xref: /minix/lib/libcurses/border.c (revision 84d9c625)
1 /*	$NetBSD: border.c,v 1.15 2013/05/05 14:23:16 jdc 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 1.15 2013/05/05 14:23:16 jdc 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
border(chtype left,chtype right,chtype top,chtype bottom,chtype topleft,chtype topright,chtype botleft,chtype botright)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
wborder(WINDOW * win,chtype left,chtype right,chtype top,chtype bottom,chtype topleft,chtype topright,chtype botleft,chtype botright)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, def) \
165 	if (in & __CHARTEXT) { \
166 		__cursesi_chtype_to_cchar(in, &out); \
167 	} else { \
168 		memcpy(&out, def, sizeof(cchar_t)); \
169 		out.attributes |= in & __ATTRIBUTES; \
170 	} \
171 	out##p = &out;
172 
173 	S(left, ls, WACS_VLINE);
174 	S(right, rs, WACS_VLINE);
175 	S(top, ts, WACS_HLINE);
176 	S(bottom, bs, WACS_HLINE);
177 	S(topleft, tl, WACS_ULCORNER);
178 	S(topright, tr, WACS_URCORNER);
179 	S(botleft, bl, WACS_LLCORNER);
180 	S(botright, br, WACS_LRCORNER);
181 #undef S
182 	return wborder_set(win, lsp, rsp, tsp, bsp, tlp, trp, blp, brp);
183 #endif /* HAVE_WCHAR */
184 }
185 
border_set(const cchar_t * ls,const cchar_t * rs,const cchar_t * ts,const cchar_t * bs,const cchar_t * tl,const cchar_t * tr,const cchar_t * bl,const cchar_t * br)186 int border_set(const cchar_t *ls, const cchar_t *rs, const cchar_t *ts,
187 	   const cchar_t *bs, const cchar_t *tl, const cchar_t *tr,
188 	   const cchar_t *bl, const cchar_t *br)
189 {
190 #ifndef HAVE_WCHAR
191 	return ERR;
192 #else
193 	return wborder_set(stdscr, ls, rs, ts, bs, tl, tr, bl, br);
194 #endif /* HAVE_WCHAR */
195 }
196 
wborder_set(WINDOW * win,const cchar_t * ls,const cchar_t * rs,const cchar_t * ts,const cchar_t * bs,const cchar_t * tl,const cchar_t * tr,const cchar_t * bl,const cchar_t * br)197 int wborder_set(WINDOW *win, const cchar_t *ls, const cchar_t *rs,
198 		const cchar_t *ts, const cchar_t *bs,
199 		const cchar_t *tl, const cchar_t *tr,
200 		const cchar_t *bl, const cchar_t *br)
201 {
202 #ifndef HAVE_WCHAR
203 	return ERR;
204 #else
205 	int	 endy, endx, i, j, k, cw, pcw, tlcw, blcw, trcw, brcw;
206 	cchar_t left, right, bottom, top, topleft, topright, botleft, botright;
207 	nschar_t *np, *tnp;
208 
209 	if ( ls && wcwidth( ls->vals[ 0 ]))
210 		memcpy( &left, ls, sizeof( cchar_t ));
211 	else
212 		memcpy( &left, WACS_VLINE, sizeof( cchar_t ));
213 	if ( rs && wcwidth( rs->vals[ 0 ]))
214 		memcpy( &right, rs, sizeof( cchar_t ));
215 	else
216 		memcpy( &right, WACS_VLINE, sizeof( cchar_t ));
217 	if ( ts && wcwidth( ts->vals[ 0 ]))
218 		memcpy( &top, ts, sizeof( cchar_t ));
219 	else
220 		memcpy( &top, WACS_HLINE, sizeof( cchar_t ));
221 	if ( bs && wcwidth( bs->vals[ 0 ]))
222 		memcpy( &bottom, bs, sizeof( cchar_t ));
223 	else
224 		memcpy( &bottom, WACS_HLINE, sizeof( cchar_t ));
225 	if ( tl && wcwidth( tl->vals[ 0 ]))
226 		memcpy( &topleft, tl, sizeof( cchar_t ));
227 	else
228 		memcpy( &topleft, WACS_ULCORNER, sizeof( cchar_t ));
229 	if ( tr && wcwidth( tr->vals[ 0 ]))
230 		memcpy( &topright, tr, sizeof( cchar_t ));
231 	else
232 		memcpy( &topright, WACS_URCORNER, sizeof( cchar_t ));
233 	if ( bl && wcwidth( bl->vals[ 0 ]))
234 		memcpy( &botleft, bl, sizeof( cchar_t ));
235 	else
236 		memcpy( &botleft, WACS_LLCORNER, sizeof( cchar_t ));
237 	if ( br && wcwidth( br->vals[ 0 ]))
238 		memcpy( &botright, br, sizeof( cchar_t ));
239 	else
240 		memcpy( &botright, WACS_LRCORNER, sizeof( cchar_t ));
241 
242 #ifdef DEBUG
243 	__CTRACE(__CTRACE_INPUT, "wborder_set: left = %c, 0x%x\n",
244 	    left.vals[0], left.attributes );
245 	__CTRACE(__CTRACE_INPUT, "wborder_set: right = %c, 0x%x\n",
246 	    right.vals[0], right.attributes );
247 	__CTRACE(__CTRACE_INPUT, "wborder_set: top = %c, 0x%x\n",
248 	    top.vals[0], top.attributes );
249 	__CTRACE(__CTRACE_INPUT, "wborder_set: bottom = %c, 0x%x\n",
250 	    bottom.vals[0], bottom.attributes );
251 	__CTRACE(__CTRACE_INPUT, "wborder_set: topleft = %c, 0x%x\n",
252 	    topleft.vals[0], topleft.attributes );
253 	__CTRACE(__CTRACE_INPUT, "wborder_set: topright = %c, 0x%x\n",
254 	    topright.vals[0], topright.attributes );
255 	__CTRACE(__CTRACE_INPUT, "wborder_set: botleft = %c, 0x%x\n",
256 	    botleft.vals[0], botleft.attributes );
257 	__CTRACE(__CTRACE_INPUT, "wborder_set: botright = %c, 0x%x\n",
258 	    botright.vals[0], botright.attributes );
259 #endif
260 
261 	/* Merge window attributes */
262 	left.attributes |= (left.attributes & __COLOR) ?
263 		(win->wattr & ~__COLOR) : win->wattr;
264 	left.attributes |= (left.attributes & __COLOR) ?
265 		(win->battr & ~__COLOR) : win->battr;
266 	right.attributes |= (right.attributes & __COLOR) ?
267 		(win->wattr & ~__COLOR) : win->wattr;
268 	right.attributes |= (right.attributes & __COLOR) ?
269 		(win->battr & ~__COLOR) : win->battr;
270 	top.attributes |= (top.attributes & __COLOR) ?
271 		(win->wattr & ~__COLOR) : win->wattr;
272 	top.attributes |= (top.attributes & __COLOR) ?
273 		(win->battr & ~__COLOR) : win->battr;
274 	bottom.attributes |= (bottom.attributes & __COLOR) ?
275 		(win->wattr & ~__COLOR) : win->wattr;
276 	bottom.attributes |= (bottom.attributes & __COLOR) ?
277 		(win->battr & ~__COLOR) : win->battr;
278 	topleft.attributes |= (topleft.attributes & __COLOR) ?
279 		(win->wattr & ~__COLOR) : win->wattr;
280 	topleft.attributes |= (topleft.attributes & __COLOR) ?
281 		(win->battr & ~__COLOR) : win->battr;
282 	topright.attributes |= (topright.attributes & __COLOR) ?
283 		(win->wattr & ~__COLOR) : win->wattr;
284 	topright.attributes |= (topright.attributes & __COLOR) ?
285 		(win->battr & ~__COLOR) : win->battr;
286 	botleft.attributes |= (botleft.attributes & __COLOR) ?
287 		(win->wattr & ~__COLOR) : win->wattr;
288 	botleft.attributes |= (botleft.attributes & __COLOR) ?
289 		(win->battr & ~__COLOR) : win->battr;
290 	botright.attributes |= (botright.attributes & __COLOR) ?
291 		(win->wattr & ~__COLOR) : win->wattr;
292 	botright.attributes |= (botright.attributes & __COLOR) ?
293 		(win->battr & ~__COLOR) : win->battr;
294 
295 	endx = win->maxx - 1;
296 	endy = win->maxy - 1;
297 
298 	/* Sides */
299 	for (i = 1; i < endy; i++) {
300 		/* left border */
301 		cw = wcwidth( left.vals[ 0 ]);
302 		if (cw < 0)
303 			cw = 1;
304 		for ( j = 0; j < cw; j++ ) {
305 			win->alines[i]->line[j].ch = left.vals[ 0 ];
306 			win->alines[i]->line[j].attr = left.attributes;
307 			np = win->alines[i]->line[j].nsp;
308 			if (np) {
309 				while ( np ) {
310 					tnp = np->next;
311 					free( np );
312 					np = tnp;
313 				}
314 				win->alines[i]->line[j].nsp = NULL;
315 			}
316 			if ( j )
317 				SET_WCOL( win->alines[i]->line[j], -j );
318 			else {
319 				SET_WCOL( win->alines[i]->line[j], cw );
320 				if ( left.elements > 1 ) {
321 					for (k = 1; k < left.elements; k++) {
322 						np = (nschar_t *)malloc(sizeof(nschar_t));
323 						if (!np)
324 							return ERR;
325 						np->ch = left.vals[ k ];
326 						np->next = win->alines[i]->line[j].nsp;
327 						win->alines[i]->line[j].nsp
328 							= np;
329 					}
330 				}
331 			}
332 		}
333 		for ( j = cw; WCOL( win->alines[i]->line[j]) < 0; j++ ) {
334 #ifdef DEBUG
335 			__CTRACE(__CTRACE_INPUT,
336 			    "wborder_set: clean out partial char[%d]", j);
337 #endif /* DEBUG */
338 			win->alines[i]->line[j].ch = ( wchar_t )btowc(win->bch);
339 			if (_cursesi_copy_nsp(win->bnsp,
340 					      &win->alines[i]->line[j]) == ERR)
341 				return ERR;
342 			SET_WCOL( win->alines[i]->line[j], 1 );
343 		}
344 		/* right border */
345 		cw = wcwidth( right.vals[ 0 ]);
346 		if (cw < 0)
347 			cw = 1;
348 		pcw = WCOL( win->alines[i]->line[endx - cw]);
349 		for ( j = endx - cw + 1; j <= endx; j++ ) {
350 			win->alines[i]->line[j].ch = right.vals[ 0 ];
351 			win->alines[i]->line[j].attr = right.attributes;
352 			np = win->alines[i]->line[j].nsp;
353 			if (np) {
354 				while ( np ) {
355 					tnp = np->next;
356 					free( np );
357 					np = tnp;
358 				}
359 				win->alines[i]->line[j].nsp = NULL;
360 			}
361 			if ( j == endx - cw + 1 ) {
362 				SET_WCOL( win->alines[i]->line[j], cw );
363 				if ( right.elements > 1 ) {
364 					for (k = 1; k < right.elements; k++) {
365 						np = (nschar_t *)malloc(sizeof(nschar_t));
366 						if (!np)
367 							return ERR;
368 						np->ch = right.vals[ k ];
369 						np->next = win->alines[i]->line[j].nsp;
370 						win->alines[i]->line[j].nsp
371 							= np;
372 					}
373 				}
374 			} else
375 				SET_WCOL( win->alines[i]->line[j],
376 					endx - cw + 1 - j );
377 		}
378 		if ( pcw != 1 ) {
379 #ifdef DEBUG
380 			__CTRACE(__CTRACE_INPUT,
381 			    "wborder_set: clean out partial chars[%d:%d]",
382 			    endx - cw + pcw, endx - cw );
383 #endif /* DEBUG */
384 			k = pcw < 0 ? endx -cw + pcw : endx - cw;
385 			for ( j = endx - cw; j >= k; j-- ) {
386 				win->alines[i]->line[j].ch
387 					= (wchar_t)btowc(win->bch);
388 				if (_cursesi_copy_nsp(win->bnsp,
389 					       &win->alines[i]->line[j]) == ERR)
390 					return ERR;
391 				win->alines[i]->line[j].attr = win->battr;
392 				SET_WCOL( win->alines[i]->line[j], 1 );
393 			}
394 		}
395 	}
396 	tlcw = wcwidth( topleft.vals[ 0 ]);
397 	if (tlcw < 0)
398 		tlcw = 1;
399 	blcw = wcwidth( botleft.vals[ 0 ]);
400 	if (blcw < 0)
401 		blcw = 1;
402 	trcw = wcwidth( topright.vals[ 0 ]);
403 	if (trcw < 0)
404 		trcw = 1;
405 	brcw = wcwidth( botright.vals[ 0 ]);
406 	if (brcw < 0)
407 		brcw = 1;
408 	/* upper border */
409 	cw = wcwidth( top.vals[ 0 ]);
410 	if (cw < 0)
411 		cw = 1;
412 	for (i = tlcw; i <= min( endx - cw, endx - trcw ); i += cw ) {
413 		for ( j = 0; j < cw; j++ ) {
414 			win->alines[ 0 ]->line[i + j].ch = top.vals[ 0 ];
415 			win->alines[ 0 ]->line[i + j].attr = top.attributes;
416 			np = win->alines[ 0 ]->line[i + j].nsp;
417 			if (np) {
418 				while ( np ) {
419 					tnp = np->next;
420 					free( np );
421 					np = tnp;
422 				}
423 				win->alines[ 0 ]->line[i + j].nsp = NULL;
424 			}
425 			if ( j )
426 				SET_WCOL( win->alines[ 0 ]->line[ i + j ], -j );
427 			else {
428 				SET_WCOL( win->alines[ 0 ]->line[ i + j ], cw );
429 				if ( top.elements > 1 ) {
430 					for ( k = 1; k < top.elements; k++ ) {
431 						np = (nschar_t *)malloc(sizeof(nschar_t));
432 						if (!np)
433 							return ERR;
434 						np->ch = top.vals[ k ];
435 						np->next = win->alines[0]->line[i + j].nsp;
436 						win->alines[0]->line[i + j].nsp
437 							= np;
438 					}
439 				}
440 			}
441 		}
442 	}
443 	while ( i <= endx - trcw ) {
444 		win->alines[0]->line[i].ch =
445 			( wchar_t )btowc(( int ) win->bch );
446 		if (_cursesi_copy_nsp(win->bnsp,
447 				      &win->alines[0]->line[i]) == ERR)
448 			return ERR;
449 		win->alines[ 0 ]->line[ i ].attr = win->battr;
450 		SET_WCOL( win->alines[ 0 ]->line[ i ], 1 );
451 		i++;
452 	}
453 	/* lower border */
454 	for (i = blcw; i <= min( endx - cw, endx - brcw ); i += cw ) {
455 		for ( j = 0; j < cw; j++ ) {
456 			win->alines[ endy ]->line[i + j].ch = bottom.vals[ 0 ];
457 			win->alines[endy]->line[i + j].attr = bottom.attributes;
458 			np = win->alines[ endy ]->line[i + j].nsp;
459 			if (np) {
460 				while ( np ) {
461 					tnp = np->next;
462 					free( np );
463 					np = tnp;
464 				}
465 				win->alines[ endy ]->line[i + j].nsp = NULL;
466 			}
467 			if ( j )
468 				SET_WCOL( win->alines[endy]->line[i + j], -j);
469 			else {
470 				SET_WCOL( win->alines[endy]->line[i + j], cw );
471 				if ( bottom.elements > 1 ) {
472 					for ( k = 1; k < bottom.elements;
473 							k++ ) {
474 						if ( !( np = ( nschar_t *)malloc( sizeof( nschar_t ))))
475 							return ERR;
476 						np->ch = bottom.vals[ k ];
477 						np->next = win->alines[endy]->line[i + j].nsp;
478 						win->alines[endy]->line[i + j].nsp = np;
479 					}
480 				}
481 			}
482 		}
483 	}
484 	while ( i <= endx - brcw ) {
485 		win->alines[endy]->line[i].ch =
486 			(wchar_t)btowc((int) win->bch );
487 		if (_cursesi_copy_nsp(win->bnsp,
488 				      &win->alines[endy]->line[i]) == ERR)
489 			return ERR;
490 		win->alines[ endy ]->line[ i ].attr = win->battr;
491 		SET_WCOL( win->alines[ endy ]->line[ i ], 1 );
492 		i++;
493 	}
494 
495 	/* Corners */
496 	if (!(win->maxx == LINES && win->maxy == COLS &&
497 		(win->flags & __SCROLLOK) && (win->flags & __SCROLLWIN))) {
498 		for ( i = 0; i < tlcw; i++ ) {
499 			win->alines[ 0 ]->line[i].ch = topleft.vals[ 0 ];
500 			win->alines[ 0 ]->line[i].attr = topleft.attributes;
501 			np = win->alines[ 0 ]->line[i].nsp;
502 			if (np) {
503 				while ( np ) {
504 					tnp = np->next;
505 					free( np );
506 					np = tnp;
507 				}
508 				win->alines[ 0 ]->line[i].nsp = NULL;
509 			}
510 			if ( i )
511 				SET_WCOL( win->alines[ 0 ]->line[ i ], -i );
512 			else {
513 				SET_WCOL( win->alines[ 0 ]->line[ i ], tlcw );
514 				if ( topleft.elements > 1 ) {
515 					for ( k = 1; k < topleft.elements;
516 							k++ ) {
517 						np = (nschar_t *)malloc(sizeof(nschar_t));
518 						if (!np)
519 							return ERR;
520 						np->ch = topleft.vals[ k ];
521 						np->next = win->alines[ 0 ]->line[i].nsp;
522 						win->alines[ 0 ]->line[i].nsp
523 							= np;
524 					}
525 				}
526 			}
527 		}
528 		for ( i = endx - trcw + 1; i <= endx; i++ ) {
529 			win->alines[ 0 ]->line[i].ch = topright.vals[ 0 ];
530 			win->alines[ 0 ]->line[i].attr = topright.attributes;
531 			np = win->alines[ 0 ]->line[i].nsp;
532 			if (np) {
533 				while ( np ) {
534 					tnp = np->next;
535 					free( np );
536 					np = tnp;
537 				}
538 				win->alines[ 0 ]->line[i].nsp = NULL;
539 			}
540 			if ( i == endx - trcw + 1 ) {
541 				SET_WCOL( win->alines[ 0 ]->line[ i ], trcw );
542 				if ( topright.elements > 1 ) {
543 					for ( k = 1; k < topright.elements;
544 							k++ ) {
545 						np = (nschar_t *)malloc(sizeof(nschar_t));
546 						if (!np)
547 							return ERR;
548 						np->ch = topright.vals[ k ];
549 						np->next = win->alines[0]->line[i].nsp;
550 						win->alines[ 0 ]->line[i].nsp
551 							= np;
552 					}
553 				}
554 			} else
555 				SET_WCOL( win->alines[ 0 ]->line[ i ],
556 					  endx - trcw + 1 - i );
557 		}
558 		for ( i = 0; i < blcw; i++ ) {
559 			win->alines[ endy ]->line[i].ch = botleft.vals[ 0 ];
560 			win->alines[ endy ]->line[i].attr = botleft.attributes;
561 			np = win->alines[ endy ]->line[i].nsp;
562 			if (np) {
563 				while ( np ) {
564 					tnp = np->next;
565 					free( np );
566 					np = tnp;
567 				}
568 				win->alines[ endy ]->line[i].nsp = NULL;
569 			}
570 			if ( i )
571 				SET_WCOL( win->alines[endy]->line[i], -i );
572 			else {
573 				SET_WCOL( win->alines[endy]->line[i], blcw );
574 				if ( botleft.elements > 1 ) {
575 					for ( k = 1; k < botleft.elements;
576 							k++ ) {
577 						np = (nschar_t *)malloc(sizeof(nschar_t));
578 						if (!np)
579 							return ERR;
580 						np->ch = botleft.vals[ k ];
581 						np->next = win->alines[endy]->line[i].nsp;
582 						win->alines[endy]->line[i].nsp
583 							= np;
584 					}
585 				}
586 			}
587 		}
588 		for ( i = endx - brcw + 1; i <= endx; i++ ) {
589 			win->alines[ endy ]->line[i].ch = botright.vals[ 0 ];
590 			win->alines[ endy ]->line[i].attr = botright.attributes;
591 			np = win->alines[ endy ]->line[i].nsp;
592 			if (np) {
593 				while ( np ) {
594 					tnp = np->next;
595 					free( np );
596 					np = tnp;
597 				}
598 				win->alines[ endy ]->line[i].nsp = NULL;
599 			}
600 			if ( i == endx - brcw + 1 ) {
601 				SET_WCOL( win->alines[ endy ]->line[ i ],
602 					  brcw );
603 				if ( botright.elements > 1 ) {
604 					for ( k = 1; k < botright.elements; k++ ) {
605 						np = (nschar_t *)malloc(sizeof(nschar_t));
606 						if (!np)
607 							return ERR;
608 						np->ch = botright.vals[ k ];
609 						np->next = win->alines[endy]->line[i].nsp;
610 						win->alines[endy]->line[i].nsp
611 							= np;
612 					}
613 				}
614 			} else
615 				SET_WCOL( win->alines[ endy ]->line[ i ],
616 					endx - brcw + 1 - i );
617 		}
618 	}
619 	__touchwin(win);
620 	return (OK);
621 #endif /* HAVE_WCHAR */
622 }
623