[gtk+/adjustment-animation-fixes: 1/5] adjustment: Add private gtk_adjustment_get_target_value() method

[Carlos Garnacho <carlosg src gnome org>]

commit 0d9acd12d8061f9daa00f3b5d56ff7782f03a3b5
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Jul 8 15:13:31 2014 +0200

    adjustment: Add private gtk_adjustment_get_target_value() method
    
    This call returns either the target value if there is an ongoing animation,
    or the current value if there is no animation.

 gtk/gtkadjustment.c        |   11 +++++++++++
 gtk/gtkadjustmentprivate.h |    1 +
 2 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkadjustment.c b/gtk/gtkadjustment.c
index 8cab120..6ae5405 100644
--- a/gtk/gtkadjustment.c
+++ b/gtk/gtkadjustment.c
@@ -428,6 +428,17 @@ gtk_adjustment_get_value (GtkAdjustment *adjustment)
   return adjustment->priv->value;
 }
 
+gdouble
+gtk_adjustment_get_target_value (GtkAdjustment *adjustment)
+{
+  g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), 0.0);
+
+  if (adjustment->priv->tick_id)
+    return adjustment->priv->target;
+  else
+    return adjustment->priv->value;
+}
+
 static void
 adjustment_set_value (GtkAdjustment *adjustment,
                       gdouble        value)
diff --git a/gtk/gtkadjustmentprivate.h b/gtk/gtkadjustmentprivate.h
index b36f13f..72ecaff 100644
--- a/gtk/gtkadjustmentprivate.h
+++ b/gtk/gtkadjustmentprivate.h
@@ -29,6 +29,7 @@ void gtk_adjustment_enable_animation (GtkAdjustment *adjustment,
                                       guint          duration);
 void gtk_adjustment_animate_to_value (GtkAdjustment *adjustment,
                                       gdouble        value);
+gdouble gtk_adjustment_get_target_value (GtkAdjustment *adjustment);
 
 G_END_DECLS