blob: 1df4e0af2f52d39fc214e7afc3d0a7606cab437f [file] [log] [blame]
// 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 <unordered_map>
#include "base/macros.h"
#include "cc/base/cc_export.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace gfx {
class ScrollOffset;
} // namespace gfx
namespace cc {
class CompositorProtoState;
class CC_EXPORT RemoteCompositorBridgeClient {
using ScrollOffsetMap = std::unordered_map<int, gfx::ScrollOffset>;
virtual ~RemoteCompositorBridgeClient() {}
// Called in response to a ScheduleMainFrame request made on the
// RemoteCompositorBridge.
// Note: The method should always be invoked asynchronously after the request
// is made.
virtual void BeginMainFrame() = 0;
// Provides an update from the mutations made on the client. Returns true if
// the update could be successfully applied to the engine state. This can
// fail, for instance, if the layer present in the update was destroyed on the
// engine.
virtual bool ApplyScrollAndScaleUpdateFromClient(
const ScrollOffsetMap& client_scroll_map,
float client_page_scale) = 0;
} // namespace cc