gistfile1.py

import sys
import pygame as pg


class MouseTester(object):
    def __init__(self):
        self.done = False
        self.clock = pg.time.Clock()
        self.screen = pg.display.set_mode((800, 800))
        self.center_rect = pg.Rect(0, 0, 10, 10)
        self.center_rect.center = self.screen.get_rect().center
        self.font = pg.font.Font("freesansbold.ttf", 24)
        self.clicked_label = self.font.render("Last click: No click yet", True, pg.Color("white"))
    
    def update(self):
        pg.display.set_caption("{}".format(pg.mouse.get_pos()))
        
    def draw(self):
        self.screen.fill(pg.Color("black"))
        pg.draw.rect(self.screen, pg.Color("blue"), self.center_rect)
        self.screen.blit(self.clicked_label, (0, 0))
        
    def event_loop(self):
        for event in pg.event.get():
            if event.type == pg.QUIT:
                self.done = True
            if event.type == pg.MOUSEBUTTONDOWN:
                self.clicked_label = self.font.render("Last click: {}".format(event.pos), True, pg.Color("white"))
                
    def run(self):
        while not self.done:
            self.event_loop()
            self.update()
            self.draw()
            pg.display.update()
            self.clock.tick(30)
            
            
if __name__ == "__main__":
    pg.init()
    test= MouseTester()
    test.run()
    pg.quit()
    sys.exit()