Merge lp:~andrea.corbellini/a4/close-file into lp:a4

[Andrea Corbellini]

Add a 'Close' button to the main window.

This is just a trivial change. I've added a 'Close' button to the main window.

[Andrea Colangelo (warp10)]

review: Approve

=== modified file 'a4lib/app.py'
--- a4lib/app.py	2010-05-27 14:23:58 +0000
+++ a4lib/app.py	2010-05-28 13:09:30 +0000
@@ -12,15 +12,14 @@
     """The main window of the application."""
 
     def __init__(self):
-        self.svg_image = None
         self.builder = gtk.Builder()
         # TODO Look into '/usr/share' too.
         self.builder.add_from_file('ui/window_main.glade')
         self.builder.connect_signals(self)
-
         self.gtk_window = self.builder.get_object('window_main')
         self.gtk_window.show_all()
         self.drawing_area = self.builder.get_object('drawing_area').window
+        self.reset()
 
     def set_status(self, status):
         """Put the given string in the status bar."""
@@ -44,13 +43,30 @@
             dialog.destroy()
         else:
             # The file was OK. Set up the environment.
-            widget = self.builder.get_object('drawing_area')
-            widget.set_size_request(image.width + 20, image.height + 20)
             self.svg_image = image
+            area = self.builder.get_object('drawing_area')
+            area.set_size_request(image.width + 20, image.height + 20)
+            # Make the 'Close' button sensitive.
+            menu_item = self.builder.get_object('imagemenuitem_close')
+            menu_item.props.sensitive = True
         finally:
             # Restore the status string.
             self.set_status('')
 
+    def reset(self):
+        """Reset the environment and put the window into its original state.
+
+        This function closes the file (if opened) and resets all the buttons
+        and the menus.
+        """
+        # Destroy the image object and reset the drawing area's size.
+        self.svg_image = None
+        area = self.builder.get_object('drawing_area')
+        area.set_size_request(0, 0)
+        # Make the 'Close' button insensitive.
+        menu_item = self.builder.get_object('imagemenuitem_close')
+        menu_item.props.sensitive = False
+
     def on_open_clicked(self, widget):
         """Even called when the 'Open' button is clicked."""
         # Set up the file chooser dialog.
@@ -74,6 +90,10 @@
         if response == gtk.RESPONSE_OK:
             self.open_file(file_name)
 
+    def on_close_clicked(self, widget):
+        """The 'Close' button has been clicked."""
+        self.reset()
+
     def on_drawing_area_expose(self, widget, event):
         """This method is called everytime the drawing area should be redrawn.
         """
 
=== modified file 'ui/window_main.glade'
--- ui/window_main.glade	2010-05-27 14:23:58 +0000
+++ ui/window_main.glade	2010-05-28 13:09:30 +0000
@@ -35,6 +35,14 @@
                       </object>
                     </child>
                     <child>
+                      <object class="GtkImageMenuItem" id="imagemenuitem_close">
+                        <property name="label">gtk-close</property>
+                        <property name="visible">True</property>
+                        <property name="use_stock">True</property>
+                        <signal name="activate" handler="on_close_clicked"/>
+                      </object>
+                    </child>
+                    <child>
                       <object class="GtkImageMenuItem" id="imagemenuitem_quit">
                         <property name="label">gtk-quit</property>
                         <property name="visible">True</property>