[meld] Add fullscreen option as recommended by HIG (closes bgo#157982)

[Kai Willadsen <kaiw src gnome org>]

commit 729d214916f2ec8cf0ef65905a305518ef6228ed
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Wed May 13 10:03:15 2009 +1000

    Add fullscreen option as recommended by HIG (closes bgo#157982)
    
    The GNOME HIG recommends that applications should provide a "Full Screen"
    option, and since Meld uses side-by-side comparison, allowing users to
    utilise their whole screen seems sensible. This fixes the final part of
    bgo#157982, which asks for HIG-recommended menu items.
---
 glade2/meldapp-ui.xml |    2 ++
 meldapp.py            |    8 ++++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/glade2/meldapp-ui.xml b/glade2/meldapp-ui.xml
index b49a2d5..1f55780 100644
--- a/glade2/meldapp-ui.xml
+++ b/glade2/meldapp-ui.xml
@@ -28,6 +28,8 @@
     <menu action="ViewMenu">
       <menuitem action="ToolbarVisible" />
       <menuitem action="StatusbarVisible" />
+      <menuitem action="Fullscreen" />
+      <separator/>
       <placeholder name="ViewPlaceholder" />
       <menu action="FileStatus" />
       <menu action="VcStatus" />
diff --git a/meldapp.py b/meldapp.py
index aff2536..776c926 100644
--- a/meldapp.py
+++ b/meldapp.py
@@ -542,6 +542,7 @@ class MeldApp(gnomeglade.Component):
             ("Magic",       gtk.STOCK_YES,   None,     None, None, self.on_menu_magic_activate),
         )
         toggleactions = (
+            ("Fullscreen",       None, _("Full Screen"), "F11", _("View the comparison in full screen"), self.on_action_fullscreen_toggled, False),
             ("ToolbarVisible",   None, _("_Toolbar"),   None, _("Show or hide the toolbar"),   self.on_menu_toolbar_toggled,   True),
             ("StatusbarVisible", None, _("_Statusbar"), None, _("Show or hide the statusbar"), self.on_menu_statusbar_toggled, True)
         )
@@ -788,6 +789,13 @@ class MeldApp(gnomeglade.Component):
     def on_menu_preferences_activate(self, item):
         PreferencesDialog(self)
 
+    def on_action_fullscreen_toggled(self, widget):
+        is_full = self.widget.window.get_state() & gtk.gdk.WINDOW_STATE_FULLSCREEN
+        if widget.get_active() and not is_full:
+            self.widget.fullscreen()
+        elif is_full:
+            self.widget.unfullscreen()
+
     def on_menu_toolbar_toggled(self, widget):
         self.prefs.toolbar_visible = widget.get_active()
         self.toolbar.props.visible = widget.get_active()