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// Copyright 2018 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 "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/paint/compositing/composited_layer_mapping.h"
#include "third_party/blink/renderer/core/paint/paint_layer.h"
#include "third_party/blink/renderer/core/testing/core_unit_test_helper.h"
#include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
namespace blink {
class CompositedLayerAssignerTest : public RenderingTest {
private:
void SetUp() override {
RenderingTest::SetUp();
EnableCompositing();
}
};
TEST_F(CompositedLayerAssignerTest, SquashingSimple) {
SetBodyInnerHTML(R"HTML(
<div>
<div style="width: 20px; height: 20px; will-change: transform"></div>
</div>
<div id="squashed" style="position: absolute; top: 0; width: 100px;
height: 100px; background: green"></div>
)HTML");
PaintLayer* squashed =
ToLayoutBoxModelObject(GetLayoutObjectByElementId("squashed"))->Layer();
EXPECT_EQ(kPaintsIntoGroupedBacking, squashed->GetCompositingState());
}
TEST_F(CompositedLayerAssignerTest, SquashingAcrossClipPathDisallowed) {
SetBodyInnerHTML(R"HTML(
<div style="clip-path: circle(100%)">
<div style="width: 20px; height: 20px; will-change: transform"></div>
</div>
<div id="squashed" style="position: absolute; top: 0; width: 100px;
height: 100px; background: green"></div>
)HTML");
// #squashed should not be squashed after all, because of the clip path above
// #squashing.
PaintLayer* squashed =
ToLayoutBoxModelObject(GetLayoutObjectByElementId("squashed"))->Layer();
EXPECT_EQ(kPaintsIntoOwnBacking, squashed->GetCompositingState());
}
TEST_F(CompositedLayerAssignerTest, SquashingAcrossMaskDisallowed) {
SetBodyInnerHTML(R"HTML(
<div style="-webkit-mask-image: linear-gradient(black, white);">
<div style="width: 20px; height: 20px; will-change: transform"></div>
</div>
<div id="squashed" style="position: absolute; top: 0; width: 100px;
height: 100px; background: green"></div>
)HTML");
// #squashed should not be squashed after all, because of the mask above
// #squashing.
PaintLayer* squashed =
ToLayoutBoxModelObject(GetLayoutObjectByElementId("squashed"))->Layer();
EXPECT_EQ(kPaintsIntoOwnBacking, squashed->GetCompositingState());
}
} // namespace blink
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