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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_SERVICE_LAYERS_LAYER_CONTEXT_IMPL_BASE_UNITTEST_H_
#define COMPONENTS_VIZ_SERVICE_LAYERS_LAYER_CONTEXT_IMPL_BASE_UNITTEST_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "cc/trees/layer_tree_impl.h"
#include "components/viz/service/frame_sinks/compositor_frame_sink_support.h"
#include "components/viz/service/frame_sinks/frame_sink_manager_impl.h"
#include "components/viz/test/fake_compositor_frame_sink_client.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "services/viz/public/mojom/compositing/layer_context.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace viz {
class LayerContextImplTest : public testing::Test {
public:
// Default layer tree property values
static constexpr float kDefaultPageScaleFactor = 1.0f;
static constexpr float kDefaultMinPageScaleFactor = 0.5f;
static constexpr float kDefaultMaxPageScaleFactor = 2.0f;
static const gfx::Rect kDefaultDeviceViewportRect;
static const SkColor4f kDefaultBackgroundColor;
static constexpr float kDefaultExternalPageScaleFactor = 1.0f;
static constexpr float kDefaultDeviceScaleFactor = 1.0f;
static constexpr float kDefaultPaintedDeviceScaleFactor = 1.0f;
static const FrameSinkId kDefaultFrameSinkId;
static const LocalSurfaceId kDefaultLocalSurfaceId;
static const SurfaceId kDefaultSurfaceId;
static const SurfaceRange kDefaultSurfaceRange;
// Default Layer property values
static const gfx::Size kDefaultLayerBounds;
// Default TextureLayer property values
static constexpr bool kDefaultBlendBackgroundColor = false;
static constexpr bool kDefaultForceTextureToOpaque = false;
static const gfx::PointF kDefaultUVTopLeft;
static const gfx::PointF kDefaultUVBottomRight;
// Default SurfaceLayer property values
static constexpr uint32_t kDefaultDeadlineInFrames = 0u;
static constexpr bool kDefaultStretchContentToFillBounds = false;
static constexpr bool kDefaultSurfaceHitTestable = false;
static constexpr bool kDefaultHasPointerEventsNone = false;
static constexpr bool kDefaultIsReflection = false;
static constexpr bool kDefaultWillDrawNeedsReset = false;
static constexpr bool kDefaultOverrideChildPaintFlags = false;
// Default ScrollbarLayerBaseExtra property values
static const cc::ElementId kDefaultScrollElementId;
static constexpr bool kDefaultIsOverlayScrollbar = false;
static constexpr bool kDefaultIsWebTest = false;
static constexpr float kDefaultThumbThicknessScaleFactor = 0.f;
static constexpr float kDefaultCurrentPos = 0.f;
static constexpr float kDefaultClipLayerLength = 0.f;
static constexpr float kDefaultScrollLayerLength = 0.f;
static constexpr float kDefaultVerticalAdjust = 0.f;
static constexpr bool kDefaultHasFindInPageTickmarks = false;
static constexpr bool kDefaultIsHorizontalOrientation = false;
static constexpr bool kDefaultIsLeftSideVerticalScrollbar = false;
// Default SolidColorScrollbarLayer property values
static const SkColor4f kDefaultSolidColorScrollbarColor;
static constexpr int kDefaultSolidColorScrollbarThumbThickness = 0;
static constexpr int kDefaultSolidColorScrollbarTrackStart = 0;
// Default NinePatchThumbScrollbarLayer property values
static constexpr int kDefaultNinePatchThumbScrollbarThumbThickness = 0;
static constexpr int kDefaultNinePatchThumbScrollbarThumbLength = 0;
static constexpr int kDefaultNinePatchThumbScrollbarTrackStart = 0;
static constexpr int kDefaultNinePatchThumbScrollbarTrackLength = 0;
static const gfx::Size kDefaultNinePatchThumbScrollbarImageBounds;
static const gfx::Rect kDefaultNinePatchThumbScrollbarAperture;
static const cc::UIResourceId
kDefaultNinePatchThumbScrollbarThumbUIResourceId;
static const cc::UIResourceId
kDefaultNinePatchThumbScrollbarTrackAndButtonsUIResourceId;
// Default PaintedScrollbarLayer property values
static constexpr float kDefaultPaintedScrollbarInternalContentsScale = 0.f;
static const gfx::Size kDefaultPaintedScrollbarInternalContentBounds;
static constexpr bool kDefaultPaintedScrollbarJumpOnTrackClick = false;
static constexpr bool kDefaultPaintedScrollbarSupportsDragSnapBack = false;
static constexpr int kDefaultPaintedScrollbarThumbThickness = 0;
static constexpr int kDefaultPaintedScrollbarThumbLength = 0;
static const gfx::Rect kDefaultPaintedScrollbarBackButtonRect;
static const gfx::Rect kDefaultPaintedScrollbarForwardButtonRect;
static const gfx::Rect kDefaultPaintedScrollbarTrackRect;
static constexpr cc::UIResourceId
kDefaultPaintedScrollbarTrackAndButtonsUIResourceId = 0;
static constexpr cc::UIResourceId kDefaultPaintedScrollbarThumbUIResourceId =
0;
static constexpr bool kDefaultPaintedScrollbarUsesNinePatchTrackAndButtons =
false;
static constexpr float kDefaultPaintedScrollbarPaintedOpacity = 1.f;
static const std::optional<SkColor4f> kDefaultPaintedScrollbarThumbColor;
static const gfx::Size kDefaultPaintedScrollbarTrackAndButtonsImageBounds;
static const gfx::Rect kDefaultPaintedScrollbarTrackAndButtonsAperture;
// Default MirrorLayer property values
static constexpr int kDefaultMirrorLayerMirroredLayerId = 0;
// Default ViewTransitionContentLayer property values
static const ViewTransitionElementResourceId
kDefaultViewTransitionContentLayerResourceId;
static constexpr bool kDefaultViewTransitionContentLayerIsLiveContentLayer =
false;
static const gfx::RectF kDefaultViewTransitionContentLayerMaxExtentsRect;
// Default TileDisplayLayer property values
static const std::optional<SkColor4f> kDefaultTileDisplaySolidColor;
static constexpr bool kDefaultTileDisplayIsBackdropFilterMask = false;
// Default UIResourceLayer property values
static constexpr cc::UIResourceId kDefaultUIResourceId = 12;
static const gfx::Size kDefaultUIResourceImageBounds;
static const gfx::PointF kDefaultUIResourceUVTopLeft;
static const gfx::PointF kDefaultUIResourceUVBottomRight;
// Default NinePatchLayer property values
static constexpr cc::UIResourceId kDefaultNinePatchUIResourceId = 23;
static const gfx::Size kDefaultNinePatchImageBounds;
static const gfx::PointF kDefaultNinePatchUVTopLeft;
static const gfx::PointF kDefaultNinePatchUVBottomRight;
static const gfx::Rect kDefaultNinePatchAperture;
static const gfx::Rect kDefaultNinePatchBorder;
static const gfx::Rect kDefaultNinePatchLayerOcclusion;
static constexpr bool kDefaultNinePatchFillCenter = true;
LayerContextImplTest();
~LayerContextImplTest() override;
void SetUp() override;
void ResetTestState();
mojom::LayerTreeUpdatePtr CreateDefaultUpdate();
void AddDefaultPropertyUpdates(mojom::LayerTreeUpdate* update);
void AddFirstTimeDefaultProperties(mojom::LayerTreeUpdate* update);
int AddTransformNode(mojom::LayerTreeUpdate* update, int parent);
int AddClipNode(mojom::LayerTreeUpdate* update, int parent);
int AddEffectNode(mojom::LayerTreeUpdate* update, int parent);
int AddScrollNode(mojom::LayerTreeUpdate* update, int parent);
mojom::ScrollbarLayerBaseExtraPtr CreateDefaultScrollbarBaseExtra();
mojom::LayerExtraPtr CreateDefaultLayerExtra(cc::mojom::LayerType type);
// Helper to add a default layer to the update.
// Returns the ID of the added layer.
int AddDefaultLayerToUpdate(
mojom::LayerTreeUpdate* update,
cc::mojom::LayerType type = cc::mojom::LayerType::kLayer,
int id = -1);
// Helper to manually add a layer to an update, bypassing AddDefaultLayer.
// This is useful for testing specific ID scenarios or invalid properties.
mojom::LayerPtr CreateManualLayer(
int id,
cc::mojom::LayerType type = cc::mojom::LayerType::kLayer,
const gfx::Size& bounds = kDefaultLayerBounds,
int transform_idx = cc::kSecondaryRootPropertyNodeId,
int clip_idx = cc::kRootPropertyNodeId,
int effect_idx = cc::kSecondaryRootPropertyNodeId,
int scroll_idx = cc::kSecondaryRootPropertyNodeId);
void RemoveLayerInUpdate(mojom::LayerTreeUpdate* update, int id);
TransferableResource MakeFakeResource(gfx::Size size);
mojom::TransferableUIResourceRequestPtr CreateUIResourceRequest(
int uid,
mojom::TransferableUIResourceRequest::Type type);
protected:
cc::LayerImpl* GetLayerFromActiveTree(int layer_id);
void RecreateLayerContextImplWithParams(bool draw_mode_is_gpu);
FakeCompositorFrameSinkClient dummy_client_;
FrameSinkManagerImpl frame_sink_manager_;
std::unique_ptr<CompositorFrameSinkSupport> compositor_frame_sink_support_;
std::unique_ptr<LayerContextImpl> layer_context_impl_;
bool first_update_ = true;
// Layer IDs start at 1, as 0 is reserved for cc::kInvalidLayerId.
int next_layer_id_ = 1;
// Property tree IDs start at 0.
int next_transform_id_ = 0;
int next_clip_id_ = 0;
int next_effect_id_ = 0;
int next_scroll_id_ = 0;
cc::ViewportPropertyIds viewport_property_ids;
std::vector<int> layer_order_;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_LAYERS_LAYER_CONTEXT_IMPL_BASE_UNITTEST_H_
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