[gnome-screenshot] screenshot: pack header bar buttons in a horiz size group

[Cosimo Cecchi <cosimoc src gnome org>]

commit f97df989778673c4eb98759352678453888e4e54
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Feb 16 09:04:02 2014 -0800

    screenshot: pack header bar buttons in a horiz size group

 src/screenshot-dialog.ui            |    8 ++++++++
 src/screenshot-interactive-dialog.c |    5 +++++
 2 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/src/screenshot-dialog.ui b/src/screenshot-dialog.ui
index f935031..9f184b7 100644
--- a/src/screenshot-dialog.ui
+++ b/src/screenshot-dialog.ui
@@ -159,4 +159,12 @@
       </object>
     </child>
   </object>
+  <object class="GtkSizeGroup" id="header_bar_size_group">
+    <property name="mode">horizontal</property>
+    <widgets>
+      <widget name="cancel_button"/>
+      <widget name="copy_button"/>
+      <widget name="save_button"/>
+    </widgets>
+  </object>
 </interface>
diff --git a/src/screenshot-interactive-dialog.c b/src/screenshot-interactive-dialog.c
index a55c41a..5197dea 100644
--- a/src/screenshot-interactive-dialog.c
+++ b/src/screenshot-interactive-dialog.c
@@ -482,6 +482,7 @@ screenshot_interactive_dialog_new (CaptureClickedCallback f, gpointer user_data)
       gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (button_box), button, TRUE);
     }
 
+  size_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 
   button = gtk_button_new_with_mnemonic (_("Take _Screenshot"));
   gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
@@ -492,6 +493,7 @@ screenshot_interactive_dialog_new (CaptureClickedCallback f, gpointer user_data)
   data->callback = f;
   data->user_data = user_data;
   g_signal_connect (button, "clicked", G_CALLBACK (capure_button_clicked_cb), data);
+  gtk_size_group_add_widget (size_group, button);
   gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), button);
   gtk_widget_set_can_default (button, TRUE);
   gtk_widget_grab_default (button);
@@ -501,10 +503,13 @@ screenshot_interactive_dialog_new (CaptureClickedCallback f, gpointer user_data)
 
   button = gtk_button_new_with_mnemonic (_("_Cancel"));
   gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
+  gtk_size_group_add_widget (size_group, button);
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar), button);
   g_signal_connect_swapped (button, "clicked",
                             G_CALLBACK (gtk_widget_destroy), dialog);
 
+  g_object_unref (size_group);
+
   gtk_widget_show_all (dialog);
 
   return dialog;