[gimp] Bug 749902 - Add Hue-Chroma operation/tool and LCH color selector

[Michael Natterer <mitch src gnome org>]

commit 6ab57a12cfde91fe1c0fb178a12c331b493d4be2
Author: Michael Natterer <mitch gimp org>
Date:   Thu May 18 19:53:47 2017 +0200

    Bug 749902 - Add Hue-Chroma operation/tool and LCH color selector
    
    Last bit for now: allow GimpColorScales' spinbuttons to go further
    than its color scales. Please review the new min/max values of the
    individual channels.

 libgimpwidgets/gimpcolorscales.c |   27 ++++++++++++++++++++++-----
 1 files changed, 22 insertions(+), 5 deletions(-)
---
diff --git a/libgimpwidgets/gimpcolorscales.c b/libgimpwidgets/gimpcolorscales.c
index 6b8e489..04f8423 100644
--- a/libgimpwidgets/gimpcolorscales.c
+++ b/libgimpwidgets/gimpcolorscales.c
@@ -144,13 +144,21 @@ gimp_color_scales_init (GimpColorScales *scales)
   GSList            *group;
   gint               i;
 
+  /*{   H,   S,   V,      R,    G,    B,   A,     L,   C,   H }*/
+
   static const gdouble slider_initial_vals[] =
-  /*{   H,   S,   V,   R,   G,   B,   A,   L,   C,   H }*/
-    {   0,   0,   0,   0,   0,   0,   0,   0,   0,   0 };
+    {   0,   0,   0,      0,    0,    0,   0,     0,   0,   0 };
+  static const gdouble slider_min_vals[] =
+    {   0,   0,   0,      0,    0,    0,   0,     0,   0,   0 };
   static const gdouble slider_max_vals[] =
-    { 360, 100, 100, 100, 100, 100, 100, 100, 100, 360 };
+    { 360, 100, 100,    100,  100,  100, 100,   100, 100, 360 };
   static const gdouble slider_incs[] =
-    {  30,  10,  10,  16,  16,  16,  10,  10,  10,  30 };
+    {  30,  10,  10,     16,   16,   16,  10,    10,  10,  30 };
+
+  static const gdouble spin_min_vals[] =
+    {   0,   0,   0,   -500, -500, -500,   0,     0,   0,   0 };
+  static const gdouble spin_max_vals[] =
+    { 360, 500, 500,    500,  500,  500, 100,   300, 300, 360 };
 
   /*  don't needs the toggles for our own operation  */
   selector->toggles_visible = FALSE;
@@ -201,12 +209,21 @@ gimp_color_scales_init (GimpColorScales *scales)
                                     gettext (enum_desc->value_desc),
                                     -1, -1,
                                     slider_initial_vals[i],
-                                    0.0, slider_max_vals[i],
+                                    slider_min_vals[i],
+                                    slider_max_vals[i],
                                     1.0, slider_incs[i],
                                     1,
                                     gettext (enum_desc->value_help),
                                     NULL);
 
+      gtk_adjustment_configure (GTK_ADJUSTMENT (scales->slider_data[i]),
+                                slider_initial_vals[i],
+                                spin_min_vals[i],
+                                spin_max_vals[i],
+                                1.0,
+                                slider_incs[i],
+                                0);
+
       scales->sliders[i] = GIMP_SCALE_ENTRY_SCALE (scales->slider_data[i]);
       g_object_add_weak_pointer (G_OBJECT (scales->sliders[i]),
                                  (gpointer) &scales->sliders[i]);