diff options
Diffstat (limited to 'src/glut/fbdev/input.c')
| -rw-r--r-- | src/glut/fbdev/input.c | 715 |
1 files changed, 715 insertions, 0 deletions
diff --git a/src/glut/fbdev/input.c b/src/glut/fbdev/input.c new file mode 100644 index 0000000000..7daec8c914 --- /dev/null +++ b/src/glut/fbdev/input.c @@ -0,0 +1,715 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * Copyright (C) 1995-2006 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. + */ + +/* + * Library for glut using mesa fbdev driver + * + * Written by Sean D'Epagnier (c) 2006 + */ + +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <unistd.h> +#include <termios.h> +#include <inttypes.h> + +#include <sys/ioctl.h> +#include <sys/poll.h> +#include <sys/kd.h> + +#include <linux/keyboard.h> +#include <linux/fb.h> +#include <linux/vt.h> + +#include <GL/glut.h> + +#include "internal.h" + +#define MOUSEDEV "/dev/gpmdata" + +#ifdef HAVE_GPM +#include <gpm.h> +int GpmMouse; +#endif + +int CurrentVT; +int ConsoleFD = -1; + +int KeyboardModifiers; + +int MouseX, MouseY; +int NumMouseButtons; + +double MouseSpeed = 0; + +int KeyRepeatMode = GLUT_KEY_REPEAT_DEFAULT; + +/* only display the mouse if there is a registered callback for it */ +int MouseEnabled = 0; + +static int OldKDMode = -1; +static int OldMode; +static struct vt_mode OldVTMode; +static struct termios OldTermios; + +static int KeyboardLedState; + +static int MouseFD; + +static int kbdpipe[2]; + +#define MODIFIER(mod) \ + KeyboardModifiers = release ? KeyboardModifiers & ~mod \ + : KeyboardModifiers | mod; + +/* signal handler attached to SIGIO on keyboard input, vt + switching and modifiers is handled in the signal handler + other keypresses read from a pipe that leaves the handler + if a program locks up the glut loop, you can still switch + vts and kill it without Alt-SysRq hack */ +static void KeyboardHandler(int sig) +{ + int release, labelval; + unsigned char code; + struct kbentry entry; + + if(read(ConsoleFD, &code, 1) != 1) + return; + + release = code & 0x80; + + entry.kb_index = code & 0x7F; + entry.kb_table = 0; + + if (ioctl(ConsoleFD, KDGKBENT, &entry) < 0) { + sprintf(exiterror, "ioctl(KDGKBENT) failed.\n"); + exit(0); + } + + labelval = entry.kb_value; + + switch(labelval) { + case K_SHIFT: + case K_SHIFTL: + MODIFIER(GLUT_ACTIVE_SHIFT); + return; + case K_CTRL: + MODIFIER(GLUT_ACTIVE_CTRL); + return; + case K_ALT: + case K_ALTGR: + MODIFIER(GLUT_ACTIVE_ALT); + return; + } + + if(!release && labelval >= K_F1 && labelval <= K_F12) + if(KeyboardModifiers & GLUT_ACTIVE_ALT) { + /* VT switch, we must do it */ + if(ioctl(ConsoleFD, VT_ACTIVATE, labelval - K_F1 + 1) < 0) + sprintf(exiterror, "Error switching console\n"); + return; + } + write(kbdpipe[1], &code, 1); +} + +static void LedModifier(int led, int release) +{ + static int releaseflag = K_CAPS | K_NUM | K_HOLD; + if(release) + releaseflag |= led; + else + if(releaseflag & led) { + KeyboardLedState ^= led; + releaseflag &= ~led; + } + ioctl(ConsoleFD, KDSKBLED, KeyboardLedState); + ioctl(ConsoleFD, KDSETLED, 0x80); +} + +#define READKEY read(kbdpipe[0], &code, 1) +static int ReadKey(void) +{ + int release, labelval; + unsigned char code; + int specialkey = 0; + struct kbentry entry; + + if(READKEY != 1) + return 0; + if(code == 0) + return 0; + + /* stdin input escape code based */ + if(ConsoleFD == 0) { + KeyboardModifiers = 0; + altset: + if(code == 27 && READKEY == 1) { + switch(code) { + case 79: /* function key */ + READKEY; + if(code == 50) { + READKEY; + shiftfunc: + KeyboardModifiers |= GLUT_ACTIVE_SHIFT; + specialkey = GLUT_KEY_F1 + code - 53; + READKEY; + } else { + READKEY; + specialkey = GLUT_KEY_F1 + code - 80; + } + break; + case 91: + READKEY; + switch(code) { + case 68: + specialkey = GLUT_KEY_LEFT; break; + case 65: + specialkey = GLUT_KEY_UP; break; + case 67: + specialkey = GLUT_KEY_RIGHT; break; + case 66: + specialkey = GLUT_KEY_DOWN; break; + case 53: + specialkey = GLUT_KEY_PAGE_UP; READKEY; break; + case 54: + specialkey = GLUT_KEY_PAGE_DOWN; READKEY; break; + case 49: + specialkey = GLUT_KEY_HOME; READKEY; break; + case 52: + specialkey = GLUT_KEY_END; READKEY; break; + case 50: + READKEY; + if(code != 126) + goto shiftfunc; + specialkey = GLUT_KEY_INSERT; + break; + case 51: + code = '\b'; goto stdkey; + case 91: + READKEY; + specialkey = GLUT_KEY_F1 + code - 65; + break; + default: + return 0; + } + break; + default: + KeyboardModifiers |= GLUT_ACTIVE_ALT; + goto altset; + } + } + stdkey: + if(specialkey) { + if(SpecialFunc) + SpecialFunc(specialkey, MouseX, MouseY); + } else { + if(code >= 1 && code <= 26) { + KeyboardModifiers |= GLUT_ACTIVE_CTRL; + code += 'a' - 1; + } + if((code >= 43 && code <= 34) || (code == 60) + || (code >= 62 && code <= 90) || (code == 94) + || (code == 95) || (code >= 123 && code <= 126)) + KeyboardModifiers |= GLUT_ACTIVE_SHIFT; + + if(KeyboardFunc) + KeyboardFunc(code, MouseX, MouseY); + } + return 1; + } + + /* linux kbd reading */ + release = code & 0x80; + code &= 0x7F; + + if(KeyRepeatMode == GLUT_KEY_REPEAT_OFF) { + static char keystates[128]; + if(release) + keystates[code] = 0; + else { + if(keystates[code]) + return 1; + keystates[code] = 1; + } + } + + entry.kb_index = code; + entry.kb_table = 0; + + if(KeyboardModifiers & GLUT_ACTIVE_SHIFT) + entry.kb_table |= K_SHIFTTAB; + + if (ioctl(ConsoleFD, KDGKBENT, &entry) < 0) { + sprintf(exiterror, "ioctl(KDGKBENT) failed.\n"); + exit(0); + } + + labelval = entry.kb_value; + + switch(labelval) { + case K_CAPS: + LedModifier(LED_CAP, release); + return 0; + case K_NUM: + LedModifier(LED_NUM, release); + return 0; + case K_HOLD: /* scroll lock suspends glut */ + LedModifier(LED_SCR, release); + while(KeyboardLedState & LED_SCR) { + usleep(10000); + ReadKey(); + } + return 0; + } + + /* we could queue keypresses here */ + if(KeyboardLedState & LED_SCR) + return 0; + + if(labelval >= K_F1 && labelval <= K_F12) + specialkey = GLUT_KEY_F1 + labelval - K_F1; + else + switch(labelval) { + case K_LEFT: + specialkey = GLUT_KEY_LEFT; break; + case K_UP: + specialkey = GLUT_KEY_UP; break; + case K_RIGHT: + specialkey = GLUT_KEY_RIGHT; break; + case K_DOWN: + specialkey = GLUT_KEY_DOWN; break; + case K_PGUP: + specialkey = GLUT_KEY_PAGE_UP; break; + case K_PGDN: + specialkey = GLUT_KEY_PAGE_DOWN; break; + case K_FIND: + specialkey = GLUT_KEY_HOME; break; + case K_SELECT: + specialkey = GLUT_KEY_END; break; + case K_INSERT: + specialkey = GLUT_KEY_INSERT; break; + case K_REMOVE: + labelval = '\b'; break; + case K_ENTER: + labelval = '\n'; break; + } + + /* dispatch callback */ + if(specialkey) { + if(release) { + if(SpecialUpFunc) + SpecialUpFunc(specialkey, MouseX, MouseY); + } else + if(SpecialFunc) + SpecialFunc(specialkey, MouseX, MouseY); + } else { + char c = labelval; + + if(KeyboardLedState & LED_CAP) { + if(c >= 'A' && c <= 'Z') + c += 'a' - 'A'; + else + if(c >= 'a' && c <= 'z') + c += 'A' - 'a'; + } + if(release) { + if(KeyboardUpFunc) + KeyboardUpFunc(c, MouseX, MouseY); + } else + if(KeyboardFunc) + KeyboardFunc(c, MouseX, MouseY); + } + return 1; +} + +void glutIgnoreKeyRepeat(int ignore) +{ + KeyRepeatMode = ignore ? GLUT_KEY_REPEAT_OFF : GLUT_KEY_REPEAT_ON; +} + +void glutSetKeyRepeat(int repeatMode) +{ + KeyRepeatMode = repeatMode; +} + +void glutForceJoystickFunc(void) +{ +} + +static void HandleMousePress(int button, int pressed) +{ + if(TryMenu(button, pressed)) + return; + + if(MouseFunc) + MouseFunc(button, pressed ? GLUT_DOWN : GLUT_UP, MouseX, MouseY); +} + +static int ReadMouse(void) +{ + int l, r, m; + static int ll, lm, lr; + signed char dx, dy; + +#ifdef HAVE_GPM + if(GpmMouse) { + Gpm_Event event; + struct pollfd pfd; + pfd.fd = gpm_fd; + pfd.events = POLLIN; + if(poll(&pfd, 1, 1) != 1) + return 0; + + if(Gpm_GetEvent(&event) != 1) + return 0; + + l = event.buttons & GPM_B_LEFT; + m = event.buttons & GPM_B_MIDDLE; + r = event.buttons & GPM_B_RIGHT; + + /* gpm is weird in that it gives a button number when the button + is released, with type set to GPM_UP, this is only a problem + if it is the last button released */ + + if(event.type & GPM_UP) + if(event.buttons == GPM_B_LEFT || event.buttons == GPM_B_MIDDLE || + event.buttons == GPM_B_RIGHT || event.buttons == GPM_B_FOURTH) + l = m = r = 0; + + dx = event.dx; + dy = event.dy; + } else +#endif + { + char data[4]; + + if(MouseFD == -1) + return 0; + + if(fcntl(MouseFD, F_SETFL, O_NONBLOCK) == -1) { + close(MouseFD); + MouseFD = -1; + return 0; + } + + if(read(MouseFD, data, 4) != 4) + return 0; + + l = ((data[0] & 0x20) >> 3); + m = ((data[3] & 0x10) >> 3); + r = ((data[0] & 0x10) >> 4); + + dx = (((data[0] & 0x03) << 6) | (data[1] & 0x3F)); + dy = (((data[0] & 0x0C) << 4) | (data[2] & 0x3F)); + } + + MouseX += dx * MouseSpeed; + if(MouseX < 0) + MouseX = 0; + else + if(MouseX >= VarInfo.xres) + MouseX = VarInfo.xres - 1; + + MouseY += dy * MouseSpeed; + if(MouseY < 0) + MouseY = 0; + else + if(MouseY >= VarInfo.yres) + MouseY = VarInfo.yres - 1; + + if(l != ll) + HandleMousePress(GLUT_LEFT_BUTTON, l); + if(m != lm) + HandleMousePress(GLUT_MIDDLE_BUTTON, m); + if(r != lr) + HandleMousePress(GLUT_RIGHT_BUTTON, r); + + ll = l, lm = m, lr = r; + + if(dx || dy) { + if(l || m || r) { + if(MotionFunc) + MotionFunc(MouseX, MouseY); + } else + if(PassiveMotionFunc) + PassiveMotionFunc(MouseX, MouseY); + + EraseCursor(); + if(ActiveMenu) + Redisplay = 1; + else + SwapCursor(); + } + + return 1; +} + +void ReceiveInput(void) +{ + if(ConsoleFD != -1) + while(ReadKey()); + + if(MouseEnabled) + while(ReadMouse()); +} + +static void VTSwitchHandler(int sig) +{ + struct vt_stat st; + switch(sig) { + case SIGUSR1: + ioctl(ConsoleFD, VT_RELDISP, 1); + Active = 0; +#ifdef MULTIHEAD + VisiblePoll = 1; + TestVisible(); +#else + VisibleSwitch = 1; + Visible = 0; +#endif + break; + case SIGUSR2: + ioctl(ConsoleFD, VT_GETSTATE, &st); + if(st.v_active) + ioctl(ConsoleFD, VT_RELDISP, VT_ACKACQ); + + /* this is a hack to turn the cursor off */ + ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &VarInfo); + + RestoreColorMap(); + + Active = 1; + Visible = 1; + VisibleSwitch = 1; + + Redisplay = 1; + + break; + } +} + +void InitializeVT(int usestdin) +{ + struct termios tio; + struct vt_mode vt; + char console[128]; + + /* terminos settings for straight-through mode */ + if (tcgetattr(0, &OldTermios) < 0) { + sprintf(exiterror, "tcgetattr failed\n"); + exit(0); + } + + tio = OldTermios; + + tio.c_lflag &= ~(ICANON | ECHO | ISIG); + tio.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON); + tio.c_iflag |= IGNBRK; + + tio.c_cc[VMIN] = 0; + tio.c_cc[VTIME] = 0; + + if (tcsetattr(0, TCSANOW, &tio) < 0) { + sprintf(exiterror, "tcsetattr failed\n"); + exit(0); + } + + if(fcntl(0, F_SETFL, O_NONBLOCK | O_ASYNC) < 0) { + sprintf(exiterror, "Failed to set keyboard to non-blocking\n"); + exit(0); + } + + Active = 1; + + if(usestdin) { + ConsoleFD = 0; + return; + } + + /* detect the current vt if it was not specified */ + if(CurrentVT == 0) { + int fd = open("/dev/tty", O_RDWR | O_NDELAY, 0); + struct vt_stat st; + if(fd == -1) { + sprintf(exiterror, "Failed to open /dev/tty\n"); + exit(0); + } + if(ioctl(fd, VT_GETSTATE, &st) == -1) { + fprintf(stderr, "Could not detect current vt, specify with -vt\n"); + 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 */ + if(ConsoleFD) + 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) + if (tcsetattr(0, TCSANOW, &OldTermios) < 0) + fprintf(stderr, "tcsetattr failed\n"); + + if(ConsoleFD > 0) { + /* 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 we were in text mode, switching to graphics and back restores + the colormap */ + if(ioctl(ConsoleFD, KDSETMODE, KD_GRAPHICS) < 0) + fprintf(stderr, "ioctl KDSETMODE failed!\n"); + + if(ioctl(ConsoleFD, KDSETMODE, OldMode) < 0) + fprintf(stderr, "ioctl KDSETMODE failed!\n"); + + close(ConsoleFD); + } +} + +void InitializeMouse(void) +{ +#ifdef HAVE_GPM + if(GpmMouse) { + 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) { + fprintf(stderr, "Cannot open gpmctl. Continuing without Mouse\n"); + return; + } + + if(!MouseSpeed) + MouseSpeed = 5; + } else +#endif + { + const char *mousedev = getenv("MOUSE"); + if(!mousedev) + mousedev = MOUSEDEV; + if((MouseFD = open(mousedev, O_RDONLY)) < 0) { + fprintf(stderr,"Cannot open %s.\n" + "Continuing without Mouse\n", MOUSEDEV); + return; + } + + if(!MouseSpeed) + MouseSpeed = 1; + } + + NumMouseButtons = 3; +} + +void CloseMouse(void) +{ +#ifdef HAVE_GPM + if(GpmMouse) { + if(NumMouseButtons) + Gpm_Close(); + } else +#endif + if(MouseFD >= 0) + close(MouseFD); +} |