def disconnect_from(self, port=None, push_undo=True):
"""
Disconnect from the specified port and emits the
:attr:`NodeGraph.port_disconnected` signal from the parent node graph.
Args:
port (NodeGraphQt.Port): port object.
push_undo (bool): register the command to the undo stack. (default: True)
"""
if not port:
return
if self.locked() or port.locked():
name = [p.name() for p in [self, port] if p.locked()][0]
raise PortError(
'Can\'t disconnect port because "{}" is locked.'.format(name))
graph = self.node().graph
if push_undo:
graph.undo_stack().beginMacro('disconnect port')
graph.undo_stack().push(PortDisconnectedCmd(self, port))
graph.undo_stack().push(NodeInputDisconnectedCmd(self, port))
graph.undo_stack().endMacro()
else:
PortDisconnectedCmd(self, port).redo()
NodeInputDisconnectedCmd(self, port).redo()
# emit "port_disconnected" signal from the parent graph.
ports = {p.type_(): p for p in [self, port]}
graph.port_disconnected.emit(ports[PortTypeEnum.IN.value],
ports[PortTypeEnum.OUT.value])
def connect_to(self, port=None):
"""
Create connection to the specified port and emits the "port_connected"
signal from the parent node graph.
Args:
port (NodeGraphQt.Port): port object.
"""
if not port:
return
graph = self.node().graph
viewer = graph.viewer()
undo_stack = graph.undo_stack()
undo_stack.beginMacro('connect port')
pre_conn_port = None
src_conn_ports = self.connected_ports()
if not self.multi_connection() and src_conn_ports:
pre_conn_port = src_conn_ports[0]
if not port:
if pre_conn_port:
undo_stack.push(NodeInputDisconnectedCmd(self, port))
undo_stack.push(PortDisconnectedCmd(self, port))
return
if graph.acyclic() and viewer.acyclic_check(self.view, port.view):
if pre_conn_port:
undo_stack.push(NodeInputDisconnectedCmd(self, pre_conn_port))
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
return
trg_conn_ports = port.connected_ports()
if not port.multi_connection() and trg_conn_ports:
dettached_port = trg_conn_ports[0]
undo_stack.push(NodeInputDisconnectedCmd(port, dettached_port))
undo_stack.push(PortDisconnectedCmd(port, dettached_port))
if pre_conn_port:
undo_stack.push(NodeInputDisconnectedCmd(self, pre_conn_port))
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
undo_stack.push(NodeInputConnectedCmd(self, port))
undo_stack.push(PortConnectedCmd(self, port))
undo_stack.endMacro()
# emit "port_connected" signal from the parent graph.
ports = {p.type_(): p for p in [self, port]}
graph.port_connected.emit(ports[IN_PORT], ports[OUT_PORT])
def disconnect_from(self, port=None):
"""
Disconnect from the specified port.
Args:
port (NodeGraphQt.Port): port object.
"""
if not port:
return
graph = self.node().graph
graph.undo_stack().push(PortDisconnectedCmd(self, port))
def connect_to(self, port=None):
"""
Create connection to the specified port.
Args:
port (NodeGraphQt.Port): port object.
"""
if not port:
return
graph = self.node().graph
viewer = graph.viewer()
undo_stack = graph.undo_stack()
undo_stack.beginMacro('connected port')
pre_conn_port = None
src_conn_ports = self.connected_ports()
if not self.multi_connection() and src_conn_ports:
pre_conn_port = src_conn_ports[0]
if not port:
if pre_conn_port:
undo_stack.push(PortDisconnectedCmd(self, port))
return
if graph.acyclic() and viewer.acyclic_check(self.view, port.view):
if pre_conn_port:
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
return
trg_conn_ports = port.connected_ports()
if not port.multi_connection() and trg_conn_ports:
dettached_port = trg_conn_ports[0]
undo_stack.push(PortDisconnectedCmd(port, dettached_port))
if pre_conn_port:
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
undo_stack.push(PortConnectedCmd(self, port))
undo_stack.endMacro()
def disconnect_from(self, port=None):
"""
Disconnect from the specified port and emits the "port_disconnected"
signal from the parent node graph.
Args:
port (NodeGraphQt.Port): port object.
"""
if not port:
return
graph = self.node().graph
graph.undo_stack().push(PortDisconnectedCmd(self, port))
# emit "port_disconnected" signal from the parent graph.
graph.port_disconnected.emit(self, port)
def set_visible(self, visible=True):
"""
Sets weather the port should be visible or not.
Args:
visible (bool): true if visible.
"""
self.model.visible = visible
label = 'show' if visible else 'hide'
undo_stack = self.node().graph.undo_stack()
undo_stack.beginMacro('{} port {}'.format(label, self.name()))
for port in self.connected_ports():
undo_stack.push(PortDisconnectedCmd(self, port))
undo_stack.push(PortVisibleCmd(self))
undo_stack.endMacro()
def disconnect_from(self, port=None):
"""
Disconnect from the specified port and emits the "port_disconnected"
signal from the parent node graph.
Args:
port (NodeGraphQt.Port): port object.
"""
if not port:
return
graph = self.node().graph
graph.undo_stack().beginMacro('disconnect port')
graph.undo_stack().push(NodeInputDisconnectedCmd(self, port))
graph.undo_stack().push(PortDisconnectedCmd(self, port))
graph.undo_stack().endMacro()
# emit "port_disconnected" signal from the parent graph.
ports = {p.type_(): p for p in [self, port]}
graph.port_disconnected.emit(ports[IN_PORT], ports[OUT_PORT])
def connect_to(self, port=None, push_undo=True):
"""
Create connection to the specified port and emits the
:attr:`NodeGraph.port_connected` signal from the parent node graph.
Args:
port (NodeGraphQt.Port): port object.
push_undo (bool): register the command to the undo stack. (default: True)
"""
if not port:
return
if self in port.connected_ports():
return
if self.locked() or port.locked():
name = [p.name() for p in [self, port] if p.locked()][0]
raise PortError(
'Can\'t connect port because "{}" is locked.'.format(name))
graph = self.node().graph
viewer = graph.viewer()
if push_undo:
undo_stack = graph.undo_stack()
undo_stack.beginMacro('connect port')
pre_conn_port = None
src_conn_ports = self.connected_ports()
if not self.multi_connection() and src_conn_ports:
pre_conn_port = src_conn_ports[0]
if not port:
if pre_conn_port:
if push_undo:
undo_stack.push(PortDisconnectedCmd(self, port))
undo_stack.push(NodeInputDisconnectedCmd(self, port))
undo_stack.endMacro()
else:
PortDisconnectedCmd(self, port).redo()
NodeInputDisconnectedCmd(self, port).redo()
return
if graph.acyclic() and viewer.acyclic_check(self.view, port.view):
if pre_conn_port:
if push_undo:
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
undo_stack.push(
NodeInputDisconnectedCmd(self, pre_conn_port))
undo_stack.endMacro()
else:
PortDisconnectedCmd(self, pre_conn_port).redo()
NodeInputDisconnectedCmd(self, pre_conn_port).redo()
return
trg_conn_ports = port.connected_ports()
if not port.multi_connection() and trg_conn_ports:
dettached_port = trg_conn_ports[0]
if push_undo:
undo_stack.push(PortDisconnectedCmd(port, dettached_port))
undo_stack.push(NodeInputDisconnectedCmd(port, dettached_port))
else:
PortDisconnectedCmd(port, dettached_port).redo()
NodeInputDisconnectedCmd(port, dettached_port).redo()
if pre_conn_port:
if push_undo:
undo_stack.push(PortDisconnectedCmd(self, pre_conn_port))
undo_stack.push(NodeInputDisconnectedCmd(self, pre_conn_port))
else:
PortDisconnectedCmd(self, pre_conn_port).redo()
NodeInputDisconnectedCmd(self, pre_conn_port).redo()
if push_undo:
undo_stack.push(PortConnectedCmd(self, port))
undo_stack.push(NodeInputConnectedCmd(self, port))
undo_stack.endMacro()
else:
PortConnectedCmd(self, port).redo()
NodeInputConnectedCmd(self, port).redo()
# emit "port_connected" signal from the parent graph.
ports = {p.type_(): p for p in [self, port]}
graph.port_connected.emit(ports[PortTypeEnum.IN.value],
ports[PortTypeEnum.OUT.value])