~xubuntu-dev/ubiquity/lp1437180_feh

#!/usr/bin/python3

'''

Helper program to draw a background image on each screen of the system.

'''

import sys

from PyQt4.QtCore import Qt

from PyQt4 import QtGui

def die(msg):

    print(msg, file=sys.stderr)

    sys.exit(1)

def create_window(wallpaper, geometry):

    win = QtGui.QWidget()

    wallpaper = wallpaper.scaled(geometry.size(),

                                 Qt.KeepAspectRatioByExpanding,

                                 Qt.SmoothTransformation)

    palette = QtGui.QPalette()

    palette.setBrush(win.backgroundRole(), QtGui.QBrush(wallpaper))

    win.setPalette(palette)

    win.setAttribute(Qt.WA_X11NetWmWindowTypeDesktop)

    win.setGeometry(geometry)

    win.show()

    return win

def main():

    if len(sys.argv) != 2:

        die('usage: {} <path/to/wallpaper.png>'.format(sys.argv[0]))

    path = sys.argv[1]

    app = QtGui.QApplication(sys.argv)

    wallpaper = QtGui.QPixmap(path)

    if wallpaper.isNull():

        die('Failed to load {}'.format(path))

    desktop = app.desktop()

    # Keep a trace of the windows to ensure they are not garbage collected

    windows = []

    for idx in range(desktop.screenCount()):

        geometry = desktop.screenGeometry(idx)

        win = create_window(wallpaper, geometry)

        windows.append(win)

    return app.exec_()

if __name__ == '__main__':

    main()