1 /****************************************************************************
2 * Copyright (c) 1998-2011,2012 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 * and: Juergen Pfeifer 2008 *
34 ****************************************************************************/
37 * This module is intended to encapsulate ncurses's interface to pointing
40 * The primary method used is xterm's internal mouse-tracking facility.
41 * Additional methods depend on the platform:
42 * Alessandro Rubini's GPM server (Linux)
44 * special-purpose mouse interface for OS/2 EMX.
46 * Notes for implementors of new mouse-interface methods:
48 * The code is logically split into a lower level that accepts event reports
49 * in a device-dependent format and an upper level that parses mouse gestures
50 * and filters events. The mediating data structure is a circular queue of
53 * Functionally, the lower level's job is to pick up primitive events and
54 * put them on the circular queue. This can happen in one of two ways:
55 * either (a) _nc_mouse_event() detects a series of incoming mouse reports
56 * and queues them, or (b) code in lib_getch.c detects the kmous prefix in
57 * the keyboard input stream and calls _nc_mouse_inline to queue up a series
58 * of adjacent mouse reports.
60 * In either case, _nc_mouse_parse() should be called after the series is
61 * accepted to parse the digested mouse reports (low-level MEVENTs) into
62 * a gesture (a high-level or composite MEVENT).
64 * Don't be too shy about adding new event types or modifiers, if you can find
65 * room for them in the 32-bit mask. The API is written so that users get
66 * feedback on which theoretical event types they won't see when they call
67 * mousemask. There's one bit per button (the RESERVED_EVENT bit) not being
68 * used yet, and a couple of bits open at the high end.
77 # define INCL_DOSPROCESS
78 # include <os2.h> /* Need to include before the others */
81 #include <curses.priv.h>
84 #define CUR SP_TERMTYPE
87 MODULE_ID("$Id: lib_mouse.c,v 1.136 2012/02/22 22:40:24 tom Exp $")
92 #include <linux/keyboard.h> /* defines KG_* macros */
95 /* use dynamic loader to avoid linkage dependency */
99 #define my_RTLD RTLD_NOW
102 #define my_RTLD RTLD_LAZY
106 #endif /* RTLD_NOW */
107 #endif /* HAVE_LIBDL */
109 #endif /* USE_GPM_SUPPORT */
112 #undef buttons /* symbol conflict in consio.h */
113 #undef mouse_info /* symbol conflict in consio.h */
114 #include <osreldate.h>
115 #if (__FreeBSD_version >= 400017)
116 #include <sys/consio.h>
117 #include <sys/fbio.h>
119 #include <machine/console.h>
121 #endif /* use_SYSMOUSE */
124 #include <sys/socket.h>
125 #define pipe(handles) socketpair(AF_LOCAL, SOCK_STREAM, 0, handles)
126 #define DosWrite(hfile, pbuffer, cbwrite, pcbactual) \
127 write(hfile, pbuffer, cbwrite)
128 #define DosExit(action, result ) /* do nothing */
129 #define DosCreateThread(ptid, pfn, param, flag, cbStack) \
130 (*(ptid) = _beginthread(pfn, NULL, cbStack, \
131 (void *)param), (*(ptid) == -1))
134 #define MY_TRACE TRACE_ICALLS|TRACE_IEVENT
136 #define MASK_RELEASE(x) (mmask_t) NCURSES_MOUSE_MASK(x, 001)
137 #define MASK_PRESS(x) (mmask_t) NCURSES_MOUSE_MASK(x, 002)
138 #define MASK_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 004)
139 #define MASK_DOUBLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 010)
140 #define MASK_TRIPLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 020)
141 #define MASK_RESERVED_EVENT(x) (mmask_t) NCURSES_MOUSE_MASK(x, 040)
143 #if NCURSES_MOUSE_VERSION == 1
144 #define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED)
145 #define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED)
146 #define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED)
147 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED)
148 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED)
149 #define MAX_BUTTONS 4
151 #define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED | BUTTON5_CLICKED)
152 #define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED | BUTTON5_PRESSED)
153 #define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED | BUTTON5_RELEASED)
154 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED | BUTTON5_DOUBLE_CLICKED)
155 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED | BUTTON5_TRIPLE_CLICKED)
156 #define MAX_BUTTONS 5
159 #define INVALID_EVENT -1
160 #define NORMAL_EVENT 0
162 #define ValidEvent(ep) ((ep)->id != INVALID_EVENT)
163 #define Invalidate(ep) (ep)->id = INVALID_EVENT
167 #ifndef LIBGPM_SONAME
168 #define LIBGPM_SONAME "libgpm.so"
171 #define GET_DLSYM(name) (my_##name = (TYPE_##name) dlsym(sp->_dlopen_gpm, #name))
173 #endif /* USE_GPM_SUPPORT */
175 static bool _nc_mouse_parse(SCREEN *, int);
176 static void _nc_mouse_resume(SCREEN *);
177 static void _nc_mouse_wrap(SCREEN *);
179 /* maintain a circular list of mouse events */
181 #define FirstEV(sp) ((sp)->_mouse_events)
182 #define LastEV(sp) ((sp)->_mouse_events + EV_MAX - 1)
185 #define NEXT(ep) ((ep >= LastEV(SP_PARM)) \
190 #define PREV(ep) ((ep <= FirstEV(SP_PARM)) \
194 #define IndexEV(sp, ep) (ep - FirstEV(sp))
196 #define RunParams(sp, eventp, runp) \
197 (long) IndexEV(sp, runp), \
198 (long) (IndexEV(sp, eventp) + (EV_MAX - 1)) % EV_MAX
202 _trace_slot(SCREEN *sp, const char *tag)
208 for (ep = FirstEV(sp); ep <= LastEV(sp); ep++)
209 _tracef("mouse event queue slot %ld = %s",
210 (long) IndexEV(sp, ep),
211 _nc_tracemouse(sp, ep));
220 # define M_FD(sp) sp->_mouse_fd
223 write_event(SCREEN *sp, int down, int button, int x, int y)
226 unsigned long ignore;
228 strncpy(buf, key_mouse, 3); /* should be "\033[M" */
229 buf[3] = ' ' + (button - 1) + (down ? 0 : 0x40);
230 buf[4] = ' ' + x - LEFT_COL + 1;
231 buf[5] = ' ' + y - TOP_ROW + 1;
232 DosWrite(sp->_emxmouse_wfd, buf, 6, &ignore);
237 mouse_server(void *param)
239 mouse_server(unsigned long param)
242 SCREEN *sp = (SCREEN *) param;
243 unsigned short fWait = MOU_WAIT;
244 /* NOPTRRECT mourt = { 0,0,24,79 }; */
247 unsigned short mask = MOUSE_BN1_DOWN | MOUSE_BN2_DOWN | MOUSE_BN3_DOWN;
253 /* open the handle for the mouse */
254 if (MouOpen(NULL, &hmou) == 0) {
255 rc = MouSetEventMask(&mask, hmou);
256 if (rc) { /* retry with 2 buttons */
257 mask = MOUSE_BN1_DOWN | MOUSE_BN2_DOWN;
258 rc = MouSetEventMask(&mask, hmou);
261 if (rc == 0 && MouDrawPtr(hmou) == 0) {
263 /* sit and wait on the event queue */
264 rc = MouReadEventQue(&mouev, &fWait, hmou);
266 _nc_SPRINTF(err, _nc_SLIMIT(sizeof(err))
267 "Error reading mouse queue, rc=%lu.\r\n", rc);
270 if (!sp->_emxmouse_activated)
274 * OS/2 numbers a 3-button mouse inconsistently from other
280 if ((mouev.fs ^ oldstate) & MOUSE_BN1_DOWN)
281 write_event(sp, mouev.fs & MOUSE_BN1_DOWN,
282 sp->_emxmouse_buttons[1], mouev.col, mouev.row);
283 if ((mouev.fs ^ oldstate) & MOUSE_BN2_DOWN)
284 write_event(sp, mouev.fs & MOUSE_BN2_DOWN,
285 sp->_emxmouse_buttons[3], mouev.col, mouev.row);
286 if ((mouev.fs ^ oldstate) & MOUSE_BN3_DOWN)
287 write_event(sp, mouev.fs & MOUSE_BN3_DOWN,
288 sp->_emxmouse_buttons[2], mouev.col, mouev.row);
294 _nc_SPRINTF(err, _nc_SLIMIT(sizeof(err))
295 "Error setting event mask, buttons=%d, rc=%lu.\r\n",
299 DosWrite(2, err, strlen(err), &rc);
302 DosExit(EXIT_THREAD, 0L);
305 #endif /* USE_EMX_MOUSE */
309 sysmouse_server(SCREEN *sp)
311 struct mouse_info the_mouse;
314 the_mouse.operation = MOUSE_GETINFO;
316 && sp->_mouse_fd >= 0
317 && sp->_sysmouse_tail < FIFO_SIZE
318 && ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse) != -1) {
320 if (sp->_sysmouse_head > sp->_sysmouse_tail) {
321 sp->_sysmouse_tail = 0;
322 sp->_sysmouse_head = 0;
324 work = &(sp->_sysmouse_fifo[sp->_sysmouse_tail]);
325 memset(work, 0, sizeof(*work));
326 work->id = NORMAL_EVENT; /* there's only one mouse... */
328 sp->_sysmouse_old_buttons = sp->_sysmouse_new_buttons;
329 sp->_sysmouse_new_buttons = the_mouse.u.data.buttons & 0x7;
331 if (sp->_sysmouse_new_buttons) {
332 if (sp->_sysmouse_new_buttons & 1)
333 work->bstate |= BUTTON1_PRESSED;
334 if (sp->_sysmouse_new_buttons & 2)
335 work->bstate |= BUTTON2_PRESSED;
336 if (sp->_sysmouse_new_buttons & 4)
337 work->bstate |= BUTTON3_PRESSED;
339 if (sp->_sysmouse_old_buttons & 1)
340 work->bstate |= BUTTON1_RELEASED;
341 if (sp->_sysmouse_old_buttons & 2)
342 work->bstate |= BUTTON2_RELEASED;
343 if (sp->_sysmouse_old_buttons & 4)
344 work->bstate |= BUTTON3_RELEASED;
347 /* for cosmetic bug in syscons.c on FreeBSD 3.[34] */
348 the_mouse.operation = MOUSE_HIDE;
349 ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse);
350 the_mouse.operation = MOUSE_SHOW;
351 ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse);
354 * We're only interested if the button is pressed or released.
355 * FIXME: implement continuous event-tracking.
357 if (sp->_sysmouse_new_buttons != sp->_sysmouse_old_buttons) {
358 sp->_sysmouse_tail += 1;
360 work->x = the_mouse.u.data.x / sp->_sysmouse_char_width;
361 work->y = the_mouse.u.data.y / sp->_sysmouse_char_height;
366 handle_sysmouse(int sig GCC_UNUSED)
368 sysmouse_server(CURRENT_SCREEN);
370 #endif /* USE_SYSMOUSE */
372 #ifndef USE_TERM_DRIVER
373 #define xterm_kmous "\033[M"
376 init_xterm_mouse(SCREEN *sp)
378 sp->_mouse_type = M_XTERM;
379 sp->_mouse_xtermcap = tigetstr("XM");
380 if (!VALID_STRING(sp->_mouse_xtermcap))
381 sp->_mouse_xtermcap = "\033[?1000%?%p1%{1}%=%th%el%;";
386 enable_xterm_mouse(SCREEN *sp, int enable)
389 sp->_emxmouse_activated = enable;
391 NCURSES_SP_NAME(_nc_putp) (NCURSES_SP_ARGx
393 TPARM_1(sp->_mouse_xtermcap, enable));
395 sp->_mouse_active = enable;
400 allow_gpm_mouse(void)
404 /* GPM does printf's without checking if stdout is a terminal */
405 if (isatty(fileno(stdout))) {
406 char *list = getenv("NCURSES_GPM_TERMS");
407 char *env = getenv("TERM");
410 result = _nc_name_match(list, env, "|:");
413 /* GPM checks the beginning of the $TERM variable to decide if it
414 * should pass xterm events through. There is no real advantage in
415 * allowing GPM to do this. Recent versions relax that check, and
416 * pretend that GPM can work with any terminal having the kmous
417 * capability. Perhaps that works for someone. If so, they can
418 * set the environment variable (above).
420 if (env != 0 && strstr(env, "linux") != 0) {
430 unload_gpm_library(SCREEN *sp)
432 if (sp->_dlopen_gpm != 0) {
433 T(("unload GPM library"));
434 sp->_mouse_gpm_loaded = FALSE;
436 dlclose(sp->_dlopen_gpm);
442 load_gpm_library(SCREEN *sp)
444 sp->_mouse_gpm_found = FALSE;
445 if ((sp->_dlopen_gpm = dlopen(LIBGPM_SONAME, my_RTLD)) != 0) {
446 if (GET_DLSYM(gpm_fd) == 0 ||
447 GET_DLSYM(Gpm_Open) == 0 ||
448 GET_DLSYM(Gpm_Close) == 0 ||
449 GET_DLSYM(Gpm_GetEvent) == 0) {
450 T(("GPM initialization failed: %s", dlerror()));
451 unload_gpm_library(sp);
453 sp->_mouse_gpm_found = TRUE;
454 sp->_mouse_gpm_loaded = TRUE;
461 enable_gpm_mouse(SCREEN *sp, bool enable)
465 T((T_CALLED("enable_gpm_mouse(%d)"), enable));
467 if (enable && !sp->_mouse_active) {
469 if (sp->_mouse_gpm_found && !sp->_mouse_gpm_loaded) {
470 load_gpm_library(sp);
473 if (sp->_mouse_gpm_loaded) {
476 /* GPM: initialize connection to gpm server */
477 sp->_mouse_gpm_connect.eventMask = GPM_DOWN | GPM_UP;
478 sp->_mouse_gpm_connect.defaultMask =
479 (unsigned short) (~(sp->_mouse_gpm_connect.eventMask | GPM_HARD));
480 sp->_mouse_gpm_connect.minMod = 0;
481 sp->_mouse_gpm_connect.maxMod =
482 (unsigned short) (~((1 << KG_SHIFT) |
486 * Note: GPM hardcodes \E[?1001s and \E[?1000h during its open.
487 * The former is recognized by wscons (SunOS), and the latter by
488 * xterm. Those will not show up in ncurses' traces.
490 code = my_Gpm_Open(&sp->_mouse_gpm_connect, 0);
491 result = (code >= 0);
494 * GPM can return a -2 if it is trying to do something with xterm.
495 * Ignore that, since it conflicts with our use of stdin.
503 sp->_mouse_active = result;
504 T(("GPM open %s", result ? "succeeded" : "failed"));
506 if (!enable && sp->_mouse_active) {
507 /* GPM: close connection to gpm server */
509 sp->_mouse_active = FALSE;
516 unload_gpm_library(sp);
521 #endif /* USE_GPM_SUPPORT */
524 initialize_mousetype(SCREEN *sp)
526 T((T_CALLED("initialize_mousetype()")));
528 /* Try gpm first, because gpm may be configured to run in xterm */
530 if (allow_gpm_mouse()) {
531 if (!sp->_mouse_gpm_loaded) {
533 load_gpm_library(sp);
534 #else /* !HAVE_LIBDL */
535 sp->_mouse_gpm_found = TRUE;
536 sp->_mouse_gpm_loaded = TRUE;
541 * The gpm_fd file-descriptor may be negative (xterm). So we have to
542 * maintain our notion of whether the mouse connection is active
543 * without testing the file-descriptor.
545 if (sp->_mouse_gpm_found && enable_gpm_mouse(sp, TRUE)) {
546 sp->_mouse_type = M_GPM;
547 sp->_mouse_fd = *(my_gpm_fd);
548 T(("GPM mouse_fd %d", sp->_mouse_fd));
552 #endif /* USE_GPM_SUPPORT */
556 if (!sp->_emxmouse_thread
557 && strstr(TerminalOf(sp)->type.term_names, "xterm") == 0
561 if (pipe(handles) < 0) {
562 perror("mouse pipe error");
567 if (!sp->_emxmouse_buttons[0]) {
568 char *s = getenv("MOUSE_BUTTONS_123");
570 sp->_emxmouse_buttons[0] = 1;
571 if (s && strlen(s) >= 3) {
572 sp->_emxmouse_buttons[1] = s[0] - '0';
573 sp->_emxmouse_buttons[2] = s[1] - '0';
574 sp->_emxmouse_buttons[3] = s[2] - '0';
576 sp->_emxmouse_buttons[1] = 1;
577 sp->_emxmouse_buttons[2] = 3;
578 sp->_emxmouse_buttons[3] = 2;
581 sp->_emxmouse_wfd = handles[1];
582 M_FD(sp) = handles[0];
584 setmode(handles[0], O_BINARY);
585 setmode(handles[1], O_BINARY);
586 /* Do not use CRT functions, we may single-threaded. */
587 rc = DosCreateThread((unsigned long *) &sp->_emxmouse_thread,
588 mouse_server, (long) sp, 0, 8192);
590 printf("mouse thread error %d=%#x", rc, rc);
592 sp->_mouse_type = M_XTERM;
597 #endif /* USE_EMX_MOUSE */
601 struct mouse_info the_mouse;
602 char *the_device = 0;
604 if (isatty(sp->_ifd))
605 the_device = ttyname(sp->_ifd);
607 the_device = "/dev/tty";
609 sp->_mouse_fd = open(the_device, O_RDWR);
611 if (sp->_mouse_fd >= 0) {
613 * sysmouse does not have a usable user interface for obtaining
614 * mouse events. The logical way to proceed (reading data on a
615 * stream) only works if one opens the device as root. Even in
616 * that mode, careful examination shows we lose events
617 * occasionally. The interface provided for user programs is to
618 * establish a signal handler. really.
620 * Take over SIGUSR2 for this purpose since SIGUSR1 is more
621 * likely to be used by an application. getch() will have to
622 * handle the misleading EINTR's.
624 signal(SIGUSR2, SIG_IGN);
625 the_mouse.operation = MOUSE_MODE;
626 the_mouse.u.mode.mode = 0;
627 the_mouse.u.mode.signal = SIGUSR2;
628 if (ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse) != -1) {
629 signal(SIGUSR2, handle_sysmouse);
630 the_mouse.operation = MOUSE_SHOW;
631 ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse);
633 #if defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) /* FreeBSD > 2.x */
635 #ifndef FBIO_GETMODE /* FreeBSD 3.x */
636 #define FBIO_GETMODE CONS_GET
637 #define FBIO_MODEINFO CONS_MODEINFO
638 #endif /* FBIO_GETMODE */
639 video_info_t the_video;
641 if (ioctl(sp->_mouse_fd,
643 &the_video.vi_mode) != -1
644 && ioctl(sp->_mouse_fd,
647 sp->_sysmouse_char_width = the_video.vi_cwidth;
648 sp->_sysmouse_char_height = the_video.vi_cheight;
651 #endif /* defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) */
653 if (sp->_sysmouse_char_width <= 0)
654 sp->_sysmouse_char_width = 8;
655 if (sp->_sysmouse_char_height <= 0)
656 sp->_sysmouse_char_height = 16;
657 sp->_mouse_type = M_SYSMOUSE;
662 #endif /* USE_SYSMOUSE */
664 #ifdef USE_TERM_DRIVER
665 CallDriver(sp, initmouse);
667 /* we know how to recognize mouse events under "xterm" */
668 if (key_mouse != 0) {
669 if (!strcmp(key_mouse, xterm_kmous)
670 || strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
671 init_xterm_mouse(sp);
673 } else if (strstr(TerminalOf(sp)->type.term_names, "xterm") != 0) {
674 if (_nc_add_to_try(&(sp->_keytry), xterm_kmous, KEY_MOUSE) == OK)
675 init_xterm_mouse(sp);
683 _nc_mouse_init(SCREEN *sp)
684 /* initialize the mouse */
690 if (!sp->_mouse_initialized) {
691 sp->_mouse_initialized = TRUE;
693 TR(MY_TRACE, ("_nc_mouse_init() called"));
695 sp->_mouse_eventp = FirstEV(sp);
696 for (i = 0; i < EV_MAX; i++)
697 Invalidate(sp->_mouse_events + i);
699 initialize_mousetype(sp);
701 T(("_nc_mouse_init() set mousetype to %d", sp->_mouse_type));
703 result = sp->_mouse_initialized;
709 * Query to see if there is a pending mouse event. This is called from
710 * fifo_push() in lib_getch.c
713 _nc_mouse_event(SCREEN *sp)
715 MEVENT *eventp = sp->_mouse_eventp;
720 switch (sp->_mouse_type) {
722 /* xterm: never have to query, mouse events are in the keyboard stream */
727 int i, res = read(M_FD(sp), &kbuf, 3); /* Eat the prefix */
729 printf("Got %d chars instead of 3 for prefix.\n", res);
730 for (i = 0; i < res; i++) {
731 if (kbuf[i] != key_mouse[i])
732 printf("Got char %d instead of %d for prefix.\n",
733 (int) kbuf[i], (int) key_mouse[i]);
737 #endif /* USE_EMX_MOUSE */
742 if (sp->_mouse_fd >= 0) {
743 /* query server for event, return TRUE if we find one */
746 switch (my_Gpm_GetEvent(&ev)) {
748 /* Connection closed, drop the mouse. */
752 /* there's only one mouse... */
753 eventp->id = NORMAL_EVENT;
756 switch (ev.type & 0x0f) {
758 if (ev.buttons & GPM_B_LEFT)
759 eventp->bstate |= BUTTON1_PRESSED;
760 if (ev.buttons & GPM_B_MIDDLE)
761 eventp->bstate |= BUTTON2_PRESSED;
762 if (ev.buttons & GPM_B_RIGHT)
763 eventp->bstate |= BUTTON3_PRESSED;
766 if (ev.buttons & GPM_B_LEFT)
767 eventp->bstate |= BUTTON1_RELEASED;
768 if (ev.buttons & GPM_B_MIDDLE)
769 eventp->bstate |= BUTTON2_RELEASED;
770 if (ev.buttons & GPM_B_RIGHT)
771 eventp->bstate |= BUTTON3_RELEASED;
774 eventp->bstate |= REPORT_MOUSE_POSITION;
778 eventp->x = ev.x - 1;
779 eventp->y = ev.y - 1;
782 /* bump the next-free pointer into the circular list */
783 sp->_mouse_eventp = NEXT(eventp);
793 if (sp->_sysmouse_head < sp->_sysmouse_tail) {
794 *eventp = sp->_sysmouse_fifo[sp->_sysmouse_head];
797 * Point the fifo-head to the next possible location. If there
798 * are none, reset the indices. This may be interrupted by the
799 * signal handler, doing essentially the same reset.
801 sp->_sysmouse_head += 1;
802 if (sp->_sysmouse_head == sp->_sysmouse_tail) {
803 sp->_sysmouse_tail = 0;
804 sp->_sysmouse_head = 0;
807 /* bump the next-free pointer into the circular list */
808 sp->_mouse_eventp = eventp = NEXT(eventp);
812 #endif /* USE_SYSMOUSE */
814 #ifdef USE_TERM_DRIVER
816 while (sp->_drv_mouse_head < sp->_drv_mouse_tail) {
817 *eventp = sp->_drv_mouse_fifo[sp->_drv_mouse_head];
820 * Point the fifo-head to the next possible location. If there
821 * are none, reset the indices.
823 sp->_drv_mouse_head += 1;
824 if (sp->_drv_mouse_head == sp->_drv_mouse_tail) {
825 sp->_drv_mouse_tail = 0;
826 sp->_drv_mouse_head = 0;
829 /* bump the next-free pointer into the circular list */
830 sp->_mouse_eventp = eventp = NEXT(eventp);
840 return result; /* true if we found an event */
844 _nc_mouse_inline(SCREEN *sp)
845 /* mouse report received in the keyboard stream -- parse its info */
849 MEVENT *eventp = sp->_mouse_eventp;
851 TR(MY_TRACE, ("_nc_mouse_inline() called"));
853 if (sp->_mouse_type == M_XTERM) {
854 unsigned char kbuf[4];
858 /* This code requires that your xterm entry contain the kmous
859 * capability and that it be set to the \E[M documented in the
860 * Xterm Control Sequences reference. This is how we
861 * arrange for mouse events to be reported via a KEY_MOUSE
862 * return value from wgetch(). After this value is received,
863 * _nc_mouse_inline() gets called and is immediately
864 * responsible for parsing the mouse status information
865 * following the prefix.
867 * The following quotes from the ctrlseqs.ms document in the
868 * X distribution, describing the X mouse tracking feature:
870 * Parameters for all mouse tracking escape sequences
871 * generated by xterm encode numeric parameters in a single
872 * character as value+040. For example, ! is 1.
874 * On button press or release, xterm sends ESC [ M CbCxCy.
875 * The low two bits of Cb encode button information: 0=MB1
876 * pressed, 1=MB2 pressed, 2=MB3 pressed, 3=release. The
877 * upper bits encode what modifiers were down when the
878 * button was pressed and are added together. 4=Shift,
879 * 8=Meta, 16=Control. Cx and Cy are the x and y coordinates
880 * of the mouse event. The upper left corner is (1,1).
882 * (End quote) By the time we get here, we've eaten the
883 * key prefix. FYI, the loop below is necessary because
884 * mouse click info isn't guaranteed to present as a
887 * Wheel mice may return buttons 4 and 5 when the wheel is turned.
888 * We encode those as button presses.
890 # if USE_PTHREADS_EINTR
891 # if USE_WEAK_SYMBOLS
892 if ((pthread_self) && (pthread_kill) && (pthread_equal))
894 _nc_globals.read_thread = pthread_self();
896 for (grabbed = 0; grabbed < 3; grabbed += (size_t) res) {
898 /* For VIO mouse we add extra bit 64 to disambiguate button-up. */
900 res = (int) read(M_FD(sp) >= 0 ? M_FD(sp) : sp->_ifd, &kbuf, 3);
902 res = (int) read(sp->_ifd, kbuf + grabbed, 3 - grabbed);
907 #if USE_PTHREADS_EINTR
908 _nc_globals.read_thread = 0;
913 ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf));
915 /* there's only one mouse... */
916 eventp->id = NORMAL_EVENT;
918 /* processing code goes here */
922 #define PRESS_POSITION(n) \
924 eventp->bstate = MASK_PRESS(n); \
925 sp->_mouse_bstate |= MASK_PRESS(n); \
926 if (kbuf[0] & 0x40) { \
927 eventp->bstate = MASK_RELEASE(n); \
928 sp->_mouse_bstate &= ~MASK_PRESS(n); \
932 #define PRESS_POSITION(n) \
934 eventp->bstate = (mmask_t) (sp->_mouse_bstate & MASK_PRESS(n) \
935 ? REPORT_MOUSE_POSITION \
937 sp->_mouse_bstate |= MASK_PRESS(n); \
941 switch (kbuf[0] & 0x3) {
943 if ((kbuf[0] & 96) == 96) {
944 eventp->bstate = MASK_PRESS(4);
945 /* Do not record in sp->_mouse_bstate; there will be no
946 * corresponding release event.
954 if ((kbuf[0] & 96) == 96) {
955 #if NCURSES_MOUSE_VERSION == 2
956 eventp->bstate = MASK_PRESS(5);
957 /* See comment above for button 4 */
959 /* Ignore this event as it is not a true press of the button */
960 eventp->bstate = REPORT_MOUSE_POSITION;
973 * Release events aren't reported for individual buttons, just for
974 * the button set as a whole. However, because there are normally
975 * no mouse events under xterm that intervene between press and
976 * release, we can infer the button actually released by looking at
977 * the previous event.
979 if (sp->_mouse_bstate & BUTTON_PRESSED) {
980 eventp->bstate = BUTTON_RELEASED;
981 for (b = 1; b <= MAX_BUTTONS; ++b) {
982 if (!(sp->_mouse_bstate & MASK_PRESS(b)))
983 eventp->bstate &= ~MASK_RELEASE(b);
985 sp->_mouse_bstate = 0;
988 * XFree86 xterm will return a stream of release-events to
989 * let the application know where the mouse is going, if the
990 * private mode 1002 or 1003 is enabled.
992 eventp->bstate = REPORT_MOUSE_POSITION;
996 result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
999 eventp->bstate |= BUTTON_SHIFT;
1002 eventp->bstate |= BUTTON_ALT;
1005 eventp->bstate |= BUTTON_CTRL;
1008 eventp->x = (kbuf[1] - ' ') - 1;
1009 eventp->y = (kbuf[2] - ' ') - 1;
1011 ("_nc_mouse_inline: primitive mouse-event %s has slot %ld",
1012 _nc_tracemouse(sp, eventp),
1013 (long) IndexEV(sp, eventp)));
1015 /* bump the next-free pointer into the circular list */
1016 sp->_mouse_eventp = NEXT(eventp);
1017 #if 0 /* this return would be needed for QNX's mods to lib_getch.c */
1026 mouse_activate(SCREEN *sp, int on)
1028 if (!on && !sp->_mouse_initialized)
1031 if (!_nc_mouse_init(sp))
1035 sp->_mouse_bstate = 0;
1036 switch (sp->_mouse_type) {
1038 #if NCURSES_EXT_FUNCS
1039 NCURSES_SP_NAME(keyok) (NCURSES_SP_ARGx KEY_MOUSE, on);
1041 TPUTS_TRACE("xterm mouse initialization");
1042 enable_xterm_mouse(sp, 1);
1046 if (enable_gpm_mouse(sp, TRUE)) {
1047 sp->_mouse_fd = *(my_gpm_fd);
1048 T(("GPM mouse_fd %d", sp->_mouse_fd));
1054 signal(SIGUSR2, handle_sysmouse);
1055 sp->_mouse_active = TRUE;
1058 #ifdef USE_TERM_DRIVER
1060 sp->_mouse_active = TRUE;
1066 /* Make runtime binding to cut down on object size of applications that
1067 * do not use the mouse (e.g., 'clear').
1069 sp->_mouse_event = _nc_mouse_event;
1070 sp->_mouse_inline = _nc_mouse_inline;
1071 sp->_mouse_parse = _nc_mouse_parse;
1072 sp->_mouse_resume = _nc_mouse_resume;
1073 sp->_mouse_wrap = _nc_mouse_wrap;
1076 switch (sp->_mouse_type) {
1078 TPUTS_TRACE("xterm mouse deinitialization");
1079 enable_xterm_mouse(sp, 0);
1083 enable_gpm_mouse(sp, FALSE);
1088 signal(SIGUSR2, SIG_IGN);
1089 sp->_mouse_active = FALSE;
1092 #ifdef USE_TERM_DRIVER
1094 sp->_mouse_active = FALSE;
1101 NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
1104 /**************************************************************************
1106 * Device-independent code
1108 **************************************************************************/
1111 _nc_mouse_parse(SCREEN *sp, int runcount)
1112 /* parse a run of atomic mouse events into a gesture */
1114 MEVENT *eventp = sp->_mouse_eventp;
1116 MEVENT *first_valid = NULL;
1117 MEVENT *first_invalid = NULL;
1123 TR(MY_TRACE, ("_nc_mouse_parse(%d) called", runcount));
1126 * When we enter this routine, the event list next-free pointer
1127 * points just past a run of mouse events that we know were separated
1128 * in time by less than the critical click interval. The job of this
1129 * routine is to collapse this run into a single higher-level event
1132 * We accomplish this in two passes. The first pass merges press/release
1133 * pairs into click events. The second merges runs of click events into
1134 * double or triple-click events.
1136 * It's possible that the run may not resolve to a single event (for
1137 * example, if the user quadruple-clicks). If so, leading events
1138 * in the run are ignored if user does not call getmouse in a loop (getting
1139 * them from newest to older).
1141 * Note that this routine is independent of the format of the specific
1142 * format of the pointing-device's reports. We can use it to parse
1143 * gestures on anything that reports press/release events on a per-
1144 * button basis, as long as the device-dependent mouse code puts stuff
1145 * on the queue in MEVENT format.
1149 * Reset all events that were not set, in case the user sometimes calls
1150 * getmouse only once and other times until there are no more events in
1153 * This also allows reaching the beginning of the run.
1156 for (n = runcount; n < EV_MAX; n++) {
1162 if (USE_TRACEF(TRACE_IEVENT)) {
1163 _trace_slot(sp, "before mouse press/release merge:");
1164 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1165 RunParams(sp, eventp, ep),
1167 _nc_unlock_global(tracef);
1171 /* first pass; merge press/release pairs */
1175 if (next == eventp) {
1176 /* Will end the loop, but compact before */
1180 #define MASK_CHANGED(x) (!(ep->bstate & MASK_PRESS(x)) \
1181 == !(next->bstate & MASK_RELEASE(x)))
1183 if (ValidEvent(ep) && ValidEvent(next)
1184 && ep->x == next->x && ep->y == next->y
1185 && (ep->bstate & BUTTON_PRESSED)
1186 && (!(next->bstate & BUTTON_PRESSED))) {
1187 bool changed = TRUE;
1189 for (b = 1; b <= MAX_BUTTONS; ++b) {
1190 if (!MASK_CHANGED(b)) {
1198 for (b = 1; b <= MAX_BUTTONS; ++b) {
1199 if ((sp->_mouse_mask & MASK_CLICK(b))
1200 && (ep->bstate & MASK_PRESS(b))) {
1201 next->bstate &= ~MASK_RELEASE(b);
1202 next->bstate |= MASK_CLICK(b);
1213 /* Compact valid events */
1214 if (!ValidEvent(ep)) {
1215 if ((first_valid != NULL) && (first_invalid == NULL)) {
1219 if (first_valid == NULL) {
1221 } else if (first_invalid != NULL) {
1222 *first_invalid = *ep;
1224 first_invalid = NEXT(first_invalid);
1231 if (first_invalid != NULL) {
1232 eventp = first_invalid;
1235 if (USE_TRACEF(TRACE_IEVENT)) {
1236 _trace_slot(sp, "before mouse click merge:");
1237 if (first_valid == NULL) {
1238 _tracef("_nc_mouse_parse: no valid event");
1240 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1241 RunParams(sp, eventp, first_valid),
1243 _nc_unlock_global(tracef);
1249 * Second pass; merge click runs. We merge click events forward in the
1250 * queue. For example, double click can be changed to triple click.
1252 * NOTE: There is a problem with this design! If the application
1253 * allows enough click events to pile up in the circular queue so
1254 * they wrap around, it will cheerfully merge the newest forward
1255 * into the oldest, creating a bogus doubleclick and confusing
1256 * the queue-traversal logic rather badly. Generally this won't
1257 * happen, because calling getmouse() marks old events invalid and
1258 * ineligible for merges. The true solution to this problem would
1259 * be to timestamp each MEVENT and perform the obvious sanity check,
1260 * but the timer element would have to have sub-second resolution,
1261 * which would get us into portability trouble.
1263 first_invalid = NULL;
1264 endLoop = (first_valid == NULL);
1269 if (next == eventp) {
1270 /* Will end the loop, but check event type and compact before */
1272 } else if (!ValidEvent(next)) {
1275 /* merge click events forward */
1276 if ((ep->bstate & BUTTON_CLICKED)
1277 && (next->bstate & BUTTON_CLICKED)) {
1279 for (b = 1; b <= MAX_BUTTONS; ++b) {
1280 if ((sp->_mouse_mask & MASK_DOUBLE_CLICK(b))
1281 && (ep->bstate & MASK_CLICK(b))
1282 && (next->bstate & MASK_CLICK(b))) {
1283 next->bstate &= ~MASK_CLICK(b);
1284 next->bstate |= MASK_DOUBLE_CLICK(b);
1293 /* merge double-click events forward */
1294 if ((ep->bstate & BUTTON_DOUBLE_CLICKED)
1295 && (next->bstate & BUTTON_CLICKED)) {
1297 for (b = 1; b <= MAX_BUTTONS; ++b) {
1298 if ((sp->_mouse_mask & MASK_TRIPLE_CLICK(b))
1299 && (ep->bstate & MASK_DOUBLE_CLICK(b))
1300 && (next->bstate & MASK_CLICK(b))) {
1301 next->bstate &= ~MASK_CLICK(b);
1302 next->bstate |= MASK_TRIPLE_CLICK(b);
1312 /* Discard event if it does not match event mask */
1313 if (!(ep->bstate & sp->_mouse_mask2)) {
1317 /* Compact valid events */
1318 if (!ValidEvent(ep)) {
1319 if (ep == first_valid) {
1321 } else if (first_invalid == NULL) {
1324 } else if (first_invalid != NULL) {
1325 *first_invalid = *ep;
1327 first_invalid = NEXT(first_invalid);
1333 if (first_invalid == NULL) {
1334 first_invalid = eventp;
1336 sp->_mouse_eventp = first_invalid;
1339 if (first_valid != NULL) {
1340 if (USE_TRACEF(TRACE_IEVENT)) {
1341 _trace_slot(sp, "after mouse event queue compaction:");
1342 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1343 RunParams(sp, first_invalid, first_valid),
1345 _nc_unlock_global(tracef);
1347 for (ep = first_valid; ep != first_invalid; ep = NEXT(ep)) {
1350 ("_nc_mouse_parse: returning composite mouse event %s at slot %ld",
1351 _nc_tracemouse(sp, ep),
1352 (long) IndexEV(sp, ep)));
1357 /* after all this, do we have a valid event? */
1358 return ValidEvent(PREV(first_invalid));
1362 _nc_mouse_wrap(SCREEN *sp)
1363 /* release mouse -- called by endwin() before shellout/exit */
1365 TR(MY_TRACE, ("_nc_mouse_wrap() called"));
1367 switch (sp->_mouse_type) {
1369 if (sp->_mouse_mask)
1370 mouse_activate(sp, FALSE);
1373 /* GPM: pass all mouse events to next client */
1375 if (sp->_mouse_mask)
1376 mouse_activate(sp, FALSE);
1381 mouse_activate(sp, FALSE);
1384 #ifdef USE_TERM_DRIVER
1386 mouse_activate(sp, FALSE);
1395 _nc_mouse_resume(SCREEN *sp)
1396 /* re-connect to mouse -- called by doupdate() after shellout */
1398 TR(MY_TRACE, ("_nc_mouse_resume() called"));
1400 switch (sp->_mouse_type) {
1402 /* xterm: re-enable reporting */
1403 if (sp->_mouse_mask)
1404 mouse_activate(sp, TRUE);
1409 /* GPM: reclaim our event set */
1410 if (sp->_mouse_mask)
1411 mouse_activate(sp, TRUE);
1417 mouse_activate(sp, TRUE);
1421 #ifdef USE_TERM_DRIVER
1423 mouse_activate(sp, TRUE);
1432 /**************************************************************************
1434 * Mouse interface entry points for the API
1436 **************************************************************************/
1439 NCURSES_SP_NAME(getmouse) (NCURSES_SP_DCLx MEVENT * aevent)
1443 T((T_CALLED("getmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent));
1445 if ((aevent != 0) && (SP_PARM != 0) && (SP_PARM->_mouse_type != M_NONE)) {
1446 MEVENT *eventp = SP_PARM->_mouse_eventp;
1447 /* compute the current-event pointer */
1448 MEVENT *prev = PREV(eventp);
1451 * Discard events not matching mask (there could be still some if
1452 * _nc_mouse_parse was not called, e.g., when _nc_mouse_inline returns
1455 while (ValidEvent(prev) && (!(prev->bstate & SP_PARM->_mouse_mask2))) {
1459 if (ValidEvent(prev)) {
1460 /* copy the event we find there */
1463 TR(TRACE_IEVENT, ("getmouse: returning event %s from slot %ld",
1464 _nc_tracemouse(SP_PARM, prev),
1465 (long) IndexEV(SP_PARM, prev)));
1467 Invalidate(prev); /* so the queue slot becomes free */
1468 SP_PARM->_mouse_eventp = prev;
1471 /* Reset the provided event */
1482 #if NCURSES_SP_FUNCS
1483 /* grab a copy of the current mouse event */
1485 getmouse(MEVENT * aevent)
1487 return NCURSES_SP_NAME(getmouse) (CURRENT_SCREEN, aevent);
1492 NCURSES_SP_NAME(ungetmouse) (NCURSES_SP_DCLx MEVENT * aevent)
1496 T((T_CALLED("ungetmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent));
1498 if (aevent != 0 && SP_PARM != 0) {
1499 MEVENT *eventp = SP_PARM->_mouse_eventp;
1501 /* stick the given event in the next-free slot */
1504 /* bump the next-free pointer into the circular list */
1505 SP_PARM->_mouse_eventp = NEXT(eventp);
1507 /* push back the notification event on the keyboard queue */
1508 result = NCURSES_SP_NAME(ungetch) (NCURSES_SP_ARGx KEY_MOUSE);
1513 #if NCURSES_SP_FUNCS
1514 /* enqueue a synthesized mouse event to be seen by the next wgetch() */
1516 ungetmouse(MEVENT * aevent)
1518 return NCURSES_SP_NAME(ungetmouse) (CURRENT_SCREEN, aevent);
1522 NCURSES_EXPORT(mmask_t)
1523 NCURSES_SP_NAME(mousemask) (NCURSES_SP_DCLx mmask_t newmask, mmask_t * oldmask)
1524 /* set the mouse event mask */
1529 T((T_CALLED("mousemask(%p,%#lx,%p)"),
1531 (unsigned long) newmask,
1536 *oldmask = SP_PARM->_mouse_mask;
1538 if (newmask || SP_PARM->_mouse_initialized) {
1539 _nc_mouse_init(SP_PARM);
1540 if (SP_PARM->_mouse_type != M_NONE) {
1542 (REPORT_MOUSE_POSITION
1549 | BUTTON_DOUBLE_CLICKED
1550 | BUTTON_TRIPLE_CLICKED);
1552 mouse_activate(SP_PARM, (bool) (result != 0));
1554 SP_PARM->_mouse_mask = result;
1555 SP_PARM->_mouse_mask2 = result;
1558 * Make a mask corresponding to the states we will need to
1559 * retain (temporarily) while building up the state that the
1562 for (b = 1; b <= MAX_BUTTONS; ++b) {
1563 if (SP_PARM->_mouse_mask2 & MASK_TRIPLE_CLICK(b))
1564 SP_PARM->_mouse_mask2 |= MASK_DOUBLE_CLICK(b);
1565 if (SP_PARM->_mouse_mask2 & MASK_DOUBLE_CLICK(b))
1566 SP_PARM->_mouse_mask2 |= MASK_CLICK(b);
1567 if (SP_PARM->_mouse_mask2 & MASK_CLICK(b))
1568 SP_PARM->_mouse_mask2 |= (MASK_PRESS(b) |
1574 returnMMask(result);
1577 #if NCURSES_SP_FUNCS
1578 NCURSES_EXPORT(mmask_t)
1579 mousemask(mmask_t newmask, mmask_t * oldmask)
1581 return NCURSES_SP_NAME(mousemask) (CURRENT_SCREEN, newmask, oldmask);
1585 NCURSES_EXPORT(bool)
1586 wenclose(const WINDOW *win, int y, int x)
1587 /* check to see if given window encloses given screen location */
1589 bool result = FALSE;
1591 T((T_CALLED("wenclose(%p,%d,%d)"), (const void *) win, y, x));
1595 result = ((win->_begy <= y &&
1597 (win->_begx + win->_maxx) >= x &&
1598 (win->_begy + win->_maxy) >= y) ? TRUE : FALSE);
1604 NCURSES_SP_NAME(mouseinterval) (NCURSES_SP_DCLx int maxclick)
1605 /* set the maximum mouse interval within which to recognize a click */
1609 T((T_CALLED("mouseinterval(%p,%d)"), (void *) SP_PARM, maxclick));
1612 oldval = SP_PARM->_maxclick;
1614 SP_PARM->_maxclick = maxclick;
1616 oldval = DEFAULT_MAXCLICK;
1622 #if NCURSES_SP_FUNCS
1624 mouseinterval(int maxclick)
1626 return NCURSES_SP_NAME(mouseinterval) (CURRENT_SCREEN, maxclick);
1630 /* This may be used by other routines to ask for the existence of mouse
1632 NCURSES_EXPORT(bool)
1633 _nc_has_mouse(SCREEN *sp)
1635 return (((0 == sp) || (sp->_mouse_type == M_NONE)) ? FALSE : TRUE);
1638 NCURSES_EXPORT(bool)
1639 NCURSES_SP_NAME(has_mouse) (NCURSES_SP_DCL0)
1641 return _nc_has_mouse(SP_PARM);
1644 #if NCURSES_SP_FUNCS
1645 NCURSES_EXPORT(bool)
1648 return _nc_has_mouse(CURRENT_SCREEN);
1652 NCURSES_EXPORT(bool)
1653 wmouse_trafo(const WINDOW *win, int *pY, int *pX, bool to_screen)
1655 bool result = FALSE;
1657 T((T_CALLED("wmouse_trafo(%p,%p,%p,%d)"),
1663 if (win && pY && pX) {
1668 y += win->_begy + win->_yoffset;
1670 if (wenclose(win, y, x))
1673 if (wenclose(win, y, x)) {
1674 y -= (win->_begy + win->_yoffset);