def sceneEventFilter(self, event: QtCore.QEvent) -> bool:
# call the inherited method
if MaskTool.sceneEventFilter(self, event):
return True
if self.parent.maskTypeChooser.active_draw_type is None:
return True
# Mouse wheel to change the cursor size
if event.type() == QtCore.QEvent.GraphicsSceneWheel:
try: # PyQt 5
angle = event.angleDelta().y()
except AttributeError: # PyQt 4
angle = event.delta()
# wheel with CTRL means changing the cursor size
if event.modifiers() == QtCore.Qt.ControlModifier:
if angle > 0:
self.parent.changeCursorSize(+1)
else:
self.parent.changeCursorSize(-1)
event.accept()
return True
# Mouse press starts drawing
if event.type() == QtCore.QEvent.GraphicsSceneMousePress and event.button() == QtCore.Qt.LeftButton:
# if no mask has been created, create one for painting
if self.parent.MaskEmpty is True:
self.parent.AddEmptyMask()
# store the coordinates
self.last_x = event.pos().x()
self.last_y = event.pos().y()
# add a first circle (so that even if the mouse isn't moved something is drawn)
self.DrawLine(self.last_x, self.last_x + 0.00001, self.last_y, self.last_y)
# set the changed flag for the database
self.parent.data_file.setChangesMade()
# accept the event
return True
if event.type() == QtCore.QEvent.GraphicsSceneMouseRelease and event.button() == QtCore.Qt.LeftButton:
if self.parent.config.auto_mask_update:
with self.parent.window.changeTracker("draw line in mask"):
self.parent.save()
# Mouse move event to draw the stroke
if event.type() == QtCore.QEvent.GraphicsSceneMouseMove:
# get the new position
self.parent.DrawCursor.setPos(event.pos())
pos_x = event.pos().x()
pos_y = event.pos().y()
# draw a line and store the position
self.DrawLine(pos_x, self.last_x, pos_y, self.last_y)
self.last_x = pos_x
self.last_y = pos_y
# accept the event
return True
# Mouse hover updates the color_under_cursor and displays the brush cursor
if event.type() == QtCore.QEvent.GraphicsSceneHoverMove:
# move brush cursor
self.parent.DrawCursor.setPos(event.pos())
# don't accept the event, so that others can accept it
return False
def sceneEventFilter(self, event: QtCore.QEvent) -> None:
if event.type() == QtCore.QEvent.GraphicsSceneWheel:
try: # PyQt 5
angle = event.angleDelta().y()
except AttributeError: # PyQt 4
angle = event.delta()
# wheel with SHIFT means changing the opacity
if event.modifiers() == QtCore.Qt.ShiftModifier:
if angle > 0:
self.parent.changeOpacity(+0.1)
else:
self.parent.changeOpacity(-0.1)
event.accept()
return True
def sceneEventFilter(self, event: QtCore.QEvent) -> bool:
if event.type() == QtCore.QEvent.GraphicsSceneWheel:
try: # PyQt 5
angle = event.angleDelta().y()
except AttributeError: # PyQt 4
angle = event.delta()
# wheel with CTRL means changing the cursor size
if event.modifiers() == QtCore.Qt.ControlModifier:
if angle > 0:
self.changeCursorSize(+1)
else:
self.changeCursorSize(-1)
event.accept()
return True
# wheel with SHIFT means changing the opacity
elif event.modifiers() == QtCore.Qt.ShiftModifier:
if angle > 0:
self.changeOpacity(+0.1)
else:
self.changeOpacity(-0.1)
event.accept()
return True
# don't accept the event, so that others can accept it
return False
