LinGui: work around yet another gtk+-3 bug

GtkTextView gets confused if you try to set it's contents again while
in a callback for a change to the TextView.  So prevent such behavior
by the app.  Requires updating the x264Option TextView in the background
(idle loop) rather than immediately.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@7013 b64f7644-9d1e-0410-96f1-a4d463321fa5

4 files changed, 49 insertions, 5 deletions

diff --git a/gtk/src/settings.c b/gtk/src/settings.c
index 91d95e761..26a622a61 100644
--- a/gtk/src/settings.c
+++ b/gtk/src/settings.c
@@ -561,9 +561,15 @@ ghb_update_widget(GtkWidget *widget, const GhbValue *value)
     }
     else if (type == GTK_TYPE_TEXT_VIEW)
     {
+        static int text_view_busy = 0;
         GtkTextBuffer *buffer = gtk_text_view_get_buffer(
                                                 GTK_TEXT_VIEW(widget));
-        gtk_text_buffer_set_text (buffer, str, -1);
+        if (!text_view_busy)
+        {
+            text_view_busy = 1;
+            gtk_text_buffer_set_text (buffer, str, -1);
+            text_view_busy = 0;
+        }
     }
     else if (type == GTK_TYPE_LABEL)
     {
diff --git a/gtk/src/videohandler.c b/gtk/src/videohandler.c
index 8a5e16591..94845442d 100644
--- a/gtk/src/videohandler.c
+++ b/gtk/src/videohandler.c
@@ -20,6 +20,7 @@
 #include "presets.h"
 #include "preview.h"
 #include "hb-backend.h"
+#include "x264handler.h"
 
 int ghb_get_video_encoder(GhbValue *settings)
 {
@@ -165,9 +166,9 @@ ghb_video_setting_changed(GtkWidget *widget, signal_user_data_t *ud)
         new_opts = hb_x264_param_unparse(
                         preset, tunes, opts, profile, level, w, h);
         if (new_opts)
-            ghb_ui_update(ud, "x264Option", ghb_string_value(new_opts));
+            ghb_update_x264Option(ud, new_opts);
         else
-            ghb_ui_update(ud, "x264Option", ghb_string_value(""));
+            ghb_update_x264Option(ud, "");
 
         GtkWidget *eo = GTK_WIDGET(GHB_WIDGET(ud->builder, "VideoOptionExtra"));
 
diff --git a/gtk/src/x264handler.c b/gtk/src/x264handler.c
index 46eb8c1cf..649a3a78f 100644
--- a/gtk/src/x264handler.c
+++ b/gtk/src/x264handler.c
@@ -150,7 +150,7 @@ x264_entry_changed_cb(GtkWidget *widget, signal_user_data_t *ud)
             gchar *sopts;
 
             sopts = sanitize_x264opts(ud, options);
-            ghb_ui_update(ud, "x264Option", ghb_string_value(sopts));
+            ghb_update_x264Option(ud, sopts);
             ghb_x264_parse_options(ud, sopts);
 
             GtkWidget *eo = GTK_WIDGET(GHB_WIDGET(ud->builder, "VideoOptionExtra"));
@@ -795,7 +795,7 @@ x264_opt_update(signal_user_data_t *ud, GtkWidget *widget)
         if (len > 0) result[len - 1] = 0;
         gchar *sopts;
         sopts = sanitize_x264opts(ud, result);
-        ghb_ui_update(ud, "x264Option", ghb_string_value(sopts));
+        ghb_update_x264Option(ud, sopts);
         ghb_x264_parse_options(ud, sopts);
         g_free(sopts);
         g_free(result);
@@ -1060,3 +1060,39 @@ ghb_x264_init(signal_user_data_t *ud)
 {
     ud->x264_priv = ghb_settings_new();
 }
+
+gboolean
+ghb_background_refresh_x264Option(signal_user_data_t *ud)
+{
+    const char *opt;
+    opt = ghb_settings_get_const_string(ud->settings, "x264Option");
+
+    GtkWidget *widget;
+    GtkTextBuffer *buffer;
+    GtkTextIter start, end;
+    gchar *str;
+
+    widget = GHB_WIDGET(ud->builder, "x264Option");
+    buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(widget));
+    gtk_text_buffer_get_bounds(buffer, &start, &end);
+    str = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
+
+    // If the value has changed, then update it
+    if (opt != NULL)
+    {
+        if (str == NULL || strcmp(str, opt))
+        {
+            ud->dont_clear_presets = 1;
+            ghb_ui_update(ud, "x264Option", ghb_string_value(opt));
+            ud->dont_clear_presets = 0;
+        }
+    }
+    free(str);
+    return FALSE;
+}
+
+void ghb_update_x264Option(signal_user_data_t *ud, const char *opt)
+{
+    ghb_settings_set_string(ud->settings, "x264Option", opt);
+    g_idle_add((GSourceFunc)ghb_background_refresh_x264Option, ud);
+}
diff --git a/gtk/src/x264handler.h b/gtk/src/x264handler.h
index c510b425d..b827e568c 100644
--- a/gtk/src/x264handler.h
+++ b/gtk/src/x264handler.h
@@ -31,5 +31,6 @@ void ghb_x264_init(signal_user_data_t *ud);
 void ghb_x264_parse_options(signal_user_data_t *ud, const gchar *options);
 gint ghb_lookup_badapt(const gchar *options);
 void ghb_show_hide_advanced_video( signal_user_data_t *ud );
+void ghb_update_x264Option(signal_user_data_t *ud, const char *opt);
 
 #endif // _X264HANDLER_H_