src/motif/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __VMS
  21 #define XtDisplay XTDISPLAY
  22 #endif
  23
  24 #include "wx/setup.h"
  25 #include "wx/utils.h"
  26 #include "wx/app.h"
  27 #include "wx/msgdlg.h"
  28 #include "wx/cursor.h"
  29 #include "wx/window.h" // for wxTopLevelWindows
  30
  31 #include <ctype.h>
  32 #include <stdarg.h>
  33 #include <dirent.h>
  34 #include <string.h>
  35 #include <sys/stat.h>
  36 #include <sys/types.h>
  37 #include <unistd.h>
  38 #include <sys/wait.h>
  39 #include <pwd.h>
  40 #include <errno.h>
  41 #include <netdb.h>
  42 #include <signal.h>
  43
  44 #if (defined(__SUNCC__) || defined(__CLCC__))
  45     #include <sysent.h>
  46 #endif
  47
  48 #ifdef __VMS__
  49 #pragma message disable nosimpint
  50 #endif
  51 #include <Xm/Xm.h>
  52 #ifdef __VMS__
  53 #pragma message enable nosimpint
  54 #endif
  55
  56 #include "wx/unix/execute.h"
  57
  58 #include "wx/motif/private.h"
  59
  60 // ----------------------------------------------------------------------------
  61 // private functions
  62 // ----------------------------------------------------------------------------
  63
  64 // Yuck this is really BOTH site and platform dependent
  65 // so we should use some other strategy!
  66 #ifdef sun
  67     #define DEFAULT_XRESOURCE_DIR "/usr/openwin/lib/app-defaults"
  68 #else
  69     #define DEFAULT_XRESOURCE_DIR "/usr/lib/X11/app-defaults"
  70 #endif
  71
  72 static char *GetIniFile (char *dest, const char *filename);
  73
  74 // ============================================================================
  75 // implementation
  76 // ============================================================================
  77
  78 // ----------------------------------------------------------------------------
  79 // async event processing
  80 // ----------------------------------------------------------------------------
  81
  82 // Consume all events until no more left
  83 void wxFlushEvents()
  84 {
  85     Display *display = (Display*) wxGetDisplay();
  86
  87     XSync (display, FALSE);
  88
  89     // XtAppPending returns availability of events AND timers/inputs, which
  90     // are processed via callbacks, so XtAppNextEvent will not return if
  91     // there are no events. So added '& XtIMXEvent' - Sergey.
  92     while (XtAppPending ((XtAppContext) wxTheApp->GetAppContext()) & XtIMXEvent)
  93     {
  94         XFlush (XtDisplay ((Widget) wxTheApp->GetTopLevelWidget()));
  95         // Jan Lessner: works better when events are non-X events
  96         XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMXEvent);
  97     }
  98 }
  99
 100 // Check whether this window wants to process messages, e.g. Stop button
 101 // in long calculations.
 102 bool wxCheckForInterrupt(wxWindow *wnd)
 103 {
 104     wxCHECK_MSG( wnd, FALSE, "NULL window in wxCheckForInterrupt" );
 105
 106     Display *dpy=(Display*) wnd->GetXDisplay();
 107     Window win=(Window) wnd->GetXWindow();
 108     XEvent event;
 109     XFlush(dpy);
 110     if (wnd->GetMainWidget())
 111     {
 112         XmUpdateDisplay((Widget)(wnd->GetMainWidget()));
 113     }
 114
 115     bool hadEvents = FALSE;
 116     while( XCheckMaskEvent(dpy,
 117                            ButtonPressMask|ButtonReleaseMask|ButtonMotionMask|
 118                            PointerMotionMask|KeyPressMask|KeyReleaseMask,
 119                            &event) )
 120     {
 121         if ( event.xany.window == win )
 122         {
 123             hadEvents = TRUE;
 124
 125             XtDispatchEvent(&event);
 126         }
 127     }
 128
 129     return hadEvents;
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // wxExecute stuff
 134 // ----------------------------------------------------------------------------
 135
 136 static void xt_notify_end_process(XtPointer data, int *WXUNUSED(fid),
 137                                   XtInputId *id)
 138 {
 139     wxEndProcessData *proc_data = (wxEndProcessData *)data;
 140
 141     wxHandleProcessTermination(proc_data);
 142
 143     // VZ: I think they should be the same...
 144     wxASSERT( (int)*id == proc_data->tag );
 145
 146     XtRemoveInput(*id);
 147 }
 148
 149 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 150 {
 151     XtInputId id = XtAppAddInput((XtAppContext) wxTheApp->GetAppContext(),
 152                                  fd,
 153                                  (XtPointer *) XtInputReadMask,
 154                                  (XtInputCallbackProc) xt_notify_end_process,
 155                                  (XtPointer) proc_data);
 156
 157     return (int)id;
 158 }
 159
 160 // ----------------------------------------------------------------------------
 161 // misc
 162 // ----------------------------------------------------------------------------
 163
 164 // Emit a beeeeeep
 165 void wxBell()
 166 {
 167     // Use current setting for the bell
 168     XBell ((Display*) wxGetDisplay(), 0);
 169 }
 170
 171 int wxGetOsVersion(int *majorVsn, int *minorVsn)
 172 {
 173     // FIXME TODO
 174     // This code is WRONG!! Does NOT return the
 175     // Motif version of the libs but the X protocol
 176     // version!
 177     Display *display = XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
 178     if (majorVsn)
 179         *majorVsn = ProtocolVersion (display);
 180     if (minorVsn)
 181         *minorVsn = ProtocolRevision (display);
 182
 183     return wxMOTIF_X;
 184 }
 185
 186 // ----------------------------------------------------------------------------
 187 // Reading and writing resources (eg WIN.INI, .Xdefaults)
 188 // ----------------------------------------------------------------------------
 189
 190 // Read $HOME for what it says is home, if not
 191 // read $USER or $LOGNAME for user name else determine
 192 // the Real User, then determine the Real home dir.
 193 static char * GetIniFile (char *dest, const char *filename)
 194 {
 195     char *home = NULL;
 196     if (filename && wxIsAbsolutePath(filename))
 197     {
 198         strcpy(dest, filename);
 199     }
 200     else if ((home = wxGetUserHome("")) != NULL)
 201     {
 202         strcpy(dest, home);
 203         if (dest[strlen(dest) - 1] != '/')
 204             strcat (dest, "/");
 205         if (filename == NULL)
 206         {
 207             if ((filename = getenv ("XENVIRONMENT")) == NULL)
 208                 filename = ".Xdefaults";
 209         }
 210         else if (*filename != '.')
 211             strcat (dest, ".");
 212         strcat (dest, filename);
 213     } else
 214     {
 215         dest[0] = '\0';
 216     }
 217     return dest;
 218 }
 219
 220 #if wxUSE_RESOURCES
 221
 222 static char *GetResourcePath(char *buf, const char *name, bool create = FALSE)
 223 {
 224     if (create && wxFileExists (name) ) {
 225         strcpy(buf, name);
 226         return buf; // Exists so ...
 227     }
 228
 229     if (*name == '/')
 230         strcpy(buf, name);
 231     else {
 232         // Put in standard place for resource files if not absolute
 233         strcpy (buf, DEFAULT_XRESOURCE_DIR);
 234         strcat (buf, "/");
 235         strcat (buf, (const char*) wxFileNameFromPath (name));
 236     }
 237
 238     if (create) {
 239         // Touch the file to create it
 240         FILE *fd = fopen (buf, "w");
 241         if (fd) fclose (fd);
 242     }
 243     return buf;
 244 }
 245
 246 /*
 247 * We have a cache for writing different resource files,
 248 * which will only get flushed when we call wxFlushResources().
 249 * Build up a list of resource databases waiting to be written.
 250 *
 251 */
 252
 253 wxList wxResourceCache (wxKEY_STRING);
 254
 255 void
 256 wxFlushResources (void)
 257 {
 258     char nameBuffer[512];
 259
 260     wxNode *node = wxResourceCache.First ();
 261     while (node)
 262     {
 263         const char *file = node->GetKeyString();
 264         // If file doesn't exist, create it first.
 265         (void)GetResourcePath(nameBuffer, file, TRUE);
 266
 267         XrmDatabase database = (XrmDatabase) node->Data ();
 268         XrmPutFileDatabase (database, nameBuffer);
 269         XrmDestroyDatabase (database);
 270         wxNode *next = node->Next ();
 271         delete node;
 272         node = next;
 273     }
 274 }
 275
 276 static XrmDatabase wxResourceDatabase = 0;
 277
 278 void wxXMergeDatabases (wxApp * theApp, Display * display);
 279
 280 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
 281 {
 282     char buffer[500];
 283
 284     (void) GetIniFile (buffer, file);
 285
 286     XrmDatabase database;
 287     wxNode *node = wxResourceCache.Find (buffer);
 288     if (node)
 289         database = (XrmDatabase) node->Data ();
 290     else
 291     {
 292         database = XrmGetFileDatabase (buffer);
 293         wxResourceCache.Append (buffer, (wxObject *) database);
 294     }
 295
 296     char resName[300];
 297     strcpy (resName, (const char*) section);
 298     strcat (resName, ".");
 299     strcat (resName, (const char*) entry);
 300
 301     XrmPutStringResource (&database, resName, value);
 302     return TRUE;
 303 }
 304
 305 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
 306 {
 307     char buf[50];
 308     sprintf(buf, "%.4f", value);
 309     return wxWriteResource(section, entry, buf, file);
 310 }
 311
 312 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
 313 {
 314     char buf[50];
 315     sprintf(buf, "%ld", value);
 316     return wxWriteResource(section, entry, buf, file);
 317 }
 318
 319 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
 320 {
 321     char buf[50];
 322     sprintf(buf, "%d", value);
 323     return wxWriteResource(section, entry, buf, file);
 324 }
 325
 326 bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
 327 {
 328     if (!wxResourceDatabase)
 329     {
 330         Display *display = (Display*) wxGetDisplay();
 331         wxXMergeDatabases (wxTheApp, display);
 332     }
 333
 334     XrmDatabase database;
 335
 336     if (file != "")
 337     {
 338         char buffer[500];
 339
 340         // Is this right? Trying to get it to look in the user's
 341         // home directory instead of current directory -- JACS
 342         (void) GetIniFile (buffer, file);
 343
 344         wxNode *node = wxResourceCache.Find (buffer);
 345         if (node)
 346             database = (XrmDatabase) node->Data ();
 347         else
 348         {
 349             database = XrmGetFileDatabase (buffer);
 350             wxResourceCache.Append (buffer, (wxObject *) database);
 351         }
 352     }
 353     else
 354         database = wxResourceDatabase;
 355
 356     XrmValue xvalue;
 357     char *str_type[20];
 358     char buf[150];
 359     strcpy (buf, section);
 360     strcat (buf, ".");
 361     strcat (buf, entry);
 362
 363     Bool success = XrmGetResource (database, buf, "*", str_type,
 364         &xvalue);
 365     // Try different combinations of upper/lower case, just in case...
 366     if (!success)
 367     {
 368         buf[0] = (isupper (buf[0]) ? tolower (buf[0]) : toupper (buf[0]));
 369         success = XrmGetResource (database, buf, "*", str_type,
 370             &xvalue);
 371     }
 372     if (success)
 373     {
 374         if (*value)
 375             delete[] *value;
 376
 377         *value = new char[xvalue.size + 1];
 378         strncpy (*value, xvalue.addr, (int) xvalue.size);
 379         return TRUE;
 380     }
 381     return FALSE;
 382 }
 383
 384 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
 385 {
 386     char *s = NULL;
 387     bool succ = wxGetResource(section, entry, (char **)&s, file);
 388     if (succ)
 389     {
 390         *value = (float)strtod(s, NULL);
 391         delete[] s;
 392         return TRUE;
 393     }
 394     else return FALSE;
 395 }
 396
 397 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
 398 {
 399     char *s = NULL;
 400     bool succ = wxGetResource(section, entry, (char **)&s, file);
 401     if (succ)
 402     {
 403         *value = strtol(s, NULL, 10);
 404         delete[] s;
 405         return TRUE;
 406     }
 407     else return FALSE;
 408 }
 409
 410 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
 411 {
 412     char *s = NULL;
 413     bool succ = wxGetResource(section, entry, (char **)&s, file);
 414     if (succ)
 415     {
 416         // Handle True, False here
 417         // True, Yes, Enables, Set or  Activated
 418         if (*s == 'T' || *s == 'Y' || *s == 'E' || *s == 'S' || *s == 'A')
 419             *value = TRUE;
 420         // False, No, Disabled, Reset, Cleared, Deactivated
 421         else if (*s == 'F' || *s == 'N' || *s == 'D' || *s == 'R' || *s == 'C')
 422             *value = FALSE;
 423         // Handle as Integer
 424         else
 425             *value = (int) strtol (s, NULL, 10);
 426         delete[] s;
 427         return TRUE;
 428     }
 429     else
 430         return FALSE;
 431 }
 432
 433 void wxXMergeDatabases (wxApp * theApp, Display * display)
 434 {
 435     XrmDatabase homeDB, serverDB, applicationDB;
 436     char filenamebuf[1024];
 437
 438     char *filename = &filenamebuf[0];
 439     char *environment;
 440     wxString classname = theApp->GetClassName();
 441     char name[256];
 442     (void) strcpy (name, "/usr/lib/X11/app-defaults/");
 443     (void) strcat (name, (const char*) classname);
 444
 445     /* Get application defaults file, if any */
 446     applicationDB = XrmGetFileDatabase (name);
 447     (void) XrmMergeDatabases (applicationDB, &wxResourceDatabase);
 448
 449     /* Merge server defaults, created by xrdb, loaded as a property of the root
 450     * window when the server initializes and loaded into the display
 451     * structure on XOpenDisplay;
 452     * if not defined, use .Xdefaults
 453     */
 454
 455     if (XResourceManagerString (display) != NULL)
 456     {
 457         serverDB = XrmGetStringDatabase (XResourceManagerString (display));
 458     }
 459     else
 460     {
 461         (void) GetIniFile (filename, NULL);
 462         serverDB = XrmGetFileDatabase (filename);
 463     }
 464     XrmMergeDatabases (serverDB, &wxResourceDatabase);
 465
 466     /* Open XENVIRONMENT file, or if not defined, the .Xdefaults,
 467     * and merge into existing database
 468     */
 469
 470     if ((environment = getenv ("XENVIRONMENT")) == NULL)
 471     {
 472         size_t len;
 473         environment = GetIniFile (filename, NULL);
 474         len = strlen (environment);
 475         wxString hostname = wxGetHostName();
 476         if ( !!hostname )
 477             strncat(environment, hostname, 1024 - len);
 478     }
 479     homeDB = XrmGetFileDatabase (environment);
 480     XrmMergeDatabases (homeDB, &wxResourceDatabase);
 481 }
 482
 483 #if 0
 484
 485 /*
 486 * Not yet used but may be useful.
 487 *
 488 */
 489 void
 490 wxSetDefaultResources (const Widget w, const char **resourceSpec, const char *name)
 491 {
 492     int i;
 493     Display *dpy = XtDisplay (w);    // Retrieve the display pointer
 494
 495     XrmDatabase rdb = NULL;    // A resource data base
 496
 497     // Create an empty resource database
 498     rdb = XrmGetStringDatabase ("");
 499
 500     // Add the Component resources, prepending the name of the component
 501
 502     i = 0;
 503     while (resourceSpec[i] != NULL)
 504     {
 505         char buf[1000];
 506
 507         sprintf (buf, "*%s%s", name, resourceSpec[i++]);
 508         XrmPutLineResource (&rdb, buf);
 509     }
 510
 511     // Merge them into the Xt database, with lowest precendence
 512
 513     if (rdb)
 514     {
 515 #if (XlibSpecificationRelease>=5)
 516         XrmDatabase db = XtDatabase (dpy);
 517         XrmCombineDatabase (rdb, &db, FALSE);
 518 #else
 519         XrmMergeDatabases (dpy->db, &rdb);
 520         dpy->db = rdb;
 521 #endif
 522     }
 523 }
 524 #endif
 525 // 0
 526
 527 #endif // wxUSE_RESOURCES
 528
 529 // ----------------------------------------------------------------------------
 530 // busy cursor stuff
 531 // ----------------------------------------------------------------------------
 532
 533 static int wxBusyCursorCount = 0;
 534
 535 // Helper function
 536 static void
 537 wxXSetBusyCursor (wxWindow * win, wxCursor * cursor)
 538 {
 539     Display *display = (Display*) win->GetXDisplay();
 540
 541     Window xwin = (Window) win->GetXWindow();
 542     if (!xwin)
 543        return;
 544
 545     XSetWindowAttributes attrs;
 546
 547     if (cursor)
 548     {
 549         attrs.cursor = (Cursor) cursor->GetXCursor(display);
 550     }
 551     else
 552     {
 553         // Restore old cursor
 554         if (win->GetCursor().Ok())
 555             attrs.cursor = (Cursor) win->GetCursor().GetXCursor(display);
 556         else
 557             attrs.cursor = None;
 558     }
 559     if (xwin)
 560         XChangeWindowAttributes (display, xwin, CWCursor, &attrs);
 561
 562     XFlush (display);
 563
 564     for(wxNode *node = win->GetChildren().First (); node; node = node->Next())
 565     {
 566         wxWindow *child = (wxWindow *) node->Data ();
 567         wxXSetBusyCursor (child, cursor);
 568     }
 569 }
 570
 571 // Set the cursor to the busy cursor for all windows
 572 void wxBeginBusyCursor(wxCursor *cursor)
 573 {
 574     wxBusyCursorCount++;
 575     if (wxBusyCursorCount == 1)
 576     {
 577         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 578         {
 579             wxWindow *win = (wxWindow *) node->Data ();
 580             wxXSetBusyCursor (win, cursor);
 581         }
 582     }
 583 }
 584
 585 // Restore cursor to normal
 586 void wxEndBusyCursor()
 587 {
 588     if (wxBusyCursorCount == 0)
 589         return;
 590
 591     wxBusyCursorCount--;
 592     if (wxBusyCursorCount == 0)
 593     {
 594         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 595         {
 596             wxWindow *win = (wxWindow *) node->Data ();
 597             wxXSetBusyCursor (win, NULL);
 598         }
 599     }
 600 }
 601
 602 // TRUE if we're between the above two calls
 603 bool wxIsBusy()
 604 {
 605     return (wxBusyCursorCount > 0);
 606 }
 607
 608 // ----------------------------------------------------------------------------
 609 // display info
 610 // ----------------------------------------------------------------------------
 611
 612 void wxGetMousePosition( int* x, int* y )
 613 {
 614     XMotionEvent xev;
 615     Window root, child;
 616     XQueryPointer((Display*) wxGetDisplay(),
 617                   DefaultRootWindow((Display*) wxGetDisplay()),
 618                   &root, &child,
 619                   &(xev.x_root), &(xev.y_root),
 620                   &(xev.x),      &(xev.y),
 621                   &(xev.state));
 622     *x = xev.x_root;
 623     *y = xev.y_root;
 624 };
 625
 626 // Return TRUE if we have a colour display
 627 bool wxColourDisplay()
 628 {
 629     return wxDisplayDepth() > 1;
 630 }
 631
 632 // Returns depth of screen
 633 int wxDisplayDepth()
 634 {
 635     Display *dpy = (Display*) wxGetDisplay();
 636
 637     return DefaultDepth (dpy, DefaultScreen (dpy));
 638 }
 639
 640 // Get size of display
 641 void wxDisplaySize(int *width, int *height)
 642 {
 643     Display *dpy = (Display*) wxGetDisplay();
 644
 645     if ( width )
 646         *width = DisplayWidth (dpy, DefaultScreen (dpy));
 647     if ( height )
 648         *height = DisplayHeight (dpy, DefaultScreen (dpy));
 649 }
 650
 651 void wxDisplaySizeMM(int *width, int *height)
 652 {
 653     Display *dpy = (Display*) wxGetDisplay();
 654
 655     if ( width )
 656         *width = DisplayWidthMM(dpy, DefaultScreen (dpy));
 657     if ( height )
 658         *height = DisplayHeightMM(dpy, DefaultScreen (dpy));
 659 }
 660
 661 // Configurable display in Motif
 662 static WXDisplay *gs_currentDisplay = NULL;
 663 static wxString gs_displayName;
 664
 665 WXDisplay *wxGetDisplay()
 666 {
 667     if (gs_currentDisplay)
 668         return gs_currentDisplay;
 669
 670     if (wxTheApp && wxTheApp->GetTopLevelWidget())
 671         return XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
 672     else if (wxTheApp)
 673         return wxTheApp->GetInitialDisplay();
 674     else
 675         return (WXDisplay*) NULL;
 676 }
 677
 678 bool wxSetDisplay(const wxString& display_name)
 679 {
 680     gs_displayName = display_name;
 681
 682     if ( !display_name )
 683     {
 684         gs_currentDisplay = NULL;
 685
 686         return TRUE;
 687     }
 688     else
 689     {
 690         Cardinal argc = 0;
 691
 692         Display *display = XtOpenDisplay((XtAppContext) wxTheApp->GetAppContext(),
 693             (const char*) display_name,
 694             (const char*) wxTheApp->GetAppName(),
 695             (const char*) wxTheApp->GetClassName(),
 696             NULL,
 697 #if XtSpecificationRelease < 5
 698             0, &argc,
 699 #else
 700             0, (int *)&argc,
 701 #endif
 702             NULL);
 703
 704         if (display)
 705         {
 706             gs_currentDisplay = (WXDisplay*) display;
 707             return TRUE;
 708         }
 709         else
 710             return FALSE;
 711     }
 712 }
 713
 714 wxString wxGetDisplayName()
 715 {
 716     return gs_displayName;
 717 }
 718
 719 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 720 {
 721     return wxGenericFindWindowAtPoint(pt);
 722 }
 723
 724 // ----------------------------------------------------------------------------
 725 // accelerators
 726 // ----------------------------------------------------------------------------
 727
 728 // Find the letter corresponding to the mnemonic, for Motif
 729 char wxFindMnemonic (const char *s)
 730 {
 731     char mnem = 0;
 732     int len = strlen (s);
 733     int i;
 734     for (i = 0; i < len; i++)
 735     {
 736         if (s[i] == '&')
 737         {
 738             // Carefully handle &&
 739             if ((i + 1) <= len && s[i + 1] == '&')
 740                 i++;
 741             else
 742             {
 743                 mnem = s[i + 1];
 744                 break;
 745             }
 746         }
 747     }
 748     return mnem;
 749 }
 750
 751 char * wxFindAccelerator (const char *s)
 752 {
 753     // VZ: this function returns incorrect keysym which completely breaks kbd
 754     //     handling
 755     return NULL;
 756
 757 #if 0
 758    // The accelerator text is after the \t char.
 759     while (*s && *s != '\t')
 760         s++;
 761     if (*s == '\0')
 762         return (NULL);
 763     s++;
 764     /*
 765     Now we need to format it as X standard:
 766
 767       input            output
 768
 769         F7           --> <Key>F7
 770         Ctrl+N       --> Ctrl<Key>N
 771         Alt+k        --> Meta<Key>k
 772         Ctrl+Shift+A --> Ctrl Shift<Key>A
 773
 774     */
 775
 776     wxBuffer[0] = '\0';
 777     char *tmp = copystring (s);
 778     s = tmp;
 779     char *p = tmp;
 780
 781     while (1)
 782     {
 783         while (*p && *p != '+')
 784             p++;
 785         if (*p)
 786         {
 787             *p = '\0';
 788             if (wxBuffer[0])
 789                 strcat (wxBuffer, " ");
 790             if (strcmp (s, "Alt"))
 791                 strcat (wxBuffer, s);
 792             else
 793                 strcat (wxBuffer, "Meta");
 794             s = p++;
 795         }
 796         else
 797         {
 798             strcat (wxBuffer, "<Key>");
 799             strcat (wxBuffer, s);
 800             break;
 801         }
 802     }
 803     delete[]tmp;
 804     return wxBuffer;
 805 #endif
 806 }
 807
 808 XmString wxFindAcceleratorText (const char *s)
 809 {
 810     // VZ: this function returns incorrect keysym which completely breaks kbd
 811     //     handling
 812     return NULL;
 813
 814 #if 0
 815    // The accelerator text is after the \t char.
 816     while (*s && *s != '\t')
 817         s++;
 818     if (*s == '\0')
 819         return (NULL);
 820     s++;
 821     XmString text = XmStringCreateSimple ((char *)s);
 822     return text;
 823 #endif
 824 }
 825
 826 // ----------------------------------------------------------------------------
 827 // keycode translations
 828 // ----------------------------------------------------------------------------
 829
 830 #include <X11/keysym.h>
 831
 832 // FIXME what about tables??
 833
 834 int wxCharCodeXToWX(KeySym keySym)
 835 {
 836     int id;
 837     switch (keySym)
 838     {
 839         case XK_Shift_L:
 840         case XK_Shift_R:
 841             id = WXK_SHIFT; break;
 842         case XK_Control_L:
 843         case XK_Control_R:
 844             id = WXK_CONTROL; break;
 845         case XK_BackSpace:
 846             id = WXK_BACK; break;
 847         case XK_Delete:
 848             id = WXK_DELETE; break;
 849         case XK_Clear:
 850             id = WXK_CLEAR; break;
 851         case XK_Tab:
 852             id = WXK_TAB; break;
 853         case XK_numbersign:
 854             id = '#'; break;
 855         case XK_Return:
 856             id = WXK_RETURN; break;
 857         case XK_Escape:
 858             id = WXK_ESCAPE; break;
 859         case XK_Pause:
 860         case XK_Break:
 861             id = WXK_PAUSE; break;
 862         case XK_Num_Lock:
 863             id = WXK_NUMLOCK; break;
 864         case XK_Scroll_Lock:
 865             id = WXK_SCROLL; break;
 866
 867         case XK_Home:
 868             id = WXK_HOME; break;
 869         case XK_End:
 870             id = WXK_END; break;
 871         case XK_Left:
 872             id = WXK_LEFT; break;
 873         case XK_Right:
 874             id = WXK_RIGHT; break;
 875         case XK_Up:
 876             id = WXK_UP; break;
 877         case XK_Down:
 878             id = WXK_DOWN; break;
 879         case XK_Next:
 880             id = WXK_NEXT; break;
 881         case XK_Prior:
 882             id = WXK_PRIOR; break;
 883         case XK_Menu:
 884             id = WXK_MENU; break;
 885         case XK_Select:
 886             id = WXK_SELECT; break;
 887         case XK_Cancel:
 888             id = WXK_CANCEL; break;
 889         case XK_Print:
 890             id = WXK_PRINT; break;
 891         case XK_Execute:
 892             id = WXK_EXECUTE; break;
 893         case XK_Insert:
 894             id = WXK_INSERT; break;
 895         case XK_Help:
 896             id = WXK_HELP; break;
 897
 898         case XK_KP_Multiply:
 899             id = WXK_MULTIPLY; break;
 900         case XK_KP_Add:
 901             id = WXK_ADD; break;
 902         case XK_KP_Subtract:
 903             id = WXK_SUBTRACT; break;
 904         case XK_KP_Divide:
 905             id = WXK_DIVIDE; break;
 906         case XK_KP_Decimal:
 907             id = WXK_DECIMAL; break;
 908         case XK_KP_Equal:
 909             id = '='; break;
 910         case XK_KP_Space:
 911             id = ' '; break;
 912         case XK_KP_Tab:
 913             id = WXK_TAB; break;
 914         case XK_KP_Enter:
 915             id = WXK_RETURN; break;
 916         case XK_KP_0:
 917             id = WXK_NUMPAD0; break;
 918         case XK_KP_1:
 919             id = WXK_NUMPAD1; break;
 920         case XK_KP_2:
 921             id = WXK_NUMPAD2; break;
 922         case XK_KP_3:
 923             id = WXK_NUMPAD3; break;
 924         case XK_KP_4:
 925             id = WXK_NUMPAD4; break;
 926         case XK_KP_5:
 927             id = WXK_NUMPAD5; break;
 928         case XK_KP_6:
 929             id = WXK_NUMPAD6; break;
 930         case XK_KP_7:
 931             id = WXK_NUMPAD7; break;
 932         case XK_KP_8:
 933             id = WXK_NUMPAD8; break;
 934         case XK_KP_9:
 935             id = WXK_NUMPAD9; break;
 936         case XK_F1:
 937             id = WXK_F1; break;
 938         case XK_F2:
 939             id = WXK_F2; break;
 940         case XK_F3:
 941             id = WXK_F3; break;
 942         case XK_F4:
 943             id = WXK_F4; break;
 944         case XK_F5:
 945             id = WXK_F5; break;
 946         case XK_F6:
 947             id = WXK_F6; break;
 948         case XK_F7:
 949             id = WXK_F7; break;
 950         case XK_F8:
 951             id = WXK_F8; break;
 952         case XK_F9:
 953             id = WXK_F9; break;
 954         case XK_F10:
 955             id = WXK_F10; break;
 956         case XK_F11:
 957             id = WXK_F11; break;
 958         case XK_F12:
 959             id = WXK_F12; break;
 960         case XK_F13:
 961             id = WXK_F13; break;
 962         case XK_F14:
 963             id = WXK_F14; break;
 964         case XK_F15:
 965             id = WXK_F15; break;
 966         case XK_F16:
 967             id = WXK_F16; break;
 968         case XK_F17:
 969             id = WXK_F17; break;
 970         case XK_F18:
 971             id = WXK_F18; break;
 972         case XK_F19:
 973             id = WXK_F19; break;
 974         case XK_F20:
 975             id = WXK_F20; break;
 976         case XK_F21:
 977             id = WXK_F21; break;
 978         case XK_F22:
 979             id = WXK_F22; break;
 980         case XK_F23:
 981             id = WXK_F23; break;
 982         case XK_F24:
 983             id = WXK_F24; break;
 984         default:
 985             id = (keySym <= 255) ? (int)keySym : -1;
 986     }
 987
 988     return id;
 989 }
 990
 991 KeySym wxCharCodeWXToX(int id)
 992 {
 993     KeySym keySym;
 994
 995     switch (id)
 996     {
 997         case WXK_CANCEL:            keySym = XK_Cancel; break;
 998         case WXK_BACK:              keySym = XK_BackSpace; break;
 999         case WXK_TAB:            keySym = XK_Tab; break;
1000         case WXK_CLEAR:        keySym = XK_Clear; break;
1001         case WXK_RETURN:        keySym = XK_Return; break;
1002         case WXK_SHIFT:        keySym = XK_Shift_L; break;
1003         case WXK_CONTROL:        keySym = XK_Control_L; break;
1004         case WXK_MENU :        keySym = XK_Menu; break;
1005         case WXK_PAUSE:        keySym = XK_Pause; break;
1006         case WXK_ESCAPE:        keySym = XK_Escape; break;
1007         case WXK_SPACE:        keySym = ' '; break;
1008         case WXK_PRIOR:        keySym = XK_Prior; break;
1009         case WXK_NEXT :        keySym = XK_Next; break;
1010         case WXK_END:        keySym = XK_End; break;
1011         case WXK_HOME :        keySym = XK_Home; break;
1012         case WXK_LEFT :        keySym = XK_Left; break;
1013         case WXK_UP:        keySym = XK_Up; break;
1014         case WXK_RIGHT:        keySym = XK_Right; break;
1015         case WXK_DOWN :        keySym = XK_Down; break;
1016         case WXK_SELECT:        keySym = XK_Select; break;
1017         case WXK_PRINT:        keySym = XK_Print; break;
1018         case WXK_EXECUTE:        keySym = XK_Execute; break;
1019         case WXK_INSERT:        keySym = XK_Insert; break;
1020         case WXK_DELETE:        keySym = XK_Delete; break;
1021         case WXK_HELP :        keySym = XK_Help; break;
1022         case WXK_NUMPAD0:        keySym = XK_KP_0; break;
1023         case WXK_NUMPAD1:        keySym = XK_KP_1; break;
1024         case WXK_NUMPAD2:        keySym = XK_KP_2; break;
1025         case WXK_NUMPAD3:        keySym = XK_KP_3; break;
1026         case WXK_NUMPAD4:        keySym = XK_KP_4; break;
1027         case WXK_NUMPAD5:        keySym = XK_KP_5; break;
1028         case WXK_NUMPAD6:        keySym = XK_KP_6; break;
1029         case WXK_NUMPAD7:        keySym = XK_KP_7; break;
1030         case WXK_NUMPAD8:        keySym = XK_KP_8; break;
1031         case WXK_NUMPAD9:        keySym = XK_KP_9; break;
1032         case WXK_MULTIPLY:        keySym = XK_KP_Multiply; break;
1033         case WXK_ADD:        keySym = XK_KP_Add; break;
1034         case WXK_SUBTRACT:        keySym = XK_KP_Subtract; break;
1035         case WXK_DECIMAL:        keySym = XK_KP_Decimal; break;
1036         case WXK_DIVIDE:        keySym = XK_KP_Divide; break;
1037         case WXK_F1:        keySym = XK_F1; break;
1038         case WXK_F2:        keySym = XK_F2; break;
1039         case WXK_F3:        keySym = XK_F3; break;
1040         case WXK_F4:        keySym = XK_F4; break;
1041         case WXK_F5:        keySym = XK_F5; break;
1042         case WXK_F6:        keySym = XK_F6; break;
1043         case WXK_F7:        keySym = XK_F7; break;
1044         case WXK_F8:        keySym = XK_F8; break;
1045         case WXK_F9:        keySym = XK_F9; break;
1046         case WXK_F10:        keySym = XK_F10; break;
1047         case WXK_F11:        keySym = XK_F11; break;
1048         case WXK_F12:        keySym = XK_F12; break;
1049         case WXK_F13:        keySym = XK_F13; break;
1050         case WXK_F14:        keySym = XK_F14; break;
1051         case WXK_F15:        keySym = XK_F15; break;
1052         case WXK_F16:        keySym = XK_F16; break;
1053         case WXK_F17:        keySym = XK_F17; break;
1054         case WXK_F18:        keySym = XK_F18; break;
1055         case WXK_F19:        keySym = XK_F19; break;
1056         case WXK_F20:        keySym = XK_F20; break;
1057         case WXK_F21:        keySym = XK_F21; break;
1058         case WXK_F22:        keySym = XK_F22; break;
1059         case WXK_F23:        keySym = XK_F23; break;
1060         case WXK_F24:        keySym = XK_F24; break;
1061         case WXK_NUMLOCK:    keySym = XK_Num_Lock; break;
1062         case WXK_SCROLL:     keySym = XK_Scroll_Lock; break;
1063         default:             keySym = id <= 255 ? (KeySym)id : 0;
1064     }
1065
1066     return keySym;
1067 }
1068
1069 // ----------------------------------------------------------------------------
1070 // Some colour manipulation routines
1071 // ----------------------------------------------------------------------------
1072
1073 void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
1074 {
1075     int h = hsv->h;
1076     int s = hsv->s;
1077     int v = hsv->v;
1078     int r = 0, g = 0, b = 0;
1079     int i, f;
1080     int p, q, t;
1081     s = (s * wxMAX_RGB) / wxMAX_SV;
1082     v = (v * wxMAX_RGB) / wxMAX_SV;
1083     if (h == 360) h = 0;
1084     if (s == 0) { h = 0; r = g = b = v; }
1085     i = h / 60;
1086     f = h % 60;
1087     p = v * (wxMAX_RGB - s) / wxMAX_RGB;
1088     q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
1089     t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
1090     switch (i)
1091     {
1092     case 0: r = v, g = t, b = p; break;
1093     case 1: r = q, g = v, b = p; break;
1094     case 2: r = p, g = v, b = t; break;
1095     case 3: r = p, g = q, b = v; break;
1096     case 4: r = t, g = p, b = v; break;
1097     case 5: r = v, g = p, b = q; break;
1098     }
1099     rgb->red = r << 8;
1100     rgb->green = g << 8;
1101     rgb->blue = b << 8;
1102 }
1103
1104 void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
1105 {
1106     int r = rgb->red >> 8;
1107     int g = rgb->green >> 8;
1108     int b = rgb->blue >> 8;
1109     int maxv = wxMax3(r, g, b);
1110     int minv = wxMin3(r, g, b);
1111     int h = 0, s, v;
1112     v = maxv;
1113     if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
1114     else s = 0;
1115     if (s == 0) h = 0;
1116     else
1117     {
1118         int rc, gc, bc, hex = 0;
1119         rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
1120         gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
1121         bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
1122         if (r == maxv) { h = bc - gc, hex = 0; }
1123         else if (g == maxv) { h = rc - bc, hex = 2; }
1124         else if (b == maxv) { h = gc - rc, hex = 4; }
1125         h = hex * 60 + (h * 60 / wxMAX_RGB);
1126         if (h < 0) h += 360;
1127     }
1128     hsv->h = h;
1129     hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
1130     hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
1131 }
1132
1133 void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
1134 {
1135     int llp;
1136
1137     int screen = DefaultScreen(d);
1138     int num_colors = DisplayCells(d,screen);
1139
1140     XColor *color_defs = new XColor[num_colors];
1141     for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
1142     XQueryColors(d,cmp,color_defs,num_colors);
1143
1144     wxHSV hsv_defs, hsv;
1145     wxXColorToHSV(&hsv,xc);
1146
1147     int diff, min_diff = 0, pixel = 0;
1148
1149     for(llp = 0;llp < num_colors;llp++)
1150     {
1151         wxXColorToHSV(&hsv_defs,&color_defs[llp]);
1152         diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
1153             wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
1154             wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
1155         if (llp == 0) min_diff = diff;
1156         if (min_diff > diff) { min_diff = diff; pixel = llp; }
1157         if (min_diff == 0) break;
1158     }
1159
1160     xc -> red = color_defs[pixel].red;
1161     xc -> green = color_defs[pixel].green;
1162     xc -> blue = color_defs[pixel].blue;
1163     xc -> flags = DoRed | DoGreen | DoBlue;
1164
1165 /*  FIXME, TODO
1166     if (!XAllocColor(d,cmp,xc))
1167         cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
1168 */
1169
1170     delete[] color_defs;
1171 }
1172
1173 void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
1174 {
1175     if (!XAllocColor(d,cmp,xc))
1176     {
1177         //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
1178         wxAllocNearestColor(d,cmp,xc);
1179     }
1180 }
1181
1182
1183 // These functions duplicate those in wxWindow, but are needed
1184 // for use outside of wxWindow (e.g. wxMenu, wxMenuBar).
1185
1186 // Change a widget's foreground and background colours.
1187
1188 void wxDoChangeForegroundColour(WXWidget widget, wxColour& foregroundColour)
1189 {
1190     // When should we specify the foreground, if it's calculated
1191     // by wxComputeColours?
1192     // Solution: say we start with the default (computed) foreground colour.
1193     // If we call SetForegroundColour explicitly for a control or window,
1194     // then the foreground is changed.
1195     // Therefore SetBackgroundColour computes the foreground colour, and
1196     // SetForegroundColour changes the foreground colour. The ordering is
1197     // important.
1198
1199     XtVaSetValues ((Widget) widget,
1200         XmNforeground, foregroundColour.AllocColour(XtDisplay((Widget) widget)),
1201         NULL);
1202 }
1203
1204 void wxDoChangeBackgroundColour(WXWidget widget, wxColour& backgroundColour, bool changeArmColour)
1205 {
1206     wxComputeColours (XtDisplay((Widget) widget), & backgroundColour,
1207         (wxColour*) NULL);
1208
1209     XtVaSetValues ((Widget) widget,
1210         XmNbackground, g_itemColors[wxBACK_INDEX].pixel,
1211         XmNtopShadowColor, g_itemColors[wxTOPS_INDEX].pixel,
1212         XmNbottomShadowColor, g_itemColors[wxBOTS_INDEX].pixel,
1213         XmNforeground, g_itemColors[wxFORE_INDEX].pixel,
1214         NULL);
1215
1216     if (changeArmColour)
1217         XtVaSetValues ((Widget) widget,
1218         XmNarmColor, g_itemColors[wxSELE_INDEX].pixel,
1219         NULL);
1220 }
1221