OOP Workshop

Check Button Clicks 

def anyShapeSelected(x,y):

    global selectedButton
    for i in range(len(shapeButtons)):
        shapeB = shapeButtons[i]

        if(shapeB.isClicked(x,y)):
            print(shapeB.buttonShape, "was clicked")
            if(shapeB is selectedButton):
                return False
            selectedButton = shapeB
            return True
 
    return False

Whenever the pointer clicks on the display, all buttons are checked for the given pair of coordinates to decide whether the selected button has changed.