gokien_welcome.py

#!/usr/bin/env python

import sys
import os
from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtWebKit import QWebView
import string as String
import xdg.IconTheme
import logging
from gi.repository import Gio

ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
HTML_DIR = os.path.join(ROOT_DIR, 'templates/')  # Don't forget the last slash
HTML_PATH = os.path.join(ROOT_DIR, 'templates/welcome.html')


def _(string):
    """
        Placeholder for GNU gettext
    """
    return string


class WelcomeSreen(QWebView):
    def __init__(self, app, width, height):
        QWebView.__init__(self)
        self.app = app
        self._html = self._parse_html(HTML_PATH)
        self.setHtml(self._html, baseUrl=QUrl('file://' + HTML_DIR))
        self.setFixedSize(width, height)
        # Move to the center
        screen_geometry = app.desktop().screenGeometry()
        self.move((screen_geometry.width() - width) / 2,
                 (screen_geometry.height() - height) / 2)
        # Remove the border
        self.setWindowFlags(Qt.FramelessWindowHint)

        # Handle event titleChanged
        self.titleChanged.connect(self._title_changed)

    def _parse_html(self, file_path):
        """
            Parse the template file and return the resultant content
        """
        subs = {
            "title": _('Welcome to GokienOS'),
            "show": _('Open this dialog in the next startup'),
            "close": _('Close'),
            "working": _('Working'),
            "document": _('Document'),
            "spreadsheet": _('Spreadsheet'),
            "presentation": _('Presentation'),
            "networking": _('Networking'),
            "web_browser": _('Web Browser'),
            "chat": _('Chat'),
            "extra": _('Extra'),
            "help": _('Help')
        }

        apps = [
            'firefox',
            'empathy',
            'libreoffice-writer',
            "libreoffice-writer",
            "libreoffice-calc",
            "libreoffice-impress",
            "help"
        ]
        s = Gio.Settings.new('org.gnome.desktop.interface')
        theme = s.get_string('icon-theme')
        for app in apps:
            # TODO Determine current theme  
            subs['icon_' + app.replace('-', '_')] = \
                xdg.IconTheme.getIconPath(app, theme=theme)

        template = open(file_path, 'r').read()
        html = String.Template(template).safe_substitute(subs)

        logging.debug(html)
        return html

    def _title_changed(self, title):
        """
            Handle the signal titleChanged
        """
        if title == 'close':
            self.app.exit()
        else:
            os.system(title)
        print(title)


def main(sys_argv):
    logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)
    app = QApplication(sys_argv)
    gokien_welcome_screen = WelcomeSreen(app, 654, 350)
    gokien_welcome_screen.show()
    app.exec_()

if __name__ == '__main__':
    main(sys.argv)