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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_COMPOSITING_LAYERS_AS_JSON_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_COMPOSITING_LAYERS_AS_JSON_H_
#include <memory>
#include "base/memory/stack_allocated.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/platform_export.h"
namespace cc {
class Layer;
}
namespace blink {
class ContentLayerClientImpl;
class JSONArray;
class JSONObject;
class TransformPaintPropertyNode;
// These values need to be kept consistent with the layer tree flags in
// core/testing/Internals.idl.
enum {
kLayerTreeNormal = 0,
// Dump extra debugging info like layer addresses.
kLayerTreeIncludesDebugInfo = 1 << 0,
kLayerTreeIncludesInvalidations = 1 << 1,
kLayerTreeIncludesDetailedInvalidations = 1 << 2,
kLayerTreeIncludesPaintingPhases = 1 << 3,
kLayerTreeIncludesAllLayers = 1 << 4,
kLayerTreeIncludesCompositingReasons = 1 << 5,
kLayerTreeIncludesPaintRecords = 1 << 6,
// Outputs all layers as a layer tree. The default is output children
// (excluding the root) as a layer list, in paint (preorder) order.
kOutputAsLayerTree = 0x4000,
};
typedef unsigned LayerTreeFlags;
class PLATFORM_EXPORT LayersAsJSON {
STACK_ALLOCATED();
public:
LayersAsJSON(LayerTreeFlags);
void AddLayer(const cc::Layer& layer,
const TransformPaintPropertyNode& transform,
const ContentLayerClientImpl* content_layer_client);
std::unique_ptr<JSONObject> Finalize();
private:
int AddTransformJSON(const TransformPaintPropertyNode&);
LayerTreeFlags flags_;
int next_transform_id_;
std::unique_ptr<JSONArray> layers_json_;
HeapHashMap<Member<const TransformPaintPropertyNode>, int> transform_id_map_;
std::unique_ptr<JSONArray> transforms_json_;
HashMap<int, int> rendering_context_map_;
};
PLATFORM_EXPORT std::unique_ptr<JSONObject> CCLayerAsJSON(
const cc::Layer& layer,
LayerTreeFlags flags);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_COMPOSITING_LAYERS_AS_JSON_H_
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