chromium/third_party/blink/renderer/modules/csspaint/paint_worklet_proxy_client.h

// Copyright 2018 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_MODULES_CSSPAINT_PAINT_WORKLET_PROXY_CLIENT_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_CSSPAINT_PAINT_WORKLET_PROXY_CLIENT_H_

#include "base/gtest_prod_util.h"
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/renderer/core/css/cssom/paint_worklet_input.h"
#include "third_party/blink/renderer/core/workers/worker_clients.h"
#include "third_party/blink/renderer/modules/csspaint/paint_worklet_global_scope.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/graphics/paint_worklet_paint_dispatcher.h"
#include "third_party/blink/renderer/platform/graphics/paint_worklet_painter.h"
#include "third_party/blink/renderer/platform/graphics/platform_paint_worklet_layer_painter.h"
#include "third_party/blink/renderer/platform/heap/cross_thread_handle.h"

namespace blink {

class DocumentPaintDefinition;
class NativePaintDefinition;
class PaintWorklet;
class WorkletGlobalScope;
class WorkerBackingThread;

// Mediates between the (multiple) PaintWorkletGlobalScopes on the worklet
// thread and the (single) PaintWorkletPaintDispatcher on the non-worklet
// threads. PaintWorkletProxyClient is responsible both for informing the
// dispatcher about its existence once all global scopes are registered, as well
// as choosing the global scope to use for any given paint request.
//
// This class is constructed on the main thread but it is used in the worklet
// backing thread. The entire class is used for off-thread CSS Paint.
class MODULES_EXPORT PaintWorkletProxyClient
    : public GarbageCollected<PaintWorkletProxyClient>,
      public Supplement<WorkerClients>,
      public PaintWorkletPainter { … };

void MODULES_EXPORT ProvidePaintWorkletProxyClientTo(WorkerClients*,
                                                     PaintWorkletProxyClient*);

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_CSSPAINT_PAINT_WORKLET_PROXY_CLIENT_H_