mdiarea_pixmap.py

#!/usr/bin/env python

import sys
from PyQt4.QtCore import Qt
from PyQt4.QtGui import *

class MDIArea(QMdiArea):

    def __init__(self, background_pixmap, parent = None):

        QMdiArea.__init__(self, parent)
        self.background_pixmap = background_pixmap
        self.centered = False

    def paintEvent(self, event):

        painter = QPainter()
        painter.begin(self.viewport())

        if not self.centered:
            painter.drawPixmap(0, 0, self.width(), self.height(), self.background_pixmap)
        else:
            painter.fillRect(event.rect(), self.palette().color(QPalette.Window))
            x = (self.width() - self.display_pixmap.width())/2
            y = (self.height() - self.display_pixmap.height())/2
            painter.drawPixmap(x, y, self.display_pixmap)

        painter.end()

    def resizeEvent(self, event):

        self.display_pixmap = self.background_pixmap.scaled(event.size(), Qt.KeepAspectRatio)


if __name__ == "__main__":

    app = QApplication(sys.argv)

    
    m = MDIArea(QPixmap("Death_Valley_Dunes.jpg"))
    m.centered = True
    m.show()
    sys.exit(app.exec_())