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Issue #189 - Store channel colors when saving as PSD 

In file-psd, write a DisplayInfo image resource with the color/
opacity of all channels.
This commit is contained in:
Ell 2020-04-26 22:56:11 +03:00
parent ac19f6413b
commit 281188e169
1 changed files with 64 additions and 0 deletions
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64
plug-ins/file-psd/psd-save.c
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@ -705,6 +705,70 @@ save_resources (FILE *fd,
write_gchar (fd, 0, "pad byte");
}
/* --------------- Write Channel properties --------------- */
if (PSDImageData.nChannels > 0 ||
gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)))
{
xfwrite (fd, "8BIM", 4, "imageresources signature");
write_gint16 (fd, 0x0435, "0x0435 Id"); /* 1077 */
/* write_pascalstring (fd, Name, "Id name"); */
write_gint16 (fd, 0, "Id name"); /* Set to null string (two zeros) */
write_gint32 (fd,
4 +
13 * (gimp_drawable_has_alpha (
GIMP_DRAWABLE (PSDImageData.merged_layer)) +
PSDImageData.nChannels),
"0x0435 resource size");
/* The function of the first 4 bytes is unclear. As per
* load_resource_1077() in psd-image-res-load.c, it seems to be a version
* number that is always one.
*/
write_gint32 (fd, 1, "0x0435 version");
/* Write all channel properties */
#define DOUBLE_TO_INT16(x) ROUND (SAFE_CLAMP (x, 0.0, 1.0) * 0xffff)
/* if the merged_image contains transparency, write its properties first */
if (gimp_drawable_has_alpha (GIMP_DRAWABLE (PSDImageData.merged_layer)))
{
write_gint16 (fd, PSD_CS_RGB, "channel color space");
write_gint16 (fd, DOUBLE_TO_INT16 (1.0), "channel color r");
write_gint16 (fd, DOUBLE_TO_INT16 (0.0), "channel color g");
write_gint16 (fd, DOUBLE_TO_INT16 (0.0), "channel color b");
write_gint16 (fd, 0, "channel color padding");
write_gint16 (fd, 100, "channel opacity");
write_gchar (fd, 1, "channel mode");
}
for (iter = g_list_last (PSDImageData.lChannels); iter; iter = iter->prev)
{
GimpChannel *channel = iter->data;
GimpRGB color;
gdouble opacity;
gimp_channel_get_color (channel, &color);
opacity = gimp_channel_get_opacity (channel);
write_gint16 (fd, PSD_CS_RGB, "channel color space");
write_gint16 (fd, DOUBLE_TO_INT16 (color.r), "channel color r");
write_gint16 (fd, DOUBLE_TO_INT16 (color.g), "channel color g");
write_gint16 (fd, DOUBLE_TO_INT16 (color.b), "channel color b");
write_gint16 (fd, 0, "channel color padding");
write_gint16 (fd, ROUND (opacity), "channel opacity");
write_gchar (fd, 1, "channel mode");
}
#undef DOUBLE_TO_INT16
/* Pad if length is odd */
if (ftell (fd) & 1)
write_gchar (fd, 0, "pad byte");
}
/* --------------- Write Guides --------------- */
if (gimp_image_find_next_guide (image, 0))
{