src/glut/dos/init.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  4.0
   4  * Copyright (C) 1995-1998  Brian Paul
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this library; if not, write to the Free
  18  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 /*
  22  * DOS/DJGPP glut driver v1.3 for Mesa 5.0
  23  *
  24  *  Copyright (C) 2002 - Borca Daniel
  25  *  Email : dborca@yahoo.com
  26  *  Web   : http://www.geocities.com/dborca
  27  */
  28
  29
  30 #include "GL/glut.h"
  31 #include "internal.h"
  32
  33
  34 void APIENTRY glutInit (int *argcp, char **argv)
  35 {
  36  const char *env;
  37
  38  if ((env = getenv("DMESA_GLUT_BPP")) != NULL) {
  39     g_bpp = atoi(env);
  40  }
  41  if ((env = getenv("DMESA_GLUT_REFRESH")) != NULL) {
  42     g_refresh = atoi(env);
  43  }
  44
  45  glutGet(GLUT_ELAPSED_TIME);
  46 }
  47
  48
  49 void APIENTRY glutInitDisplayMode (unsigned int mode)
  50 {
  51  g_display_mode = mode;
  52
  53  pc_install_keyb();
  54  g_mouse = pc_install_mouse();
  55 }
  56
  57
  58 void APIENTRY glutInitWindowPosition (int x, int y)
  59 {
  60  g_xpos = x;
  61  g_ypos = y;
  62 }
  63
  64
  65 void APIENTRY glutInitWindowSize (int width, int height)
  66 {
  67  g_width  = width;
  68  g_height = height;
  69 }
  70
  71
  72 void APIENTRY glutMainLoop (void)
  73 {
  74  GLboolean idle;
  75  static int old_mouse_x = 0;
  76  static int old_mouse_y = 0;
  77  static int old_mouse_b = 0;
  78
  79  glutPostRedisplay();
  80  if (reshape_func) reshape_func(g_width, g_height);
  81  if (visibility_func) visibility_func(GLUT_VISIBLE);
  82  if (g_mouse) pc_show_mouse();
  83
  84  while (GL_TRUE) {
  85        idle = GL_TRUE;
  86
  87        if (g_redisplay && display_func) {
  88           idle        = GL_FALSE;
  89           g_redisplay = GL_FALSE;
  90
  91           if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) pc_scare_mouse();
  92           display_func();
  93           if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) pc_unscare_mouse();
  94        }
  95
  96        if (pc_keypressed()) {
  97           int key;
  98
  99           idle = GL_FALSE;
 100           key  = pc_readkey();
 101
 102           switch (key>>16) {
 103                  case KEY_F1:     if (special_func) special_func(GLUT_KEY_F1,        0, 0); break;
 104                  case KEY_F2:     if (special_func) special_func(GLUT_KEY_F2,        0, 0); break;
 105                  case KEY_F3:     if (special_func) special_func(GLUT_KEY_F3,        0, 0); break;
 106                  case KEY_F4:     if (special_func) special_func(GLUT_KEY_F4,        0, 0); break;
 107                  case KEY_F5:     if (special_func) special_func(GLUT_KEY_F5,        0, 0); break;
 108                  case KEY_F6:     if (special_func) special_func(GLUT_KEY_F6,        0, 0); break;
 109                  case KEY_F7:     if (special_func) special_func(GLUT_KEY_F7,        0, 0); break;
 110                  case KEY_F8:     if (special_func) special_func(GLUT_KEY_F8,        0, 0); break;
 111                  case KEY_F9:     if (special_func) special_func(GLUT_KEY_F9,        0, 0); break;
 112                  case KEY_F10:    if (special_func) special_func(GLUT_KEY_F10,       0, 0); break;
 113                  case KEY_F11:    if (special_func) special_func(GLUT_KEY_F11,       0, 0); break;
 114                  case KEY_F12:    if (special_func) special_func(GLUT_KEY_F12,       0, 0); break;
 115                  case KEY_LEFT:   if (special_func) special_func(GLUT_KEY_LEFT,      0, 0); break;
 116                  case KEY_UP:     if (special_func) special_func(GLUT_KEY_UP,        0, 0); break;
 117                  case KEY_RIGHT:  if (special_func) special_func(GLUT_KEY_RIGHT,     0, 0); break;
 118                  case KEY_DOWN:   if (special_func) special_func(GLUT_KEY_DOWN,      0, 0); break;
 119                  case KEY_PGUP:   if (special_func) special_func(GLUT_KEY_PAGE_UP,   0, 0); break;
 120                  case KEY_PGDN:   if (special_func) special_func(GLUT_KEY_PAGE_DOWN, 0, 0); break;
 121                  case KEY_HOME:   if (special_func) special_func(GLUT_KEY_HOME,      0, 0); break;
 122                  case KEY_END:    if (special_func) special_func(GLUT_KEY_END,       0, 0); break;
 123                  case KEY_INSERT: if (special_func) special_func(GLUT_KEY_INSERT,    0, 0); break;
 124                  default:         if (keyboard_func) keyboard_func(key & 0xFF, 0, 0);
 125           }
 126        }
 127
 128        if (g_mouse) {
 129           int mouse_x;
 130           int mouse_y;
 131           int mouse_b;
 132
 133           mouse_b = pc_query_mouse(&mouse_x, &mouse_y);
 134
 135           if (motion_func && ((mouse_x != old_mouse_x) || (mouse_y != old_mouse_y))) {
 136              idle        = GL_FALSE;
 137              old_mouse_x = mouse_x;
 138              old_mouse_y = mouse_y;
 139
 140              motion_func(old_mouse_x, old_mouse_y);
 141           }
 142
 143           if (mouse_func && (mouse_b != old_mouse_b)) {
 144              int new_mouse_b = mouse_b;
 145
 146              if ((old_mouse_b & 1) && !(new_mouse_b & 1))
 147                 mouse_func(GLUT_LEFT_BUTTON, GLUT_UP,   mouse_x, mouse_y);
 148              else if (!(old_mouse_b & 1) && (new_mouse_b & 1))
 149                 mouse_func(GLUT_LEFT_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
 150
 151              if ((old_mouse_b & 2) && !(new_mouse_b & 2))
 152                 mouse_func(GLUT_RIGHT_BUTTON, GLUT_UP,   mouse_x, mouse_y);
 153              else if (!(old_mouse_b & 2) && (new_mouse_b & 2))
 154                 mouse_func(GLUT_RIGHT_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
 155
 156              if ((old_mouse_b & 4) && !(new_mouse_b & 4))
 157                 mouse_func(GLUT_MIDDLE_BUTTON, GLUT_UP,   mouse_x, mouse_y);
 158              else if (!(old_mouse_b & 3) && (new_mouse_b & 4))
 159                 mouse_func(GLUT_MIDDLE_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
 160
 161              idle        = GL_FALSE;
 162              old_mouse_b = new_mouse_b;
 163           }
 164        }
 165
 166        if (idle && idle_func)
 167           idle_func();
 168  }
 169 }