def mousePressEvent(self, event):
alt_modifier = event.modifiers() == QtCore.Qt.AltModifier
shift_modifier = event.modifiers() == QtCore.Qt.ShiftModifier
if event.button() == QtCore.Qt.LeftButton:
self.LMB_state = True
elif event.button() == QtCore.Qt.RightButton:
self.RMB_state = True
elif event.button() == QtCore.Qt.MiddleButton:
self.MMB_state = True
self._origin_pos = event.pos()
self._previous_pos = event.pos()
self._prev_selection = self.selected_nodes()
# close tab search
if self._search_widget.isVisible():
self.tab_search_toggle()
# cursor pos.
map_pos = self.mapToScene(event.pos())
# pipe slicer enabled.
if event.modifiers() == (QtCore.Qt.AltModifier
| QtCore.Qt.ShiftModifier):
self._pipe_slicer.draw_path(map_pos, map_pos)
self._pipe_slicer.setVisible(True)
return
if alt_modifier:
return
items = self._items_near(map_pos, None, 20, 20)
nodes = [i for i in items if isinstance(i, AbstractNodeItem)]
# toggle extend node selection.
if shift_modifier:
for node in nodes:
node.selected = not node.selected
# update the recorded node positions.
self._node_positions.update(
{n: n.xy_pos
for n in self.selected_nodes()})
# show selection selection marquee
if self.LMB_state and not items:
rect = QtCore.QRect(self._previous_pos, QtCore.QSize())
rect = rect.normalized()
map_rect = self.mapToScene(rect).boundingRect()
self.scene().update(map_rect)
self._rubber_band.setGeometry(rect)
self._rubber_band.show()
if not shift_modifier:
super(NodeViewer, self).mousePressEvent(event)
def mousePressEvent(self, event):
if event.button() == QtCore.Qt.LeftButton:
self.LMB_state = True
elif event.button() == QtCore.Qt.RightButton:
self.RMB_state = True
elif event.button() == QtCore.Qt.MiddleButton:
self.MMB_state = True
self._origin_pos = event.pos()
self._previous_pos = event.pos()
self._prev_selection_nodes, \
self._prev_selection_pipes = self.selected_items()
# close tab search
if self._search_widget.isVisible():
self.tab_search_toggle()
# cursor pos.
map_pos = self.mapToScene(event.pos())
# pipe slicer enabled.
if self.ALT_state and self.SHIFT_state and self.LMB_state:
self._SLICER_PIPE.draw_path(map_pos, map_pos)
self._SLICER_PIPE.setVisible(True)
return
# pan mode.
if self.ALT_state:
return
items = self._items_near(map_pos, None, 20, 20)
nodes = [i for i in items if isinstance(i, AbstractNodeItem)]
pipes = [i for i in items if isinstance(i, Pipe)]
if nodes:
self.MMB_state = False
# toggle extend node selection.
if self.LMB_state:
if self.SHIFT_state:
for node in nodes:
node.selected = not node.selected
elif self.CTRL_state:
for node in nodes:
node.selected = False
# update the recorded node positions.
self._node_positions.update(
{n: n.xy_pos
for n in self.selected_nodes()})
# show selection selection marquee.
if self.LMB_state and not items:
rect = QtCore.QRect(self._previous_pos, QtCore.QSize())
rect = rect.normalized()
map_rect = self.mapToScene(rect).boundingRect()
self.scene().update(map_rect)
self._rubber_band.setGeometry(rect)
self._rubber_band.show()
# allow new live pipe with the shift modifier.
# if self.LMB_state:
# if (not self.SHIFT_state and not self.CTRL_state) or\
# (self.SHIFT_state and pipes):
if not self._LIVE_PIPE.isVisible():
super(NodeViewer, self).mousePressEvent(event)
