[gimp] app: implement GimpColorManaged::get_color_profile() in GimpImage

[Michael Natterer <mitch src gnome org>]

commit 86c05d0a483bc497616b74e8854d1fdd206220ff
Author: Michael Natterer <mitch gimp org>
Date:   Tue May 26 08:05:25 2015 +0200

    app: implement GimpColorManaged::get_color_profile() in GimpImage
    
    Never return NULL. Instead, return either the built-in sRGB or linear
    RGB profile.

 app/core/gimpimage.c |   26 +++++++++++++++++++++++++-
 1 files changed, 25 insertions(+), 1 deletions(-)
---
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index baf707d..6a27c56 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -180,6 +180,8 @@ static void     gimp_image_real_colormap_changed (GimpImage         *image,
 static const guint8 *
         gimp_image_color_managed_get_icc_profile (GimpColorManaged  *managed,
                                                   gsize             *len);
+static GimpColorProfile
+      gimp_image_color_managed_get_color_profile (GimpColorManaged  *managed);
 
 static void        gimp_image_projectable_flush  (GimpProjectable   *projectable,
                                                   gboolean           invalidate_preview);
@@ -627,7 +629,8 @@ gimp_image_class_init (GimpImageClass *klass)
 static void
 gimp_color_managed_iface_init (GimpColorManagedInterface *iface)
 {
-  iface->get_icc_profile = gimp_image_color_managed_get_icc_profile;
+  iface->get_icc_profile   = gimp_image_color_managed_get_icc_profile;
+  iface->get_color_profile = gimp_image_color_managed_get_color_profile;
 }
 
 static void
@@ -1382,6 +1385,27 @@ gimp_image_color_managed_get_icc_profile (GimpColorManaged *managed,
   return NULL;
 }
 
+static GimpColorProfile
+gimp_image_color_managed_get_color_profile (GimpColorManaged *managed)
+{
+  GimpImage        *image = GIMP_IMAGE (managed);
+  GimpColorProfile  profile;
+
+  profile = gimp_image_get_profile (image, NULL);
+
+  if (! profile)
+    {
+      const Babl *format = gimp_image_get_layer_format (image, FALSE);
+
+      if (gimp_babl_format_get_linear (format))
+        profile = gimp_lcms_create_linear_rgb_profile ();
+      else
+        profile = gimp_lcms_create_srgb_profile ();
+    }
+
+  return profile;
+}
+
 static void
 gimp_image_projectable_flush (GimpProjectable *projectable,
                               gboolean         invalidate_preview)