chromium/cc/input/compositor_input_interfaces.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_INPUT_COMPOSITOR_INPUT_INTERFACES_H_
#define CC_INPUT_COMPOSITOR_INPUT_INTERFACES_H_

#include <memory>

#include "base/time/time.h"
#include "base/types/optional_ref.h"
#include "cc/input/actively_scrolling_type.h"
#include "cc/input/browser_controls_offset_tags_info.h"
#include "cc/input/browser_controls_state.h"
#include "cc/paint/element_id.h"
#include "ui/gfx/geometry/size.h"

namespace viz {
struct BeginFrameArgs;
}

namespace gfx {
class Vector2dF;
}

namespace cc {

struct CompositorCommitData;
class LayerTreeHostImpl;
class LayerTreeSettings;
class MutatorHost;
class ScrollTree;
enum class ScrollbarOrientation;

// This is the interface that LayerTreeHostImpl and the "graphics" side of the
// compositor uses to talk to the compositor InputHandler. This interface is
// two-way; it's used used both to communicate state changes from the LayerTree
// to the input handler and also to query and update state in the input handler.
class InputDelegateForCompositor { … };

// This is the interface that's exposed by the LayerTreeHostImpl to the input
// handler.
class CompositorDelegateForInput { … };

}  // namespace cc

#endif  // CC_INPUT_COMPOSITOR_INPUT_INTERFACES_H_