fl_pointer_manager.h File Reference

#include "flutter/shell/platform/embedder/embedder.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h"

Go to the source code of this file.

Functions
G_BEGIN_DECLS	G_DECLARE_FINAL_TYPE (FlPointerManager, fl_pointer_manager, FL, POINTER_MANAGER, GObject)
FlPointerManager *	fl_pointer_manager_new (FlutterViewId view_id, FlEngine *engine)
gboolean	fl_pointer_manager_handle_button_press (FlPointerManager *manager, guint event_time, FlutterPointerDeviceKind device_kind, gdouble x, gdouble y, guint gdk_button)
gboolean	fl_pointer_manager_handle_button_release (FlPointerManager *manager, guint event_time, FlutterPointerDeviceKind device_kind, gdouble x, gdouble y, guint gdk_button)
gboolean	fl_pointer_manager_handle_motion (FlPointerManager *manager, guint event_time, FlutterPointerDeviceKind device_kind, gdouble x, gdouble y)
gboolean	fl_pointer_manager_handle_enter (FlPointerManager *manager, guint event_time, FlutterPointerDeviceKind device_kind, gdouble x, gdouble y)
gboolean	fl_pointer_manager_handle_leave (FlPointerManager *manager, guint event_time, FlutterPointerDeviceKind device_kind, gdouble x, gdouble y)

Function Documentation

fl_pointer_manager_handle_button_press()

gboolean fl_pointer_manager_handle_button_press	(	FlPointerManager *	manager,
		guint	event_time,
		FlutterPointerDeviceKind	device_kind,
		gdouble	x,
		gdouble	y,
		guint	gdk_button
	)

fl_pointer_manager_handle_button_press: @manager: an #FlPointerManager. @event_time: event time in milliseconds. @device_kind: kind of device generating the event. @x: x co-ordinate of event. @y: y co-ordinate of event. @gdk_button: button being pressed.

Returns TRUE if this event was handled.

Definition at line 105 of file fl_pointer_manager.cc.

                      {
  g_return_val_if_fail(FL_IS_POINTER_MANAGER(self), FALSE);
 
  int64_t button;
  if (!get_mouse_button(gdk_button, &button)) {
    return FALSE;
  }
 
  ensure_pointer_added(self, event_time, device_kind, x, y);
 
  // Drop the event if Flutter already thinks the button is down.
  if ((self->button_state & button) != 0) {
    return FALSE;
  }
 
  int old_button_state = self->button_state;
  FlutterPointerPhase phase = kMove;
  self->button_state ^= button;
  phase = old_button_state == 0 ? kDown : kMove;
 
  g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
  if (engine == nullptr) {
    return FALSE;
  }
 
  fl_engine_send_mouse_pointer_event(
      engine, self->view_id, phase, event_time * kMicrosecondsPerMillisecond, x,
      y, device_kind, 0, 0, self->button_state);
 
  return TRUE;
}

References ensure_pointer_added(), fl_engine_send_mouse_pointer_event(), get_mouse_button(), kMicrosecondsPerMillisecond, and TRUE.

Referenced by button_press_event_cb(), and TEST().

fl_pointer_manager_handle_button_release()

gboolean fl_pointer_manager_handle_button_release	(	FlPointerManager *	manager,
		guint	event_time,
		FlutterPointerDeviceKind	device_kind,
		gdouble	x,
		gdouble	y,
		guint	gdk_button
	)

fl_pointer_manager_handle_button_release: @manager: an #FlPointerManager. @event_time: event time in milliseconds. @device_kind: kind of device generating the event. @x: x co-ordinate of event. @y: y co-ordinate of event. @gdk_button: button being released.

Returns TRUE if this event was handled.

Definition at line 143 of file fl_pointer_manager.cc.

                      {
  g_return_val_if_fail(FL_IS_POINTER_MANAGER(self), FALSE);
 
  int64_t button;
  if (!get_mouse_button(gdk_button, &button)) {
    return FALSE;
  }
 
  // Drop the event if Flutter already thinks the button is up.
  if ((self->button_state & button) == 0) {
    return FALSE;
  }
 
  FlutterPointerPhase phase = kMove;
  self->button_state ^= button;
 
  phase = self->button_state == 0 ? kUp : kMove;
 
  g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
  if (engine == nullptr) {
    return FALSE;
  }
 
  fl_engine_send_mouse_pointer_event(
      engine, self->view_id, phase, event_time * kMicrosecondsPerMillisecond, x,
      y, device_kind, 0, 0, self->button_state);
 
  return TRUE;
}

References fl_engine_send_mouse_pointer_event(), get_mouse_button(), kMicrosecondsPerMillisecond, and TRUE.

Referenced by button_release_event_cb(), and TEST().

fl_pointer_manager_handle_enter()

gboolean fl_pointer_manager_handle_enter	(	FlPointerManager *	manager,
		guint	event_time,
		FlutterPointerDeviceKind	device_kind,
		gdouble	x,
		gdouble	y
	)

fl_pointer_manager_handle_enter: @manager: an #FlPointerManager. @event_time: event time in milliseconds. @device_kind: kind of device generating the event. @x: x co-ordinate of event. @y: y co-ordinate of event.

Returns TRUE if this event was handled.

Definition at line 201 of file fl_pointer_manager.cc.

                                                    {
  g_return_val_if_fail(FL_IS_POINTER_MANAGER(self), FALSE);
 
  g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
  if (engine == nullptr) {
    return FALSE;
  }
 
  ensure_pointer_added(self, event_time, device_kind, x, y);
 
  return TRUE;
}

References ensure_pointer_added(), and TRUE.

Referenced by enter_notify_event_cb(), and TEST().

fl_pointer_manager_handle_leave()

gboolean fl_pointer_manager_handle_leave	(	FlPointerManager *	manager,
		guint	event_time,
		FlutterPointerDeviceKind	device_kind,
		gdouble	x,
		gdouble	y
	)

fl_pointer_manager_handle_leave: @manager: an #FlPointerManager. @event_time: event time in milliseconds. @device_kind: kind of device generating the event. @x: x co-ordinate of event. @y: y co-ordinate of event.

Returns TRUE if this event was handled.

Definition at line 218 of file fl_pointer_manager.cc.

                                                    {
  g_return_val_if_fail(FL_IS_POINTER_MANAGER(self), FALSE);
 
  g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
  if (engine == nullptr) {
    return FALSE;
  }
 
  // Don't remove pointer while button is down; In case of dragging outside of
  // window with mouse grab active Gtk will send another leave notify on
  // release.
  if (self->pointer_inside && self->button_state == 0) {
    fl_engine_send_mouse_pointer_event(engine, self->view_id, kRemove,
                                       event_time * kMicrosecondsPerMillisecond,
                                       x, y, device_kind, 0, 0,
                                       self->button_state);
    self->pointer_inside = FALSE;
  }
 
  return TRUE;
}

References fl_engine_send_mouse_pointer_event(), kMicrosecondsPerMillisecond, and TRUE.

Referenced by leave_notify_event_cb(), and TEST().

fl_pointer_manager_handle_motion()

gboolean fl_pointer_manager_handle_motion	(	FlPointerManager *	manager,
		guint	event_time,
		FlutterPointerDeviceKind	device_kind,
		gdouble	x,
		gdouble	y
	)

fl_pointer_manager_handle_motion: @manager: an #FlPointerManager. @event_time: event time in milliseconds. @device_kind: kind of device generating the event. @x: x co-ordinate of event. @y: y co-ordinate of event.

Returns TRUE if this event was handled.

Definition at line 179 of file fl_pointer_manager.cc.

                                                     {
  g_return_val_if_fail(FL_IS_POINTER_MANAGER(self), FALSE);
 
  g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
  if (engine == nullptr) {
    return FALSE;
  }
 
  ensure_pointer_added(self, event_time, device_kind, x, y);
 
  fl_engine_send_mouse_pointer_event(
      engine, self->view_id, self->button_state != 0 ? kMove : kHover,
      event_time * kMicrosecondsPerMillisecond, x, y, device_kind, 0, 0,
      self->button_state);
 
  return TRUE;
}

References ensure_pointer_added(), fl_engine_send_mouse_pointer_event(), kMicrosecondsPerMillisecond, and TRUE.

Referenced by motion_notify_event_cb(), and TEST().

fl_pointer_manager_new()

FlPointerManager* fl_pointer_manager_new	(	FlutterViewId	view_id,
		FlEngine *	engine
	)

fl_pointer_manager_new: @view_id: view ID to report events for. @engine: an #FlEngine.

Create a new #FlPointerManager.

Returns: a new #FlPointerManager.

Definition at line 94 of file fl_pointer_manager.cc.

                                                           {
  FlPointerManager* self =
      FL_POINTER_MANAGER(g_object_new(fl_pointer_manager_get_type(), nullptr));
 
  self->view_id = view_id;
  g_weak_ref_init(&self->engine, engine);
 
  return self;
}

Referenced by fl_view_new(), fl_view_new_for_engine(), and TEST().

G_DECLARE_FINAL_TYPE()

G_BEGIN_DECLS G_DECLARE_FINAL_TYPE	(	FlPointerManager	,
		fl_pointer_manager	,
		FL	,
		POINTER_MANAGER	,
		GObject
	)