xref: /netbsd-src/lib/libcurses/border.c (revision b1c86f5f087524e68db12794ee9c3e3da1ab17a0)
1 /*	$NetBSD: border.c,v 1.13 2010/02/23 19:48:26 drochner Exp $	*/
2 
3 /*
4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Julian Coleman.
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  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __RCSID("$NetBSD: border.c,v 1.13 2010/02/23 19:48:26 drochner Exp $");
35 #endif				/* not lint */
36 
37 #include <stdlib.h>
38 #include <string.h>
39 
40 #include "curses.h"
41 #include "curses_private.h"
42 
43 #ifndef _CURSES_USE_MACROS
44 
45 /*
46  * border --
47  *	Draw a border around stdscr using the specified
48  *	delimiting characters.
49  */
50 int
51 border(chtype left, chtype right, chtype top, chtype bottom, chtype topleft,
52        chtype topright, chtype botleft, chtype botright)
53 {
54 	return wborder(stdscr, left, right, top, bottom, topleft, topright,
55 	    botleft, botright);
56 }
57 
58 #endif
59 
60 /*
61  * wborder --
62  *	Draw a border around the given window using the specified delimiting
63  *	characters.
64  */
65 int
66 wborder(WINDOW *win, chtype left, chtype right, chtype top, chtype bottom,
67 	chtype topleft, chtype topright, chtype botleft, chtype botright)
68 {
69 #ifndef HAVE_WCHAR
70 	int	 endy, endx, i;
71 	__LDATA	*fp, *lp;
72 
73 	if (!(left & __CHARTEXT))
74 		left |= ACS_VLINE;
75 	if (!(right & __CHARTEXT))
76 		right |= ACS_VLINE;
77 	if (!(top & __CHARTEXT))
78 		top |= ACS_HLINE;
79 	if (!(bottom & __CHARTEXT))
80 		bottom |= ACS_HLINE;
81 	if (!(topleft & __CHARTEXT))
82 		topleft |= ACS_ULCORNER;
83 	if (!(topright & __CHARTEXT))
84 		topright |= ACS_URCORNER;
85 	if (!(botleft & __CHARTEXT))
86 		botleft |= ACS_LLCORNER;
87 	if (!(botright & __CHARTEXT))
88 		botright |= ACS_LRCORNER;
89 
90 #ifdef DEBUG
91 	__CTRACE(__CTRACE_INPUT, "wborder: left = %c, 0x%x\n",
92 	    left & __CHARTEXT, left & __ATTRIBUTES);
93 	__CTRACE(__CTRACE_INPUT, "wborder: right = %c, 0x%x\n",
94 	    right & __CHARTEXT, right & __ATTRIBUTES);
95 	__CTRACE(__CTRACE_INPUT, "wborder: top = %c, 0x%x\n",
96 	    top & __CHARTEXT, top & __ATTRIBUTES);
97 	__CTRACE(__CTRACE_INPUT, "wborder: bottom = %c, 0x%x\n",
98 	    bottom & __CHARTEXT, bottom & __ATTRIBUTES);
99 	__CTRACE(__CTRACE_INPUT, "wborder: topleft = %c, 0x%x\n",
100 	    topleft & __CHARTEXT, topleft & __ATTRIBUTES);
101 	__CTRACE(__CTRACE_INPUT, "wborder: topright = %c, 0x%x\n",
102 	    topright & __CHARTEXT, topright & __ATTRIBUTES);
103 	__CTRACE(__CTRACE_INPUT, "wborder: botleft = %c, 0x%x\n",
104 	    botleft & __CHARTEXT, botleft & __ATTRIBUTES);
105 	__CTRACE(__CTRACE_INPUT, "wborder: botright = %c, 0x%x\n",
106 	    botright & __CHARTEXT, botright & __ATTRIBUTES);
107 #endif
108 
109 	/* Merge window and background attributes */
110 	left |= (left & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
111 	left |= (left & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
112 	right |= (right & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
113 	right |= (right & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
114 	top |= (top & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
115 	top |= (top & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
116 	bottom |= (bottom & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
117 	bottom |= (bottom & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
118 	topleft |= (topleft & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
119 	topleft |= (topleft & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
120 	topright |= (topright & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
121 	topright |= (topright & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
122 	botleft |= (botleft & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
123 	botleft |= (botleft & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
124 	botright |= (botright & __COLOR) ? (win->wattr & ~__COLOR) : win->wattr;
125 	botright |= (botright & __COLOR) ? (win->battr & ~__COLOR) : win->battr;
126 
127 	endx = win->maxx - 1;
128 	endy = win->maxy - 1;
129 	fp = win->alines[0]->line;
130 	lp = win->alines[endy]->line;
131 
132 	/* Sides */
133 	for (i = 1; i < endy; i++) {
134 		win->alines[i]->line[0].ch = (wchar_t) left & __CHARTEXT;
135 		win->alines[i]->line[0].attr = (attr_t) left & __ATTRIBUTES;
136 		win->alines[i]->line[endx].ch = (wchar_t) right & __CHARTEXT;
137 		win->alines[i]->line[endx].attr = (attr_t) right & __ATTRIBUTES;
138 	}
139 	for (i = 1; i < endx; i++) {
140 		fp[i].ch = (wchar_t) top & __CHARTEXT;
141 		fp[i].attr = (attr_t) top & __ATTRIBUTES;
142 		lp[i].ch = (wchar_t) bottom & __CHARTEXT;
143 		lp[i].attr = (attr_t) bottom & __ATTRIBUTES;
144 	}
145 
146 	/* Corners */
147 	if (!(win->maxx == LINES && win->maxy == COLS &&
148 	    (win->flags & __SCROLLOK) && (win->flags & __SCROLLWIN))) {
149 		fp[0].ch = (wchar_t) topleft & __CHARTEXT;
150 		fp[0].attr = (attr_t) topleft & __ATTRIBUTES;
151 		fp[endx].ch = (wchar_t) topright & __CHARTEXT;
152 		fp[endx].attr = (attr_t) topright & __ATTRIBUTES;
153 		lp[0].ch = (wchar_t) botleft & __CHARTEXT;
154 		lp[0].attr = (attr_t) botleft & __ATTRIBUTES;
155 		lp[endx].ch = (wchar_t) botright & __CHARTEXT;
156 		lp[endx].attr = (attr_t) botright & __ATTRIBUTES;
157 	}
158 	__touchwin(win);
159 	return (OK);
160 #else /* HAVE_WCHAR */
161 	cchar_t ls, rs, ts, bs, tl, tr, bl, br;
162 	cchar_t *lsp, *rsp, *tsp, *bsp, *tlp, *trp, *blp, *brp;
163 
164 #define S(in, out) \
165 	if (in & __CHARTEXT) { \
166 		__cursesi_chtype_to_cchar(in, &out); \
167 		out##p = &out; \
168 	} else \
169 		out##p = NULL
170 	S(left, ls);
171 	S(right, rs);
172 	S(top, ts);
173 	S(bottom, bs);
174 	S(topleft, tl);
175 	S(topright, tr);
176 	S(botleft, bl);
177 	S(botright, br);
178 #undef S
179 	return wborder_set(win, lsp, rsp, tsp, bsp, tlp, trp, blp, brp);
180 #endif /* HAVE_WCHAR */
181 }
182 
183 int border_set(const cchar_t *ls, const cchar_t *rs, const cchar_t *ts,
184 	   const cchar_t *bs, const cchar_t *tl, const cchar_t *tr,
185 	   const cchar_t *bl, const cchar_t *br)
186 {
187 #ifndef HAVE_WCHAR
188 	return ERR;
189 #else
190 	return wborder_set(stdscr, ls, rs, ts, bs, tl, tr, bl, br);
191 #endif /* HAVE_WCHAR */
192 }
193 
194 int wborder_set(WINDOW *win, const cchar_t *ls, const cchar_t *rs,
195 		const cchar_t *ts, const cchar_t *bs,
196 		const cchar_t *tl, const cchar_t *tr,
197 		const cchar_t *bl, const cchar_t *br)
198 {
199 #ifndef HAVE_WCHAR
200 	return ERR;
201 #else
202 	int	 endy, endx, i, j, k, cw, pcw, tlcw, blcw, trcw, brcw;
203 	cchar_t left, right, bottom, top, topleft, topright, botleft, botright;
204 	nschar_t *np, *tnp;
205 
206 	if ( ls && wcwidth( ls->vals[ 0 ]))
207 		memcpy( &left, ls, sizeof( cchar_t ));
208 	else
209 		memcpy( &left, WACS_VLINE, sizeof( cchar_t ));
210 	if ( rs && wcwidth( rs->vals[ 0 ]))
211 		memcpy( &right, rs, sizeof( cchar_t ));
212 	else
213 		memcpy( &right, WACS_VLINE, sizeof( cchar_t ));
214 	if ( ts && wcwidth( ts->vals[ 0 ]))
215 		memcpy( &top, ts, sizeof( cchar_t ));
216 	else
217 		memcpy( &top, WACS_HLINE, sizeof( cchar_t ));
218 	if ( bs && wcwidth( bs->vals[ 0 ]))
219 		memcpy( &bottom, bs, sizeof( cchar_t ));
220 	else
221 		memcpy( &bottom, WACS_HLINE, sizeof( cchar_t ));
222 	if ( tl && wcwidth( tl->vals[ 0 ]))
223 		memcpy( &topleft, tl, sizeof( cchar_t ));
224 	else
225 		memcpy( &topleft, WACS_ULCORNER, sizeof( cchar_t ));
226 	if ( tr && wcwidth( tr->vals[ 0 ]))
227 		memcpy( &topright, tr, sizeof( cchar_t ));
228 	else
229 		memcpy( &topright, WACS_URCORNER, sizeof( cchar_t ));
230 	if ( bl && wcwidth( bl->vals[ 0 ]))
231 		memcpy( &botleft, bl, sizeof( cchar_t ));
232 	else
233 		memcpy( &botleft, WACS_LLCORNER, sizeof( cchar_t ));
234 	if ( br && wcwidth( br->vals[ 0 ]))
235 		memcpy( &botright, br, sizeof( cchar_t ));
236 	else
237 		memcpy( &botright, WACS_LRCORNER, sizeof( cchar_t ));
238 
239 #ifdef DEBUG
240 	__CTRACE(__CTRACE_INPUT, "wborder_set: left = %c, 0x%x\n",
241 	    left.vals[0], left.attributes );
242 	__CTRACE(__CTRACE_INPUT, "wborder_set: right = %c, 0x%x\n",
243 	    right.vals[0], right.attributes );
244 	__CTRACE(__CTRACE_INPUT, "wborder_set: top = %c, 0x%x\n",
245 	    top.vals[0], top.attributes );
246 	__CTRACE(__CTRACE_INPUT, "wborder_set: bottom = %c, 0x%x\n",
247 	    bottom.vals[0], bottom.attributes );
248 	__CTRACE(__CTRACE_INPUT, "wborder_set: topleft = %c, 0x%x\n",
249 	    topleft.vals[0], topleft.attributes );
250 	__CTRACE(__CTRACE_INPUT, "wborder_set: topright = %c, 0x%x\n",
251 	    topright.vals[0], topright.attributes );
252 	__CTRACE(__CTRACE_INPUT, "wborder_set: botleft = %c, 0x%x\n",
253 	    botleft.vals[0], botleft.attributes );
254 	__CTRACE(__CTRACE_INPUT, "wborder_set: botright = %c, 0x%x\n",
255 	    botright.vals[0], botright.attributes );
256 #endif
257 
258 	/* Merge window attributes */
259 	left.attributes |= (left.attributes & __COLOR) ?
260 		(win->wattr & ~__COLOR) : win->wattr;
261 	right.attributes |= (right.attributes & __COLOR) ?
262 		(win->wattr & ~__COLOR) : win->wattr;
263 	top.attributes |= (top.attributes & __COLOR) ?
264 		(win->wattr & ~__COLOR) : win->wattr;
265 	bottom.attributes |= (bottom.attributes & __COLOR) ?
266 		(win->wattr & ~__COLOR) : win->wattr;
267 	topleft.attributes |= (topleft.attributes & __COLOR) ?
268 		(win->wattr & ~__COLOR) : win->wattr;
269 	topright.attributes |= (topright.attributes & __COLOR) ?
270 		(win->wattr & ~__COLOR) : win->wattr;
271 	botleft.attributes |= (botleft.attributes & __COLOR) ?
272 		(win->wattr & ~__COLOR) : win->wattr;
273 	botright.attributes |= (botright.attributes & __COLOR) ?
274 		(win->wattr & ~__COLOR) : win->wattr;
275 
276 	endx = win->maxx - 1;
277 	endy = win->maxy - 1;
278 
279 	/* Sides */
280 	for (i = 1; i < endy; i++) {
281 		/* left border */
282 		cw = wcwidth( left.vals[ 0 ]);
283 		if (cw < 0)
284 			cw = 1;
285 		for ( j = 0; j < cw; j++ ) {
286 			win->alines[i]->line[j].ch = left.vals[ 0 ];
287 			win->alines[i]->line[j].attr = left.attributes;
288 			np = win->alines[i]->line[j].nsp;
289 			if (np) {
290 				while ( np ) {
291 					tnp = np->next;
292 					free( np );
293 					np = tnp;
294 				}
295 				win->alines[i]->line[j].nsp = NULL;
296 			}
297 			if ( j )
298 				SET_WCOL( win->alines[i]->line[j], -j );
299 			else {
300 				SET_WCOL( win->alines[i]->line[j], cw );
301 				if ( left.elements > 1 ) {
302 					for (k = 1; k < left.elements; k++) {
303 						np = (nschar_t *)malloc(sizeof(nschar_t));
304 						if (!np)
305 							return ERR;
306 						np->ch = left.vals[ k ];
307 						np->next = win->alines[i]->line[j].nsp;
308 						win->alines[i]->line[j].nsp
309 							= np;
310 					}
311 				}
312 			}
313 		}
314 		for ( j = cw; WCOL( win->alines[i]->line[j]) < 0; j++ ) {
315 #ifdef DEBUG
316 			__CTRACE(__CTRACE_INPUT,
317 			    "wborder_set: clean out partial char[%d]", j);
318 #endif /* DEBUG */
319 			win->alines[i]->line[j].ch = ( wchar_t )btowc(win->bch);
320 			if (_cursesi_copy_nsp(win->bnsp,
321 					      &win->alines[i]->line[j]) == ERR)
322 				return ERR;
323 			SET_WCOL( win->alines[i]->line[j], 1 );
324 		}
325 		/* right border */
326 		cw = wcwidth( right.vals[ 0 ]);
327 		if (cw < 0)
328 			cw = 1;
329 		pcw = WCOL( win->alines[i]->line[endx - cw]);
330 		for ( j = endx - cw + 1; j <= endx; j++ ) {
331 			win->alines[i]->line[j].ch = right.vals[ 0 ];
332 			win->alines[i]->line[j].attr = right.attributes;
333 			np = win->alines[i]->line[j].nsp;
334 			if (np) {
335 				while ( np ) {
336 					tnp = np->next;
337 					free( np );
338 					np = tnp;
339 				}
340 				win->alines[i]->line[j].nsp = NULL;
341 			}
342 			if ( j == endx - cw + 1 ) {
343 				SET_WCOL( win->alines[i]->line[j], cw );
344 				if ( right.elements > 1 ) {
345 					for (k = 1; k < right.elements; k++) {
346 						np = (nschar_t *)malloc(sizeof(nschar_t));
347 						if (!np)
348 							return ERR;
349 						np->ch = right.vals[ k ];
350 						np->next = win->alines[i]->line[j].nsp;
351 						win->alines[i]->line[j].nsp
352 							= np;
353 					}
354 				}
355 			} else
356 				SET_WCOL( win->alines[i]->line[j],
357 					endx - cw + 1 - j );
358 		}
359 		if ( pcw != 1 ) {
360 #ifdef DEBUG
361 			__CTRACE(__CTRACE_INPUT,
362 			    "wborder_set: clean out partial chars[%d:%d]",
363 			    endx - cw + pcw, endx - cw );
364 #endif /* DEBUG */
365 			k = pcw < 0 ? endx -cw + pcw : endx - cw;
366 			for ( j = endx - cw; j >= k; j-- ) {
367 				win->alines[i]->line[j].ch
368 					= (wchar_t)btowc(win->bch);
369 				if (_cursesi_copy_nsp(win->bnsp,
370 					       &win->alines[i]->line[j]) == ERR)
371 					return ERR;
372 				win->alines[i]->line[j].attr = win->battr;
373 				SET_WCOL( win->alines[i]->line[j], 1 );
374 			}
375 		}
376 	}
377 	tlcw = wcwidth( topleft.vals[ 0 ]);
378 	if (tlcw < 0)
379 		tlcw = 1;
380 	blcw = wcwidth( botleft.vals[ 0 ]);
381 	if (blcw < 0)
382 		blcw = 1;
383 	trcw = wcwidth( topright.vals[ 0 ]);
384 	if (trcw < 0)
385 		trcw = 1;
386 	brcw = wcwidth( botright.vals[ 0 ]);
387 	if (brcw < 0)
388 		brcw = 1;
389 	/* upper border */
390 	cw = wcwidth( top.vals[ 0 ]);
391 	if (cw < 0)
392 		cw = 1;
393 	for (i = tlcw; i <= min( endx - cw, endx - trcw ); i += cw ) {
394 		for ( j = 0; j < cw; j++ ) {
395 			win->alines[ 0 ]->line[i + j].ch = top.vals[ 0 ];
396 			win->alines[ 0 ]->line[i + j].attr = top.attributes;
397 			np = win->alines[ 0 ]->line[i + j].nsp;
398 			if (np) {
399 				while ( np ) {
400 					tnp = np->next;
401 					free( np );
402 					np = tnp;
403 				}
404 				win->alines[ 0 ]->line[i + j].nsp = NULL;
405 			}
406 			if ( j )
407 				SET_WCOL( win->alines[ 0 ]->line[ i + j ], -j );
408 			else {
409 				SET_WCOL( win->alines[ 0 ]->line[ i + j ], cw );
410 				if ( top.elements > 1 ) {
411 					for ( k = 1; k < top.elements; k++ ) {
412 						np = (nschar_t *)malloc(sizeof(nschar_t));
413 						if (!np)
414 							return ERR;
415 						np->ch = top.vals[ k ];
416 						np->next = win->alines[0]->line[i + j].nsp;
417 						win->alines[0]->line[i + j].nsp
418 							= np;
419 					}
420 				}
421 			}
422 		}
423 	}
424 	while ( i <= endx - trcw ) {
425 		win->alines[0]->line[i].ch =
426 			( wchar_t )btowc(( int ) win->bch );
427 		if (_cursesi_copy_nsp(win->bnsp,
428 				      &win->alines[0]->line[i]) == ERR)
429 			return ERR;
430 		win->alines[ 0 ]->line[ i ].attr = win->battr;
431 		SET_WCOL( win->alines[ 0 ]->line[ i ], 1 );
432 		i++;
433 	}
434 	/* lower border */
435 	for (i = blcw; i <= min( endx - cw, endx - brcw ); i += cw ) {
436 		for ( j = 0; j < cw; j++ ) {
437 			win->alines[ endy ]->line[i + j].ch = bottom.vals[ 0 ];
438 			win->alines[endy]->line[i + j].attr = bottom.attributes;
439 			np = win->alines[ endy ]->line[i + j].nsp;
440 			if (np) {
441 				while ( np ) {
442 					tnp = np->next;
443 					free( np );
444 					np = tnp;
445 				}
446 				win->alines[ endy ]->line[i + j].nsp = NULL;
447 			}
448 			if ( j )
449 				SET_WCOL( win->alines[endy]->line[i + j], -j);
450 			else {
451 				SET_WCOL( win->alines[endy]->line[i + j], cw );
452 				if ( bottom.elements > 1 ) {
453 					for ( k = 1; k < bottom.elements;
454 							k++ ) {
455 						if ( !( np = ( nschar_t *)malloc( sizeof( nschar_t ))))
456 							return ERR;
457 						np->ch = bottom.vals[ k ];
458 						np->next = win->alines[endy]->line[i + j].nsp;
459 						win->alines[endy]->line[i + j].nsp = np;
460 					}
461 				}
462 			}
463 		}
464 	}
465 	while ( i <= endx - brcw ) {
466 		win->alines[endy]->line[i].ch =
467 			(wchar_t)btowc((int) win->bch );
468 		if (_cursesi_copy_nsp(win->bnsp,
469 				      &win->alines[endy]->line[i]) == ERR)
470 			return ERR;
471 		win->alines[ endy ]->line[ i ].attr = win->battr;
472 		SET_WCOL( win->alines[ endy ]->line[ i ], 1 );
473 		i++;
474 	}
475 
476 	/* Corners */
477 	if (!(win->maxx == LINES && win->maxy == COLS &&
478 		(win->flags & __SCROLLOK) && (win->flags & __SCROLLWIN))) {
479 		for ( i = 0; i < tlcw; i++ ) {
480 			win->alines[ 0 ]->line[i].ch = topleft.vals[ 0 ];
481 			win->alines[ 0 ]->line[i].attr = topleft.attributes;
482 			np = win->alines[ 0 ]->line[i].nsp;
483 			if (np) {
484 				while ( np ) {
485 					tnp = np->next;
486 					free( np );
487 					np = tnp;
488 				}
489 				win->alines[ 0 ]->line[i].nsp = NULL;
490 			}
491 			if ( i )
492 				SET_WCOL( win->alines[ 0 ]->line[ i ], -i );
493 			else {
494 				SET_WCOL( win->alines[ 0 ]->line[ i ], tlcw );
495 				if ( topleft.elements > 1 ) {
496 					for ( k = 1; k < topleft.elements;
497 							k++ ) {
498 						np = (nschar_t *)malloc(sizeof(nschar_t));
499 						if (!np)
500 							return ERR;
501 						np->ch = topleft.vals[ k ];
502 						np->next = win->alines[ 0 ]->line[i].nsp;
503 						win->alines[ 0 ]->line[i].nsp
504 							= np;
505 					}
506 				}
507 			}
508 		}
509 		for ( i = endx - trcw + 1; i <= endx; i++ ) {
510 			win->alines[ 0 ]->line[i].ch = topright.vals[ 0 ];
511 			win->alines[ 0 ]->line[i].attr = topright.attributes;
512 			np = win->alines[ 0 ]->line[i].nsp;
513 			if (np) {
514 				while ( np ) {
515 					tnp = np->next;
516 					free( np );
517 					np = tnp;
518 				}
519 				win->alines[ 0 ]->line[i].nsp = NULL;
520 			}
521 			if ( i == endx - trcw + 1 ) {
522 				SET_WCOL( win->alines[ 0 ]->line[ i ], trcw );
523 				if ( topright.elements > 1 ) {
524 					for ( k = 1; k < topright.elements;
525 							k++ ) {
526 						np = (nschar_t *)malloc(sizeof(nschar_t));
527 						if (!np)
528 							return ERR;
529 						np->ch = topright.vals[ k ];
530 						np->next = win->alines[0]->line[i].nsp;
531 						win->alines[ 0 ]->line[i].nsp
532 							= np;
533 					}
534 				}
535 			} else
536 				SET_WCOL( win->alines[ 0 ]->line[ i ],
537 					  endx - trcw + 1 - i );
538 		}
539 		for ( i = 0; i < blcw; i++ ) {
540 			win->alines[ endy ]->line[i].ch = botleft.vals[ 0 ];
541 			win->alines[ endy ]->line[i].attr = botleft.attributes;
542 			np = win->alines[ endy ]->line[i].nsp;
543 			if (np) {
544 				while ( np ) {
545 					tnp = np->next;
546 					free( np );
547 					np = tnp;
548 				}
549 				win->alines[ endy ]->line[i].nsp = NULL;
550 			}
551 			if ( i )
552 				SET_WCOL( win->alines[endy]->line[i], -i );
553 			else {
554 				SET_WCOL( win->alines[endy]->line[i], blcw );
555 				if ( botleft.elements > 1 ) {
556 					for ( k = 1; k < botleft.elements;
557 							k++ ) {
558 						np = (nschar_t *)malloc(sizeof(nschar_t));
559 						if (!np)
560 							return ERR;
561 						np->ch = botleft.vals[ k ];
562 						np->next = win->alines[endy]->line[i].nsp;
563 						win->alines[endy]->line[i].nsp
564 							= np;
565 					}
566 				}
567 			}
568 		}
569 		for ( i = endx - brcw + 1; i <= endx; i++ ) {
570 			win->alines[ endy ]->line[i].ch = botright.vals[ 0 ];
571 			win->alines[ endy ]->line[i].attr = botright.attributes;
572 			np = win->alines[ endy ]->line[i].nsp;
573 			if (np) {
574 				while ( np ) {
575 					tnp = np->next;
576 					free( np );
577 					np = tnp;
578 				}
579 				win->alines[ endy ]->line[i].nsp = NULL;
580 			}
581 			if ( i == endx - brcw + 1 ) {
582 				SET_WCOL( win->alines[ endy ]->line[ i ],
583 					  brcw );
584 				if ( botright.elements > 1 ) {
585 					for ( k = 1; k < botright.elements; k++ ) {
586 						np = (nschar_t *)malloc(sizeof(nschar_t));
587 						if (!np)
588 							return ERR;
589 						np->ch = botright.vals[ k ];
590 						np->next = win->alines[endy]->line[i].nsp;
591 						win->alines[endy]->line[i].nsp
592 							= np;
593 					}
594 				}
595 			} else
596 				SET_WCOL( win->alines[ endy ]->line[ i ],
597 					endx - brcw + 1 - i );
598 		}
599 	}
600 	__touchwin(win);
601 	return (OK);
602 #endif /* HAVE_WCHAR */
603 }
604