[gimp] app: create pango font description of statusbar zoom field only once...

[Jehan Pagès <jehanp src gnome org>]

commit 6878b494917d258d069fb29db1847068ee10d8c3
Author: Jehan <jehan girinstud io>
Date:   Sat Feb 6 01:14:19 2016 +0100

    app: create pango font description of statusbar zoom field only once...
    
    ... instead of recreating it all the time the same.
    Small improvement of commit 3f2889e.

 app/display/gimpscalecombobox.c |   33 +++++++++++++++++----------------
 1 files changed, 17 insertions(+), 16 deletions(-)
---
diff --git a/app/display/gimpscalecombobox.c b/app/display/gimpscalecombobox.c
index 29e3158..29a7dc0 100644
--- a/app/display/gimpscalecombobox.c
+++ b/app/display/gimpscalecombobox.c
@@ -212,32 +212,33 @@ static void
 gimp_scale_combo_box_style_set (GtkWidget *widget,
                                 GtkStyle  *prev_style)
 {
-  GtkWidget            *entry;
-  GtkRcStyle           *rc_style;
-  PangoContext         *context;
-  PangoFontDescription *font_desc;
-  gint                  font_size;
-  gdouble               label_scale;
+  GtkWidget  *entry;
+  GtkRcStyle *rc_style;
 
   GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
 
-  gtk_widget_style_get (widget, "label-scale", &label_scale, NULL);
-
   entry = gtk_bin_get_child (GTK_BIN (widget));
 
   rc_style = gtk_widget_get_modifier_style (GTK_WIDGET (entry));
 
-  if (rc_style->font_desc)
-    pango_font_description_free (rc_style->font_desc);
+  if (! rc_style->font_desc)
+    {
+      PangoContext         *context;
+      PangoFontDescription *font_desc;
+      gint                  font_size;
+      gdouble               label_scale;
+
+      gtk_widget_style_get (widget, "label-scale", &label_scale, NULL);
 
-  context = gtk_widget_get_pango_context (widget);
-  font_desc = pango_context_get_font_description (context);
-  rc_style->font_desc = pango_font_description_copy (font_desc);
+      context = gtk_widget_get_pango_context (widget);
+      font_desc = pango_context_get_font_description (context);
+      rc_style->font_desc = pango_font_description_copy (font_desc);
 
-  font_size = pango_font_description_get_size (rc_style->font_desc);
-  pango_font_description_set_size (rc_style->font_desc, label_scale * font_size);
+      font_size = pango_font_description_get_size (rc_style->font_desc);
+      pango_font_description_set_size (rc_style->font_desc, label_scale * font_size);
 
-  gtk_widget_modify_style (GTK_WIDGET (entry), rc_style);
+      gtk_widget_modify_style (GTK_WIDGET (entry), rc_style);
+    }
 }
 
 static void