pygame实现非图片按钮效果
本文实例为大家分享了pygame实现非图片按钮效果的具体代码，供大家参考，具体内容如下
按钮类程序
# -*- coding=utf-8 -*-
import threading
import pygame
from pygame.locals import MOUSEBUTTONDOWN
class BFControlId(object):
_instance_lock = threading.Lock()
def __init__(self):
self.id = 1
@classmethod
def instance(cls, *args, **kwargs):
if not hasattr(BFControlId, "_instance"):
BFControlId._instance = BFControlId(*args, **kwargs)
return BFControlId._instance
def get_new_id(self):
self.id += 1
return self.id
CLICK_EFFECT_TIME = 100
class BFButton(object):
def __init__(self, parent, rect, text='Button', click=None):
self.x,self.y,self.width,self.height = rect
self.bg_color = (225,225,225)
self.parent = parent
self.surface = parent.subsurface(rect)
self.is_hover = False
self.in_click = False
self.click_loss_time = 0
self.click_event_id = -1
self.ctl_id = BFControlId().instance().get_new_id()
self._text = text
self._click = click
self._visible = True
self.init_font()
def init_font(self):
font = pygame.font.Font(None, 28)
white = 100, 100, 100
self.textImage = font.render(self._text, True, white)
w, h = self.textImage.get_size()
self._tx = (self.width - w) / 2
self._ty = (self.height - h) / 2
@property
def text(self):
return self._text
@text.setter
def text(self, value):
self._text = value
self.init_font()
@property
def click(self):
return self._click
@click.setter
def click(self, value):
self._click = value
@property
def visible(self):
return self._visible
@visible.setter
def visible(self, value):
self._visible = value
def update(self, event):
if self.in_click and event.type == self.click_event_id:
if self._click: self._click(self)
self.click_event_id = -1
return
x, y = pygame.mouse.get_pos()
if x > self.x and x < self.x + self.width and y > self.y and y < self.y + self.height:
self.is_hover = True
if event.type == MOUSEBUTTONDOWN:
pressed_array = pygame.mouse.get_pressed()
if pressed_array[0]:
self.in_click = True
self.click_loss_time = pygame.time.get_ticks() + CLICK_EFFECT_TIME
self.click_event_id = pygame.USEREVENT+self.ctl_id
pygame.time.set_timer(self.click_event_id,CLICK_EFFECT_TIME-10)
else:
self.is_hover = False
def draw(self):
if self.in_click:
if self.click_loss_time < pygame.time.get_ticks():
self.in_click = False
if not self._visible:
return
if self.in_click:
r,g,b = self.bg_color
k = 0.95
self.surface.fill((r*k, g*k, b*k))
else:
self.surface.fill(self.bg_color)
if self.is_hover:
pygame.draw.rect(self.surface, (0,0,0), (0,0,self.width,self.height), 1)
pygame.draw.rect(self.surface, (100,100,100), (0,0,self.width-1,self.height-1), 1)
layers = 5
r_step = (210-170)/layers
g_step = (225-205)/layers
for i in range(layers):
pygame.draw.rect(self.surface, (170+r_step*i, 205+g_step*i, 255), (i, i, self.width - 2 - i*2, self.height - 2 - i*2), 1)
else:
self.surface.fill(self.bg_color)
pygame.draw.rect(self.surface, (0,0,0), (0,0,self.width,self.height), 1)
pygame.draw.rect(self.surface, (100,100,100), (0,0,self.width-1,self.height-1), 1)
pygame.draw.rect(self.surface, self.bg_color, (0,0,self.width-2,self.height-2), 1)
self.surface.blit(self.textImage, (self._tx, self._ty))
主要给按钮实现了：
1.鼠标悬停效果
2.按钮点击效果
3.文本绘制效果
4.点击后事件触发效果
5.按钮的隐藏和显示控制
使用方法：
btn = BFButton(my_surface,my_rect,text=my_label,click=my_method)
在事件响应处
btn.update(event)
在绘图处
btn.draw()
下面附一个例子
# -*- coding=utf-8 -*-
import pygame
from bf_button import BFButton
pygame.init()
screencaption = pygame.display.set_caption('bf control')
screen = pygame.display.set_mode((400,400))
def do_click1(btn):
pygame.display.set_caption('i click %s,ctl id is %s' % (btn._text,btn.ctl_id))
btn.text = 'be click'
def do_click2(btn):
btn.visible = False
def do_click3(btn):
pygame.quit()
exit()
button1 = BFButton(screen, (120,100,160,40))
button1.text = 'Play'
button1.click = do_click1
button2 = BFButton(screen, (120,180,160,40),text='Hide',click=do_click2)
button3 = BFButton(screen, (120,260,160,40),text='Quit',click=do_click3)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
button1.update(event)
button2.update(event)
button3.update(event)
screen.fill((255,255,255))
button1.draw()
button2.draw()
button3.draw()
pygame.display.update()
例子里有两个按钮
第一个按钮事件是修改界面标题和按钮上的文字
第二个按钮事件是隐藏自己
第三个按钮事件是退出
为方便按钮管理，其实可以定一个ButtonGroup类
class BFButtonGroup(object): def __init__(self): self.btn_list = [] def add_button(self, button): self.btn_list.append(button) def make_button(self, screen, rect, text='Button', click=None): button = BFButton(screen, rect,text=text,click=click) self.add_button(button) def update(self, event): for button in self.btn_list: button.update(event) def draw(self): for button in self.btn_list: button.draw()
这样使用的时候只需要对ButtonGroup进行update和draw
# -*- coding=utf-8 -*-
import pygame
from bf_button import BFButton,BFButtonGroup
pygame.init()
screencaption = pygame.display.set_caption('bf control')
screen = pygame.display.set_mode((400,400))
def do_click1(btn):
pygame.display.set_caption('i click %s,ctl id is %s' % (btn._text,btn.ctl_id))
btn.text = 'be click'
def do_click2(btn):
btn.visible = False
def do_click3(btn):
pygame.quit()
exit()
btn_group = BFButtonGroup()
btn_group.make_button(screen, (120,100,160,40),text='Play',click=do_click1)
btn_group.make_button(screen, (120,180,160,40),text='Hide',click=do_click2)
btn_group.make_button(screen, (120,260,160,40),text='Quit',click=do_click3)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
exit()
btn_group.update(event)
screen.fill((255,255,255))
btn_group.draw()
pygame.display.update()
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持【听图阁-专注于Python设计】。
