[gspell/wip/improve-perfs] InlineCheckerTextBuffer: start new check_subregion() implementation

[Sébastien Wilmet <swilmet src gnome org>]

commit cce36e06dc2d53ccca1bb667c7387c69115ba96f
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Apr 1 19:33:01 2017 +0200

    InlineCheckerTextBuffer: start new check_subregion() implementation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776811#c5

 gspell/gspell-inline-checker-text-buffer.c |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
---
diff --git a/gspell/gspell-inline-checker-text-buffer.c b/gspell/gspell-inline-checker-text-buffer.c
index de317d1..d94d1b9 100644
--- a/gspell/gspell-inline-checker-text-buffer.c
+++ b/gspell/gspell-inline-checker-text-buffer.c
@@ -161,10 +161,30 @@ adjust_iters (GtkTextIter *start,
 }
 
 static void
+get_pango_log_attrs (const gchar   *text,
+                    PangoLogAttr **log_attrs,
+                    gint          *n_attrs)
+{
+       *n_attrs = g_utf8_strlen (text, -1) + 1;
+       *log_attrs = g_new0 (PangoLogAttr, *n_attrs);
+
+       pango_get_log_attrs (text,
+                            strlen (text),
+                            -1,
+                            NULL,
+                            *log_attrs,
+                            *n_attrs);
+}
+
+static void
 check_subregion (GspellInlineCheckerTextBuffer *spell,
                 GtkTextIter                   *start,
                 GtkTextIter                   *end)
 {
+       gchar *text;
+       PangoLogAttr *log_attrs;
+       gint n_attrs;
+
        g_return_if_fail (gtk_text_iter_compare (start, end) <= 0);
 
        adjust_iters (start, end, ADJUST_MODE_STRICTLY_INSIDE_WORD);
@@ -173,6 +193,13 @@ check_subregion (GspellInlineCheckerTextBuffer *spell,
                                    spell->highlight_tag,
                                    start,
                                    end);
+
+       text = gtk_text_iter_get_slice (start, end);
+
+       get_pango_log_attrs (text, &log_attrs, &n_attrs);
+
+       g_free (text);
+       g_free (log_attrs);
 }
 
 static void