def snap_point_to_canvas(self, x, y):
        """
        Moves a point x,y to within the boundaries of the canvas.
        :return: (x,y,snapped) where snapped is True if x or y were changed, False if not.
        """
        if x < 0 or x > self.pixmap.width() or y < 0 or y > self.pixmap.height():
            x = max(x, 0)
            y = max(y, 0)
            x = min(x, self.pixmap.width())
            y = min(y, self.pixmap.height())
            return x, y, True

        return x, y, False

        Moves a point x,y to within the boundaries of the canvas.
        :return: (x,y,snapped) where snapped is True if x or y were changed, False if not.
        
libs/canvas.py