[gimp] app, libgimpwidgets: don't set unchanged object properties again

[Michael Natterer <mitch src gnome org>]

commit 77a515dd0f452fa93b3c398087ad0a15bea159b0
Author: Michael Natterer <mitch gimp org>
Date:   Thu Jun 19 02:01:10 2014 +0200

    app, libgimpwidgets: don't set unchanged object properties again
    
    gimp_prop_adjustment_callback(): compare the property's current value
    before setting it.

 app/widgets/gimppropwidgets.c    |   49 ++++++++++++++++++++++++++++++++-----
 libgimpwidgets/gimppropwidgets.c |   49 ++++++++++++++++++++++++++++++++-----
 2 files changed, 84 insertions(+), 14 deletions(-)
---
diff --git a/app/widgets/gimppropwidgets.c b/app/widgets/gimppropwidgets.c
index 8635b31..88b9c6a 100644
--- a/app/widgets/gimppropwidgets.c
+++ b/app/widgets/gimppropwidgets.c
@@ -611,31 +611,66 @@ gimp_prop_adjustment_callback (GtkAdjustment *adjustment,
 
   if (G_IS_PARAM_SPEC_INT (param_spec))
     {
-      g_object_set (config, param_spec->name, (gint) value, NULL);
+      gint v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gint) value)
+        g_object_set (config, param_spec->name, (gint) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_UINT (param_spec))
     {
-      g_object_set (config, param_spec->name, (guint) value, NULL);
+      guint v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (guint) value)
+        g_object_set (config, param_spec->name, (guint) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_LONG (param_spec))
     {
-      g_object_set (config, param_spec->name, (glong) value, NULL);
+      glong v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (glong) value)
+        g_object_set (config, param_spec->name, (glong) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_ULONG (param_spec))
     {
-      g_object_set (config, param_spec->name, (gulong) value, NULL);
+      gulong v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gulong) value)
+        g_object_set (config, param_spec->name, (gulong) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_INT64 (param_spec))
     {
-      g_object_set (config, param_spec->name, (gint64) value, NULL);
+      gint64 v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gint64) value)
+        g_object_set (config, param_spec->name, (gint64) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_UINT64 (param_spec))
     {
-      g_object_set (config, param_spec->name, (guint64) value, NULL);
+      guint64 v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (guint64) value)
+        g_object_set (config, param_spec->name, (guint64) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_DOUBLE (param_spec))
     {
-      g_object_set (config, param_spec->name, value, NULL);
+      gdouble v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != value)
+        g_object_set (config, param_spec->name, value, NULL);
     }
 }
 
diff --git a/libgimpwidgets/gimppropwidgets.c b/libgimpwidgets/gimppropwidgets.c
index 53977eb..45bd400 100644
--- a/libgimpwidgets/gimppropwidgets.c
+++ b/libgimpwidgets/gimppropwidgets.c
@@ -1389,31 +1389,66 @@ gimp_prop_adjustment_callback (GtkAdjustment *adjustment,
 
   if (G_IS_PARAM_SPEC_INT (param_spec))
     {
-      g_object_set (config, param_spec->name, (gint) value, NULL);
+      gint v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gint) value)
+        g_object_set (config, param_spec->name, (gint) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_UINT (param_spec))
     {
-      g_object_set (config, param_spec->name, (guint) value, NULL);
+      guint v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (guint) value)
+        g_object_set (config, param_spec->name, (guint) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_LONG (param_spec))
     {
-      g_object_set (config, param_spec->name, (glong) value, NULL);
+      glong v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (glong) value)
+        g_object_set (config, param_spec->name, (glong) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_ULONG (param_spec))
     {
-      g_object_set (config, param_spec->name, (gulong) value, NULL);
+      gulong v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gulong) value)
+        g_object_set (config, param_spec->name, (gulong) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_INT64 (param_spec))
     {
-      g_object_set (config, param_spec->name, (gint64) value, NULL);
+      gint64 v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (gint64) value)
+        g_object_set (config, param_spec->name, (gint64) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_UINT64 (param_spec))
     {
-      g_object_set (config, param_spec->name, (guint64) value, NULL);
+      guint64 v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != (guint64) value)
+        g_object_set (config, param_spec->name, (guint64) value, NULL);
     }
   else if (G_IS_PARAM_SPEC_DOUBLE (param_spec))
     {
-      g_object_set (config, param_spec->name, value, NULL);
+      gdouble v;
+
+      g_object_get (config, param_spec->name, &v, NULL);
+
+      if (v != value)
+        g_object_set (config, param_spec->name, value, NULL);
     }
 }