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[hb-shape/view] Add --list-variations

This commit is contained in:
Behdad Esfahbod 2023-01-15 09:46:19 -07:00
parent d015e9016c
commit 9abc21072b
1 changed files with 46 additions and 0 deletions
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46
util/font-options.hh
View File

@ -57,6 +57,7 @@ struct font_options_t : face_options_t
hb_bool_t sub_font = false;
#ifndef HB_NO_VAR
hb_bool_t list_variations = false;
hb_variation_t *variations = nullptr;
unsigned int num_variations = 0;
#endif
@ -87,6 +88,10 @@ static struct supported_font_funcs_t {
};
#ifndef HB_NO_VAR
static G_GNUC_NORETURN void _list_variations (hb_face_t *face);
#endif
void
font_options_t::post_parse (GError **error)
{
@ -156,10 +161,50 @@ font_options_t::post_parse (GError **error)
hb_font_set_scale (old_font, scale_x * 2, scale_y * 2);
hb_font_destroy (old_font);
}
#ifndef HB_NO_VAR
if (list_variations)
_list_variations (face);
#endif
}
#ifndef HB_NO_VAR
static G_GNUC_NORETURN void
_list_variations (hb_face_t *face)
{
hb_vector_t<hb_ot_var_axis_info_t> axes;
unsigned count = hb_ot_var_get_axis_infos (face, 0, nullptr, nullptr);
axes.resize (count);
hb_ot_var_get_axis_infos (face, 0, &count, axes.arrayZ);
auto language = hb_language_get_default ();
printf ("tag: min default max name\n");
for (const auto &axis : axes)
{
if (axis.flags & HB_OT_VAR_AXIS_FLAG_HIDDEN)
continue;
char name[64];
unsigned name_len = sizeof name;
hb_ot_name_get_utf8 (face, axis.name_id,
language,
&name_len, name);
printf ("%c%c%c%c: %g %g %g %s\n",
HB_UNTAG (axis.tag),
(double) axis.min_value,
(double) axis.default_value,
(double) axis.max_value,
name);
}
exit(0);
}
static gboolean
parse_variations (const char *name G_GNUC_UNUSED,
const char *arg,
@ -317,6 +362,7 @@ font_options_t::add_options (option_parser_t *parser)
GOptionEntry entries2[] =
{
{"list-variations", 0, 0, G_OPTION_ARG_NONE, &this->list_variations, "List available font variations and quit", nullptr},
{"variations", 0, 0, G_OPTION_ARG_CALLBACK, (gpointer) &parse_variations, variations_help, "list"},
{nullptr}
};