[gtk+] GtkLabel: Make it possible to get the ellipsis range

[Matthias Clasen <matthiasc src gnome org>]

commit fc5f7cc1383f869c3e82c9e327801d6b03bc854b
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 3 21:39:34 2014 -0400

    GtkLabel: Make it possible to get the ellipsis range
    
    This will be used in the next commit to expand the selection.

 gtk/gtklabel.c |   28 ++++++++++++++++++++++------
 1 files changed, 22 insertions(+), 6 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index d5377ae..9c9d098 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -4562,9 +4562,11 @@ get_layout_index (GtkLabel *label,
 }
 
 static gboolean
-range_is_in_ellipsis (GtkLabel *label,
-                      gint      start,
-                      gint      end)
+range_is_in_ellipsis_full (GtkLabel *label,
+                           gint      range_start,
+                           gint      range_end,
+                           gint     *ellipsis_start,
+                           gint     *ellipsis_end)
 {
   GtkLabelPrivate *priv = label->priv;
   PangoLayoutIter *iter;
@@ -4592,13 +4594,19 @@ range_is_in_ellipsis (GtkLabel *label,
 
         item = ((PangoGlyphItem*)run)->item;
 
-        if (item->offset <= start && end <= item->offset + item->length)
+        if (item->offset <= range_start && range_end <= item->offset + item->length)
           {
             if (item->analysis.flags & PANGO_ANALYSIS_FLAG_IS_ELLIPSIS)
-              in_ellipsis = TRUE;
+              {
+                if (ellipsis_start)
+                  *ellipsis_start = item->offset;
+                if (ellipsis_end)
+                  *ellipsis_end = item->offset + item->length;
+                in_ellipsis = TRUE;
+              }
             break;
           }
-        else if (item->offset + item->length >= end)
+        else if (item->offset + item->length >= range_end)
           break;
       }
   } while (pango_layout_iter_next_run (iter));
@@ -4608,6 +4616,14 @@ range_is_in_ellipsis (GtkLabel *label,
   return in_ellipsis;
 }
 
+static gboolean
+range_is_in_ellipsis (GtkLabel *label,
+                      gint      range_start,
+                      gint      range_end)
+{
+  return range_is_in_ellipsis_full (label, range_start, range_end, NULL, NULL);
+}
+
 static void
 gtk_label_select_word (GtkLabel *label)
 {