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app: implement gimp_layer_add_alpha() with gegl_buffer_copy()

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This commit is contained in:
Michael Natterer
2012-03-16 00:22:12 +01:00
parent dc8d6a3977
commit 5413949851
1 changed files with 6 additions and 16 deletions
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22
app/core/gimplayer.c
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@ -1878,8 +1878,8 @@ gimp_layer_add_alpha (GimpLayer *layer)
{
GimpItem *item;
GimpDrawable *drawable;
PixelRegion srcPR, destPR;
TileManager *new_tiles;
GeglBuffer *dest_buffer;
GimpImageType new_type;
g_return_if_fail (GIMP_IS_LAYER (layer));
@ -1892,27 +1892,17 @@ gimp_layer_add_alpha (GimpLayer *layer)
new_type = gimp_drawable_type_with_alpha (drawable);
/* Allocate the new tiles */
new_tiles = tile_manager_new (gimp_item_get_width (item),
gimp_item_get_height (item),
GIMP_IMAGE_TYPE_BYTES (new_type));
/* Configure the pixel regions */
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
FALSE);
pixel_region_init (&destPR, new_tiles,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
TRUE);
dest_buffer = gimp_tile_manager_create_buffer (new_tiles, TRUE);
/* Add an alpha channel */
add_alpha_region (&srcPR, &destPR);
gegl_buffer_copy (gimp_drawable_get_read_buffer (drawable), NULL,
dest_buffer, NULL);
g_object_unref (dest_buffer);
/* Set the new tiles */
gimp_drawable_set_tiles (GIMP_DRAWABLE (layer),
gimp_item_is_attached (GIMP_ITEM (layer)),
C_("undo-type", "Add Alpha Channel"),