from tkinter import
*import time
# 繼承自 frame 的類
class
clock
(frame)
: def __init__
(self)
: frame.
__init__
(self)
self._start =
0.0 # 私有 開始時間設為 0
self._passtime =
0.0 # 已經過去了的時間設為 0
self._isrunning = false # 秒錶是否在執行 預設為否
self.timestr =
strin**ar
() # 時間字串
self.
layout
() # 圖形介面布局
# 布局
def layout
(self)
: lab =
label
(self, textvariable=self.timestr, font=
100)
self.
_settime
(self._passtime)
lab.
pack
(fill=
"x", expand=
1, pady=20)
# 設定時間
def _settime
(self, passtime)
: minutes =
int(passtime/60)
seconds =
int(passtime - minutes *
60.0
) mseconds =
int(
(passtime - minutes *
60.0
- seconds)*10
) self.timestr.
set(
'%02d:%02d.%01d'
%(minutes, seconds, mseconds)
) # 更新時間
def _update
(self)
: self._passtime = time.
time()
- self._start
self.
_settime
(self._passtime)
self.timer = self.
after
(100
, self._update) # 每 100ms 更新一次
# 開始
def begin
(self)
:if not self._isrunning:
self._start = time.
time()
- self._passtime
self.
_update()
self._isrunning = true
# 停止
def stop
(self)
:if self._isrunning:
self.
after_cancel
(self.timer)
self._passtime = time.
time()
- self._start
self.
_settime
(self._passtime)
self._isrunning = false
# 重設
def reset
(self)
:if not self._isrunning: # 設定只有在秒錶停止後 reset 才起作用
self._start = time.
time()
self._passtime =
0.0 self.
_settime
(self._passtime)
if __name__ ==
'__main__'
: def main()
:import tkinter
myclock =tk(
) clk =
clock()
width =
320 height =
96 screenwidth = myclock.
winfo_screenwidth()
screenheight = myclock.
winfo_screenheight()
alignstr =
'%dx%d+%d+%d'
%(width, height,
(screenwidth-width)/2
,(screenheight-height)/2
) myclock.
geometry
(alignstr)
myclock.
title
("my second chronograph"
) clk.
pack
(side=top)
b1 =
button
(myclock, text=
'start'
, command=clk.begin, bg=
"#82a6f5"
) b1.
pack
(fill=
"x", expand=
1, side=left)
b2 =
button
(myclock, text=
'stop'
, command=clk.stop, bg=
"#82a6f5"
) b2.
pack
(fill=
"x", expand=
1, side=left)
b3 =
button
(myclock, text=
'reset'
, command=clk.reset, bg=
"#82a6f5"
) b3.
pack
(fill=
"x", expand=
1, side=left)
b4 =
button
(myclock, text=
'quit'
, command=clk.quit, bg=
"#82a6f5"
) b4.
pack
(fill=
"x", expand=
1, side=left)
myclock.
mainloop()
main
()
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