| 1 | /* |
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| 2 | * font.c: font handling |
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| 3 | * $Id: font.c 2318 2008-04-26 08:41:43Z sam $ |
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| 4 | * |
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| 5 | * Copyright: (c) 2005 Sam Hocevar <sam@zoy.org> |
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| 6 | * This program is free software. It comes without any warranty, to |
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| 7 | * the extent permitted by applicable law. You can redistribute it |
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| 8 | * and/or modify it under the terms of the Do What The Fuck You Want |
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| 9 | * To Public License, Version 2, as published by Sam Hocevar. See |
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| 10 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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| 11 | */ |
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| 12 | |
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| 13 | #include <stdio.h> |
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| 14 | #include <stdlib.h> |
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| 15 | #include <string.h> |
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| 16 | |
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| 17 | #include "config.h" |
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| 18 | #include "common.h" |
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| 19 | |
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| 20 | struct font *font_load_fixed(char const *decoder, char const *file, |
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| 21 | char const *chars) |
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| 22 | { |
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| 23 | char fontname[BUFSIZ]; |
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| 24 | struct font *font; |
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| 25 | struct image *img; |
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| 26 | int i; |
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| 27 | |
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| 28 | sprintf(fontname, "src/%s/%s", decoder, file); |
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| 29 | img = image_load(fontname); |
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| 30 | if(!img) |
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| 31 | { |
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| 32 | sprintf(fontname, "%s/%s/%s", share, decoder, file); |
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| 33 | img = image_load(fontname); |
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| 34 | } |
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| 35 | if(!img) |
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| 36 | { |
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| 37 | fprintf(stderr, "%s: cannot load font %s\n", argv0, fontname); |
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| 38 | return NULL; |
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| 39 | } |
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| 40 | |
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| 41 | font = malloc(sizeof(struct font)); |
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| 42 | font->img = img; |
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| 43 | font->size = strlen(chars); |
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| 44 | font->glyphs = malloc(font->size * sizeof(struct glyph)); |
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| 45 | |
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| 46 | for(i = 0; i < font->size; i++) |
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| 47 | { |
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| 48 | font->glyphs[i].xmin = i * font->img->width / font->size; |
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| 49 | font->glyphs[i].xmax = (i + 1) * font->img->width / font->size; |
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| 50 | font->glyphs[i].ymin = 0; |
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| 51 | font->glyphs[i].ymax = font->img->height; |
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| 52 | font->glyphs[i].count = 0; /* They all have the same width anyway */ |
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| 53 | font->glyphs[i].c = chars[i]; |
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| 54 | } |
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| 55 | |
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| 56 | return font; |
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| 57 | } |
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| 58 | |
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| 59 | struct font *font_load_variable(char const *decoder, char const *file, |
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| 60 | char const *chars) |
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| 61 | { |
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| 62 | char fontname[BUFSIZ]; |
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| 63 | struct font *font; |
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| 64 | struct image *img; |
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| 65 | int count = 0, incell = 0, xmin, xmax, ymin, ymax; |
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| 66 | int x, y, i; |
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| 67 | int r, g, b; |
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| 68 | |
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| 69 | sprintf(fontname, "src/%s/%s", decoder, file); |
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| 70 | img = image_load(fontname); |
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| 71 | if(!img) |
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| 72 | { |
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| 73 | sprintf(fontname, "%s/%s/%s", share, decoder, file); |
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| 74 | img = image_load(fontname); |
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| 75 | } |
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| 76 | if(!img) |
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| 77 | { |
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| 78 | fprintf(stderr, "%s: cannot load font %s\n", argv0, fontname); |
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| 79 | return NULL; |
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| 80 | } |
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| 81 | |
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| 82 | font = malloc(sizeof(struct font)); |
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| 83 | font->img = img; |
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| 84 | font->size = strlen(chars); |
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| 85 | font->glyphs = malloc(font->size * sizeof(struct glyph)); |
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| 86 | |
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| 87 | for(x = 0, i = 0, xmin = 0; x <= font->img->width && i < font->size; x++) |
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| 88 | { |
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| 89 | int found = 0; |
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| 90 | if(x != font->img->width) |
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| 91 | for(y = 0; y < font->img->height; y++) |
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| 92 | { |
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| 93 | getpixel(font->img, x, y, &r, &g, &b); |
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| 94 | if(r < 250) |
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| 95 | { |
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| 96 | found = 1; |
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| 97 | count += (255 - r); |
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| 98 | } |
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| 99 | } |
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| 100 | else |
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| 101 | found = 0; |
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| 102 | |
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| 103 | if(found && !incell) |
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| 104 | { |
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| 105 | incell = 1; |
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| 106 | xmin = x; |
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| 107 | } |
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| 108 | else if(!found && incell) |
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| 109 | { |
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| 110 | incell = 0; |
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| 111 | xmax = x; |
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| 112 | #if 0 |
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| 113 | ymin = font->img->height; |
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| 114 | ymax = 0; |
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| 115 | for(y = 0; y < font->img->height; y++) |
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| 116 | { |
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| 117 | int newx; |
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| 118 | int gotit = 0; |
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| 119 | for(newx = xmin; newx < xmax; newx++) |
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| 120 | { |
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| 121 | getpixel(font->img, newx, y, &r, &g, &b); |
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| 122 | if(r < 250) |
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| 123 | { |
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| 124 | gotit = 1; |
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| 125 | break; |
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| 126 | } |
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| 127 | } |
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| 128 | if(gotit) |
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| 129 | { |
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| 130 | if(ymin > y) ymin = y; |
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| 131 | if(ymax <= y) ymax = y + 1; |
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| 132 | } |
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| 133 | } |
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| 134 | #else |
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| 135 | ymin = 0; |
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| 136 | ymax = font->img->height; |
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| 137 | #endif |
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| 138 | font->glyphs[i].xmin = xmin; |
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| 139 | font->glyphs[i].xmax = xmax; |
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| 140 | font->glyphs[i].ymin = ymin; |
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| 141 | font->glyphs[i].ymax = ymax; |
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| 142 | font->glyphs[i].count = count; |
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| 143 | font->glyphs[i].c = chars[i]; |
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| 144 | count = 0; |
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| 145 | i++; |
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| 146 | } |
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| 147 | } |
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| 148 | |
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| 149 | if(i != font->size) |
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| 150 | { |
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| 151 | fprintf(stderr, "%s: could only find %i of %i glyphs in font %s\n", |
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| 152 | argv0, i, font->size, file); |
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| 153 | image_free(font->img); |
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| 154 | free(font->glyphs); |
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| 155 | free(font); |
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| 156 | return NULL; |
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| 157 | } |
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| 158 | |
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| 159 | return font; |
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| 160 | } |
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| 161 | |
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| 162 | void font_free(struct font *font) |
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| 163 | { |
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| 164 | image_free(font->img); |
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| 165 | free(font->glyphs); |
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| 166 | free(font); |
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| 167 | } |
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| 168 | |
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