372 lines
8.2 KiB
C
372 lines
8.2 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93";
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static char rcsid[] = "@(#)$FreeBSD$";
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#endif /* not lint */
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#include "defs.h"
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#include "char.h"
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/*
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* Higher level routines for dealing with windows.
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*
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* There are two types of windows: user window, and information window.
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* User windows are the ones with a pty and shell. Information windows
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* are for displaying error messages, and other information.
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*
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* The windows are doubly linked in overlapping order and divided into
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* two groups: foreground and normal. Information
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* windows are always foreground. User windows can be either.
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* Addwin() adds a window to the list at the top of one of the two groups.
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* Deletewin() deletes a window. Front() moves a window to the front
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* of its group. Wwopen(), wwadd(), and wwdelete() should never be called
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* directly.
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*/
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/*
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* Open a user window.
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*/
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struct ww *
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openwin(id, row, col, nrow, ncol, nline, label, haspty, hasframe, shf, sh)
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char *label;
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char haspty, hasframe;
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char *shf, **sh;
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{
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register struct ww *w;
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if (id < 0 && (id = findid()) < 0)
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return 0;
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if (row + nrow <= 0 || row > wwnrow - 1
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|| col + ncol <= 0 || col > wwncol - 1) {
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error("Illegal window position.");
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return 0;
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}
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w = wwopen(haspty ? WWO_PTY : WWO_SOCKET, nrow, ncol, row, col, nline);
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if (w == 0) {
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error("Can't open window: %s.", wwerror());
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return 0;
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}
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w->ww_id = id;
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window[id] = w;
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w->ww_hasframe = hasframe;
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w->ww_alt = w->ww_w;
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if (label != 0 && setlabel(w, label) < 0)
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error("No memory for label.");
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wwcursor(w, 1);
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/*
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* We have to do this little maneuver to make sure
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* addwin() puts w at the top, so we don't waste an
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* insert and delete operation.
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*/
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setselwin((struct ww *)0);
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addwin(w, 0);
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setselwin(w);
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if (wwspawn(w, shf, sh) < 0) {
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error("Can't execute %s: %s.", shf, wwerror());
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closewin(w);
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return 0;
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}
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return w;
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}
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findid()
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{
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register i;
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for (i = 0; i < NWINDOW && window[i] != 0; i++)
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;
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if (i >= NWINDOW) {
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error("Too many windows.");
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return -1;
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}
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return i;
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}
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struct ww *
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findselwin()
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{
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register struct ww *w, *s = 0;
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register i;
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for (i = 0; i < NWINDOW; i++)
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if ((w = window[i]) != 0 && w != selwin &&
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(s == 0 ||
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!isfg(w) && (w->ww_order < s->ww_order || isfg(s))))
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s = w;
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return s;
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}
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/*
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* Close a user window. Close all if w == 0.
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*/
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closewin(w)
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register struct ww *w;
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{
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char didit = 0;
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register i;
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if (w != 0) {
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closewin1(w);
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didit++;
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} else
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for (i = 0; i < NWINDOW; i++) {
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if ((w = window[i]) == 0)
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continue;
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closewin1(w);
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didit++;
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}
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if (didit) {
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if (selwin == 0)
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if (lastselwin != 0) {
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setselwin(lastselwin);
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lastselwin = 0;
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} else if (w = findselwin())
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setselwin(w);
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if (lastselwin == 0 && selwin)
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if (w = findselwin())
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lastselwin = w;
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reframe();
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}
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}
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/*
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* Open an information (display) window.
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*/
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struct ww *
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openiwin(nrow, label)
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char *label;
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{
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register struct ww *w;
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if ((w = wwopen(0, nrow, wwncol, 2, 0, 0)) == 0)
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return 0;
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w->ww_mapnl = 1;
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w->ww_hasframe = 1;
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w->ww_nointr = 1;
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w->ww_noupdate = 1;
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w->ww_unctrl = 1;
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w->ww_id = -1;
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w->ww_center = 1;
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(void) setlabel(w, label);
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addwin(w, 1);
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reframe();
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return w;
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}
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/*
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* Close an information window.
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*/
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closeiwin(w)
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struct ww *w;
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{
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closewin1(w);
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reframe();
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}
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closewin1(w)
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register struct ww *w;
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{
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if (w == selwin)
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selwin = 0;
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if (w == lastselwin)
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lastselwin = 0;
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if (w->ww_id >= 0 && w->ww_id < NWINDOW)
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window[w->ww_id] = 0;
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if (w->ww_label)
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str_free(w->ww_label);
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deletewin(w);
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wwclose(w);
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}
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/*
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* Move the window to the top of its group.
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* Don't do it if already fully visible.
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* Wwvisible() doesn't work for tinted windows.
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* But anything to make it faster.
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* Always reframe() if doreframe is true.
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*/
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front(w, doreframe)
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register struct ww *w;
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char doreframe;
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{
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if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
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deletewin(w);
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addwin(w, isfg(w));
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doreframe = 1;
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}
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if (doreframe)
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reframe();
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}
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/*
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* Add a window at the top of normal windows or foreground windows.
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* For normal windows, we put it behind the current window.
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*/
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addwin(w, fg)
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register struct ww *w;
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char fg;
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{
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if (fg) {
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wwadd(w, framewin);
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if (fgwin == framewin)
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fgwin = w;
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} else
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wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
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? selwin : fgwin);
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}
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/*
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* Delete a window.
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*/
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deletewin(w)
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register struct ww *w;
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{
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if (fgwin == w)
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fgwin = w->ww_back;
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wwdelete(w);
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}
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reframe()
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{
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register struct ww *w;
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wwunframe(framewin);
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for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
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if (w->ww_hasframe) {
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wwframe(w, framewin);
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labelwin(w);
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}
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}
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labelwin(w)
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register struct ww *w;
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{
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int mode = w == selwin ? WWM_REV : 0;
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if (!w->ww_hasframe)
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return;
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if (w->ww_id >= 0) {
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char buf[2];
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buf[0] = w->ww_id + '1';
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buf[1] = 0;
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wwlabel(w, framewin, 1, buf, mode);
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}
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if (w->ww_label) {
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int col;
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if (w->ww_center) {
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col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
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col = MAX(3, col);
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} else
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col = 3;
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wwlabel(w, framewin, col, w->ww_label, mode);
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}
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}
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stopwin(w)
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register struct ww *w;
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{
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if (w->ww_pty >= 0 && w->ww_ispty && wwstoptty(w->ww_pty) < 0)
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error("Can't stop output: %s.", wwerror());
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else
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w->ww_stopped = 1;
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}
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startwin(w)
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register struct ww *w;
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{
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if (w->ww_pty >= 0 && w->ww_ispty && wwstarttty(w->ww_pty) < 0)
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error("Can't start output: %s.", wwerror());
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else
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w->ww_stopped = 0;
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}
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sizewin(w, nrow, ncol)
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register struct ww *w;
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{
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struct ww *back = w->ww_back;
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w->ww_alt.nr = w->ww_w.nr;
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w->ww_alt.nc = w->ww_w.nc;
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wwdelete(w);
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if (wwsize(w, nrow, ncol) < 0)
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error("Can't resize window: %s.", wwerror());
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wwadd(w, back);
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reframe();
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}
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waitnl(w)
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struct ww *w;
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{
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(void) waitnl1(w, "[Type any key to continue]");
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}
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more(w, always)
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register struct ww *w;
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char always;
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{
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int c;
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char uc = w->ww_unctrl;
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if (!always && w->ww_cur.r < w->ww_w.b - 2)
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return 0;
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c = waitnl1(w, "[Type escape to abort, any other key to continue]");
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w->ww_unctrl = 0;
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wwputs("\033E", w);
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w->ww_unctrl = uc;
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return c == ctrl('[') ? 2 : 1;
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}
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waitnl1(w, prompt)
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register struct ww *w;
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char *prompt;
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{
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char uc = w->ww_unctrl;
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w->ww_unctrl = 0;
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front(w, 0);
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wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
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w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */
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wwcurtowin(w);
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while (wwpeekc() < 0)
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wwiomux();
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w->ww_unctrl = uc;
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return wwgetc();
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}
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