PySide6将ImageQt转换为QPixmap

Question

我正在将旧的Python 2.7代码转换为Python 3，并在最后一行得到以下错误：

ar = imgArray*255
ar = numpy.clip(ar, 0, 255, out=ar)
img = Image.fromarray(ar.astype("uint8"))
qim = ImageQt.ImageQt(img)   
pm = QtGui.QPixmap.fromImage(qim)


TypeError: 'PySide6.QtGui.QPixmap.fromImage' called with wrong argument types:
  PySide6.QtGui.QPixmap.fromImage(ImageQt)

因此，问题是:如何从PySide6中的ImageQt对象获取QPixmap？

Answer 1

Pil.ImageQt根据是否导入了库来决定后端，如果导入了库，则它将使用该库，否则将存在内部顺序(此时为PyQt6、PySide6、PyQt5、PySide2 )。因此，为了避免这些问题，您必须先导入PySide6，然后导入PIL。

import PySide6
from PySide6 import QtCore, QtGui

import PIL
from PIL import Image, ImageQt

import numpy as np

print(
    f"Tested with:\n- PIL version: {PIL.__version__},\n- PySide6 version: {PySide6.__version__},\n- Qt Version: {QtCore.qVersion()}\n- Numpy version: {np.__version__}"
)

app = QtGui.QGuiApplication()

ar = np.random.randint(255, size=(900, 800, 3), dtype=np.uint8)
img = Image.fromarray(ar.astype(np.uint8))
qim = ImageQt.ImageQt(img)
pm = QtGui.QPixmap.fromImage(qim)
assert not pm.isNull()

输出：

Tested with:
- PIL version: 8.3.1,
- PySide6 version: 6.1.2,
- Qt Version: 6.1.2
- Numpy version: 1.21.2