X-Git-Url: https://git.ralfj.de/lilass.git/blobdiff_plain/d45277d71a662b4174c9173922368d00cfbefa94..f9da06538394990906d6148d7cbc2dad7a7967c7:/gui.py

diff --git a/gui.py b/gui.py
index edb9b2b..83099e8 100644
--- a/gui.py
+++ b/gui.py
@@ -12,14 +12,32 @@
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with this program (gpl.txt); if not, write to the Free Software
+# along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-# This file bstracts GUI stuff away, so that the actual dsl.py does not have to deal with it
+# This file abstracts GUI stuff away, so that the actual dsl.py does not have to deal with it
 import sys
-from PyQt4 import QtGui
-app = QtGui.QApplication(sys.argv)
+
+qt_available = True
+try:
+	from PyQt4 import QtGui
+	from qt_dialogue import PositionSelection
+	app = QtGui.QApplication(sys.argv)
+except Exception, e:
+	import subprocess
+	from zenity_dialogue import run as zenity_run
+	qt_available = False
 
 def error(message):
-	QtGui.QMessageBox.critical(None, 'Fatal error', message)
-	raise Exception(message)
+	'''Displays a fatal error to the user'''
+	if qt_available:
+		QtGui.QMessageBox.critical(None, 'Fatal error', message)
+	else:
+		subprocess.check_call(["zenity", "--error", "--text="+message])
+
+def setup(internalResolutions, externalResolutions):
+	'''Returns a ScreenSetup instance, or None if the user canceled'''
+	if qt_available:
+		return PositionSelection(internalResolutions, externalResolutions).run()
+	else:
+		return zenity_run(internalResolutions, externalResolutions)