Tkinter应用之时钟

效果:

代码:

# coding=utf-8
from Tkinter import *
import _tkinter
import math
import time

class Clock:
    def __init__(self, master, x, y, width, height, radius):
        ‘‘‘
        :param master: 父窗口
        :param x: 时钟中心点的x坐标
        :param y: 时钟中心点的y坐标
        :param width: 画布的宽度
        :param height:  画布的高度
        :param radius: 时钟钟盘的半径
        ‘‘‘
        self.centerX = x
        self.centerY = y
        self.radius = radius
        self.canvas = Canvas(master, width=width, height=height)  # 画布
        self.canvas.pack()
        self.canvas.create_oval(
            x - radius,
            y - radius,
            x + radius,
            y + radius)  # 画钟框
        self.id_lists = []
        self.hourHandRadius = self.radius * 1.0 / 4   # 指针长度
        self.minHandRadius = self.radius * 2.0 / 3    # 分针长度
        self.secHandRadius = self.radius * 4.0 / 5    # 秒针长度
        self.timeLabel = None
        #self.canvas.master.protocol(‘WM_DELETE_WINDOW‘, self.canvas.master.destroy)

    def __del__(self):
        self._deleteItems(self.id_lists)

    # 绘制时钟钟盘
    def drawClockDial(self):
        # 绘制钟盘上的数字1-12
        r = self.radius - 15
        for i in range(1, 13):
            rad = 2 * math.pi / 12 * i
            x = self.centerX + math.sin(rad) * r
            y = self.centerY - math.cos(rad) * r
            id = self.canvas.create_text(x, y, text=str(i))
            self.id_lists.append(id)

        # 绘制钟盘上的刻度
        r1 = self.radius - 5
        r2 = self.radius
        for i in range(1, 61):
            rad = 2 * math.pi / 60 * i
            x1, y1 = self._getPosByRadAndRadius(rad, r1)
            x2, y2 = self._getPosByRadAndRadius(rad, r2)
            id = self.canvas.create_line(x1, y1, x2, y2)
            self.id_lists.append(id)

    # 显示时间
    def showTime(self, tm):
        hour = tm.tm_hour % 12
        min = tm.tm_min
        sec = tm.tm_sec

        sec_rad = 2 * math.pi / 60 * sec
        min_rad = 2 * math.pi / 60 * (min + sec / 60.0)
        hour_rad = 2 * math.pi / 12 * (hour + min / 60.0)

        timeStr = ‘当前时间: %d-%02d-%02d %02d:%02d:%02d‘ % (
            tm.tm_year, tm.tm_mon, tm.tm_mday, hour, min, sec)
        self.timeLabel = self.canvas.create_text(self.centerX, self.radius * 3, text=timeStr)

        hour_id = self._drawLine(hour_rad, self.hourHandRadius, 6)
        min_id = self._drawLine(min_rad, self.minHandRadius, 4)
        sec_id = self._drawLine(sec_rad, self.secHandRadius, 3)
        return (hour_id, min_id, sec_id, self.timeLabel)

    def run(self):
        while True:
            tm = time.localtime()
            id_lists = self.showTime(tm)
            self.canvas.master.update()
            time.sleep(1)
            self._deleteItems(id_lists)

    def _drawLine(self, rad, radius, width):
        x, y = self._getPosByRadAndRadius(rad, radius)
        id = self.canvas.create_line(
            self.centerX, self.centerY, x, y, width=width)
        return id

    def _getPosByRadAndRadius(self, rad, radius):
        x = self.centerX + radius * math.sin(rad)
        y = self.centerY - radius * math.cos(rad)
        return (x, y)

    def _deleteItems(self, id_lists):
        for id in id_lists:
            try:
                self.canvas.delete(id)
            except BaseException:
                pass

if __name__ == ‘__main__‘:
    root = Tk()
    root.title(‘时钟‘)
    clock = Clock(root, 200, 200, 400, 500, 150)
    clock.drawClockDial()
    clock.run()
    root.mainloop()

待解决的bug:

关闭程序的时候,会出现如下的错误: