diff options
Diffstat (limited to 'ncurses-5.2/ncurses/base/lib_mouse.c')
| -rw-r--r-- | ncurses-5.2/ncurses/base/lib_mouse.c | 1004 |
1 files changed, 0 insertions, 1004 deletions
diff --git a/ncurses-5.2/ncurses/base/lib_mouse.c b/ncurses-5.2/ncurses/base/lib_mouse.c deleted file mode 100644 index 33ab235..0000000 --- a/ncurses-5.2/ncurses/base/lib_mouse.c +++ /dev/null @@ -1,1004 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998,1999,2000 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> * - ****************************************************************************/ - -/* - * This module is intended to encapsulate ncurses's interface to pointing - * devices. - * - * The first method used is xterm's internal mouse-tracking facility. - * The second is Alessandro Rubini's GPM server. - * - * 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> -#include <term.h> - -#if USE_GPM_SUPPORT -#ifndef LINT /* don't need this for llib-lncurses */ -#undef buttons /* term.h defines this, and gpm uses it! */ -#include <gpm.h> -#include <linux/keyboard.h> /* defines KG_* macros */ -#endif -#endif - -MODULE_ID("$Id$") - -#define MY_TRACE TRACE_ICALLS|TRACE_IEVENT - -#define INVALID_EVENT -1 - -static int mousetype; -#define M_XTERM -1 /* use xterm's mouse tracking? */ -#define M_NONE 0 /* no mouse device */ -#define M_GPM 1 /* use GPM */ -#define M_QNX 2 /* QNX mouse on console */ -#define M_QNX_TERM 3 /* QNX mouse on pterm/xterm (using qansi-m) */ - -#if USE_GPM_SUPPORT -#ifndef LINT -static Gpm_Connect gpm_connect; -#endif -#endif - -static mmask_t eventmask; /* current event mask */ - -static bool _nc_mouse_parse(int); -static void _nc_mouse_resume(SCREEN *); -static void _nc_mouse_wrap(SCREEN *); - -/* maintain a circular list of mouse events */ - -/* The definition of the circular list size (EV_MAX), is in curses.priv.h, so - * wgetch() may refer to the size and call _nc_mouse_parse() before circular - * list overflow. - */ -static MEVENT events[EV_MAX]; /* hold the last mouse event seen */ -static MEVENT *eventp = events; /* next free slot in event queue */ -#define NEXT(ep) ((ep == events + EV_MAX - 1) ? events : ep + 1) -#define PREV(ep) ((ep == events) ? events + EV_MAX - 1 : ep - 1) - -#ifdef TRACE -static void -_trace_slot(const char *tag) -{ - MEVENT *ep; - - _tracef(tag); - - for (ep = events; ep < events + EV_MAX; ep++) - _tracef("mouse event queue slot %ld = %s", - (long) (ep - events), - _tracemouse(ep)); -} -#endif - -#ifdef USE_EMX_MOUSE - -# define TOP_ROW 0 -# define LEFT_COL 0 - -static int mouse_wfd; -static int mouse_thread; -static int mouse_activated; -static char mouse_buttons[] = -{0, 1, 3, 2}; - -# define M_FD(sp) sp->_mouse_fd - -static void -write_event(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(mouse_wfd, buf, 6, &ignore); -} - -static void -mouse_server(unsigned long ignored GCC_UNUSED) -{ - 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 (!mouse_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(mouev.fs & MOUSE_BN1_DOWN, - mouse_buttons[1], mouev.col, mouev.row); - if ((mouev.fs ^ oldstate) & MOUSE_BN2_DOWN) - write_event(mouev.fs & MOUSE_BN2_DOWN, - mouse_buttons[3], mouev.col, mouev.row); - if ((mouev.fs ^ oldstate) & MOUSE_BN3_DOWN) - write_event(mouev.fs & MOUSE_BN3_DOWN, - mouse_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); -} - -static void -server_state(const int state) -{ /* It would be nice to implement pointer-off and stop looping... */ - mouse_activated = state; -} - -#endif - -static int initialized; - -static void -initialize_mousetype(void) -{ - static const char *xterm_kmous = "\033[M"; - - /* Try gpm first, because gpm may be configured to run in xterm */ -#if USE_GPM_SUPPORT - /* GPM: initialize connection to gpm server */ - gpm_connect.eventMask = GPM_DOWN | GPM_UP; - gpm_connect.defaultMask = ~(gpm_connect.eventMask | GPM_HARD); - gpm_connect.minMod = 0; - gpm_connect.maxMod = ~((1 << KG_SHIFT) | (1 << KG_SHIFTL) | (1 << KG_SHIFTR)); - if (Gpm_Open(&gpm_connect, 0) >= 0) { /* returns the file-descriptor */ - mousetype = M_GPM; - SP->_mouse_fd = gpm_fd; - return; - } -#endif - - /* OS/2 VIO */ -#ifdef USE_EMX_MOUSE - if (!mouse_thread - && strstr(cur_term->type.term_names, "xterm") == 0 - && key_mouse) { - int handles[2]; - - if (pipe(handles) < 0) { - perror("mouse pipe error"); - return; - } else { - int rc; - - if (!mouse_buttons[0]) { - char *s = getenv("MOUSE_BUTTONS_123"); - - mouse_buttons[0] = 1; - if (s && strlen(s) >= 3) { - mouse_buttons[1] = s[0] - '0'; - mouse_buttons[2] = s[1] - '0'; - mouse_buttons[3] = s[2] - '0'; - } - } - mouse_wfd = handles[1]; - M_FD(SP) = handles[0]; - /* Needed? */ - setmode(handles[0], O_BINARY); - setmode(handles[1], O_BINARY); - /* Do not use CRT functions, we may single-threaded. */ - rc = DosCreateThread((unsigned long *) &mouse_thread, - mouse_server, 0, 0, 8192); - if (rc) { - printf("mouse thread error %d=%#x", rc, rc); - return; - } else { - mousetype = M_XTERM; - return; - } - } - } -#endif - - /* we know how to recognize mouse events under "xterm" */ - if (key_mouse != 0) { - if (!strcmp(key_mouse, xterm_kmous)) { - mousetype = M_XTERM; - return; - } - } else if (strstr(cur_term->type.term_names, "xterm") != 0) { - (void) _nc_add_to_try(&(SP->_keytry), xterm_kmous, KEY_MOUSE); - mousetype = M_XTERM; - return; - } -} - -static void -_nc_mouse_init(void) -/* initialize the mouse */ -{ - int i; - - if (!initialized) { - initialized = TRUE; - - TR(MY_TRACE, ("_nc_mouse_init() called")); - - for (i = 0; i < EV_MAX; i++) - events[i].id = INVALID_EVENT; - - initialize_mousetype(); - - T(("_nc_mouse_init() set mousetype to %d", mousetype)); - } -} - -static bool -_nc_mouse_event(SCREEN * sp GCC_UNUSED) -/* query to see if there is a pending mouse event */ -{ -#if USE_GPM_SUPPORT - /* GPM: query server for event, return TRUE if we find one */ - Gpm_Event ev; - - if (gpm_fd >= 0 - && (_nc_timed_wait(3, 0, (int *) 0) & 2) != 0 - && Gpm_GetEvent(&ev) == 1) { - eventp->id = 0; /* there's only one mouse... */ - - 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 */ - eventp = NEXT(eventp); - return (TRUE); - } -#endif - -#ifdef USE_EMX_MOUSE - if (SP->_mouse_fd >= 0 - && (_nc_timed_wait(3, 0, (int *) 0) & 2) != 0) { - 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]); - } - return TRUE; - } -#endif /* USE_EMX_MOUSE */ - - /* xterm: never have to query, mouse events are in the keyboard stream */ - return (FALSE); /* no event waiting */ -} - -static bool -_nc_mouse_inline(SCREEN * sp) -/* mouse report received in the keyboard stream -- parse its info */ -{ - TR(MY_TRACE, ("_nc_mouse_inline() called")); - - if (mousetype == M_XTERM) { - unsigned char kbuf[4]; - MEVENT *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. It always does under Linux but often - * fails to under Solaris. - */ - for (grabbed = 0; grabbed < 3; grabbed += res) { - - /* For VIO mouse we add extra bit 64 to disambiguate button-up. */ -#ifdef USE_EMX_MOUSE - res = read(M_FD(sp) >= 0 ? M_FD(sp) : sp->_ifd, &kbuf, 3); -#else - res = read(sp->_ifd, kbuf + grabbed, 3 - grabbed); -#endif - if (res == -1) - break; - } - kbuf[3] = '\0'; - - TR(TRACE_IEVENT, - ("_nc_mouse_inline sees the following xterm data: '%s'", kbuf)); - - eventp->id = 0; /* there's only one mouse... */ - - /* processing code goes here */ - eventp->bstate = 0; - switch (kbuf[0] & 0x3) { - case 0x0: - eventp->bstate = BUTTON1_PRESSED; -#ifdef USE_EMX_MOUSE - if (kbuf[0] & 0x40) - eventp->bstate = BUTTON1_RELEASED; -#endif - break; - - case 0x1: - eventp->bstate = BUTTON2_PRESSED; -#ifdef USE_EMX_MOUSE - if (kbuf[0] & 0x40) - eventp->bstate = BUTTON2_RELEASED; -#endif - break; - - case 0x2: - eventp->bstate = BUTTON3_PRESSED; -#ifdef USE_EMX_MOUSE - if (kbuf[0] & 0x40) - eventp->bstate = BUTTON3_RELEASED; -#endif - break; - - case 0x3: - /* - * Release events aren't reported for individual buttons, - * just for the button set as a whole... - */ - eventp->bstate = - (BUTTON1_RELEASED | - BUTTON2_RELEASED | - BUTTON3_RELEASED); - /* - * ...however, because there are no kinds of mouse events under - * xterm that can intervene between press and release, we can - * deduce which buttons were actually released by looking at the - * previous event. - */ - prev = PREV(eventp); - if (!(prev->bstate & BUTTON1_PRESSED)) - eventp->bstate &= ~BUTTON1_RELEASED; - if (!(prev->bstate & BUTTON2_PRESSED)) - eventp->bstate &= ~BUTTON2_RELEASED; - if (!(prev->bstate & BUTTON3_PRESSED)) - eventp->bstate &= ~BUTTON3_RELEASED; - break; - } - - 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", - _tracemouse(eventp), - (long) (eventp - events))); - - /* bump the next-free pointer into the circular list */ - eventp = NEXT(eventp); -#if 0 /* this return would be needed for QNX's mods to lib_getch.c */ - return (TRUE); -#endif - } - - return (FALSE); -} - -static void -mouse_activate(bool on) -{ - if (!on && !initialized) - return; - - _nc_mouse_init(); - - if (on) { - - switch (mousetype) { - case M_XTERM: -#if NCURSES_EXT_FUNCS - keyok(KEY_MOUSE, on); -#endif - TPUTS_TRACE("xterm mouse initialization"); -#ifdef USE_EMX_MOUSE - server_state(1); -#else - putp("\033[?1000h"); -#endif - break; -#if USE_GPM_SUPPORT - case M_GPM: - SP->_mouse_fd = gpm_fd; - break; -#endif - } - /* 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 (mousetype) { - case M_XTERM: - TPUTS_TRACE("xterm mouse deinitialization"); -#ifdef USE_EMX_MOUSE - server_state(0); -#else - putp("\033[?1000l"); -#endif - break; -#if USE_GPM_SUPPORT - case M_GPM: - break; -#endif - } - } - _nc_flush(); -} - -/************************************************************************** - * - * Device-independent code - * - **************************************************************************/ - -static bool -_nc_mouse_parse(int runcount) -/* parse a run of atomic mouse events into a gesture */ -{ - MEVENT *ep, *runp, *next, *prev = PREV(eventp); - int n; - 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 collaps 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", - _tracemouse(prev), - (long) (prev - events))); - return (prev->id >= 0) - ? ((prev->bstate & eventmask) ? TRUE : FALSE) - : FALSE; - } - - /* find the start of the run */ - runp = eventp; - for (n = runcount; n > 0; n--) { - runp = PREV(runp); - } - -#ifdef TRACE - if (_nc_tracing & TRACE_IEVENT) { - _trace_slot("before mouse press/release merge:"); - _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", - (long) (runp - events), - (long) ((eventp - events) + (EV_MAX - 1)) % EV_MAX, - runcount); - } -#endif /* TRACE */ - - /* first pass; merge press/release pairs */ - do { - merge = FALSE; - for (ep = runp; next = NEXT(ep), next != eventp; ep = next) { - if (ep->x == next->x && ep->y == next->y - && (ep->bstate & (BUTTON1_PRESSED | BUTTON2_PRESSED | BUTTON3_PRESSED)) - && (!(ep->bstate & BUTTON1_PRESSED) - == !(next->bstate & BUTTON1_RELEASED)) - && (!(ep->bstate & BUTTON2_PRESSED) - == !(next->bstate & BUTTON2_RELEASED)) - && (!(ep->bstate & BUTTON3_PRESSED) - == !(next->bstate & BUTTON3_RELEASED)) - ) { - if ((eventmask & BUTTON1_CLICKED) - && (ep->bstate & BUTTON1_PRESSED)) { - ep->bstate &= ~BUTTON1_PRESSED; - ep->bstate |= BUTTON1_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON2_CLICKED) - && (ep->bstate & BUTTON2_PRESSED)) { - ep->bstate &= ~BUTTON2_PRESSED; - ep->bstate |= BUTTON2_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON3_CLICKED) - && (ep->bstate & BUTTON3_PRESSED)) { - ep->bstate &= ~BUTTON3_PRESSED; - ep->bstate |= BUTTON3_CLICKED; - merge = TRUE; - } - if (merge) - next->id = INVALID_EVENT; - } - } - } while - (merge); - -#ifdef TRACE - if (_nc_tracing & TRACE_IEVENT) { - _trace_slot("before mouse click merge:"); - _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", - (long) (runp - events), - (long) ((eventp - events) + (EV_MAX - 1)) % EV_MAX, - runcount); - } -#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), next != 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 & - (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED)) - && (follower->bstate & - (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED))) { - if ((eventmask & BUTTON1_DOUBLE_CLICKED) - && (follower->bstate & BUTTON1_CLICKED)) { - follower->bstate &= ~BUTTON1_CLICKED; - follower->bstate |= BUTTON1_DOUBLE_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON2_DOUBLE_CLICKED) - && (follower->bstate & BUTTON2_CLICKED)) { - follower->bstate &= ~BUTTON2_CLICKED; - follower->bstate |= BUTTON2_DOUBLE_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON3_DOUBLE_CLICKED) - && (follower->bstate & BUTTON3_CLICKED)) { - follower->bstate &= ~BUTTON3_CLICKED; - follower->bstate |= BUTTON3_DOUBLE_CLICKED; - merge = TRUE; - } - if (merge) - ep->id = INVALID_EVENT; - } - - /* merge double-click events forward */ - if ((ep->bstate & - (BUTTON1_DOUBLE_CLICKED - | BUTTON2_DOUBLE_CLICKED - | BUTTON3_DOUBLE_CLICKED)) - && (follower->bstate & - (BUTTON1_CLICKED | BUTTON2_CLICKED | BUTTON3_CLICKED))) { - if ((eventmask & BUTTON1_TRIPLE_CLICKED) - && (follower->bstate & BUTTON1_CLICKED)) { - follower->bstate &= ~BUTTON1_CLICKED; - follower->bstate |= BUTTON1_TRIPLE_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON2_TRIPLE_CLICKED) - && (follower->bstate & BUTTON2_CLICKED)) { - follower->bstate &= ~BUTTON2_CLICKED; - follower->bstate |= BUTTON2_TRIPLE_CLICKED; - merge = TRUE; - } - if ((eventmask & BUTTON3_TRIPLE_CLICKED) - && (follower->bstate & BUTTON3_CLICKED)) { - follower->bstate &= ~BUTTON3_CLICKED; - follower->bstate |= BUTTON3_TRIPLE_CLICKED; - merge = TRUE; - } - if (merge) - ep->id = INVALID_EVENT; - } - } - } while - (merge); - -#ifdef TRACE - if (_nc_tracing & TRACE_IEVENT) { - _trace_slot("before mouse event queue compaction:"); - _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", - (long) (runp - events), - (long) ((eventp - events) + (EV_MAX - 1)) % EV_MAX, - runcount); - } -#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 & eventmask)) { - eventp = prev; - } -#ifdef TRACE - if (_nc_tracing & TRACE_IEVENT) { - _trace_slot("after mouse event queue compaction:"); - _tracef("_nc_mouse_parse: run starts at %ld, ends at %ld, count %d", - (long) (runp - events), - (long) ((eventp - events) + (EV_MAX - 1)) % EV_MAX, - runcount); - } - 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", - _tracemouse(ep), - (long) (ep - events))); -#endif /* TRACE */ - - /* after all this, do we have a valid event? */ - return (PREV(eventp)->id != INVALID_EVENT); -} - -static void -_nc_mouse_wrap(SCREEN * sp GCC_UNUSED) -/* release mouse -- called by endwin() before shellout/exit */ -{ - TR(MY_TRACE, ("_nc_mouse_wrap() called")); - - switch (mousetype) { - case M_XTERM: - if (eventmask) - mouse_activate(FALSE); - break; -#if USE_GPM_SUPPORT - /* GPM: pass all mouse events to next client */ - case M_GPM: - break; -#endif - } -} - -static void -_nc_mouse_resume(SCREEN * sp GCC_UNUSED) -/* re-connect to mouse -- called by doupdate() after shellout */ -{ - TR(MY_TRACE, ("_nc_mouse_resume() called")); - - /* xterm: re-enable reporting */ - if (mousetype == M_XTERM && eventmask) - mouse_activate(TRUE); - - /* GPM: reclaim our event set */ -} - -/************************************************************************** - * - * Mouse interface entry points for the API - * - **************************************************************************/ - -int -getmouse(MEVENT * aevent) -/* grab a copy of the current mouse event */ -{ - T((T_CALLED("getmouse(%p)"), aevent)); - - if (aevent && (mousetype != M_NONE)) { - /* compute the current-event pointer */ - MEVENT *prev = PREV(eventp); - - /* copy the event we find there */ - *aevent = *prev; - - TR(TRACE_IEVENT, ("getmouse: returning event %s from slot %ld", - _tracemouse(prev), - (long) (prev - events))); - - prev->id = INVALID_EVENT; /* so the queue slot becomes free */ - returnCode(OK); - } - returnCode(ERR); -} - -int -ungetmouse(MEVENT * aevent) -/* enqueue a synthesized mouse event to be seen by the next wgetch() */ -{ - /* stick the given event in the next-free slot */ - *eventp = *aevent; - - /* bump the next-free pointer into the circular list */ - eventp = NEXT(eventp); - - /* push back the notification event on the keyboard queue */ - return ungetch(KEY_MOUSE); -} - -mmask_t -mousemask(mmask_t newmask, mmask_t * oldmask) -/* set the mouse event mask */ -{ - mmask_t result = 0; - - T((T_CALLED("mousemask(%#lx,%p)"), newmask, oldmask)); - - if (oldmask) - *oldmask = eventmask; - - if (!newmask && !initialized) - returnCode(0); - - _nc_mouse_init(); - if (mousetype != M_NONE) { - eventmask = newmask & - (BUTTON_ALT | BUTTON_CTRL | BUTTON_SHIFT - | BUTTON1_PRESSED | BUTTON1_RELEASED | BUTTON1_CLICKED - | BUTTON1_DOUBLE_CLICKED | BUTTON1_TRIPLE_CLICKED - | BUTTON2_PRESSED | BUTTON2_RELEASED | BUTTON2_CLICKED - | BUTTON2_DOUBLE_CLICKED | BUTTON2_TRIPLE_CLICKED - | BUTTON3_PRESSED | BUTTON3_RELEASED | BUTTON3_CLICKED - | BUTTON3_DOUBLE_CLICKED | BUTTON3_TRIPLE_CLICKED); - - mouse_activate(eventmask != 0); - - result = eventmask; - } - - returnCode(result); -} - -bool -wenclose(const WINDOW *win, int y, int x) -/* check to see if given window encloses given screen location */ -{ - if (win) { - y -= win->_yoffset; - return ((win->_begy <= y && - win->_begx <= x && - (win->_begx + win->_maxx) >= x && - (win->_begy + win->_maxy) >= y) ? TRUE : FALSE); - } - return FALSE; -} - -int -mouseinterval(int maxclick) -/* set the maximum mouse interval within which to recognize a click */ -{ - int oldval; - - if (SP != 0) { - oldval = SP->_maxclick; - if (maxclick >= 0) - SP->_maxclick = maxclick; - } else { - oldval = DEFAULT_MAXCLICK; - } - - return (oldval); -} - -/* This may be used by other routines to ask for the existence of mouse - support */ -int -_nc_has_mouse(void) -{ - return (mousetype == M_NONE ? 0 : 1); -} - -bool -wmouse_trafo(const WINDOW *win, int *pY, int *pX, bool to_screen) -{ - bool result = FALSE; - - 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; - } - } - return (result); -} - -/* lib_mouse.c ends here */ |