r687@erker: lars | 2010-02-18 23:08:01 +0100

 make the GTK interface the default (TkInter can be selected via "--tk")
 fall back to the alternative, if the first choice is unavailable


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@145 bbaffbd6-741e-11dd-a85d-61de82d9cad9

pycam.py

@@ -13,8 +13,11 @@ if __name__ == "__main__":
             action="store_true", default=False,
             help="don't create the outputfile on the fly - just preset the output filename and show the GUI")
     parser.add_option("", "--gtk", dest="gtk_gui",
-            action="store_true", default=False,
-            help="use the new GTK interface")
+            action="store_true", default=True,
+            help="use the new GTK interface (default)")
+    parser.add_option("", "--tk", dest="gtk_gui",
+            action="store_false",
+            help="use the (old) Tk interface")
     (options, args) = parser.parse_args()
 
     if len(args) > 0:
@@ -24,20 +27,37 @@ if __name__ == "__main__":
     if len(args) > 2:
         parser.error("too many arguments given (%d instead of %d)" % (len(args), 2))
 
+    # try the configured interface first and then try to fall back to the alternative, if necessary
     if options.gtk_gui:
         try:
             from pycam.Gui.Project import ProjectGui
+            gui = ProjectGui()
         except ImportError, err_msg:
-            print sys.stderr, "Failed to load GTK bindings for python. Please install the package 'python-gtk2'."
-            print sys.stderr, "Details: %s" % str(err_msg)
-        gui = ProjectGui()
+            print >> sys.stderr, "Failed to load GTK bindings for python. Please install the package 'python-gtk2'."
+            print >> sys.stderr, "Details: %s" % str(err_msg)
+            print >> sys.stderr, "I will try to use the alternative Tk interface now ..."
+            try:
+                from pycam.Gui.SimpleGui import SimpleGui
+                gui = SimpleGui()
+            except ImportError:
+                gui = None
     else:
         try:
             from pycam.Gui.SimpleGui import SimpleGui
+            gui = SimpleGui()
         except ImportError, err_msg:
-            print sys.stderr, "Failed to load TkInter bindings for python. Please install the package 'python-tk'."
-            print sys.stderr, "Details: %s" % str(err_msg)
-        gui = SimpleGui()
+            print >> sys.stderr, "Failed to load TkInter bindings for python. Please install the package 'python-tk'."
+            print >> sys.stderr, "Details: %s" % str(err_msg)
+            print >> sys.stderr, "I will try to use the alternative GTK interface now ..."
+            try:
+                from pycam.Gui.Project import ProjectGui
+                gui = ProjectGui()
+            except ImportError:
+                gui = None
+    # exit if no interface is found
+    if gui is None:
+        print >> sys.stderr, "Neither the GTK nor the Tk interface is available. Please install the corresponding packages!"
+        sys.exit(1)
 
     if not inputfile:
         from pycam.Importers.TestModel import TestModel