[gimp] app: add gimp_channel_new_from_buffer() and gimp_layer_mask_new_from_buffer()

[Michael Natterer <mitch src gnome org>]

commit 0d7b10cb745a5f5ce54fe102a219aa88fb37788a
Author: Miroslav Talasek <miroslav talasek seznam cz>
Date:   Tue May 7 23:06:43 2013 +0200

    app: add gimp_channel_new_from_buffer() and gimp_layer_mask_new_from_buffer()

 app/core/gimpchannel.c   |   23 +++++++++++++++++++++++
 app/core/gimpchannel.h   |    5 ++++-
 app/core/gimplayermask.c |   23 +++++++++++++++++++++++
 app/core/gimplayermask.h |   26 +++++++++++++++-----------
 4 files changed, 65 insertions(+), 12 deletions(-)
---
diff --git a/app/core/gimpchannel.c b/app/core/gimpchannel.c
index d719fec..511b6e1 100644
--- a/app/core/gimpchannel.c
+++ b/app/core/gimpchannel.c
@@ -1555,6 +1555,29 @@ gimp_channel_new (GimpImage     *image,
 }
 
 GimpChannel *
+gimp_channel_new_from_buffer (GeglBuffer    *buffer,
+                              GimpImage     *image,
+                              const gchar   *name,
+                              const GimpRGB *color)
+{
+  GimpChannel *channel;
+  GeglBuffer  *dest;
+
+  g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
+  g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+
+  channel = gimp_channel_new (image,
+                              gegl_buffer_get_width  (buffer),
+                              gegl_buffer_get_height (buffer),
+                              name, color);
+
+  dest = gimp_drawable_get_buffer (GIMP_DRAWABLE (channel));
+  gegl_buffer_copy (buffer, NULL, dest, NULL);
+
+  return channel;
+}
+
+GimpChannel *
 gimp_channel_new_from_alpha (GimpImage     *image,
                              GimpDrawable  *drawable,
                              const gchar   *name,
diff --git a/app/core/gimpchannel.h b/app/core/gimpchannel.h
index b0255c1..b0bef97 100644
--- a/app/core/gimpchannel.h
+++ b/app/core/gimpchannel.h
@@ -128,7 +128,10 @@ GimpChannel * gimp_channel_new                (GimpImage         *image,
                                                gint               height,
                                                const gchar       *name,
                                                const GimpRGB     *color);
-
+GimpChannel * gimp_channel_new_from_buffer    (GeglBuffer        *buffer,
+                                               GimpImage         *image,
+                                               const gchar       *name,
+                                               const GimpRGB     *color);
 GimpChannel * gimp_channel_new_from_alpha     (GimpImage         *image,
                                                GimpDrawable      *drawable,
                                                const gchar       *name,
diff --git a/app/core/gimplayermask.c b/app/core/gimplayermask.c
index d54d9fb..67e7114 100644
--- a/app/core/gimplayermask.c
+++ b/app/core/gimplayermask.c
@@ -211,6 +211,29 @@ gimp_layer_mask_new (GimpImage     *image,
   return layer_mask;
 }
 
+GimpLayerMask *
+gimp_layer_mask_new_from_buffer (GeglBuffer    *buffer,
+                                 GimpImage     *image,
+                                 const gchar   *name,
+                                 const GimpRGB *color)
+{
+  GimpLayerMask *layer_mask;
+  GeglBuffer    *dest;
+
+  g_return_val_if_fail (GEGL_IS_BUFFER (buffer), NULL);
+  g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
+
+  layer_mask = gimp_layer_mask_new (image,
+                                    gegl_buffer_get_width  (buffer),
+                                    gegl_buffer_get_height (buffer),
+                                    name, color);
+
+  dest = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer_mask));
+  gegl_buffer_copy (buffer, NULL, dest, NULL);
+
+  return layer_mask;
+}
+
 void
 gimp_layer_mask_set_layer (GimpLayerMask *layer_mask,
                            GimpLayer     *layer)
diff --git a/app/core/gimplayermask.h b/app/core/gimplayermask.h
index 29d4ac6..2fbed71 100644
--- a/app/core/gimplayermask.h
+++ b/app/core/gimplayermask.h
@@ -47,17 +47,21 @@ struct _GimpLayerMaskClass
 
 /*  function declarations  */
 
-GType           gimp_layer_mask_get_type  (void) G_GNUC_CONST;
-
-GimpLayerMask * gimp_layer_mask_new       (GimpImage           *image,
-                                           gint                 width,
-                                           gint                 height,
-                                           const gchar         *name,
-                                           const GimpRGB       *color);
-
-void            gimp_layer_mask_set_layer (GimpLayerMask       *layer_mask,
-                                           GimpLayer           *layer);
-GimpLayer     * gimp_layer_mask_get_layer (const GimpLayerMask *layer_mask);
+GType           gimp_layer_mask_get_type        (void) G_GNUC_CONST;
+
+GimpLayerMask * gimp_layer_mask_new             (GimpImage           *image,
+                                                 gint                 width,
+                                                 gint                 height,
+                                                 const gchar         *name,
+                                                 const GimpRGB       *color);
+GimpLayerMask * gimp_layer_mask_new_from_buffer (GeglBuffer          *buffer,
+                                                 GimpImage           *image,
+                                                 const gchar         *name,
+                                                 const GimpRGB       *color);
+
+void            gimp_layer_mask_set_layer       (GimpLayerMask       *layer_mask,
+                                                 GimpLayer           *layer);
+GimpLayer     * gimp_layer_mask_get_layer       (const GimpLayerMask *layer_mask);
 
 
 #endif /* __GIMP_LAYER_MASK_H__ */