1 // Copyright 2012 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 "cc/layers/content_layer.h" 6 7 #include "cc/layers/content_layer_client.h" 8 #include "cc/resources/bitmap_content_layer_updater.h" 9 #include "cc/test/fake_rendering_stats_instrumentation.h" 10 #include "cc/test/geometry_test_utils.h" 11 #include "skia/ext/platform_canvas.h" 12 #include "testing/gtest/include/gtest/gtest.h" 13 #include "ui/gfx/rect_conversions.h" 14 15 namespace cc { 16 namespace { 17 18 class MockContentLayerClient : public ContentLayerClient { 19 public: 20 explicit MockContentLayerClient(const gfx::Rect& opaque_layer_rect) 21 : opaque_layer_rect_(opaque_layer_rect) {} 22 23 virtual void PaintContents( 24 SkCanvas* canvas, 25 const gfx::Rect& clip, 26 gfx::RectF* opaque, 27 ContentLayerClient::GraphicsContextStatus gc_status) OVERRIDE { 28 *opaque = gfx::RectF(opaque_layer_rect_); 29 } 30 virtual void DidChangeLayerCanUseLCDText() OVERRIDE {} 31 virtual bool FillsBoundsCompletely() const OVERRIDE { return false; } 32 33 private: 34 gfx::Rect opaque_layer_rect_; 35 }; 36 37 TEST(ContentLayerTest, ContentLayerPainterWithDeviceScale) { 38 float contents_scale = 2.f; 39 gfx::Rect content_rect(10, 10, 100, 100); 40 gfx::Rect opaque_rect_in_layer_space(5, 5, 20, 20); 41 gfx::Rect opaque_rect_in_content_space = gfx::ScaleToEnclosingRect( 42 opaque_rect_in_layer_space, contents_scale, contents_scale); 43 MockContentLayerClient client(opaque_rect_in_layer_space); 44 FakeRenderingStatsInstrumentation stats_instrumentation; 45 scoped_refptr<BitmapContentLayerUpdater> updater = 46 BitmapContentLayerUpdater::Create( 47 ContentLayerPainter::Create(&client).PassAs<LayerPainter>(), 48 &stats_instrumentation, 49 0); 50 51 gfx::Rect resulting_opaque_rect; 52 updater->PrepareToUpdate(content_rect, 53 gfx::Size(256, 256), 54 contents_scale, 55 contents_scale, 56 &resulting_opaque_rect); 57 58 EXPECT_EQ(opaque_rect_in_content_space.ToString(), 59 resulting_opaque_rect.ToString()); 60 } 61 62 } // namespace 63 } // namespace cc 64