[gimp] libgimpcolor: remove deprecated integer RGB <-> HSL conversion functions

[Michael Natterer <mitch src gnome org>]

commit f8ce6b7440079f68b741c799527b3122383be3d6
Author: Michael Natterer <mitch gimp org>
Date:   Mon Oct 22 13:29:11 2018 +0200

    libgimpcolor: remove deprecated integer RGB <-> HSL conversion functions

 libgimpcolor/gimpcolor.def    |   3 -
 libgimpcolor/gimpcolorspace.c | 185 ------------------------------------------
 libgimpcolor/gimpcolorspace.h |  19 -----
 3 files changed, 207 deletions(-)
---
diff --git a/libgimpcolor/gimpcolor.def b/libgimpcolor/gimpcolor.def
index 4fd5a70e00..505baf7211 100644
--- a/libgimpcolor/gimpcolor.def
+++ b/libgimpcolor/gimpcolor.def
@@ -62,7 +62,6 @@ EXPORTS
        gimp_hsl_set
        gimp_hsl_set_alpha
        gimp_hsl_to_rgb
-       gimp_hsl_to_rgb_int
        gimp_hsv_clamp
        gimp_hsv_get_type
        gimp_hsv_set
@@ -98,9 +97,7 @@ EXPORTS
        gimp_rgb_subtract
        gimp_rgb_to_cmyk
        gimp_rgb_to_hsl
-       gimp_rgb_to_hsl_int
        gimp_rgb_to_hsv
-       gimp_rgb_to_l_int
        gimp_rgba_add
        gimp_rgba_distance
        gimp_rgba_get_pixel
diff --git a/libgimpcolor/gimpcolorspace.c b/libgimpcolor/gimpcolorspace.c
index 1dcd8edb35..f1a0e1b7d4 100644
--- a/libgimpcolor/gimpcolorspace.c
+++ b/libgimpcolor/gimpcolorspace.c
@@ -46,10 +46,6 @@
 
 #define GIMP_HSL_UNDEFINED -1.0
 
-/*********************************
- *   color conversion routines   *
- *********************************/
-
 
 /*  GimpRGB functions  */
 
@@ -401,184 +397,3 @@ gimp_cmyk_to_rgb (const GimpCMYK *cmyk,
   rgb->b = 1.0 - y;
   rgb->a = cmyk->a;
 }
-
-
-/*  gint functions  */
-
-/**
- * gimp_rgb_to_hsl_int:
- * @red: Red channel, returns Hue channel
- * @green: Green channel, returns Lightness channel
- * @blue: Blue channel, returns Saturation channel
- *
- * The arguments are pointers to int representing channel values in the
- * RGB colorspace, and the values pointed to are all in the range [0, 255].
- *
- * The function changes the arguments to point to the corresponding HLS
- * value with the values pointed to in the following ranges:  H [0, 360],
- * L [0, 255], S [0, 255].
- **/
-void
-gimp_rgb_to_hsl_int (gint *red,
-                     gint *green,
-                     gint *blue)
-{
-  gint    r, g, b;
-  gdouble h, s, l;
-  gint    min, max;
-  gint    delta;
-
-  r = *red;
-  g = *green;
-  b = *blue;
-
-  if (r > g)
-    {
-      max = MAX (r, b);
-      min = MIN (g, b);
-    }
-  else
-    {
-      max = MAX (g, b);
-      min = MIN (r, b);
-    }
-
-  l = (max + min) / 2.0;
-
-  if (max == min)
-    {
-      s = 0.0;
-      h = 0.0;
-    }
-  else
-    {
-      delta = (max - min);
-
-      if (l < 128)
-        s = 255 * (gdouble) delta / (gdouble) (max + min);
-      else
-        s = 255 * (gdouble) delta / (gdouble) (511 - max - min);
-
-      if (r == max)
-        h = (g - b) / (gdouble) delta;
-      else if (g == max)
-        h = 2 + (b - r) / (gdouble) delta;
-      else
-        h = 4 + (r - g) / (gdouble) delta;
-
-      h = h * 42.5;
-
-      if (h < 0)
-        h += 255;
-      else if (h > 255)
-        h -= 255;
-    }
-
-  *red   = ROUND (h);
-  *green = ROUND (s);
-  *blue  = ROUND (l);
-}
-
-/**
- * gimp_rgb_to_l_int:
- * @red: Red channel
- * @green: Green channel
- * @blue: Blue channel
- *
- * Calculates the lightness value of an RGB triplet with the formula
- * L = (max(R, G, B) + min (R, G, B)) / 2
- *
- * Return value: Luminance value corresponding to the input RGB value
- **/
-gint
-gimp_rgb_to_l_int (gint red,
-                   gint green,
-                   gint blue)
-{
-  gint min, max;
-
-  if (red > green)
-    {
-      max = MAX (red,   blue);
-      min = MIN (green, blue);
-    }
-  else
-    {
-      max = MAX (green, blue);
-      min = MIN (red,   blue);
-    }
-
-  return ROUND ((max + min) / 2.0);
-}
-
-static inline gint
-gimp_hsl_value_int (gdouble n1,
-                    gdouble n2,
-                    gdouble hue)
-{
-  gdouble value;
-
-  if (hue > 255)
-    hue -= 255;
-  else if (hue < 0)
-    hue += 255;
-
-  if (hue < 42.5)
-    value = n1 + (n2 - n1) * (hue / 42.5);
-  else if (hue < 127.5)
-    value = n2;
-  else if (hue < 170)
-    value = n1 + (n2 - n1) * ((170 - hue) / 42.5);
-  else
-    value = n1;
-
-  return ROUND (value * 255.0);
-}
-
-/**
- * gimp_hsl_to_rgb_int:
- * @hue: Hue channel, returns Red channel
- * @saturation: Saturation channel, returns Green channel
- * @lightness: Lightness channel, returns Blue channel
- *
- * The arguments are pointers to int, with the values pointed to in the
- * following ranges:  H [0, 360], L [0, 255], S [0, 255].
- *
- * The function changes the arguments to point to the RGB value
- * corresponding, with the returned values all in the range [0, 255].
- **/
-void
-gimp_hsl_to_rgb_int (gint *hue,
-                     gint *saturation,
-                     gint *lightness)
-{
-  gdouble h, s, l;
-
-  h = *hue;
-  s = *saturation;
-  l = *lightness;
-
-  if (s == 0)
-    {
-      /*  achromatic case  */
-      *hue        = l;
-      *lightness  = l;
-      *saturation = l;
-    }
-  else
-    {
-      gdouble m1, m2;
-
-      if (l < 128)
-        m2 = (l * (255 + s)) / 65025.0;
-      else
-        m2 = (l + s - (l * s) / 255.0) / 255.0;
-
-      m1 = (l / 127.5) - m2;
-
-      /*  chromatic case  */
-      *hue        = gimp_hsl_value_int (m1, m2, h + 85);
-      *saturation = gimp_hsl_value_int (m1, m2, h);
-      *lightness  = gimp_hsl_value_int (m1, m2, h - 85);
-    }
-}
diff --git a/libgimpcolor/gimpcolorspace.h b/libgimpcolor/gimpcolorspace.h
index f5327c4351..c127a42c6b 100644
--- a/libgimpcolor/gimpcolorspace.h
+++ b/libgimpcolor/gimpcolorspace.h
@@ -48,25 +48,6 @@ void   gimp_hsl_to_rgb          (const GimpHSL  *hsl,
 void   gimp_cmyk_to_rgb         (const GimpCMYK *cmyk,
                                  GimpRGB        *rgb);
 
-
-/*  gint functions  */
-
-GIMP_DEPRECATED_FOR (gimp_rgb_to_hsl)
-void    gimp_rgb_to_hsl_int     (gint    *red         /* returns hue        */,
-                                 gint    *green       /* returns saturation */,
-                                 gint    *blue        /* returns lightness  */);
-
-GIMP_DEPRECATED_FOR (gimp_rgb_to_hsl)
-gint    gimp_rgb_to_l_int       (gint     red,
-                                 gint     green,
-                                 gint     blue);
-
-GIMP_DEPRECATED_FOR (gimp_hsl_to_rgb)
-void    gimp_hsl_to_rgb_int     (gint    *hue         /* returns red        */,
-                                 gint    *saturation  /* returns green      */,
-                                 gint    *lightness   /* returns blue       */);
-
-
 G_END_DECLS
 
 #endif  /* __GIMP_COLOR_SPACE_H__ */