background.c revision 1.11
1 /* $NetBSD: background.c,v 1.11 2007/05/28 15:01:54 blymn 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 * 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 NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __RCSID("$NetBSD: background.c,v 1.11 2007/05/28 15:01:54 blymn Exp $"); 42 #endif /* not lint */ 43 44 #include <stdlib.h> 45 #include "curses.h" 46 #include "curses_private.h" 47 48 /* 49 * bkgdset 50 * Set new background attributes on stdscr. 51 */ 52 void 53 bkgdset(chtype ch) 54 { 55 wbkgdset(stdscr, ch); 56 } 57 58 /* 59 * bkgd -- 60 * Set new background and new background attributes on stdscr. 61 */ 62 int 63 bkgd(chtype ch) 64 { 65 return(wbkgd(stdscr, ch)); 66 } 67 68 /* 69 * wbkgdset 70 * Set new background attributes. 71 */ 72 void 73 wbkgdset(WINDOW *win, chtype ch) 74 { 75 #ifdef DEBUG 76 __CTRACE(__CTRACE_ATTR, "wbkgdset: (%p), '%s', %08x\n", 77 win, unctrl(ch & +__CHARTEXT), ch & __ATTRIBUTES); 78 #endif 79 80 /* Background character. */ 81 if (ch & __CHARTEXT) 82 win->bch = (wchar_t) ch & __CHARTEXT; 83 84 /* Background attributes (check colour). */ 85 if (__using_color && !(ch & __COLOR)) 86 ch |= __default_color; 87 win->battr = (attr_t) ch & __ATTRIBUTES; 88 } 89 90 /* 91 * wbkgd -- 92 * Set new background and new background attributes. 93 */ 94 int 95 wbkgd(WINDOW *win, chtype ch) 96 { 97 int y, x; 98 99 #ifdef DEBUG 100 __CTRACE(__CTRACE_ATTR, "wbkgd: (%p), '%s', %08x\n", 101 win, unctrl(ch & +__CHARTEXT), ch & __ATTRIBUTES); 102 #endif 103 104 /* Background attributes (check colour). */ 105 if (__using_color && !(ch & __COLOR)) 106 ch |= __default_color; 107 108 win->battr = (attr_t) ch & __ATTRIBUTES; 109 wbkgdset(win, ch); 110 for (y = 0; y < win->maxy; y++) 111 for (x = 0; x < win->maxx; x++) { 112 /* Copy character if space */ 113 if (ch & A_CHARTEXT && win->lines[y]->line[x].ch == ' ') 114 win->lines[y]->line[x].ch = ch & __CHARTEXT; 115 /* Merge attributes */ 116 if (win->lines[y]->line[x].attr & __ALTCHARSET) 117 win->lines[y]->line[x].attr = 118 (ch & __ATTRIBUTES) | __ALTCHARSET; 119 else 120 win->lines[y]->line[x].attr = 121 ch & __ATTRIBUTES; 122 } 123 __touchwin(win); 124 return(OK); 125 } 126 127 /* 128 * getbkgd -- 129 * Get current background attributes. 130 */ 131 chtype 132 getbkgd(WINDOW *win) 133 { 134 attr_t battr; 135 136 /* Background attributes (check colour). */ 137 battr = win->battr & A_ATTRIBUTES; 138 if (__using_color && ((battr & __COLOR) == __default_color)) 139 battr &= ~__default_color; 140 141 return ((chtype) ((win->bch & A_CHARTEXT) | battr)); 142 } 143 144 int bkgrnd(const cchar_t *wch) 145 { 146 #ifndef HAVE_WCHAR 147 return ERR; 148 #else 149 return wbkgrnd( stdscr, wch ); 150 #endif /* HAVE_WCHAR */ 151 } 152 153 void bkgrndset(const cchar_t *wch) 154 { 155 #ifdef HAVE_WCHAR 156 wbkgrndset( stdscr, wch ); 157 #endif /* HAVE_WCHAR */ 158 } 159 160 int getbkgrnd(cchar_t *wch) 161 { 162 #ifndef HAVE_WCHAR 163 return ERR; 164 #else 165 return wgetbkgrnd( stdscr, wch ); 166 #endif /* HAVE_WCHAR */ 167 } 168 169 int wbkgrnd(WINDOW *win, const cchar_t *wch) 170 { 171 #ifndef HAVE_WCHAR 172 return ERR; 173 #else 174 /* int y, x, i; */ 175 attr_t battr; 176 /* nschar_t *np, *tnp, *pnp; */ 177 178 #ifdef DEBUG 179 __CTRACE(__CTRACE_ATTR, "wbkgrnd: (%p), '%s', %x\n", 180 win, (char *) wunctrl(wch), wch->attributes); 181 #endif 182 183 /* ignore multi-column characters */ 184 if ( !wch->elements || wcwidth( wch->vals[ 0 ]) > 1 ) 185 return ERR; 186 187 /* Background attributes (check colour). */ 188 battr = wch->attributes & WA_ATTRIBUTES; 189 if (__using_color && !( battr & __COLOR)) 190 battr |= __default_color; 191 192 win->battr = battr; 193 wbkgrndset(win, wch); 194 __touchwin(win); 195 return OK; 196 #endif /* HAVE_WCHAR */ 197 } 198 199 void wbkgrndset(WINDOW *win, const cchar_t *wch) 200 { 201 #ifdef HAVE_WCHAR 202 attr_t battr; 203 nschar_t *np, *tnp; 204 int i; 205 206 #ifdef DEBUG 207 __CTRACE(__CTRACE_ATTR, "wbkgrndset: (%p), '%s', %x\n", 208 win, (char *) wunctrl(wch), wch->attributes); 209 #endif 210 211 /* ignore multi-column characters */ 212 if ( !wch->elements || wcwidth( wch->vals[ 0 ]) > 1 ) 213 return; 214 215 /* Background character. */ 216 tnp = np = win->bnsp; 217 if ( wcwidth( wch->vals[ 0 ])) 218 win->bch = wch->vals[ 0 ]; 219 else { 220 if ( !np ) { 221 np = (nschar_t *)malloc(sizeof(nschar_t)); 222 if (!np) 223 return; 224 np->next = NULL; 225 win->bnsp = np; 226 } 227 np->ch = wch->vals[ 0 ]; 228 tnp = np; 229 np = np->next; 230 } 231 /* add non-spacing characters */ 232 if ( wch->elements > 1 ) { 233 for ( i = 1; i < wch->elements; i++ ) { 234 if ( !np ) { 235 np = (nschar_t *)malloc(sizeof(nschar_t)); 236 if (!np) 237 return; 238 np->next = NULL; 239 if ( tnp ) 240 tnp->next = np; 241 else 242 win->bnsp = np; 243 } 244 np->ch = wch->vals[ i ]; 245 tnp = np; 246 np = np->next; 247 } 248 } 249 /* clear the old non-spacing characters */ 250 while ( np ) { 251 tnp = np->next; 252 free( np ); 253 np = tnp; 254 } 255 256 /* Background attributes (check colour). */ 257 battr = wch->attributes & WA_ATTRIBUTES; 258 if (__using_color && !( battr & __COLOR)) 259 battr |= __default_color; 260 win->battr = battr; 261 SET_BGWCOL((*win), 1); 262 #endif /* HAVE_WCHAR */ 263 } 264 265 int wgetbkgrnd(WINDOW *win, cchar_t *wch) 266 { 267 #ifndef HAVE_WCHAR 268 return ERR; 269 #else 270 nschar_t *np; 271 272 /* Background attributes (check colour). */ 273 wch->attributes = win->battr & WA_ATTRIBUTES; 274 if (__using_color && (( wch->attributes & __COLOR ) 275 == __default_color)) 276 wch->attributes &= ~__default_color; 277 wch->vals[ 0 ] = win->bch; 278 wch->elements = 1; 279 np = win->bnsp; 280 if (np) { 281 while ( np && wch->elements < CURSES_CCHAR_MAX ) { 282 wch->vals[ wch->elements++ ] = np->ch; 283 np = np->next; 284 } 285 } 286 287 return OK; 288 #endif /* HAVE_WCHAR */ 289 } 290
Indexes created Thu Sep 25 08:09:54 GMT 2025