Python利用tkinter设计手表指针运动，列表框的添加、删除
参数说明：
c_pntr: 表盘的中心坐标；
long_pntr: 表针长；
cvns: 画布引用；
scale: 指针行走比例；
super_pntr: 上级指针；
width: 指针粗细；
fill: 指针颜色；
import time,datetime
import math
import itertools
import tkinter
import threading
def get_clock_step(base_pntr,long_pntr):
pos = []
for i in range(60):
pos.append((base_pntr[0]+long_pntr*math.cos(i*math.pi/30),
base_pntr[0]+long_pntr*math.sin(i*math.pi/30)))
return pos[45:] + pos[:45]
def gen_i_pos(c_pntr,long_pntr):
for i,p in enumerate(get_clock_step(c_pntr,long_pntr)):
yield i,p
class Pointer:
def __init__(self,c_pntr,long_pntr,cvns,scale=None,super_pntr=None,width=1,fill='black'):
self.pos_iter = itertools.cycle(gen_i_pos(c_pntr,long_pntr))
self.scale = scale
self.cvns = cvns
self.crrnt_pos = self.pos_iter.__next__()[1]
self.c_pntr = c_pntr
self.super_pntr = super_pntr
self.id_pntr = None
self.width = width
self.fill = fill
def draw(self):
self.id_pntr = cvns.create_line(self.c_pntr,self.crrnt_pos,width=self.width,fill=self.fill)
def walk_step(self):
self.delete()
self.draw()
i,self.crrnt_pos = self.pos_iter.__next__()
if self.super_pntr and self.scale and (i + 1) % self.scale == 0:
self.super_pntr.walk_step()
def delete(self):
if self.id_pntr:
self.cvns.delete(self.id_pntr)
def set_start(self,steps):
for i in range(steps-1):
self.pos_iter.__next__()
self.crrnt_pos = self.pos_iter.__next__()[1]
class PlateImg:
def __init__(self,c_pntr,clock_r,cvns,img):
self.cvns = cvns
self.clock_r = clock_r
self.c_pntr = c_pntr
self.img = img
self.pid = None
self.draw()
def draw(self):
self.im = tkinter.PhotoImage(file=self.img)
self.pid = self.cvns.create_image(self.c_pntr,image = self.im)
def delete(self):
if self.pid:
self.cvns.delete(self.pid)
def set_img(self,img):
self.img = img
self.delete()
self.draw()
class InImg(PlateImg):
def draw(self):
x = self.c_pntr[0]
y = self.c_pntr[0] + self.clock_r / 5
self.im = tkinter.PhotoImage(file=self.img)
self.pid = self.cvns.create_image(x,y,image = self.im)
class CustomPlate:
def __init__(self,c_pntr,clock_r,cvns,imgp='platex.gif',imgi='flowersx.gif'):
self.pi = PlateImg(c_pntr,clock_r,cvns,imgp)
self.ii = InImg(c_pntr,clock_r,cvns,imgi)
def set_img(self,imgp,imgi):
self.pi.set_img(imgp)
self.ii.set_img(imgi)
def delete(self):
self.pi.delete()
self.ii.delete()
class Plate:
def __init__(self,c_pntr,clock_r,cvns,long=10):
self.pos_a = get_clock_step(c_pntr,clock_r - long)
self.pos_b = get_clock_step(c_pntr,clock_r)
self.cvns = cvns
self.plates = []
self.draw()
def draw(self):
for i,p in enumerate(zip(self.pos_a,self.pos_b)):
width = 5 if (i + 1) % 5 == 0 else 3
pid = self.cvns.create_line(*p,width=width)
self.plates.append(pid)
def delete(self):
if self.plates:
for item in self.plates:
self.cvns.delete(item)
class MyClock:
def __init__(self,base_pntr,clock_r,cvns):
self.c_pntr = base_pntr
self.clock_r = clock_r
self.cvns = cvns
self.plate = Plate(base_pntr,clock_r,self.cvns)
h,m,s = self.start_time()
self.h_pntr = Pointer(base_pntr,3 * clock_r // 5,self.cvns,width=5,fill='blue')
self.m_pntr = Pointer(base_pntr,4 * clock_r // 5,self.cvns,12,super_pntr=self.h_pntr,width=3,fill='green')
self.h_pntr.set_start(h * 5)
self.m_pntr.set_start(m)
self.h_pntr.walk_step()
self.m_pntr.walk_step()
self.s_pntr = Pointer(base_pntr,clock_r-5,self.cvns,60,super_pntr=self.m_pntr,fill='red')
self.s_pntr.set_start(s)
def chg_plate(self):
self.plate.delete()
if isinstance(self.plate,CustomPlate):
self.plate = Plate(self.c_pntr,self.clock_r,self.cvns)
else:
self.plate = CustomPlate(self.c_pntr,self.clock_r,self.cvns)
self.h_pntr.delete()
self.h_pntr.draw()
self.m_pntr.delete()
self.m_pntr.draw()
def set_img(self,imgp,imgi):
if not isinstance(self.plate,CustomPlate):
self.chg_plate()
self.plate.set_img(imgp,imgi)
def walk_step(self):
self.s_pntr.walk_step()
def start_time(self):
crrnt_time = datetime.datetime.now()
hour = crrnt_time.hour
minute = crrnt_time.minute
second = crrnt_time.second
return hour,minute,second
class MyButton:
def __init__(self,root,clock):
self.clock = clock
button = tkinter.Button(root,text = '改变表盘',command = self.chg_plate)
button.pack()
def chg_plate(self):
self.clock.chg_plate()
class MyTk(tkinter.Tk):
def quit(self):
StartClock.looping = False
self.quit()
class StartClock:
looping = True
def __init__(self,mc,root):
self.mc = mc
self.root = root
def start_clock(self):
while StartClock.looping:
self.mc.walk_step()
self.root.update()
time.sleep(0.05)
if __name__ == '__main__':
root = MyTk()
cvns = tkinter.Canvas(root,width=400,height=400,bg='white')
cvns.pack()
mc = MyClock((200,200),200,cvns)
bt = MyButton(root,mc)
t = threading.Thread(target=StartClock(mc,root).start_clock)
t.setDaemon(True)
t.start()
root.resizable(False, False)
root.mainloop()
利用tkinter制作列表框，添加和删除
import tkinter
yao=tkinter.Tk()
yao.title("请列出你最爱吃的水果")
yao.geometry("366x350")
Label1=tkinter.Label(yao,text="请列出你最爱吃的水果",font=("Arial 15 bold"),pady=10)
Label1.place(x=66,y=6)
sb=tkinter.Scrollbar(yao)
sb.grid(row=0,column=2,rowspan=4,padx=(0,110),pady=50,sticky=tkinter.NS)
n=["苹果","柚子","草莓","芒果","西瓜","香蕉","菠萝","火龙果","榴莲","车厘子"]
listbox=tkinter.Listbox(yao,width=30,height=12,selectmode=tkinter.MULTIPLE,yscrollcommand=sb.set)
listbox.grid(row=0,column=1,rowspan=4,padx=(68,0),pady=50,sticky=tkinter.E)
sb.config(command=listbox.yview)
for i in range(1,len(n)+1):
listbox.insert(i,n[i-1])
def pa(event):
i=listbox.size()
p=tex1.get()
w=listbox.get(0,i)
if (p.strip()!="") and (p not in w):
listbox.insert(i+1,p)
s.set("")
def pb(event):
a=listbox.curselection()
if len(a)>=1:
b=len(a)-1
for t in range(b,-1,-1):
listbox.delete(a[t])
else:
listbox.delete(tkinter.ANCHOR)
s=tkinter.StringVar()
tex1=tkinter.Entry(yao,textvariable=s,width=16)
tex1.place(x=68,y=280)
bt1=tkinter.Button(yao,text="添加")
bt1.place(x=192,y=276)
bt1.bind("<ButtonPress>",pa)
bt2=tkinter.Button(yao,text="删除")
bt2.place(x=238,y=276)
bt2.bind("<ButtonPress>",pb)
yao.mainloop()