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Thumbnail cache file format depending on existance of alpha layer

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Use PNG if image has alpha layer, JPG if not. Fixes issue #209
This commit is contained in:
Bert Münnich 2015-07-22 21:08:00 +02:00
parent 9264a65c19
commit d8114e841c
2 changed files with 9 additions and 5 deletions
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2
Makefile
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@ -1,4 +1,4 @@
VERSION := git-20150518
VERSION := git-20150722
PREFIX := /usr/local
MANPREFIX := $(PREFIX)/share/man

12
thumbs.c
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@ -48,9 +48,9 @@ char* tns_cache_filepath(const char *filepath)
if (strncmp(filepath, cache_dir, strlen(cache_dir)) != 0) {
/* don't cache images inside the cache directory! */
len = strlen(cache_dir) + strlen(filepath) + 6;
len = strlen(cache_dir) + strlen(filepath) + 2;
cfile = (char*) s_malloc(len);
snprintf(cfile, len, "%s/%s.jpg", cache_dir, filepath + 1);
snprintf(cfile, len, "%s/%s", cache_dir, filepath + 1);
}
return cfile;
}
@ -101,8 +101,12 @@ void tns_cache_write(Imlib_Image im, const char *filepath, bool force)
}
if (err == 0) {
imlib_context_set_image(im);
imlib_image_set_format("jpg");
imlib_image_attach_data_value("quality", NULL, 90, NULL);
if (imlib_image_has_alpha()) {
imlib_image_set_format("png");
} else {
imlib_image_set_format("jpg");
imlib_image_attach_data_value("quality", NULL, 90, NULL);
}
imlib_save_image_with_error_return(cfile, &err);
}
if (err == 0) {