Annotation of src/usr.bin/window/win.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: win.c,v 1.5 1995/09/29 00:44:08 cgd Exp $ */
2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93";
42: #else
43: static char rcsid[] = "$NetBSD: win.c,v 1.5 1995/09/29 00:44:08 cgd Exp $";
44: #endif
45: #endif /* not lint */
46:
47: #include "defs.h"
48: #include "char.h"
49: #include <string.h>
50:
51: /*
52: * Higher level routines for dealing with windows.
53: *
54: * There are two types of windows: user window, and information window.
55: * User windows are the ones with a pty and shell. Information windows
56: * are for displaying error messages, and other information.
57: *
58: * The windows are doubly linked in overlapping order and divided into
59: * two groups: foreground and normal. Information
60: * windows are always foreground. User windows can be either.
61: * Addwin() adds a window to the list at the top of one of the two groups.
62: * Deletewin() deletes a window. Front() moves a window to the front
63: * of its group. Wwopen(), wwadd(), and wwdelete() should never be called
64: * directly.
65: */
66:
67: /*
68: * Open a user window.
69: */
70: struct ww *
71: openwin(id, row, col, nrow, ncol, nline, label, haspty, hasframe, shf, sh)
72: char *label;
73: char haspty, hasframe;
74: char *shf, **sh;
75: {
76: register struct ww *w;
77:
78: if (id < 0 && (id = findid()) < 0)
79: return 0;
80: if (row + nrow <= 0 || row > wwnrow - 1
81: || col + ncol <= 0 || col > wwncol - 1) {
82: error("Illegal window position.");
83: return 0;
84: }
85: w = wwopen(haspty ? WWO_PTY : WWO_SOCKET, nrow, ncol, row, col, nline);
86: if (w == 0) {
87: error("Can't open window: %s.", wwerror());
88: return 0;
89: }
90: w->ww_id = id;
91: window[id] = w;
92: w->ww_hasframe = hasframe;
93: w->ww_alt = w->ww_w;
94: if (label != 0 && setlabel(w, label) < 0)
95: error("No memory for label.");
96: wwcursor(w, 1);
97: /*
98: * We have to do this little maneuver to make sure
99: * addwin() puts w at the top, so we don't waste an
100: * insert and delete operation.
101: */
102: setselwin((struct ww *)0);
103: addwin(w, 0);
104: setselwin(w);
105: if (wwspawn(w, shf, sh) < 0) {
106: error("Can't execute %s: %s.", shf, wwerror());
107: closewin(w);
108: return 0;
109: }
110: return w;
111: }
112:
113: findid()
114: {
115: register i;
116:
117: for (i = 0; i < NWINDOW && window[i] != 0; i++)
118: ;
119: if (i >= NWINDOW) {
120: error("Too many windows.");
121: return -1;
122: }
123: return i;
124: }
125:
126: struct ww *
127: findselwin()
128: {
129: register struct ww *w, *s = 0;
130: register i;
131:
132: for (i = 0; i < NWINDOW; i++)
133: if ((w = window[i]) != 0 && w != selwin &&
134: (s == 0 ||
135: !isfg(w) && (w->ww_order < s->ww_order || isfg(s))))
136: s = w;
137: return s;
138: }
139:
140: /*
141: * Close a user window. Close all if w == 0.
142: */
143: closewin(w)
144: register struct ww *w;
145: {
146: char didit = 0;
147: register i;
148:
149: if (w != 0) {
150: closewin1(w);
151: didit++;
152: } else
153: for (i = 0; i < NWINDOW; i++) {
154: if ((w = window[i]) == 0)
155: continue;
156: closewin1(w);
157: didit++;
158: }
159: if (didit) {
160: if (selwin == 0)
161: if (lastselwin != 0) {
162: setselwin(lastselwin);
163: lastselwin = 0;
164: } else if (w = findselwin())
165: setselwin(w);
166: if (lastselwin == 0 && selwin)
167: if (w = findselwin())
168: lastselwin = w;
169: reframe();
170: }
171: }
172:
173: /*
174: * Open an information (display) window.
175: */
176: struct ww *
177: openiwin(nrow, label)
178: char *label;
179: {
180: register struct ww *w;
181:
182: if ((w = wwopen(0, nrow, wwncol, 2, 0, 0)) == 0)
183: return 0;
184: w->ww_mapnl = 1;
185: w->ww_hasframe = 1;
186: w->ww_nointr = 1;
187: w->ww_noupdate = 1;
188: w->ww_unctrl = 1;
189: w->ww_id = -1;
190: w->ww_center = 1;
191: (void) setlabel(w, label);
192: addwin(w, 1);
193: reframe();
194: return w;
195: }
196:
197: /*
198: * Close an information window.
199: */
200: closeiwin(w)
201: struct ww *w;
202: {
203: closewin1(w);
204: reframe();
205: }
206:
207: closewin1(w)
208: register struct ww *w;
209: {
210: if (w == selwin)
211: selwin = 0;
212: if (w == lastselwin)
213: lastselwin = 0;
214: if (w->ww_id >= 0 && w->ww_id < NWINDOW)
215: window[w->ww_id] = 0;
216: if (w->ww_label)
217: str_free(w->ww_label);
218: deletewin(w);
219: wwclose(w);
220: }
221:
222: /*
223: * Move the window to the top of its group.
224: * Don't do it if already fully visible.
225: * Wwvisible() doesn't work for tinted windows.
226: * But anything to make it faster.
227: * Always reframe() if doreframe is true.
228: */
229: front(w, doreframe)
230: register struct ww *w;
231: char doreframe;
232: {
233: if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
234: deletewin(w);
235: addwin(w, isfg(w));
236: doreframe = 1;
237: }
238: if (doreframe)
239: reframe();
240: }
241:
242: /*
243: * Add a window at the top of normal windows or foreground windows.
244: * For normal windows, we put it behind the current window.
245: */
246: addwin(w, fg)
247: register struct ww *w;
248: char fg;
249: {
250: if (fg) {
251: wwadd(w, framewin);
252: if (fgwin == framewin)
253: fgwin = w;
254: } else
255: wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
256: ? selwin : fgwin);
257: }
258:
259: /*
260: * Delete a window.
261: */
262: deletewin(w)
263: register struct ww *w;
264: {
265: if (fgwin == w)
266: fgwin = w->ww_back;
267: wwdelete(w);
268: }
269:
270: reframe()
271: {
272: register struct ww *w;
273:
274: wwunframe(framewin);
275: for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
276: if (w->ww_hasframe) {
277: wwframe(w, framewin);
278: labelwin(w);
279: }
280: }
281:
282: labelwin(w)
283: register struct ww *w;
284: {
285: int mode = w == selwin ? WWM_REV : 0;
286:
287: if (!w->ww_hasframe)
288: return;
289: if (w->ww_id >= 0) {
290: char buf[2];
291:
292: buf[0] = w->ww_id + '1';
293: buf[1] = 0;
294: wwlabel(w, framewin, 1, buf, mode);
295: }
296: if (w->ww_label) {
297: int col;
298:
299: if (w->ww_center) {
300: col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
301: col = MAX(3, col);
302: } else
303: col = 3;
304: wwlabel(w, framewin, col, w->ww_label, mode);
305: }
306: }
307:
308: stopwin(w)
309: register struct ww *w;
310: {
311: if (w->ww_pty >= 0 && w->ww_ispty && wwstoptty(w->ww_pty) < 0)
312: error("Can't stop output: %s.", wwerror());
313: else
314: w->ww_stopped = 1;
315: }
316:
317: startwin(w)
318: register struct ww *w;
319: {
320: if (w->ww_pty >= 0 && w->ww_ispty && wwstarttty(w->ww_pty) < 0)
321: error("Can't start output: %s.", wwerror());
322: else
323: w->ww_stopped = 0;
324: }
325:
326: sizewin(w, nrow, ncol)
327: register struct ww *w;
328: {
329: struct ww *back = w->ww_back;
330:
331: w->ww_alt.nr = w->ww_w.nr;
332: w->ww_alt.nc = w->ww_w.nc;
333: wwdelete(w);
334: if (wwsize(w, nrow, ncol) < 0)
335: error("Can't resize window: %s.", wwerror());
336: wwadd(w, back);
337: reframe();
338: }
339:
340: waitnl(w)
341: struct ww *w;
342: {
343: (void) waitnl1(w, "[Type any key to continue]");
344: }
345:
346: more(w, always)
347: register struct ww *w;
348: char always;
349: {
350: int c;
351: char uc = w->ww_unctrl;
352:
353: if (!always && w->ww_cur.r < w->ww_w.b - 2)
354: return 0;
355: c = waitnl1(w, "[Type escape to abort, any other key to continue]");
356: w->ww_unctrl = 0;
357: wwputs("\033E", w);
358: w->ww_unctrl = uc;
359: return c == ctrl('[') ? 2 : 1;
360: }
361:
362: waitnl1(w, prompt)
363: register struct ww *w;
364: char *prompt;
365: {
366: char uc = w->ww_unctrl;
367:
368: w->ww_unctrl = 0;
369: front(w, 0);
370: wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
371: w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */
372: wwcurtowin(w);
373: while (wwpeekc() < 0)
374: wwiomux();
375: w->ww_unctrl = uc;
376: return wwgetc();
377: }
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