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annotate nuklear_ui/font.c @ 1971:80920c21bb52

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Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
author Michael Pavone <pavone@retrodev.com>
date Fri, 08 May 2020 11:40:30 -0700
parents 253c62b7144e
children 3dd9c68472fb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <stdint.h>
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4 #include <string.h>
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5 #include "../util.h"
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6 #include "sfnt.h"
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7
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8 char *default_font_path(void)
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9 {
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10 #ifdef FONT_PATH
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11 FILE *f = fopen(FONT_PATH, "rb");
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12 if (f) {
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13 fclose(f);
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14 return strdup(FONT_PATH);
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15 }
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16 #endif
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17 FILE *fc_pipe = popen("fc-match -f '%{file}'", "r");
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18 if (!fc_pipe) {
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19 return NULL;
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20 }
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21 size_t buf_size = 128;
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22 char *buffer = NULL;
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23 size_t total = 0, read = 0;
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24 do {
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25 total += read;
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26 buf_size *= 2;
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27 buffer = realloc(buffer, buf_size);
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28 if (!buffer) {
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29 return NULL;
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30 }
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31 read = fread(buffer, 1, buf_size - total, fc_pipe);
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32 } while (read == (buf_size - total));
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33 total += read;
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34 buffer[total] = 0;
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35
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36 return buffer;
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37 }
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38
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39 uint8_t *default_font(uint32_t *size_out)
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40 {
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41 char *path = default_font_path();
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42 if (!path) {
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43 goto error;
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44 }
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45 FILE *f = fopen(path, "rb");
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24508cb54f87 Fix a number of other memory errors (mostly leaks again) identified by valgrind
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46 free(path);
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47 if (!f) {
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48 goto error;
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49 }
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50 long size = file_size(f);
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51 uint8_t *buffer = malloc(size);
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52 if (size != fread(buffer, 1, size, f)) {
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53 fclose(f);
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54 goto error;
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55 }
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56 fclose(f);
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57 sfnt_container *sfnt = load_sfnt(buffer, size);
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58 if (!sfnt) {
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59 free(buffer);
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60 goto error;
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61 }
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62 return sfnt_flatten(sfnt->tables, size_out);
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63 error:
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64 //TODO: try to find a suitable font in /usr/share/fonts as a fallback
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65 return NULL;
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66 }