static void
initialize_mousetype(void)
{
static const char *xterm_kmous = "\033[M";
/* Try gpm first, because gpm may be configured to run in xterm */
#if USE_GPM_SUPPORT
/* GPM: initialize connection to gpm server */
gpm_connect.eventMask = GPM_DOWN | GPM_UP;
gpm_connect.defaultMask = ~(gpm_connect.eventMask | GPM_HARD);
gpm_connect.minMod = 0;
gpm_connect.maxMod = ~((1 << KG_SHIFT) | (1 << KG_SHIFTL) | (1 << KG_SHIFTR));
if (Gpm_Open(&gpm_connect, 0) >= 0) { /* returns the file-descriptor */
mousetype = M_GPM;
SP->_mouse_fd = gpm_fd;
return;
}
#endif
/* OS/2 VIO */
#ifdef USE_EMX_MOUSE
if (!mouse_thread
&& strstr(cur_term->type.term_names, "xterm") == 0
&& key_mouse) {
int handles[2];
if (pipe(handles) < 0) {
perror("mouse pipe error");
return;
} else {
int rc;
if (!mouse_buttons[0]) {
char *s = getenv("MOUSE_BUTTONS_123");
mouse_buttons[0] = 1;
if (s && strlen(s) >= 3) {
mouse_buttons[1] = s[0] - '0';
mouse_buttons[2] = s[1] - '0';
mouse_buttons[3] = s[2] - '0';
}
}
mouse_wfd = handles[1];
M_FD(SP) = handles[0];
/* Needed? */
setmode(handles[0], O_BINARY);
setmode(handles[1], O_BINARY);
/* Do not use CRT functions, we may single-threaded. */
rc = DosCreateThread((unsigned long *) &mouse_thread,
mouse_server, 0, 0, 8192);
if (rc) {
printf("mouse thread error %d=%#x", rc, rc);
return;
} else {
mousetype = M_XTERM;
return;
}
}
}
#endif
/* we know how to recognize mouse events under "xterm" */
if (key_mouse != 0) {
if (!strcmp(key_mouse, xterm_kmous)) {
mousetype = M_XTERM;
return;
}
} else if (strstr(cur_term->type.term_names, "xterm") != 0) {
(void) _nc_add_to_try(&(SP->_keytry), xterm_kmous, KEY_MOUSE);
mousetype = M_XTERM;
return;
}
}
/*
* Query to see if there is a pending mouse event. This is called from
* fifo_push() in lib_getch.c
*/
static bool
_nc_mouse_event(SCREEN *sp)
{
MEVENT *eventp = sp->_mouse_eventp;
bool result = FALSE;
(void) eventp;
switch (sp->_mouse_type) {
case M_XTERM:
/* xterm: never have to query, mouse events are in the keyboard stream */
#if USE_EMX_MOUSE
{
char kbuf[3];
int i, res = read(M_FD(sp), &kbuf, 3); /* Eat the prefix */
if (res != 3)
printf("Got %d chars instead of 3 for prefix.\n", res);
for (i = 0; i < res; i++) {
if (kbuf[i] != key_mouse[i])
printf("Got char %d instead of %d for prefix.\n",
(int) kbuf[i], (int) key_mouse[i]);
}
result = TRUE;
}
#endif /* USE_EMX_MOUSE */
break;
#if USE_GPM_SUPPORT
case M_GPM:
if (sp->_mouse_fd >= 0) {
/* query server for event, return TRUE if we find one */
Gpm_Event ev;
switch (my_Gpm_GetEvent(&ev)) {
case 0:
/* Connection closed, drop the mouse. */
sp->_mouse_fd = -1;
break;
case 1:
/* there's only one mouse... */
eventp->id = NORMAL_EVENT;
eventp->bstate = 0;
switch (ev.type & 0x0f) {
case (GPM_DOWN):
if (ev.buttons & GPM_B_LEFT)
eventp->bstate |= BUTTON1_PRESSED;
if (ev.buttons & GPM_B_MIDDLE)
eventp->bstate |= BUTTON2_PRESSED;
if (ev.buttons & GPM_B_RIGHT)
eventp->bstate |= BUTTON3_PRESSED;
break;
case (GPM_UP):
if (ev.buttons & GPM_B_LEFT)
eventp->bstate |= BUTTON1_RELEASED;
if (ev.buttons & GPM_B_MIDDLE)
eventp->bstate |= BUTTON2_RELEASED;
if (ev.buttons & GPM_B_RIGHT)
eventp->bstate |= BUTTON3_RELEASED;
break;
default:
break;
}
eventp->x = ev.x - 1;
eventp->y = ev.y - 1;
eventp->z = 0;
/* bump the next-free pointer into the circular list */
sp->_mouse_eventp = NEXT(eventp);
result = TRUE;
break;
}
}
break;
#endif
#if USE_SYSMOUSE
case M_SYSMOUSE:
if (sp->_sysmouse_head < sp->_sysmouse_tail) {
*eventp = sp->_sysmouse_fifo[sp->_sysmouse_head];
/*
* Point the fifo-head to the next possible location. If there
* are none, reset the indices. This may be interrupted by the
* signal handler, doing essentially the same reset.
*/
sp->_sysmouse_head += 1;
if (sp->_sysmouse_head == sp->_sysmouse_tail) {
sp->_sysmouse_tail = 0;
sp->_sysmouse_head = 0;
}
/* bump the next-free pointer into the circular list */
sp->_mouse_eventp = eventp = NEXT(eventp);
result = TRUE;
}
break;
#endif /* USE_SYSMOUSE */
#ifdef USE_TERM_DRIVER
case M_TERM_DRIVER:
while (sp->_drv_mouse_head < sp->_drv_mouse_tail) {
*eventp = sp->_drv_mouse_fifo[sp->_drv_mouse_head];
/*
* Point the fifo-head to the next possible location. If there
* are none, reset the indices.
*/
sp->_drv_mouse_head += 1;
if (sp->_drv_mouse_head == sp->_drv_mouse_tail) {
sp->_drv_mouse_tail = 0;
sp->_drv_mouse_head = 0;
}
/* bump the next-free pointer into the circular list */
sp->_mouse_eventp = eventp = NEXT(eventp);
result = TRUE;
}
break;
#endif
case M_NONE:
break;
}
return result; /* true if we found an event */
}
static bool
_nc_mouse_inline(SCREEN *sp)
/* mouse report received in the keyboard stream -- parse its info */
{
int b;
bool result = FALSE;
MEVENT *eventp = sp->_mouse_eventp;
TR(MY_TRACE, ("_nc_mouse_inline() called"));
if (sp->_mouse_type == M_XTERM) {
unsigned char kbuf[4];
mmask_t prev;
size_t grabbed;
int res;
/* This code requires that your xterm entry contain the kmous
* capability and that it be set to the \E[M documented in the
* Xterm Control Sequences reference. This is how we
* arrange for mouse events to be reported via a KEY_MOUSE
* return value from wgetch(). After this value is received,
* _nc_mouse_inline() gets called and is immediately
* responsible for parsing the mouse status information
* following the prefix.
*
* The following quotes from the ctrlseqs.ms document in the
* X distribution, describing the X mouse tracking feature:
*
* Parameters for all mouse tracking escape sequences
* generated by xterm encode numeric parameters in a single
* character as value+040. For example, ! is 1.
*
* On button press or release, xterm sends ESC [ M CbCxCy.
* The low two bits of Cb encode button information: 0=MB1
* pressed, 1=MB2 pressed, 2=MB3 pressed, 3=release. The
* upper bits encode what modifiers were down when the
* button was pressed and are added together. 4=Shift,
* 8=Meta, 16=Control. Cx and Cy are the x and y coordinates
* of the mouse event. The upper left corner is (1,1).
*
* (End quote) By the time we get here, we've eaten the
* key prefix. FYI, the loop below is necessary because
* mouse click info isn't guaranteed to present as a
* single clist item.
*
* Wheel mice may return buttons 4 and 5 when the wheel is turned.
* We encode those as button presses.
*/
# if USE_PTHREADS_EINTR
# if USE_WEAK_SYMBOLS
if ((pthread_self) && (pthread_kill) && (pthread_equal))
# endif
_nc_globals.read_thread = pthread_self();
# endif
for (grabbed = 0; grabbed < 3; grabbed += (size_t) res) {
/* For VIO mouse we add extra bit 64 to disambiguate button-up. */
#if USE_EMX_MOUSE
res = (int) read(M_FD(sp) >= 0 ? M_FD(sp) : sp->_ifd, &kbuf, 3);
#else
res = (int) read(sp->_ifd, kbuf + grabbed, 3 - grabbed);
#endif
if (res == -1)
break;
}
#if USE_PTHREADS_EINTR
_nc_globals.read_thread = 0;
#endif
kbuf[3] = '\0';
TR(TRACE_IEVENT,
("_nc_mouse_inline sees the following xterm data: '%s'", kbuf));
/* there's only one mouse... */
eventp->id = NORMAL_EVENT;
/* processing code goes here */
eventp->bstate = 0;
prev = PREV(eventp)->bstate;
#if USE_EMX_MOUSE
#define PRESS_POSITION(n) \
eventp->bstate = MASK_PRESS(n); \
if (kbuf[0] & 0x40) \
eventp->bstate = MASK_RELEASE(n)
#else
#define PRESS_POSITION(n) \
eventp->bstate = (mmask_t) (prev & MASK_PRESS(n) \
? REPORT_MOUSE_POSITION \
: MASK_PRESS(n))
#endif
switch (kbuf[0] & 0x3) {
case 0x0:
if (kbuf[0] & 64)
eventp->bstate = MASK_PRESS(4);
else
PRESS_POSITION(1);
break;
case 0x1:
#if NCURSES_MOUSE_VERSION == 2
if (kbuf[0] & 64)
eventp->bstate = MASK_PRESS(5);
else
#endif
PRESS_POSITION(2);
break;
case 0x2:
PRESS_POSITION(3);
break;
case 0x3:
/*
* Release events aren't reported for individual buttons, just for
* the button set as a whole. However, because there are normally
* no mouse events under xterm that intervene between press and
* release, we can infer the button actually released by looking at
* the previous event.
*/
if (prev & (BUTTON_PRESSED | BUTTON_RELEASED)) {
eventp->bstate = BUTTON_RELEASED;
for (b = 1; b <= MAX_BUTTONS; ++b) {
if (!(prev & MASK_PRESS(b)))
eventp->bstate &= ~MASK_RELEASE(b);
}
} else {
/*
* XFree86 xterm will return a stream of release-events to
* let the application know where the mouse is going, if the
* private mode 1002 or 1003 is enabled.
*/
eventp->bstate = REPORT_MOUSE_POSITION;
}
break;
}
result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
if (kbuf[0] & 4) {
eventp->bstate |= BUTTON_SHIFT;
}
if (kbuf[0] & 8) {
eventp->bstate |= BUTTON_ALT;
}
if (kbuf[0] & 16) {
eventp->bstate |= BUTTON_CTRL;
}
eventp->x = (kbuf[1] - ' ') - 1;
eventp->y = (kbuf[2] - ' ') - 1;
TR(MY_TRACE,
("_nc_mouse_inline: primitive mouse-event %s has slot %ld",
_nc_tracemouse(sp, eventp),
(long) IndexEV(sp, eventp)));
/* bump the next-free pointer into the circular list */
sp->_mouse_eventp = NEXT(eventp);
#if 0 /* this return would be needed for QNX's mods to lib_getch.c */
return (TRUE);
#endif
}
return (result);
}
static void
initialize_mousetype(SCREEN *sp)
{
T((T_CALLED("initialize_mousetype()")));
/* Try gpm first, because gpm may be configured to run in xterm */
#if USE_GPM_SUPPORT
if (allow_gpm_mouse()) {
if (!sp->_mouse_gpm_loaded) {
#ifdef HAVE_LIBDL
load_gpm_library(sp);
#else /* !HAVE_LIBDL */
sp->_mouse_gpm_found = TRUE;
sp->_mouse_gpm_loaded = TRUE;
#endif
}
/*
* The gpm_fd file-descriptor may be negative (xterm). So we have to
* maintain our notion of whether the mouse connection is active
* without testing the file-descriptor.
*/
if (sp->_mouse_gpm_found && enable_gpm_mouse(sp, TRUE)) {
sp->_mouse_type = M_GPM;
sp->_mouse_fd = *(my_gpm_fd);
T(("GPM mouse_fd %d", sp->_mouse_fd));
returnVoid;
}
}
#endif /* USE_GPM_SUPPORT */
/* OS/2 VIO */
#if USE_EMX_MOUSE
if (!sp->_emxmouse_thread
&& strstr(TerminalOf(sp)->type.term_names, "xterm") == 0
&& key_mouse) {
int handles[2];
if (pipe(handles) < 0) {
perror("mouse pipe error");
returnVoid;
} else {
int rc;
if (!sp->_emxmouse_buttons[0]) {
char *s = getenv("MOUSE_BUTTONS_123");
sp->_emxmouse_buttons[0] = 1;
if (s && strlen(s) >= 3) {
sp->_emxmouse_buttons[1] = s[0] - '0';
sp->_emxmouse_buttons[2] = s[1] - '0';
sp->_emxmouse_buttons[3] = s[2] - '0';
} else {
sp->_emxmouse_buttons[1] = 1;
sp->_emxmouse_buttons[2] = 3;
sp->_emxmouse_buttons[3] = 2;
}
}
sp->_emxmouse_wfd = handles[1];
M_FD(sp) = handles[0];
/* Needed? */
setmode(handles[0], O_BINARY);
setmode(handles[1], O_BINARY);
/* Do not use CRT functions, we may single-threaded. */
rc = DosCreateThread((unsigned long *) &sp->_emxmouse_thread,
mouse_server, (long) sp, 0, 8192);
if (rc) {
printf("mouse thread error %d=%#x", rc, rc);
} else {
sp->_mouse_type = M_XTERM;
}
returnVoid;
}
}
#endif /* USE_EMX_MOUSE */
#if USE_SYSMOUSE
{
struct mouse_info the_mouse;
char *the_device = 0;
if (isatty(sp->_ifd))
the_device = ttyname(sp->_ifd);
if (the_device == 0)
the_device = "/dev/tty";
sp->_mouse_fd = open(the_device, O_RDWR);
if (sp->_mouse_fd >= 0) {
/*
* sysmouse does not have a usable user interface for obtaining
* mouse events. The logical way to proceed (reading data on a
* stream) only works if one opens the device as root. Even in
* that mode, careful examination shows we lose events
* occasionally. The interface provided for user programs is to
* establish a signal handler. really.
*
* Take over SIGUSR2 for this purpose since SIGUSR1 is more
* likely to be used by an application. getch() will have to
* handle the misleading EINTR's.
*/
signal(SIGUSR2, SIG_IGN);
the_mouse.operation = MOUSE_MODE;
the_mouse.u.mode.mode = 0;
the_mouse.u.mode.signal = SIGUSR2;
if (ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse) != -1) {
signal(SIGUSR2, handle_sysmouse);
the_mouse.operation = MOUSE_SHOW;
ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse);
#if defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) /* FreeBSD > 2.x */
{
#ifndef FBIO_GETMODE /* FreeBSD 3.x */
#define FBIO_GETMODE CONS_GET
#define FBIO_MODEINFO CONS_MODEINFO
#endif /* FBIO_GETMODE */
video_info_t the_video;
if (ioctl(sp->_mouse_fd,
FBIO_GETMODE,
&the_video.vi_mode) != -1
&& ioctl(sp->_mouse_fd,
FBIO_MODEINFO,
&the_video) != -1) {
sp->_sysmouse_char_width = the_video.vi_cwidth;
sp->_sysmouse_char_height = the_video.vi_cheight;
}
}
#endif /* defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) */
if (sp->_sysmouse_char_width <= 0)
sp->_sysmouse_char_width = 8;
if (sp->_sysmouse_char_height <= 0)
sp->_sysmouse_char_height = 16;
sp->_mouse_type = M_SYSMOUSE;
returnVoid;
}
}
}
#endif /* USE_SYSMOUSE */
#ifdef USE_TERM_DRIVER
CallDriver(sp, initmouse);
#else
/* we know how to recognize mouse events under "xterm" */
if (key_mouse != 0) {
if (!strcmp(key_mouse, xterm_kmous)
|| strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
init_xterm_mouse(sp);
}
} else if (strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
if (_nc_add_to_try(&(sp->_keytry), xterm_kmous, KEY_MOUSE) == OK)
init_xterm_mouse(sp);
}
#endif
returnVoid;
}
