我一直在关注这个Tkinter的介绍教程。
链接。https:/www.youtube.comwatch?v=YXPyB4XeYLA
目前正在看图片查看器的应用教程。
视频中的家伙使用了大量的全局变量,我知道这有点不妥,所以我也做了同样的事情,但用类和类方法代替。它的工作,这是伟大的,但我不禁觉得它是不必要的意大利面条一样,一个更简单的方法可能是可能的?
注:我把我使用的真实目录替换为 imagedirectory
from tkinter import *
from PIL import ImageTk, Image
import os
root = Tk()
class mylabel:
def __init__(self):
self.rty = ""
self.imagedict = {}
self.iNum = 0
def removeself(self):
self.rty.grid_forget()
def makeyoself(self, imagenum):
self.rty = Label(root, image=self.imagedict["image" + str(imagenum)])
self.rty.image = self.imagedict["image" + str(imagenum)]
self.rty.grid(row=0, column=1, columnspan=5)
def gettheimages(self):
os.chdir('imagedirectory')
for a, b, c in os.walk('imagedirectory'):
for imgs in range(len(c)):
self.imagedict["image" + str(imgs)] = ImageTk.PhotoImage(Image.open(c[imgs]))
class buttonclass:
def __init__(self, inrelationto):
self.but = ""
self.inrelationto = inrelationto
self.notme = ""
def makeforwarden(self):
self.but = Button(root, text=">>", command = self.forward)
self.but.grid(row=1,column=6)
def makeforwarddis(self):
self.but = Button(root, text=">>", command = self.forward, state=DISABLED)
self.but.grid(row=1,column=6)
def makebackwarden(self):
self.but = Button(root, text="<<", command = self.backward)
self.but.grid(row=1,column=0)
def makebackwarddis(self):
self.but = Button(root, text="<<", command = self.backward, state=DISABLED)
self.but.grid(row=1,column=0)
def removebut(self):
self.but.grid_forget()
def forward(self):
if self.inrelationto.iNum < len(self.inrelationto.imagedict) -1:
self.inrelationto.removeself()
self.inrelationto.makeyoself(self.inrelationto.iNum +1)
if self.inrelationto.iNum == 0:
self.notme.removebut()
self.notme.makebackwarden()
if self.inrelationto.iNum == len(self.inrelationto.imagedict) -2:
self.removebut()
self.makeforwarddis()
self.inrelationto.iNum += 1
def backward(self):
if self.inrelationto.iNum > 0:
self.inrelationto.removeself()
self.inrelationto.makeyoself(self.inrelationto.iNum - 1)
if self.inrelationto.iNum == 1:
self.removebut()
self.makebackwarddis()
if self.inrelationto.iNum == len(self.inrelationto.imagedict) - 1:
self.notme.removebut()
self.notme.makeforwarden()
self.inrelationto.iNum -=1
def setup():
pictureviewer = mylabel()
buttonforward = buttonclass(pictureviewer)
buttonbackward = buttonclass(pictureviewer)
buttonforward.notme = buttonbackward
buttonbackward.notme = buttonforward
pictureviewer.gettheimages()
pictureviewer.makeyoself(0)
buttonforward.makeforwarden()
buttonbackward.makebackwarddis()
if __name__ == '__main__':
setup()
root.mainloop()
我想说,globals对于一个小程序来说是可以的。另外你的OOP代码看起来有点意淫的原因是你这样写的。思考如何用对象最好地构造一个应用程序是一种习得的技能,你必须研究一堆例子才能掌握它的窍门。所以,这里有一个例子,说明你可以如何构造应用程序。
from tkinter import *
from PIL import ImageTk, Image
import os
class viewer(Frame):
def __init__(self, master):
super().__init__()
# Create image list
self.image_list = []
cwd = r'C:\Users\qwerty\Documents\Python\images'
for path, dirs, files in os.walk(cwd):
for file in files:
full_name = os.path.join(path, file)
self.image_list.append(ImageTk.PhotoImage(Image.open(full_name)))
# Create GUI
self.image_index = 0
self.picture = Label(self, image=self.image_list[self.image_index])
self.picture.pack()
button_frame = Frame(self)
button_frame.pack(expand=True, fill='x')
self.buttonforward = Button(button_frame, text='>>', command=self.forward)
self.buttonforward.pack(side='right')
self.buttonbackward = Button(button_frame, text='<<', command=self.backward)
self.buttonbackward.pack(side='left')
self.buttonbackward.config(state='disabled')
def forward(self):
self.image_index = self.image_index + 1
if self.image_index == len(self.image_list) - 1:
self.buttonforward.config(state='disabled')
self.buttonbackward.config(state='normal')
self.picture.config(image=self.image_list[self.image_index])
def backward(self):
self.image_index = self.image_index - 1
if self.image_index == 0:
self.buttonbackward.config(state='disabled')
self.buttonforward.config(state='normal')
self.picture.config(image=self.image_list[self.image_index])
if __name__ == '__main__':
root = Tk()
z = viewer(root)
z.pack()
root.mainloop()
这里是一个学习的好地方: 构建一个tkinter应用程序的最佳方式?