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Font features demo improvements

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Use font-provided names for ssNN and cvNN features.

But good luck finding a font that has these!
This commit is contained in:
Matthias Clasen 2022-07-03 01:19:19 -04:00
parent 5d05daaed0
commit 5ba8fc8f10
1 changed files with 89 additions and 9 deletions
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98
demos/gtk-demo/font_features.c
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@ -278,25 +278,36 @@ set:
range->language = language;
}
static const char *
static char *
get_feature_display_name (unsigned int tag)
{
int i;
static char buf[5] = { 0, };
if (tag == MAKE_TAG ('x', 'x', 'x', 'x'))
return _("Default");
return g_strdup (_("Default"));
hb_tag_to_string (tag, buf);
if (g_str_has_prefix (buf, "ss") && g_ascii_isdigit (buf[2]) && g_ascii_isdigit (buf[3]))
{
int num = (buf[2] - '0') * 10 + (buf[3] - '0');
return g_strdup_printf (g_dpgettext2 (NULL, "OpenType layout", "Stylistic Set %d"), num);
}
else if (g_str_has_prefix (buf, "cv") && g_ascii_isdigit (buf[2]) && g_ascii_isdigit (buf[3]))
{
int num = (buf[2] - '0') * 10 + (buf[3] - '0');
return g_strdup_printf (g_dpgettext2 (NULL, "OpenType layout", "Character Variant %d"), num);
}
for (i = 0; i < G_N_ELEMENTS (open_type_layout_features); i++)
{
if (tag == open_type_layout_features[i].tag)
return g_dpgettext2 (NULL, "OpenType layout", open_type_layout_features[i].name);
return g_strdup (g_dpgettext2 (NULL, "OpenType layout", open_type_layout_features[i].name));
}
hb_tag_to_string (tag, buf);
g_warning ("unknown OpenType layout feature tag: %s", buf);
return buf;
return g_strdup (buf);
}
static void
@ -367,10 +378,13 @@ add_check_group (GtkWidget *box,
GtkWidget *feat;
FeatureItem *item;
GtkGesture *gesture;
char *name;
tag = hb_tag_from_string (tags[i], -1);
feat = gtk_check_button_new_with_label (get_feature_display_name (tag));
name = get_feature_display_name (tag);
feat = gtk_check_button_new_with_label (name);
g_free (name);
set_inconsistent (GTK_CHECK_BUTTON (feat), TRUE);
g_signal_connect (feat, "notify::active", G_CALLBACK (update_display), NULL);
@ -422,12 +436,12 @@ add_radio_group (GtkWidget *box,
unsigned int tag;
GtkWidget *feat;
FeatureItem *item;
const char *name;
char *name;
tag = hb_tag_from_string (tags[i], -1);
name = get_feature_display_name (tag);
feat = gtk_check_button_new_with_label (name ? name : _("Default"));
g_free (name);
if (group_button == NULL)
group_button = feat;
else
@ -868,6 +882,24 @@ update_script_combo (void)
gtk_combo_box_set_active_iter (GTK_COMBO_BOX (demo->script_lang), 0);
}
static char *
get_name (hb_face_t *hbface,
hb_ot_name_id_t id)
{
unsigned int len;
char *text;
if (id == HB_OT_NAME_ID_INVALID)
return NULL;
len = hb_ot_name_get_utf8 (hbface, id, HB_LANGUAGE_INVALID, NULL, NULL);
len++;
text = g_new (char, len);
hb_ot_name_get_utf8 (hbface, id, HB_LANGUAGE_INVALID, &len, text);
return text;
}
static void
update_features (void)
{
@ -941,12 +973,55 @@ update_features (void)
for (j = 0; j < count; j++)
{
#if 0
char buf[5];
hb_tag_to_string (features[j], buf);
buf[4] = 0;
#if 0
g_print ("%s present in %s\n", buf, i == 0 ? "GSUB" : "GPOS");
#endif
if (g_str_has_prefix (buf, "ss") || g_str_has_prefix (buf, "cv"))
{
unsigned int feature_index;
hb_ot_name_id_t label_id, tooltip_id, sample_id, first_param_id;
unsigned int num_params;
hb_ot_layout_language_find_feature (hb_face,
tables[i],
script_index,
lang_index,
features[j],
&feature_index);
if (hb_ot_layout_feature_get_name_ids (hb_face,
tables[i],
feature_index,
&label_id,
&tooltip_id,
&sample_id,
&num_params,
&first_param_id))
{
char *label = get_name (hb_face, label_id);
if (label)
{
for (l = demo->feature_items; l; l = l->next)
{
FeatureItem *item = l->data;
if (item->tag == features[j])
{
gtk_check_button_set_label (GTK_CHECK_BUTTON (item->feat), label);
break;
}
}
}
g_free (label);
}
}
for (l = demo->feature_items; l; l = l->next)
{
FeatureItem *item = l->data;
@ -1710,6 +1785,11 @@ do_font_features (GtkWidget *do_widget)
"ss07", "ss08", "ss09", "ss10", "ss11", "ss12",
"ss13", "ss14", "ss15", "ss16", "ss17", "ss18",
"ss19", "ss20", NULL });
add_check_group (demo->feature_list, _("Character Variants"),
(const char *[]){ "cv01", "cv02", "cv03", "cv04", "cv05", "cv06",
"cv07", "cv08", "cv09", "cv10", "cv11", "cv12",
"cv13", "cv14", "cv15", "cv16", "cv17", "cv18",
"cv19", "cv20", NULL });
add_check_group (demo->feature_list, _("Mathematical"),
(const char *[]){ "dtls", "flac", "mgrk", "ssty", NULL });
add_check_group (demo->feature_list, _("Optical Bounds"),