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plug-ins: Convert Print Preview for images with higher bit depth

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Resolves #13104
print_preview_get_thumbnail () crashes when trying
to display thumbnails where the image's precision is
higher than 8 BPC. While the plan is to rewrite/replace
this plug-in, for now, we'll duplicate the drawable's
image and convert to 8BPC to prevent issues.
This commit is contained in:
Alx Sa 2025-03-13 23:22:51 +00:00
parent f576531bec
commit 40fe4fc62f
1 changed files with 22 additions and 0 deletions
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22
plug-ins/print/print-preview.c
View file

@ -831,6 +831,28 @@ print_preview_get_thumbnail (GimpDrawable *drawable,
width, height, width, height,
&width, &height, &bpp); &width, &height, &bpp);
/* For now, convert preview of higher bit depth to 8BPC */
if (bpp > 4)
{
GimpImage *temp_image;
GList *layers = NULL;
g_bytes_unref (data);
temp_image =
gimp_image_duplicate (gimp_item_get_image (GIMP_ITEM (drawable)));
gimp_image_convert_precision (temp_image, GIMP_PRECISION_U8_NON_LINEAR);
gimp_image_merge_visible_layers (temp_image, GIMP_CLIP_TO_IMAGE);
layers = gimp_image_list_layers (temp_image);
data = gimp_drawable_get_thumbnail_data (GIMP_DRAWABLE (layers->data),
width, height,
&width, &height, &bpp);
g_list_free (layers);
gimp_image_delete (temp_image);
}
switch (bpp) switch (bpp)
{ {
case 1: case 1: