icontheme: Keep a serial

This will let us identify when we have to re-lookup
icons because they may have changed despite the theme
object being the same.

2 files changed, 11 insertions, 0 deletions

diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index cce4706c95..4cb92350e5 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -331,6 +331,8 @@ struct _GtkIconTheme
   GList *dir_mtimes;
 
   gulong theme_changed_idle;
+
+  int serial;
 };
 
 struct _GtkIconThemeClass
@@ -1367,6 +1369,13 @@ blow_themes (GtkIconTheme *self)
   self->unthemed_icons = NULL;
   self->dir_mtimes = NULL;
   self->themes_valid = FALSE;
+  self->serial++;
+}
+
+int
+gtk_icon_theme_get_serial (GtkIconTheme *self)
+{
+  return self->serial;
 }
 
 static void
diff --git a/gtk/gtkiconthemeprivate.h b/gtk/gtkiconthemeprivate.h
index 495662d1aa..44225fb57a 100644
--- a/gtk/gtkiconthemeprivate.h
+++ b/gtk/gtkiconthemeprivate.h
@@ -41,4 +41,6 @@ void gtk_icon_paintable_snapshot_with_colors (GtkIconPaintable *icon,
                                               const GdkRGBA    *warning_color,
                                               const GdkRGBA    *error_color);
 
+int gtk_icon_theme_get_serial (GtkIconTheme *self);
+
 #endif /* __GTK_ICON_THEME_PRIVATE_H__ */