filebrowser/selfile.c

   1 /*
   2  * Copyright 1989 Software Research Associates, Inc., Tokyo, Japan
   3  *
   4  * Permission to use, copy, modify, and distribute this software and its
   5  * documentation for any purpose and without fee is hereby granted, provided
   6  * that the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation, and that the name of Software Research Associates not be used
   9  * in advertising or publicity pertaining to distribution of the software
  10  * without specific, written prior permission.  Software Research Associates
  11  * makes no representations about the suitability of this software for any
  12  * purpose.  It is provided "as is" without express or implied warranty.
  13  *
  14  * SOFTWARE RESEARCH ASSOCIATES DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  15  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
  16  * IN NO EVENT SHALL SOFTWARE RESEARCH ASSOCIATES BE LIABLE FOR ANY SPECIAL,
  17  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  18  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  19  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  20  * PERFORMANCE OF THIS SOFTWARE.
  21  *
  22  * Author: Erik M. van der Poel
  23  *         Software Research Associates, Inc., Tokyo, Japan
  24  *         erik@sra.co.jp
  25  */
  26
  27 /*
  28  * Author's address:
  29  *
  30  *     erik@sra.co.jp
  31  *                                            OR
  32  *     erik%sra.co.jp@uunet.uu.net
  33  *                                            OR
  34  *     erik%sra.co.jp@mcvax.uucp
  35  *                                            OR
  36  *     try junet instead of co.jp
  37  *                                            OR
  38  *     Erik M. van der Poel
  39  *     Software Research Associates, Inc.
  40  *     1-1-1 Hirakawa-cho, Chiyoda-ku
  41  *     Tokyo 102 Japan. TEL +81-3-234-2692
  42  */
  43
  44 #include <stdio.h>
  45 #include <errno.h>
  46 /* BSD 4.3 errno.h does not declare errno */
  47 extern int errno;
  48 //extern int sys_nerr;
  49 //extern char *sys_errlist[]; // [HGM] this produced a compile error in Ubuntu 8.04
  50
  51 #include <sys/param.h>
  52 #include <X11/cursorfont.h>
  53 #include <X11/Intrinsic.h>
  54 #include <X11/StringDefs.h>
  55 #include <X11/Composite.h>
  56 #include <X11/Shell.h>
  57 #include <X11/Xaw/Form.h>
  58 #include <X11/Xaw/Command.h>
  59 #include <X11/Xaw/Scrollbar.h>
  60 #include <X11/Xaw/Label.h>
  61 #include <X11/Xaw/Cardinals.h>
  62
  63 #include "selfile.h"
  64 #include "xstat.h"
  65
  66 /* added missing prototypes */
  67 extern void SFdrawList(int,int);
  68 extern void SFinitFont();
  69 extern void SFcreateGC();
  70 extern int SFchdir(char *);
  71 extern void SFupdatePath();
  72 extern void SFsetText(char *);
  73 extern char SFstatChar(struct stat*);
  74
  75 #ifndef MAXPATHLEN
  76 #define MAXPATHLEN 1024
  77 #endif /* ndef MAXPATHLEN */
  78
  79 #if !defined(SVR4) && !defined(SYSV) && !defined(USG)
  80 extern char *getwd();
  81 #endif /* !defined(SVR4) && !defined(SYSV) && !defined(USG) */
  82
  83 int SFstatus = SEL_FILE_NULL;
  84
  85 char
  86         SFstartDir[MAXPATHLEN],
  87         SFcurrentPath[MAXPATHLEN],
  88         SFlastPath[MAXPATHLEN],
  89         SFcurrentDir[MAXPATHLEN];
  90
  91 Widget
  92         selFile,
  93         selFileCancel,
  94         selFileField,
  95         selFileMess,
  96         filterField,
  97         selFileForm,
  98         selFileHScroll,
  99         selFileHScrolls[3],
 100         selFileLists[3],
 101         selFileOK,
 102         selFilePrompt,
 103         selFileVScrolls[3];
 104
 105 Display *SFdisplay;
 106
 107 Pixel SFfore, SFback;
 108
 109 Atom    SFwmDeleteWindow;
 110
 111 XSegment SFsegs[2], SFcompletionSegs[2];
 112
 113 XawTextPosition SFtextPos;
 114
 115 int SFupperX, SFlowerY, SFupperY;
 116
 117 int SFtextX, SFtextYoffset;
 118
 119 int SFentryWidth, SFentryHeight;
 120
 121 int SFlineToTextH = 3;
 122
 123 int SFlineToTextV = 3;
 124
 125 int SFbesideText = 3;
 126
 127 int SFaboveAndBelowText = 2;
 128
 129 int SFcharsPerEntry = 15;
 130
 131 int SFlistSize = 10;
 132
 133 int SFworkProcAdded = 0;
 134
 135 XtAppContext SFapp;
 136
 137 int SFpathScrollWidth, SFvScrollHeight, SFhScrollWidth;
 138
 139 char SFtextBuffer[MAXPATHLEN];
 140
 141 char SFfilterBuffer[MAXPATHLEN];
 142
 143 XtIntervalId SFdirModTimerId;
 144
 145 int (*SFfunc)();
 146
 147 Boolean SFpathFlag; // [HGM]
 148
 149 static char *oneLineTextEditTranslations = "\
 150         <Key>Return:    redraw-display()\n\
 151         Ctrl<Key>M:     redraw-display()\n\
 152 ";
 153
 154 /* ARGSUSED */
 155 static void
 156 SFexposeList(w, n, event, cont)
 157         Widget          w;
 158         XtPointer       n;
 159         XEvent          *event;
 160         Boolean         *cont;
 161 {
 162         if ((event->type == NoExpose) || event->xexpose.count) {
 163                 return;
 164         }
 165
 166         SFdrawList((int)(intptr_t)n, SF_DO_NOT_SCROLL);
 167 }
 168
 169 void
 170 SFpurge()
 171 {
 172         if(SFdirs) XtFree((XtPointer) SFdirs);
 173         SFdirs = NULL; // kludge to throw away all cached info
 174 }
 175
 176 /* ARGSUSED */
 177 static void
 178 SFmodVerifyCallback(w, client_data, event, cont)
 179         Widget                  w;
 180         XtPointer               client_data;
 181         XEvent                  *event;
 182         Boolean                 *cont;
 183 {
 184         char    buf[2];
 185
 186         if (
 187                 (XLookupString(&(event->xkey), buf, 2, NULL, NULL) == 1) &&
 188                 ((*buf) == '\r' || *buf == 033)
 189         ) {
 190                 if(client_data) {
 191                     Arg args[10]; char *p;
 192                     if(*buf == 033) { // [HGM] esc in filter: restore and give focus to path
 193                         XtSetArg(args[0], XtNstring, SFfilterBuffer);
 194                         XtSetValues(filterField, args, 1);
 195                         XtSetKeyboardFocus(selFileForm, selFileField);
 196                         SFstatus = SEL_FILE_TEXT;
 197                         return;
 198                     } else
 199                     if(!SFpathFlag) // [HGM] cr: fetch current extenson filter
 200                     {
 201                         XtSetArg(args[0], XtNstring, &p);
 202                         XtGetValues(filterField, args, 1);
 203                         if(strcmp(SFfilterBuffer, p)) SFpurge();
 204                         strncpy(SFfilterBuffer, p, 40);
 205                         SFstatus = SEL_FILE_TEXT;
 206                     }
 207                     return;
 208                 }
 209                 SFstatus = (*buf == 033 ? SEL_FILE_CANCEL : SEL_FILE_OK);
 210         } else {
 211                 if(!client_data) SFstatus = SEL_FILE_TEXT;
 212         }
 213 }
 214
 215 /* ARGSUSED */
 216 static void
 217 SFokCallback(w, cl, cd)
 218         Widget  w;
 219         XtPointer cl, cd;
 220 {
 221         SFstatus = SEL_FILE_OK;
 222 }
 223
 224 static XtCallbackRec SFokSelect[] = {
 225         { SFokCallback, (XtPointer) NULL },
 226         { NULL, (XtPointer) NULL },
 227 };
 228
 229 /* ARGSUSED */
 230 static void
 231 SFcancelCallback(w, cl, cd)
 232         Widget  w;
 233         XtPointer cl, cd;
 234 {
 235         SFstatus = SEL_FILE_CANCEL;
 236 }
 237
 238 static XtCallbackRec SFcancelSelect[] = {
 239         { SFcancelCallback, (XtPointer) NULL },
 240         { NULL, (XtPointer) NULL },
 241 };
 242
 243 /* ARGSUSED */
 244 static void
 245 SFdismissAction(w, event, params, num_params)
 246         Widget  w;
 247         XEvent *event;
 248         String *params;
 249         Cardinal *num_params;
 250 {
 251         if (event->type == ClientMessage &&
 252             event->xclient.data.l[0] != SFwmDeleteWindow) return;
 253
 254         SFstatus = SEL_FILE_CANCEL;
 255 }
 256
 257 static char *wmDeleteWindowTranslation = "\
 258         <Message>WM_PROTOCOLS:  SelFileDismiss()\n\
 259 ";
 260
 261 static XtActionsRec actions[] = {
 262         {"SelFileDismiss",      SFdismissAction},
 263 };
 264
 265 void SFsetFocus(Widget w, XtPointer data, XEvent *event, Boolean *b)
 266 {
 267     XtSetKeyboardFocus((Widget) data, w);
 268 }
 269
 270 static void
 271 SFcreateWidgets(toplevel, prompt, ok, cancel)
 272         Widget  toplevel;
 273         char    *prompt;
 274         char    *ok;
 275         char    *cancel;
 276 {
 277         Cardinal        i, n;
 278         int             listWidth, listHeight;
 279         int             listSpacing = 10;
 280         int             scrollThickness = 15;
 281         int             hScrollX, hScrollY;
 282         int             vScrollX, vScrollY;
 283         Cursor
 284                         xtermCursor,
 285                         sbRightArrowCursor,
 286                         dotCursor;
 287         Arg             arglist[20];
 288
 289         i = 0;
 290         XtSetArg(arglist[i], XtNtransientFor, toplevel);                i++;
 291
 292         selFile = XtAppCreateShell("Browse", "SelFile",
 293                 transientShellWidgetClass, SFdisplay, arglist, i);
 294
 295         /* Add WM_DELETE_WINDOW protocol */
 296         XtAppAddActions(XtWidgetToApplicationContext(selFile),
 297                 actions, XtNumber(actions));
 298         XtOverrideTranslations(selFile,
 299                 XtParseTranslationTable(wmDeleteWindowTranslation));
 300
 301         i = 0;
 302         XtSetArg(arglist[i], XtNdefaultDistance, 30);                   i++;
 303         selFileForm = XtCreateManagedWidget("selFileForm",
 304                 formWidgetClass, selFile, arglist, i);
 305
 306         i = 0;
 307         XtSetArg(arglist[i], XtNlabel, prompt);                         i++;
 308         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 309         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 310         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 311         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 312         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 313         XtSetArg(arglist[i], XtNborderWidth, 0);                        i++;
 314         selFilePrompt = XtCreateManagedWidget("selFilePrompt",
 315                 labelWidgetClass, selFileForm, arglist, i);
 316
 317         i = 0;
 318         XtSetArg(arglist[i], XtNforeground, &SFfore);                   i++;
 319         XtSetArg(arglist[i], XtNbackground, &SFback);                   i++;
 320         XtGetValues(selFilePrompt, arglist, i);
 321
 322         SFinitFont();
 323
 324         SFentryWidth = SFbesideText + SFcharsPerEntry * SFcharWidth +
 325                         SFbesideText;
 326         SFentryHeight = SFaboveAndBelowText + SFcharHeight +
 327                         SFaboveAndBelowText;
 328
 329         listWidth = SFlineToTextH + SFentryWidth + SFlineToTextH + 1 +
 330                         scrollThickness;
 331         listHeight = SFlineToTextV + SFentryHeight + SFlineToTextV + 1 +
 332                         SFlineToTextV + SFlistSize * SFentryHeight +
 333                         SFlineToTextV + 1 + scrollThickness;
 334
 335         SFpathScrollWidth = NR * listWidth + (NR-1) * listSpacing + 4;
 336
 337         hScrollX = -1;
 338         hScrollY = SFlineToTextV + SFentryHeight + SFlineToTextV + 1 +
 339                         SFlineToTextV + SFlistSize * SFentryHeight +
 340                         SFlineToTextV;
 341         SFhScrollWidth = SFlineToTextH + SFentryWidth + SFlineToTextH;
 342
 343         vScrollX = SFlineToTextH + SFentryWidth + SFlineToTextH;
 344         vScrollY = SFlineToTextV + SFentryHeight + SFlineToTextV;
 345         SFvScrollHeight = SFlineToTextV + SFlistSize * SFentryHeight +
 346                         SFlineToTextV;
 347
 348         SFupperX = SFlineToTextH + SFentryWidth + SFlineToTextH - 1;
 349         SFlowerY = SFlineToTextV + SFentryHeight + SFlineToTextV + 1 +
 350                         SFlineToTextV;
 351         SFupperY = SFlineToTextV + SFentryHeight + SFlineToTextV + 1 +
 352                         SFlineToTextV + SFlistSize * SFentryHeight - 1;
 353
 354         SFtextX = SFlineToTextH + SFbesideText;
 355         SFtextYoffset = SFlowerY + SFaboveAndBelowText + SFcharAscent;
 356
 357         SFsegs[0].x1 = 0;
 358         SFsegs[0].y1 = vScrollY;
 359         SFsegs[0].x2 = vScrollX - 1;
 360         SFsegs[0].y2 = vScrollY;
 361         SFsegs[1].x1 = vScrollX;
 362         SFsegs[1].y1 = 0;
 363         SFsegs[1].x2 = vScrollX;
 364         SFsegs[1].y2 = vScrollY - 1;
 365
 366         SFcompletionSegs[0].x1 = SFcompletionSegs[0].x2 = SFlineToTextH;
 367         SFcompletionSegs[1].x1 = SFcompletionSegs[1].x2 =
 368                 SFlineToTextH + SFentryWidth - 1;
 369
 370         i = 0;
 371         XtSetArg(arglist[i], XtNwidth, NR * listWidth + (NR - 1) * listSpacing + 4);
 372                                                                         i++;
 373         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 374
 375         XtSetArg(arglist[i], XtNfromVert, selFilePrompt);               i++;
 376         XtSetArg(arglist[i], XtNvertDistance, 5);                       i++;
 377         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 378         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 379         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 380         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 381         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 382         XtSetArg(arglist[i], XtNstring, SFtextBuffer);                  i++;
 383         XtSetArg(arglist[i], XtNlength, MAXPATHLEN);                    i++;
 384         XtSetArg(arglist[i], XtNeditType, XawtextEdit);                 i++;
 385         XtSetArg(arglist[i], XtNwrap, XawtextWrapWord);                 i++;
 386         XtSetArg(arglist[i], XtNresize, XawtextResizeHeight);           i++;
 387         XtSetArg(arglist[i], XtNuseStringInPlace, True);                i++;
 388         selFileField = XtCreateManagedWidget("selFileField",
 389                 asciiTextWidgetClass, selFileForm, arglist, i);
 390
 391         XtOverrideTranslations(selFileField,
 392                 XtParseTranslationTable(oneLineTextEditTranslations));
 393         XtAddEventHandler(selFileField, ButtonPressMask, False, SFsetFocus, (XtPointer) selFileForm);
 394
 395         i = 0;
 396         XtSetArg(arglist[i], XtNlabel, "Filter on extensions:");        i++;
 397         XtSetArg(arglist[i], XtNvertDistance, 5);                       i++;
 398         XtSetArg(arglist[i], XtNfromVert, selFileField);                i++;
 399         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 400         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 401         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 402         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 403         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 404         XtSetArg(arglist[i], XtNborderWidth, 0);                        i++;
 405         selFileMess = XtCreateManagedWidget("selFileMess",
 406                 labelWidgetClass, selFileForm, arglist, i);
 407
 408         i = 0;
 409         XtSetArg(arglist[i], XtNwidth, NR * listWidth + (NR - 1) * listSpacing + 4);
 410                                                                         i++;
 411         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 412         XtSetArg(arglist[i], XtNvertDistance, 5);                       i++;
 413         XtSetArg(arglist[i], XtNfromVert, selFileMess);                 i++;
 414         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 415         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 416         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 417         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 418         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 419         XtSetArg(arglist[i], XtNlength, MAXPATHLEN);                    i++;
 420         XtSetArg(arglist[i], XtNeditType, XawtextEdit);                 i++;
 421         XtSetArg(arglist[i], XtNwrap, XawtextWrapWord);                 i++;
 422         XtSetArg(arglist[i], XtNresize, XawtextResizeHeight);           i++;
 423         XtSetArg(arglist[i], XtNuseStringInPlace, False);               i++;
 424         filterField = XtCreateManagedWidget("filterField",
 425                 asciiTextWidgetClass, selFileForm, arglist, i);
 426
 427         XtOverrideTranslations(filterField,
 428                 XtParseTranslationTable(oneLineTextEditTranslations));
 429         XtAddEventHandler(filterField, ButtonPressMask, False, SFsetFocus, (XtPointer) selFileForm);
 430
 431         i = 0;
 432         XtSetArg(arglist[i], XtNorientation, XtorientHorizontal);       i++;
 433         XtSetArg(arglist[i], XtNwidth, SFpathScrollWidth);              i++;
 434         XtSetArg(arglist[i], XtNheight, scrollThickness);               i++;
 435         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 436         XtSetArg(arglist[i], XtNfromVert, filterField);                 i++;
 437         XtSetArg(arglist[i], XtNvertDistance, 10);                      i++;
 438         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 439         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 440         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 441         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 442         selFileHScroll = XtCreateManagedWidget("selFileHScroll",
 443                 scrollbarWidgetClass, selFileForm, arglist, i);
 444
 445         XtAddCallback(selFileHScroll, XtNjumpProc,
 446                 SFpathSliderMovedCallback, (XtPointer) NULL);
 447         XtAddCallback(selFileHScroll, XtNscrollProc,
 448                 SFpathAreaSelectedCallback, (XtPointer) NULL);
 449
 450         i = 0;
 451         XtSetArg(arglist[i], XtNwidth, listWidth);                      i++;
 452         XtSetArg(arglist[i], XtNheight, listHeight);                    i++;
 453         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 454         XtSetArg(arglist[i], XtNfromVert, selFileHScroll);              i++;
 455         XtSetArg(arglist[i], XtNvertDistance, 10);                      i++;
 456         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 457         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 458         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 459         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 460         selFileLists[0] = XtCreateManagedWidget("selFileList1",
 461                 compositeWidgetClass, selFileForm, arglist, i);
 462 #if (NR == 3)
 463         i = 0;
 464         XtSetArg(arglist[i], XtNwidth, listWidth);                      i++;
 465         XtSetArg(arglist[i], XtNheight, listHeight);                    i++;
 466         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 467         XtSetArg(arglist[i], XtNfromHoriz, selFileLists[0]);            i++;
 468         XtSetArg(arglist[i], XtNfromVert, selFileHScroll);              i++;
 469         XtSetArg(arglist[i], XtNhorizDistance, listSpacing);            i++;
 470         XtSetArg(arglist[i], XtNvertDistance, 10);                      i++;
 471         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 472         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 473         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 474         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 475         selFileLists[1] = XtCreateManagedWidget("selFileList2",
 476                 compositeWidgetClass, selFileForm, arglist, i);
 477
 478         i = 0;
 479         XtSetArg(arglist[i], XtNwidth, listWidth);                      i++;
 480         XtSetArg(arglist[i], XtNheight, listHeight);                    i++;
 481         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 482         XtSetArg(arglist[i], XtNfromHoriz, selFileLists[1]);            i++;
 483         XtSetArg(arglist[i], XtNfromVert, selFileHScroll);              i++;
 484         XtSetArg(arglist[i], XtNhorizDistance, listSpacing);            i++;
 485         XtSetArg(arglist[i], XtNvertDistance, 10);                      i++;
 486         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 487         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 488         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 489         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 490         selFileLists[2] = XtCreateManagedWidget("selFileList3",
 491                 compositeWidgetClass, selFileForm, arglist, i);
 492 #endif
 493         for (n = 0; n < NR; n++) {
 494
 495                 i = 0;
 496                 XtSetArg(arglist[i], XtNx, vScrollX);                   i++;
 497                 XtSetArg(arglist[i], XtNy, vScrollY);                   i++;
 498                 XtSetArg(arglist[i], XtNwidth, scrollThickness);        i++;
 499                 XtSetArg(arglist[i], XtNheight, SFvScrollHeight);       i++;
 500                 XtSetArg(arglist[i], XtNborderColor, SFfore);           i++;
 501                 selFileVScrolls[n] = XtCreateManagedWidget("selFileVScroll",
 502                         scrollbarWidgetClass, selFileLists[n], arglist, i);
 503
 504                 XtAddCallback(selFileVScrolls[n], XtNjumpProc,
 505                         SFvFloatSliderMovedCallback, (XtPointer)(intptr_t) n);
 506                 XtAddCallback(selFileVScrolls[n], XtNscrollProc,
 507                         SFvAreaSelectedCallback, (XtPointer)(intptr_t) n);
 508
 509                 i = 0;
 510
 511                 XtSetArg(arglist[i], XtNorientation, XtorientHorizontal);
 512                                                                         i++;
 513                 XtSetArg(arglist[i], XtNx, hScrollX);                   i++;
 514                 XtSetArg(arglist[i], XtNy, hScrollY);                   i++;
 515                 XtSetArg(arglist[i], XtNwidth, SFhScrollWidth);         i++;
 516                 XtSetArg(arglist[i], XtNheight, scrollThickness);       i++;
 517                 XtSetArg(arglist[i], XtNborderColor, SFfore);           i++;
 518                 selFileHScrolls[n] = XtCreateManagedWidget("selFileHScroll",
 519                         scrollbarWidgetClass, selFileLists[n], arglist, i);
 520
 521                 XtAddCallback(selFileHScrolls[n], XtNjumpProc,
 522                         SFhSliderMovedCallback, (XtPointer)(intptr_t) n);
 523                 XtAddCallback(selFileHScrolls[n], XtNscrollProc,
 524                         SFhAreaSelectedCallback, (XtPointer)(intptr_t) n);
 525         }
 526
 527         i = 0;
 528         XtSetArg(arglist[i], XtNlabel, ok);                             i++;
 529         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 530         XtSetArg(arglist[i], XtNcallback, SFokSelect);                  i++;
 531         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 532         XtSetArg(arglist[i], XtNfromVert, selFileLists[0]);             i++;
 533         XtSetArg(arglist[i], XtNvertDistance, 30);                      i++;
 534         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 535         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 536         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 537         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 538         selFileOK = XtCreateManagedWidget("selFileOK", commandWidgetClass,
 539                 selFileForm, arglist, i);
 540
 541         i = 0;
 542         XtSetArg(arglist[i], XtNlabel, cancel);                         i++;
 543         XtSetArg(arglist[i], XtNresizable, True);                       i++;
 544         XtSetArg(arglist[i], XtNcallback, SFcancelSelect);              i++;
 545         XtSetArg(arglist[i], XtNborderColor, SFfore);                   i++;
 546         XtSetArg(arglist[i], XtNfromHoriz, selFileOK);                  i++;
 547         XtSetArg(arglist[i], XtNfromVert, selFileLists[0]);             i++;
 548         XtSetArg(arglist[i], XtNhorizDistance, 30);                     i++;
 549         XtSetArg(arglist[i], XtNvertDistance, 30);                      i++;
 550         XtSetArg(arglist[i], XtNtop, XtChainTop);                       i++;
 551         XtSetArg(arglist[i], XtNbottom, XtChainTop);                    i++;
 552         XtSetArg(arglist[i], XtNleft, XtChainLeft);                     i++;
 553         XtSetArg(arglist[i], XtNright, XtChainLeft);                    i++;
 554         selFileCancel = XtCreateManagedWidget("selFileCancel",
 555                 commandWidgetClass, selFileForm, arglist, i);
 556
 557         XtSetMappedWhenManaged(selFile, False);
 558         XtRealizeWidget(selFile);
 559
 560         /* Add WM_DELETE_WINDOW protocol */
 561         SFwmDeleteWindow = XInternAtom(SFdisplay, "WM_DELETE_WINDOW", False);
 562         XSetWMProtocols(SFdisplay, XtWindow(selFile), &SFwmDeleteWindow, 1);
 563
 564         SFcreateGC();
 565
 566         xtermCursor = XCreateFontCursor(SFdisplay, XC_xterm);
 567
 568         sbRightArrowCursor = XCreateFontCursor(SFdisplay, XC_sb_right_arrow);
 569         dotCursor = XCreateFontCursor(SFdisplay, XC_dot);
 570
 571         XDefineCursor(SFdisplay, XtWindow(selFileForm), xtermCursor);
 572         XDefineCursor(SFdisplay, XtWindow(selFileField), xtermCursor);
 573         XDefineCursor(SFdisplay, XtWindow(filterField), xtermCursor);
 574
 575         for (n = 0; n < NR; n++) {
 576                 XDefineCursor(SFdisplay, XtWindow(selFileLists[n]),
 577                         sbRightArrowCursor);
 578         }
 579         XDefineCursor(SFdisplay, XtWindow(selFileOK), dotCursor);
 580         XDefineCursor(SFdisplay, XtWindow(selFileCancel), dotCursor);
 581
 582         for (n = 0; n < NR; n++) {
 583                 XtAddEventHandler(selFileLists[n], ExposureMask, True,
 584                         SFexposeList, (XtPointer)(intptr_t) n);
 585                 XtAddEventHandler(selFileLists[n], EnterWindowMask, False,
 586                         SFenterList, (XtPointer)(intptr_t) n);
 587                 XtAddEventHandler(selFileLists[n], LeaveWindowMask, False,
 588                         SFleaveList, (XtPointer)(intptr_t) n);
 589                 XtAddEventHandler(selFileLists[n], PointerMotionMask, False,
 590                         SFmotionList, (XtPointer)(intptr_t) n);
 591                 XtAddEventHandler(selFileLists[n], ButtonPressMask, False,
 592                         SFbuttonPressList, (XtPointer)(intptr_t) n);
 593                 XtAddEventHandler(selFileLists[n], ButtonReleaseMask, False,
 594                         SFbuttonReleaseList, (XtPointer)(intptr_t) n);
 595         }
 596
 597         XtAddEventHandler(selFileField, KeyPressMask, False,
 598                 SFmodVerifyCallback, (XtPointer) NULL);
 599         XtAddEventHandler(filterField, KeyReleaseMask, False,
 600                 SFmodVerifyCallback, (XtPointer) 1);
 601         XtSetKeyboardFocus(selFileForm, selFileField);
 602
 603         SFapp = XtWidgetToApplicationContext(selFile);
 604
 605 }
 606
 607 /* position widget under the cursor */
 608 void
 609 SFpositionWidget(w)
 610     Widget w;
 611 {
 612     Arg args[3];
 613     Cardinal num_args;
 614     Dimension width, height, b_width;
 615     int x, y, max_x, max_y;
 616     Window root, child;
 617     int dummyx, dummyy;
 618     unsigned int dummymask;
 619
 620     XQueryPointer(XtDisplay(w), XtWindow(w), &root, &child, &x, &y,
 621                   &dummyx, &dummyy, &dummymask);
 622     num_args = 0;
 623     XtSetArg(args[num_args], XtNwidth, &width); num_args++;
 624     XtSetArg(args[num_args], XtNheight, &height); num_args++;
 625     XtSetArg(args[num_args], XtNborderWidth, &b_width); num_args++;
 626     XtGetValues(w, args, num_args);
 627
 628     width += 2 * b_width;
 629     height += 2 * b_width;
 630
 631     x -= ( (Position) width/2 );
 632     if (x < 0) x = 0;
 633     if ( x > (max_x = (Position) (XtScreen(w)->width - width)) ) x = max_x;
 634
 635     y -= ( (Position) height/2 );
 636     if (y < 0) y = 0;
 637     if ( y > (max_y = (Position) (XtScreen(w)->height - height)) ) y = max_y;
 638
 639     num_args = 0;
 640     XtSetArg(args[num_args], XtNx, x); num_args++;
 641     XtSetArg(args[num_args], XtNy, y); num_args++;
 642     XtSetValues(w, args, num_args);
 643 }
 644
 645 FILE *
 646 SFopenFile(name, mode, prompt, failed)
 647     char *name;
 648     char *mode;
 649     char *prompt;
 650     char *failed;
 651 {
 652     Arg args[1];
 653     FILE *fp;
 654
 655     SFchdir(SFstartDir);
 656     if ((fp = fopen(name, mode)) == NULL) {
 657         char *buf;
 658         if (1) { // [HGM] always use strerror
 659             buf = XtMalloc(strlen(failed) + strlen(strerror(errno)) +
 660                            strlen(prompt) + 2);
 661             strcpy(buf, failed);
 662             strcat(buf, strerror(errno));
 663             strcat(buf, "\n");
 664             strcat(buf, prompt);
 665         } else {
 666             buf = XtMalloc(strlen(failed) + strlen(prompt) + 2);
 667             strcpy(buf, failed);
 668             strcat(buf, "\n");
 669             strcat(buf, prompt);
 670         }
 671         XtSetArg(args[0], XtNlabel, buf);
 672         XtSetValues(selFilePrompt, args, ONE);
 673         XtFree(buf);
 674         return NULL;
 675     }
 676     return fp;
 677 }
 678
 679 void
 680 SFtextChanged()
 681 {
 682
 683         if ((SFtextBuffer[0] == '/') || (SFtextBuffer[0] == '~')) {
 684           (void) strncpy(SFcurrentPath, SFtextBuffer, MAXPATHLEN);
 685
 686                 SFtextPos = XawTextGetInsertionPoint(selFileField);
 687         } else {
 688           (void) strcat(strncpy(SFcurrentPath, SFstartDir, MAXPATHLEN), SFtextBuffer);
 689
 690                 SFtextPos = XawTextGetInsertionPoint(selFileField) +
 691                         strlen(SFstartDir);
 692         }
 693
 694         if (!SFworkProcAdded) {
 695                 (void) XtAppAddWorkProc(SFapp, SFworkProc, NULL);
 696                 SFworkProcAdded = 1;
 697         }
 698
 699         SFupdatePath();
 700         return;
 701 }
 702
 703 static char *
 704 SFgetText()
 705 {
 706         return strcpy(XtMalloc((unsigned) (strlen(SFtextBuffer) + 1)),
 707                 SFtextBuffer);
 708 }
 709
 710 static void
 711 SFprepareToReturn()
 712 {
 713         SFstatus = SEL_FILE_NULL;
 714         XtRemoveGrab(selFile);
 715         XtUnmapWidget(selFile);
 716         XtRemoveTimeOut(SFdirModTimerId);
 717         if (SFchdir(SFstartDir)) {
 718                 XtAppError(
 719                         SFapp,
 720                         "XsraSelFile: can't return to current directory"
 721                 );
 722         }
 723         return;
 724 }
 725
 726 FILE *
 727 XsraSelFile(toplevel, prompt, ok, cancel, failed,
 728             init_path, filter, mode, show_entry, name_return)
 729         Widget          toplevel;
 730         char            *prompt;
 731         char            *ok;
 732         char            *cancel;
 733         char            *failed;
 734         char            *init_path;
 735         char            *filter;
 736         char            *mode;
 737         int             (*show_entry)();
 738         char            **name_return;
 739 {
 740         static int      firstTime = 1;
 741         Cardinal        i;
 742         Arg             arglist[20];
 743         XEvent          event;
 744         FILE            *fp;
 745
 746         if (!prompt) {
 747                 prompt = "Pathname:";
 748         }
 749
 750         if (!ok) {
 751                 ok = "OK";
 752         }
 753
 754         if (!cancel) {
 755                 cancel = "Cancel";
 756         }
 757
 758         if(SFpathFlag != (mode && mode[0] == 'p') || strcmp(SFfilterBuffer, filter)) {
 759                 SFpurge();
 760                 SFpathFlag = (mode && mode[0] == 'p'); // [HGM] ignore everything that is not a directory
 761         }
 762
 763         if (firstTime) {
 764                 firstTime = 0;
 765                 SFdisplay = XtDisplay(toplevel);
 766                 SFcreateWidgets(toplevel, prompt, ok, cancel);
 767         } else {
 768                 i = 0;
 769
 770                 XtSetArg(arglist[i], XtNlabel, prompt);                 i++;
 771                 XtSetValues(selFilePrompt, arglist, i);
 772
 773                 i = 0;
 774                 XtSetArg(arglist[i], XtNlabel, ok);                     i++;
 775                 XtSetValues(selFileOK, arglist, i);
 776
 777                 i = 0;
 778                 XtSetArg(arglist[i], XtNlabel, cancel);                 i++;
 779                 XtSetValues(selFileCancel, arglist, i);
 780         }
 781
 782         i = 0;
 783         XtSetArg(arglist[i], XtNstring, filter);                        i++;
 784         XtSetValues(filterField, arglist, i);
 785
 786         safeStrCpy(SFfilterBuffer, filter, MAXPATHLEN);
 787         safeStrCpy(SFlastPath, SFtextBuffer, MAXPATHLEN); // remember for cancel
 788
 789         SFpositionWidget(selFile);
 790         XtMapWidget(selFile);
 791
 792 #if defined(SVR4) || defined(SYSV) || defined(USG) || 1
 793         if (!getcwd(SFstartDir, MAXPATHLEN)) { // [HGM] always do this, as I do not know when exactly to do it
 794 #else /* defined(SVR4) || defined(SYSV) || defined(USG) */
 795         if (!getwd(SFstartDir)) {
 796 #endif /* defined(SVR4) || defined(SYSV) || defined(USG) */
 797
 798                 XtAppError(SFapp, "XsraSelFile: can't get current directory");
 799         }
 800         (void) strcat(SFstartDir, "/");
 801         (void) strncpy(SFcurrentDir, SFstartDir, MAXPATHLEN);
 802
 803         if (init_path) {
 804                 if (init_path[0] == '/') {
 805                   (void) strncpy(SFcurrentPath, init_path, MAXPATHLEN);
 806                         if (strncmp(
 807                                 SFcurrentPath,
 808                                 SFstartDir,
 809                                 strlen(SFstartDir)
 810                         )) {
 811                                 SFsetText(SFcurrentPath);
 812                         } else {
 813                                 SFsetText(&(SFcurrentPath[strlen(SFstartDir)]));
 814                         }
 815                 } else {
 816                   (void) strcat(strncpy(SFcurrentPath, SFstartDir, MAXPATHLEN),
 817                                 init_path);
 818                         SFsetText(&(SFcurrentPath[strlen(SFstartDir)]));
 819                 }
 820         } else {
 821           (void) strncpy(SFcurrentPath, SFstartDir, MAXPATHLEN);
 822         }
 823
 824         SFfunc = show_entry;
 825
 826         SFtextChanged();
 827
 828         XtAddGrab(selFile, True, True);
 829
 830         SFdirModTimerId = XtAppAddTimeOut(SFapp, (unsigned long) 1000,
 831                 SFdirModTimer, (XtPointer) NULL);
 832
 833         while (1) {
 834                 XtAppNextEvent(SFapp, &event);
 835                 XtDispatchEvent(&event);
 836                 switch (SFstatus) {
 837                 case SEL_FILE_TEXT:
 838                         SFstatus = SEL_FILE_NULL;
 839                         SFtextChanged();
 840                         break;
 841                 case SEL_FILE_OK:
 842                         *name_return = SFgetText();
 843                         if(mode && (mode[0] == 'p' || mode[0] == 'f')) { // [HGM] for use in file-option browse button
 844                                 SFprepareToReturn();
 845                                 return stderr;
 846                         }
 847                         if (fp = SFopenFile(*name_return, mode,
 848                                             prompt, failed)) {
 849                                 SFprepareToReturn();
 850                                 return fp;
 851                         }
 852                         SFstatus = SEL_FILE_NULL;
 853                         break;
 854                 case SEL_FILE_CANCEL:
 855                         SFprepareToReturn();
 856                         SFsetText(SFlastPath);
 857                         return NULL;
 858                 case SEL_FILE_NULL:
 859                         break;
 860                 }
 861         }
 862 }