diff options
Diffstat (limited to 'ncurses-5.9/ncurses/base/lib_mouse.c')
| -rw-r--r-- | ncurses-5.9/ncurses/base/lib_mouse.c | 1564 |
1 files changed, 1564 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/base/lib_mouse.c b/ncurses-5.9/ncurses/base/lib_mouse.c new file mode 100644 index 0000000..f609f1d --- /dev/null +++ b/ncurses-5.9/ncurses/base/lib_mouse.c @@ -0,0 +1,1564 @@ +/**************************************************************************** + * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + * and: Thomas E. Dickey 1996-on * + * and: Juergen Pfeifer 2008 * + ****************************************************************************/ + +/* + * This module is intended to encapsulate ncurses's interface to pointing + * devices. + * + * The primary method used is xterm's internal mouse-tracking facility. + * Additional methods depend on the platform: + * Alessandro Rubini's GPM server (Linux) + * sysmouse (FreeBSD) + * special-purpose mouse interface for OS/2 EMX. + * + * Notes for implementors of new mouse-interface methods: + * + * The code is logically split into a lower level that accepts event reports + * in a device-dependent format and an upper level that parses mouse gestures + * and filters events. The mediating data structure is a circular queue of + * MEVENT structures. + * + * Functionally, the lower level's job is to pick up primitive events and + * put them on the circular queue. This can happen in one of two ways: + * either (a) _nc_mouse_event() detects a series of incoming mouse reports + * and queues them, or (b) code in lib_getch.c detects the kmous prefix in + * the keyboard input stream and calls _nc_mouse_inline to queue up a series + * of adjacent mouse reports. + * + * In either case, _nc_mouse_parse() should be called after the series is + * accepted to parse the digested mouse reports (low-level MEVENTs) into + * a gesture (a high-level or composite MEVENT). + * + * Don't be too shy about adding new event types or modifiers, if you can find + * room for them in the 32-bit mask. The API is written so that users get + * feedback on which theoretical event types they won't see when they call + * mousemask. There's one bit per button (the RESERVED_EVENT bit) not being + * used yet, and a couple of bits open at the high end. + */ + +#ifdef __EMX__ +# include <io.h> +# define INCL_DOS +# define INCL_VIO +# define INCL_KBD +# define INCL_MOU +# define INCL_DOSPROCESS +# include <os2.h> /* Need to include before the others */ +#endif + +#include <curses.priv.h> + +#ifndef CUR +#define CUR SP_TERMTYPE +#endif + +MODULE_ID("$Id$") + +#include <tic.h> + +#if USE_GPM_SUPPORT +#include <linux/keyboard.h> /* defines KG_* macros */ + +#ifdef HAVE_LIBDL +/* use dynamic loader to avoid linkage dependency */ +#include <dlfcn.h> + +#ifdef RTLD_NOW +#define my_RTLD RTLD_NOW +#else +#ifdef RTLD_LAZY +#define my_RTLD RTLD_LAZY +#else +make an error +#endif +#endif /* RTLD_NOW */ +#endif /* HAVE_LIBDL */ + +#endif /* USE_GPM_SUPPORT */ + +#if USE_SYSMOUSE +#undef buttons /* symbol conflict in consio.h */ +#undef mouse_info /* symbol conflict in consio.h */ +#include <osreldate.h> +#if (__FreeBSD_version >= 400017) +#include <sys/consio.h> +#include <sys/fbio.h> +#else +#include <machine/console.h> +#endif +#endif /* use_SYSMOUSE */ + +#define MY_TRACE TRACE_ICALLS|TRACE_IEVENT + +#define MASK_RELEASE(x) (mmask_t) NCURSES_MOUSE_MASK(x, 001) +#define MASK_PRESS(x) (mmask_t) NCURSES_MOUSE_MASK(x, 002) +#define MASK_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 004) +#define MASK_DOUBLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 010) +#define MASK_TRIPLE_CLICK(x) (mmask_t) NCURSES_MOUSE_MASK(x, 020) +#define MASK_RESERVED_EVENT(x) (mmask_t) NCURSES_MOUSE_MASK(x, 040) + +#if NCURSES_MOUSE_VERSION == 1 +#define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED) +#define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED) +#define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED) +#define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED) +#define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED) +#define MAX_BUTTONS 4 +#else +#define BUTTON_CLICKED (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED | BUTTON4_CLICKED | BUTTON5_CLICKED) +#define BUTTON_PRESSED (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED | BUTTON4_PRESSED | BUTTON5_PRESSED) +#define BUTTON_RELEASED (BUTTON1_RELEASED | BUTTON2_RELEASED | BUTTON3_RELEASED | BUTTON4_RELEASED | BUTTON5_RELEASED) +#define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED | BUTTON5_DOUBLE_CLICKED) +#define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED | BUTTON5_TRIPLE_CLICKED) +#define MAX_BUTTONS 5 +#endif + +#define INVALID_EVENT -1 +#define NORMAL_EVENT 0 + +#if USE_GPM_SUPPORT + +#ifndef LIBGPM_SONAME +#define LIBGPM_SONAME "libgpm.so" +#endif + +#define GET_DLSYM(name) (my_##name = (TYPE_##name) dlsym(sp->_dlopen_gpm, #name)) + +#endif /* USE_GPM_SUPPORT */ + +static bool _nc_mouse_parse(SCREEN *, int); +static void _nc_mouse_resume(SCREEN *); +static void _nc_mouse_wrap(SCREEN *); + +/* maintain a circular list of mouse events */ + +#define FirstEV(sp) ((sp)->_mouse_events) +#define LastEV(sp) ((sp)->_mouse_events + EV_MAX - 1) + +#undef NEXT +#define NEXT(ep) ((ep >= LastEV(SP_PARM)) \ + ? FirstEV(SP_PARM) \ + : ep + 1) + +#undef PREV +#define PREV(ep) ((ep <= FirstEV(SP_PARM)) \ + ? LastEV(SP_PARM) \ + : ep - 1) + +#define IndexEV(sp, ep) (ep - FirstEV(sp)) + +#define RunParams(sp, eventp, runp) \ + (long) IndexEV(sp, runp), \ + (long) (IndexEV(sp, eventp) + (EV_MAX - 1)) % EV_MAX + +#ifdef TRACE +static void +_trace_slot(SCREEN *sp, const char *tag) +{ + MEVENT *ep; + + _tracef("%s", tag); + + for (ep = FirstEV(sp); ep <= LastEV(sp); ep++) + _tracef("mouse event queue slot %ld = %s", + (long) IndexEV(sp, ep), + _nc_tracemouse(sp, ep)); +} +#endif + +#if USE_EMX_MOUSE + +# define TOP_ROW 0 +# define LEFT_COL 0 + +# define M_FD(sp) sp->_mouse_fd + +static void +write_event(SCREEN *sp, int down, int button, int x, int y) +{ + char buf[6]; + unsigned long ignore; + + strncpy(buf, key_mouse, 3); /* should be "\033[M" */ + buf[3] = ' ' + (button - 1) + (down ? 0 : 0x40); + buf[4] = ' ' + x - LEFT_COL + 1; + buf[5] = ' ' + y - TOP_ROW + 1; + DosWrite(sp->_emxmouse_wfd, buf, 6, &ignore); +} + +static void +mouse_server(unsigned long param) +{ + SCREEN *sp = (SCREEN *) param; + unsigned short fWait = MOU_WAIT; + /* NOPTRRECT mourt = { 0,0,24,79 }; */ + MOUEVENTINFO mouev; + HMOU hmou; + unsigned short mask = MOUSE_BN1_DOWN | MOUSE_BN2_DOWN | MOUSE_BN3_DOWN; + int nbuttons = 3; + int oldstate = 0; + char err[80]; + unsigned long rc; + + /* open the handle for the mouse */ + if (MouOpen(NULL, &hmou) == 0) { + rc = MouSetEventMask(&mask, hmou); + if (rc) { /* retry with 2 buttons */ + mask = MOUSE_BN1_DOWN | MOUSE_BN2_DOWN; + rc = MouSetEventMask(&mask, hmou); + nbuttons = 2; + } + if (rc == 0 && MouDrawPtr(hmou) == 0) { + for (;;) { + /* sit and wait on the event queue */ + rc = MouReadEventQue(&mouev, &fWait, hmou); + if (rc) { + sprintf(err, "Error reading mouse queue, rc=%lu.\r\n", rc); + break; + } + if (!sp->_emxmouse_activated) + goto finish; + + /* + * OS/2 numbers a 3-button mouse inconsistently from other + * platforms: + * 1 = left + * 2 = right + * 3 = middle. + */ + if ((mouev.fs ^ oldstate) & MOUSE_BN1_DOWN) + write_event(sp, mouev.fs & MOUSE_BN1_DOWN, + sp->_emxmouse_buttons[1], mouev.col, mouev.row); + if ((mouev.fs ^ oldstate) & MOUSE_BN2_DOWN) + write_event(sp, mouev.fs & MOUSE_BN2_DOWN, + sp->_emxmouse_buttons[3], mouev.col, mouev.row); + if ((mouev.fs ^ oldstate) & MOUSE_BN3_DOWN) + write_event(sp, mouev.fs & MOUSE_BN3_DOWN, + sp->_emxmouse_buttons[2], mouev.col, mouev.row); + + finish: + oldstate = mouev.fs; + } + } else + sprintf(err, "Error setting event mask, buttons=%d, rc=%lu.\r\n", + nbuttons, rc); + + DosWrite(2, err, strlen(err), &rc); + MouClose(hmou); + } + DosExit(EXIT_THREAD, 0L); +} + +#endif /* USE_EMX_MOUSE */ + +#if USE_SYSMOUSE +static void +sysmouse_server(SCREEN *sp) +{ + struct mouse_info the_mouse; + MEVENT *work; + + the_mouse.operation = MOUSE_GETINFO; + if (sp != 0 + && sp->_mouse_fd >= 0 + && sp->_sysmouse_tail < FIFO_SIZE + && ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse) != -1) { + + if (sp->_sysmouse_head > sp->_sysmouse_tail) { + sp->_sysmouse_tail = 0; + sp->_sysmouse_head = 0; + } + work = &(sp->_sysmouse_fifo[sp->_sysmouse_tail]); + memset(work, 0, sizeof(*work)); + work->id = NORMAL_EVENT; /* there's only one mouse... */ + + sp->_sysmouse_old_buttons = sp->_sysmouse_new_buttons; + sp->_sysmouse_new_buttons = the_mouse.u.data.buttons & 0x7; + + if (sp->_sysmouse_new_buttons) { + if (sp->_sysmouse_new_buttons & 1) + work->bstate |= BUTTON1_PRESSED; + if (sp->_sysmouse_new_buttons & 2) + work->bstate |= BUTTON2_PRESSED; + if (sp->_sysmouse_new_buttons & 4) + work->bstate |= BUTTON3_PRESSED; + } else { + if (sp->_sysmouse_old_buttons & 1) + work->bstate |= BUTTON1_RELEASED; + if (sp->_sysmouse_old_buttons & 2) + work->bstate |= BUTTON2_RELEASED; + if (sp->_sysmouse_old_buttons & 4) + work->bstate |= BUTTON3_RELEASED; + } + + /* for cosmetic bug in syscons.c on FreeBSD 3.[34] */ + the_mouse.operation = MOUSE_HIDE; + ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse); + the_mouse.operation = MOUSE_SHOW; + ioctl(sp->_mouse_fd, CONS_MOUSECTL, &the_mouse); + + /* + * We're only interested if the button is pressed or released. + * FIXME: implement continuous event-tracking. + */ + if (sp->_sysmouse_new_buttons != sp->_sysmouse_old_buttons) { + sp->_sysmouse_tail += 1; + } + work->x = the_mouse.u.data.x / sp->_sysmouse_char_width; + work->y = the_mouse.u.data.y / sp->_sysmouse_char_height; + } +} + +static void +handle_sysmouse(int sig GCC_UNUSED) +{ + sysmouse_server(CURRENT_SCREEN); +} +#endif /* USE_SYSMOUSE */ + +#ifndef USE_TERM_DRIVER +#define xterm_kmous "\033[M" + +static void +init_xterm_mouse(SCREEN *sp) +{ + sp->_mouse_type = M_XTERM; + sp->_mouse_xtermcap = tigetstr("XM"); + if (!VALID_STRING(sp->_mouse_xtermcap)) + sp->_mouse_xtermcap = "\033[?1000%?%p1%{1}%=%th%el%;"; +} +#endif + +static void +enable_xterm_mouse(SCREEN *sp, int enable) +{ +#if USE_EMX_MOUSE + sp->_emxmouse_activated = enable; +#else + NCURSES_SP_NAME(_nc_putp) (NCURSES_SP_ARGx + "xterm-mouse", + TPARM_1(sp->_mouse_xtermcap, enable)); +#endif + sp->_mouse_active = enable; +} + +#if USE_GPM_SUPPORT +static bool +allow_gpm_mouse(void) +{ + bool result = FALSE; + + /* GPM does printf's without checking if stdout is a terminal */ + if (isatty(fileno(stdout))) { + char *list = getenv("NCURSES_GPM_TERMS"); + char *env = getenv("TERM"); + if (list != 0) { + if (env != 0) { + result = _nc_name_match(list, env, "|:"); + } + } else { + /* GPM checks the beginning of the $TERM variable to decide if it + * should pass xterm events through. There is no real advantage in + * allowing GPM to do this. Recent versions relax that check, and + * pretend that GPM can work with any terminal having the kmous + * capability. Perhaps that works for someone. If so, they can + * set the environment variable (above). + */ + if (env != 0 && strstr(env, "linux") != 0) { + result = TRUE; + } + } + } + return result; +} + +#ifdef HAVE_LIBDL +static void +unload_gpm_library(SCREEN *sp) +{ + if (sp->_dlopen_gpm != 0) { + T(("unload GPM library")); + sp->_mouse_gpm_loaded = FALSE; + sp->_mouse_fd = -1; + dlclose(sp->_dlopen_gpm); + sp->_dlopen_gpm = 0; + } +} + +static void +load_gpm_library(SCREEN *sp) +{ + sp->_mouse_gpm_found = FALSE; + if ((sp->_dlopen_gpm = dlopen(LIBGPM_SONAME, my_RTLD)) != 0) { + if (GET_DLSYM(gpm_fd) == 0 || + GET_DLSYM(Gpm_Open) == 0 || + GET_DLSYM(Gpm_Close) == 0 || + GET_DLSYM(Gpm_GetEvent) == 0) { + T(("GPM initialization failed: %s", dlerror())); + unload_gpm_library(sp); + } else { + sp->_mouse_gpm_found = TRUE; + sp->_mouse_gpm_loaded = TRUE; + } + } +} +#endif + +static bool +enable_gpm_mouse(SCREEN *sp, bool enable) +{ + bool result; + + T((T_CALLED("enable_gpm_mouse(%d)"), enable)); + + if (enable && !sp->_mouse_active) { +#ifdef HAVE_LIBDL + if (sp->_mouse_gpm_found && !sp->_mouse_gpm_loaded) { + load_gpm_library(sp); + } +#endif + if (sp->_mouse_gpm_loaded) { + int code; + + /* GPM: initialize connection to gpm server */ + sp->_mouse_gpm_connect.eventMask = GPM_DOWN | GPM_UP; + sp->_mouse_gpm_connect.defaultMask = + (unsigned short) (~(sp->_mouse_gpm_connect.eventMask | GPM_HARD)); + sp->_mouse_gpm_connect.minMod = 0; + sp->_mouse_gpm_connect.maxMod = + (unsigned short) (~((1 << KG_SHIFT) | + (1 << KG_SHIFTL) | + (1 << KG_SHIFTR))); + /* + * Note: GPM hardcodes \E[?1001s and \E[?1000h during its open. + * The former is recognized by wscons (SunOS), and the latter by + * xterm. Those will not show up in ncurses' traces. + */ + code = my_Gpm_Open(&sp->_mouse_gpm_connect, 0); + result = (code >= 0); + + /* + * GPM can return a -2 if it is trying to do something with xterm. + * Ignore that, since it conflicts with our use of stdin. + */ + if (code == -2) { + my_Gpm_Close(); + } + } else { + result = FALSE; + } + sp->_mouse_active = result; + T(("GPM open %s", result ? "succeeded" : "failed")); + } else { + if (!enable && sp->_mouse_active) { + /* GPM: close connection to gpm server */ + my_Gpm_Close(); + sp->_mouse_active = FALSE; + T(("GPM closed")); + } + result = enable; + } +#ifdef HAVE_LIBDL + if (!result) { + unload_gpm_library(sp); + } +#endif + returnBool(result); +} +#endif /* USE_GPM_SUPPORT */ + +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; +} + +static bool +_nc_mouse_init(SCREEN *sp) +/* initialize the mouse */ +{ + bool result = FALSE; + int i; + + if (sp != 0) { + if (!sp->_mouse_initialized) { + sp->_mouse_initialized = TRUE; + + TR(MY_TRACE, ("_nc_mouse_init() called")); + + sp->_mouse_eventp = FirstEV(sp); + for (i = 0; i < EV_MAX; i++) + sp->_mouse_events[i].id = INVALID_EVENT; + + initialize_mousetype(sp); + + T(("_nc_mouse_init() set mousetype to %d", sp->_mouse_type)); + } + result = sp->_mouse_initialized; + } + return result; +} + +/* + * 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 +mouse_activate(SCREEN *sp, bool on) +{ + if (!on && !sp->_mouse_initialized) + return; + + if (!_nc_mouse_init(sp)) + return; + + if (on) { + + switch (sp->_mouse_type) { + case M_XTERM: +#if NCURSES_EXT_FUNCS + NCURSES_SP_NAME(keyok) (NCURSES_SP_ARGx KEY_MOUSE, on); +#endif + TPUTS_TRACE("xterm mouse initialization"); + enable_xterm_mouse(sp, 1); + break; +#if USE_GPM_SUPPORT + case M_GPM: + if (enable_gpm_mouse(sp, TRUE)) { + sp->_mouse_fd = *(my_gpm_fd); + T(("GPM mouse_fd %d", sp->_mouse_fd)); + } + break; +#endif +#if USE_SYSMOUSE + case M_SYSMOUSE: + signal(SIGUSR2, handle_sysmouse); + sp->_mouse_active = TRUE; + break; +#endif +#ifdef USE_TERM_DRIVER + case M_TERM_DRIVER: + sp->_mouse_active = TRUE; + break; +#endif + case M_NONE: + return; + } + /* Make runtime binding to cut down on object size of applications that + * do not use the mouse (e.g., 'clear'). + */ + sp->_mouse_event = _nc_mouse_event; + sp->_mouse_inline = _nc_mouse_inline; + sp->_mouse_parse = _nc_mouse_parse; + sp->_mouse_resume = _nc_mouse_resume; + sp->_mouse_wrap = _nc_mouse_wrap; + } else { + + switch (sp->_mouse_type) { + case M_XTERM: + TPUTS_TRACE("xterm mouse deinitialization"); + enable_xterm_mouse(sp, 0); + break; +#if USE_GPM_SUPPORT + case M_GPM: + enable_gpm_mouse(sp, FALSE); + break; +#endif +#if USE_SYSMOUSE + case M_SYSMOUSE: + signal(SIGUSR2, SIG_IGN); + sp->_mouse_active = FALSE; + break; +#endif +#ifdef USE_TERM_DRIVER + case M_TERM_DRIVER: + sp->_mouse_active = FALSE; + break; +#endif + case M_NONE: + return; + } + } + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); +} + +/************************************************************************** + * + * Device-independent code + * + **************************************************************************/ + +static bool +_nc_mouse_parse(SCREEN *sp, int runcount) +/* parse a run of atomic mouse events into a gesture */ +{ + MEVENT *eventp = sp->_mouse_eventp; + MEVENT *ep, *runp, *next, *prev = PREV(eventp); + int n; + int b; + bool merge; + + TR(MY_TRACE, ("_nc_mouse_parse(%d) called", runcount)); + + /* + * When we enter this routine, the event list next-free pointer + * points just past a run of mouse events that we know were separated + * in time by less than the critical click interval. The job of this + * routine is to collapse this run into a single higher-level event + * or gesture. + * + * We accomplish this in two passes. The first pass merges press/release + * pairs into click events. The second merges runs of click events into + * double or triple-click events. + * + * It's possible that the run may not resolve to a single event (for + * example, if the user quadruple-clicks). If so, leading events + * in the run are ignored. + * + * Note that this routine is independent of the format of the specific + * format of the pointing-device's reports. We can use it to parse + * gestures on anything that reports press/release events on a per- + * button basis, as long as the device-dependent mouse code puts stuff + * on the queue in MEVENT format. + */ + if (runcount == 1) { + TR(MY_TRACE, + ("_nc_mouse_parse: returning simple mouse event %s at slot %ld", + _nc_tracemouse(sp, prev), + (long) IndexEV(sp, prev))); + return (prev->id >= NORMAL_EVENT) + ? ((prev->bstate & sp->_mouse_mask) ? TRUE : FALSE) + : FALSE; + } + + /* find the start of the run */ + runp = eventp; + for (n = runcount; n > 0; n--) { + runp = PREV(runp); + } + +#ifdef TRACE + if (USE_TRACEF(TRACE_IEVENT)) { + _trace_slot(sp, "before mouse press/release merge:"); + _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", + RunParams(sp, eventp, runp), + runcount); + _nc_unlock_global(tracef); + } +#endif /* TRACE */ + + /* first pass; merge press/release pairs */ + do { + merge = FALSE; + for (ep = runp; (next = NEXT(ep)) != eventp; ep = next) { + +#define MASK_CHANGED(x) (!(ep->bstate & MASK_PRESS(x)) \ + == !(next->bstate & MASK_RELEASE(x))) + + if (ep->x == next->x && ep->y == next->y + && (ep->bstate & BUTTON_PRESSED) + && MASK_CHANGED(1) + && MASK_CHANGED(2) + && MASK_CHANGED(3) + && MASK_CHANGED(4) +#if NCURSES_MOUSE_VERSION == 2 + && MASK_CHANGED(5) +#endif + ) { + for (b = 1; b <= MAX_BUTTONS; ++b) { + if ((sp->_mouse_mask & MASK_CLICK(b)) + && (ep->bstate & MASK_PRESS(b))) { + ep->bstate &= ~MASK_PRESS(b); + ep->bstate |= MASK_CLICK(b); + merge = TRUE; + } + } + if (merge) + next->id = INVALID_EVENT; + } + } + } while + (merge); + +#ifdef TRACE + if (USE_TRACEF(TRACE_IEVENT)) { + _trace_slot(sp, "before mouse click merge:"); + _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", + RunParams(sp, eventp, runp), + runcount); + _nc_unlock_global(tracef); + } +#endif /* TRACE */ + + /* + * Second pass; merge click runs. At this point, click events are + * each followed by one invalid event. We merge click events + * forward in the queue. + * + * NOTE: There is a problem with this design! If the application + * allows enough click events to pile up in the circular queue so + * they wrap around, it will cheerfully merge the newest forward + * into the oldest, creating a bogus doubleclick and confusing + * the queue-traversal logic rather badly. Generally this won't + * happen, because calling getmouse() marks old events invalid and + * ineligible for merges. The true solution to this problem would + * be to timestamp each MEVENT and perform the obvious sanity check, + * but the timer element would have to have sub-second resolution, + * which would get us into portability trouble. + */ + do { + MEVENT *follower; + + merge = FALSE; + for (ep = runp; (next = NEXT(ep)) != eventp; ep = next) + if (ep->id != INVALID_EVENT) { + if (next->id != INVALID_EVENT) + continue; + follower = NEXT(next); + if (follower->id == INVALID_EVENT) + continue; + + /* merge click events forward */ + if ((ep->bstate & BUTTON_CLICKED) + && (follower->bstate & BUTTON_CLICKED)) { + for (b = 1; b <= MAX_BUTTONS; ++b) { + if ((sp->_mouse_mask & MASK_DOUBLE_CLICK(b)) + && (follower->bstate & MASK_CLICK(b))) { + follower->bstate &= ~MASK_CLICK(b); + follower->bstate |= MASK_DOUBLE_CLICK(b); + merge = TRUE; + } + } + if (merge) + ep->id = INVALID_EVENT; + } + + /* merge double-click events forward */ + if ((ep->bstate & BUTTON_DOUBLE_CLICKED) + && (follower->bstate & BUTTON_CLICKED)) { + for (b = 1; b <= MAX_BUTTONS; ++b) { + if ((sp->_mouse_mask & MASK_TRIPLE_CLICK(b)) + && (follower->bstate & MASK_CLICK(b))) { + follower->bstate &= ~MASK_CLICK(b); + follower->bstate |= MASK_TRIPLE_CLICK(b); + merge = TRUE; + } + } + if (merge) + ep->id = INVALID_EVENT; + } + } + } while + (merge); + +#ifdef TRACE + if (USE_TRACEF(TRACE_IEVENT)) { + _trace_slot(sp, "before mouse event queue compaction:"); + _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", + RunParams(sp, eventp, runp), + runcount); + _nc_unlock_global(tracef); + } +#endif /* TRACE */ + + /* + * Now try to throw away trailing events flagged invalid, or that + * don't match the current event mask. + */ + for (; runcount; prev = PREV(eventp), runcount--) + if (prev->id == INVALID_EVENT || !(prev->bstate & sp->_mouse_mask)) { + sp->_mouse_eventp = eventp = prev; + } +#ifdef TRACE + if (USE_TRACEF(TRACE_IEVENT)) { + _trace_slot(sp, "after mouse event queue compaction:"); + _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", + RunParams(sp, eventp, runp), + runcount); + _nc_unlock_global(tracef); + } + for (ep = runp; ep != eventp; ep = NEXT(ep)) + if (ep->id != INVALID_EVENT) + TR(MY_TRACE, + ("_nc_mouse_parse: returning composite mouse event %s at slot %ld", + _nc_tracemouse(sp, ep), + (long) IndexEV(sp, ep))); +#endif /* TRACE */ + + /* after all this, do we have a valid event? */ + return (PREV(eventp)->id != INVALID_EVENT); +} + +static void +_nc_mouse_wrap(SCREEN *sp) +/* release mouse -- called by endwin() before shellout/exit */ +{ + TR(MY_TRACE, ("_nc_mouse_wrap() called")); + + switch (sp->_mouse_type) { + case M_XTERM: + if (sp->_mouse_mask) + mouse_activate(sp, FALSE); + break; +#if USE_GPM_SUPPORT + /* GPM: pass all mouse events to next client */ + case M_GPM: + if (sp->_mouse_mask) + mouse_activate(sp, FALSE); + break; +#endif +#if USE_SYSMOUSE + case M_SYSMOUSE: + mouse_activate(sp, FALSE); + break; +#endif +#ifdef USE_TERM_DRIVER + case M_TERM_DRIVER: + mouse_activate(sp, FALSE); + break; +#endif + case M_NONE: + break; + } +} + +static void +_nc_mouse_resume(SCREEN *sp) +/* re-connect to mouse -- called by doupdate() after shellout */ +{ + TR(MY_TRACE, ("_nc_mouse_resume() called")); + + switch (sp->_mouse_type) { + case M_XTERM: + /* xterm: re-enable reporting */ + if (sp->_mouse_mask) + mouse_activate(sp, TRUE); + break; + +#if USE_GPM_SUPPORT + case M_GPM: + /* GPM: reclaim our event set */ + if (sp->_mouse_mask) + mouse_activate(sp, TRUE); + break; +#endif + +#if USE_SYSMOUSE + case M_SYSMOUSE: + mouse_activate(sp, TRUE); + break; +#endif + +#ifdef USE_TERM_DRIVER + case M_TERM_DRIVER: + mouse_activate(sp, TRUE); + break; +#endif + + case M_NONE: + break; + } +} + +/************************************************************************** + * + * Mouse interface entry points for the API + * + **************************************************************************/ + +NCURSES_EXPORT(int) +NCURSES_SP_NAME(getmouse) (NCURSES_SP_DCLx MEVENT * aevent) +{ + int result = ERR; + + T((T_CALLED("getmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent)); + + if ((aevent != 0) && (SP_PARM != 0) && (SP_PARM->_mouse_type != M_NONE)) { + MEVENT *eventp = SP_PARM->_mouse_eventp; + /* compute the current-event pointer */ + MEVENT *prev = PREV(eventp); + + if (prev->id != INVALID_EVENT) { + /* copy the event we find there */ + *aevent = *prev; + + TR(TRACE_IEVENT, ("getmouse: returning event %s from slot %ld", + _nc_tracemouse(SP_PARM, prev), + (long) IndexEV(SP_PARM, prev))); + + prev->id = INVALID_EVENT; /* so the queue slot becomes free */ + SP_PARM->_mouse_eventp = PREV(prev); + result = OK; + } + } + returnCode(result); +} + +#if NCURSES_SP_FUNCS +/* grab a copy of the current mouse event */ +NCURSES_EXPORT(int) +getmouse(MEVENT * aevent) +{ + return NCURSES_SP_NAME(getmouse) (CURRENT_SCREEN, aevent); +} +#endif + +NCURSES_EXPORT(int) +NCURSES_SP_NAME(ungetmouse) (NCURSES_SP_DCLx MEVENT * aevent) +{ + int result = ERR; + + T((T_CALLED("ungetmouse(%p,%p)"), (void *) SP_PARM, (void *) aevent)); + + if (aevent != 0 && SP_PARM != 0) { + MEVENT *eventp = SP_PARM->_mouse_eventp; + + /* stick the given event in the next-free slot */ + *eventp = *aevent; + + /* bump the next-free pointer into the circular list */ + SP_PARM->_mouse_eventp = NEXT(eventp); + + /* push back the notification event on the keyboard queue */ + result = NCURSES_SP_NAME(ungetch) (NCURSES_SP_ARGx KEY_MOUSE); + } + returnCode(result); +} + +#if NCURSES_SP_FUNCS +/* enqueue a synthesized mouse event to be seen by the next wgetch() */ +NCURSES_EXPORT(int) +ungetmouse(MEVENT * aevent) +{ + return NCURSES_SP_NAME(ungetmouse) (CURRENT_SCREEN, aevent); +} +#endif + +NCURSES_EXPORT(mmask_t) +NCURSES_SP_NAME(mousemask) (NCURSES_SP_DCLx mmask_t newmask, mmask_t * oldmask) +/* set the mouse event mask */ +{ + mmask_t result = 0; + + T((T_CALLED("mousemask(%p,%#lx,%p)"), + (void *) SP_PARM, + (unsigned long) newmask, + (void *) oldmask)); + + if (SP_PARM != 0) { + if (oldmask) + *oldmask = SP_PARM->_mouse_mask; + + if (newmask || SP_PARM->_mouse_initialized) { + _nc_mouse_init(SP_PARM); + if (SP_PARM->_mouse_type != M_NONE) { + result = newmask & + (REPORT_MOUSE_POSITION + | BUTTON_ALT + | BUTTON_CTRL + | BUTTON_SHIFT + | BUTTON_PRESSED + | BUTTON_RELEASED + | BUTTON_CLICKED + | BUTTON_DOUBLE_CLICKED + | BUTTON_TRIPLE_CLICKED); + + mouse_activate(SP_PARM, (bool) (result != 0)); + + SP_PARM->_mouse_mask = result; + } + } + } + returnMMask(result); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(mmask_t) +mousemask(mmask_t newmask, mmask_t * oldmask) +{ + return NCURSES_SP_NAME(mousemask) (CURRENT_SCREEN, newmask, oldmask); +} +#endif + +NCURSES_EXPORT(bool) +wenclose(const WINDOW *win, int y, int x) +/* check to see if given window encloses given screen location */ +{ + bool result = FALSE; + + T((T_CALLED("wenclose(%p,%d,%d)"), (const void *) win, y, x)); + + if (win != 0) { + y -= win->_yoffset; + result = ((win->_begy <= y && + win->_begx <= x && + (win->_begx + win->_maxx) >= x && + (win->_begy + win->_maxy) >= y) ? TRUE : FALSE); + } + returnBool(result); +} + +NCURSES_EXPORT(int) +NCURSES_SP_NAME(mouseinterval) (NCURSES_SP_DCLx int maxclick) +/* set the maximum mouse interval within which to recognize a click */ +{ + int oldval; + + T((T_CALLED("mouseinterval(%p,%d)"), (void *) SP_PARM, maxclick)); + + if (SP_PARM != 0) { + oldval = SP_PARM->_maxclick; + if (maxclick >= 0) + SP_PARM->_maxclick = maxclick; + } else { + oldval = DEFAULT_MAXCLICK; + } + + returnCode(oldval); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +mouseinterval(int maxclick) +{ + return NCURSES_SP_NAME(mouseinterval) (CURRENT_SCREEN, maxclick); +} +#endif + +/* This may be used by other routines to ask for the existence of mouse + support */ +NCURSES_EXPORT(bool) +_nc_has_mouse(SCREEN *sp) +{ + return (((0 == sp) || (sp->_mouse_type == M_NONE)) ? FALSE : TRUE); +} + +NCURSES_EXPORT(bool) +NCURSES_SP_NAME(has_mouse) (NCURSES_SP_DCL0) +{ + return _nc_has_mouse(SP_PARM); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(bool) +has_mouse(void) +{ + return _nc_has_mouse(CURRENT_SCREEN); +} +#endif + +NCURSES_EXPORT(bool) +wmouse_trafo(const WINDOW *win, int *pY, int *pX, bool to_screen) +{ + bool result = FALSE; + + T((T_CALLED("wmouse_trafo(%p,%p,%p,%d)"), + (const void *) win, + (void *) pY, + (void *) pX, + to_screen)); + + if (win && pY && pX) { + int y = *pY; + int x = *pX; + + if (to_screen) { + y += win->_begy + win->_yoffset; + x += win->_begx; + if (wenclose(win, y, x)) + result = TRUE; + } else { + if (wenclose(win, y, x)) { + y -= (win->_begy + win->_yoffset); + x -= win->_begx; + result = TRUE; + } + } + if (result) { + *pX = x; + *pY = y; + } + } + returnBool(result); +} |