Use Pango's ellipsize functionality instead of doing our own clipping.

This properly takes care of the fact that one character isn't necessarily
one byte (or, for that matter, one glyph).

Replacement of tabs, LFs and CRs is no longer done. Instead, the label is
put into single-line mode (so you get [000A] and [000D] instead).

Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>

Index: panel-plugin/clipman.c
===================================================================
--- panel-plugin/clipman.c	(revision 1850)
+++ panel-plugin/clipman.c	(working copy)
@@ -112,22 +112,12 @@
 }
 
 static gchar *
-clipman_create_title (gchar *txt,
-                      gint   chars)
+clipman_create_title (gchar *txt)
 {
-    guint  i;
     gchar *s, *t, *u;
     
-    s = g_strndup (txt, chars);
+    s = g_strdup (txt);
 
-    i = 0;
-    while (s[i] != '\0')
-    {
-        if (s[i] == '\n' || s[i] == '\r' || s[i] == '\t')
-            s[i] = ' ';
-        i++;
-    }
-
     if (!g_utf8_validate (s, -1, NULL))
     {
 	DBG ("Title is not utf8 complaint, we're going to convert it");
@@ -189,8 +179,7 @@
         clip = g_ptr_array_index (clipman->clips, i);
 	
 	g_free (clip->title);        
-        clip->title = clipman_create_title (clip->text,
-	                                    clipman->MenuCharacters);
+        clip->title = clipman_create_title (clip->text);
     }
 }
 
@@ -205,7 +194,7 @@
     {
         new_clip = g_new0 (ClipmanClip, 1);
         
-        new_clip->title    = clipman_create_title (txt, clipman->MenuCharacters);
+        new_clip->title    = clipman_create_title (txt);
 	
 	/* No valid title could be created, drop it... */
 	if (new_clip->title == NULL)
@@ -334,10 +323,12 @@
 
 static GtkWidget *
 clipman_create_menuitem (ClipmanAction *action,
+                         guint          width,
                          guint          number,
                          gboolean       bold)
 {
     GtkWidget *mi;
+    GtkLabel  *label;
     gchar     *title;
 
     mi = gtk_menu_item_new_with_label  ("");
@@ -355,9 +346,13 @@
         else
             title = g_strdup_printf("<tt><span size=\"smaller\">%d.</span></tt> %s",  number ,title);
     }
-    
-    gtk_label_set_markup (GTK_LABEL(GTK_BIN(mi)->child), title);
-    
+
+    label = GTK_LABEL(GTK_BIN(mi)->child);
+    gtk_label_set_markup (label, title);
+    gtk_label_set_single_line_mode (label, TRUE);
+    gtk_label_set_ellipsize (label, PANGO_ELLIPSIZE_END);
+    gtk_label_set_max_width_chars (label, width);
+
     return mi;
 }
 
@@ -391,13 +386,15 @@
                 G_LIKELY (clip->text != NULL) && 
                 strcmp(clip->text, dtext) == 0)
             {
-                mi = clipman_create_menuitem (action, j, TRUE);
+                mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                              j, TRUE);
 		g_free (dtext);
 		dtext = NULL;
             }
             else
             {
-                mi = clipman_create_menuitem (action, j, FALSE);
+                mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                              j, FALSE);
             }
             
             g_signal_connect (G_OBJECT(mi), "button_release_event",
@@ -440,13 +437,15 @@
                 G_LIKELY (clip->text != NULL) && 
                 strcmp(clip->text, ptext) == 0)
             {
-                mi = clipman_create_menuitem (action, j, TRUE);
+                mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                              j, TRUE);
                 g_free (ptext);
 		ptext = NULL;
             }
             else
             {
-                mi = clipman_create_menuitem (action, j, FALSE);
+                mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                              j, FALSE);
             }
                 
             g_signal_connect (G_OBJECT(mi), "button_release_event",
@@ -501,7 +500,8 @@
             G_LIKELY (clip->text != NULL) && 
             strcmp(clip->text, dtext) == 0)
         {
-            mi = clipman_create_menuitem (action, clipman->clips->len-i, TRUE);
+            mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                          clipman->clips->len-i, TRUE);
             g_free (dtext);
 	    dtext = NULL;
         }
@@ -509,13 +509,15 @@
                  G_LIKELY (clip->text != NULL) && 
                  strcmp(clip->text, ptext) == 0)
         {
-            mi = clipman_create_menuitem (action, clipman->clips->len-i, TRUE);
+            mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                          clipman->clips->len-i, TRUE);
             g_free (ptext);
 	    ptext = NULL;
         }
         else
         {
-            mi = clipman_create_menuitem (action, clipman->clips->len-i, FALSE);
+            mi = clipman_create_menuitem (action, clipman->MenuCharacters,
+                                          clipman->clips->len-i, FALSE);
         }
         
         g_signal_connect (G_OBJECT(mi), "button_release_event",