Redraw:

	the text in all "Follow TCP Stream" windows;

	the text in the help window if we have one up;

	all hex dump windows;

when GUI preference changes are to be applied, so that font changes and
"Follow TCP Stream" color changes show up.

Update both the Roman and bold font when the font is changed.

Don't decrement the reference counts on the old Roman and bold fonts
until that's all done.

svn path=/trunk/; revision=2401

1 files changed, 49 insertions, 5 deletions

diff --git a/gtk/help_dlg.c b/gtk/help_dlg.c
index 00d0a2c5d5..8c7b2d4198 100644
--- a/gtk/help_dlg.c
+++ b/gtk/help_dlg.c
@@ -1,6 +1,6 @@
 /* help_dlg.c
  *
- * $Id: help_dlg.c,v 1.9 2000/09/07 05:08:19 gram Exp $
+ * $Id: help_dlg.c,v 1.10 2000/09/08 10:59:13 guy Exp $
  *
  * Laurent Deniel <deniel@worldnet.fr>
  *
@@ -70,14 +70,19 @@ static void set_help_text(GtkWidget *w, help_type_t type);
  */
 static GtkWidget *help_w = NULL;
 
+/*
+ * Keep static pointers to the text widgets as well.
+ */
+GtkWidget *overview_text, *proto_text, *dfilter_text, *cfilter_text;
+
 void help_cb(GtkWidget *w, gpointer data)
 {
 
   GtkWidget *main_vb, *bbox, *help_nb, *close_bt, *label, *txt_scrollw,
-    *overview_vb, *overview_text,
-    *proto_vb, *proto_text,
-    *dfilter_vb, *dfilter_text,
-    *cfilter_vb, *cfilter_text;
+    *overview_vb,
+    *proto_vb,
+    *dfilter_vb,
+    *cfilter_vb;
   
   if (help_w != NULL) {
     /* There's already a "Help" dialog box; reactivate it. */
@@ -398,3 +403,42 @@ static void set_help_text(GtkWidget *w, help_type_t type)
   gtk_text_thaw(GTK_TEXT(w));
 
 } /* set_help_text */
+
+static void clear_help_text(GtkWidget *w)
+{
+  GtkText *txt = GTK_TEXT(w);
+
+  gtk_text_set_point(txt, 0);
+  /* Keep GTK+ 1.2.3 through 1.2.6 from dumping core - see 
+     http://ethereal.zing.org/lists/ethereal-dev/199912/msg00312.html and
+     http://www.gnome.org/mailing-lists/archives/gtk-devel-list/1999-October/0051.shtml
+     for more information */
+  gtk_adjustment_set_value(txt->vadj, 0.0);
+  gtk_text_forward_delete(txt, gtk_text_get_length(txt));
+}
+
+/* Redraw all the text widgets, to use a new font. */
+void help_redraw(void)
+{
+  if (help_w != NULL) {
+    gtk_text_freeze(GTK_TEXT(overview_text));
+    clear_help_text(overview_text);
+    set_help_text(overview_text, OVERVIEW_HELP);
+    gtk_text_thaw(GTK_TEXT(overview_text));
+
+    gtk_text_freeze(GTK_TEXT(proto_text));
+    clear_help_text(proto_text);
+    set_help_text(proto_text, PROTOCOL_HELP);
+    gtk_text_thaw(GTK_TEXT(proto_text));
+
+    gtk_text_freeze(GTK_TEXT(dfilter_text));
+    clear_help_text(dfilter_text);
+    set_help_text(dfilter_text, DFILTER_HELP);
+    gtk_text_thaw(GTK_TEXT(dfilter_text));
+
+    gtk_text_freeze(GTK_TEXT(cfilter_text));
+    clear_help_text(cfilter_text);
+    set_help_text(cfilter_text, CFILTER_HELP);
+    gtk_text_thaw(GTK_TEXT(cfilter_text));
+  }
+}