Return to win.c CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / ucb / window

Annotation of 43BSDTahoe/ucb/window/win.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)win.c      3.20 (Berkeley) 6/29/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: #include "defs.h"
        !            23: #include "char.h"
        !            24: 
        !            25: /*
        !            26:  * Higher level routines for dealing with windows.
        !            27:  *
        !            28:  * There are two types of windows: user window, and information window.
        !            29:  * User windows are the ones with a pty and shell.  Information windows
        !            30:  * are for displaying error messages, and other information.
        !            31:  *
        !            32:  * The windows are doubly linked in overlapping order and divided into
        !            33:  * two groups: foreground and normal.  Information
        !            34:  * windows are always foreground.  User windows can be either.
        !            35:  * Addwin() adds a window to the list at the top of one of the two groups.
        !            36:  * Deletewin() deletes a window.  Front() moves a window to the front
        !            37:  * of its group.  Wwopen(), wwadd(), and wwdelete() should never be called
        !            38:  * directly.
        !            39:  */
        !            40: 
        !            41: /*
        !            42:  * Open a user window.
        !            43:  */
        !            44: struct ww *
        !            45: openwin(id, row, col, nrow, ncol, nline, label, haspty, hasframe, shf, sh)
        !            46: char *label;
        !            47: char haspty, hasframe;
        !            48: char *shf, **sh;
        !            49: {
        !            50:        register struct ww *w;
        !            51: 
        !            52:        if (id < 0 && (id = findid()) < 0)
        !            53:                return 0;
        !            54:        if (row + nrow <= 0 || row > wwnrow - 1
        !            55:            || col + ncol <= 0 || col > wwncol - 1) {
        !            56:                error("Illegal window position.");
        !            57:                return 0;
        !            58:        }
        !            59:        w = wwopen(haspty ? WWO_PTY : WWO_SOCKET, nrow, ncol, row, col, nline);
        !            60:        if (w == 0) {
        !            61:                error("Can't open window: %s.", wwerror());
        !            62:                return 0;
        !            63:        }
        !            64:        w->ww_id = id;
        !            65:        window[id] = w;
        !            66:        w->ww_hasframe = hasframe;
        !            67:        w->ww_alt = w->ww_w;
        !            68:        if (label != 0 && setlabel(w, label) < 0)
        !            69:                error("No memory for label.");
        !            70:        wwcursor(w, 1);
        !            71:        /*
        !            72:         * We have to do this little maneuver to make sure
        !            73:         * addwin() puts w at the top, so we don't waste an
        !            74:         * insert and delete operation.
        !            75:         */
        !            76:        setselwin((struct ww *)0);
        !            77:        addwin(w, 0);
        !            78:        setselwin(w);
        !            79:        wwupdate();
        !            80:        wwflush();
        !            81:        if (wwspawn(w, shf, sh) < 0) {
        !            82:                error("Can't execute %s: %s.", shf, wwerror());
        !            83:                closewin(w);
        !            84:                return 0;
        !            85:        }
        !            86:        return w;
        !            87: }
        !            88: 
        !            89: findid()
        !            90: {
        !            91:        register i;
        !            92: 
        !            93:        for (i = 0; i < NWINDOW && window[i] != 0; i++)
        !            94:                ;
        !            95:        if (i >= NWINDOW) {
        !            96:                error("Too many windows.");
        !            97:                return -1;
        !            98:        }
        !            99:        return i;
        !           100: }
        !           101: 
        !           102: struct ww *
        !           103: findselwin()
        !           104: {
        !           105:        register struct ww *w, *s = 0;
        !           106:        register i;
        !           107: 
        !           108:        for (i = 0; i < NWINDOW; i++)
        !           109:                if ((w = window[i]) != 0 && w != selwin &&
        !           110:                    (s == 0 ||
        !           111:                     !isfg(w) && (w->ww_order < s->ww_order || isfg(s))))
        !           112:                        s = w;
        !           113:        return s;
        !           114: }
        !           115: 
        !           116: /*
        !           117:  * Close a user window.  Close all if w == 0.
        !           118:  */
        !           119: closewin(w)
        !           120: register struct ww *w;
        !           121: {
        !           122:        char didit = 0;
        !           123:        register i;
        !           124: 
        !           125:        if (w != 0) {
        !           126:                closewin1(w);
        !           127:                didit++;
        !           128:        } else
        !           129:                for (i = 0; i < NWINDOW; i++) {
        !           130:                        if ((w = window[i]) == 0)
        !           131:                                continue;
        !           132:                        closewin1(w);
        !           133:                        didit++;
        !           134:                }
        !           135:        if (didit) {
        !           136:                if (selwin == 0)
        !           137:                        if (lastselwin != 0) {
        !           138:                                setselwin(lastselwin);
        !           139:                                lastselwin = 0;
        !           140:                        } else if (w = findselwin())
        !           141:                                setselwin(w);
        !           142:                if (lastselwin == 0 && selwin)
        !           143:                        if (w = findselwin())
        !           144:                                lastselwin = w;
        !           145:                reframe();
        !           146:        }
        !           147: }
        !           148: 
        !           149: /*
        !           150:  * Open an information (display) window.
        !           151:  */
        !           152: struct ww *
        !           153: openiwin(nrow, label)
        !           154: char *label;
        !           155: {
        !           156:        register struct ww *w;
        !           157: 
        !           158:        if ((w = wwopen(0, nrow, wwncol, 2, 0, 0)) == 0)
        !           159:                return 0;
        !           160:        w->ww_mapnl = 1;
        !           161:        w->ww_hasframe = 1;
        !           162:        w->ww_nointr = 1;
        !           163:        w->ww_noupdate = 1;
        !           164:        w->ww_unctrl = 1;
        !           165:        w->ww_id = -1;
        !           166:        w->ww_center = 1;
        !           167:        (void) setlabel(w, label);
        !           168:        addwin(w, 1);
        !           169:        reframe();
        !           170:        wwupdate();
        !           171:        return w;
        !           172: }
        !           173: 
        !           174: /*
        !           175:  * Close an information window.
        !           176:  */
        !           177: closeiwin(w)
        !           178: struct ww *w;
        !           179: {
        !           180:        closewin1(w);
        !           181:        reframe();
        !           182: }
        !           183: 
        !           184: closewin1(w)
        !           185: register struct ww *w;
        !           186: {
        !           187:        if (w == selwin)
        !           188:                selwin = 0;
        !           189:        if (w == lastselwin)
        !           190:                lastselwin = 0;
        !           191:        if (w->ww_id >= 0 && w->ww_id < NWINDOW)
        !           192:                window[w->ww_id] = 0;
        !           193:        if (w->ww_label)
        !           194:                str_free(w->ww_label);
        !           195:        deletewin(w);
        !           196:        wwclose(w);
        !           197: }
        !           198: 
        !           199: /*
        !           200:  * Move the window to the top of its group.
        !           201:  * Don't do it if already fully visible.
        !           202:  * Wwvisible() doesn't work for tinted windows.
        !           203:  * But anything to make it faster.
        !           204:  * Always reframe() if doreframe is true.
        !           205:  */
        !           206: front(w, doreframe)
        !           207: register struct ww *w;
        !           208: char doreframe;
        !           209: {
        !           210:        if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
        !           211:                deletewin(w);
        !           212:                addwin(w, isfg(w));
        !           213:                doreframe = 1;
        !           214:        }
        !           215:        if (doreframe)
        !           216:                reframe();
        !           217: }
        !           218: 
        !           219: /*
        !           220:  * Add a window at the top of normal windows or foreground windows.
        !           221:  * For normal windows, we put it behind the current window.
        !           222:  */
        !           223: addwin(w, fg)
        !           224: register struct ww *w;
        !           225: char fg;
        !           226: {
        !           227:        if (fg) {
        !           228:                wwadd(w, framewin);
        !           229:                if (fgwin == framewin)
        !           230:                        fgwin = w;
        !           231:        } else
        !           232:                wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
        !           233:                                ? selwin : fgwin);
        !           234: }
        !           235: 
        !           236: /*
        !           237:  * Delete a window.
        !           238:  */
        !           239: deletewin(w)
        !           240: register struct ww *w;
        !           241: {
        !           242:        if (fgwin == w)
        !           243:                fgwin = w->ww_back;
        !           244:        wwdelete(w);
        !           245: }
        !           246: 
        !           247: reframe()
        !           248: {
        !           249:        register struct ww *w;
        !           250: 
        !           251:        wwunframe(framewin);
        !           252:        for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
        !           253:                if (w->ww_hasframe) {
        !           254:                        wwframe(w, framewin);
        !           255:                        labelwin(w);
        !           256:                }
        !           257: }
        !           258: 
        !           259: labelwin(w)
        !           260: register struct ww *w;
        !           261: {
        !           262:        int mode = w == selwin ? WWM_REV : 0;
        !           263: 
        !           264:        if (!w->ww_hasframe)
        !           265:                return;
        !           266:        if (w->ww_id >= 0) {
        !           267:                char buf[2];
        !           268: 
        !           269:                buf[0] = w->ww_id + '1';
        !           270:                buf[1] = 0;
        !           271:                wwlabel(w, framewin, 1, buf, mode);
        !           272:        }
        !           273:        if (w->ww_label) {
        !           274:                int col;
        !           275: 
        !           276:                if (w->ww_center) {
        !           277:                        col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
        !           278:                        col = MAX(3, col);
        !           279:                } else
        !           280:                        col = 3;
        !           281:                wwlabel(w, framewin, col, w->ww_label, mode);
        !           282:        }
        !           283: }
        !           284: 
        !           285: stopwin(w)
        !           286:        register struct ww *w;
        !           287: {
        !           288:        w->ww_stopped = 1;
        !           289:        if (w->ww_pty >= 0 && w->ww_ispty)
        !           290:                (void) ioctl(w->ww_pty, TIOCSTOP, (char *)0);
        !           291: }
        !           292: 
        !           293: startwin(w)
        !           294:        register struct ww *w;
        !           295: {
        !           296:        w->ww_stopped = 0;
        !           297:        if (w->ww_pty >= 0 && w->ww_ispty)
        !           298:                (void) ioctl(w->ww_pty, TIOCSTART, (char *)0);
        !           299: }
        !           300: 
        !           301: sizewin(w, nrow, ncol)
        !           302: register struct ww *w;
        !           303: {
        !           304:        struct ww *back = w->ww_back;
        !           305: 
        !           306:        w->ww_alt.nr = w->ww_w.nr;
        !           307:        w->ww_alt.nc = w->ww_w.nc;
        !           308:        wwdelete(w);
        !           309:        if (wwsize(w, nrow, ncol) < 0)
        !           310:                error("Can't resize window: %s.", wwerror());
        !           311:        wwadd(w, back);
        !           312:        reframe();
        !           313: }
        !           314: 
        !           315: waitnl(w)
        !           316: struct ww *w;
        !           317: {
        !           318:        (void) waitnl1(w, "[Type any key to continue]");
        !           319: }
        !           320: 
        !           321: more(w, always)
        !           322: register struct ww *w;
        !           323: char always;
        !           324: {
        !           325:        int c;
        !           326:        char uc = w->ww_unctrl;
        !           327: 
        !           328:        if (!always && w->ww_cur.r < w->ww_w.b - 2)
        !           329:                return 0;
        !           330:        c = waitnl1(w, "[Type escape to abort, any other key to continue]");
        !           331:        w->ww_unctrl = 0;
        !           332:        wwputs("\033E", w);
        !           333:        w->ww_unctrl = uc;
        !           334:        return c == ctrl('[') ? 2 : 1;
        !           335: }
        !           336: 
        !           337: waitnl1(w, prompt)
        !           338: register struct ww *w;
        !           339: char *prompt;
        !           340: {
        !           341:        char uc = w->ww_unctrl;
        !           342: 
        !           343:        w->ww_unctrl = 0;
        !           344:        front(w, 0);
        !           345:        wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
        !           346:                w->ww_w.nr - 1 + ' ', ' ', prompt);     /* print on last line */
        !           347:        wwcurtowin(w);
        !           348:        while (wwpeekc() < 0)
        !           349:                wwiomux();
        !           350:        w->ww_unctrl = uc;
        !           351:        return wwgetc();
        !           352: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.