// 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 UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_TOUCH_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_TOUCH_H_

#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/time/time.h"
#include "ui/events/pointer_details.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"

namespace gfx {
class PointF;
}  // namespace gfx

namespace wl {
enum class EventDispatchPolicy;
}

namespace ui {

class WaylandConnection;
class WaylandWindow;

class WaylandTouch {
 public:
  class Delegate;

  WaylandTouch(wl_touch* touch,
               WaylandConnection* connection,
               Delegate* delegate);

  WaylandTouch(const WaylandTouch&) = delete;
  WaylandTouch& operator=(const WaylandTouch&) = delete;

  ~WaylandTouch();

  uint32_t id() const { return obj_.id(); }

 private:
  // wl_touch_listener callbacks:
  static void OnTouchDown(void* data,
                          wl_touch* touch,
                          uint32_t serial,
                          uint32_t time,
                          struct wl_surface* surface,
                          int32_t id,
                          wl_fixed_t x,
                          wl_fixed_t y);
  static void OnTouchUp(void* data,
                        wl_touch* touch,
                        uint32_t serial,
                        uint32_t time,
                        int32_t id);
  static void OnTouchMotion(void* data,
                            wl_touch* touch,
                            uint32_t time,
                            int32_t id,
                            wl_fixed_t x,
                            wl_fixed_t y);
  static void OnTouchShape(void* data,
                           wl_touch* touch,
                           int32_t id,
                           wl_fixed_t major,
                           wl_fixed_t minor);
  static void OnTouchOrientation(void* data,
                                 wl_touch* touch,
                                 int32_t id,
                                 wl_fixed_t orientation);
  static void OnTouchCancel(void* data, wl_touch* touch);
  static void OnTouchFrame(void* data, wl_touch* touch);


  wl::Object<wl_touch> obj_;
  const raw_ptr<WaylandConnection> connection_;
  const raw_ptr<Delegate> delegate_;
};

class WaylandTouch::Delegate {
 public:
  virtual void OnTouchPressEvent(WaylandWindow* window,
                                 const gfx::PointF& location,
                                 base::TimeTicks timestamp,
                                 PointerId id,
                                 wl::EventDispatchPolicy dispatch_policy) = 0;
  virtual void OnTouchReleaseEvent(base::TimeTicks timestamp,
                                   PointerId id,
                                   wl::EventDispatchPolicy dispatch_policy,
                                   bool is_synthesized) = 0;
  virtual void OnTouchMotionEvent(const gfx::PointF& location,
                                  base::TimeTicks timestamp,
                                  PointerId id,
                                  wl::EventDispatchPolicy dispatch_policy,
                                  bool is_synthesized) = 0;
  virtual void OnTouchCancelEvent() = 0;
  virtual void OnTouchFrame() = 0;
  virtual void OnTouchFocusChanged(WaylandWindow* window) = 0;
  virtual std::vector<PointerId> GetActiveTouchPointIds() = 0;
  virtual const WaylandWindow* GetTouchTarget(PointerId id) const = 0;
};

}  // namespace ui

#endif  // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_TOUCH_H_