Question

我试图用Tkinter制作幻灯片，但我在调整图像大小时遇到了问题。它们只显示为默认大小，而我希望它们都是统一的。我可以使用Image.open为单个图像执行此操作并调整大小，但我无法理解如何使其在迭代中工作。我很感激帮助：

import Tkinter as tk
from PIL import Image, ImageTk
from itertools import cycle

class App(tk.Tk):
    def __init__(self, image_files, x, y, delay):
        tk.Tk.__init__(self)
        self.geometry('+{}+{}'.format(x,y))
        self.delay = delay
        self.pictures = cycle((ImageTk.PhotoImage(file=image), image) for image in image_files)
        self.pictures = self.pictures
        self.picture_display = tk.Label(self)
        self.picture_display.pack()
    def show_slides(self):
        img_object, img_name = next(self.pictures)
        self.picture_display.config(image=img_object)
        self.title(img_name)
        self.after(self.delay, self.show_slides)
    def run(self):
        self.mainloop()
delay = 3500

image_files = [
'c:/users/xxx/pictures/47487_10100692997065139_1074926086_n.jpg',
'E:\\1415\\20141216_105336.jpg'
]

x = 100
y = 50
app = App(image_files,x,y,delay)
app.show_slides()
app.run()

Answer 1

你很亲密，但还没到那里。因此，我更改了您的示例以使其工作：

import Tkinter as tk
from PIL import Image, ImageTk
from itertools import cycle

class App(tk.Tk):

    def __init__(self, image_files, x, y, delay):
        tk.Tk.__init__(self)
        self.geometry('+{}+{}'.format(x,y))
        self.delay = delay
        #self.pictures = cycle((ImageTk.PhotoImage(file=image), image) for image in image_files)
        self.pictures = cycle(image for image in image_files)        
        self.pictures = self.pictures
        self.picture_display = tk.Label(self)
        self.picture_display.pack()
        self.images = [] # to keep references to images.

    def show_slides(self):        
        img_name = next(self.pictures)
        image_pil = Image.open(img_name).resize((300, 300)) #<-- resize images here

        self.images.append(ImageTk.PhotoImage(image_pil))      

        self.picture_display.config(image=self.images[-1])
        self.title(img_name)
        self.after(self.delay, self.show_slides)

    def run(self):
        self.mainloop()

delay = 3500

image_files = [
            './empty.gif',
            './empty2.gif',
            './empty1.gif'
        ]

x = 200
y = 150
app = App(image_files,x,y,delay)
app.show_slides()
app.run()

基本上，在创建ImageTk.PhotoImage的实例之前，必须使用PIL图像完成图像大小调整。在两个关键点我在示例中做了评论，因此您知道在哪里寻找。希望这会有所帮助。

使用Tkinter / Python使用ImageTk.PhotoImage调整图像大小

1 个答案: