Sean D'Epagnier
7196cddb3a
Fully implemented glutGameMode, and added vidresize stubs to make Added support for glutReshapeDisplay to change video mode but not lose current mesa context. implementation glut 5 complient. Fixed many minor bugs Updated docs
722 lines
16 KiB
C
722 lines
16 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5
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* Copyright (C) 1995-2006 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Library for glut using mesa fbdev driver
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*
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* Written by Sean D'Epagnier (c) 2006
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*/
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <termios.h>
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#include <inttypes.h>
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#include <sys/ioctl.h>
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#include <sys/poll.h>
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#include <sys/kd.h>
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#include <linux/keyboard.h>
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#include <linux/fb.h>
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#include <linux/vt.h>
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#include <GL/glut.h>
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#include "internal.h"
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#define MOUSEDEV "/dev/gpmdata"
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#ifdef HAVE_GPM
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#include <gpm.h>
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int GpmMouse;
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#endif
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int CurrentVT;
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int ConsoleFD = -1;
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int KeyboardModifiers;
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int MouseX, MouseY;
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int NumMouseButtons;
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double MouseSpeed = 0;
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int KeyRepeatMode = GLUT_KEY_REPEAT_DEFAULT;
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/* only display the mouse if there is a registered callback for it */
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int MouseEnabled = 0;
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static int OldKDMode = -1;
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static int OldMode;
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static struct vt_mode OldVTMode;
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static struct termios OldTermios;
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static int KeyboardLedState;
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static int MouseFD;
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static int kbdpipe[2];
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#define MODIFIER(mod) \
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KeyboardModifiers = release ? KeyboardModifiers & ~mod \
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: KeyboardModifiers | mod;
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/* signal handler attached to SIGIO on keyboard input, vt
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switching and modifiers is handled in the signal handler
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other keypresses read from a pipe that leaves the handler
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if a program locks up the glut loop, you can still switch
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vts and kill it without Alt-SysRq hack */
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static void KeyboardHandler(int sig)
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{
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int release, labelval;
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unsigned char code;
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struct kbentry entry;
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if(read(ConsoleFD, &code, 1) != 1)
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return;
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release = code & 0x80;
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entry.kb_index = code & 0x7F;
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entry.kb_table = 0;
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if (ioctl(ConsoleFD, KDGKBENT, &entry) < 0) {
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sprintf(exiterror, "ioctl(KDGKBENT) failed.\n");
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exit(0);
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}
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labelval = entry.kb_value;
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switch(labelval) {
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case K_SHIFT:
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case K_SHIFTL:
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MODIFIER(GLUT_ACTIVE_SHIFT);
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return;
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case K_CTRL:
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MODIFIER(GLUT_ACTIVE_CTRL);
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return;
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case K_ALT:
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case K_ALTGR:
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MODIFIER(GLUT_ACTIVE_ALT);
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return;
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}
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if(!release && labelval >= K_F1 && labelval <= K_F12)
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if(KeyboardModifiers & GLUT_ACTIVE_ALT) {
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/* VT switch, we must do it */
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if(Swapping)
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VTSwitch = labelval - K_F1 + 1;
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else
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if(ioctl(ConsoleFD, VT_ACTIVATE, labelval - K_F1 + 1) < 0)
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sprintf(exiterror, "Error switching console\n");
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return;
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}
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write(kbdpipe[1], &code, 1);
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}
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static void LedModifier(int led, int release)
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{
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static int releaseflag = K_CAPS | K_NUM | K_HOLD;
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if(release)
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releaseflag |= led;
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else
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if(releaseflag & led) {
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KeyboardLedState ^= led;
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releaseflag &= ~led;
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}
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ioctl(ConsoleFD, KDSKBLED, KeyboardLedState);
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ioctl(ConsoleFD, KDSETLED, 0x80);
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}
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#define READKEY read(kbdpipe[0], &code, 1)
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static int ReadKey(void)
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{
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int release, labelval;
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unsigned char code;
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int specialkey = 0;
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struct kbentry entry;
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if(READKEY != 1)
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return 0;
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if(code == 0)
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return 0;
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/* stdin input escape code based */
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if(ConsoleFD == 0) {
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KeyboardModifiers = 0;
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altset:
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if(code == 27 && READKEY == 1) {
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switch(code) {
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case 79: /* function key */
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READKEY;
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if(code == 50) {
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READKEY;
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shiftfunc:
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KeyboardModifiers |= GLUT_ACTIVE_SHIFT;
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specialkey = GLUT_KEY_F1 + code - 53;
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READKEY;
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} else {
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READKEY;
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specialkey = GLUT_KEY_F1 + code - 80;
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}
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break;
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case 91:
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READKEY;
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switch(code) {
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case 68:
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specialkey = GLUT_KEY_LEFT; break;
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case 65:
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specialkey = GLUT_KEY_UP; break;
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case 67:
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specialkey = GLUT_KEY_RIGHT; break;
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case 66:
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specialkey = GLUT_KEY_DOWN; break;
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case 53:
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specialkey = GLUT_KEY_PAGE_UP; READKEY; break;
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case 54:
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specialkey = GLUT_KEY_PAGE_DOWN; READKEY; break;
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case 49:
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specialkey = GLUT_KEY_HOME; READKEY; break;
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case 52:
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specialkey = GLUT_KEY_END; READKEY; break;
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case 50:
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READKEY;
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if(code != 126)
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goto shiftfunc;
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specialkey = GLUT_KEY_INSERT;
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break;
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case 51:
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code = '\b'; goto stdkey;
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case 91:
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READKEY;
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specialkey = GLUT_KEY_F1 + code - 65;
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break;
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default:
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return 0;
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}
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break;
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default:
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KeyboardModifiers |= GLUT_ACTIVE_ALT;
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goto altset;
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}
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}
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stdkey:
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if(specialkey) {
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if(SpecialFunc)
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SpecialFunc(specialkey, MouseX, MouseY);
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} else {
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if(code >= 1 && code <= 26) {
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KeyboardModifiers |= GLUT_ACTIVE_CTRL;
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code += 'a' - 1;
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}
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if((code >= 43 && code <= 34) || (code == 60)
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|| (code >= 62 && code <= 90) || (code == 94)
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|| (code == 95) || (code >= 123 && code <= 126))
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KeyboardModifiers |= GLUT_ACTIVE_SHIFT;
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if(KeyboardFunc)
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KeyboardFunc(code, MouseX, MouseY);
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}
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return 1;
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}
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/* linux kbd reading */
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release = code & 0x80;
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code &= 0x7F;
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if(KeyRepeatMode == GLUT_KEY_REPEAT_OFF) {
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static char keystates[128];
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if(release)
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keystates[code] = 0;
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else {
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if(keystates[code])
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return 1;
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keystates[code] = 1;
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}
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}
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entry.kb_index = code;
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entry.kb_table = 0;
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if(KeyboardModifiers & GLUT_ACTIVE_SHIFT)
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entry.kb_table |= K_SHIFTTAB;
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if (ioctl(ConsoleFD, KDGKBENT, &entry) < 0) {
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sprintf(exiterror, "ioctl(KDGKBENT) failed.\n");
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exit(0);
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}
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labelval = entry.kb_value;
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switch(labelval) {
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case K_CAPS:
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LedModifier(LED_CAP, release);
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return 0;
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case K_NUM:
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LedModifier(LED_NUM, release);
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return 0;
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case K_HOLD: /* scroll lock suspends glut */
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LedModifier(LED_SCR, release);
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while(KeyboardLedState & LED_SCR) {
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usleep(10000);
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ReadKey();
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}
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return 0;
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}
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/* we could queue keypresses here */
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if(KeyboardLedState & LED_SCR)
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return 0;
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if(labelval >= K_F1 && labelval <= K_F12)
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specialkey = GLUT_KEY_F1 + labelval - K_F1;
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else
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switch(labelval) {
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case K_LEFT:
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specialkey = GLUT_KEY_LEFT; break;
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case K_UP:
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specialkey = GLUT_KEY_UP; break;
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case K_RIGHT:
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specialkey = GLUT_KEY_RIGHT; break;
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case K_DOWN:
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specialkey = GLUT_KEY_DOWN; break;
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case K_PGUP:
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specialkey = GLUT_KEY_PAGE_UP; break;
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case K_PGDN:
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specialkey = GLUT_KEY_PAGE_DOWN; break;
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case K_FIND:
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specialkey = GLUT_KEY_HOME; break;
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case K_SELECT:
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specialkey = GLUT_KEY_END; break;
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case K_INSERT:
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specialkey = GLUT_KEY_INSERT; break;
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case K_REMOVE:
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labelval = '\b'; break;
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case K_ENTER:
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labelval = '\n'; break;
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}
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/* dispatch callback */
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if(specialkey) {
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if(release) {
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if(SpecialUpFunc)
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SpecialUpFunc(specialkey, MouseX, MouseY);
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} else
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if(SpecialFunc)
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SpecialFunc(specialkey, MouseX, MouseY);
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} else {
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char c = labelval;
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if(KeyboardLedState & LED_CAP) {
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if(c >= 'A' && c <= 'Z')
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c += 'a' - 'A';
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else
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if(c >= 'a' && c <= 'z')
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c += 'A' - 'a';
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}
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if(release) {
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if(KeyboardUpFunc)
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KeyboardUpFunc(c, MouseX, MouseY);
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} else
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if(KeyboardFunc)
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KeyboardFunc(c, MouseX, MouseY);
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}
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return 1;
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}
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void glutIgnoreKeyRepeat(int ignore)
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{
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KeyRepeatMode = ignore ? GLUT_KEY_REPEAT_OFF : GLUT_KEY_REPEAT_ON;
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}
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void glutSetKeyRepeat(int repeatMode)
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{
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KeyRepeatMode = repeatMode;
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}
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void glutForceJoystickFunc(void)
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{
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}
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static void HandleMousePress(int button, int pressed)
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{
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if(TryMenu(button, pressed))
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return;
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if(MouseFunc)
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MouseFunc(button, pressed ? GLUT_DOWN : GLUT_UP, MouseX, MouseY);
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}
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static int ReadMouse(void)
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{
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int l, r, m;
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static int ll, lm, lr;
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signed char dx, dy;
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#ifdef HAVE_GPM
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if(GpmMouse) {
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Gpm_Event event;
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struct pollfd pfd;
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pfd.fd = gpm_fd;
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pfd.events = POLLIN;
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if(poll(&pfd, 1, 1) != 1)
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return 0;
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if(Gpm_GetEvent(&event) != 1)
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return 0;
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l = event.buttons & GPM_B_LEFT;
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m = event.buttons & GPM_B_MIDDLE;
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r = event.buttons & GPM_B_RIGHT;
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/* gpm is weird in that it gives a button number when the button
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is released, with type set to GPM_UP, this is only a problem
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if it is the last button released */
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if(event.type & GPM_UP)
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if(event.buttons == GPM_B_LEFT || event.buttons == GPM_B_MIDDLE ||
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event.buttons == GPM_B_RIGHT || event.buttons == GPM_B_FOURTH)
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l = m = r = 0;
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dx = event.dx;
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dy = event.dy;
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} else
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#endif
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{
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char data[4];
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if(MouseFD == -1)
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return 0;
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if(fcntl(MouseFD, F_SETFL, O_NONBLOCK) == -1) {
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close(MouseFD);
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MouseFD = -1;
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return 0;
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}
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if(read(MouseFD, data, 4) != 4)
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return 0;
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l = ((data[0] & 0x20) >> 3);
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m = ((data[3] & 0x10) >> 3);
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r = ((data[0] & 0x10) >> 4);
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dx = (((data[0] & 0x03) << 6) | (data[1] & 0x3F));
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dy = (((data[0] & 0x0C) << 4) | (data[2] & 0x3F));
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}
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MouseX += dx * MouseSpeed;
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if(MouseX < 0)
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MouseX = 0;
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else
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if(MouseX >= VarInfo.xres)
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MouseX = VarInfo.xres - 1;
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MouseY += dy * MouseSpeed;
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if(MouseY < 0)
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MouseY = 0;
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else
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if(MouseY >= VarInfo.yres)
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MouseY = VarInfo.yres - 1;
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if(l != ll)
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HandleMousePress(GLUT_LEFT_BUTTON, l);
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if(m != lm)
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HandleMousePress(GLUT_MIDDLE_BUTTON, m);
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if(r != lr)
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HandleMousePress(GLUT_RIGHT_BUTTON, r);
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ll = l, lm = m, lr = r;
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if(dx || dy) {
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if(l || m || r) {
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if(MotionFunc)
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MotionFunc(MouseX, MouseY);
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} else
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if(PassiveMotionFunc)
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PassiveMotionFunc(MouseX, MouseY);
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EraseCursor();
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if(ActiveMenu)
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Redisplay = 1;
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else
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SwapCursor();
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}
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return 1;
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}
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void ReceiveInput(void)
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{
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if(ConsoleFD != -1)
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while(ReadKey());
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if(MouseEnabled)
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while(ReadMouse());
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}
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static void VTSwitchHandler(int sig)
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{
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struct vt_stat st;
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switch(sig) {
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case SIGUSR1:
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ioctl(ConsoleFD, VT_RELDISP, 1);
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Active = 0;
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#ifdef MULTIHEAD
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VisiblePoll = 1;
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TestVisible();
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#else
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VisibleSwitch = 1;
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Visible = 0;
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#endif
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break;
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case SIGUSR2:
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ioctl(ConsoleFD, VT_GETSTATE, &st);
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if(st.v_active)
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ioctl(ConsoleFD, VT_RELDISP, VT_ACKACQ);
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/* this is a hack to turn the cursor off */
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ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &VarInfo);
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RestoreColorMap();
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Active = 1;
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Visible = 1;
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VisibleSwitch = 1;
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Redisplay = 1;
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break;
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}
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}
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void InitializeVT(int usestdin)
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{
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struct termios tio;
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struct vt_mode vt;
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char console[128];
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signal(SIGIO, SIG_IGN);
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/* save old terminos settings */
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if (tcgetattr(0, &OldTermios) < 0) {
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sprintf(exiterror, "tcgetattr failed\n");
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exit(0);
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}
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tio = OldTermios;
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/* terminos settings for straight-through mode */
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tio.c_lflag &= ~(ICANON | ECHO | ISIG);
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tio.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
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tio.c_iflag |= IGNBRK;
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tio.c_cc[VMIN] = 0;
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tio.c_cc[VTIME] = 0;
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if (tcsetattr(0, TCSANOW, &tio) < 0) {
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sprintf(exiterror, "tcsetattr failed\n");
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exit(0);
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}
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if(fcntl(0, F_SETFL, O_NONBLOCK | O_ASYNC) < 0) {
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sprintf(exiterror, "Failed to set keyboard to non-blocking\n");
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exit(0);
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}
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Active = 1;
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if(usestdin) {
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ConsoleFD = 0;
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return;
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}
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/* detect the current vt if it was not specified */
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if(CurrentVT == 0) {
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int fd = open("/dev/tty", O_RDWR | O_NDELAY, 0);
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struct vt_stat st;
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if(fd == -1) {
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sprintf(exiterror, "Failed to open /dev/tty\n");
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exit(0);
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}
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if(ioctl(fd, VT_GETSTATE, &st) == -1) {
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fprintf(stderr, "Could not detect current vt, specify with -vt\n");
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fprintf(stderr, "Defaulting to stdin input\n");
|
|
ConsoleFD = 0;
|
|
close(fd);
|
|
return;
|
|
} else
|
|
CurrentVT = st.v_active;
|
|
|
|
close(fd);
|
|
}
|
|
|
|
/* open the console tty */
|
|
sprintf(console, "/dev/tty%d", CurrentVT);
|
|
ConsoleFD = open(console, O_RDWR | O_NDELAY, 0);
|
|
if (ConsoleFD < 0) {
|
|
sprintf(exiterror, "error couldn't open %s,"
|
|
" defaulting to stdin \n", console);
|
|
ConsoleFD = 0;
|
|
return;
|
|
}
|
|
|
|
signal(SIGUSR1, VTSwitchHandler);
|
|
signal(SIGUSR2, VTSwitchHandler);
|
|
|
|
if (ioctl(ConsoleFD, VT_GETMODE, &OldVTMode) < 0) {
|
|
sprintf(exiterror,"Failed to grab %s, defaulting to stdin\n", console);
|
|
close(ConsoleFD);
|
|
ConsoleFD = 0;
|
|
return;
|
|
}
|
|
|
|
vt = OldVTMode;
|
|
|
|
vt.mode = VT_PROCESS;
|
|
vt.waitv = 0;
|
|
vt.relsig = SIGUSR1;
|
|
vt.acqsig = SIGUSR2;
|
|
if (ioctl(ConsoleFD, VT_SETMODE, &vt) < 0) {
|
|
sprintf(exiterror, "error: ioctl(VT_SETMODE) failed: %s\n",
|
|
strerror(errno));
|
|
close(ConsoleFD);
|
|
ConsoleFD = 0;
|
|
exit(1);
|
|
}
|
|
|
|
if (ioctl(ConsoleFD, KDGKBMODE, &OldKDMode) < 0) {
|
|
sprintf(exiterror, "Warning: ioctl KDGKBMODE failed!\n");
|
|
OldKDMode = K_XLATE;
|
|
}
|
|
|
|
/* use SIGIO so VT switching can work if the program is locked */
|
|
signal(SIGIO, KeyboardHandler);
|
|
|
|
pipe(kbdpipe);
|
|
|
|
if(fcntl(kbdpipe[0], F_SETFL, O_NONBLOCK | O_ASYNC) < 0) {
|
|
sprintf(exiterror, "Failed to set keyboard to non-blocking\n");
|
|
exit(0);
|
|
}
|
|
|
|
fcntl(0, F_SETOWN, getpid());
|
|
|
|
if(ioctl(ConsoleFD, KDGETMODE, &OldMode) < 0)
|
|
sprintf(exiterror, "Warning: Failed to get terminal mode\n");
|
|
|
|
#ifdef HAVE_GPM
|
|
if(!GpmMouse)
|
|
#endif
|
|
if(ioctl(ConsoleFD, KDSETMODE, KD_GRAPHICS) < 0)
|
|
sprintf(exiterror,"Warning: Failed to set terminal to graphics\n");
|
|
|
|
|
|
if (ioctl(ConsoleFD, KDSKBMODE, K_MEDIUMRAW) < 0) {
|
|
sprintf(exiterror, "ioctl KDSKBMODE failed!\n");
|
|
tcsetattr(0, TCSANOW, &OldTermios);
|
|
exit(0);
|
|
}
|
|
|
|
if( ioctl(ConsoleFD, KDGKBLED, &KeyboardLedState) < 0) {
|
|
sprintf(exiterror, "ioctl KDGKBLED failed!\n");
|
|
exit(0);
|
|
}
|
|
}
|
|
|
|
void RestoreVT(void)
|
|
{
|
|
if(ConsoleFD < 0)
|
|
return;
|
|
|
|
if (tcsetattr(0, TCSANOW, &OldTermios) < 0)
|
|
fprintf(stderr, "tcsetattr failed\n");
|
|
|
|
if(ConsoleFD == 0)
|
|
return;
|
|
|
|
/* restore keyboard state */
|
|
if (ioctl(ConsoleFD, VT_SETMODE, &OldVTMode) < 0)
|
|
fprintf(stderr, "Failed to set vtmode\n");
|
|
|
|
if (ioctl(ConsoleFD, KDSKBMODE, OldKDMode) < 0)
|
|
fprintf(stderr, "ioctl KDSKBMODE failed!\n");
|
|
|
|
if(ioctl(ConsoleFD, KDSETMODE, OldMode) < 0)
|
|
fprintf(stderr, "ioctl KDSETMODE failed!\n");
|
|
|
|
close(ConsoleFD);
|
|
}
|
|
|
|
void InitializeMouse(void)
|
|
{
|
|
#ifdef HAVE_GPM
|
|
if(!GpmMouse)
|
|
#endif
|
|
{
|
|
const char *mousedev = getenv("MOUSE");
|
|
if(!mousedev)
|
|
mousedev = MOUSEDEV;
|
|
if((MouseFD = open(mousedev, O_RDONLY)) >= 0) {
|
|
if(!MouseSpeed)
|
|
MouseSpeed = 1;
|
|
NumMouseButtons = 3;
|
|
return;
|
|
}
|
|
}
|
|
#ifdef HAVE_GPM
|
|
{
|
|
Gpm_Connect conn;
|
|
int c;
|
|
conn.eventMask = ~0; /* Want to know about all the events */
|
|
conn.defaultMask = 0; /* don't handle anything by default */
|
|
conn.minMod = 0; /* want everything */
|
|
conn.maxMod = ~0; /* all modifiers included */
|
|
if(Gpm_Open(&conn, 0) != -1) {
|
|
if(!MouseSpeed)
|
|
MouseSpeed = 8;
|
|
NumMouseButtons = 3;
|
|
return;
|
|
}
|
|
fprintf(stderr, "Cannot open gpmctl.\n");
|
|
}
|
|
#endif
|
|
fprintf(stderr,"Cannot open %s.\n"
|
|
"Continuing without Mouse\n", MOUSEDEV);
|
|
}
|
|
|
|
void CloseMouse(void)
|
|
{
|
|
#ifdef HAVE_GPM
|
|
if(GpmMouse) {
|
|
if(NumMouseButtons)
|
|
Gpm_Close();
|
|
} else
|
|
#endif
|
|
if(MouseFD >= 0)
|
|
close(MouseFD);
|
|
}
|