MakeXYWH(
  78       layer_rect.x(), layer_rect.y(), layer_rect.width(), layer_rect.height()));
  79
  80   return canvas;
  81 }
  82
  83 SkPicture* StopRecording(SkPictureRecorder* recorder, SkCanvas* canvas) {
  84   canvas->restore();
  85   return recorder->endRecording();
  86 }
  87
  88 }  // namespace
  89
  90 TEST(PixelRefUtilsTest, DrawPaint) {
  91   gfx::Rect layer_rect(0, 0, 256, 256);
  92
  93   SkPictureRecorder recorder;
  94   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
  95
  96   TestDiscardableShader first_shader;
  97   SkPaint first_paint;
  98   first_paint.setShader(&first_shader);
  99
 100   TestDiscardableShader second_shader;
 101   SkPaint second_paint;
 102   second_paint.setShader(&second_shader);
 103
 104   TestDiscardableShader third_shader;
 105   SkPaint third_paint;
 106   third_paint.setShader(&third_shader);
 107
 108   canvas->drawPaint(first_paint);
 109   canvas->clipRect(SkRect::MakeXYWH(34, 45, 56, 67));
 110   canvas->drawPaint(second_paint);
 111   // Total clip is now (34, 45, 56, 55)
 112   canvas->clipRect(SkRect::MakeWH(100, 100));
 113   canvas->drawPaint(third_paint);
 114
 115   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 116
 117   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 118   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 119
 120   EXPECT_EQ(3u, pixel_refs.size());
 121   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 256, 256),
 122                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 123   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 67),
 124                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 125   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 55),
 126                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 127 }
 128
 129 TEST(PixelRefUtilsTest, DrawPoints) {
 130   gfx::Rect layer_rect(0, 0, 256, 256);
 131
 132   SkPictureRecorder recorder;
 133   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 134
 135   TestDiscardableShader first_shader;
 136   SkPaint first_paint;
 137   first_paint.setShader(&first_shader);
 138
 139   TestDiscardableShader second_shader;
 140   SkPaint second_paint;
 141   second_paint.setShader(&second_shader);
 142
 143   TestDiscardableShader third_shader;
 144   SkPaint third_paint;
 145   third_paint.setShader(&third_shader);
 146
 147   SkPoint points[3];
 148   points[0].set(10, 10);
 149   points[1].set(100, 20);
 150   points[2].set(50, 100);
 151   // (10, 10, 90, 90).
 152   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, first_paint);
 153
 154   canvas->save();
 155
 156   canvas->clipRect(SkRect::MakeWH(50, 50));
 157   // (10, 10, 40, 40).
 158   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, second_paint);
 159
 160   canvas->restore();
 161
 162   points[0].set(50, 55);
 163   points[1].set(50, 55);
 164   points[2].set(200, 200);
 165   // (50, 55, 150, 145).
 166   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, third_paint);
 167
 168   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 169
 170   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 171   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 172
 173   EXPECT_EQ(3u, pixel_refs.size());
 174   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
 175                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 176   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
 177                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 178   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
 179                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 180 }
 181
 182 TEST(PixelRefUtilsTest, DrawRect) {
 183   gfx::Rect layer_rect(0, 0, 256, 256);
 184
 185   SkPictureRecorder recorder;
 186   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 187
 188   TestDiscardableShader first_shader;
 189   SkPaint first_paint;
 190   first_paint.setShader(&first_shader);
 191
 192   TestDiscardableShader second_shader;
 193   SkPaint second_paint;
 194   second_paint.setShader(&second_shader);
 195
 196   TestDiscardableShader third_shader;
 197   SkPaint third_paint;
 198   third_paint.setShader(&third_shader);
 199
 200   // (10, 20, 30, 40).
 201   canvas->drawRect(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
 202
 203   canvas->save();
 204
 205   canvas->translate(5, 17);
 206   // (5, 50, 25, 35)
 207   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
 208
 209   canvas->restore();
 210
 211   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
 212   canvas->translate(20, 20);
 213   // (50, 50, 50, 50)
 214   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
 215
 216   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 217
 218   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 219   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 220
 221   EXPECT_EQ(3u, pixel_refs.size());
 222   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
 223                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 224   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
 225                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 226   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
 227                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 228 }
 229
 230 TEST(PixelRefUtilsTest, DrawRRect) {
 231   gfx::Rect layer_rect(0, 0, 256, 256);
 232
 233   SkPictureRecorder recorder;
 234   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 235
 236   TestDiscardableShader first_shader;
 237   SkPaint first_paint;
 238   first_paint.setShader(&first_shader);
 239
 240   TestDiscardableShader second_shader;
 241   SkPaint second_paint;
 242   second_paint.setShader(&second_shader);
 243
 244   TestDiscardableShader third_shader;
 245   SkPaint third_paint;
 246   third_paint.setShader(&third_shader);
 247
 248   SkRRect rrect;
 249   rrect.setRect(SkRect::MakeXYWH(10, 20, 30, 40));
 250
 251   // (10, 20, 30, 40).
 252   canvas->drawRRect(rrect, first_paint);
 253
 254   canvas->save();
 255
 256   canvas->translate(5, 17);
 257   rrect.setRect(SkRect::MakeXYWH(0, 33, 25, 35));
 258   // (5, 50, 25, 35)
 259   canvas->drawRRect(rrect, second_paint);
 260
 261   canvas->restore();
 262
 263   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
 264   canvas->translate(20, 20);
 265   rrect.setRect(SkRect::MakeXYWH(0, 0, 100, 100));
 266   // (50, 50, 50, 50)
 267   canvas->drawRRect(rrect, third_paint);
 268
 269   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 270
 271   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 272   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 273
 274   EXPECT_EQ(3u, pixel_refs.size());
 275   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
 276                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 277   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
 278                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 279   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
 280                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 281 }
 282
 283 TEST(PixelRefUtilsTest, DrawOval) {
 284   gfx::Rect layer_rect(0, 0, 256, 256);
 285
 286   SkPictureRecorder recorder;
 287   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 288
 289   TestDiscardableShader first_shader;
 290   SkPaint first_paint;
 291   first_paint.setShader(&first_shader);
 292
 293   TestDiscardableShader second_shader;
 294   SkPaint second_paint;
 295   second_paint.setShader(&second_shader);
 296
 297   TestDiscardableShader third_shader;
 298   SkPaint third_paint;
 299   third_paint.setShader(&third_shader);
 300
 301   canvas->save();
 302
 303   canvas->scale(2, 0.5);
 304   // (20, 10, 60, 20).
 305   canvas->drawOval(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
 306
 307   canvas->restore();
 308   canvas->save();
 309
 310   canvas->translate(1, 2);
 311   // (1, 35, 25, 35)
 312   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
 313
 314   canvas->restore();
 315
 316   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
 317   canvas->translate(20, 20);
 318   // (50, 50, 50, 50)
 319   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
 320
 321   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 322
 323   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 324   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 325
 326   EXPECT_EQ(3u, pixel_refs.size());
 327   EXPECT_FLOAT_RECT_EQ(gfx::RectF(20, 10, 60, 20),
 328                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 329   EXPECT_FLOAT_RECT_EQ(gfx::RectF(1, 35, 25, 35),
 330                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 331   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
 332                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 333 }
 334
 335 TEST(PixelRefUtilsTest, DrawPath) {
 336   gfx::Rect layer_rect(0, 0, 256, 256);
 337
 338   SkPictureRecorder recorder;
 339   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 340
 341   TestDiscardableShader first_shader;
 342   SkPaint first_paint;
 343   first_paint.setShader(&first_shader);
 344
 345   TestDiscardableShader second_shader;
 346   SkPaint second_paint;
 347   second_paint.setShader(&second_shader);
 348
 349   SkPath path;
 350   path.moveTo(12, 13);
 351   path.lineTo(50, 50);
 352   path.lineTo(22, 101);
 353
 354   // (12, 13, 38, 88).
 355   canvas->drawPath(path, first_paint);
 356
 357   canvas->save();
 358   canvas->clipRect(SkRect::MakeWH(50, 50));
 359
 360   // (12, 13, 38, 37).
 361   canvas->drawPath(path, second_paint);
 362
 363   canvas->restore();
 364
 365   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 366
 367   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 368   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 369
 370   EXPECT_EQ(2u, pixel_refs.size());
 371   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 88),
 372                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 373   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 37),
 374                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 375 }
 376
 377 TEST(PixelRefUtilsTest, DrawBitmap) {
 378   gfx::Rect layer_rect(0, 0, 256, 256);
 379
 380   SkPictureRecorder recorder;
 381   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 382
 383   SkBitmap first;
 384   CreateBitmap(gfx::Size(50, 50), "discardable", &first);
 385   SkBitmap second;
 386   CreateBitmap(gfx::Size(50, 50), "discardable", &second);
 387   SkBitmap third;
 388   CreateBitmap(gfx::Size(50, 50), "discardable", &third);
 389   SkBitmap fourth;
 390   CreateBitmap(gfx::Size(50, 1), "discardable", &fourth);
 391   SkBitmap fifth;
 392   CreateBitmap(gfx::Size(10, 10), "discardable", &fifth);
 393
 394   canvas->save();
 395
 396   // At (0, 0).
 397   canvas->drawBitmap(first, 0, 0);
 398   canvas->translate(25, 0);
 399   // At (25, 0).
 400   canvas->drawBitmap(second, 0, 0);
 401   canvas->translate(0, 50);
 402   // At (50, 50).
 403   canvas->drawBitmap(third, 25, 0);
 404
 405   canvas->restore();
 406   canvas->save();
 407
 408   canvas->translate(1, 0);
 409   canvas->rotate(90);
 410   // At (1, 0), rotated 90 degrees
 411   canvas->drawBitmap(fourth, 0, 0);
 412
 413   canvas->restore();
 414
 415   canvas->scale(5, 6);
 416   // At (0, 0), scaled by 5 and 6
 417   canvas->drawBitmap(fifth, 0, 0);
 418
 419   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 420
 421   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 422   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 423
 424   EXPECT_EQ(5u, pixel_refs.size());
 425   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
 426                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 427   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
 428                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 429   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
 430                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 431   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 1, 50),
 432                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
 433   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 60),
 434                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
 435
 436 }
 437
 438 TEST(PixelRefUtilsTest, DrawBitmapRect) {
 439   gfx::Rect layer_rect(0, 0, 256, 256);
 440
 441   SkPictureRecorder recorder;
 442   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 443
 444   SkBitmap first;
 445   CreateBitmap(gfx::Size(50, 50), "discardable", &first);
 446   SkBitmap second;
 447   CreateBitmap(gfx::Size(50, 50), "discardable", &second);
 448   SkBitmap third;
 449   CreateBitmap(gfx::Size(50, 50), "discardable", &third);
 450
 451   TestDiscardableShader first_shader;
 452   SkPaint first_paint;
 453   first_paint.setShader(&first_shader);
 454
 455   SkPaint non_discardable_paint;
 456
 457   canvas->save();
 458
 459   // (0, 0, 100, 100).
 460   canvas->drawBitmapRect(
 461       first, SkRect::MakeWH(100, 100), &non_discardable_paint);
 462   canvas->translate(25, 0);
 463   // (75, 50, 10, 10).
 464   canvas->drawBitmapRect(
 465       second, SkRect::MakeXYWH(50, 50, 10, 10), &non_discardable_paint);
 466   canvas->translate(5, 50);
 467   // (0, 30, 100, 100). One from bitmap, one from paint.
 468   canvas->drawBitmapRect(
 469       third, SkRect::MakeXYWH(-30, -20, 100, 100), &first_paint);
 470
 471   canvas->restore();
 472
 473   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 474
 475   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 476   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 477
 478   EXPECT_EQ(4u, pixel_refs.size());
 479   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 100, 100),
 480                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 481   EXPECT_FLOAT_RECT_EQ(gfx::RectF(75, 50, 10, 10),
 482                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 483   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
 484                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 485   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
 486                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
 487 }
 488
 489 TEST(PixelRefUtilsTest, DrawSprite) {
 490   gfx::Rect layer_rect(0, 0, 256, 256);
 491
 492   SkPictureRecorder recorder;
 493   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 494
 495   SkBitmap first;
 496   CreateBitmap(gfx::Size(50, 50), "discardable", &first);
 497   SkBitmap second;
 498   CreateBitmap(gfx::Size(50, 50), "discardable", &second);
 499   SkBitmap third;
 500   CreateBitmap(gfx::Size(50, 50), "discardable", &third);
 501   SkBitmap fourth;
 502   CreateBitmap(gfx::Size(50, 50), "discardable", &fourth);
 503   SkBitmap fifth;
 504   CreateBitmap(gfx::Size(50, 50), "discardable", &fifth);
 505
 506   canvas->save();
 507
 508   // Sprites aren't affected by the current matrix.
 509
 510   // (0, 0, 50, 50).
 511   canvas->drawSprite(first, 0, 0);
 512   canvas->translate(25, 0);
 513   // (10, 0, 50, 50).
 514   canvas->drawSprite(second, 10, 0);
 515   canvas->translate(0, 50);
 516   // (25, 0, 50, 50).
 517   canvas->drawSprite(third, 25, 0);
 518
 519   canvas->restore();
 520   canvas->save();
 521
 522   canvas->rotate(90);
 523   // (0, 0, 50, 50).
 524   canvas->drawSprite(fourth, 0, 0);
 525
 526   canvas->restore();
 527
 528   TestDiscardableShader first_shader;
 529   SkPaint first_paint;
 530   first_paint.setShader(&first_shader);
 531
 532   canvas->scale(5, 6);
 533   // (100, 100, 50, 50).
 534   canvas->drawSprite(fifth, 100, 100, &first_paint);
 535
 536   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 537
 538   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 539   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 540
 541   EXPECT_EQ(6u, pixel_refs.size());
 542   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
 543                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 544   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 0, 50, 50),
 545                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 546   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
 547                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 548   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
 549                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
 550   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
 551                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
 552   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
 553                        gfx::SkRectToRectF(pixel_refs[5].pixel_ref_rect));
 554 }
 555
 556 TEST(PixelRefUtilsTest, DrawText) {
 557   gfx::Rect layer_rect(0, 0, 256, 256);
 558
 559   SkPictureRecorder recorder;
 560   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 561
 562   TestDiscardableShader first_shader;
 563   SkPaint first_paint;
 564   first_paint.setShader(&first_shader);
 565
 566   SkPoint points[4];
 567   points[0].set(10, 50);
 568   points[1].set(20, 50);
 569   points[2].set(30, 50);
 570   points[3].set(40, 50);
 571
 572   SkPath path;
 573   path.moveTo(10, 50);
 574   path.lineTo(20, 50);
 575   path.lineTo(30, 50);
 576   path.lineTo(40, 50);
 577   path.lineTo(50, 50);
 578
 579   canvas->drawText("text", 4, 50, 50, first_paint);
 580   canvas->drawPosText("text", 4, points, first_paint);
 581   canvas->drawTextOnPath("text", 4, path, NULL, first_paint);
 582
 583   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 584
 585   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 586   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 587
 588   EXPECT_EQ(3u, pixel_refs.size());
 589 }
 590
 591 TEST(PixelRefUtilsTest, DrawVertices) {
 592   gfx::Rect layer_rect(0, 0, 256, 256);
 593
 594   SkPictureRecorder recorder;
 595   SkCanvas* canvas = StartRecording(&recorder, layer_rect);
 596
 597   TestDiscardableShader first_shader;
 598   SkPaint first_paint;
 599   first_paint.setShader(&first_shader);
 600
 601   TestDiscardableShader second_shader;
 602   SkPaint second_paint;
 603   second_paint.setShader(&second_shader);
 604
 605   TestDiscardableShader third_shader;
 606   SkPaint third_paint;
 607   third_paint.setShader(&third_shader);
 608
 609   SkPoint points[3];
 610   SkColor colors[3];
 611   uint16_t indecies[3] = {0, 1, 2};
 612   points[0].set(10, 10);
 613   points[1].set(100, 20);
 614   points[2].set(50, 100);
 615   // (10, 10, 90, 90).
 616   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
 617                        3,
 618                        points,
 619                        points,
 620                        colors,
 621                        NULL,
 622                        indecies,
 623                        3,
 624                        first_paint);
 625
 626   canvas->save();
 627
 628   canvas->clipRect(SkRect::MakeWH(50, 50));
 629   // (10, 10, 40, 40).
 630   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
 631                        3,
 632                        points,
 633                        points,
 634                        colors,
 635                        NULL,
 636                        indecies,
 637                        3,
 638                        second_paint);
 639
 640   canvas->restore();
 641
 642   points[0].set(50, 55);
 643   points[1].set(50, 55);
 644   points[2].set(200, 200);
 645   // (50, 55, 150, 145).
 646   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
 647                        3,
 648                        points,
 649                        points,
 650                        colors,
 651                        NULL,
 652                        indecies,
 653                        3,
 654                        third_paint);
 655
 656   skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas));
 657
 658   std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs;
 659   skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs);
 660
 661   EXPECT_EQ(3u, pixel_refs.size());
 662   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
 663                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
 664   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
 665                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
 666   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
 667                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
 668 }
 669
 670 }  // namespace skia