compositor-worker: Remove code from cc_blink

third_party/WebKit/Source/platform/graphics/CompositorMutableStateTest.cpp

+// Copyright 2016 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 "platform/graphics/CompositorMutableState.h"
+
+#include "base/message_loop/message_loop.h"
+#include "cc/test/fake_impl_task_runner_provider.h"
+#include "cc/test/fake_layer_tree_host_impl.h"
+#include "cc/test/fake_output_surface.h"
+#include "cc/test/test_shared_bitmap_manager.h"
+#include "cc/test/test_task_graph_runner.h"
+#include "cc/trees/layer_tree_host_impl.h"
+#include "cc/trees/layer_tree_impl.h"
+#include "platform/graphics/CompositorMutableProperties.h"
+#include "platform/graphics/CompositorMutableStateProvider.h"
+#include "platform/graphics/CompositorMutation.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "wtf/OwnPtr.h"
+
+namespace blink {
+
+using cc::FakeImplTaskRunnerProvider;
+using cc::FakeLayerTreeHostImpl;
+using cc::FakeOutputSurface;
+using cc::LayerImpl;
+using cc::LayerTreeSettings;
+using cc::OutputSurface;
+using cc::TestTaskGraphRunner;
+using cc::TestSharedBitmapManager;
+
+class CompositorMutableStateTest : public testing::Test {
+public:
+    CompositorMutableStateTest()
+        : m_outputSurface(FakeOutputSurface::Create3d())
+    {
+        LayerTreeSettings settings;
+        settings.layer_transforms_should_scale_layer_contents = true;
+        settings.verify_property_trees = true;
+        m_hostImpl.reset(new FakeLayerTreeHostImpl(settings, &m_taskRunnerProvider, &m_sharedBitmapManager, &m_taskGraphRunner));
+        m_hostImpl->SetVisible(true);
+        EXPECT_TRUE(m_hostImpl->InitializeRenderer(m_outputSurface.get()));
+    }
+
+    void SetLayerPropertiesForTesting(LayerImpl* layer)
+    {
+        layer->SetTransform(gfx::Transform());
+        layer->SetTransformOrigin(gfx::Point3F());
+        layer->SetPosition(gfx::PointF());
+        layer->SetBounds(gfx::Size(100, 100));
+        layer->SetShouldFlattenTransform(true);
+        layer->Set3dSortingContextId(0);
+        layer->SetForceRenderSurface(true);
+        layer->SetDrawsContent(true);
+    }
+
+    FakeLayerTreeHostImpl& hostImpl() { return *m_hostImpl; }
+
+    LayerImpl* rootLayer() { return m_hostImpl->active_tree()->root_layer(); }
+
+private:
+    // The cc testing machinery has fairly deep dependency on having a main
+    // message loop (one example is the task runner provider). We construct one
+    // here so that it's installed in TLA and can be found by other cc classes.
+    base::MessageLoop m_messageLoop;
+    TestSharedBitmapManager m_sharedBitmapManager;
+    TestTaskGraphRunner m_taskGraphRunner;
+    FakeImplTaskRunnerProvider m_taskRunnerProvider;
+    scoped_ptr<OutputSurface> m_outputSurface;
+    scoped_ptr<FakeLayerTreeHostImpl> m_hostImpl;
+};
+
+TEST_F(CompositorMutableStateTest, NoMutableState)
+{
+    // In this test, there are no layers with either an element id or mutable
+    // properties. We should not be able to get any mutable state.
+    scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl().active_tree(), 42);
+    SetLayerPropertiesForTesting(root.get());
+
+    hostImpl().SetViewportSize(root->bounds());
+    hostImpl().active_tree()->SetRootLayer(std::move(root));
+    hostImpl().UpdateNumChildrenAndDrawPropertiesForActiveTree();
+
+    CompositorMutations mutations;
+    CompositorMutableStateProvider provider(hostImpl().active_tree(), &mutations);
+    OwnPtr<CompositorMutableState> state(provider.getMutableStateFor(42));
+    EXPECT_FALSE(state);
+}
+
+TEST_F(CompositorMutableStateTest, MutableStateNoMutableProperties)
+{
+    // In this test, there is a layer with an element id, but no mutable
+    // properties. This should behave just as if we'd had no element id.
+    scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl().active_tree(), 42);
+    SetLayerPropertiesForTesting(root.get());
+    root->SetElementId(42);
+
+    hostImpl().SetViewportSize(root->bounds());
+    hostImpl().active_tree()->SetRootLayer(std::move(root));
+    hostImpl().UpdateNumChildrenAndDrawPropertiesForActiveTree();
+
+    CompositorMutations mutations;
+    CompositorMutableStateProvider provider(hostImpl().active_tree(), &mutations);
+    OwnPtr<CompositorMutableState> state(provider.getMutableStateFor(42));
+    EXPECT_FALSE(state);
+}
+
+TEST_F(CompositorMutableStateTest, MutableStateMutableProperties)
+{
+    // In this test, there is a layer with an element id and mutable properties.
+    // In this case, we should get a valid mutable state for this element id that
+    // has a real effect on the corresponding layer.
+    scoped_ptr<LayerImpl> root = LayerImpl::Create(hostImpl().active_tree(), 42);
+    SetLayerPropertiesForTesting(root.get());
+    root->SetElementId(42);
+    root->SetMutableProperties(CompositorMutableProperty::kOpacity | CompositorMutableProperty::kTransform | CompositorMutableProperty::kScrollLeft | CompositorMutableProperty::kScrollTop);
+
+    hostImpl().SetViewportSize(root->bounds());
+    hostImpl().active_tree()->SetRootLayer(std::move(root));
+    hostImpl().UpdateNumChildrenAndDrawPropertiesForActiveTree();
+
+    CompositorMutations mutations;
+    CompositorMutableStateProvider provider(hostImpl().active_tree(), &mutations);
+
+    OwnPtr<CompositorMutableState> state(provider.getMutableStateFor(42));
+    EXPECT_TRUE(state.get());
+
+    EXPECT_EQ(1.0, rootLayer()->opacity());
+    EXPECT_EQ(gfx::Transform().ToString(), rootLayer()->transform().ToString());
+    EXPECT_EQ(0.0, rootLayer()->CurrentScrollOffset().x());
+    EXPECT_EQ(0.0, rootLayer()->CurrentScrollOffset().y());
+
+    gfx::Transform zero(0, 0, 0, 0, 0, 0);
+    state->setOpacity(0.5);
+    state->setTransform(zero.matrix());
+    state->setScrollLeft(1.0);
+    state->setScrollTop(1.0);
+
+    EXPECT_EQ(0.5, rootLayer()->opacity());
+    EXPECT_EQ(zero.ToString(), rootLayer()->transform().ToString());
+    EXPECT_EQ(1.0, rootLayer()->CurrentScrollOffset().x());
+    EXPECT_EQ(1.0, rootLayer()->CurrentScrollOffset().y());
+
+    // The corresponding mutation should reflect the changed values.
+    EXPECT_EQ(1ul, mutations.map.size());
+
+    const CompositorMutation& mutation = *mutations.map.find(42)->value;
+    EXPECT_TRUE(mutation.isOpacityMutated());
+    EXPECT_TRUE(mutation.isTransformMutated());
+    EXPECT_TRUE(mutation.isScrollLeftMutated());
+    EXPECT_TRUE(mutation.isScrollTopMutated());
+
+    EXPECT_EQ(0.5, mutation.opacity());
+    EXPECT_EQ(zero.ToString(), gfx::Transform(mutation.transform()).ToString());
+    EXPECT_EQ(1.0, mutation.scrollLeft());
+    EXPECT_EQ(1.0, mutation.scrollTop());
+}
+
+} // namespace blink