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# buttons.py
"""
Copyright (C) 2010 Peter Hewitt
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
"""
import pygame
import g
import utils
class Button:
_instances = []
def __init__(self, name, (x1, y1), centre=True): # eg ('plus',(30,40))
self._instances.append(self)
up = utils.load_image(name + "_up.png", True)
down = utils.load_image(name + "_down.png", True)
w = up.get_width()
h = up.get_height()
x = x1
y = y1
if centre:
self.cx = x
self.cy = y
x = x - w / 2
y = y - h / 2
else:
self.cx = x + w / 2
self.cy = y + h / 2
self.rect = pygame.Rect(x, y, w, h)
self.name = name
self.x = x
self.y = y
self.active = True
self.up = up
self.down = down
self.stay_down = False
def mouse_on(self):
mx, my = g.pos
return self.rect.collidepoint(mx, my)
def draw_up(self):
g.screen.blit(self.up, (self.x, self.y))
def draw_down(self):
g.screen.blit(self.down, (self.x, self.y))
def on(self):
self.active = True
def off(self):
self.active = False
def draw():
for b in Button._instances:
if b.active:
if b.stay_down:
b.draw_down()
else:
b.draw_up()
def check():
clear()
for b in Button._instances:
if b.active:
if b.mouse_on():
if b.name in ('xyz1', 'xyz2'):
b.stay_down = True
else:
b.draw_down()
g.screen.blit(g.pointer, g.pos)
pygame.display.flip()
pygame.time.wait(300)
return b.name
return '' # no button pressed
def clear():
for b in Button._instances:
b.stay_down = False
def active(name):
for b in Button._instances:
if b.name == name:
return b.active
return False # not found
def stay_down(name):
for b in Button._instances:
if b.name == name:
b.stay_down = True
return
return
def mouse_on(name):
mx, my = g.pos
for b in Button._instances:
if b.name == name:
return b.rect.collidepoint(mx, my)
return False
def set_mouse(name):
p2 = g.pointer.get_height() / 2
for b in Button._instances:
if b.name == name:
x = b.cx
y = b.cy + p2
pygame.mouse.set_pos(x, y)
g.pos = (x, y)
# eg1 buttons.on('plus')
# eg2 buttons.on(['plus','times'])
def on(name):
if isinstance(name, str):
list1 = []
list1.append(name)
else:
list1 = name
for b in Button._instances:
if b.name in list1:
b.active = True
# eg1 buttons.off('plus')
# eg2 buttons.off(['plus','times'])
def off(name):
if isinstance(name, str):
list1 = []
list1.append(name)
else:
list1 = name
for b in Button._instances:
if b.name in list1:
b.active = False
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