[gegl] buffer: make gegl_buffer_set_color_from_pixel public

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 443e0c1c3b80fe05b6b6c01b5857dfc570fe65c5
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Sep 27 14:22:16 2018 +0200

    buffer: make gegl_buffer_set_color_from_pixel public

 gegl/buffer/gegl-buffer-access.c | 19 ++++++++++---------
 gegl/buffer/gegl-buffer.h        | 17 +++++++++++++++++
 2 files changed, 27 insertions(+), 9 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index 3525a4258..7e8f463de 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -2774,17 +2774,19 @@ gegl_buffer_set_pattern (GeglBuffer          *buffer,
   gegl_free (pattern_data);
 }
 
-static void
-gegl_buffer_set_value (GeglBuffer          *dst,
-                       const GeglRectangle *dst_rect,
-                       uint8_t             *value,
-                       const Babl          *pixel_format)
+void
+gegl_buffer_set_color_from_pixel (GeglBuffer          *dst,
+                                  const GeglRectangle *dst_rect,
+                                  const uint8_t       *pixel,
+                                  const Babl          *pixel_format)
 {
   GeglBufferIterator *i;
   gint                bpp;
 
   g_return_if_fail (GEGL_IS_BUFFER (dst));
-  g_return_if_fail (value);
+  g_return_if_fail (pixel);
+  if (pixel_format == NULL)
+    pixel_format = dst->soft_format;
 
   if (!dst_rect)
     {
@@ -2803,11 +2805,10 @@ gegl_buffer_set_value (GeglBuffer          *dst,
                                 GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
   while (gegl_buffer_iterator_next (i))
     {
-      gegl_memset_pattern (i->items[0].data, value, bpp, i->length);
+      gegl_memset_pattern (i->items[0].data, pixel, bpp, i->length);
     }
 }
 
-
 void
 gegl_buffer_set_color (GeglBuffer          *dst,
                        const GeglRectangle *dst_rect,
@@ -2818,7 +2819,7 @@ gegl_buffer_set_color (GeglBuffer          *dst,
   g_return_if_fail (color);
 
   gegl_color_get_pixel (color, dst->soft_format, pixel);
-  gegl_buffer_set_value (dst, dst_rect, &pixel[0], dst->soft_format);
+  gegl_buffer_set_color_from_pixel (dst, dst_rect, &pixel[0], dst->soft_format);
 }
 
 GeglBuffer *
diff --git a/gegl/buffer/gegl-buffer.h b/gegl/buffer/gegl-buffer.h
index a830cb495..4253ec52f 100644
--- a/gegl/buffer/gegl-buffer.h
+++ b/gegl/buffer/gegl-buffer.h
@@ -304,6 +304,23 @@ void            gegl_buffer_set_color         (GeglBuffer          *buffer,
                                                GeglColor           *color);
 
 
+
+/**
+ * gegl_buffer_set_color_from_pixel:
+ * @buffer: a #GeglBuffer
+ * @rect: a rectangular region to fill with a color.
+ * @pixel: pointer to the data of a single pixel
+ * @pixel_format: the babl format of the pixel, if missing - the soft format of dst.
+ *
+ * Sets the region covered by rect to the the provided pixel.
+ */
+void
+gegl_buffer_set_color_from_pixel (GeglBuffer          *buffer,
+                                  const GeglRectangle *rect,
+                                  const guchar        *pixel,
+                                  const Babl          *pixel_format);
+
+
 /**
  * gegl_buffer_set_pattern:
  * @buffer: a #GeglBuffer