ADD file via upload

button.py

@@ -0,0 +1,113 @@
+import pygame as pg
+
+#实现一个按键的类
+#参数：
+#    rect:按键大小位置
+#    color:颜色
+#    function:回调函数
+#    clicked:按下状态
+#    hovered:悬停状态
+#    hover_text:悬停显示文本
+#    clicked_text:按下显示文本
+#    process_kwargs(kwargs):其他用户个性化配置，
+#    简单来说就是各种属性参数
+class Button(object):
+    #初始化
+    def __init__(self,rect,color,function,**kwargs):
+        self.rect = pg.Rect(rect)
+        self.color = color
+        self.function = function
+        self.clicked = False
+        self.hovered = False
+        self.hover_text = None
+        self.clicked_text = None
+        self.process_kwargs(kwargs)
+        self.render_text()
+
+    #用于设置其他的参数
+    def process_kwargs(self,kwargs):
+        settings = {"text" : None,
+                    "font" : pg.font.Font(None,24),  #调用默认自带字体
+                    "call_on_release" : True,
+                    "hover_color" : None,
+                    "clicked_color" : None,
+                    "font_color" : (106, 90, 205),
+                    "hover_font_color" : None,
+                    "clicked_font_color" : None,
+                    "click_sound" : None,
+                    "hover_sound" : None}
+        for kwarg in kwargs:
+            if kwarg in settings:
+                settings[kwarg] = kwargs[kwarg]
+            else:
+                raise AttributeError("Button has no keyword: {}".format(kwarg))
+        self.__dict__.update(settings)
+
+    #显示按键文本
+    def render_text(self):
+        if self.text:
+            if self.hover_font_color:
+                color = self.hover_font_color
+                self.hover_text = self.font.render(self.text,True,color)
+            if self.clicked_font_color:
+                color = self.clicked_font_color
+                self.clicked_text = self.font.render(self.text,True,color)
+            self.text = self.font.render(self.text,True,self.font_color)
+
+    #按键事件  分别处理按下和松开的事件
+    def check_event(self,event,tip = 0):
+        if event.type == pg.MOUSEBUTTONDOWN and event.button == 1: # 有按键按下动作
+            return self.on_click(event,tip)
+        elif event.type == pg.MOUSEBUTTONUP and event.button == 1: # 有按键释放动作
+            return self.on_release(event,tip)
+        else: # 无事件
+            return tip
+
+    #按键按下事件处理
+    def on_click(self,event,tip = 0):
+        if self.rect.collidepoint(event.pos): # 按键冲突检查 判断是否为本实例按键区域
+            self.clicked = True
+            if not self.call_on_release:
+                return self.function() # 执行回调函数
+            else:
+                return tip
+        else:
+            return  tip
+
+    #按键松开事件处理
+    def on_release(self,event,tip = 0):
+        if self.clicked and self.call_on_release:
+            self.clicked = False
+            if self.click_sound:
+                self.click_sound.play() # 按键按下音效
+            return self.function() # 执行回调函数
+        else:
+            return tip
+       
+    #按键悬停事件
+    def check_hover(self):
+        if self.rect.collidepoint(pg.mouse.get_pos()):
+            if not self.hovered:
+                self.hovered = True
+                if self.hover_sound:
+                    self.hover_sound.play()  #按键悬浮音效
+        else:
+            self.hovered = False
+
+    #刷新按键状态
+    def update(self,surface):                    #松开状态
+        color = self.color
+        text = self.text
+        self.check_hover()
+        if self.clicked and self.clicked_color:  #按下状态
+            color = self.clicked_color
+            if self.clicked_font_color:
+                text = self.clicked_text
+        elif self.hovered and self.hover_color:  #悬浮状态
+            color = self.hover_color
+            if self.hover_font_color:
+                text = self.hover_text
+        surface.fill(color,self.rect.inflate(0,0))
+        if self.text:
+            text_rect = text.get_rect(center=self.rect.center)
+            surface.blit(text,text_rect)