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commit 232256a0d2383991c65db92eb527c057af76b62d
Author: Kim Woelders <k...@woelders.dk>
AuthorDate: Fri Dec 13 11:27:53 2024 +0100
imlib2_conv: Optionally render image on background before saving
Only useful with transparent input images.
---
src/bin/imlib2_conv.c | 35 +++++++++++++++++++++++++++++++++--
1 file changed, 33 insertions(+), 2 deletions(-)
diff --git a/src/bin/imlib2_conv.c b/src/bin/imlib2_conv.c
index 5dc3004..9e52809 100644
--- a/src/bin/imlib2_conv.c
+++ b/src/bin/imlib2_conv.c
@@ -16,6 +16,11 @@
#include "prog_util.h"
+#define PIXEL_A(argb) (((argb) >> 24) & 0xff)
+#define PIXEL_R(argb) (((argb) >> 16) & 0xff)
+#define PIXEL_G(argb) (((argb) >> 8) & 0xff)
+#define PIXEL_B(argb) (((argb) ) & 0xff)
+
#define DEBUG 0
#if DEBUG
#define Dprintf(fmt...) printf(fmt)
@@ -30,6 +35,7 @@
"\n" \
"OPTIONS:\n" \
" -h : Show this help\n" \
+ " -b 0xRRGGBB : Render on solid background before saving\n" \
" -i key=value : Attach tag with integer value for saver\n" \
" -j key=string : Attach tag with string value for saver\n" \
" -g WxH : Specify output image size\n"
@@ -83,6 +89,7 @@ main(int argc, char **argv)
int opt, err;
const char *fin, *fout;
int wo, ho;
+ unsigned int bgcol;
char *dot;
Imlib_Image im;
int cnt, save_cnt;
@@ -91,11 +98,12 @@ main(int argc, char **argv)
double dt;
wo = ho = 0;
+ bgcol = 0x80000000;
show_time = false;
save_cnt = 1;
t0 = 0;
- while ((opt = getopt(argc, argv, "hi:j:g:n:")) != -1)
+ while ((opt = getopt(argc, argv, "b:hi:j:g:n:")) != -1)
{
switch (opt)
{
@@ -103,6 +111,9 @@ main(int argc, char **argv)
case 'h':
usage();
exit(0);
+ case 'b':
+ sscanf(optarg, "%x", &bgcol);
+ break;
case 'i':
case 'j':
break; /* Ignore this time around */
@@ -152,11 +163,31 @@ main(int argc, char **argv)
imlib_free_image_and_decache();
#endif
imlib_context_set_image(im2);
+ im = im2;
+ }
+
+ wo = imlib_image_get_width();
+ ho = imlib_image_get_height();
+
+ if (bgcol != 0x80000000)
+ {
+ Imlib_Image im2;
+ im2 = imlib_create_image(wo, ho);
+ if (!im2)
+ {
+ fprintf(stderr, "*** Error: Failed to create background image\n");
+ return 1;
+ }
+ imlib_context_set_image(im2);
+ imlib_context_set_color(PIXEL_R(bgcol), PIXEL_G(bgcol), PIXEL_B(bgcol),
+ 255);
+ imlib_image_fill_rectangle(0, 0, wo, ho);
+ imlib_blend_image_onto_image(im, 1, 0, 0, wo, wo, 0, 0, wo, wo);
}
/* Re-parse options to attach parameters to be used by savers */
optind = 1;
- while ((opt = getopt(argc, argv, "hi:j:g:n:")) != -1)
+ while ((opt = getopt(argc, argv, "b:hi:j:g:n:")) != -1)
{
switch (opt)
{
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