libs/text/GP_Font.c

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim is free software; you can redistribute it and/or                  *
   5  * modify it under the terms of the GNU Lesser General Public                *
   6  * License as published by the Free Software Foundation; either              *
   7  * version 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim is distributed in the hope that it will be useful,                *
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  12  * Lesser General Public License for more details.                           *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Lesser General Public          *
  15  * License along with gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2009-2014 Cyril Hrubis <metan@ucw.cz>                       *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 #include <stdlib.h>
  24 #include "GP_Font.h"
  25
  26 #include "GP_DefaultFont.h"
  27
  28 uint32_t GP_GetGlyphCount(GP_CharSet charset)
  29 {
  30         switch (charset) {
  31         case GP_CHARSET_7BIT:
  32                 return 0x7f - 0x20 + 1;
  33         break;
  34         default:
  35                 return 0;
  36         }
  37 }
  38
  39 GP_GlyphBitmap *GP_GetGlyphBitmap(const GP_FontFace *font, int c)
  40 {
  41         int i;
  42
  43         switch (font->charset) {
  44         case GP_CHARSET_7BIT:
  45                 if (c < 0x20 || c > 0x7f)
  46                         return NULL;
  47                 i = c - ' ';
  48         break;
  49         default:
  50                 return NULL;
  51         }
  52
  53         uint32_t offset;
  54
  55         if (font->glyph_offsets[0] == 0)
  56                 offset = font->glyph_offsets[i];
  57         else
  58                 offset = font->glyph_offsets[0] * i;
  59
  60         return (GP_GlyphBitmap*)(font->glyphs + offset);
  61 }
  62
  63 void GP_FontFaceFree(GP_FontFace *self)
  64 {
  65         if (!self)
  66                 return;
  67
  68         free(self->glyphs);
  69         free(self);
  70 }