| // 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 "cc/layers/solid_color_scrollbar_layer_impl.h" |
| |
| #include <stddef.h> |
| |
| #include "cc/test/layer_test_common.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace cc { |
| namespace { |
| |
| TEST(SolidColorScrollbarLayerImplTest, Occlusion) { |
| gfx::Size layer_size(10, 1000); |
| gfx::Size viewport_size(1000, 1000); |
| |
| LayerTestCommon::LayerImplTest impl; |
| |
| ScrollbarOrientation orientation = VERTICAL; |
| int thumb_thickness = layer_size.width(); |
| int track_start = 0; |
| bool is_left_side_vertical_scrollbar = false; |
| bool is_overlay = false; |
| |
| SolidColorScrollbarLayerImpl* scrollbar_layer_impl = |
| impl.AddChildToRoot<SolidColorScrollbarLayerImpl>( |
| orientation, |
| thumb_thickness, |
| track_start, |
| is_left_side_vertical_scrollbar, |
| is_overlay); |
| scrollbar_layer_impl->SetBounds(layer_size); |
| scrollbar_layer_impl->SetDrawsContent(true); |
| scrollbar_layer_impl->SetCurrentPos(25.f); |
| scrollbar_layer_impl->SetClipLayerLength(100.f); |
| scrollbar_layer_impl->SetScrollLayerLength(200.f); |
| // SolidColorScrollbarLayers construct with opacity = 0.f, so override. |
| scrollbar_layer_impl->test_properties()->opacity = 1.f; |
| |
| impl.CalcDrawProps(viewport_size); |
| |
| gfx::Rect thumb_rect = scrollbar_layer_impl->ComputeThumbQuadRect(); |
| EXPECT_EQ(gfx::Rect(0, 500 / 4, 10, layer_size.height() / 2).ToString(), |
| thumb_rect.ToString()); |
| |
| { |
| SCOPED_TRACE("No occlusion"); |
| gfx::Rect occluded; |
| impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); |
| |
| LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), thumb_rect); |
| EXPECT_EQ(1u, impl.quad_list().size()); |
| } |
| |
| { |
| SCOPED_TRACE("Full occlusion"); |
| gfx::Rect occluded(scrollbar_layer_impl->visible_layer_rect()); |
| impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); |
| |
| LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect()); |
| EXPECT_EQ(impl.quad_list().size(), 0u); |
| } |
| |
| { |
| SCOPED_TRACE("Partial occlusion"); |
| gfx::Rect occluded(0, 0, 5, 1000); |
| impl.AppendQuadsWithOcclusion(scrollbar_layer_impl, occluded); |
| |
| size_t partially_occluded_count = 0; |
| LayerTestCommon::VerifyQuadsAreOccluded( |
| impl.quad_list(), occluded, &partially_occluded_count); |
| // The layer outputs one quad, which is partially occluded. |
| EXPECT_EQ(1u, impl.quad_list().size()); |
| EXPECT_EQ(1u, partially_occluded_count); |
| } |
| } |
| |
| } // namespace |
| } // namespace cc |