int8_t advance;
};
+struct ao_text_metrics {
+ int16_t width;
+ int16_t height;
+ int16_t x_off;
+ int16_t y_off;
+ int16_t advance;
+};
+
struct ao_font {
const uint8_t *bytes;
const uint16_t *pos;
uint32_t fill,
uint8_t rop);
+int16_t
+ao_text_width(const struct ao_font *font,
+ const char *string);
+
void
ao_logo_poly(struct ao_bitmap *dst,
const struct ao_transform *transform,
--- /dev/null
+/*
+ * Copyright © 2024 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <ao_draw.h>
+#include <ao_draw_int.h>
+#include "ao_font.h"
+#include <string.h>
+#include <stdio.h>
+
+int16_t
+ao_text_width(const struct ao_font *font,
+ const char *string)
+{
+ char c;
+ int16_t x = 0;
+
+ while ((c = *string++)) {
+ if (font->metrics) {
+ x += font->metrics[(uint8_t) c].advance;
+ } else {
+ x += font->max_width;
+ }
+ }
+ return x;
+}