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comparison nuklear_ui/font_web.c @ 2629:537a2f3b880d

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Add font_web.c that was missed on a previous commit
author Michael Pavone <pavone@retrodev.com>
date Sun, 23 Feb 2025 00:08:45 -0800
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2628:32ce6c588bc9 2629:537a2f3b880d
1 #include <stdint.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <stddef.h>
5 #include "sfnt.h"
6 #include "../util.h"
7
8 uint8_t *default_font(uint32_t *size_out)
9 {
10 sfnt_container *sfnt = NULL;
11 FILE *f = fopen("DroidSans.ttf", "rb");
12 if (!f) {
13 fprintf(stderr, "Failed to open font file DroidSans.ttf\n");
14 return NULL;
15 }
16 long size = file_size(f);
17 uint8_t *buffer = malloc(size);
18 if (size != fread(buffer, 1, size, f)) {
19 fprintf(stderr, "Failed to read font file\n");
20 goto cleanup;
21 }
22 fclose(f);
23 f = NULL;
24 sfnt = load_sfnt(buffer, size);
25 if (!sfnt) {
26 fprintf(stderr, "File does not contain SFNT resources\n");
27 goto cleanup;
28 }
29 for (uint8_t j = 0; j < sfnt->num_fonts; j++)
30 {
31 if (sfnt_has_truetype_glyphs(sfnt->tables + j)) {
32 return sfnt_flatten(sfnt->tables + j, size_out);
33 }
34 fprintf(stderr, "Font %s in file doesn't have TrueType glyphs\n", sfnt_name(sfnt->tables + j, SFNT_POSTSCRIPT));
35 }
36 cleanup:
37 if (sfnt) {
38 sfnt_free(sfnt);
39 } else {
40 free(buffer);
41 }
42 if (f) {
43 fclose(f);
44 }
45 return NULL;
46 }