def on_drag_end(gesture, offset_x, offset_y, placement_state):
if placement_state.moving:
view = gesture.get_widget()
_, x, y = gesture.get_start_point()
item = placement_state.moving.item
placement_state.moving.stop_move((x + offset_x, y + offset_y))
connect_opposite_handle(view, item, x, y, placement_state.handle_index)
placement_state.event_manager.handle(DiagramItemPlaced(item))
def on_drag_begin(gesture, start_x, start_y, placement_state):
view = gesture.get_widget()
gesture.set_state(Gtk.EventSequenceState.CLAIMED)
item = create_item(view, placement_state.factory, start_x, start_y)
handle = item.handles()[placement_state.handle_index]
if handle.movable:
x, y = view.get_matrix_v2i(item).transform_point(start_x, start_y)
connect_opposite_handle(view, item, x, y, placement_state.handle_index)
placement_state.moving = HandleMove(item, handle, view)
placement_state.moving.start_move((start_x, start_y))
else:
placement_state.event_manager.handle(DiagramItemPlaced(item))
view.selection.dropzone_item = None
def on_drag_end(gesture, offset_x, offset_y, placement_state):
if placement_state.moving:
_, x, y = gesture.get_start_point()
placement_state.moving.stop_move((x + offset_x, y + offset_y))
placement_state.event_manager.handle(
DiagramItemPlaced(placement_state.moving.item))
def on_button_release(self, event):
self.event_manager.handle(DiagramItemPlaced(self.new_item))
return super().on_button_release(event)