--- ibus-1.4.99.20120317/ui/gtk3/switcher.vala.orig	2012-04-25 18:58:37.209092997 +0900
+++ ibus-1.4.99.20120317/ui/gtk3/switcher.vala	2012-04-25 18:59:43.017227590 +0900
@@ -23,15 +23,20 @@
 using IBus;
 using GLib;
 using Gtk;
+using Pango;
+using Atk;
 
 class Switcher : Gtk.Window {
     private Gtk.Box m_box;
+    private Gtk.Label m_label;
     private Gtk.Button[] m_buttons = {};
     private IBus.EngineDesc[] m_engines;
     private uint m_selected_engine;
     private uint m_primary_modifier;
     private GLib.MainLoop m_loop;
     private int m_result;
+    private int m_default_font_size = 16;
+    private const int m_desc_label_max_len = 20;
 
     public Switcher() {
         GLib.Object(
@@ -43,8 +48,23 @@ class Switcher : Gtk.Window {
             modal : true,
             focus_visible : true
         );
-        m_box = new Gtk.Box(Gtk.Orientation.VERTICAL, 0);
-        add(m_box);
+        Gtk.Box vbox = new Gtk.Box(Gtk.Orientation.VERTICAL, 0);
+        add(vbox);
+        Gtk.Alignment align = new Gtk.Alignment(0.5f, 0.5f, 0.0f, 0.0f);
+        vbox.pack_start(align, true, true, 0);
+        m_box = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 0);
+        align.add(m_box);
+        m_label = new Gtk.Label("");
+
+        /* Set the accessible role of the label to a status bar so it
+         * will emit name changed events that can be used by screen
+         * readers.
+         */
+        Atk.Object obj = m_label.get_accessible();
+        obj.set_role (Atk.Role.STATUSBAR);
+
+        m_label.set_padding(3, 3);
+        vbox.pack_end(m_label, false, false, 0);
 
         grab_focus();
     }
@@ -138,6 +158,35 @@ class Switcher : Gtk.Window {
         return m_result;
     }
 
+    private Gtk.Button ime_button_new(IBus.EngineDesc engine) {
+        var language = engine.get_language();
+        var symbol = engine.get_symbol();
+        var id = language;
+
+        if (id.length > 2) {
+            id = id[0:2];
+        }
+        if (symbol.length != 0) {
+            id = symbol;
+        }
+
+        var button = new Gtk.Button();
+        Gtk.Alignment align = new Gtk.Alignment(0.5f, 0.5f, 0.0f, 0.0f);
+        button.add(align);
+        Gtk.Box box = new Gtk.Box(Gtk.Orientation.VERTICAL, 0);
+        align.add(box);
+
+        Gtk.Label label = new Gtk.Label(id);
+        string id_font = "%d".printf(m_default_font_size);
+        string markup = "<span font=\"%s\">%s</span>".printf(id_font, id);
+
+        label.set_markup(markup);
+        box.pack_start(label, false, false, 0);
+
+        return button;
+    }
+
+    /* Based on metacity/src/ui/tabpopup.c:meta_ui_tab_popup_new */
     private void update_engines(IBus.EngineDesc[] engines) {
         foreach (var button in m_buttons) {
             button.destroy();
@@ -149,28 +198,15 @@ class Switcher : Gtk.Window {
             return;
         }
 
-        int width, height;
-        Gtk.icon_size_lookup(Gtk.IconSize.MENU, out width, out height);
         m_engines = engines;
+        int max_label_width = 0;
+
         for (int i = 0; i < m_engines.length; i++) {
             var index = i;
             var engine = m_engines[i];
+            var button = ime_button_new(engine);
             var longname = engine.get_longname();
-            var language = engine.get_language();
-            var symbol = engine.get_symbol();
-            var id = language;
-
-            if (id.length > 2) {
-                id = id[0:2];
-            }
-            if (symbol.length != 0) {
-                id = symbol;
-            }
-            var label = "%-15s %s".printf(longname, id);
-            var button = new Gtk.Button.with_label(label);
-            button.set_image(new IconWidget(engine.get_icon(), width));
             button.set_relief(Gtk.ReliefStyle.NONE);
-            button.set_alignment(1.0f, 0.0f);
             button.show();
 
             button.enter_notify_event.connect((e) => {
@@ -186,12 +222,40 @@ class Switcher : Gtk.Window {
                 return true;
             });
 
+            if (longname.length > m_desc_label_max_len) {
+                longname = longname[0:m_desc_label_max_len];
+            }
+
+            button.set_data("longname", longname);
+            m_label.set_label(longname);
+
+            int width;
+            m_label.get_preferred_width(null, out width);
+            max_label_width = int.max(max_label_width, width);
+
             m_box.pack_start(button, true, true);
             m_buttons += button;
         }
 
-        // Cause window recalculate the perferred size.
-        resize(1, 1);
+        m_label.set_text(m_buttons[0].get_data("longname"));
+        m_label.set_ellipsize(Pango.EllipsizeMode.END);
+
+        Gdk.Display display = Gdk.Display.get_default();
+        Gdk.Screen screen = (display != null) ?
+                display.get_default_screen() : null;
+        int screen_width = 0;
+
+        if (screen != null) {
+            screen_width = screen.get_width();
+        }
+
+        if (screen_width > 0 && max_label_width > (screen_width / 4)) {
+            max_label_width = screen_width / 4;
+        }
+
+        /* add random padding */
+        max_label_width += 20;
+        set_default_size(max_label_width, -1);
     }
 
     private void next_engine() {
@@ -199,6 +263,7 @@ class Switcher : Gtk.Window {
             m_selected_engine = 0;
         else
             m_selected_engine ++;
+        m_label.set_text(m_buttons[m_selected_engine].get_data("longname"));
         set_focus(m_buttons[m_selected_engine]);
     }
 
@@ -207,6 +272,7 @@ class Switcher : Gtk.Window {
             m_selected_engine = m_engines.length - 1;
         else
             m_selected_engine --;
+        m_label.set_text(m_buttons[m_selected_engine].get_data("longname"));
         set_focus(m_buttons[m_selected_engine]);
     }