import vgl


name = "Marking Lines"

def main(window):
    frame = vgl.Frame().attach(window_object=window, poscale=(0,0), clone_name="Marking Line")
    lines = list()
    for i in range(0, 24):
        lines.append(vgl.elements.Line(ends=[(0, i/24), (1, i/24)], color="green").attach(frame_object=frame))
    for i in range(0, 32):
        lines.append(vgl.elements.Line(ends=[(i/32, 0), (i/32, 1)], color="green").attach(frame_object=frame))
    # We monitor events like this.
    @window.observerize
    def observer(info):
        if info["delta"] == "key":
            print(info)
        if info["delta"] == "click":
            if info["click"]:
                print(info["cursor"]["poscale"])
        # We make changes like this.
        for i in lines:
            i.set_color('#' + str((info['cursor']['position'][0] + info['cursor']['position'][1]*100 + info['cursor']['position'][0]*10000) % 999999).zfill(6))
    observer()