libgimpconfig: add a preferred gray profile to GimpColorConfig

libgimpconfig/gimpcolorconfig.c

@@ -65,6 +65,10 @@
   _("The preferred RGB working space color profile. It will be offered " \
     "next to the built-in RGB profile when a color profile can be chosen.")
 
+#define GRAY_PROFILE_BLURB \
+  _("The preferred grayscale working space color profile. It will be offered " \
+    "next to the built-in grayscale profile when a color profile can be chosen.")
+
 #define CMYK_PROFILE_BLURB \
   _("The CMYK color profile used to convert between RGB and CMYK.")
 
@@ -106,6 +110,7 @@ enum
   PROP_0,
   PROP_MODE,
   PROP_RGB_PROFILE,
+  PROP_GRAY_PROFILE,
   PROP_CMYK_PROFILE,
   PROP_DISPLAY_PROFILE,
   PROP_DISPLAY_PROFILE_FROM_GDK,
@@ -133,6 +138,9 @@ static void  gimp_color_config_get_property        (GObject          *object,
 static void  gimp_color_config_set_rgb_profile     (GimpColorConfig  *config,
                                                     const gchar      *filename,
                                                     GError          **error);
+static void  gimp_color_config_set_gray_profile    (GimpColorConfig  *config,
+                                                    const gchar      *filename,
+                                                    GError          **error);
 static void  gimp_color_config_set_cmyk_profile    (GimpColorConfig  *config,
                                                     const gchar      *filename,
                                                     GError          **error);
@@ -173,6 +181,10 @@ gimp_color_config_class_init (GimpColorConfigClass *klass)
                                  "rgb-profile", RGB_PROFILE_BLURB,
                                  GIMP_CONFIG_PATH_FILE, NULL,
                                  GIMP_PARAM_STATIC_STRINGS);
+  GIMP_CONFIG_INSTALL_PROP_PATH (object_class, PROP_GRAY_PROFILE,
+                                 "gray-profile", GRAY_PROFILE_BLURB,
+                                 GIMP_CONFIG_PATH_FILE, NULL,
+                                 GIMP_PARAM_STATIC_STRINGS);
   GIMP_CONFIG_INSTALL_PROP_PATH (object_class, PROP_CMYK_PROFILE,
                                  "cmyk-profile", CMYK_PROFILE_BLURB,
                                  GIMP_CONFIG_PATH_FILE, NULL,
@@ -241,6 +253,9 @@ gimp_color_config_finalize (GObject *object)
   if (color_config->rgb_profile)
     g_free (color_config->rgb_profile);
 
+  if (color_config->gray_profile)
+    g_free (color_config->gray_profile);
+
   if (color_config->cmyk_profile)
     g_free (color_config->cmyk_profile);
 
@@ -275,6 +290,11 @@ gimp_color_config_set_property (GObject      *object,
                                          g_value_get_string (value),
                                          &error);
       break;
+    case PROP_GRAY_PROFILE:
+      gimp_color_config_set_gray_profile (color_config,
+                                          g_value_get_string (value),
+                                          &error);
+      break;
     case PROP_CMYK_PROFILE:
       gimp_color_config_set_cmyk_profile (color_config,
                                           g_value_get_string (value),
@@ -344,6 +364,9 @@ gimp_color_config_get_property (GObject    *object,
     case PROP_RGB_PROFILE:
       g_value_set_string (value, color_config->rgb_profile);
       break;
+    case PROP_GRAY_PROFILE:
+      g_value_set_string (value, color_config->gray_profile);
+      break;
     case PROP_CMYK_PROFILE:
       g_value_set_string (value, color_config->cmyk_profile);
       break;
@@ -415,6 +438,37 @@ gimp_color_config_get_rgb_color_profile (GimpColorConfig  *config,
   return profile;
 }
 
+GimpColorProfile *
+gimp_color_config_get_gray_color_profile (GimpColorConfig  *config,
+                                          GError          **error)
+{
+  GimpColorProfile *profile = NULL;
+
+  g_return_val_if_fail (GIMP_IS_COLOR_CONFIG (config), NULL);
+  g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+  if (config->gray_profile)
+    {
+      GFile *file = g_file_new_for_path (config->gray_profile);
+
+      profile = gimp_color_profile_new_from_file (file, error);
+
+      if (profile && ! gimp_color_profile_is_gray (profile))
+        {
+          g_object_unref (profile);
+          profile = NULL;
+
+          g_set_error (error, GIMP_CONFIG_ERROR, 0,
+                       _("Color profile '%s' is not for GRAY color space."),
+                       gimp_file_get_utf8_name (file));
+        }
+
+      g_object_unref (file);
+    }
+
+  return profile;
+}
+
 GimpColorProfile *
 gimp_color_config_get_cmyk_color_profile (GimpColorConfig  *config,
                                           GError          **error)
@@ -530,6 +584,47 @@ gimp_color_config_set_rgb_profile (GimpColorConfig  *config,
     }
 }
 
+static void
+gimp_color_config_set_gray_profile (GimpColorConfig  *config,
+                                    const gchar      *filename,
+                                    GError          **error)
+{
+  gboolean success = TRUE;
+
+  if (filename)
+    {
+      GimpColorProfile *profile;
+      GFile            *file = g_file_new_for_path (filename);
+
+      profile = gimp_color_profile_new_from_file (file, error);
+
+      if (profile)
+        {
+          if (! gimp_color_profile_is_gray (profile))
+            {
+              g_set_error (error, GIMP_CONFIG_ERROR, 0,
+                           _("Color profile '%s' is not for GRAY color space."),
+                           gimp_file_get_utf8_name (file));
+              success = FALSE;
+            }
+
+          g_object_unref (profile);
+        }
+      else
+        {
+          success = FALSE;
+        }
+
+      g_object_unref (file);
+    }
+
+  if (success)
+    {
+      g_free (config->gray_profile);
+      config->gray_profile = g_strdup (filename);
+    }
+}
+
 static void
 gimp_color_config_set_cmyk_profile (GimpColorConfig  *config,
                                     const gchar      *filename,

libgimpconfig/gimpcolorconfig.h

@@ -58,12 +58,13 @@ struct _GimpColorConfig
   gboolean                    display_use_black_point_compensation;
   gboolean                    simulation_use_black_point_compensation;
 
+  gchar                      *gray_profile;
+
   /*< private >*/
   /* Padding for future expansion */
 #if (GLIB_SIZEOF_VOID_P == 8)
-  void (* _gimp_reserved2) (void);
-#endif
   void (* _gimp_reserved3) (void);
+#endif
   void (* _gimp_reserved4) (void);
   void (* _gimp_reserved5) (void);
   void (* _gimp_reserved6) (void);
@@ -81,6 +82,8 @@ GType              gimp_color_config_get_type                  (void) G_GNUC_CON
 
 GimpColorProfile * gimp_color_config_get_rgb_color_profile     (GimpColorConfig  *config,
                                                                 GError          **error);
+GimpColorProfile * gimp_color_config_get_gray_color_profile    (GimpColorConfig  *config,
+                                                                GError          **error);
 GimpColorProfile * gimp_color_config_get_cmyk_color_profile    (GimpColorConfig  *config,
                                                                 GError          **error);
 GimpColorProfile * gimp_color_config_get_display_color_profile (GimpColorConfig  *config,

libgimpconfig/gimpconfig.def

@@ -1,6 +1,7 @@
 EXPORTS
 	gimp_color_config_get_cmyk_color_profile
 	gimp_color_config_get_display_color_profile
+	gimp_color_config_get_gray_color_profile
 	gimp_color_config_get_printer_color_profile
 	gimp_color_config_get_rgb_color_profile
 	gimp_color_config_get_type