src/glut/dos/bitmap.c

   1 /*
   2  * DOS/DJGPP Mesa Utility Toolkit
   3  * Version:  1.0
   4  *
   5  * Copyright (C) 2005  Daniel Borca   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * DANIEL BORCA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include "internal.h"
  27
  28
  29 void APIENTRY
  30 glutBitmapCharacter (void *font, int c)
  31 {
  32    const GLUTBitmapFont *bfp = _glut_font(font);
  33    const GLUTBitmapChar *bcp;
  34
  35    if (c >= bfp->num || !(bcp = bfp->table[c]))
  36       return;
  37
  38    glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
  39
  40    glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
  41    glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
  42    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
  43    glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
  44    glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
  45    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  46    glBitmap(bcp->width, bcp->height, bcp->xorig, bcp->yorig,
  47             bcp->xmove, 0, bcp->bitmap);
  48
  49    glPopClientAttrib();
  50 }
  51
  52
  53 void APIENTRY
  54 glutBitmapString (void *font, const unsigned char *string)
  55 {
  56    const GLUTBitmapFont *bfp = _glut_font(font);
  57    const GLUTBitmapChar *bcp;
  58    unsigned char c;
  59
  60    glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
  61
  62    glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
  63    glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
  64    glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
  65    glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
  66    glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
  67    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
  68
  69    while ((c = *(string++))) {
  70       if (c < bfp->num && (bcp = bfp->table[c]))
  71          glBitmap(bcp->width, bcp->height, bcp->xorig,
  72                   bcp->yorig, bcp->xmove, 0, bcp->bitmap);
  73    }
  74
  75    glPopClientAttrib();
  76 }
  77
  78
  79 int APIENTRY
  80 glutBitmapWidth (void *font, int c)
  81 {
  82    const GLUTBitmapFont *bfp = _glut_font(font);
  83    const GLUTBitmapChar *bcp;
  84
  85    if (c >= bfp->num || !(bcp = bfp->table[c]))
  86       return 0;
  87
  88    return bcp->xmove;
  89 }
  90
  91
  92 int APIENTRY
  93 glutBitmapLength (void *font, const unsigned char *string)
  94 {
  95    const GLUTBitmapFont *bfp = _glut_font(font);
  96    const GLUTBitmapChar *bcp;
  97    unsigned char c;
  98    int length = 0;
  99
 100    while ((c = *(string++))) {
 101       if (c < bfp->num && (bcp = bfp->table[c]))
 102          length += bcp->xmove;
 103    }
 104
 105    return length;
 106 }
 107
 108
 109 int APIENTRY
 110 glutBitmapHeight (void *font)
 111 {
 112    const GLUTBitmapFont *bfp = _glut_font(font);
 113
 114    return bfp->height;
 115 }