components/exo/wayland/wayland_pointer_delegate.h

// Copyright 2018 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.

#ifndef COMPONENTS_EXO_WAYLAND_WAYLAND_POINTER_DELEGATE_H_
#define COMPONENTS_EXO_WAYLAND_WAYLAND_POINTER_DELEGATE_H_

#include "components/exo/pointer_delegate.h"
#include "components/exo/wayland/wayland_input_delegate.h"

struct wl_client;
struct wl_resource;

namespace exo {
namespace wayland {

// Pointer delegate class that accepts events for surfaces owned by the same
// client as a pointer resource.
class WaylandPointerDelegate : public WaylandInputDelegate,
                               public PointerDelegate {
 public:
  explicit WaylandPointerDelegate(wl_resource* pointer_resource);

  // Overridden from PointerDelegate:
  void OnPointerDestroying(Pointer* pointer) override;
  bool CanAcceptPointerEventsForSurface(Surface* surface) const override;
  void OnPointerEnter(Surface* surface,
                      const gfx::PointF& location,
                      int button_flags) override;
  void OnPointerLeave(Surface* surface) override;
  void OnPointerMotion(base::TimeTicks time_stamp,
                       const gfx::PointF& location) override;
  void OnPointerButton(base::TimeTicks time_stamp,
                       int button_flags,
                       bool pressed) override;
  void OnPointerScroll(base::TimeTicks time_stamp,
                       const gfx::Vector2dF& offset,
                       bool discrete) override;
  void OnPointerScrollStop(base::TimeTicks time_stamp) override;
  void OnPointerFrame() override;

 private:
  // The client who own this pointer instance.
  wl_client* client() const;

  // Returns the next serial to use for pointer events.
  uint32_t next_serial() const;

  // The pointer resource associated with the pointer.
  wl_resource* const pointer_resource_;

  DISALLOW_COPY_AND_ASSIGN(WaylandPointerDelegate);
};

}  // namespace wayland
}  // namespace exo

#endif  // COMPONENTS_EXO_WAYLAND_WAYLAND_POINTER_DELEGATE_H_