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/*
* Mesa 3-D graphics library
* Version: 3.0
* Copyright (C) 1995-1998 Brian Paul
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <allegro.h>
#include "GL/glut.h"
#include "internal.h"
void APIENTRY glutInit(int *argcp, char **argv)
{
}
void APIENTRY glutInitDisplayMode(unsigned int mode)
{
g_display_mode = mode;
allegro_init();
install_keyboard();
install_timer();
g_mouse = (install_mouse() != -1);
}
void APIENTRY glutInitWindowPosition(int x, int y)
{
}
void APIENTRY glutInitWindowSize(int width, int height)
{
if (((width == 320) && (height = 200)) ||
((width == 640) && (height = 480)) ||
((width == 800) && (height = 600)) ||
((width == 1024) && (height = 768)) ||
((width == 1280) && (height = 1024)))
{
g_width = width;
g_height = height;
}
else
{
g_width = DEFAULT_WIDTH;
g_height = DEFAULT_HEIGHT;
}
}
void APIENTRY glutMainLoop(void)
{
GLboolean idle;
static int old_mouse_x = 0;
static int old_mouse_y = 0;
static int old_mouse_b = 0;
glutPostRedisplay();
if (reshape_func) reshape_func(g_width, g_height);
if (g_mouse) show_mouse(screen);
while (GL_TRUE)
{
idle = GL_TRUE;
if (g_redisplay && display_func)
{
idle = GL_FALSE;
g_redisplay = GL_FALSE;
if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) scare_mouse();
display_func();
if (g_mouse && !(g_display_mode & GLUT_DOUBLE)) unscare_mouse();
}
if (keypressed())
{
int key;
idle = GL_FALSE;
key = readkey();
switch ((key >> 8) & 0xFF)
{
case KEY_F1: if (special_func) special_func(GLUT_KEY_F1, 0, 0); break;
case KEY_F2: if (special_func) special_func(GLUT_KEY_F2, 0, 0); break;
case KEY_F3: if (special_func) special_func(GLUT_KEY_F3, 0, 0); break;
case KEY_F4: if (special_func) special_func(GLUT_KEY_F4, 0, 0); break;
case KEY_F5: if (special_func) special_func(GLUT_KEY_F5, 0, 0); break;
case KEY_F6: if (special_func) special_func(GLUT_KEY_F6, 0, 0); break;
case KEY_F7: if (special_func) special_func(GLUT_KEY_F7, 0, 0); break;
case KEY_F8: if (special_func) special_func(GLUT_KEY_F8, 0, 0); break;
case KEY_F9: if (special_func) special_func(GLUT_KEY_F9, 0, 0); break;
case KEY_F10: if (special_func) special_func(GLUT_KEY_F10, 0, 0); break;
case KEY_F11: if (special_func) special_func(GLUT_KEY_F11, 0, 0); break;
case KEY_F12: if (special_func) special_func(GLUT_KEY_F12, 0, 0); break;
case KEY_LEFT: if (special_func) special_func(GLUT_KEY_LEFT, 0, 0); break;
case KEY_UP: if (special_func) special_func(GLUT_KEY_UP, 0, 0); break;
case KEY_RIGHT: if (special_func) special_func(GLUT_KEY_RIGHT, 0, 0); break;
case KEY_DOWN: if (special_func) special_func(GLUT_KEY_DOWN, 0, 0); break;
case KEY_PGUP: if (special_func) special_func(GLUT_KEY_PAGE_UP, 0, 0); break;
case KEY_PGDN: if (special_func) special_func(GLUT_KEY_PAGE_DOWN, 0, 0); break;
case KEY_HOME: if (special_func) special_func(GLUT_KEY_HOME, 0, 0); break;
case KEY_END: if (special_func) special_func(GLUT_KEY_END, 0, 0); break;
case KEY_INSERT: if (special_func) special_func(GLUT_KEY_INSERT, 0, 0); break;
default: if (keyboard_func) keyboard_func(key & 0xFF, 0, 0);
}
}
if (g_mouse && motion_func && ((mouse_x != old_mouse_x) || (mouse_y != old_mouse_y)))
{
idle = GL_FALSE;
old_mouse_x = mouse_x;
old_mouse_y = mouse_y;
motion_func(old_mouse_x, old_mouse_y);
}
if (g_mouse && mouse_func && (mouse_b != old_mouse_b))
{
int new_mouse_b = mouse_b;
if ((old_mouse_b & 1) && !(new_mouse_b & 1))
mouse_func(GLUT_LEFT_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
else if (!(old_mouse_b & 1) && (new_mouse_b & 1))
mouse_func(GLUT_LEFT_BUTTON, GLUT_UP, mouse_x, mouse_y);
if ((old_mouse_b & 2) && !(new_mouse_b & 2))
mouse_func(GLUT_RIGHT_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
else if (!(old_mouse_b & 2) && (new_mouse_b & 2))
mouse_func(GLUT_RIGHT_BUTTON, GLUT_UP, mouse_x, mouse_y);
if ((old_mouse_b & 4) && !(new_mouse_b & 4))
mouse_func(GLUT_MIDDLE_BUTTON, GLUT_DOWN, mouse_x, mouse_y);
else if (!(old_mouse_b & 3) && (new_mouse_b & 4))
mouse_func(GLUT_MIDDLE_BUTTON, GLUT_UP, mouse_x, mouse_y);
idle = GL_FALSE;
old_mouse_b = new_mouse_b;
}
if (idle && idle_func)
idle_func();
}
}
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