""" Defines the RectZoomTool class.
"""
from zoom_tool import ZoomTool

class RectZoomTool(ZoomTool):
    """
    Allows the user to drag a zoom box around a region of the plot.

    This is a subclass of ZoomTool, with different default values for some
    traits.
    """

    # Selects a box in two dimensions (overrides SimpleZoom).
    tool_mode = "box"

    # The tool is always on; left-clicking initiates a zoom (overrides
    # SimpleZoom).
    always_on = True