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Diffstat (limited to 'chromium/skia/ext/pixel_ref_utils_unittest.cc')
| -rw-r--r-- | chromium/skia/ext/pixel_ref_utils_unittest.cc | 674 |
1 files changed, 674 insertions, 0 deletions
diff --git a/chromium/skia/ext/pixel_ref_utils_unittest.cc b/chromium/skia/ext/pixel_ref_utils_unittest.cc new file mode 100644 index 00000000000..1a0ff96ee06 --- /dev/null +++ b/chromium/skia/ext/pixel_ref_utils_unittest.cc @@ -0,0 +1,674 @@ +// Copyright 2014 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "base/compiler_specific.h" +#include "base/memory/scoped_ptr.h" +#include "cc/test/geometry_test_utils.h" +#include "skia/ext/pixel_ref_utils.h" +#include "skia/ext/refptr.h" +#include "testing/gtest/include/gtest/gtest.h" +#include "third_party/skia/include/core/SkBitmap.h" +#include "third_party/skia/include/core/SkCanvas.h" +#include "third_party/skia/include/core/SkFlattenableBuffers.h" +#include "third_party/skia/include/core/SkPictureRecorder.h" +#include "third_party/skia/include/core/SkPixelRef.h" +#include "third_party/skia/include/core/SkPoint.h" +#include "third_party/skia/include/core/SkShader.h" +#include "third_party/skia/src/core/SkOrderedReadBuffer.h" +#include "ui/gfx/rect.h" +#include "ui/gfx/skia_util.h" + +namespace skia { + +namespace { + +void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap); + +class TestDiscardableShader : public SkShader { + public: + TestDiscardableShader() { + CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_); + } + + TestDiscardableShader(SkFlattenableReadBuffer& flattenable_buffer) { + SkOrderedReadBuffer& buffer = + static_cast<SkOrderedReadBuffer&>(flattenable_buffer); + SkReader32* reader = buffer.getReader32(); + + reader->skip(-4); + uint32_t toSkip = reader->readU32(); + reader->skip(toSkip); + + CreateBitmap(gfx::Size(50, 50), "discardable", &bitmap_); + } + + virtual SkShader::BitmapType asABitmap(SkBitmap* bitmap, + SkMatrix* matrix, + TileMode xy[2]) const OVERRIDE { + if (bitmap) + *bitmap = bitmap_; + return SkShader::kDefault_BitmapType; + } + + // not indended to return an actual context. Just need to supply this. + virtual size_t contextSize() const OVERRIDE { + return sizeof(SkShader::Context); + } + + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(TestDiscardableShader); + + private: + SkBitmap bitmap_; +}; + +void CreateBitmap(gfx::Size size, const char* uri, SkBitmap* bitmap) { + const SkImageInfo info = { + size.width(), size.height(), kPMColor_SkColorType, kPremul_SkAlphaType + }; + + bitmap->allocPixels(info); + bitmap->pixelRef()->setImmutable(); + bitmap->pixelRef()->setURI(uri); +} + +SkCanvas* StartRecording(SkPictureRecorder* recorder, gfx::Rect layer_rect) { + SkCanvas* canvas = + recorder->beginRecording(layer_rect.width(), layer_rect.height()); + + canvas->save(); + canvas->translate(-layer_rect.x(), -layer_rect.y()); + canvas->clipRect(SkRect::MakeXYWH( + layer_rect.x(), layer_rect.y(), layer_rect.width(), layer_rect.height())); + + return canvas; +} + +SkPicture* StopRecording(SkPictureRecorder* recorder, SkCanvas* canvas) { + canvas->restore(); + return recorder->endRecording(); +} + +} // namespace + +TEST(PixelRefUtilsTest, DrawPaint) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + canvas->drawPaint(first_paint); + canvas->clipRect(SkRect::MakeXYWH(34, 45, 56, 67)); + canvas->drawPaint(second_paint); + // Total clip is now (34, 45, 56, 55) + canvas->clipRect(SkRect::MakeWH(100, 100)); + canvas->drawPaint(third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 256, 256), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 67), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(34, 45, 56, 55), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawPoints) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + SkPoint points[3]; + points[0].set(10, 10); + points[1].set(100, 20); + points[2].set(50, 100); + // (10, 10, 90, 90). + canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, first_paint); + + canvas->save(); + + canvas->clipRect(SkRect::MakeWH(50, 50)); + // (10, 10, 40, 40). + canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, second_paint); + + canvas->restore(); + + points[0].set(50, 55); + points[1].set(50, 55); + points[2].set(200, 200); + // (50, 55, 150, 145). + canvas->drawPoints(SkCanvas::kPolygon_PointMode, 3, points, third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawRect) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + // (10, 20, 30, 40). + canvas->drawRect(SkRect::MakeXYWH(10, 20, 30, 40), first_paint); + + canvas->save(); + + canvas->translate(5, 17); + // (5, 50, 25, 35) + canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint); + + canvas->restore(); + + canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50)); + canvas->translate(20, 20); + // (50, 50, 50, 50) + canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawRRect) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + SkRRect rrect; + rrect.setRect(SkRect::MakeXYWH(10, 20, 30, 40)); + + // (10, 20, 30, 40). + canvas->drawRRect(rrect, first_paint); + + canvas->save(); + + canvas->translate(5, 17); + rrect.setRect(SkRect::MakeXYWH(0, 33, 25, 35)); + // (5, 50, 25, 35) + canvas->drawRRect(rrect, second_paint); + + canvas->restore(); + + canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50)); + canvas->translate(20, 20); + rrect.setRect(SkRect::MakeXYWH(0, 0, 100, 100)); + // (50, 50, 50, 50) + canvas->drawRRect(rrect, third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 20, 30, 40), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(5, 50, 25, 35), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawOval) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + canvas->save(); + + canvas->scale(2, 0.5); + // (20, 10, 60, 20). + canvas->drawOval(SkRect::MakeXYWH(10, 20, 30, 40), first_paint); + + canvas->restore(); + canvas->save(); + + canvas->translate(1, 2); + // (1, 35, 25, 35) + canvas->drawRect(SkRect::MakeXYWH(0, 33, 25, 35), second_paint); + + canvas->restore(); + + canvas->clipRect(SkRect::MakeXYWH(50, 50, 50, 50)); + canvas->translate(20, 20); + // (50, 50, 50, 50) + canvas->drawRect(SkRect::MakeXYWH(0, 0, 100, 100), third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(20, 10, 60, 20), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(1, 35, 25, 35), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawPath) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + SkPath path; + path.moveTo(12, 13); + path.lineTo(50, 50); + path.lineTo(22, 101); + + // (12, 13, 38, 88). + canvas->drawPath(path, first_paint); + + canvas->save(); + canvas->clipRect(SkRect::MakeWH(50, 50)); + + // (12, 13, 38, 37). + canvas->drawPath(path, second_paint); + + canvas->restore(); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(2u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 88), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(12, 13, 38, 37), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawBitmap) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + SkBitmap first; + CreateBitmap(gfx::Size(50, 50), "discardable", &first); + SkBitmap second; + CreateBitmap(gfx::Size(50, 50), "discardable", &second); + SkBitmap third; + CreateBitmap(gfx::Size(50, 50), "discardable", &third); + SkBitmap fourth; + CreateBitmap(gfx::Size(50, 1), "discardable", &fourth); + SkBitmap fifth; + CreateBitmap(gfx::Size(10, 10), "discardable", &fifth); + + canvas->save(); + + // At (0, 0). + canvas->drawBitmap(first, 0, 0); + canvas->translate(25, 0); + // At (25, 0). + canvas->drawBitmap(second, 0, 0); + canvas->translate(0, 50); + // At (50, 50). + canvas->drawBitmap(third, 25, 0); + + canvas->restore(); + canvas->save(); + + canvas->translate(1, 0); + canvas->rotate(90); + // At (1, 0), rotated 90 degrees + canvas->drawBitmap(fourth, 0, 0); + + canvas->restore(); + + canvas->scale(5, 6); + // At (0, 0), scaled by 5 and 6 + canvas->drawBitmap(fifth, 0, 0); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(5u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 50, 50, 50), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 1, 50), + gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 60), + gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect)); + +} + +TEST(PixelRefUtilsTest, DrawBitmapRect) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + SkBitmap first; + CreateBitmap(gfx::Size(50, 50), "discardable", &first); + SkBitmap second; + CreateBitmap(gfx::Size(50, 50), "discardable", &second); + SkBitmap third; + CreateBitmap(gfx::Size(50, 50), "discardable", &third); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + SkPaint non_discardable_paint; + + canvas->save(); + + // (0, 0, 100, 100). + canvas->drawBitmapRect( + first, SkRect::MakeWH(100, 100), &non_discardable_paint); + canvas->translate(25, 0); + // (75, 50, 10, 10). + canvas->drawBitmapRect( + second, SkRect::MakeXYWH(50, 50, 10, 10), &non_discardable_paint); + canvas->translate(5, 50); + // (0, 30, 100, 100). One from bitmap, one from paint. + canvas->drawBitmapRect( + third, SkRect::MakeXYWH(-30, -20, 100, 100), &first_paint); + + canvas->restore(); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(4u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 100, 100), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(75, 50, 10, 10), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 30, 100, 100), + gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawSprite) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + SkBitmap first; + CreateBitmap(gfx::Size(50, 50), "discardable", &first); + SkBitmap second; + CreateBitmap(gfx::Size(50, 50), "discardable", &second); + SkBitmap third; + CreateBitmap(gfx::Size(50, 50), "discardable", &third); + SkBitmap fourth; + CreateBitmap(gfx::Size(50, 50), "discardable", &fourth); + SkBitmap fifth; + CreateBitmap(gfx::Size(50, 50), "discardable", &fifth); + + canvas->save(); + + // Sprites aren't affected by the current matrix. + + // (0, 0, 50, 50). + canvas->drawSprite(first, 0, 0); + canvas->translate(25, 0); + // (10, 0, 50, 50). + canvas->drawSprite(second, 10, 0); + canvas->translate(0, 50); + // (25, 0, 50, 50). + canvas->drawSprite(third, 25, 0); + + canvas->restore(); + canvas->save(); + + canvas->rotate(90); + // (0, 0, 50, 50). + canvas->drawSprite(fourth, 0, 0); + + canvas->restore(); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + canvas->scale(5, 6); + // (100, 100, 50, 50). + canvas->drawSprite(fifth, 100, 100, &first_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(6u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(25, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(0, 0, 50, 50), + gfx::SkRectToRectF(pixel_refs[3].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50), + gfx::SkRectToRectF(pixel_refs[4].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(100, 100, 50, 50), + gfx::SkRectToRectF(pixel_refs[5].pixel_ref_rect)); +} + +TEST(PixelRefUtilsTest, DrawText) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + SkPoint points[4]; + points[0].set(10, 50); + points[1].set(20, 50); + points[2].set(30, 50); + points[3].set(40, 50); + + SkPath path; + path.moveTo(10, 50); + path.lineTo(20, 50); + path.lineTo(30, 50); + path.lineTo(40, 50); + path.lineTo(50, 50); + + canvas->drawText("text", 4, 50, 50, first_paint); + canvas->drawPosText("text", 4, points, first_paint); + canvas->drawTextOnPath("text", 4, path, NULL, first_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); +} + +TEST(PixelRefUtilsTest, DrawVertices) { + gfx::Rect layer_rect(0, 0, 256, 256); + + SkPictureRecorder recorder; + SkCanvas* canvas = StartRecording(&recorder, layer_rect); + + TestDiscardableShader first_shader; + SkPaint first_paint; + first_paint.setShader(&first_shader); + + TestDiscardableShader second_shader; + SkPaint second_paint; + second_paint.setShader(&second_shader); + + TestDiscardableShader third_shader; + SkPaint third_paint; + third_paint.setShader(&third_shader); + + SkPoint points[3]; + SkColor colors[3]; + uint16_t indecies[3] = {0, 1, 2}; + points[0].set(10, 10); + points[1].set(100, 20); + points[2].set(50, 100); + // (10, 10, 90, 90). + canvas->drawVertices(SkCanvas::kTriangles_VertexMode, + 3, + points, + points, + colors, + NULL, + indecies, + 3, + first_paint); + + canvas->save(); + + canvas->clipRect(SkRect::MakeWH(50, 50)); + // (10, 10, 40, 40). + canvas->drawVertices(SkCanvas::kTriangles_VertexMode, + 3, + points, + points, + colors, + NULL, + indecies, + 3, + second_paint); + + canvas->restore(); + + points[0].set(50, 55); + points[1].set(50, 55); + points[2].set(200, 200); + // (50, 55, 150, 145). + canvas->drawVertices(SkCanvas::kTriangles_VertexMode, + 3, + points, + points, + colors, + NULL, + indecies, + 3, + third_paint); + + skia::RefPtr<SkPicture> picture = skia::AdoptRef(StopRecording(&recorder, canvas)); + + std::vector<skia::PixelRefUtils::PositionPixelRef> pixel_refs; + skia::PixelRefUtils::GatherDiscardablePixelRefs(picture.get(), &pixel_refs); + + EXPECT_EQ(3u, pixel_refs.size()); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 90, 90), + gfx::SkRectToRectF(pixel_refs[0].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(10, 10, 40, 40), + gfx::SkRectToRectF(pixel_refs[1].pixel_ref_rect)); + EXPECT_FLOAT_RECT_EQ(gfx::RectF(50, 55, 150, 145), + gfx::SkRectToRectF(pixel_refs[2].pixel_ref_rect)); +} + +} // namespace skia |