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

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)win.c      3.14 4/24/85";
        !             3: #endif
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 1983 Regents of the University of California,
        !             7:  * All rights reserved.  Redistribution permitted subject to
        !             8:  * the terms of the Berkeley Software License Agreement.
        !             9:  */
        !            10: 
        !            11: #include "defs.h"
        !            12: #include "char.h"
        !            13: 
        !            14: /*
        !            15:  * Higher level routines for dealing with windows.
        !            16:  *
        !            17:  * There are two types of windows: user window, and information window.
        !            18:  * User windows are the ones with a pty and shell.  Information windows
        !            19:  * are for displaying error messages, and other information.
        !            20:  *
        !            21:  * The windows are doubly linked in overlapping order and divided into
        !            22:  * two groups: foreground and normal.  Information
        !            23:  * windows are always foreground.  User windows can be either.
        !            24:  * Addwin() adds a window to the list at the top of one of the two groups.
        !            25:  * Deletewin() deletes a window.  Front() moves a window to the front
        !            26:  * of its group.  Wwopen(), wwadd(), and wwdelete() should never be called
        !            27:  * directly.
        !            28:  */
        !            29: 
        !            30: /*
        !            31:  * Open a user window.
        !            32:  */
        !            33: struct ww *
        !            34: openwin(id, row, col, nrow, ncol, nline, label, haspty, hasframe, shf, sh)
        !            35: char *label;
        !            36: char haspty, hasframe;
        !            37: char *shf, **sh;
        !            38: {
        !            39:        register struct ww *w;
        !            40: 
        !            41:        if (id < 0 && (id = findid()) < 0)
        !            42:                return 0;
        !            43:        if (row + nrow <= 0 || row > wwnrow - 1
        !            44:            || col + ncol <= 0 || col > wwncol - 1) {
        !            45:                error("Illegal window position.");
        !            46:                return 0;
        !            47:        }
        !            48:        w = wwopen(haspty ? WWO_PTY : WWO_SOCKET, nrow, ncol, row, col, nline);
        !            49:        if (w == 0) {
        !            50:                error("Can't open window: %s.", wwerror());
        !            51:                return 0;
        !            52:        }
        !            53:        w->ww_id = id;
        !            54:        window[id] = w;
        !            55:        w->ww_hasframe = hasframe;
        !            56:        w->ww_alt = w->ww_w;
        !            57:        if (label != 0 && setlabel(w, label) < 0)
        !            58:                error("No memory for label.");
        !            59:        wwcursor(w, 1);
        !            60:        /*
        !            61:         * We have to do this little maneuver to make sure
        !            62:         * addwin() puts w at the top, so we don't waste an
        !            63:         * insert and delete operation.
        !            64:         */
        !            65:        setselwin((struct ww *)0);
        !            66:        addwin(w, 0);
        !            67:        setselwin(w);
        !            68:        wwupdate();
        !            69:        wwflush();
        !            70:        if (wwspawn(w, shf, sh) < 0) {
        !            71:                error("Can't execute %s: %s.", shf, wwerror());
        !            72:                c_close(w);
        !            73:                return 0;
        !            74:        }
        !            75:        return w;
        !            76: }
        !            77: 
        !            78: findid()
        !            79: {
        !            80:        register i;
        !            81: 
        !            82:        for (i = 0; i < NWINDOW && window[i] != 0; i++)
        !            83:                ;
        !            84:        if (i >= NWINDOW) {
        !            85:                error("Too many windows.");
        !            86:                return -1;
        !            87:        }
        !            88:        return i;
        !            89: }
        !            90: 
        !            91: /*
        !            92:  * Close a user window.
        !            93:  * May leave selwin == 0.
        !            94:  */
        !            95: closewin(w)
        !            96: register struct ww *w;
        !            97: {
        !            98:        if (w == selwin)
        !            99:                selwin = 0;
        !           100:        if (w == lastselwin)
        !           101:                lastselwin = 0;
        !           102:        if (w->ww_id >= 0 && w->ww_id < NWINDOW)
        !           103:                window[w->ww_id] = 0;
        !           104:        if (w->ww_label)
        !           105:                str_free(w->ww_label);
        !           106:        deletewin(w);
        !           107:        wwclose(w);
        !           108: }
        !           109: 
        !           110: /*
        !           111:  * Open an information (display) window.
        !           112:  */
        !           113: struct ww *
        !           114: openiwin(nrow, label)
        !           115: char *label;
        !           116: {
        !           117:        register struct ww *w;
        !           118: 
        !           119:        if ((w = wwopen(0, nrow, wwncol, 2, 0, 0)) == 0)
        !           120:                return 0;
        !           121:        w->ww_mapnl = 1;
        !           122:        w->ww_hasframe = 1;
        !           123:        w->ww_nointr = 1;
        !           124:        w->ww_noupdate = 1;
        !           125:        w->ww_unctrl = 1;
        !           126:        w->ww_id = -1;
        !           127:        w->ww_center = 1;
        !           128:        (void) setlabel(w, label);
        !           129:        addwin(w, 1);
        !           130:        reframe();
        !           131:        wwupdate();
        !           132:        return w;
        !           133: }
        !           134: 
        !           135: /*
        !           136:  * Close an information window.
        !           137:  */
        !           138: closeiwin(w)
        !           139: struct ww *w;
        !           140: {
        !           141:        closewin(w);
        !           142:        reframe();
        !           143: }
        !           144: 
        !           145: /*
        !           146:  * Move the window to the top of its group.
        !           147:  * Don't do it if already fully visible.
        !           148:  * Wwvisible() doesn't work for tinted windows.
        !           149:  * But anything to make it faster.
        !           150:  * Always reframe() if doreframe is true.
        !           151:  */
        !           152: front(w, doreframe)
        !           153: register struct ww *w;
        !           154: char doreframe;
        !           155: {
        !           156:        if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
        !           157:                deletewin(w);
        !           158:                addwin(w, isfg(w));
        !           159:                doreframe = 1;
        !           160:        }
        !           161:        if (doreframe)
        !           162:                reframe();
        !           163: }
        !           164: 
        !           165: /*
        !           166:  * Add a window at the top of normal windows or foreground windows.
        !           167:  * For normal windows, we put it behind the current window.
        !           168:  */
        !           169: addwin(w, fg)
        !           170: register struct ww *w;
        !           171: char fg;
        !           172: {
        !           173:        if (fg) {
        !           174:                wwadd(w, framewin);
        !           175:                if (fgwin == framewin)
        !           176:                        fgwin = w;
        !           177:        } else
        !           178:                wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
        !           179:                                ? selwin : fgwin);
        !           180: }
        !           181: 
        !           182: /*
        !           183:  * Delete a window.
        !           184:  */
        !           185: deletewin(w)
        !           186: register struct ww *w;
        !           187: {
        !           188:        if (fgwin == w)
        !           189:                fgwin = w->ww_back;
        !           190:        wwdelete(w);
        !           191: }
        !           192: 
        !           193: reframe()
        !           194: {
        !           195:        register struct ww *w;
        !           196: 
        !           197:        wwunframe(framewin);
        !           198:        for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
        !           199:                if (w->ww_hasframe) {
        !           200:                        wwframe(w, framewin);
        !           201:                        labelwin(w);
        !           202:                }
        !           203: }
        !           204: 
        !           205: labelwin(w)
        !           206: register struct ww *w;
        !           207: {
        !           208:        int mode = w == selwin ? WWM_REV : 0;
        !           209: 
        !           210:        if (!w->ww_hasframe)
        !           211:                return;
        !           212:        if (w->ww_id >= 0) {
        !           213:                char buf[2];
        !           214: 
        !           215:                buf[0] = w->ww_id + '1';
        !           216:                buf[1] = 0;
        !           217:                wwlabel(w, framewin, 1, buf, mode);
        !           218:        }
        !           219:        if (w->ww_label) {
        !           220:                int col;
        !           221: 
        !           222:                if (w->ww_center) {
        !           223:                        col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
        !           224:                        col = MAX(3, col);
        !           225:                } else
        !           226:                        col = 3;
        !           227:                wwlabel(w, framewin, col, w->ww_label, mode);
        !           228:        }
        !           229: }
        !           230: 
        !           231: stopwin(w)
        !           232:        register struct ww *w;
        !           233: {
        !           234:        w->ww_stopped = 1;
        !           235:        if (w->ww_pty >= 0 && w->ww_ispty)
        !           236:                (void) ioctl(w->ww_pty, (int)TIOCSTOP, (char *)0);
        !           237: }
        !           238: 
        !           239: startwin(w)
        !           240:        register struct ww *w;
        !           241: {
        !           242:        w->ww_stopped = 0;
        !           243:        if (w->ww_pty >= 0 && w->ww_ispty)
        !           244:                (void) ioctl(w->ww_pty, (int)TIOCSTART, (char *)0);
        !           245: }
        !           246: 
        !           247: sizewin(w, nrow, ncol)
        !           248: register struct ww *w;
        !           249: {
        !           250:        struct ww *back = w->ww_back;
        !           251: 
        !           252:        w->ww_alt.nr = w->ww_w.nr;
        !           253:        w->ww_alt.nc = w->ww_w.nc;
        !           254:        wwdelete(w);
        !           255:        if (wwsize(w, nrow, ncol) < 0)
        !           256:                error("Can't resize window: %s.", wwerror());
        !           257:        wwadd(w, back);
        !           258:        reframe();
        !           259: }
        !           260: 
        !           261: waitnl(w)
        !           262: struct ww *w;
        !           263: {
        !           264:        (void) waitnl1(w, "[Type any key to continue]");
        !           265: }
        !           266: 
        !           267: more(w, always)
        !           268: register struct ww *w;
        !           269: char always;
        !           270: {
        !           271:        int c;
        !           272:        char uc = w->ww_unctrl;
        !           273: 
        !           274:        if (!always && w->ww_cur.r < w->ww_w.b - 2)
        !           275:                return 0;
        !           276:        c = waitnl1(w, "[Type escape to abort, any other key to continue]");
        !           277:        w->ww_unctrl = 0;
        !           278:        wwputs("\033E", w);
        !           279:        w->ww_unctrl = uc;
        !           280:        return c == ctrl([) ? 2 : 1;
        !           281: }
        !           282: 
        !           283: waitnl1(w, prompt)
        !           284: register struct ww *w;
        !           285: char *prompt;
        !           286: {
        !           287:        char uc = w->ww_unctrl;
        !           288: 
        !           289:        w->ww_unctrl = 0;
        !           290:        front(w, 0);
        !           291:        wwprintf(w, "\033Y%c%c\033p%s\033q ",
        !           292:                w->ww_w.nr - 1 + ' ', ' ', prompt);     /* print on last line */
        !           293:        wwcurtowin(w);
        !           294:        while (wwpeekc() < 0)
        !           295:                wwiomux();
        !           296:        w->ww_unctrl = uc;
        !           297:        return wwgetc();
        !           298: }

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