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/contents_scaling_layer.h"
6
7 #include <vector>
8
9 #include "cc/test/fake_layer_tree_host.h"
10 #include "cc/test/geometry_test_utils.h"
11 #include "testing/gtest/include/gtest/gtest.h"
12
13 namespace cc {
14 namespace {
15
16 class MockContentsScalingLayer : public ContentsScalingLayer {
17 public:
MockContentsScalingLayer()18 MockContentsScalingLayer()
19 : ContentsScalingLayer() {}
20
SetNeedsDisplayRect(const gfx::RectF & dirty_rect)21 virtual void SetNeedsDisplayRect(const gfx::RectF& dirty_rect) OVERRIDE {
22 last_needs_display_rect_ = dirty_rect;
23 ContentsScalingLayer::SetNeedsDisplayRect(dirty_rect);
24 }
25
LastNeedsDisplayRect() const26 const gfx::RectF& LastNeedsDisplayRect() const {
27 return last_needs_display_rect_;
28 }
29
30 private:
~MockContentsScalingLayer()31 virtual ~MockContentsScalingLayer() {}
32
33 gfx::RectF last_needs_display_rect_;
34 };
35
CalcDrawProps(FakeLayerTreeHost * host,float device_scale_factor)36 static void CalcDrawProps(FakeLayerTreeHost* host, float device_scale_factor) {
37 RenderSurfaceLayerList render_surface_layer_list;
38 LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
39 host->root_layer(), gfx::Size(500, 500), &render_surface_layer_list);
40 inputs.device_scale_factor = device_scale_factor;
41 LayerTreeHostCommon::CalculateDrawProperties(&inputs);
42 }
43
TEST(ContentsScalingLayerTest,CheckContentsBounds)44 TEST(ContentsScalingLayerTest, CheckContentsBounds) {
45 FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
46 scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create(&client);
47
48 scoped_refptr<MockContentsScalingLayer> test_layer =
49 make_scoped_refptr(new MockContentsScalingLayer());
50
51 scoped_refptr<Layer> root = Layer::Create();
52 root->AddChild(test_layer);
53 host->SetRootLayer(root);
54
55 test_layer->SetBounds(gfx::Size(320, 240));
56
57 CalcDrawProps(host.get(), 1.f);
58 EXPECT_FLOAT_EQ(1.f, test_layer->contents_scale_x());
59 EXPECT_FLOAT_EQ(1.f, test_layer->contents_scale_y());
60 EXPECT_EQ(320, test_layer->content_bounds().width());
61 EXPECT_EQ(240, test_layer->content_bounds().height());
62
63 CalcDrawProps(host.get(), 2.f);
64 EXPECT_EQ(640, test_layer->content_bounds().width());
65 EXPECT_EQ(480, test_layer->content_bounds().height());
66
67 test_layer->SetBounds(gfx::Size(10, 20));
68 CalcDrawProps(host.get(), 2.f);
69 EXPECT_EQ(20, test_layer->content_bounds().width());
70 EXPECT_EQ(40, test_layer->content_bounds().height());
71
72 CalcDrawProps(host.get(), 1.33f);
73 EXPECT_EQ(14, test_layer->content_bounds().width());
74 EXPECT_EQ(27, test_layer->content_bounds().height());
75 }
76
77 } // namespace
78 } // namespace cc
79