1 /****************************************************************************
2 * Copyright (c) 1998-2010,2011 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 1.121 2011/01/22 19:47:47 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 */
123 #define MY_TRACE TRACE_ICALLS|TRACE_IEVENT
125 #define MASK_RELEASE(x) (mmask_t) NCURSES_MOUSE_MASK(x, 001)
126 #define MASK_PRESS(x) (mmask_t) NCURSES_MOUSE_MASK(x, 002)
127 #define MASK_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 004)
128 #define MASK_DOUBLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 010)
129 #define MASK_TRIPLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 020)
130 #define MASK_RESERVED_EVENT(x) (mmask_t) NCURSES_MOUSE_MASK(x, 040)
132 #if NCURSES_MOUSE_VERSION == 1
133 #define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED)
134 #define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED)
135 #define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED)
136 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED)
137 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED)
138 #define MAX_BUTTONS 4
140 #define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED | BUTTON5_CLICKED)
141 #define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED | BUTTON5_PRESSED)
142 #define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED | BUTTON5_RELEASED)
143 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED | BUTTON5_DOUBLE_CLICKED)
144 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED | BUTTON5_TRIPLE_CLICKED)
145 #define MAX_BUTTONS 5
148 #define INVALID_EVENT -1
149 #define NORMAL_EVENT 0
153 #ifndef LIBGPM_SONAME
154 #define LIBGPM_SONAME "libgpm.so"
157 #define GET_DLSYM(name) (my_##name = (TYPE_##name) dlsym(sp->_dlopen_gpm, #name))
159 #endif /* USE_GPM_SUPPORT */
161 static bool _nc_mouse_parse(SCREEN
*, int);
162 static void _nc_mouse_resume(SCREEN
*);
163 static void _nc_mouse_wrap(SCREEN
*);
165 /* maintain a circular list of mouse events */
167 #define FirstEV(sp) ((sp)->_mouse_events)
168 #define LastEV(sp) ((sp)->_mouse_events + EV_MAX - 1)
171 #define NEXT(ep) ((ep >= LastEV(SP_PARM)) \
176 #define PREV(ep) ((ep <= FirstEV(SP_PARM)) \
180 #define IndexEV(sp, ep) (ep - FirstEV(sp))
182 #define RunParams(sp, eventp, runp) \
183 (long) IndexEV(sp, runp), \
184 (long) (IndexEV(sp, eventp) + (EV_MAX - 1)) % EV_MAX
188 _trace_slot(SCREEN
*sp
, const char *tag
)
194 for (ep
= FirstEV(sp
); ep
<= LastEV(sp
); ep
++)
195 _tracef("mouse event queue slot %ld = %s",
196 (long) IndexEV(sp
, ep
),
197 _nc_tracemouse(sp
, ep
));
206 # define M_FD(sp) sp->_mouse_fd
209 write_event(SCREEN
*sp
, int down
, int button
, int x
, int y
)
212 unsigned long ignore
;
214 strncpy(buf
, key_mouse
, 3); /* should be "\033[M" */
215 buf
[3] = ' ' + (button
- 1) + (down
? 0 : 0x40);
216 buf
[4] = ' ' + x
- LEFT_COL
+ 1;
217 buf
[5] = ' ' + y
- TOP_ROW
+ 1;
218 DosWrite(sp
->_emxmouse_wfd
, buf
, 6, &ignore
);
222 mouse_server(unsigned long param
)
224 SCREEN
*sp
= (SCREEN
*) param
;
225 unsigned short fWait
= MOU_WAIT
;
226 /* NOPTRRECT mourt = { 0,0,24,79 }; */
229 unsigned short mask
= MOUSE_BN1_DOWN
| MOUSE_BN2_DOWN
| MOUSE_BN3_DOWN
;
235 /* open the handle for the mouse */
236 if (MouOpen(NULL
, &hmou
) == 0) {
237 rc
= MouSetEventMask(&mask
, hmou
);
238 if (rc
) { /* retry with 2 buttons */
239 mask
= MOUSE_BN1_DOWN
| MOUSE_BN2_DOWN
;
240 rc
= MouSetEventMask(&mask
, hmou
);
243 if (rc
== 0 && MouDrawPtr(hmou
) == 0) {
245 /* sit and wait on the event queue */
246 rc
= MouReadEventQue(&mouev
, &fWait
, hmou
);
248 sprintf(err
, "Error reading mouse queue, rc=%lu.\r\n", rc
);
251 if (!sp
->_emxmouse_activated
)
255 * OS/2 numbers a 3-button mouse inconsistently from other
261 if ((mouev
.fs
^ oldstate
) & MOUSE_BN1_DOWN
)
262 write_event(sp
, mouev
.fs
& MOUSE_BN1_DOWN
,
263 sp
->_emxmouse_buttons
[1], mouev
.col
, mouev
.row
);
264 if ((mouev
.fs
^ oldstate
) & MOUSE_BN2_DOWN
)
265 write_event(sp
, mouev
.fs
& MOUSE_BN2_DOWN
,
266 sp
->_emxmouse_buttons
[3], mouev
.col
, mouev
.row
);
267 if ((mouev
.fs
^ oldstate
) & MOUSE_BN3_DOWN
)
268 write_event(sp
, mouev
.fs
& MOUSE_BN3_DOWN
,
269 sp
->_emxmouse_buttons
[2], mouev
.col
, mouev
.row
);
275 sprintf(err
, "Error setting event mask, buttons=%d, rc=%lu.\r\n",
278 DosWrite(2, err
, strlen(err
), &rc
);
281 DosExit(EXIT_THREAD
, 0L);
284 #endif /* USE_EMX_MOUSE */
288 sysmouse_server(SCREEN
*sp
)
290 struct mouse_info the_mouse
;
293 the_mouse
.operation
= MOUSE_GETINFO
;
295 && sp
->_mouse_fd
>= 0
296 && sp
->_sysmouse_tail
< FIFO_SIZE
297 && ioctl(sp
->_mouse_fd
, CONS_MOUSECTL
, &the_mouse
) != -1) {
299 if (sp
->_sysmouse_head
> sp
->_sysmouse_tail
) {
300 sp
->_sysmouse_tail
= 0;
301 sp
->_sysmouse_head
= 0;
303 work
= &(sp
->_sysmouse_fifo
[sp
->_sysmouse_tail
]);
304 memset(work
, 0, sizeof(*work
));
305 work
->id
= NORMAL_EVENT
; /* there's only one mouse... */
307 sp
->_sysmouse_old_buttons
= sp
->_sysmouse_new_buttons
;
308 sp
->_sysmouse_new_buttons
= the_mouse
.u
.data
.buttons
& 0x7;
310 if (sp
->_sysmouse_new_buttons
) {
311 if (sp
->_sysmouse_new_buttons
& 1)
312 work
->bstate
|= BUTTON1_PRESSED
;
313 if (sp
->_sysmouse_new_buttons
& 2)
314 work
->bstate
|= BUTTON2_PRESSED
;
315 if (sp
->_sysmouse_new_buttons
& 4)
316 work
->bstate
|= BUTTON3_PRESSED
;
318 if (sp
->_sysmouse_old_buttons
& 1)
319 work
->bstate
|= BUTTON1_RELEASED
;
320 if (sp
->_sysmouse_old_buttons
& 2)
321 work
->bstate
|= BUTTON2_RELEASED
;
322 if (sp
->_sysmouse_old_buttons
& 4)
323 work
->bstate
|= BUTTON3_RELEASED
;
326 /* for cosmetic bug in syscons.c on FreeBSD 3.[34] */
327 the_mouse
.operation
= MOUSE_HIDE
;
328 ioctl(sp
->_mouse_fd
, CONS_MOUSECTL
, &the_mouse
);
329 the_mouse
.operation
= MOUSE_SHOW
;
330 ioctl(sp
->_mouse_fd
, CONS_MOUSECTL
, &the_mouse
);
333 * We're only interested if the button is pressed or released.
334 * FIXME: implement continuous event-tracking.
336 if (sp
->_sysmouse_new_buttons
!= sp
->_sysmouse_old_buttons
) {
337 sp
->_sysmouse_tail
+= 1;
339 work
->x
= the_mouse
.u
.data
.x
/ sp
->_sysmouse_char_width
;
340 work
->y
= the_mouse
.u
.data
.y
/ sp
->_sysmouse_char_height
;
345 handle_sysmouse(int sig GCC_UNUSED
)
347 sysmouse_server(CURRENT_SCREEN
);
349 #endif /* USE_SYSMOUSE */
351 #ifndef USE_TERM_DRIVER
352 #define xterm_kmous "\033[M"
355 init_xterm_mouse(SCREEN
*sp
)
357 sp
->_mouse_type
= M_XTERM
;
358 sp
->_mouse_xtermcap
= tigetstr("XM");
359 if (!VALID_STRING(sp
->_mouse_xtermcap
))
360 sp
->_mouse_xtermcap
= "\033[?1000%?%p1%{1}%=%th%el%;";
365 enable_xterm_mouse(SCREEN
*sp
, int enable
)
368 sp
->_emxmouse_activated
= enable
;
370 NCURSES_SP_NAME(_nc_putp
) (NCURSES_SP_ARGx
372 TPARM_1(sp
->_mouse_xtermcap
, enable
));
374 sp
->_mouse_active
= enable
;
379 allow_gpm_mouse(void)
383 /* GPM does printf's without checking if stdout is a terminal */
384 if (isatty(fileno(stdout
))) {
385 char *list
= getenv("NCURSES_GPM_TERMS");
386 char *env
= getenv("TERM");
389 result
= _nc_name_match(list
, env
, "|:");
392 /* GPM checks the beginning of the $TERM variable to decide if it
393 * should pass xterm events through. There is no real advantage in
394 * allowing GPM to do this. Recent versions relax that check, and
395 * pretend that GPM can work with any terminal having the kmous
396 * capability. Perhaps that works for someone. If so, they can
397 * set the environment variable (above).
399 if (env
!= 0 && strstr(env
, "linux") != 0) {
409 unload_gpm_library(SCREEN
*sp
)
411 if (sp
->_dlopen_gpm
!= 0) {
412 T(("unload GPM library"));
413 sp
->_mouse_gpm_loaded
= FALSE
;
415 dlclose(sp
->_dlopen_gpm
);
421 load_gpm_library(SCREEN
*sp
)
423 sp
->_mouse_gpm_found
= FALSE
;
424 if ((sp
->_dlopen_gpm
= dlopen(LIBGPM_SONAME
, my_RTLD
)) != 0) {
425 if (GET_DLSYM(gpm_fd
) == 0 ||
426 GET_DLSYM(Gpm_Open
) == 0 ||
427 GET_DLSYM(Gpm_Close
) == 0 ||
428 GET_DLSYM(Gpm_GetEvent
) == 0) {
429 T(("GPM initialization failed: %s", dlerror()));
430 unload_gpm_library(sp
);
432 sp
->_mouse_gpm_found
= TRUE
;
433 sp
->_mouse_gpm_loaded
= TRUE
;
440 enable_gpm_mouse(SCREEN
*sp
, bool enable
)
444 T((T_CALLED("enable_gpm_mouse(%d)"), enable
));
446 if (enable
&& !sp
->_mouse_active
) {
448 if (sp
->_mouse_gpm_found
&& !sp
->_mouse_gpm_loaded
) {
449 load_gpm_library(sp
);
452 if (sp
->_mouse_gpm_loaded
) {
455 /* GPM: initialize connection to gpm server */
456 sp
->_mouse_gpm_connect
.eventMask
= GPM_DOWN
| GPM_UP
;
457 sp
->_mouse_gpm_connect
.defaultMask
=
458 (unsigned short) (~(sp
->_mouse_gpm_connect
.eventMask
| GPM_HARD
));
459 sp
->_mouse_gpm_connect
.minMod
= 0;
460 sp
->_mouse_gpm_connect
.maxMod
=
461 (unsigned short) (~((1 << KG_SHIFT
) |
465 * Note: GPM hardcodes \E[?1001s and \E[?1000h during its open.
466 * The former is recognized by wscons (SunOS), and the latter by
467 * xterm. Those will not show up in ncurses' traces.
469 code
= my_Gpm_Open(&sp
->_mouse_gpm_connect
, 0);
470 result
= (code
>= 0);
473 * GPM can return a -2 if it is trying to do something with xterm.
474 * Ignore that, since it conflicts with our use of stdin.
482 sp
->_mouse_active
= result
;
483 T(("GPM open %s", result
? "succeeded" : "failed"));
485 if (!enable
&& sp
->_mouse_active
) {
486 /* GPM: close connection to gpm server */
488 sp
->_mouse_active
= FALSE
;
495 unload_gpm_library(sp
);
500 #endif /* USE_GPM_SUPPORT */
503 initialize_mousetype(SCREEN
*sp
)
505 T((T_CALLED("initialize_mousetype()")));
507 /* Try gpm first, because gpm may be configured to run in xterm */
509 if (allow_gpm_mouse()) {
510 if (!sp
->_mouse_gpm_loaded
) {
512 load_gpm_library(sp
);
513 #else /* !HAVE_LIBDL */
514 sp
->_mouse_gpm_found
= TRUE
;
515 sp
->_mouse_gpm_loaded
= TRUE
;
520 * The gpm_fd file-descriptor may be negative (xterm). So we have to
521 * maintain our notion of whether the mouse connection is active
522 * without testing the file-descriptor.
524 if (sp
->_mouse_gpm_found
&& enable_gpm_mouse(sp
, TRUE
)) {
525 sp
->_mouse_type
= M_GPM
;
526 sp
->_mouse_fd
= *(my_gpm_fd
);
527 T(("GPM mouse_fd %d", sp
->_mouse_fd
));
531 #endif /* USE_GPM_SUPPORT */
535 if (!sp
->_emxmouse_thread
536 && strstr(TerminalOf(sp
)->type
.term_names
, "xterm") == 0
540 if (pipe(handles
) < 0) {
541 perror("mouse pipe error");
546 if (!sp
->_emxmouse_buttons
[0]) {
547 char *s
= getenv("MOUSE_BUTTONS_123");
549 sp
->_emxmouse_buttons
[0] = 1;
550 if (s
&& strlen(s
) >= 3) {
551 sp
->_emxmouse_buttons
[1] = s
[0] - '0';
552 sp
->_emxmouse_buttons
[2] = s
[1] - '0';
553 sp
->_emxmouse_buttons
[3] = s
[2] - '0';
555 sp
->_emxmouse_buttons
[1] = 1;
556 sp
->_emxmouse_buttons
[2] = 3;
557 sp
->_emxmouse_buttons
[3] = 2;
560 sp
->_emxmouse_wfd
= handles
[1];
561 M_FD(sp
) = handles
[0];
563 setmode(handles
[0], O_BINARY
);
564 setmode(handles
[1], O_BINARY
);
565 /* Do not use CRT functions, we may single-threaded. */
566 rc
= DosCreateThread((unsigned long *) &sp
->_emxmouse_thread
,
567 mouse_server
, (long) sp
, 0, 8192);
569 printf("mouse thread error %d=%#x", rc
, rc
);
571 sp
->_mouse_type
= M_XTERM
;
576 #endif /* USE_EMX_MOUSE */
580 struct mouse_info the_mouse
;
581 char *the_device
= 0;
583 if (isatty(sp
->_ifd
))
584 the_device
= ttyname(sp
->_ifd
);
586 the_device
= "/dev/tty";
588 sp
->_mouse_fd
= open(the_device
, O_RDWR
);
590 if (sp
->_mouse_fd
>= 0) {
592 * sysmouse does not have a usable user interface for obtaining
593 * mouse events. The logical way to proceed (reading data on a
594 * stream) only works if one opens the device as root. Even in
595 * that mode, careful examination shows we lose events
596 * occasionally. The interface provided for user programs is to
597 * establish a signal handler. really.
599 * Take over SIGUSR2 for this purpose since SIGUSR1 is more
600 * likely to be used by an application. getch() will have to
601 * handle the misleading EINTR's.
603 signal(SIGUSR2
, SIG_IGN
);
604 the_mouse
.operation
= MOUSE_MODE
;
605 the_mouse
.u
.mode
.mode
= 0;
606 the_mouse
.u
.mode
.signal
= SIGUSR2
;
607 if (ioctl(sp
->_mouse_fd
, CONS_MOUSECTL
, &the_mouse
) != -1) {
608 signal(SIGUSR2
, handle_sysmouse
);
609 the_mouse
.operation
= MOUSE_SHOW
;
610 ioctl(sp
->_mouse_fd
, CONS_MOUSECTL
, &the_mouse
);
612 #if defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) /* FreeBSD > 2.x */
614 #ifndef FBIO_GETMODE /* FreeBSD 3.x */
615 #define FBIO_GETMODE CONS_GET
616 #define FBIO_MODEINFO CONS_MODEINFO
617 #endif /* FBIO_GETMODE */
618 video_info_t the_video
;
620 if (ioctl(sp
->_mouse_fd
,
622 &the_video
.vi_mode
) != -1
623 && ioctl(sp
->_mouse_fd
,
626 sp
->_sysmouse_char_width
= the_video
.vi_cwidth
;
627 sp
->_sysmouse_char_height
= the_video
.vi_cheight
;
630 #endif /* defined(FBIO_MODEINFO) || defined(CONS_MODEINFO) */
632 if (sp
->_sysmouse_char_width
<= 0)
633 sp
->_sysmouse_char_width
= 8;
634 if (sp
->_sysmouse_char_height
<= 0)
635 sp
->_sysmouse_char_height
= 16;
636 sp
->_mouse_type
= M_SYSMOUSE
;
641 #endif /* USE_SYSMOUSE */
643 #ifdef USE_TERM_DRIVER
644 CallDriver(sp
, initmouse
);
646 /* we know how to recognize mouse events under "xterm" */
647 if (key_mouse
!= 0) {
648 if (!strcmp(key_mouse
, xterm_kmous
)
649 || strstr(TerminalOf(sp
)->type
.term_names
, "xterm") != 0) {
650 init_xterm_mouse(sp
);
652 } else if (strstr(TerminalOf(sp
)->type
.term_names
, "xterm") != 0) {
653 if (_nc_add_to_try(&(sp
->_keytry
), xterm_kmous
, KEY_MOUSE
) == OK
)
654 init_xterm_mouse(sp
);
662 _nc_mouse_init(SCREEN
*sp
)
663 /* initialize the mouse */
669 if (!sp
->_mouse_initialized
) {
670 sp
->_mouse_initialized
= TRUE
;
672 TR(MY_TRACE
, ("_nc_mouse_init() called"));
674 sp
->_mouse_eventp
= FirstEV(sp
);
675 for (i
= 0; i
< EV_MAX
; i
++)
676 sp
->_mouse_events
[i
].id
= INVALID_EVENT
;
678 initialize_mousetype(sp
);
680 T(("_nc_mouse_init() set mousetype to %d", sp
->_mouse_type
));
682 result
= sp
->_mouse_initialized
;
688 * Query to see if there is a pending mouse event. This is called from
689 * fifo_push() in lib_getch.c
692 _nc_mouse_event(SCREEN
*sp
)
694 MEVENT
*eventp
= sp
->_mouse_eventp
;
699 switch (sp
->_mouse_type
) {
701 /* xterm: never have to query, mouse events are in the keyboard stream */
706 int i
, res
= read(M_FD(sp
), &kbuf
, 3); /* Eat the prefix */
708 printf("Got %d chars instead of 3 for prefix.\n", res
);
709 for (i
= 0; i
< res
; i
++) {
710 if (kbuf
[i
] != key_mouse
[i
])
711 printf("Got char %d instead of %d for prefix.\n",
712 (int) kbuf
[i
], (int) key_mouse
[i
]);
716 #endif /* USE_EMX_MOUSE */
721 if (sp
->_mouse_fd
>= 0) {
722 /* query server for event, return TRUE if we find one */
725 switch (my_Gpm_GetEvent(&ev
)) {
727 /* Connection closed, drop the mouse. */
731 /* there's only one mouse... */
732 eventp
->id
= NORMAL_EVENT
;
735 switch (ev
.type
& 0x0f) {
737 if (ev
.buttons
& GPM_B_LEFT
)
738 eventp
->bstate
|= BUTTON1_PRESSED
;
739 if (ev
.buttons
& GPM_B_MIDDLE
)
740 eventp
->bstate
|= BUTTON2_PRESSED
;
741 if (ev
.buttons
& GPM_B_RIGHT
)
742 eventp
->bstate
|= BUTTON3_PRESSED
;
745 if (ev
.buttons
& GPM_B_LEFT
)
746 eventp
->bstate
|= BUTTON1_RELEASED
;
747 if (ev
.buttons
& GPM_B_MIDDLE
)
748 eventp
->bstate
|= BUTTON2_RELEASED
;
749 if (ev
.buttons
& GPM_B_RIGHT
)
750 eventp
->bstate
|= BUTTON3_RELEASED
;
756 eventp
->x
= ev
.x
- 1;
757 eventp
->y
= ev
.y
- 1;
760 /* bump the next-free pointer into the circular list */
761 sp
->_mouse_eventp
= NEXT(eventp
);
771 if (sp
->_sysmouse_head
< sp
->_sysmouse_tail
) {
772 *eventp
= sp
->_sysmouse_fifo
[sp
->_sysmouse_head
];
775 * Point the fifo-head to the next possible location. If there
776 * are none, reset the indices. This may be interrupted by the
777 * signal handler, doing essentially the same reset.
779 sp
->_sysmouse_head
+= 1;
780 if (sp
->_sysmouse_head
== sp
->_sysmouse_tail
) {
781 sp
->_sysmouse_tail
= 0;
782 sp
->_sysmouse_head
= 0;
785 /* bump the next-free pointer into the circular list */
786 sp
->_mouse_eventp
= eventp
= NEXT(eventp
);
790 #endif /* USE_SYSMOUSE */
792 #ifdef USE_TERM_DRIVER
794 while (sp
->_drv_mouse_head
< sp
->_drv_mouse_tail
) {
795 *eventp
= sp
->_drv_mouse_fifo
[sp
->_drv_mouse_head
];
798 * Point the fifo-head to the next possible location. If there
799 * are none, reset the indices.
801 sp
->_drv_mouse_head
+= 1;
802 if (sp
->_drv_mouse_head
== sp
->_drv_mouse_tail
) {
803 sp
->_drv_mouse_tail
= 0;
804 sp
->_drv_mouse_head
= 0;
807 /* bump the next-free pointer into the circular list */
808 sp
->_mouse_eventp
= eventp
= NEXT(eventp
);
818 return result
; /* true if we found an event */
822 _nc_mouse_inline(SCREEN
*sp
)
823 /* mouse report received in the keyboard stream -- parse its info */
827 MEVENT
*eventp
= sp
->_mouse_eventp
;
829 TR(MY_TRACE
, ("_nc_mouse_inline() called"));
831 if (sp
->_mouse_type
== M_XTERM
) {
832 unsigned char kbuf
[4];
837 /* This code requires that your xterm entry contain the kmous
838 * capability and that it be set to the \E[M documented in the
839 * Xterm Control Sequences reference. This is how we
840 * arrange for mouse events to be reported via a KEY_MOUSE
841 * return value from wgetch(). After this value is received,
842 * _nc_mouse_inline() gets called and is immediately
843 * responsible for parsing the mouse status information
844 * following the prefix.
846 * The following quotes from the ctrlseqs.ms document in the
847 * X distribution, describing the X mouse tracking feature:
849 * Parameters for all mouse tracking escape sequences
850 * generated by xterm encode numeric parameters in a single
851 * character as value+040. For example, ! is 1.
853 * On button press or release, xterm sends ESC [ M CbCxCy.
854 * The low two bits of Cb encode button information: 0=MB1
855 * pressed, 1=MB2 pressed, 2=MB3 pressed, 3=release. The
856 * upper bits encode what modifiers were down when the
857 * button was pressed and are added together. 4=Shift,
858 * 8=Meta, 16=Control. Cx and Cy are the x and y coordinates
859 * of the mouse event. The upper left corner is (1,1).
861 * (End quote) By the time we get here, we've eaten the
862 * key prefix. FYI, the loop below is necessary because
863 * mouse click info isn't guaranteed to present as a
866 * Wheel mice may return buttons 4 and 5 when the wheel is turned.
867 * We encode those as button presses.
869 # if USE_PTHREADS_EINTR
870 # if USE_WEAK_SYMBOLS
871 if ((pthread_self
) && (pthread_kill
) && (pthread_equal
))
873 _nc_globals
.read_thread
= pthread_self();
875 for (grabbed
= 0; grabbed
< 3; grabbed
+= (size_t) res
) {
877 /* For VIO mouse we add extra bit 64 to disambiguate button-up. */
879 res
= (int) read(M_FD(sp
) >= 0 ? M_FD(sp
) : sp
->_ifd
, &kbuf
, 3);
881 res
= (int) read(sp
->_ifd
, kbuf
+ grabbed
, 3 - grabbed
);
886 #if USE_PTHREADS_EINTR
887 _nc_globals
.read_thread
= 0;
892 ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf
));
894 /* there's only one mouse... */
895 eventp
->id
= NORMAL_EVENT
;
897 /* processing code goes here */
899 prev
= PREV(eventp
)->bstate
;
902 #define PRESS_POSITION(n) \
903 eventp->bstate = MASK_PRESS(n); \
904 if (kbuf[0] & 0x40) \
905 eventp->bstate = MASK_RELEASE(n)
907 #define PRESS_POSITION(n) \
908 eventp->bstate = (mmask_t) (prev & MASK_PRESS(n) \
909 ? REPORT_MOUSE_POSITION \
913 switch (kbuf
[0] & 0x3) {
916 eventp
->bstate
= MASK_PRESS(4);
922 #if NCURSES_MOUSE_VERSION == 2
924 eventp
->bstate
= MASK_PRESS(5);
936 * Release events aren't reported for individual buttons, just for
937 * the button set as a whole. However, because there are normally
938 * no mouse events under xterm that intervene between press and
939 * release, we can infer the button actually released by looking at
940 * the previous event.
942 if (prev
& (BUTTON_PRESSED
| BUTTON_RELEASED
)) {
943 eventp
->bstate
= BUTTON_RELEASED
;
944 for (b
= 1; b
<= MAX_BUTTONS
; ++b
) {
945 if (!(prev
& MASK_PRESS(b
)))
946 eventp
->bstate
&= ~MASK_RELEASE(b
);
950 * XFree86 xterm will return a stream of release-events to
951 * let the application know where the mouse is going, if the
952 * private mode 1002 or 1003 is enabled.
954 eventp
->bstate
= REPORT_MOUSE_POSITION
;
958 result
= (eventp
->bstate
& REPORT_MOUSE_POSITION
) ? TRUE
: FALSE
;
961 eventp
->bstate
|= BUTTON_SHIFT
;
964 eventp
->bstate
|= BUTTON_ALT
;
967 eventp
->bstate
|= BUTTON_CTRL
;
970 eventp
->x
= (kbuf
[1] - ' ') - 1;
971 eventp
->y
= (kbuf
[2] - ' ') - 1;
973 ("_nc_mouse_inline: primitive mouse-event %s has slot %ld",
974 _nc_tracemouse(sp
, eventp
),
975 (long) IndexEV(sp
, eventp
)));
977 /* bump the next-free pointer into the circular list */
978 sp
->_mouse_eventp
= NEXT(eventp
);
979 #if 0 /* this return would be needed for QNX's mods to lib_getch.c */
988 mouse_activate(SCREEN
*sp
, bool on
)
990 if (!on
&& !sp
->_mouse_initialized
)
993 if (!_nc_mouse_init(sp
))
998 switch (sp
->_mouse_type
) {
1000 #if NCURSES_EXT_FUNCS
1001 NCURSES_SP_NAME(keyok
) (NCURSES_SP_ARGx KEY_MOUSE
, on
);
1003 TPUTS_TRACE("xterm mouse initialization");
1004 enable_xterm_mouse(sp
, 1);
1008 if (enable_gpm_mouse(sp
, TRUE
)) {
1009 sp
->_mouse_fd
= *(my_gpm_fd
);
1010 T(("GPM mouse_fd %d", sp
->_mouse_fd
));
1016 signal(SIGUSR2
, handle_sysmouse
);
1017 sp
->_mouse_active
= TRUE
;
1020 #ifdef USE_TERM_DRIVER
1022 sp
->_mouse_active
= TRUE
;
1028 /* Make runtime binding to cut down on object size of applications that
1029 * do not use the mouse (e.g., 'clear').
1031 sp
->_mouse_event
= _nc_mouse_event
;
1032 sp
->_mouse_inline
= _nc_mouse_inline
;
1033 sp
->_mouse_parse
= _nc_mouse_parse
;
1034 sp
->_mouse_resume
= _nc_mouse_resume
;
1035 sp
->_mouse_wrap
= _nc_mouse_wrap
;
1038 switch (sp
->_mouse_type
) {
1040 TPUTS_TRACE("xterm mouse deinitialization");
1041 enable_xterm_mouse(sp
, 0);
1045 enable_gpm_mouse(sp
, FALSE
);
1050 signal(SIGUSR2
, SIG_IGN
);
1051 sp
->_mouse_active
= FALSE
;
1054 #ifdef USE_TERM_DRIVER
1056 sp
->_mouse_active
= FALSE
;
1063 NCURSES_SP_NAME(_nc_flush
) (NCURSES_SP_ARG
);
1066 /**************************************************************************
1068 * Device-independent code
1070 **************************************************************************/
1073 _nc_mouse_parse(SCREEN
*sp
, int runcount
)
1074 /* parse a run of atomic mouse events into a gesture */
1076 MEVENT
*eventp
= sp
->_mouse_eventp
;
1077 MEVENT
*ep
, *runp
, *next
, *prev
= PREV(eventp
);
1082 TR(MY_TRACE
, ("_nc_mouse_parse(%d) called", runcount
));
1085 * When we enter this routine, the event list next-free pointer
1086 * points just past a run of mouse events that we know were separated
1087 * in time by less than the critical click interval. The job of this
1088 * routine is to collapse this run into a single higher-level event
1091 * We accomplish this in two passes. The first pass merges press/release
1092 * pairs into click events. The second merges runs of click events into
1093 * double or triple-click events.
1095 * It's possible that the run may not resolve to a single event (for
1096 * example, if the user quadruple-clicks). If so, leading events
1097 * in the run are ignored.
1099 * Note that this routine is independent of the format of the specific
1100 * format of the pointing-device's reports. We can use it to parse
1101 * gestures on anything that reports press/release events on a per-
1102 * button basis, as long as the device-dependent mouse code puts stuff
1103 * on the queue in MEVENT format.
1105 if (runcount
== 1) {
1107 ("_nc_mouse_parse: returning simple mouse event %s at slot %ld",
1108 _nc_tracemouse(sp
, prev
),
1109 (long) IndexEV(sp
, prev
)));
1110 return (prev
->id
>= NORMAL_EVENT
)
1111 ? ((prev
->bstate
& sp
->_mouse_mask
) ? TRUE
: FALSE
)
1115 /* find the start of the run */
1117 for (n
= runcount
; n
> 0; n
--) {
1122 if (USE_TRACEF(TRACE_IEVENT
)) {
1123 _trace_slot(sp
, "before mouse press/release merge:");
1124 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1125 RunParams(sp
, eventp
, runp
),
1127 _nc_unlock_global(tracef
);
1131 /* first pass; merge press/release pairs */
1134 for (ep
= runp
; (next
= NEXT(ep
)) != eventp
; ep
= next
) {
1136 #define MASK_CHANGED(x) (!(ep->bstate & MASK_PRESS(x)) \
1137 == !(next->bstate & MASK_RELEASE(x)))
1139 if (ep
->x
== next
->x
&& ep
->y
== next
->y
1140 && (ep
->bstate
& BUTTON_PRESSED
)
1145 #if NCURSES_MOUSE_VERSION == 2
1149 for (b
= 1; b
<= MAX_BUTTONS
; ++b
) {
1150 if ((sp
->_mouse_mask
& MASK_CLICK(b
))
1151 && (ep
->bstate
& MASK_PRESS(b
))) {
1152 ep
->bstate
&= ~MASK_PRESS(b
);
1153 ep
->bstate
|= MASK_CLICK(b
);
1158 next
->id
= INVALID_EVENT
;
1165 if (USE_TRACEF(TRACE_IEVENT
)) {
1166 _trace_slot(sp
, "before mouse click merge:");
1167 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1168 RunParams(sp
, eventp
, runp
),
1170 _nc_unlock_global(tracef
);
1175 * Second pass; merge click runs. At this point, click events are
1176 * each followed by one invalid event. We merge click events
1177 * forward in the queue.
1179 * NOTE: There is a problem with this design! If the application
1180 * allows enough click events to pile up in the circular queue so
1181 * they wrap around, it will cheerfully merge the newest forward
1182 * into the oldest, creating a bogus doubleclick and confusing
1183 * the queue-traversal logic rather badly. Generally this won't
1184 * happen, because calling getmouse() marks old events invalid and
1185 * ineligible for merges. The true solution to this problem would
1186 * be to timestamp each MEVENT and perform the obvious sanity check,
1187 * but the timer element would have to have sub-second resolution,
1188 * which would get us into portability trouble.
1194 for (ep
= runp
; (next
= NEXT(ep
)) != eventp
; ep
= next
)
1195 if (ep
->id
!= INVALID_EVENT
) {
1196 if (next
->id
!= INVALID_EVENT
)
1198 follower
= NEXT(next
);
1199 if (follower
->id
== INVALID_EVENT
)
1202 /* merge click events forward */
1203 if ((ep
->bstate
& BUTTON_CLICKED
)
1204 && (follower
->bstate
& BUTTON_CLICKED
)) {
1205 for (b
= 1; b
<= MAX_BUTTONS
; ++b
) {
1206 if ((sp
->_mouse_mask
& MASK_DOUBLE_CLICK(b
))
1207 && (follower
->bstate
& MASK_CLICK(b
))) {
1208 follower
->bstate
&= ~MASK_CLICK(b
);
1209 follower
->bstate
|= MASK_DOUBLE_CLICK(b
);
1214 ep
->id
= INVALID_EVENT
;
1217 /* merge double-click events forward */
1218 if ((ep
->bstate
& BUTTON_DOUBLE_CLICKED
)
1219 && (follower
->bstate
& BUTTON_CLICKED
)) {
1220 for (b
= 1; b
<= MAX_BUTTONS
; ++b
) {
1221 if ((sp
->_mouse_mask
& MASK_TRIPLE_CLICK(b
))
1222 && (follower
->bstate
& MASK_CLICK(b
))) {
1223 follower
->bstate
&= ~MASK_CLICK(b
);
1224 follower
->bstate
|= MASK_TRIPLE_CLICK(b
);
1229 ep
->id
= INVALID_EVENT
;
1236 if (USE_TRACEF(TRACE_IEVENT
)) {
1237 _trace_slot(sp
, "before mouse event queue compaction:");
1238 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1239 RunParams(sp
, eventp
, runp
),
1241 _nc_unlock_global(tracef
);
1246 * Now try to throw away trailing events flagged invalid, or that
1247 * don't match the current event mask.
1249 for (; runcount
; prev
= PREV(eventp
), runcount
--)
1250 if (prev
->id
== INVALID_EVENT
|| !(prev
->bstate
& sp
->_mouse_mask
)) {
1251 sp
->_mouse_eventp
= eventp
= prev
;
1254 if (USE_TRACEF(TRACE_IEVENT
)) {
1255 _trace_slot(sp
, "after mouse event queue compaction:");
1256 _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d",
1257 RunParams(sp
, eventp
, runp
),
1259 _nc_unlock_global(tracef
);
1261 for (ep
= runp
; ep
!= eventp
; ep
= NEXT(ep
))
1262 if (ep
->id
!= INVALID_EVENT
)
1264 ("_nc_mouse_parse: returning composite mouse event %s at slot %ld",
1265 _nc_tracemouse(sp
, ep
),
1266 (long) IndexEV(sp
, ep
)));
1269 /* after all this, do we have a valid event? */
1270 return (PREV(eventp
)->id
!= INVALID_EVENT
);
1274 _nc_mouse_wrap(SCREEN
*sp
)
1275 /* release mouse -- called by endwin() before shellout/exit */
1277 TR(MY_TRACE
, ("_nc_mouse_wrap() called"));
1279 switch (sp
->_mouse_type
) {
1281 if (sp
->_mouse_mask
)
1282 mouse_activate(sp
, FALSE
);
1285 /* GPM: pass all mouse events to next client */
1287 if (sp
->_mouse_mask
)
1288 mouse_activate(sp
, FALSE
);
1293 mouse_activate(sp
, FALSE
);
1296 #ifdef USE_TERM_DRIVER
1298 mouse_activate(sp
, FALSE
);
1307 _nc_mouse_resume(SCREEN
*sp
)
1308 /* re-connect to mouse -- called by doupdate() after shellout */
1310 TR(MY_TRACE
, ("_nc_mouse_resume() called"));
1312 switch (sp
->_mouse_type
) {
1314 /* xterm: re-enable reporting */
1315 if (sp
->_mouse_mask
)
1316 mouse_activate(sp
, TRUE
);
1321 /* GPM: reclaim our event set */
1322 if (sp
->_mouse_mask
)
1323 mouse_activate(sp
, TRUE
);
1329 mouse_activate(sp
, TRUE
);
1333 #ifdef USE_TERM_DRIVER
1335 mouse_activate(sp
, TRUE
);
1344 /**************************************************************************
1346 * Mouse interface entry points for the API
1348 **************************************************************************/
1351 NCURSES_SP_NAME(getmouse
) (NCURSES_SP_DCLx MEVENT
* aevent
)
1355 T((T_CALLED("getmouse(%p,%p)"), (void *) SP_PARM
, (void *) aevent
));
1357 if ((aevent
!= 0) && (SP_PARM
!= 0) && (SP_PARM
->_mouse_type
!= M_NONE
)) {
1358 MEVENT
*eventp
= SP_PARM
->_mouse_eventp
;
1359 /* compute the current-event pointer */
1360 MEVENT
*prev
= PREV(eventp
);
1362 if (prev
->id
!= INVALID_EVENT
) {
1363 /* copy the event we find there */
1366 TR(TRACE_IEVENT
, ("getmouse: returning event %s from slot %ld",
1367 _nc_tracemouse(SP_PARM
, prev
),
1368 (long) IndexEV(SP_PARM
, prev
)));
1370 prev
->id
= INVALID_EVENT
; /* so the queue slot becomes free */
1371 SP_PARM
->_mouse_eventp
= PREV(prev
);
1378 #if NCURSES_SP_FUNCS
1379 /* grab a copy of the current mouse event */
1381 getmouse(MEVENT
* aevent
)
1383 return NCURSES_SP_NAME(getmouse
) (CURRENT_SCREEN
, aevent
);
1388 NCURSES_SP_NAME(ungetmouse
) (NCURSES_SP_DCLx MEVENT
* aevent
)
1392 T((T_CALLED("ungetmouse(%p,%p)"), (void *) SP_PARM
, (void *) aevent
));
1394 if (aevent
!= 0 && SP_PARM
!= 0) {
1395 MEVENT
*eventp
= SP_PARM
->_mouse_eventp
;
1397 /* stick the given event in the next-free slot */
1400 /* bump the next-free pointer into the circular list */
1401 SP_PARM
->_mouse_eventp
= NEXT(eventp
);
1403 /* push back the notification event on the keyboard queue */
1404 result
= NCURSES_SP_NAME(ungetch
) (NCURSES_SP_ARGx KEY_MOUSE
);
1409 #if NCURSES_SP_FUNCS
1410 /* enqueue a synthesized mouse event to be seen by the next wgetch() */
1412 ungetmouse(MEVENT
* aevent
)
1414 return NCURSES_SP_NAME(ungetmouse
) (CURRENT_SCREEN
, aevent
);
1418 NCURSES_EXPORT(mmask_t
)
1419 NCURSES_SP_NAME(mousemask
) (NCURSES_SP_DCLx mmask_t newmask
, mmask_t
* oldmask
)
1420 /* set the mouse event mask */
1424 T((T_CALLED("mousemask(%p,%#lx,%p)"),
1426 (unsigned long) newmask
,
1431 *oldmask
= SP_PARM
->_mouse_mask
;
1433 if (newmask
|| SP_PARM
->_mouse_initialized
) {
1434 _nc_mouse_init(SP_PARM
);
1435 if (SP_PARM
->_mouse_type
!= M_NONE
) {
1437 (REPORT_MOUSE_POSITION
1444 | BUTTON_DOUBLE_CLICKED
1445 | BUTTON_TRIPLE_CLICKED
);
1447 mouse_activate(SP_PARM
, (bool) (result
!= 0));
1449 SP_PARM
->_mouse_mask
= result
;
1453 returnMMask(result
);
1456 #if NCURSES_SP_FUNCS
1457 NCURSES_EXPORT(mmask_t
)
1458 mousemask(mmask_t newmask
, mmask_t
* oldmask
)
1460 return NCURSES_SP_NAME(mousemask
) (CURRENT_SCREEN
, newmask
, oldmask
);
1464 NCURSES_EXPORT(bool)
1465 wenclose(const WINDOW
*win
, int y
, int x
)
1466 /* check to see if given window encloses given screen location */
1468 bool result
= FALSE
;
1470 T((T_CALLED("wenclose(%p,%d,%d)"), (const void *) win
, y
, x
));
1474 result
= ((win
->_begy
<= y
&&
1476 (win
->_begx
+ win
->_maxx
) >= x
&&
1477 (win
->_begy
+ win
->_maxy
) >= y
) ? TRUE
: FALSE
);
1483 NCURSES_SP_NAME(mouseinterval
) (NCURSES_SP_DCLx
int maxclick
)
1484 /* set the maximum mouse interval within which to recognize a click */
1488 T((T_CALLED("mouseinterval(%p,%d)"), (void *) SP_PARM
, maxclick
));
1491 oldval
= SP_PARM
->_maxclick
;
1493 SP_PARM
->_maxclick
= maxclick
;
1495 oldval
= DEFAULT_MAXCLICK
;
1501 #if NCURSES_SP_FUNCS
1503 mouseinterval(int maxclick
)
1505 return NCURSES_SP_NAME(mouseinterval
) (CURRENT_SCREEN
, maxclick
);
1509 /* This may be used by other routines to ask for the existence of mouse
1511 NCURSES_EXPORT(bool)
1512 _nc_has_mouse(SCREEN
*sp
)
1514 return (((0 == sp
) || (sp
->_mouse_type
== M_NONE
)) ? FALSE
: TRUE
);
1517 NCURSES_EXPORT(bool)
1518 NCURSES_SP_NAME(has_mouse
) (NCURSES_SP_DCL0
)
1520 return _nc_has_mouse(SP_PARM
);
1523 #if NCURSES_SP_FUNCS
1524 NCURSES_EXPORT(bool)
1527 return _nc_has_mouse(CURRENT_SCREEN
);
1531 NCURSES_EXPORT(bool)
1532 wmouse_trafo(const WINDOW
*win
, int *pY
, int *pX
, bool to_screen
)
1534 bool result
= FALSE
;
1536 T((T_CALLED("wmouse_trafo(%p,%p,%p,%d)"),
1542 if (win
&& pY
&& pX
) {
1547 y
+= win
->_begy
+ win
->_yoffset
;
1549 if (wenclose(win
, y
, x
))
1552 if (wenclose(win
, y
, x
)) {
1553 y
-= (win
->_begy
+ win
->_yoffset
);