def test_get_unselected_item_at_point(view, box):
box.width = 50
box.height = 50
view.selection.select_items(box)
assert item_at_point(view, (10, 10)) is box
assert item_at_point(view, (10, 10), exclude=(box, )) is None
def test_get_item_at_point(view, box):
"""Hover tool only reacts on motion-notify events."""
box.width = 50
box.height = 50
view.request_update((box, ))
assert item_at_point(view, (10, 10)) is box
assert item_at_point(view, (60, 10)) is None
def move(self, pos):
"""Move the item.
x and y are in view coordinates.
"""
super().move(pos)
item = self.item
view = self.view
x, y = pos
current_parent = item.parent
over_item = item_at_point(view, (x, y), selected=False)
if not over_item:
view.selection.dropzone_item = None
return
if current_parent and not over_item:
# are we going to remove from parent?
group = Group(current_parent, item)
if group:
view.selection.dropzone_item = current_parent
current_parent.request_update(matrix=False)
if over_item:
# are we going to add to parent?
group = Group(over_item, item)
if group and group.can_contain():
view.selection.dropzone_item = over_item
over_item.request_update(matrix=False)
def on_drag_begin(gesture, start_x, start_y, segment_state):
view = gesture.get_widget()
pos = (start_x, start_y)
item = item_at_point(view, pos)
handle = item and maybe_split_segment(view, item, pos)
if handle:
segment_state.moving = HandleMove(item, handle, view)
gesture.set_state(Gtk.EventSequenceState.CLAIMED)
else:
gesture.set_state(Gtk.EventSequenceState.DENIED)
def on_motion(controller, x, y, item_class: Type[Presentation]):
view: GtkView = controller.get_widget()
model = view.model
try:
parent = item_at_point(view, (x, y))
except KeyError:
parent = None
if parent:
adapter_type = Group.registry.get_registration(type(parent), item_class)
# No in depth check is done to see if we can actually connect,
# since we only have the item_class, not an actual item.
view.selection.dropzone_item = parent if adapter_type else None
model.request_update(parent, matrix=False)
else:
if view.selection.dropzone_item:
model.request_update(view.selection.dropzone_item)
view.selection.dropzone_item = None
def on_motion(controller, x, y, item_class: Type[Presentation]):
view: GtkView = controller.get_widget()
model = view.model
try:
parent = item_at_point(view, (x, y))
except KeyError:
parent = None
if parent:
parent_type = type(parent)
dropzone = has_registration(Group, parent_type, item_class) or has_registration( # type: ignore[arg-type]
Connector, parent_type, item_class # type: ignore[arg-type]
)
view.selection.dropzone_item = parent if dropzone else None
model.request_update(parent, matrix=False)
else:
if view.selection.dropzone_item:
model.request_update(view.selection.dropzone_item)
view.selection.dropzone_item = None
def on_motion(controller, x, y, item_class):
view: GtkView = controller.get_widget()
model = view.model
try:
parent = item_at_point(view, (x, y))
except KeyError:
parent = None
if parent:
# create dummy adapter
connections = Connections()
adapter = Group(parent, item_class(connections))
if adapter and adapter.can_contain():
view.selection.dropzone_item = parent
else:
view.selection.dropzone_item = None
model.request_update(parent, matrix=False)
else:
if view.selection.dropzone_item:
model.request_update(view.selection.dropzone_item)
view.selection.dropzone_item = None
def find_item_at_point(view: GtkView, pos: Pos) -> Optional[Item]:
item, handle = handle_at_point(view, pos)
return item or item_at_point(view, pos)