button.py 文件源码

def update(self, *args):
        """
        Handles the clicking of the Button and calls the function given in the constructor.

        parameters: tuple arguments for the update (first argument should be an instance pygame.event.Event)
        return values: -
        """
        if self._state:
            if self._state >= 2:
                self._state = 1
            else:
                self._state = 0
            self.markDirty()
        if len(args) > 0 and self.isActive():
            event = args[0]
            if event.type == pygame.MOUSEBUTTONUP:
                if self.rect.collidepoint(event.pos):
                    if event.button == 1:
                        try:
                            self._callback()
                        except:
                            pass
            elif event.type == pygame.MOUSEBUTTONDOWN:
                if self.rect.collidepoint(event.pos):
                    if event.button == 1:
                        self._state = 2
                    else:
                        self._state = 1
                    self.markDirty()
            elif event.type == pygame.MOUSEMOTION:
                if self.rect.collidepoint(event.pos):
                    if event.buttons[0]:
                        self._state = 2
                    else:
                        self._state = 1
                    self.markDirty()

        super(Button, self).update(*args)