python - 如何在 PyQt 的窗口上加载位图

Question

我目前有一个 PIL 图像，我想在 PyQt 窗口上显示。我知道这一定很容易，但我无法在任何地方找到如何去做。谁能帮我解决这个问题？这是我当前拥有的窗口的代码:

import sys
from PyQt4 import QtGui

class Window(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Window')


app = QtGui.QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())

编辑:根据 Rapid Gui Programming with Qt and Python:

According to PyQt’s documentation, QPixmaps are optimized for on-screen display (so they are fast to draw), and QImages are optimized for editing (which is why we have used them to hold the image data).

我有一个复杂的算法可以生成我想在我的窗口上显示的图片。它们的创建速度非常快，因此对于用户来说，它们看起来就像一个动画(每秒可能有 15+、20+ 个)。我应该使用 QPixmaps 还是 QImages？

Answer 1

尝试这样的事情，你可以使用http://svn.effbot.org/public/stuff/sandbox/pil/ImageQt.py将任何 pil 图像转换为 qimage

import sys
from PyQt4 import QtGui
from PIL import Image

def get_pil_image(w, h):
    clr = chr(0)+chr(255)+chr(0)
    im = Image.fromstring("RGB", (w,h), clr*(w*h))
    return im

def pil2qpixmap(pil_image):
    w, h = pil_image.size
    data = pil_image.tostring("raw", "BGRX")
    qimage = QtGui.QImage(data, w, h, QtGui.QImage.Format_RGB32)
    qpixmap = QtGui.QPixmap(w,h)
    pix = QtGui.QPixmap.fromImage(qimage)
    return pix

class ImageLabel(QtGui.QLabel):
    def __init__(self, parent=None):
        QtGui.QLabel.__init__(self, parent)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Window')

        self.pix = pil2qpixmap(get_pil_image(50,50))
        self.setPixmap(self.pix)

app = QtGui.QApplication(sys.argv)
imageLabel = ImageLabel()
imageLabel.show()
sys.exit(app.exec_())