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1 // Copyright 2013 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/lazy_pixel_ref.h"
9 #include "skia/ext/lazy_pixel_ref_utils.h"
10 #include "skia/ext/refptr.h"
11 #include "testing/gtest/include/gtest/gtest.h"
12 #include "third_party/skia/include/core/SkBitmap.h"
13 #include "third_party/skia/include/core/SkCanvas.h"
14 #include "third_party/skia/include/core/SkFlattenableBuffers.h"
15 #include "third_party/skia/include/core/SkPoint.h"
16 #include "third_party/skia/include/core/SkShader.h"
17 #include "third_party/skia/src/core/SkOrderedReadBuffer.h"
18 #include "ui/gfx/rect.h"
19 #include "ui/gfx/skia_util.h"
20 
21 namespace skia {
22 
23 namespace {
24 
25 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap);
26 
27 class TestPixelRef : public SkPixelRef {
28  public:
29   TestPixelRef(int width, int height);
30   virtual ~TestPixelRef();
31 
32   virtual SkFlattenable::Factory getFactory() const OVERRIDE;
33   virtual void* onLockPixels(SkColorTable** color_table) OVERRIDE;
onUnlockPixels()34   virtual void onUnlockPixels() OVERRIDE {}
35   virtual SkPixelRef* deepCopy(SkBitmap::Config config, const SkIRect* subset)
36       OVERRIDE;
37 
38  private:
39   scoped_ptr<char[]> pixels_;
40 };
41 
42 class TestLazyPixelRef : public skia::LazyPixelRef {
43  public:
44   TestLazyPixelRef(int width, int height);
45   virtual ~TestLazyPixelRef();
46 
47   virtual SkFlattenable::Factory getFactory() const OVERRIDE;
48   virtual void* onLockPixels(SkColorTable** color_table) OVERRIDE;
onUnlockPixels()49   virtual void onUnlockPixels() OVERRIDE {}
50   virtual bool PrepareToDecode(const PrepareParams& params) OVERRIDE;
51   virtual bool MaybeDecoded() OVERRIDE;
52   virtual SkPixelRef* deepCopy(SkBitmap::Config config, const SkIRect* subset)
53       OVERRIDE;
Decode()54   virtual void Decode() OVERRIDE {}
55 
56  private:
57   scoped_ptr<char[]> pixels_;
58 };
59 
60 class TestLazyShader : public SkShader {
61  public:
TestLazyShader()62   TestLazyShader() { CreateBitmap(gfx::Size(50, 50), "lazy", &bitmap_); }
63 
TestLazyShader(SkFlattenableReadBuffer & flattenable_buffer)64   TestLazyShader(SkFlattenableReadBuffer& flattenable_buffer) {
65     SkOrderedReadBuffer& buffer =
66         static_cast<SkOrderedReadBuffer&>(flattenable_buffer);
67     SkReader32* reader = buffer.getReader32();
68 
69     reader->skip(-4);
70     uint32_t toSkip = reader->readU32();
71     reader->skip(toSkip);
72 
73     CreateBitmap(gfx::Size(50, 50), "lazy", &bitmap_);
74   }
75 
asABitmap(SkBitmap * bitmap,SkMatrix * matrix,TileMode xy[2]) const76   virtual SkShader::BitmapType asABitmap(SkBitmap* bitmap,
77                                          SkMatrix* matrix,
78                                          TileMode xy[2]) const OVERRIDE {
79     if (bitmap)
80       *bitmap = bitmap_;
81     return SkShader::kDefault_BitmapType;
82   }
83 
84   // Pure virtual implementaiton.
shadeSpan(int x,int y,SkPMColor[],int count)85   virtual void shadeSpan(int x, int y, SkPMColor[], int count) OVERRIDE {}
86   SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(TestLazyShader);
87 
88  private:
89   SkBitmap bitmap_;
90 };
91 
TestPixelRef(int width,int height)92 TestPixelRef::TestPixelRef(int width, int height)
93     : pixels_(new char[4 * width * height]) {}
94 
~TestPixelRef()95 TestPixelRef::~TestPixelRef() {}
96 
getFactory() const97 SkFlattenable::Factory TestPixelRef::getFactory() const { return NULL; }
98 
onLockPixels(SkColorTable ** color_table)99 void* TestPixelRef::onLockPixels(SkColorTable** color_table) {
100   return pixels_.get();
101 }
102 
deepCopy(SkBitmap::Config config,const SkIRect * subset)103 SkPixelRef* TestPixelRef::deepCopy(SkBitmap::Config config,
104                                    const SkIRect* subset) {
105   this->ref();
106   return this;
107 }
108 
TestLazyPixelRef(int width,int height)109 TestLazyPixelRef::TestLazyPixelRef(int width, int height)
110     : pixels_(new char[4 * width * height]) {}
111 
~TestLazyPixelRef()112 TestLazyPixelRef::~TestLazyPixelRef() {}
113 
getFactory() const114 SkFlattenable::Factory TestLazyPixelRef::getFactory() const { return NULL; }
115 
onLockPixels(SkColorTable ** color_table)116 void* TestLazyPixelRef::onLockPixels(SkColorTable** color_table) {
117   return pixels_.get();
118 }
119 
PrepareToDecode(const PrepareParams & params)120 bool TestLazyPixelRef::PrepareToDecode(const PrepareParams& params) {
121   return true;
122 }
123 
MaybeDecoded()124 bool TestLazyPixelRef::MaybeDecoded() {
125   return true;
126 }
127 
deepCopy(SkBitmap::Config config,const SkIRect * subset)128 SkPixelRef* TestLazyPixelRef::deepCopy(SkBitmap::Config config,
129                                        const SkIRect* subset) {
130   this->ref();
131   return this;
132 }
133 
CreateBitmap(gfx::Size size,const char * uri,SkBitmap * bitmap)134 void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap) {
135   skia::RefPtr<TestLazyPixelRef> lazy_pixel_ref =
136       skia::AdoptRef(new TestLazyPixelRef(size.width(), size.height()));
137   lazy_pixel_ref->setURI(uri);
138 
139   bitmap->setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
140   bitmap->setPixelRef(lazy_pixel_ref.get());
141 }
142 
StartRecording(SkPicture * picture,gfx::Rect layer_rect)143 SkCanvas* StartRecording(SkPicture* picture, gfx::Rect layer_rect) {
144   SkCanvas* canvas = picture->beginRecording(
145       layer_rect.width(),
146       layer_rect.height(),
147       SkPicture::kUsePathBoundsForClip_RecordingFlag |
148           SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
149 
150   canvas->save();
151   canvas->translate(-layer_rect.x(), -layer_rect.y());
152   canvas->clipRect(SkRect::MakeXYWH(
153       layer_rect.x(), layer_rect.y(), layer_rect.width(), layer_rect.height()));
154 
155   return canvas;
156 }
157 
StopRecording(SkPicture * picture,SkCanvas * canvas)158 void StopRecording(SkPicture* picture, SkCanvas* canvas) {
159   canvas->restore();
160   picture->endRecording();
161 }
162 
163 }  // namespace
164 
TEST(LazyPixelRefUtilsTest,DrawPaint)165 TEST(LazyPixelRefUtilsTest, DrawPaint) {
166   gfx::Rect layer_rect(0, 0, 256, 256);
167 
168   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
169   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
170 
171   TestLazyShader first_shader;
172   SkPaint first_paint;
173   first_paint.setShader(&first_shader);
174 
175   TestLazyShader second_shader;
176   SkPaint second_paint;
177   second_paint.setShader(&second_shader);
178 
179   TestLazyShader third_shader;
180   SkPaint third_paint;
181   third_paint.setShader(&third_shader);
182 
183   canvas->drawPaint(first_paint);
184   canvas->clipRect(SkRect::MakeXYWH(34, 45, 56, 67));
185   canvas->drawPaint(second_paint);
186   // Total clip is now (34, 45, 56, 55)
187   canvas->clipRect(SkRect::MakeWH(100, 100));
188   canvas->drawPaint(third_paint);
189 
190   StopRecording(picture.get(), canvas);
191 
192   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
193   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
194 
195   EXPECT_EQ(3u, pixel_refs.size());
196   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 256, 256),
197                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
198   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 67),
199                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
200   EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 55),
201                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
202 }
203 
TEST(LazyPixelRefUtilsTest,DrawPoints)204 TEST(LazyPixelRefUtilsTest, DrawPoints) {
205   gfx::Rect layer_rect(0, 0, 256, 256);
206 
207   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
208   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
209 
210   TestLazyShader first_shader;
211   SkPaint first_paint;
212   first_paint.setShader(&first_shader);
213 
214   TestLazyShader second_shader;
215   SkPaint second_paint;
216   second_paint.setShader(&second_shader);
217 
218   TestLazyShader third_shader;
219   SkPaint third_paint;
220   third_paint.setShader(&third_shader);
221 
222   SkPoint points[3];
223   points[0].set(10, 10);
224   points[1].set(100, 20);
225   points[2].set(50, 100);
226   // (10, 10, 90, 90).
227   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, first_paint);
228 
229   canvas->save();
230 
231   canvas->clipRect(SkRect::MakeWH(50, 50));
232   // (10, 10, 40, 40).
233   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, second_paint);
234 
235   canvas->restore();
236 
237   points[0].set(50, 55);
238   points[1].set(50, 55);
239   points[2].set(200, 200);
240   // (50, 55, 150, 145).
241   canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, third_paint);
242 
243   StopRecording(picture.get(), canvas);
244 
245   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
246   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
247 
248   EXPECT_EQ(3u, pixel_refs.size());
249   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
250                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
251   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
252                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
253   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
254                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
255 }
256 
TEST(LazyPixelRefUtilsTest,DrawRect)257 TEST(LazyPixelRefUtilsTest, DrawRect) {
258   gfx::Rect layer_rect(0, 0, 256, 256);
259 
260   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
261   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
262 
263   TestLazyShader first_shader;
264   SkPaint first_paint;
265   first_paint.setShader(&first_shader);
266 
267   TestLazyShader second_shader;
268   SkPaint second_paint;
269   second_paint.setShader(&second_shader);
270 
271   TestLazyShader third_shader;
272   SkPaint third_paint;
273   third_paint.setShader(&third_shader);
274 
275   // (10, 20, 30, 40).
276   canvas->drawRect(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
277 
278   canvas->save();
279 
280   canvas->translate(5, 17);
281   // (5, 50, 25, 35)
282   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
283 
284   canvas->restore();
285 
286   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
287   canvas->translate(20, 20);
288   // (50, 50, 50, 50)
289   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
290 
291   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
292   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
293 
294   EXPECT_EQ(3u, pixel_refs.size());
295   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
296                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
297   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
298                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
299   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
300                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
301 }
302 
TEST(LazyPixelRefUtilsTest,DrawRRect)303 TEST(LazyPixelRefUtilsTest, DrawRRect) {
304   gfx::Rect layer_rect(0, 0, 256, 256);
305 
306   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
307   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
308 
309   TestLazyShader first_shader;
310   SkPaint first_paint;
311   first_paint.setShader(&first_shader);
312 
313   TestLazyShader second_shader;
314   SkPaint second_paint;
315   second_paint.setShader(&second_shader);
316 
317   TestLazyShader third_shader;
318   SkPaint third_paint;
319   third_paint.setShader(&third_shader);
320 
321   SkRRect rrect;
322   rrect.setRect(SkRect::MakeXYWH(10, 20, 30, 40));
323 
324   // (10, 20, 30, 40).
325   canvas->drawRRect(rrect, first_paint);
326 
327   canvas->save();
328 
329   canvas->translate(5, 17);
330   rrect.setRect(SkRect::MakeXYWH(0, 33, 25, 35));
331   // (5, 50, 25, 35)
332   canvas->drawRRect(rrect, second_paint);
333 
334   canvas->restore();
335 
336   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
337   canvas->translate(20, 20);
338   rrect.setRect(SkRect::MakeXYWH(0, 0, 100, 100));
339   // (50, 50, 50, 50)
340   canvas->drawRRect(rrect, third_paint);
341 
342   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
343   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
344 
345   EXPECT_EQ(3u, pixel_refs.size());
346   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40),
347                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
348   EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35),
349                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
350   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
351                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
352 }
353 
TEST(LazyPixelRefUtilsTest,DrawOval)354 TEST(LazyPixelRefUtilsTest, DrawOval) {
355   gfx::Rect layer_rect(0, 0, 256, 256);
356 
357   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
358   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
359 
360   TestLazyShader first_shader;
361   SkPaint first_paint;
362   first_paint.setShader(&first_shader);
363 
364   TestLazyShader second_shader;
365   SkPaint second_paint;
366   second_paint.setShader(&second_shader);
367 
368   TestLazyShader third_shader;
369   SkPaint third_paint;
370   third_paint.setShader(&third_shader);
371 
372   canvas->save();
373 
374   canvas->scale(2, 0.5);
375   // (20, 10, 60, 20).
376   canvas->drawOval(SkRect::MakeXYWH(10, 20, 30, 40), first_paint);
377 
378   canvas->restore();
379   canvas->save();
380 
381   canvas->translate(1, 2);
382   // (1, 35, 25, 35)
383   canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint);
384 
385   canvas->restore();
386 
387   canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50));
388   canvas->translate(20, 20);
389   // (50, 50, 50, 50)
390   canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint);
391 
392   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
393   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
394 
395   EXPECT_EQ(3u, pixel_refs.size());
396   EXPECT_FLOAT_RECT_EQ(gfx::RectF(20, 10, 60, 20),
397                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
398   EXPECT_FLOAT_RECT_EQ(gfx::RectF(1, 35, 25, 35),
399                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
400   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
401                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
402 }
403 
TEST(LazyPixelRefUtilsTest,DrawPath)404 TEST(LazyPixelRefUtilsTest, DrawPath) {
405   gfx::Rect layer_rect(0, 0, 256, 256);
406 
407   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
408   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
409 
410   TestLazyShader first_shader;
411   SkPaint first_paint;
412   first_paint.setShader(&first_shader);
413 
414   TestLazyShader second_shader;
415   SkPaint second_paint;
416   second_paint.setShader(&second_shader);
417 
418   SkPath path;
419   path.moveTo(12, 13);
420   path.lineTo(50, 50);
421   path.lineTo(22, 101);
422 
423   // (12, 13, 38, 88).
424   canvas->drawPath(path, first_paint);
425 
426   canvas->save();
427   canvas->clipRect(SkRect::MakeWH(50, 50));
428 
429   // (12, 13, 38, 37).
430   canvas->drawPath(path, second_paint);
431 
432   canvas->restore();
433 
434   StopRecording(picture.get(), canvas);
435 
436   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
437   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
438 
439   EXPECT_EQ(2u, pixel_refs.size());
440   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 88),
441                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
442   EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 37),
443                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
444 }
445 
TEST(LazyPixelRefUtilsTest,DrawBitmap)446 TEST(LazyPixelRefUtilsTest, DrawBitmap) {
447   gfx::Rect layer_rect(0, 0, 256, 256);
448 
449   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
450   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
451 
452   SkBitmap first;
453   CreateBitmap(gfx::Size(50, 50), "lazy", &first);
454   SkBitmap second;
455   CreateBitmap(gfx::Size(50, 50), "lazy", &second);
456   SkBitmap third;
457   CreateBitmap(gfx::Size(50, 50), "lazy", &third);
458   SkBitmap fourth;
459   CreateBitmap(gfx::Size(50, 1), "lazy", &fourth);
460   SkBitmap fifth;
461   CreateBitmap(gfx::Size(10, 10), "lazy", &fifth);
462 
463   canvas->save();
464 
465   // At (0, 0).
466   canvas->drawBitmap(first, 0, 0);
467   canvas->translate(25, 0);
468   // At (25, 0).
469   canvas->drawBitmap(second, 0, 0);
470   canvas->translate(0, 50);
471   // At (50, 50).
472   canvas->drawBitmap(third, 25, 0);
473 
474   canvas->restore();
475   canvas->save();
476 
477   canvas->translate(1, 0);
478   canvas->rotate(90);
479   // At (1, 0), rotated 90 degrees
480   canvas->drawBitmap(fourth, 0, 0);
481 
482   canvas->restore();
483 
484   canvas->scale(5, 6);
485   // At (0, 0), scaled by 5 and 6
486   canvas->drawBitmap(fifth, 0, 0);
487 
488   StopRecording(picture.get(), canvas);
489 
490   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
491   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
492 
493   EXPECT_EQ(5u, pixel_refs.size());
494   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
495                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
496   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
497                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
498   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50),
499                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
500   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 1, 50),
501                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
502   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 60),
503                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
504 
505 }
506 
TEST(LazyPixelRefUtilsTest,DrawBitmapRect)507 TEST(LazyPixelRefUtilsTest, DrawBitmapRect) {
508   gfx::Rect layer_rect(0, 0, 256, 256);
509 
510   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
511   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
512 
513   SkBitmap first;
514   CreateBitmap(gfx::Size(50, 50), "lazy", &first);
515   SkBitmap second;
516   CreateBitmap(gfx::Size(50, 50), "lazy", &second);
517   SkBitmap third;
518   CreateBitmap(gfx::Size(50, 50), "lazy", &third);
519 
520   TestLazyShader first_shader;
521   SkPaint first_paint;
522   first_paint.setShader(&first_shader);
523 
524   SkPaint non_lazy_paint;
525 
526   canvas->save();
527 
528   // (0, 0, 100, 100).
529   canvas->drawBitmapRect(first, SkRect::MakeWH(100, 100), &non_lazy_paint);
530   canvas->translate(25, 0);
531   // (75, 50, 10, 10).
532   canvas->drawBitmapRect(
533       second, SkRect::MakeXYWH(50, 50, 10, 10), &non_lazy_paint);
534   canvas->translate(5, 50);
535   // (0, 30, 100, 100). One from bitmap, one from paint.
536   canvas->drawBitmapRect(
537       third, SkRect::MakeXYWH(-30, -20, 100, 100), &first_paint);
538 
539   canvas->restore();
540 
541   StopRecording(picture.get(), canvas);
542 
543   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
544   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
545 
546   EXPECT_EQ(4u, pixel_refs.size());
547   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 100, 100),
548                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
549   EXPECT_FLOAT_RECT_EQ(gfx::RectF(75, 50, 10, 10),
550                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
551   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
552                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
553   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100),
554                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
555 }
556 
TEST(LazyPixelRefUtilsTest,DrawSprite)557 TEST(LazyPixelRefUtilsTest, DrawSprite) {
558   gfx::Rect layer_rect(0, 0, 256, 256);
559 
560   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
561   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
562 
563   SkBitmap first;
564   CreateBitmap(gfx::Size(50, 50), "lazy", &first);
565   SkBitmap second;
566   CreateBitmap(gfx::Size(50, 50), "lazy", &second);
567   SkBitmap third;
568   CreateBitmap(gfx::Size(50, 50), "lazy", &third);
569   SkBitmap fourth;
570   CreateBitmap(gfx::Size(50, 50), "lazy", &fourth);
571   SkBitmap fifth;
572   CreateBitmap(gfx::Size(50, 50), "lazy", &fifth);
573 
574   canvas->save();
575 
576   // Sprites aren't affected by the current matrix.
577 
578   // (0, 0, 50, 50).
579   canvas->drawSprite(first, 0, 0);
580   canvas->translate(25, 0);
581   // (10, 0, 50, 50).
582   canvas->drawSprite(second, 10, 0);
583   canvas->translate(0, 50);
584   // (25, 0, 50, 50).
585   canvas->drawSprite(third, 25, 0);
586 
587   canvas->restore();
588   canvas->save();
589 
590   canvas->rotate(90);
591   // (0, 0, 50, 50).
592   canvas->drawSprite(fourth, 0, 0);
593 
594   canvas->restore();
595 
596   TestLazyShader first_shader;
597   SkPaint first_paint;
598   first_paint.setShader(&first_shader);
599 
600   canvas->scale(5, 6);
601   // (100, 100, 50, 50).
602   canvas->drawSprite(fifth, 100, 100, &first_paint);
603 
604   StopRecording(picture.get(), canvas);
605 
606   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
607   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
608 
609   EXPECT_EQ(6u, pixel_refs.size());
610   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
611                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
612   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 0, 50, 50),
613                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
614   EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50),
615                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
616   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50),
617                        gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect));
618   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
619                        gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect));
620   EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50),
621                        gfx::SkRectToRectF(pixel_refs[5].pixel_ref_rect));
622 }
623 
TEST(LazyPixelRefUtilsTest,DrawText)624 TEST(LazyPixelRefUtilsTest, DrawText) {
625   gfx::Rect layer_rect(0, 0, 256, 256);
626 
627   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
628   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
629 
630   TestLazyShader first_shader;
631   SkPaint first_paint;
632   first_paint.setShader(&first_shader);
633 
634   SkPoint points[4];
635   points[0].set(10, 50);
636   points[1].set(20, 50);
637   points[2].set(30, 50);
638   points[3].set(40, 50);
639 
640   SkPath path;
641   path.moveTo(10, 50);
642   path.lineTo(20, 50);
643   path.lineTo(30, 50);
644   path.lineTo(40, 50);
645   path.lineTo(50, 50);
646 
647   canvas->drawText("text", 4, 50, 50, first_paint);
648   canvas->drawPosText("text", 4, points, first_paint);
649   canvas->drawTextOnPath("text", 4, path, NULL, first_paint);
650 
651   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
652   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
653 
654   EXPECT_EQ(3u, pixel_refs.size());
655 }
656 
TEST(LazyPixelRefUtilsTest,DrawVertices)657 TEST(LazyPixelRefUtilsTest, DrawVertices) {
658   gfx::Rect layer_rect(0, 0, 256, 256);
659 
660   skia::RefPtr<SkPicture> picture = skia::AdoptRef(new SkPicture);
661   SkCanvas* canvas = StartRecording(picture.get(), layer_rect);
662 
663   TestLazyShader first_shader;
664   SkPaint first_paint;
665   first_paint.setShader(&first_shader);
666 
667   TestLazyShader second_shader;
668   SkPaint second_paint;
669   second_paint.setShader(&second_shader);
670 
671   TestLazyShader third_shader;
672   SkPaint third_paint;
673   third_paint.setShader(&third_shader);
674 
675   SkPoint points[3];
676   SkColor colors[3];
677   uint16_t indecies[3] = {0, 1, 2};
678   points[0].set(10, 10);
679   points[1].set(100, 20);
680   points[2].set(50, 100);
681   // (10, 10, 90, 90).
682   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
683                        3,
684                        points,
685                        points,
686                        colors,
687                        NULL,
688                        indecies,
689                        3,
690                        first_paint);
691 
692   canvas->save();
693 
694   canvas->clipRect(SkRect::MakeWH(50, 50));
695   // (10, 10, 40, 40).
696   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
697                        3,
698                        points,
699                        points,
700                        colors,
701                        NULL,
702                        indecies,
703                        3,
704                        second_paint);
705 
706   canvas->restore();
707 
708   points[0].set(50, 55);
709   points[1].set(50, 55);
710   points[2].set(200, 200);
711   // (50, 55, 150, 145).
712   canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
713                        3,
714                        points,
715                        points,
716                        colors,
717                        NULL,
718                        indecies,
719                        3,
720                        third_paint);
721 
722   StopRecording(picture.get(), canvas);
723 
724   std::vector<skia::LazyPixelRefUtils::PositionLazyPixelRef> pixel_refs;
725   skia::LazyPixelRefUtils::GatherPixelRefs(picture.get(), &pixel_refs);
726 
727   EXPECT_EQ(3u, pixel_refs.size());
728   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90),
729                        gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect));
730   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40),
731                        gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect));
732   EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145),
733                        gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect));
734 }
735 
736 }  // namespace skia
737