[gtksourceview/wip/search] search: add update-highlight signal

[Sébastien Wilmet <swilmet src gnome org>]

commit 84c609e974548e5287feb27822ebd5e419c8e8c2
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Jun 19 12:56:32 2013 +0200

    search: add update-highlight signal

 gtksourceview/gtksourcesearch.c |   54 ++++++++++++++++++++++++++++++++++++--
 gtksourceview/gtksourcesearch.h |    6 ++++
 2 files changed, 57 insertions(+), 3 deletions(-)
---
diff --git a/gtksourceview/gtksourcesearch.c b/gtksourceview/gtksourcesearch.c
index 5fb4ef8..48c4fbf 100644
--- a/gtksourceview/gtksourcesearch.c
+++ b/gtksourceview/gtksourcesearch.c
@@ -22,8 +22,9 @@
 #include "gtksourcesearch.h"
 #include "gtksourcebuffer.h"
 #include "gtksourcestylescheme.h"
-#include "gtktextregion.h"
 #include "gtksourcestyle-private.h"
+#include "gtksourceview-marshal.h"
+#include "gtktextregion.h"
 
 #include <string.h>
 
@@ -42,6 +43,14 @@ struct _GtkSourceSearchPrivate
        GtkTextTag *found_tag;
 };
 
+enum
+{
+       UPDATE_HIGHLIGHT,
+       LAST_SIGNAL
+};
+
+static guint search_signals[LAST_SIGNAL] = { 0 };
+
 #define GTK_SOURCE_SEARCH_GET_PRIVATE(object) \
         (G_TYPE_INSTANCE_GET_PRIVATE ((object), \
                                       GTK_SOURCE_TYPE_SEARCH, \
@@ -136,6 +145,34 @@ clear_search (GtkSourceSearch *search)
 }
 
 static void
+add_subregion (GtkSourceSearch *search,
+              GtkTextIter     *start,
+              GtkTextIter     *end)
+{
+       if (search->priv->region == NULL)
+       {
+               return;
+       }
+
+       if (!gtk_text_iter_starts_line (start))
+       {
+               gtk_text_iter_set_line_offset (start, 0);
+       }
+
+       if (!gtk_text_iter_ends_line (end))
+       {
+               gtk_text_iter_forward_to_line_end (end);
+       }
+
+       gtk_text_region_add (search->priv->region, start, end);
+
+       gtk_text_iter_backward_lines (start, search->priv->text_nb_lines);
+       gtk_text_iter_forward_lines (end, search->priv->text_nb_lines);
+
+       g_signal_emit (search, search_signals[UPDATE_HIGHLIGHT], 0, start, end);
+}
+
+static void
 update (GtkSourceSearch *search)
 {
        GtkTextIter start;
@@ -156,8 +193,7 @@ update (GtkSourceSearch *search)
        search->priv->region = gtk_text_region_new (search->priv->buffer);
 
        gtk_text_buffer_get_bounds (search->priv->buffer, &start, &end);
-
-       gtk_text_region_add (search->priv->region, &start, &end);
+       add_subregion (search, &start, &end);
 }
 
 static void
@@ -194,6 +230,18 @@ _gtk_source_search_class_init (GtkSourceSearchClass *klass)
        object_class->dispose = _gtk_source_search_dispose;
        object_class->finalize = _gtk_source_search_finalize;
 
+       search_signals[UPDATE_HIGHLIGHT] =
+               g_signal_new ("update-highlight",
+                             G_OBJECT_CLASS_TYPE (object_class),
+                             G_SIGNAL_RUN_LAST,
+                             G_STRUCT_OFFSET (GtkSourceSearchClass, update_highlight),
+                             NULL, NULL,
+                             _gtksourceview_marshal_VOID__BOXED_BOXED,
+                             G_TYPE_NONE,
+                             2,
+                             GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE,
+                             GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE);
+
        g_type_class_add_private (object_class, sizeof (GtkSourceSearchPrivate));
 }
 
diff --git a/gtksourceview/gtksourcesearch.h b/gtksourceview/gtksourcesearch.h
index 4a6e45d..1dde5ba 100644
--- a/gtksourceview/gtksourcesearch.h
+++ b/gtksourceview/gtksourcesearch.h
@@ -48,6 +48,12 @@ struct _GtkSourceSearch
 struct _GtkSourceSearchClass
 {
        GObjectClass parent_class;
+
+       /* Signals */
+
+       void (* update_highlight)       (GtkSourceSearch *search,
+                                        GtkTextIter     *start,
+                                        GtkTextIter     *end);
 };
 
 G_GNUC_INTERNAL