[gimp] app: don't ROUND() all input/output values to int in GimpLevelsTool

[Michael Natterer <mitch src gnome org>]

commit 875b1705fc9fa61fb742c6609f46b1f753c41f29
Author: Michael Natterer <mitch gimp org>
Date:   Mon Jun 10 21:51:15 2013 +0200

    app: don't ROUND() all input/output values to int in GimpLevelsTool
    
    That was a leftover from before the change to 0..100 sliders for
    non-8-bit images. Spoted by Elle Stone.

 app/tools/gimplevelstool.c |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)
---
diff --git a/app/tools/gimplevelstool.c b/app/tools/gimplevelstool.c
index 3215f48..5b1516a 100644
--- a/app/tools/gimplevelstool.c
+++ b/app/tools/gimplevelstool.c
@@ -1056,7 +1056,10 @@ levels_low_input_changed (GtkAdjustment  *adjustment,
                           GimpLevelsTool *tool)
 {
   GimpLevelsConfig *config = tool->config;
-  gint              value  = ROUND (gtk_adjustment_get_value (adjustment));
+  gdouble           value  = gtk_adjustment_get_value (adjustment);
+
+  if (tool->ui_scale_factor == 255.0)
+    value = ROUND (value);
 
   gtk_adjustment_set_lower (tool->high_input, value);
   gtk_adjustment_set_lower (tool->gamma_linear, value);
@@ -1093,7 +1096,10 @@ levels_high_input_changed (GtkAdjustment  *adjustment,
                            GimpLevelsTool *tool)
 {
   GimpLevelsConfig *config = tool->config;
-  gint              value  = ROUND (gtk_adjustment_get_value (adjustment));
+  gdouble           value  = gtk_adjustment_get_value (adjustment);
+
+  if (tool->ui_scale_factor == 255.0)
+    value = ROUND (value);
 
   gtk_adjustment_set_upper (tool->low_input, value);
   gtk_adjustment_set_upper (tool->gamma_linear, value);
@@ -1113,7 +1119,10 @@ levels_low_output_changed (GtkAdjustment  *adjustment,
                            GimpLevelsTool *tool)
 {
   GimpLevelsConfig *config = tool->config;
-  gint              value  = ROUND (gtk_adjustment_get_value (adjustment));
+  gdouble           value  = gtk_adjustment_get_value (adjustment);
+
+  if (tool->ui_scale_factor == 255.0)
+    value = ROUND (value);
 
   if (config->low_output[config->channel] != value / tool->ui_scale_factor)
     {
@@ -1128,7 +1137,10 @@ levels_high_output_changed (GtkAdjustment  *adjustment,
                             GimpLevelsTool *tool)
 {
   GimpLevelsConfig *config = tool->config;
-  gint              value  = ROUND (gtk_adjustment_get_value (adjustment));
+  gdouble           value  = gtk_adjustment_get_value (adjustment);
+
+  if (tool->ui_scale_factor == 255.0)
+    value = ROUND (value);
 
   if (config->high_output[config->channel] != value / tool->ui_scale_factor)
     {