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 "cc/layers/solid_color_scrollbar_layer_impl.h" 6 7 #include "cc/test/layer_test_common.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 10 namespace cc { 11 namespace { 12 13 TEST(SolidColorScrollbarLayerImplTest, Occlusion) { 14 gfx::Size layer_size(10, 1000); 15 gfx::Size viewport_size(1000, 1000); 16 17 LayerTestCommon::LayerImplTest impl; 18 19 ScrollbarOrientation orientation = VERTICAL; 20 int thumb_thickness = layer_size.width(); 21 int track_start = 0; 22 bool is_left_side_vertical_scrollbar = false; 23 bool is_overlay = false; 24 25 SolidColorScrollbarLayerImpl* scrollbar_layer_impl = 26 impl.AddChildToRoot<SolidColorScrollbarLayerImpl>( 27 orientation, 28 thumb_thickness, 29 track_start, 30 is_left_side_vertical_scrollbar, 31 is_overlay); 32 scrollbar_layer_impl->SetBounds(layer_size); 33 scrollbar_layer_impl->SetContentBounds(layer_size); 34 scrollbar_layer_impl->SetDrawsContent(true); 35 scrollbar_layer_impl->SetCurrentPos(100.f / 4); 36 scrollbar_layer_impl->SetMaximum(100); 37 scrollbar_layer_impl->SetVisibleToTotalLengthRatio(1.f / 2); 38 // SolidColorScrollbarLayers construct with opacity = 0.f, so override. 39 scrollbar_layer_impl->SetOpacity(1.f); 40 41 impl.CalcDrawProps(viewport_size); 42 43 gfx::Rect thumb_rect = scrollbar_layer_impl->ComputeThumbQuadRect(); 44 EXPECT_EQ(gfx::Rect(0, 500 / 4, 10, layer_size.height() / 2).ToString(), 45 thumb_rect.ToString()); 46 47 { 48 SCOPED_TRACE("No occlusion"); 49 gfx::Rect occluded; 50 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 51 52 LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), thumb_rect); 53 EXPECT_EQ(1u, impl.quad_list().size()); 54 } 55 56 { 57 SCOPED_TRACE("Full occlusion"); 58 gfx::Rect occluded(scrollbar_layer_impl->visible_content_rect()); 59 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 60 61 LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect()); 62 EXPECT_EQ(impl.quad_list().size(), 0u); 63 } 64 65 { 66 SCOPED_TRACE("Partial occlusion"); 67 gfx::Rect occluded(0, 0, 5, 1000); 68 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 69 70 size_t partially_occluded_count = 0; 71 LayerTestCommon::VerifyQuadsCoverRectWithOcclusion( 72 impl.quad_list(), thumb_rect, occluded, &partially_occluded_count); 73 // The layer outputs one quad, which is partially occluded. 74 EXPECT_EQ(1u, impl.quad_list().size()); 75 EXPECT_EQ(1u, partially_occluded_count); 76 } 77 } 78 79 } // namespace 80 } // namespace cc 81
