使用 PySimpleGUI 显示图像而无需使用事件侦听器

Question

我正在尝试使用 PySimpleGUI 在 GUI 中显示图像。我知道我可以在设置 GUI 本身时执行 sg.Image('image_file') ，但我也想调整图像大小。我不知道该怎么做。我尝试过执行 sg.Image(size=(300,300),'image_file') 但这不起作用。提前致谢。

Answer 1

调整大小和加载的步骤sg.Image

• 使用以下命令将 PNG 文件大小调整为 (300, 300)PIL.Image
• 将图像转换为PIL.ImageTk.PhotoImage窗口完成后的图像
• 更新图像在sg.Image

from PIL import Image, ImageTk
from urllib import request
import PySimpleGUI as sg

# Get one PNG file from website and save to file
url = (
    "https://raw.githubusercontent.com/PySimpleGUI/PySimpleGUI/master/"
    "images/for_readme/Logo%20with%20text%20for%20GitHub%20Top.png")
headers = {
    'User-Agent': (
        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 '
        '(KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36')}
req = request.Request(url, headers=headers)
response = request.urlopen(req)
if response.status != 200:
    print("Failed to load image from website !")
    exit()
data = response.read()

filename = "example.png"
with open(filename, "wb") as f:
    f.write(data)

# Resize PNG file to size (300, 300)
size = (300, 300)
im = Image.open(filename)
im = im.resize(size, resample=Image.BICUBIC)

sg.theme('DarkGreen3')

layout = [
    [sg.Image(size=(300, 300), key='-IMAGE-')],
]
window = sg.Window('Window Title', layout, margins=(0, 0), finalize=True)

# Convert im to ImageTk.PhotoImage after window finalized
image = ImageTk.PhotoImage(image=im)

# update image in sg.Image
window['-IMAGE-'].update(data=image)

while True:

    event, values = window.read()
    if event == sg.WIN_CLOSED:
        break

window.close()