def PointerMotionEvent(self, event):
if self.button_down:
if self.canvas is not None:
press = self.pressevent
if hypot(press.x - event.x, press.y - event.y) > 3:
guide = GuideLine(Point(0, 0), self.orient == HORIZONTAL)
self.canvas.PlaceObject(guide)
press.x = press.x_root - self.canvas.winfo_rootx()
press.y = press.y_root - self.canvas.winfo_rooty()
self.canvas.ButtonPressEvent(press)
self.canvas.grab_set()
self.button_down = 0
def guide(self, pos, horizontal):
if horizontal:
p = Point(0, pos)
else:
p = Point(pos, 0)
self.append_object(GuideLine(p, horizontal))
def AddGuideLine(self, horizontal=1): self.canvas.PlaceObject(GuideLine(Point(0, 0), horizontal))