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#include <stdbool.h>
#include <stdlib.h>
#include <libHX/option.h>
static double dpi = 96;
static void px2any(const struct HXoptcb *cbi)
{
double px = cbi->data_dbl;
printf("%f px are (at %f DPI) equal to:\n", px, dpi);
printf("\t%f inch\n", px / dpi);
printf("\t%f pt\n", px * 72 / dpi);
printf("\t%f cm\n", px * 2.54 / dpi);
}
static void pt2any(const struct HXoptcb *cbi)
{
double pt = cbi->data_dbl;
printf("%f pt are equal to:\n", pt);
printf("\t%f inch\n", pt / 72);
printf("\t%f px (at %f DPI)\n", dpi * pt / 72, dpi);
printf("\t%f cm\n", pt * 2.54 / 72);
}
static const struct HXoption option_table[] = {
{.sh = 'D', .ln = "dpi", .type = HXTYPE_DOUBLE, .ptr = &dpi,
.help = "Resolution (default: 96 dpi)"},
{.sh = 'P', .ln = "px", .type = HXTYPE_DOUBLE, .cb = px2any},
{.sh = 'p', .ln = "pt", .type = HXTYPE_DOUBLE, .cb = pt2any},
HXOPT_AUTOHELP,
HXOPT_TABLEEND,
};
static bool get_options(int *argc, const char ***argv)
{
}
int main(int argc, const char **argv)
{
int ret;
ret = HX_getopt(option_table, &argc, &argv, HXOPT_USAGEONERR);
if (ret != HXOPT_ERR_SUCCESS)
return EXIT_FAILURE;
}
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