python的Graphics库

不念不忘少年蓝@ 2022-05-21 13:08 299阅读 0赞

Graphwin对象

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图形对象

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图形颜色

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小栗子：修改温度转换程序

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注意:color\_rgb必须是int类型

#coding=gbk
    from graphics import *
     
    def convert(input):
        celsius = eval(input.getText())    # 输入转换
        fahrenheit = 9.0/5.0 * celsius + 32
        return fahrenheit 
    def colorChange(win,input):
        cnum = eval(input.getText())
        weight = cnum / 100.0
        newcolor =color_rgb(int(255*weight),int(66+150*(1-weight)),int(255*(1-weight)))
        win.setBackground(newcolor)
    def main():
        win = GraphWin("Celsius Converter", 400, 300)
        win.setCoords(0.0, 0.0, 3.0, 4.0)
        # 绘制输入接口
        Text(Point(1,3),
             " Celsius Temperature:").draw(win)
        Text(Point(2,2.7),
             " (Please input 0.0-100.0 )").draw(win)
        Text(Point(1,1),
             "Fahrenheit Temperature:").draw(win)
        input = Entry(Point(2,3), 5)
        input.setText("0.0")
        input.draw(win)
        output = Text(Point(2,1),"")
        output.draw(win)
        button = Text(Point(1.5,2.0),"Convert It")
        button.draw(win)
        rect = Rectangle(Point(1,1.5), Point(2,2.5))
        rect.draw(win)
        # 等待鼠标点击
        win.getMouse()
        result = convert(input)    # 转换输入
        output.setText(result)    # 显示输出 
        # 改变颜色
        colorChange(win,input)
        # 改变按钮字体
        button.setText("Quit")
        # 等待点击事件，退出程序
        win.getMouse()
        win.close()
    
    main()

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