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Issue #12573: Color Picker selects the wrong color on indexed images.

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The code to retrieve the alpha-variant of the indexed palette was wrong,
and therefore babl was creating a brand-new palette fornat. Not sure if
the palette was empty, or was random or anything. It's even weird it
even produced somewhat resembling colors.
This commit is contained in:
Jehan 2024-12-21 12:47:17 +01:00
parent dd4b687d36
commit 4b582bdba8
1 changed files with 9 additions and 0 deletions
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9
libgimpcolor/gimpcolor.c
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@ -613,8 +613,17 @@ gimp_babl_format_get_with_alpha (const Babl *format)
if (babl_format_is_palette (format))
{
gchar *alpha_palette = g_strdup (model);
gchar *last_hyphen;
/* Retrieving the alpha variant of the same palette.
* 1. The alpha variant starts with '\'.
* 2. Removing the last part of the name which represents the
* space because babl will add it itself.
*/
alpha_palette[0] = '\\';
last_hyphen = g_strrstr (alpha_palette, "-");
if (last_hyphen != NULL)
*last_hyphen = '\0';
babl_new_palette_with_space (alpha_palette, babl_format_get_space (format),
NULL, &new_format);
g_free (alpha_palette);