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annotate nuklear_ui/font.c @ 1527:4f6e8acd7b6a nuklear_ui

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Added support for TTC and dfont format true type fonts. More robust font selection on Windows
author Michael Pavone <pavone@retrodev.com>
date Tue, 06 Mar 2018 21:27:12 -0800
parents c5c022c7aa54
children 24508cb54f87
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rev   line source
1474
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1 #include <stdio.h>
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2 #include <stdlib.h>
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4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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3 #include <stdint.h>
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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4 #include "../util.h"
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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5 #include "sfnt.h"
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6
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7 char *default_font_path(void)
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8 {
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9 FILE *fc_pipe = popen("fc-match -f '%{file}'", "r");
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10 if (!fc_pipe) {
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11 return NULL;
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12 }
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13 size_t buf_size = 128;
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14 char *buffer = NULL;
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15 size_t total = 0, read = 0;
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16 do {
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17 total += read;
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18 buf_size *= 2;
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19 buffer = realloc(buffer, buf_size);
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20 if (!buffer) {
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21 return NULL;
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22 }
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23 read = fread(buffer, 1, buf_size - total, fc_pipe);
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24 } while (read == (buf_size - total));
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25 total += read;
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26 buffer[total] = 0;
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27
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28 return buffer;
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29 }
1527
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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30
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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31 uint8_t *default_font(uint32_t *size_out)
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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32 {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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33 char *path = default_font_path();
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34 if (!path) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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35 goto error;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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36 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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37 FILE *f = fopen(path, "rb");
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38 if (!f) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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39 goto error;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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40 }
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41 long size = file_size(f);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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42 uint8_t *buffer = malloc(size);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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43 if (size != fread(buffer, 1, size, f)) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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44 fclose(f);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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45 goto error;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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46 }
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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47 fclose(f);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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48 sfnt_container *sfnt = load_sfnt(buffer, size);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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49 if (!sfnt) {
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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50 free(buffer);
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parents: 1474
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51 goto error;
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Michael Pavone <pavone@retrodev.com>
parents: 1474
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52 }
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53 return sfnt_flatten(sfnt->tables, size_out);
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
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parents: 1474
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54 error:
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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55 //TODO: try to find a suitable font in /usr/share/fonts as a fallback
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parents: 1474
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56 return NULL;
4f6e8acd7b6a Added support for TTC and dfont format true type fonts. More robust font selection on Windows
Michael Pavone <pavone@retrodev.com>
parents: 1474
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57 }