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app: implement gimp_channel_translate() with GEGL

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This commit is contained in:
Michael Natterer
2012-03-15 10:27:41 +01:00
parent 3814c9f0a6
commit 26c10d9f73
1 changed files with 29 additions and 25 deletions
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46
app/core/gimpchannel.c
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@ -513,8 +513,10 @@ gimp_channel_translate (GimpItem *item,
{
GimpChannel *channel = GIMP_CHANNEL (item);
GimpChannel *tmp_mask = NULL;
GeglBuffer *tmp_buffer = NULL;
gint width, height;
PixelRegion srcPR, destPR;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint x1, y1, x2, y2;
gimp_channel_bounds (channel, &x1, &y1, &x2, &y2);
@ -543,34 +545,36 @@ gimp_channel_translate (GimpItem *item,
*/
tmp_mask = gimp_channel_new_mask (gimp_item_get_image (item),
width, height);
tmp_buffer = gimp_drawable_get_write_buffer (GIMP_DRAWABLE (tmp_mask));
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
x1 - off_x, y1 - off_y, width, height, FALSE);
pixel_region_init (&destPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (tmp_mask)),
0, 0, width, height, TRUE);
copy_region (&srcPR, &destPR);
src_rect.x = x1 - off_x;
src_rect.y = y1 - off_y;
src_rect.width = width;
src_rect.height = height;
dest_rect.x = 0;
dest_rect.y = 0;
gegl_buffer_copy (gimp_drawable_get_read_buffer (GIMP_DRAWABLE (channel)),
&src_rect,
tmp_buffer,
&dest_rect);
}
/* clear the mask */
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
0, 0,
gimp_item_get_width (GIMP_ITEM (channel)),
gimp_item_get_height (GIMP_ITEM (channel)), TRUE);
clear_region (&srcPR);
gegl_buffer_clear (gimp_drawable_get_write_buffer (GIMP_DRAWABLE (channel)),
NULL);
if (width != 0 && height != 0)
{
/* copy the temp mask back to the mask */
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (tmp_mask)),
0, 0, width, height, FALSE);
pixel_region_init (&destPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
x1, y1, width, height, TRUE);
copy_region (&srcPR, &destPR);
dest_rect.x = x1;
dest_rect.y = y1;
gegl_buffer_copy (tmp_buffer,
NULL,
gimp_drawable_get_write_buffer (GIMP_DRAWABLE (channel)),
&dest_rect);
/* free the temporary mask */
g_object_unref (tmp_mask);