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[hb-info] Add --get-baseline

This commit is contained in:
Behdad Esfahbod 2023-01-20 11:04:22 -07:00
parent b77baa31c3
commit 2590578162
1 changed files with 49 additions and 1 deletions
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50
util/hb-info.cc
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@ -70,6 +70,7 @@ struct info_t
{"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Show extents", nullptr},
{"get-metric", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_metric, "Get metric", "metric tag; eg. 'hasc'"},
{"get-baseline", 0, 0, G_OPTION_ARG_STRING_ARRAY,&this->get_baseline, "Get baseline", "baseline tag; eg. 'hang'"},
{"list-all", 0, 0, G_OPTION_ARG_NONE, &this->list_all, "List all long information", nullptr},
{"list-names", 0, 0, G_OPTION_ARG_NONE, &this->list_names, "List names", nullptr},
@ -125,6 +126,7 @@ struct info_t
hb_bool_t show_extents = false;
char **get_metric = nullptr;
char **get_baseline = nullptr;
hb_bool_t list_all = false;
hb_bool_t list_names = false;
@ -204,6 +206,7 @@ struct info_t
if (show_extents) _show_extents ();
if (get_metric) _get_metric ();
if (get_baseline) _get_baseline ();
if (list_names) _list_names ();
if (list_tables) _list_tables ();
@ -333,7 +336,7 @@ struct info_t
hb_position_t position;
if (verbose)
printf ("%c%c%c%c: ", HB_UNTAG (tag));
printf ("Metric %c%c%c%c: ", HB_UNTAG (tag));
if (hb_ot_metrics_get_position (font, tag, &position))
printf ("%d\n", position);
@ -351,6 +354,51 @@ struct info_t
}
}
void _get_baseline ()
{
hb_tag_t script_tags[HB_OT_MAX_TAGS_PER_SCRIPT];
hb_tag_t language_tags[HB_OT_MAX_TAGS_PER_LANGUAGE];
unsigned script_count = HB_OT_MAX_TAGS_PER_SCRIPT;
unsigned language_count = HB_OT_MAX_TAGS_PER_LANGUAGE;
hb_ot_tags_from_script_and_language (script, language,
&script_count, script_tags,
&language_count, language_tags);
hb_tag_t script_tag = script_count ? script_tags[script_count - 1] : HB_TAG_NONE;
hb_tag_t language_tag = language_count ? language_tags[0] : HB_TAG_NONE;
if (ot_script_str)
script_tag = hb_tag_from_string (ot_script_str, -1);
if (ot_language_str)
language_tag = hb_tag_from_string (ot_language_str, -1);
bool fallback = false;
for (char **p = get_baseline; *p; p++)
{
hb_ot_layout_baseline_tag_t tag = (hb_ot_layout_baseline_tag_t) hb_tag_from_string (*p, -1);
hb_position_t position;
if (verbose)
printf ("Baseline %c%c%c%c: ", HB_UNTAG (tag));
if (hb_ot_layout_get_baseline (font, tag, direction, script_tag, language_tag, &position))
printf ("%d\n", position);
else
{
hb_ot_layout_get_baseline_with_fallback (font, tag, direction, script_tag, language_tag, &position);
printf ("%d *\n", position);
fallback = true;
}
}
if (verbose && fallback)
{
printf ("\n[*] Fallback value\n");
}
}
void _list_names ()
{
if (verbose)