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SDL_fbevents.c
1391 lines (1280 loc) · 39.8 KB
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/*
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SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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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
Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Handle the event stream, converting console events into SDL events */
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#include <stdio.h>
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#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
/* For parsing /proc */
#include <dirent.h>
#include <ctype.h>
#include <linux/vt.h>
#include <linux/kd.h>
#include <linux/keyboard.h>
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#include "SDL_timer.h"
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#include "SDL_mutex.h"
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#include "../SDL_sysvideo.h"
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_fbvideo.h"
#include "SDL_fbevents_c.h"
#include "SDL_fbkeys.h"
#include "SDL_fbelo.h"
#ifndef GPM_NODE_FIFO
#define GPM_NODE_FIFO "/dev/gpmdata"
#endif
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/*#define DEBUG_KEYBOARD*/
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/*#define DEBUG_MOUSE*/
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/* The translation tables from a console scancode to a SDL keysym */
#define NUM_VGAKEYMAPS (1<<KG_CAPSSHIFT)
static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
static SDLKey keymap[128];
static Uint16 keymap_temp[128]; /* only used at startup */
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static SDL_keysym *TranslateKey(int scancode, SDL_keysym * keysym);
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/* Ugh, we have to duplicate the kernel's keysym mapping code...
Oh, it's not so bad. :-)
FIXME: Add keyboard LED handling code
*/
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static void
FB_vgainitkeymaps(int fd)
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{
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struct kbentry entry;
int map, i;
/* Don't do anything if we are passed a closed keyboard */
if (fd < 0) {
return;
}
/* Load all the keysym mappings */
for (map = 0; map < NUM_VGAKEYMAPS; ++map) {
SDL_memset(vga_keymap[map], 0, NR_KEYS * sizeof(Uint16));
for (i = 0; i < NR_KEYS; ++i) {
entry.kb_table = map;
entry.kb_index = i;
if (ioctl(fd, KDGKBENT, &entry) == 0) {
/* fill keytemp. This replaces SDL_fbkeys.h */
if ((map == 0) && (i < 128)) {
keymap_temp[i] = entry.kb_value;
}
/* The "Enter" key is a special case */
if (entry.kb_value == K_ENTER) {
entry.kb_value = K(KT_ASCII, 13);
}
/* Handle numpad specially as well */
if (KTYP(entry.kb_value) == KT_PAD) {
switch (entry.kb_value) {
case K_P0:
case K_P1:
case K_P2:
case K_P3:
case K_P4:
case K_P5:
case K_P6:
case K_P7:
case K_P8:
case K_P9:
vga_keymap[map][i] = entry.kb_value;
vga_keymap[map][i] += '0';
break;
case K_PPLUS:
vga_keymap[map][i] = K(KT_ASCII, '+');
break;
case K_PMINUS:
vga_keymap[map][i] = K(KT_ASCII, '-');
break;
case K_PSTAR:
vga_keymap[map][i] = K(KT_ASCII, '*');
break;
case K_PSLASH:
vga_keymap[map][i] = K(KT_ASCII, '/');
break;
case K_PENTER:
vga_keymap[map][i] = K(KT_ASCII, '\r');
break;
case K_PCOMMA:
vga_keymap[map][i] = K(KT_ASCII, ',');
break;
case K_PDOT:
vga_keymap[map][i] = K(KT_ASCII, '.');
break;
default:
break;
}
}
/* Do the normal key translation */
if ((KTYP(entry.kb_value) == KT_LATIN) ||
(KTYP(entry.kb_value) == KT_ASCII) ||
(KTYP(entry.kb_value) == KT_LETTER)) {
vga_keymap[map][i] = entry.kb_value;
}
}
}
}
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}
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int
FB_InGraphicsMode(_THIS)
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{
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return ((keyboard_fd >= 0) && (saved_kbd_mode >= 0));
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}
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int
FB_EnterGraphicsMode(_THIS)
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{
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struct termios keyboard_termios;
/* Set medium-raw keyboard mode */
if ((keyboard_fd >= 0) && !FB_InGraphicsMode(this)) {
/* Switch to the correct virtual terminal */
if (current_vt > 0) {
struct vt_stat vtstate;
if (ioctl(keyboard_fd, VT_GETSTATE, &vtstate) == 0) {
saved_vt = vtstate.v_active;
}
if (ioctl(keyboard_fd, VT_ACTIVATE, current_vt) == 0) {
ioctl(keyboard_fd, VT_WAITACTIVE, current_vt);
}
}
/* Set the terminal input mode */
if (tcgetattr(keyboard_fd, &saved_kbd_termios) < 0) {
SDL_SetError("Unable to get terminal attributes");
if (keyboard_fd > 0) {
close(keyboard_fd);
}
keyboard_fd = -1;
return (-1);
}
if (ioctl(keyboard_fd, KDGKBMODE, &saved_kbd_mode) < 0) {
SDL_SetError("Unable to get current keyboard mode");
if (keyboard_fd > 0) {
close(keyboard_fd);
}
keyboard_fd = -1;
return (-1);
}
keyboard_termios = saved_kbd_termios;
keyboard_termios.c_lflag &= ~(ICANON | ECHO | ISIG);
keyboard_termios.c_iflag &=
~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
keyboard_termios.c_cc[VMIN] = 0;
keyboard_termios.c_cc[VTIME] = 0;
if (tcsetattr(keyboard_fd, TCSAFLUSH, &keyboard_termios) < 0) {
FB_CloseKeyboard(this);
SDL_SetError("Unable to set terminal attributes");
return (-1);
}
/* This will fail if we aren't root or this isn't our tty */
if (ioctl(keyboard_fd, KDSKBMODE, K_MEDIUMRAW) < 0) {
FB_CloseKeyboard(this);
SDL_SetError("Unable to set keyboard in raw mode");
return (-1);
}
if (ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS) < 0) {
FB_CloseKeyboard(this);
SDL_SetError("Unable to set keyboard in graphics mode");
return (-1);
}
/* Prevent switching the virtual terminal */
ioctl(keyboard_fd, VT_LOCKSWITCH, 1);
}
return (keyboard_fd);
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}
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void
FB_LeaveGraphicsMode(_THIS)
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{
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if (FB_InGraphicsMode(this)) {
ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
ioctl(keyboard_fd, KDSKBMODE, saved_kbd_mode);
tcsetattr(keyboard_fd, TCSAFLUSH, &saved_kbd_termios);
saved_kbd_mode = -1;
/* Head back over to the original virtual terminal */
ioctl(keyboard_fd, VT_UNLOCKSWITCH, 1);
if (saved_vt > 0) {
ioctl(keyboard_fd, VT_ACTIVATE, saved_vt);
}
}
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}
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void
FB_CloseKeyboard(_THIS)
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{
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if (keyboard_fd >= 0) {
FB_LeaveGraphicsMode(this);
if (keyboard_fd > 0) {
close(keyboard_fd);
}
}
keyboard_fd = -1;
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}
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int
FB_OpenKeyboard(_THIS)
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{
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/* Open only if not already opened */
if (keyboard_fd < 0) {
static const char *const tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
static const char *const vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
int i, tty0_fd;
/* Try to query for a free virtual terminal */
tty0_fd = -1;
for (i = 0; tty0[i] && (tty0_fd < 0); ++i) {
tty0_fd = open(tty0[i], O_WRONLY, 0);
}
if (tty0_fd < 0) {
tty0_fd = dup(0); /* Maybe stdin is a VT? */
}
ioctl(tty0_fd, VT_OPENQRY, ¤t_vt);
close(tty0_fd);
if ((geteuid() == 0) && (current_vt > 0)) {
for (i = 0; vcs[i] && (keyboard_fd < 0); ++i) {
char vtpath[12];
SDL_snprintf(vtpath, SDL_arraysize(vtpath), vcs[i],
current_vt);
keyboard_fd = open(vtpath, O_RDWR, 0);
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#ifdef DEBUG_KEYBOARD
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fprintf(stderr, "vtpath = %s, fd = %d\n",
vtpath, keyboard_fd);
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#endif /* DEBUG_KEYBOARD */
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/* This needs to be our controlling tty
so that the kernel ioctl() calls work
*/
if (keyboard_fd >= 0) {
tty0_fd = open("/dev/tty", O_RDWR, 0);
if (tty0_fd >= 0) {
ioctl(tty0_fd, TIOCNOTTY, 0);
close(tty0_fd);
}
}
}
}
if (keyboard_fd < 0) {
/* Last resort, maybe our tty is a usable VT */
struct vt_stat vtstate;
keyboard_fd = open("/dev/tty", O_RDWR);
if (ioctl(keyboard_fd, VT_GETSTATE, &vtstate) == 0) {
current_vt = vtstate.v_active;
} else {
current_vt = 0;
}
}
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#ifdef DEBUG_KEYBOARD
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fprintf(stderr, "Current VT: %d\n", current_vt);
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#endif
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saved_kbd_mode = -1;
/* Make sure that our input is a console terminal */
{
int dummy;
if (ioctl(keyboard_fd, KDGKBMODE, &dummy) < 0) {
close(keyboard_fd);
keyboard_fd = -1;
SDL_SetError("Unable to open a console terminal");
}
}
/* Set up keymap */
FB_vgainitkeymaps(keyboard_fd);
}
return (keyboard_fd);
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}
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static enum
{
MOUSE_NONE = -1,
MOUSE_MSC, /* Note: GPM uses the MSC protocol */
MOUSE_PS2,
MOUSE_IMPS2,
MOUSE_MS,
MOUSE_BM,
MOUSE_ELO,
MOUSE_TSLIB,
NUM_MOUSE_DRVS
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} mouse_drv = MOUSE_NONE;
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void
FB_CloseMouse(_THIS)
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{
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#if SDL_INPUT_TSLIB
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if (ts_dev != NULL) {
ts_close(ts_dev);
ts_dev = NULL;
mouse_fd = -1;
}
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#endif /* SDL_INPUT_TSLIB */
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if (mouse_fd > 0) {
close(mouse_fd);
}
mouse_fd = -1;
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}
/* Returns processes listed in /proc with the desired name */
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static int
find_pid(DIR * proc, const char *wanted_name)
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{
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struct dirent *entry;
int pid;
/* First scan proc for the gpm process */
pid = 0;
while ((pid == 0) && ((entry = readdir(proc)) != NULL)) {
if (isdigit(entry->d_name[0])) {
FILE *status;
char path[PATH_MAX];
char name[PATH_MAX];
SDL_snprintf(path, SDL_arraysize(path), "/proc/%s/status",
entry->d_name);
status = fopen(path, "r");
if (status) {
name[0] = '\0';
fscanf(status, "Name: %s", name);
if (SDL_strcmp(name, wanted_name) == 0) {
pid = SDL_atoi(entry->d_name);
}
fclose(status);
}
}
}
return pid;
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}
/* Returns true if /dev/gpmdata is being written to by gpm */
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static int
gpm_available(char *proto, size_t protolen)
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{
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int available;
DIR *proc;
int pid;
int cmdline, len, arglen;
char path[PATH_MAX];
char args[PATH_MAX], *arg;
/* Don't bother looking if the fifo isn't there */
#ifdef DEBUG_MOUSE
fprintf(stderr, "testing gpm\n");
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#endif
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if (access(GPM_NODE_FIFO, F_OK) < 0) {
return (0);
}
available = 0;
proc = opendir("/proc");
if (proc) {
char raw_proto[10] = { '\0' };
char repeat_proto[10] = { '\0' };
while (!available && (pid = find_pid(proc, "gpm")) > 0) {
SDL_snprintf(path, SDL_arraysize(path), "/proc/%d/cmdline", pid);
cmdline = open(path, O_RDONLY, 0);
if (cmdline >= 0) {
len = read(cmdline, args, sizeof(args));
arg = args;
while (len > 0) {
arglen = SDL_strlen(arg) + 1;
#ifdef DEBUG_MOUSE
fprintf(stderr, "gpm arg %s len %d\n", arg, arglen);
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#endif
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if (SDL_strcmp(arg, "-t") == 0) {
/* protocol string, keep it for later */
char *t, *s;
t = arg + arglen;
s = SDL_strchr(t, ' ');
if (s)
*s = 0;
SDL_strlcpy(raw_proto, t, SDL_arraysize(raw_proto));
if (s)
*s = ' ';
}
if (SDL_strncmp(arg, "-R", 2) == 0) {
char *t, *s;
available = 1;
t = arg + 2;
s = SDL_strchr(t, ' ');
if (s)
*s = 0;
SDL_strlcpy(repeat_proto, t,
SDL_arraysize(repeat_proto));
if (s)
*s = ' ';
}
len -= arglen;
arg += arglen;
}
close(cmdline);
}
}
closedir(proc);
if (available) {
if (SDL_strcmp(repeat_proto, "raw") == 0) {
SDL_strlcpy(proto, raw_proto, protolen);
} else if (*repeat_proto) {
SDL_strlcpy(proto, repeat_proto, protolen);
} else {
SDL_strlcpy(proto, "msc", protolen);
}
}
}
return available;
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}
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/* rcg06112001 Set up IMPS/2 mode, if possible. This gives
* us access to the mousewheel, etc. Returns zero if
* writes to device failed, but you still need to query the
* device to see which mode it's actually in.
*/
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static int
set_imps2_mode(int fd)
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{
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/* If you wanted to control the mouse mode (and we do :) ) ...
Set IMPS/2 protocol:
{0xf3,200,0xf3,100,0xf3,80}
Reset mouse device:
{0xFF}
*/
Uint8 set_imps2[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 };
/*Uint8 reset = 0xff; */
fd_set fdset;
struct timeval tv;
int retval = 0;
if (write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2)) {
/* Don't reset it, that'll clear IMPS/2 mode on some mice
if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
retval = 1;
}
*/
}
/* Get rid of any chatter from the above */
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
tv.tv_sec = 0;
tv.tv_usec = 0;
while (select(fd + 1, &fdset, 0, 0, &tv) > 0) {
char temp[32];
read(fd, temp, sizeof(temp));
}
return retval;
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}
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/* Returns true if the mouse uses the IMPS/2 protocol */
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static int
detect_imps2(int fd)
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{
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int imps2;
imps2 = 0;
if (SDL_getenv("SDL_MOUSEDEV_IMPS2")) {
imps2 = 1;
}
if (!imps2) {
Uint8 query_ps2 = 0xF2;
fd_set fdset;
struct timeval tv;
/* Get rid of any mouse motion noise */
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
tv.tv_sec = 0;
tv.tv_usec = 0;
while (select(fd + 1, &fdset, 0, 0, &tv) > 0) {
char temp[32];
read(fd, temp, sizeof(temp));
}
/* Query for the type of mouse protocol */
if (write(fd, &query_ps2, sizeof(query_ps2)) == sizeof(query_ps2)) {
Uint8 ch = 0;
/* Get the mouse protocol response */
do {
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
tv.tv_sec = 1;
tv.tv_usec = 0;
if (select(fd + 1, &fdset, 0, 0, &tv) < 1) {
break;
}
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} while ((read(fd, &ch, sizeof(ch)) == sizeof(ch)) &&
((ch == 0xFA) || (ch == 0xAA)));
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/* Experimental values (Logitech wheelmouse) */
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
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#endif
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if ((ch == 3) || (ch == 4)) {
imps2 = 1;
}
}
}
return imps2;
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}
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int
FB_OpenMouse(_THIS)
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{
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int i;
const char *mousedev;
const char *mousedrv;
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mousedrv = SDL_getenv("SDL_MOUSEDRV");
mousedev = SDL_getenv("SDL_MOUSEDEV");
mouse_fd = -1;
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#if SDL_INPUT_TSLIB
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if (mousedrv && (SDL_strcmp(mousedrv, "TSLIB") == 0)) {
if (mousedev == NULL)
mousedev = SDL_getenv("TSLIB_TSDEVICE");
if (mousedev != NULL) {
ts_dev = ts_open(mousedev, 1);
if ((ts_dev != NULL) && (ts_config(ts_dev) >= 0)) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using tslib touchscreen\n");
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#endif
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mouse_drv = MOUSE_TSLIB;
mouse_fd = ts_fd(ts_dev);
return mouse_fd;
}
}
mouse_drv = MOUSE_NONE;
return mouse_fd;
}
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#endif /* SDL_INPUT_TSLIB */
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/* ELO TOUCHSCREEN SUPPORT */
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if (mousedrv && (SDL_strcmp(mousedrv, "ELO") == 0)) {
mouse_fd = open(mousedev, O_RDWR);
if (mouse_fd >= 0) {
if (eloInitController(mouse_fd)) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using ELO touchscreen\n");
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#endif
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mouse_drv = MOUSE_ELO;
}
} else if (mouse_fd < 0) {
mouse_drv = MOUSE_NONE;
}
return (mouse_fd);
}
/* STD MICE */
if (mousedev == NULL) {
/* FIXME someday... allow multiple mice in this driver */
static const char *ps2mice[] = {
"/dev/input/mice", "/dev/usbmouse", "/dev/psaux", NULL
};
/* First try to use GPM in repeater mode */
if (mouse_fd < 0) {
char proto[10];
if (gpm_available(proto, SDL_arraysize(proto))) {
mouse_fd = open(GPM_NODE_FIFO, O_RDONLY, 0);
if (mouse_fd >= 0) {
if (SDL_strcmp(proto, "msc") == 0) {
mouse_drv = MOUSE_MSC;
} else if (SDL_strcmp(proto, "ps2") == 0) {
mouse_drv = MOUSE_PS2;
} else if (SDL_strcmp(proto, "imps2") == 0) {
mouse_drv = MOUSE_IMPS2;
} else if (SDL_strcmp(proto, "ms") == 0 ||
SDL_strcmp(proto, "bare") == 0) {
mouse_drv = MOUSE_MS;
} else if (SDL_strcmp(proto, "bm") == 0) {
mouse_drv = MOUSE_BM;
} else {
/* Unknown protocol... */
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#ifdef DEBUG_MOUSE
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fprintf(stderr,
"GPM mouse using unknown protocol = %s\n",
proto);
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#endif
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close(mouse_fd);
mouse_fd = -1;
}
}
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#ifdef DEBUG_MOUSE
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if (mouse_fd >= 0) {
fprintf(stderr,
"Using GPM mouse, protocol = %s\n", proto);
}
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#endif /* DEBUG_MOUSE */
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}
}
/* Now try to use a modern PS/2 mouse */
for (i = 0; (mouse_fd < 0) && ps2mice[i]; ++i) {
mouse_fd = open(ps2mice[i], O_RDWR, 0);
if (mouse_fd < 0) {
mouse_fd = open(ps2mice[i], O_RDONLY, 0);
}
if (mouse_fd >= 0) {
/* rcg06112001 Attempt to set IMPS/2 mode */
set_imps2_mode(mouse_fd);
if (detect_imps2(mouse_fd)) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using IMPS2 mouse\n");
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#endif
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mouse_drv = MOUSE_IMPS2;
} else {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using PS2 mouse\n");
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#endif
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mouse_drv = MOUSE_PS2;
}
}
}
/* Next try to use a PPC ADB port mouse */
if (mouse_fd < 0) {
mouse_fd = open("/dev/adbmouse", O_RDONLY, 0);
if (mouse_fd >= 0) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using ADB mouse\n");
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#endif
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mouse_drv = MOUSE_BM;
}
}
}
/* Default to a serial Microsoft mouse */
if (mouse_fd < 0) {
if (mousedev == NULL) {
mousedev = "/dev/mouse";
}
mouse_fd = open(mousedev, O_RDONLY, 0);
if (mouse_fd >= 0) {
struct termios mouse_termios;
/* Set the sampling speed to 1200 baud */
tcgetattr(mouse_fd, &mouse_termios);
mouse_termios.c_iflag = IGNBRK | IGNPAR;
mouse_termios.c_oflag = 0;
mouse_termios.c_lflag = 0;
mouse_termios.c_line = 0;
mouse_termios.c_cc[VTIME] = 0;
mouse_termios.c_cc[VMIN] = 1;
mouse_termios.c_cflag = CREAD | CLOCAL | HUPCL;
mouse_termios.c_cflag |= CS8;
mouse_termios.c_cflag |= B1200;
tcsetattr(mouse_fd, TCSAFLUSH, &mouse_termios);
if (mousedrv && (SDL_strcmp(mousedrv, "PS2") == 0)) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr,
"Using (user specified) PS2 mouse on %s\n", mousedev);
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#endif
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mouse_drv = MOUSE_PS2;
} else {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using (default) MS mouse on %s\n", mousedev);
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#endif
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mouse_drv = MOUSE_MS;
}
}
}
if (mouse_fd < 0) {
mouse_drv = MOUSE_NONE;
}
return (mouse_fd);
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}
static int posted = 0;
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void
FB_vgamousecallback(int button, int relative, int dx, int dy)
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{
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int button_1, button_3;
int button_state;
int state_changed;
int i;
Uint8 state;
if (dx || dy) {
posted += SDL_PrivateMouseMotion(0, relative, dx, dy);
}
/* Swap button 1 and 3 */
button_1 = (button & 0x04) >> 2;
button_3 = (button & 0x01) << 2;
button &= ~0x05;
button |= (button_1 | button_3);
/* See what changed */
button_state = SDL_GetMouseState(NULL, NULL);
state_changed = button_state ^ button;
for (i = 0; i < 8; ++i) {
if (state_changed & (1 << i)) {
if (button & (1 << i)) {
state = SDL_PRESSED;
} else {
state = SDL_RELEASED;
}
posted += SDL_PrivateMouseButton(state, i + 1, 0, 0);
}
}
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}
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/* Handle input from tslib */
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#if SDL_INPUT_TSLIB
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static void
handle_tslib(_THIS)
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{
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struct ts_sample sample;
int button;
while (ts_read(ts_dev, &sample, 1) > 0) {
button = (sample.pressure > 0) ? 1 : 0;
button <<= 2; /* must report it as button 3 */
FB_vgamousecallback(button, 0, sample.x, sample.y);
}
return;
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}
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#endif /* SDL_INPUT_TSLIB */
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/* For now, use MSC, PS/2, and MS protocols
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Driver adapted from the SVGAlib mouse driver code (taken from gpm, etc.)
*/
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static void
handle_mouse(_THIS)
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{
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static int start = 0;
static unsigned char mousebuf[BUFSIZ];
static int relative = 1;
int i, nread;
int button = 0;
int dx = 0, dy = 0;
int packetsize = 0;
int realx, realy;
/* Figure out the mouse packet size */
switch (mouse_drv) {
case MOUSE_NONE:
/* Ack! */
read(mouse_fd, mousebuf, BUFSIZ);
return;
case MOUSE_MSC:
packetsize = 5;
break;
case MOUSE_IMPS2:
packetsize = 4;
break;
case MOUSE_PS2:
case MOUSE_MS:
case MOUSE_BM:
packetsize = 3;
break;
case MOUSE_ELO:
/* try to read the next packet */
if (eloReadPosition
(this, mouse_fd, &dx, &dy, &button, &realx, &realy)) {
button = (button & 0x01) << 2;
FB_vgamousecallback(button, 0, dx, dy);
}
return; /* nothing left to do */
case MOUSE_TSLIB:
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#if SDL_INPUT_TSLIB
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handle_tslib(this);
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#endif
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return; /* nothing left to do */
default:
/* Uh oh.. */
packetsize = 0;
break;
}
/* Special handling for the quite sensitive ELO controller */
if (mouse_drv == MOUSE_ELO) {
}
/* Read as many packets as possible */
nread = read(mouse_fd, &mousebuf[start], BUFSIZ - start);
if (nread < 0) {
return;
}
nread += start;
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#ifdef DEBUG_MOUSE
847
fprintf(stderr, "Read %d bytes from mouse, start = %d\n", nread, start);
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#endif
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for (i = 0; i < (nread - (packetsize - 1)); i += packetsize) {
switch (mouse_drv) {
case MOUSE_NONE:
break;
case MOUSE_MSC:
/* MSC protocol has 0x80 in high byte */
if ((mousebuf[i] & 0xF8) != 0x80) {
/* Go to next byte */
i -= (packetsize - 1);
continue;
}
/* Get current mouse state */
button = (~mousebuf[i]) & 0x07;
dx = (signed char) (mousebuf[i + 1]) +
(signed char) (mousebuf[i + 3]);
dy = -((signed char) (mousebuf[i + 2]) +
(signed char) (mousebuf[i + 4]));
break;
case MOUSE_PS2:
/* PS/2 protocol has nothing in high byte */
if ((mousebuf[i] & 0xC0) != 0) {
/* Go to next byte */
i -= (packetsize - 1);
continue;
}
/* Get current mouse state */
button = (mousebuf[i] & 0x04) >> 1 | /*Middle */
(mousebuf[i] & 0x02) >> 1 | /*Right */
(mousebuf[i] & 0x01) << 2; /*Left */
dx = (mousebuf[i] & 0x10) ?
mousebuf[i + 1] - 256 : mousebuf[i + 1];
dy = (mousebuf[i] & 0x20) ?
-(mousebuf[i + 2] - 256) : -mousebuf[i + 2];
break;
case MOUSE_IMPS2:
/* Get current mouse state */
button = (mousebuf[i] & 0x04) >> 1 | /*Middle */
(mousebuf[i] & 0x02) >> 1 | /*Right */
(mousebuf[i] & 0x01) << 2 | /*Left */
(mousebuf[i] & 0x40) >> 3 | /* 4 */
(mousebuf[i] & 0x80) >> 3; /* 5 */
dx = (mousebuf[i] & 0x10) ?
mousebuf[i + 1] - 256 : mousebuf[i + 1];
dy = (mousebuf[i] & 0x20) ?
-(mousebuf[i + 2] - 256) : -mousebuf[i + 2];
switch (mousebuf[i + 3] & 0x0F) {
case 0x0E: /* DX = +1 */
case 0x02: /* DX = -1 */
break;
case 0x0F: /* DY = +1 (map button 4) */
FB_vgamousecallback(button | (1 << 3), 1, 0, 0);
break;
case 0x01: /* DY = -1 (map button 5) */
FB_vgamousecallback(button | (1 << 4), 1, 0, 0);
break;
}
break;
case MOUSE_MS:
/* Microsoft protocol has 0x40 in high byte */
if ((mousebuf[i] & 0x40) != 0x40) {
/* Go to next byte */
i -= (packetsize - 1);
continue;
}
/* Get current mouse state */
button = ((mousebuf[i] & 0x20) >> 3) |
((mousebuf[i] & 0x10) >> 4);
dx = (signed char) (((mousebuf[i] & 0x03) << 6) |
(mousebuf[i + 1] & 0x3F));
dy = (signed char) (((mousebuf[i] & 0x0C) << 4) |
(mousebuf[i + 2] & 0x3F));
break;
case MOUSE_BM:
/* BusMouse protocol has 0xF8 in high byte */
if ((mousebuf[i] & 0xF8) != 0x80) {
/* Go to next byte */
i -= (packetsize - 1);
continue;
}
/* Get current mouse state */
button = (~mousebuf[i]) & 0x07;
dx = (signed char) mousebuf[i + 1];
dy = -(signed char) mousebuf[i + 2];
break;
default:
/* Uh oh.. */
dx = 0;
dy = 0;
break;
}
FB_vgamousecallback(button, relative, dx, dy);
}
if (i < nread) {
SDL_memcpy(mousebuf, &mousebuf[i], (nread - i));
start = (nread - i);
} else {
start = 0;
}
return;
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949
}
950
/* Handle switching to another VC, returns when our VC is back */
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static void
switch_vt_prep(_THIS)
953
{
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SDL_Surface *screen = SDL_VideoSurface;
SDL_PrivateAppActive(0,
(SDL_APPACTIVE | SDL_APPINPUTFOCUS |
SDL_APPMOUSEFOCUS));
/* Save the contents of the screen, and go to text mode */
wait_idle(this);
screen_arealen = ((screen->h + (2 * this->offset_y)) * screen->pitch);
screen_contents = (Uint8 *) SDL_malloc(screen_arealen);
if (screen_contents) {
SDL_memcpy(screen_contents, screen->pixels, screen_arealen);
}
FB_SavePaletteTo(this, 256, screen_palette);
ioctl(console_fd, FBIOGET_VSCREENINFO, &screen_vinfo);
ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
ioctl(keyboard_fd, VT_UNLOCKSWITCH, 1);
971
}
972
973
974
static void
switch_vt_done(_THIS)
975
{
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SDL_Surface *screen = SDL_VideoSurface;
/* Restore graphics mode and the contents of the screen */
ioctl(keyboard_fd, VT_LOCKSWITCH, 1);
ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS);
ioctl(console_fd, FBIOPUT_VSCREENINFO, &screen_vinfo);
FB_RestorePaletteFrom(this, 256, screen_palette);
if (screen_contents) {
SDL_memcpy(screen->pixels, screen_contents, screen_arealen);
SDL_free(screen_contents);
screen_contents = NULL;
}
/* Get updates to the shadow surface while switched away */
if (SDL_ShadowSurface) {
SDL_UpdateRect(SDL_ShadowSurface, 0, 0, 0, 0);
}
SDL_PrivateAppActive(1,
(SDL_APPACTIVE | SDL_APPINPUTFOCUS |
SDL_APPMOUSEFOCUS));
997
}
998
999
1000
static void
switch_vt(_THIS, unsigned short which)