1 /* $NetBSD: win.c,v 1.14 2009/04/14 08:50:06 lukem 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: win.c,v 1.14 2009/04/14 08:50:06 lukem Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <string.h> 45 #include "defs.h" 46 #include "char.h" 47 #include "window_string.h" 48 49 /* 50 * Higher level routines for dealing with windows. 51 * 52 * There are two types of windows: user window, and information window. 53 * User windows are the ones with a pty and shell. Information windows 54 * are for displaying error messages, and other information. 55 * 56 * The windows are doubly linked in overlapping order and divided into 57 * two groups: foreground and normal. Information 58 * windows are always foreground. User windows can be either. 59 * Addwin() adds a window to the list at the top of one of the two groups. 60 * Deletewin() deletes a window. Front() moves a window to the front 61 * of its group. Wwopen(), wwadd(), and wwdelete() should never be called 62 * directly. 63 */ 64 65 /* 66 * Open a user window. 67 */ 68 struct ww * 69 openwin(int id, int row, int col, int nrow, int ncol, int nline, char *label, int type, int uflags, char *shf, char **sh) 70 { 71 struct ww *w; 72 73 if (id < 0 && (id = findid()) < 0) 74 return 0; 75 if (row + nrow <= 0 || row > wwnrow - 1 76 || col + ncol <= 0 || col > wwncol - 1) { 77 error("Illegal window position."); 78 return 0; 79 } 80 w = wwopen(type, 0, nrow, ncol, row, col, nline); 81 if (w == 0) { 82 error("Can't open window: %s.", wwerror()); 83 return 0; 84 } 85 w->ww_id = id; 86 window[id] = w; 87 CLR(w->ww_uflags, WWU_ALLFLAGS); 88 SET(w->ww_uflags, uflags); 89 w->ww_alt = w->ww_w; 90 if (label != 0 && setlabel(w, label) < 0) 91 error("No memory for label."); 92 wwcursor(w, 1); 93 /* 94 * We have to do this little maneuver to make sure 95 * addwin() puts w at the top, so we don't waste an 96 * insert and delete operation. 97 */ 98 setselwin((struct ww *)0); 99 addwin(w, 0); 100 setselwin(w); 101 if (wwspawn(w, shf, sh) < 0) { 102 error("Can't execute %s: %s.", shf, wwerror()); 103 closewin(w); 104 return 0; 105 } 106 return w; 107 } 108 109 int 110 findid(void) 111 { 112 int i; 113 114 for (i = 0; i < NWINDOW && window[i] != 0; i++) 115 ; 116 if (i >= NWINDOW) { 117 error("Too many windows."); 118 return -1; 119 } 120 return i; 121 } 122 123 struct ww * 124 findselwin(void) 125 { 126 struct ww *w, *s = 0; 127 int i; 128 129 for (i = 0; i < NWINDOW; i++) 130 if ((w = window[i]) != 0 && w != selwin && 131 (s == 0 || 132 (!isfg(w) && (w->ww_order < s->ww_order || isfg(s))))) 133 s = w; 134 return s; 135 } 136 137 /* 138 * Close a user window. Close all if w == 0. 139 */ 140 void 141 closewin(struct ww *w) 142 { 143 char didit = 0; 144 int i; 145 146 if (w != 0) { 147 closewin1(w); 148 didit++; 149 } else 150 for (i = 0; i < NWINDOW; i++) { 151 if ((w = window[i]) == 0) 152 continue; 153 closewin1(w); 154 didit++; 155 } 156 if (didit) { 157 if (selwin == 0) { 158 if (lastselwin != 0) { 159 setselwin(lastselwin); 160 lastselwin = 0; 161 } else if ((w = findselwin())) 162 setselwin(w); 163 } 164 if (lastselwin == 0 && selwin) 165 if ((w = findselwin())) 166 lastselwin = w; 167 reframe(); 168 } 169 } 170 171 /* 172 * Open an information (display) window. 173 */ 174 struct ww * 175 openiwin(int nrow, const char *label) 176 { 177 struct ww *w; 178 179 if ((w = wwopen(WWT_INTERNAL, 0, nrow, wwncol, 2, 0, 0)) == 0) 180 return 0; 181 SET(w->ww_wflags, WWW_MAPNL | WWW_NOINTR | WWW_NOUPDATE | WWW_UNCTRL); 182 SET(w->ww_uflags, WWU_HASFRAME | WWU_CENTER); 183 w->ww_id = -1; 184 (void) setlabel(w, label); 185 addwin(w, 1); 186 reframe(); 187 return w; 188 } 189 190 /* 191 * Close an information window. 192 */ 193 void 194 closeiwin(struct ww *w) 195 { 196 closewin1(w); 197 reframe(); 198 } 199 200 void 201 closewin1(struct ww *w) 202 { 203 if (w == selwin) 204 selwin = 0; 205 if (w == lastselwin) 206 lastselwin = 0; 207 if (w->ww_id >= 0 && w->ww_id < NWINDOW) 208 window[w->ww_id] = 0; 209 if (w->ww_label) 210 str_free(w->ww_label); 211 deletewin(w); 212 wwclose(w); 213 } 214 215 /* 216 * Move the window to the top of its group. 217 * Don't do it if already fully visible. 218 * Wwvisible() doesn't work for tinted windows. 219 * But anything to make it faster. 220 * Always reframe() if doreframe is true. 221 */ 222 void 223 front(struct ww *w, char doreframe) 224 { 225 if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) { 226 deletewin(w); 227 addwin(w, isfg(w)); 228 doreframe = 1; 229 } 230 if (doreframe) 231 reframe(); 232 } 233 234 /* 235 * Add a window at the top of normal windows or foreground windows. 236 * For normal windows, we put it behind the current window. 237 */ 238 void 239 addwin(struct ww *w, char fg) 240 { 241 if (fg) { 242 wwadd(w, framewin); 243 if (fgwin == framewin) 244 fgwin = w; 245 } else 246 wwadd(w, selwin != 0 && selwin != w && !isfg(selwin) 247 ? selwin : fgwin); 248 } 249 250 /* 251 * Delete a window. 252 */ 253 void 254 deletewin(struct ww *w) 255 { 256 if (fgwin == w) 257 fgwin = w->ww_back; 258 wwdelete(w); 259 } 260 261 void 262 reframe(void) 263 { 264 struct ww *w; 265 266 wwunframe(framewin); 267 for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back) 268 if (ISSET(w->ww_uflags, WWU_HASFRAME)) { 269 wwframe(w, framewin); 270 labelwin(w); 271 } 272 } 273 274 void 275 labelwin(struct ww *w) 276 { 277 int mode = w == selwin ? WWM_REV : 0; 278 279 if (!ISSET(w->ww_uflags, WWU_HASFRAME)) 280 return; 281 if (w->ww_id >= 0) { 282 char buf[2]; 283 284 buf[0] = w->ww_id + '1'; 285 buf[1] = 0; 286 wwlabel(w, framewin, 1, buf, mode); 287 } 288 if (w->ww_label) { 289 int col; 290 291 if (ISSET(w->ww_uflags, WWU_CENTER)) { 292 col = (w->ww_w.nc - strlen(w->ww_label)) / 2; 293 col = MAX(3, col); 294 } else 295 col = 3; 296 wwlabel(w, framewin, col, w->ww_label, mode); 297 } 298 } 299 300 void 301 stopwin(struct ww *w) 302 { 303 if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && wwstoptty(w->ww_pty) < 0) 304 error("Can't stop output: %s.", wwerror()); 305 else 306 SET(w->ww_pflags, WWP_STOPPED); 307 } 308 309 void 310 startwin(struct ww *w) 311 { 312 if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && 313 wwstarttty(w->ww_pty) < 0) 314 error("Can't start output: %s.", wwerror()); 315 else 316 CLR(w->ww_pflags, WWP_STOPPED); 317 } 318 319 void 320 sizewin(struct ww *w, int nrow, int ncol) 321 { 322 struct ww *back = w->ww_back; 323 324 w->ww_alt.nr = w->ww_w.nr; 325 w->ww_alt.nc = w->ww_w.nc; 326 wwdelete(w); 327 if (wwsize(w, nrow, ncol) < 0) 328 error("Can't resize window: %s.", wwerror()); 329 wwadd(w, back); 330 reframe(); 331 } 332 333 void 334 waitnl(struct ww *w) 335 { 336 (void) waitnl1(w, "[Type any key to continue]"); 337 } 338 339 int 340 more(struct ww *w, char always) 341 { 342 int c; 343 int uc = ISSET(w->ww_wflags, WWW_UNCTRL); 344 345 if (!always && w->ww_cur.r < w->ww_w.b - 2) 346 return 0; 347 c = waitnl1(w, "[Type escape to abort, any other key to continue]"); 348 CLR(w->ww_wflags, WWW_UNCTRL); 349 wwputs("\033E", w); 350 SET(w->ww_wflags, uc); 351 return c == ctrl('[') ? 2 : 1; 352 } 353 354 int 355 waitnl1(struct ww *w, const char *prompt) 356 { 357 int uc = ISSET(w->ww_wflags, WWW_UNCTRL); 358 359 CLR(w->ww_wflags, WWW_UNCTRL); 360 front(w, 0); 361 wwprintf(w, "\033Y%c%c\033sA%s\033rA ", 362 w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */ 363 wwcurtowin(w); 364 while (wwpeekc() < 0) 365 wwiomux(); 366 SET(w->ww_wflags, uc); 367 return wwgetc(); 368 } 369