Python Tkinter模块实现时钟功能应用示例

 # coding=utf-8 from Tkinter import * import _tkinter import math import time from threading import Thread 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.timeVar = StringVar() # self.timeVar.set('') self.timeLabel = Label(self.canvas.master, textvariable=self.timeVar) self.timeLabel.pack(side=BOTTOM) #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.timeVar.set(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) def run(self): def _run(): while True: tm = time.localtime() id_lists = self.showTime(tm) self.canvas.master.update() time.sleep(1) self._deleteItems(id_lists) thrd = Thread(target=_run) # 创建新的线程 thrd.run() # 启动线程 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('www.0133.cn 时钟') clock = Clock(root, 200, 200, 400, 400, 150) clock.drawClockDial() clock.run() root.mainloop()