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/painted_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(PaintedScrollbarLayerImplTest, Occlusion) { 14 gfx::Size layer_size(10, 1000); 15 gfx::Size viewport_size(1000, 1000); 16 17 LayerTestCommon::LayerImplTest impl; 18 19 SkBitmap thumb_sk_bitmap; 20 thumb_sk_bitmap.allocN32Pixels(10, 10); 21 thumb_sk_bitmap.setImmutable(); 22 UIResourceId thumb_uid = 5; 23 UIResourceBitmap thumb_bitmap(thumb_sk_bitmap); 24 impl.host_impl()->CreateUIResource(thumb_uid, thumb_bitmap); 25 26 SkBitmap track_sk_bitmap; 27 track_sk_bitmap.allocN32Pixels(10, 10); 28 track_sk_bitmap.setImmutable(); 29 UIResourceId track_uid = 6; 30 UIResourceBitmap track_bitmap(track_sk_bitmap); 31 impl.host_impl()->CreateUIResource(track_uid, track_bitmap); 32 33 ScrollbarOrientation orientation = VERTICAL; 34 35 PaintedScrollbarLayerImpl* scrollbar_layer_impl = 36 impl.AddChildToRoot<PaintedScrollbarLayerImpl>(orientation); 37 scrollbar_layer_impl->SetBounds(layer_size); 38 scrollbar_layer_impl->SetContentBounds(layer_size); 39 scrollbar_layer_impl->SetDrawsContent(true); 40 scrollbar_layer_impl->SetThumbThickness(layer_size.width()); 41 scrollbar_layer_impl->SetThumbLength(500); 42 scrollbar_layer_impl->SetTrackLength(layer_size.height()); 43 scrollbar_layer_impl->SetCurrentPos(100.f / 4); 44 scrollbar_layer_impl->SetMaximum(100); 45 scrollbar_layer_impl->SetVisibleToTotalLengthRatio(1.f / 2); 46 scrollbar_layer_impl->set_track_ui_resource_id(track_uid); 47 scrollbar_layer_impl->set_thumb_ui_resource_id(thumb_uid); 48 49 impl.CalcDrawProps(viewport_size); 50 51 gfx::Rect thumb_rect = scrollbar_layer_impl->ComputeThumbQuadRect(); 52 EXPECT_EQ(gfx::Rect(0, 500 / 4, 10, layer_size.height() / 2).ToString(), 53 thumb_rect.ToString()); 54 55 { 56 SCOPED_TRACE("No occlusion"); 57 gfx::Rect occluded; 58 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 59 60 size_t partially_occluded_count = 0; 61 LayerTestCommon::VerifyQuadsCoverRectWithOcclusion( 62 impl.quad_list(), 63 gfx::Rect(layer_size), 64 occluded, 65 &partially_occluded_count); 66 EXPECT_EQ(2u, impl.quad_list().size()); 67 EXPECT_EQ(0u, partially_occluded_count); 68 } 69 70 { 71 SCOPED_TRACE("Full occlusion"); 72 gfx::Rect occluded(scrollbar_layer_impl->visible_content_rect()); 73 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 74 75 LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect()); 76 EXPECT_EQ(impl.quad_list().size(), 0u); 77 } 78 79 { 80 SCOPED_TRACE("Partial occlusion"); 81 gfx::Rect occluded(0, 0, 5, 1000); 82 impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); 83 84 size_t partially_occluded_count = 0; 85 LayerTestCommon::VerifyQuadsCoverRectWithOcclusion( 86 impl.quad_list(), thumb_rect, occluded, &partially_occluded_count); 87 // The layer outputs two quads, which is partially occluded. 88 EXPECT_EQ(2u, impl.quad_list().size()); 89 EXPECT_EQ(2u, partially_occluded_count); 90 } 91 } 92 93 } // namespace 94 } // namespace cc 95
