| // 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/painted_scrollbar_layer_impl.h" |
| |
| #include <stddef.h> |
| |
| #include "cc/resources/ui_resource_bitmap.h" |
| #include "cc/test/layer_test_common.h" |
| #include "components/viz/common/quads/draw_quad.h" |
| #include "components/viz/common/quads/texture_draw_quad.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace cc { |
| namespace { |
| |
| TEST(PaintedScrollbarLayerImplTest, Occlusion) { |
| gfx::Size layer_size(10, 1000); |
| float scale = 2.f; |
| gfx::Size scaled_layer_size(20, 2000); |
| gfx::Size viewport_size(1000, 1000); |
| float thumb_opacity = 0.2f; |
| |
| LayerTestCommon::LayerImplTest impl; |
| |
| SkBitmap thumb_sk_bitmap; |
| thumb_sk_bitmap.allocN32Pixels(10, 10); |
| thumb_sk_bitmap.setImmutable(); |
| UIResourceId thumb_uid = 5; |
| UIResourceBitmap thumb_bitmap(thumb_sk_bitmap); |
| impl.host_impl()->CreateUIResource(thumb_uid, thumb_bitmap); |
| |
| SkBitmap track_sk_bitmap; |
| track_sk_bitmap.allocN32Pixels(10, 10); |
| track_sk_bitmap.setImmutable(); |
| UIResourceId track_uid = 6; |
| UIResourceBitmap track_bitmap(track_sk_bitmap); |
| impl.host_impl()->CreateUIResource(track_uid, track_bitmap); |
| |
| ScrollbarOrientation orientation = VERTICAL; |
| |
| PaintedScrollbarLayerImpl* scrollbar_layer_impl = |
| impl.AddChildToRoot<PaintedScrollbarLayerImpl>(orientation, false, false); |
| scrollbar_layer_impl->SetBounds(layer_size); |
| scrollbar_layer_impl->SetContentsOpaque(true); |
| scrollbar_layer_impl->set_internal_contents_scale_and_bounds( |
| scale, scaled_layer_size); |
| scrollbar_layer_impl->SetDrawsContent(true); |
| scrollbar_layer_impl->SetThumbThickness(layer_size.width()); |
| scrollbar_layer_impl->SetThumbLength(500); |
| scrollbar_layer_impl->SetTrackLength(layer_size.height()); |
| scrollbar_layer_impl->SetCurrentPos(100.f / 4); |
| scrollbar_layer_impl->SetClipLayerLength(100.f); |
| scrollbar_layer_impl->SetScrollLayerLength(200.f); |
| scrollbar_layer_impl->set_track_ui_resource_id(track_uid); |
| scrollbar_layer_impl->set_thumb_ui_resource_id(thumb_uid); |
| scrollbar_layer_impl->set_thumb_opacity(thumb_opacity); |
| |
| 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); |
| |
| size_t partially_occluded_count = 0; |
| LayerTestCommon::VerifyQuadsAreOccluded( |
| impl.quad_list(), occluded, &partially_occluded_count); |
| EXPECT_EQ(2u, impl.quad_list().size()); |
| EXPECT_EQ(0u, partially_occluded_count); |
| |
| // Note: this is also testing that the thumb and track are both |
| // scaled by the internal contents scale. It's not occlusion-related |
| // but is easy to verify here. |
| const viz::DrawQuad* thumb_draw_quad = impl.quad_list().ElementAt(0); |
| const viz::DrawQuad* track_draw_quad = impl.quad_list().ElementAt(1); |
| |
| EXPECT_EQ(viz::DrawQuad::TEXTURE_CONTENT, thumb_draw_quad->material); |
| EXPECT_EQ(viz::DrawQuad::TEXTURE_CONTENT, track_draw_quad->material); |
| |
| const viz::TextureDrawQuad* thumb_quad = |
| viz::TextureDrawQuad::MaterialCast(thumb_draw_quad); |
| const viz::TextureDrawQuad* track_quad = |
| viz::TextureDrawQuad::MaterialCast(track_draw_quad); |
| |
| gfx::Rect scaled_thumb_rect = gfx::ScaleToEnclosingRect(thumb_rect, scale); |
| EXPECT_EQ(track_quad->rect.ToString(), |
| gfx::Rect(scaled_layer_size).ToString()); |
| EXPECT_EQ(scrollbar_layer_impl->contents_opaque(), |
| track_quad->shared_quad_state->are_contents_opaque); |
| EXPECT_EQ(track_quad->visible_rect.ToString(), |
| gfx::Rect(scaled_layer_size).ToString()); |
| EXPECT_FALSE(track_quad->needs_blending); |
| EXPECT_EQ(thumb_quad->rect.ToString(), scaled_thumb_rect.ToString()); |
| EXPECT_EQ(thumb_quad->visible_rect.ToString(), |
| scaled_thumb_rect.ToString()); |
| EXPECT_TRUE(thumb_quad->needs_blending); |
| EXPECT_EQ(scrollbar_layer_impl->contents_opaque(), |
| thumb_quad->shared_quad_state->are_contents_opaque); |
| for (size_t i = 0; i < 4; ++i) { |
| EXPECT_EQ(thumb_opacity, thumb_quad->vertex_opacity[i]); |
| EXPECT_EQ(1.f, track_quad->vertex_opacity[i]); |
| } |
| } |
| |
| { |
| 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 two quads, which is partially occluded. |
| EXPECT_EQ(2u, impl.quad_list().size()); |
| EXPECT_EQ(2u, partially_occluded_count); |
| } |
| } |
| |
| } // namespace |
| } // namespace cc |