src/x11/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 #include "wx/setup.h"
  21 #include "wx/utils.h"
  22 #include "wx/app.h"
  23 #include "wx/msgdlg.h"
  24 #include "wx/cursor.h"
  25 #include "wx/window.h" // for wxTopLevelWindows
  26
  27 #include <ctype.h>
  28 #include <stdarg.h>
  29 #include <dirent.h>
  30 #include <string.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <unistd.h>
  34 #include <sys/wait.h>
  35 #include <pwd.h>
  36 #include <errno.h>
  37 #include <netdb.h>
  38 #include <signal.h>
  39
  40 #if (defined(__SUNCC__) || defined(__CLCC__))
  41     #include <sysent.h>
  42 #endif
  43
  44 #ifdef __VMS__
  45 #pragma message disable nosimpint
  46 #endif
  47
  48 #ifdef __VMS__
  49 #pragma message enable nosimpint
  50 #endif
  51
  52 #include "wx/unix/execute.h"
  53
  54 #include "wx/x11/private.h"
  55
  56 // ----------------------------------------------------------------------------
  57 // private functions
  58 // ----------------------------------------------------------------------------
  59
  60 // Yuck this is really BOTH site and platform dependent
  61 // so we should use some other strategy!
  62 #ifdef sun
  63     #define DEFAULT_XRESOURCE_DIR "/usr/openwin/lib/app-defaults"
  64 #else
  65     #define DEFAULT_XRESOURCE_DIR "/usr/lib/X11/app-defaults"
  66 #endif
  67
  68 static char *GetIniFile (char *dest, const char *filename);
  69
  70 // ============================================================================
  71 // implementation
  72 // ============================================================================
  73
  74 // ----------------------------------------------------------------------------
  75 // async event processing
  76 // ----------------------------------------------------------------------------
  77
  78 // Consume all events until no more left
  79 void wxFlushEvents()
  80 {
  81     Display *display = (Display*) wxGetDisplay();
  82
  83     XSync (display, FALSE);
  84
  85     // XtAppPending returns availability of events AND timers/inputs, which
  86     // are processed via callbacks, so XtAppNextEvent will not return if
  87     // there are no events. So added '& XtIMXEvent' - Sergey.
  88     while (XtAppPending ((XtAppContext) wxTheApp->GetAppContext()) & XtIMXEvent)
  89     {
  90         XFlush (XtDisplay ((Widget) wxTheApp->GetTopLevelWidget()));
  91         // Jan Lessner: works better when events are non-X events
  92         XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMXEvent);
  93     }
  94 }
  95
  96 // Check whether this window wants to process messages, e.g. Stop button
  97 // in long calculations.
  98 bool wxCheckForInterrupt(wxWindow *wnd)
  99 {
 100     wxASSERT_MSG(FALSE, "wxCheckForInterrupt not yet implemented.");
 101     return FALSE;
 102 #if 0
 103     wxCHECK_MSG( wnd, FALSE, "NULL window in wxCheckForInterrupt" );
 104
 105     Display *dpy=(Display*) wnd->GetXDisplay();
 106     Window win=(Window) wnd->GetXWindow();
 107     XEvent event;
 108     XFlush(dpy);
 109     if (wnd->GetMainWidget())
 110     {
 111         XmUpdateDisplay((Widget)(wnd->GetMainWidget()));
 112     }
 113
 114     bool hadEvents = FALSE;
 115     while( XCheckMaskEvent(dpy,
 116                            ButtonPressMask|ButtonReleaseMask|ButtonMotionMask|
 117                            PointerMotionMask|KeyPressMask|KeyReleaseMask,
 118                            &event) )
 119     {
 120         if ( event.xany.window == win )
 121         {
 122             hadEvents = TRUE;
 123
 124             XtDispatchEvent(&event);
 125         }
 126     }
 127
 128     return hadEvents;
 129 #endif
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // wxExecute stuff
 134 // ----------------------------------------------------------------------------
 135 #if 0
 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 #endif
 160
 161 // ----------------------------------------------------------------------------
 162 // misc
 163 // ----------------------------------------------------------------------------
 164
 165 // Emit a beeeeeep
 166 void wxBell()
 167 {
 168     // Use current setting for the bell
 169     XBell ((Display*) wxGetDisplay(), 0);
 170 }
 171
 172 int wxGetOsVersion(int *majorVsn, int *minorVsn)
 173 {
 174 #if 0
 175     // FIXME TODO
 176     // This code is WRONG!! Does NOT return the
 177     // Motif version of the libs but the X protocol
 178     // version!
 179     Display *display = XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
 180     if (majorVsn)
 181         *majorVsn = ProtocolVersion (display);
 182     if (minorVsn)
 183         *minorVsn = ProtocolRevision (display);
 184
 185     return wxMOTIF_X;
 186 #else
 187     if (majorVsn)
 188         *majorVsn = 0;
 189     if (minorVsn)
 190         *minorVsn = 0;
 191     return wxX11;
 192 #endif
 193 }
 194
 195 // ----------------------------------------------------------------------------
 196 // Reading and writing resources (eg WIN.INI, .Xdefaults)
 197 // ----------------------------------------------------------------------------
 198
 199 // Read $HOME for what it says is home, if not
 200 // read $USER or $LOGNAME for user name else determine
 201 // the Real User, then determine the Real home dir.
 202 static char * GetIniFile (char *dest, const char *filename)
 203 {
 204     char *home = NULL;
 205     if (filename && wxIsAbsolutePath(filename))
 206     {
 207         strcpy(dest, filename);
 208     }
 209     else if ((home = wxGetUserHome("")) != NULL)
 210     {
 211         strcpy(dest, home);
 212         if (dest[strlen(dest) - 1] != '/')
 213             strcat (dest, "/");
 214         if (filename == NULL)
 215         {
 216             if ((filename = getenv ("XENVIRONMENT")) == NULL)
 217                 filename = ".Xdefaults";
 218         }
 219         else if (*filename != '.')
 220             strcat (dest, ".");
 221         strcat (dest, filename);
 222     } else
 223     {
 224         dest[0] = '\0';
 225     }
 226     return dest;
 227 }
 228
 229 #if wxUSE_RESOURCES
 230
 231 static char *GetResourcePath(char *buf, const char *name, bool create = FALSE)
 232 {
 233     if (create && wxFileExists (name) ) {
 234         strcpy(buf, name);
 235         return buf; // Exists so ...
 236     }
 237
 238     if (*name == '/')
 239         strcpy(buf, name);
 240     else {
 241         // Put in standard place for resource files if not absolute
 242         strcpy (buf, DEFAULT_XRESOURCE_DIR);
 243         strcat (buf, "/");
 244         strcat (buf, (const char*) wxFileNameFromPath (name));
 245     }
 246
 247     if (create) {
 248         // Touch the file to create it
 249         FILE *fd = fopen (buf, "w");
 250         if (fd) fclose (fd);
 251     }
 252     return buf;
 253 }
 254
 255 /*
 256 * We have a cache for writing different resource files,
 257 * which will only get flushed when we call wxFlushResources().
 258 * Build up a list of resource databases waiting to be written.
 259 *
 260 */
 261
 262 wxList wxResourceCache (wxKEY_STRING);
 263
 264 void
 265 wxFlushResources (void)
 266 {
 267     char nameBuffer[512];
 268
 269     wxNode *node = wxResourceCache.First ();
 270     while (node)
 271     {
 272         const char *file = node->GetKeyString();
 273         // If file doesn't exist, create it first.
 274         (void)GetResourcePath(nameBuffer, file, TRUE);
 275
 276         XrmDatabase database = (XrmDatabase) node->Data ();
 277         XrmPutFileDatabase (database, nameBuffer);
 278         XrmDestroyDatabase (database);
 279         wxNode *next = node->Next ();
 280         delete node;
 281         node = next;
 282     }
 283 }
 284
 285 static XrmDatabase wxResourceDatabase = 0;
 286
 287 void wxXMergeDatabases (wxApp * theApp, Display * display);
 288
 289 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
 290 {
 291     char buffer[500];
 292
 293     (void) GetIniFile (buffer, file);
 294
 295     XrmDatabase database;
 296     wxNode *node = wxResourceCache.Find (buffer);
 297     if (node)
 298         database = (XrmDatabase) node->Data ();
 299     else
 300     {
 301         database = XrmGetFileDatabase (buffer);
 302         wxResourceCache.Append (buffer, (wxObject *) database);
 303     }
 304
 305     char resName[300];
 306     strcpy (resName, (const char*) section);
 307     strcat (resName, ".");
 308     strcat (resName, (const char*) entry);
 309
 310     XrmPutStringResource (&database, resName, value);
 311     return TRUE;
 312 }
 313
 314 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
 315 {
 316     char buf[50];
 317     sprintf(buf, "%.4f", value);
 318     return wxWriteResource(section, entry, buf, file);
 319 }
 320
 321 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
 322 {
 323     char buf[50];
 324     sprintf(buf, "%ld", value);
 325     return wxWriteResource(section, entry, buf, file);
 326 }
 327
 328 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
 329 {
 330     char buf[50];
 331     sprintf(buf, "%d", value);
 332     return wxWriteResource(section, entry, buf, file);
 333 }
 334
 335 bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
 336 {
 337     if (!wxResourceDatabase)
 338     {
 339         Display *display = (Display*) wxGetDisplay();
 340         wxXMergeDatabases (wxTheApp, display);
 341     }
 342
 343     XrmDatabase database;
 344
 345     if (file != "")
 346     {
 347         char buffer[500];
 348
 349         // Is this right? Trying to get it to look in the user's
 350         // home directory instead of current directory -- JACS
 351         (void) GetIniFile (buffer, file);
 352
 353         wxNode *node = wxResourceCache.Find (buffer);
 354         if (node)
 355             database = (XrmDatabase) node->Data ();
 356         else
 357         {
 358             database = XrmGetFileDatabase (buffer);
 359             wxResourceCache.Append (buffer, (wxObject *) database);
 360         }
 361     }
 362     else
 363         database = wxResourceDatabase;
 364
 365     XrmValue xvalue;
 366     char *str_type[20];
 367     char buf[150];
 368     strcpy (buf, section);
 369     strcat (buf, ".");
 370     strcat (buf, entry);
 371
 372     Bool success = XrmGetResource (database, buf, "*", str_type,
 373         &xvalue);
 374     // Try different combinations of upper/lower case, just in case...
 375     if (!success)
 376     {
 377         buf[0] = (isupper (buf[0]) ? tolower (buf[0]) : toupper (buf[0]));
 378         success = XrmGetResource (database, buf, "*", str_type,
 379             &xvalue);
 380     }
 381     if (success)
 382     {
 383         if (*value)
 384             delete[] *value;
 385
 386         *value = new char[xvalue.size + 1];
 387         strncpy (*value, xvalue.addr, (int) xvalue.size);
 388         return TRUE;
 389     }
 390     return FALSE;
 391 }
 392
 393 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
 394 {
 395     char *s = NULL;
 396     bool succ = wxGetResource(section, entry, (char **)&s, file);
 397     if (succ)
 398     {
 399         *value = (float)strtod(s, NULL);
 400         delete[] s;
 401         return TRUE;
 402     }
 403     else return FALSE;
 404 }
 405
 406 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
 407 {
 408     char *s = NULL;
 409     bool succ = wxGetResource(section, entry, (char **)&s, file);
 410     if (succ)
 411     {
 412         *value = strtol(s, NULL, 10);
 413         delete[] s;
 414         return TRUE;
 415     }
 416     else return FALSE;
 417 }
 418
 419 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
 420 {
 421     char *s = NULL;
 422     bool succ = wxGetResource(section, entry, (char **)&s, file);
 423     if (succ)
 424     {
 425         // Handle True, False here
 426         // True, Yes, Enables, Set or  Activated
 427         if (*s == 'T' || *s == 'Y' || *s == 'E' || *s == 'S' || *s == 'A')
 428             *value = TRUE;
 429         // False, No, Disabled, Reset, Cleared, Deactivated
 430         else if (*s == 'F' || *s == 'N' || *s == 'D' || *s == 'R' || *s == 'C')
 431             *value = FALSE;
 432         // Handle as Integer
 433         else
 434             *value = (int) strtol (s, NULL, 10);
 435         delete[] s;
 436         return TRUE;
 437     }
 438     else
 439         return FALSE;
 440 }
 441
 442 void wxXMergeDatabases (wxApp * theApp, Display * display)
 443 {
 444     XrmDatabase homeDB, serverDB, applicationDB;
 445     char filenamebuf[1024];
 446
 447     char *filename = &filenamebuf[0];
 448     char *environment;
 449     wxString classname = theApp->GetClassName();
 450     char name[256];
 451     (void) strcpy (name, "/usr/lib/X11/app-defaults/");
 452     (void) strcat (name, (const char*) classname);
 453
 454     /* Get application defaults file, if any */
 455     applicationDB = XrmGetFileDatabase (name);
 456     (void) XrmMergeDatabases (applicationDB, &wxResourceDatabase);
 457
 458     /* Merge server defaults, created by xrdb, loaded as a property of the root
 459     * window when the server initializes and loaded into the display
 460     * structure on XOpenDisplay;
 461     * if not defined, use .Xdefaults
 462     */
 463
 464     if (XResourceManagerString (display) != NULL)
 465     {
 466         serverDB = XrmGetStringDatabase (XResourceManagerString (display));
 467     }
 468     else
 469     {
 470         (void) GetIniFile (filename, NULL);
 471         serverDB = XrmGetFileDatabase (filename);
 472     }
 473     XrmMergeDatabases (serverDB, &wxResourceDatabase);
 474
 475     /* Open XENVIRONMENT file, or if not defined, the .Xdefaults,
 476     * and merge into existing database
 477     */
 478
 479     if ((environment = getenv ("XENVIRONMENT")) == NULL)
 480     {
 481         size_t len;
 482         environment = GetIniFile (filename, NULL);
 483         len = strlen (environment);
 484         wxString hostname = wxGetHostName();
 485         if ( !!hostname )
 486             strncat(environment, hostname, 1024 - len);
 487     }
 488     homeDB = XrmGetFileDatabase (environment);
 489     XrmMergeDatabases (homeDB, &wxResourceDatabase);
 490 }
 491
 492 #if 0
 493
 494 /*
 495 * Not yet used but may be useful.
 496 *
 497 */
 498 void
 499 wxSetDefaultResources (const Widget w, const char **resourceSpec, const char *name)
 500 {
 501     int i;
 502     Display *dpy = XtDisplay (w);    // Retrieve the display pointer
 503
 504     XrmDatabase rdb = NULL;    // A resource data base
 505
 506     // Create an empty resource database
 507     rdb = XrmGetStringDatabase ("");
 508
 509     // Add the Component resources, prepending the name of the component
 510
 511     i = 0;
 512     while (resourceSpec[i] != NULL)
 513     {
 514         char buf[1000];
 515
 516         sprintf (buf, "*%s%s", name, resourceSpec[i++]);
 517         XrmPutLineResource (&rdb, buf);
 518     }
 519
 520     // Merge them into the Xt database, with lowest precendence
 521
 522     if (rdb)
 523     {
 524 #if (XlibSpecificationRelease>=5)
 525         XrmDatabase db = XtDatabase (dpy);
 526         XrmCombineDatabase (rdb, &db, FALSE);
 527 #else
 528         XrmMergeDatabases (dpy->db, &rdb);
 529         dpy->db = rdb;
 530 #endif
 531     }
 532 }
 533 #endif
 534 // 0
 535
 536 #endif // wxUSE_RESOURCES
 537
 538 // ----------------------------------------------------------------------------
 539 // busy cursor stuff
 540 // ----------------------------------------------------------------------------
 541
 542 static int wxBusyCursorCount = 0;
 543
 544 // Helper function
 545 static void
 546 wxXSetBusyCursor (wxWindow * win, wxCursor * cursor)
 547 {
 548     Display *display = (Display*) win->GetXDisplay();
 549
 550     Window xwin = (Window) win->GetXWindow();
 551     if (!xwin)
 552        return;
 553
 554     XSetWindowAttributes attrs;
 555
 556     if (cursor)
 557     {
 558         attrs.cursor = (Cursor) cursor->GetXCursor(display);
 559     }
 560     else
 561     {
 562         // Restore old cursor
 563         if (win->GetCursor().Ok())
 564             attrs.cursor = (Cursor) win->GetCursor().GetXCursor(display);
 565         else
 566             attrs.cursor = None;
 567     }
 568     if (xwin)
 569         XChangeWindowAttributes (display, xwin, CWCursor, &attrs);
 570
 571     XFlush (display);
 572
 573     for(wxNode *node = win->GetChildren().First (); node; node = node->Next())
 574     {
 575         wxWindow *child = (wxWindow *) node->Data ();
 576         wxXSetBusyCursor (child, cursor);
 577     }
 578 }
 579
 580 // Set the cursor to the busy cursor for all windows
 581 void wxBeginBusyCursor(wxCursor *cursor)
 582 {
 583     wxBusyCursorCount++;
 584     if (wxBusyCursorCount == 1)
 585     {
 586         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 587         {
 588             wxWindow *win = (wxWindow *) node->Data ();
 589             wxXSetBusyCursor (win, cursor);
 590         }
 591     }
 592 }
 593
 594 // Restore cursor to normal
 595 void wxEndBusyCursor()
 596 {
 597     if (wxBusyCursorCount == 0)
 598         return;
 599
 600     wxBusyCursorCount--;
 601     if (wxBusyCursorCount == 0)
 602     {
 603         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 604         {
 605             wxWindow *win = (wxWindow *) node->Data ();
 606             wxXSetBusyCursor (win, NULL);
 607         }
 608     }
 609 }
 610
 611 // TRUE if we're between the above two calls
 612 bool wxIsBusy()
 613 {
 614     return (wxBusyCursorCount > 0);
 615 }
 616
 617 // ----------------------------------------------------------------------------
 618 // display info
 619 // ----------------------------------------------------------------------------
 620
 621 void wxGetMousePosition( int* x, int* y )
 622 {
 623     XMotionEvent xev;
 624     Window root, child;
 625     XQueryPointer((Display*) wxGetDisplay(),
 626                   DefaultRootWindow((Display*) wxGetDisplay()),
 627                   &root, &child,
 628                   &(xev.x_root), &(xev.y_root),
 629                   &(xev.x),      &(xev.y),
 630                   &(xev.state));
 631     *x = xev.x_root;
 632     *y = xev.y_root;
 633 };
 634
 635 // Return TRUE if we have a colour display
 636 bool wxColourDisplay()
 637 {
 638     return wxDisplayDepth() > 1;
 639 }
 640
 641 // Returns depth of screen
 642 int wxDisplayDepth()
 643 {
 644     Display *dpy = (Display*) wxGetDisplay();
 645
 646     return DefaultDepth (dpy, DefaultScreen (dpy));
 647 }
 648
 649 // Get size of display
 650 void wxDisplaySize(int *width, int *height)
 651 {
 652     Display *dpy = (Display*) wxGetDisplay();
 653
 654     if ( width )
 655         *width = DisplayWidth (dpy, DefaultScreen (dpy));
 656     if ( height )
 657         *height = DisplayHeight (dpy, DefaultScreen (dpy));
 658 }
 659
 660 void wxDisplaySizeMM(int *width, int *height)
 661 {
 662     Display *dpy = (Display*) wxGetDisplay();
 663
 664     if ( width )
 665         *width = DisplayWidthMM(dpy, DefaultScreen (dpy));
 666     if ( height )
 667         *height = DisplayHeightMM(dpy, DefaultScreen (dpy));
 668 }
 669
 670 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 671 {
 672     // This is supposed to return desktop dimensions minus any window
 673     // manager panels, menus, taskbars, etc.  If there is a way to do that
 674     // for this platform please fix this function, otherwise it defaults
 675     // to the entire desktop.
 676     if (x) *x = 0;
 677     if (y) *y = 0;
 678     wxDisplaySize(width, height);
 679 }
 680
 681
 682 // Configurable display in X11
 683 static WXDisplay *gs_currentDisplay = NULL;
 684 static wxString gs_displayName;
 685
 686 WXDisplay *wxGetDisplay()
 687 {
 688     if (gs_currentDisplay)
 689         return gs_currentDisplay;
 690     else if (wxTheApp)
 691         return wxTheApp->GetInitialDisplay();
 692     else
 693         return (WXDisplay*) NULL;
 694 }
 695
 696 bool wxSetDisplay(const wxString& display_name)
 697 {
 698     gs_displayName = display_name;
 699
 700     if ( display_name.IsEmpty() )
 701     {
 702         gs_currentDisplay = NULL;
 703
 704         return TRUE;
 705     }
 706     else
 707     {
 708         Cardinal argc = 0;
 709
 710         Display* display = XOpenDisplay((const char*) display_name);
 711
 712         if (display)
 713         {
 714             gs_currentDisplay = (WXDisplay*) display;
 715             return TRUE;
 716         }
 717         else
 718             return FALSE;
 719     }
 720 }
 721
 722 wxString wxGetDisplayName()
 723 {
 724     return gs_displayName;
 725 }
 726
 727 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 728 {
 729     return wxGenericFindWindowAtPoint(pt);
 730 }
 731
 732 // ----------------------------------------------------------------------------
 733 // accelerators
 734 // ----------------------------------------------------------------------------
 735
 736 // Find the letter corresponding to the mnemonic, for Motif
 737 char wxFindMnemonic (const char *s)
 738 {
 739     char mnem = 0;
 740     int len = strlen (s);
 741     int i;
 742     for (i = 0; i < len; i++)
 743     {
 744         if (s[i] == '&')
 745         {
 746             // Carefully handle &&
 747             if ((i + 1) <= len && s[i + 1] == '&')
 748                 i++;
 749             else
 750             {
 751                 mnem = s[i + 1];
 752                 break;
 753             }
 754         }
 755     }
 756     return mnem;
 757 }
 758
 759 char * wxFindAccelerator (const char *s)
 760 {
 761     // VZ: this function returns incorrect keysym which completely breaks kbd
 762     //     handling
 763     return NULL;
 764
 765 #if 0
 766    // The accelerator text is after the \t char.
 767     while (*s && *s != '\t')
 768         s++;
 769     if (*s == '\0')
 770         return (NULL);
 771     s++;
 772     /*
 773     Now we need to format it as X standard:
 774
 775       input            output
 776
 777         F7           --> <Key>F7
 778         Ctrl+N       --> Ctrl<Key>N
 779         Alt+k        --> Meta<Key>k
 780         Ctrl+Shift+A --> Ctrl Shift<Key>A
 781
 782     */
 783
 784     wxBuffer[0] = '\0';
 785     char *tmp = copystring (s);
 786     s = tmp;
 787     char *p = tmp;
 788
 789     while (1)
 790     {
 791         while (*p && *p != '+')
 792             p++;
 793         if (*p)
 794         {
 795             *p = '\0';
 796             if (wxBuffer[0])
 797                 strcat (wxBuffer, " ");
 798             if (strcmp (s, "Alt"))
 799                 strcat (wxBuffer, s);
 800             else
 801                 strcat (wxBuffer, "Meta");
 802             s = p++;
 803         }
 804         else
 805         {
 806             strcat (wxBuffer, "<Key>");
 807             strcat (wxBuffer, s);
 808             break;
 809         }
 810     }
 811     delete[]tmp;
 812     return wxBuffer;
 813 #endif
 814 }
 815
 816 XmString wxFindAcceleratorText (const char *s)
 817 {
 818     // VZ: this function returns incorrect keysym which completely breaks kbd
 819     //     handling
 820     return NULL;
 821
 822 #if 0
 823    // The accelerator text is after the \t char.
 824     while (*s && *s != '\t')
 825         s++;
 826     if (*s == '\0')
 827         return (NULL);
 828     s++;
 829     XmString text = XmStringCreateSimple ((char *)s);
 830     return text;
 831 #endif
 832 }
 833
 834 // ----------------------------------------------------------------------------
 835 // keycode translations
 836 // ----------------------------------------------------------------------------
 837
 838 #include <X11/keysym.h>
 839
 840 // FIXME what about tables??
 841
 842 int wxCharCodeXToWX(KeySym keySym)
 843 {
 844     int id;
 845     switch (keySym)
 846     {
 847         case XK_Shift_L:
 848         case XK_Shift_R:
 849             id = WXK_SHIFT; break;
 850         case XK_Control_L:
 851         case XK_Control_R:
 852             id = WXK_CONTROL; break;
 853         case XK_BackSpace:
 854             id = WXK_BACK; break;
 855         case XK_Delete:
 856             id = WXK_DELETE; break;
 857         case XK_Clear:
 858             id = WXK_CLEAR; break;
 859         case XK_Tab:
 860             id = WXK_TAB; break;
 861         case XK_numbersign:
 862             id = '#'; break;
 863         case XK_Return:
 864             id = WXK_RETURN; break;
 865         case XK_Escape:
 866             id = WXK_ESCAPE; break;
 867         case XK_Pause:
 868         case XK_Break:
 869             id = WXK_PAUSE; break;
 870         case XK_Num_Lock:
 871             id = WXK_NUMLOCK; break;
 872         case XK_Scroll_Lock:
 873             id = WXK_SCROLL; break;
 874
 875         case XK_Home:
 876             id = WXK_HOME; break;
 877         case XK_End:
 878             id = WXK_END; break;
 879         case XK_Left:
 880             id = WXK_LEFT; break;
 881         case XK_Right:
 882             id = WXK_RIGHT; break;
 883         case XK_Up:
 884             id = WXK_UP; break;
 885         case XK_Down:
 886             id = WXK_DOWN; break;
 887         case XK_Next:
 888             id = WXK_NEXT; break;
 889         case XK_Prior:
 890             id = WXK_PRIOR; break;
 891         case XK_Menu:
 892             id = WXK_MENU; break;
 893         case XK_Select:
 894             id = WXK_SELECT; break;
 895         case XK_Cancel:
 896             id = WXK_CANCEL; break;
 897         case XK_Print:
 898             id = WXK_PRINT; break;
 899         case XK_Execute:
 900             id = WXK_EXECUTE; break;
 901         case XK_Insert:
 902             id = WXK_INSERT; break;
 903         case XK_Help:
 904             id = WXK_HELP; break;
 905
 906         case XK_KP_Multiply:
 907             id = WXK_MULTIPLY; break;
 908         case XK_KP_Add:
 909             id = WXK_ADD; break;
 910         case XK_KP_Subtract:
 911             id = WXK_SUBTRACT; break;
 912         case XK_KP_Divide:
 913             id = WXK_DIVIDE; break;
 914         case XK_KP_Decimal:
 915             id = WXK_DECIMAL; break;
 916         case XK_KP_Equal:
 917             id = '='; break;
 918         case XK_KP_Space:
 919             id = ' '; break;
 920         case XK_KP_Tab:
 921             id = WXK_TAB; break;
 922         case XK_KP_Enter:
 923             id = WXK_RETURN; break;
 924         case XK_KP_0:
 925             id = WXK_NUMPAD0; break;
 926         case XK_KP_1:
 927             id = WXK_NUMPAD1; break;
 928         case XK_KP_2:
 929             id = WXK_NUMPAD2; break;
 930         case XK_KP_3:
 931             id = WXK_NUMPAD3; break;
 932         case XK_KP_4:
 933             id = WXK_NUMPAD4; break;
 934         case XK_KP_5:
 935             id = WXK_NUMPAD5; break;
 936         case XK_KP_6:
 937             id = WXK_NUMPAD6; break;
 938         case XK_KP_7:
 939             id = WXK_NUMPAD7; break;
 940         case XK_KP_8:
 941             id = WXK_NUMPAD8; break;
 942         case XK_KP_9:
 943             id = WXK_NUMPAD9; break;
 944         case XK_F1:
 945             id = WXK_F1; break;
 946         case XK_F2:
 947             id = WXK_F2; break;
 948         case XK_F3:
 949             id = WXK_F3; break;
 950         case XK_F4:
 951             id = WXK_F4; break;
 952         case XK_F5:
 953             id = WXK_F5; break;
 954         case XK_F6:
 955             id = WXK_F6; break;
 956         case XK_F7:
 957             id = WXK_F7; break;
 958         case XK_F8:
 959             id = WXK_F8; break;
 960         case XK_F9:
 961             id = WXK_F9; break;
 962         case XK_F10:
 963             id = WXK_F10; break;
 964         case XK_F11:
 965             id = WXK_F11; break;
 966         case XK_F12:
 967             id = WXK_F12; break;
 968         case XK_F13:
 969             id = WXK_F13; break;
 970         case XK_F14:
 971             id = WXK_F14; break;
 972         case XK_F15:
 973             id = WXK_F15; break;
 974         case XK_F16:
 975             id = WXK_F16; break;
 976         case XK_F17:
 977             id = WXK_F17; break;
 978         case XK_F18:
 979             id = WXK_F18; break;
 980         case XK_F19:
 981             id = WXK_F19; break;
 982         case XK_F20:
 983             id = WXK_F20; break;
 984         case XK_F21:
 985             id = WXK_F21; break;
 986         case XK_F22:
 987             id = WXK_F22; break;
 988         case XK_F23:
 989             id = WXK_F23; break;
 990         case XK_F24:
 991             id = WXK_F24; break;
 992         default:
 993             id = (keySym <= 255) ? (int)keySym : -1;
 994     }
 995
 996     return id;
 997 }
 998
 999 KeySym wxCharCodeWXToX(int id)
1000 {
1001     KeySym keySym;
1002
1003     switch (id)
1004     {
1005         case WXK_CANCEL:            keySym = XK_Cancel; break;
1006         case WXK_BACK:              keySym = XK_BackSpace; break;
1007         case WXK_TAB:            keySym = XK_Tab; break;
1008         case WXK_CLEAR:        keySym = XK_Clear; break;
1009         case WXK_RETURN:        keySym = XK_Return; break;
1010         case WXK_SHIFT:        keySym = XK_Shift_L; break;
1011         case WXK_CONTROL:        keySym = XK_Control_L; break;
1012         case WXK_MENU :        keySym = XK_Menu; break;
1013         case WXK_PAUSE:        keySym = XK_Pause; break;
1014         case WXK_ESCAPE:        keySym = XK_Escape; break;
1015         case WXK_SPACE:        keySym = ' '; break;
1016         case WXK_PRIOR:        keySym = XK_Prior; break;
1017         case WXK_NEXT :        keySym = XK_Next; break;
1018         case WXK_END:        keySym = XK_End; break;
1019         case WXK_HOME :        keySym = XK_Home; break;
1020         case WXK_LEFT :        keySym = XK_Left; break;
1021         case WXK_UP:        keySym = XK_Up; break;
1022         case WXK_RIGHT:        keySym = XK_Right; break;
1023         case WXK_DOWN :        keySym = XK_Down; break;
1024         case WXK_SELECT:        keySym = XK_Select; break;
1025         case WXK_PRINT:        keySym = XK_Print; break;
1026         case WXK_EXECUTE:        keySym = XK_Execute; break;
1027         case WXK_INSERT:        keySym = XK_Insert; break;
1028         case WXK_DELETE:        keySym = XK_Delete; break;
1029         case WXK_HELP :        keySym = XK_Help; break;
1030         case WXK_NUMPAD0:        keySym = XK_KP_0; break;
1031         case WXK_NUMPAD1:        keySym = XK_KP_1; break;
1032         case WXK_NUMPAD2:        keySym = XK_KP_2; break;
1033         case WXK_NUMPAD3:        keySym = XK_KP_3; break;
1034         case WXK_NUMPAD4:        keySym = XK_KP_4; break;
1035         case WXK_NUMPAD5:        keySym = XK_KP_5; break;
1036         case WXK_NUMPAD6:        keySym = XK_KP_6; break;
1037         case WXK_NUMPAD7:        keySym = XK_KP_7; break;
1038         case WXK_NUMPAD8:        keySym = XK_KP_8; break;
1039         case WXK_NUMPAD9:        keySym = XK_KP_9; break;
1040         case WXK_MULTIPLY:        keySym = XK_KP_Multiply; break;
1041         case WXK_ADD:        keySym = XK_KP_Add; break;
1042         case WXK_SUBTRACT:        keySym = XK_KP_Subtract; break;
1043         case WXK_DECIMAL:        keySym = XK_KP_Decimal; break;
1044         case WXK_DIVIDE:        keySym = XK_KP_Divide; break;
1045         case WXK_F1:        keySym = XK_F1; break;
1046         case WXK_F2:        keySym = XK_F2; break;
1047         case WXK_F3:        keySym = XK_F3; break;
1048         case WXK_F4:        keySym = XK_F4; break;
1049         case WXK_F5:        keySym = XK_F5; break;
1050         case WXK_F6:        keySym = XK_F6; break;
1051         case WXK_F7:        keySym = XK_F7; break;
1052         case WXK_F8:        keySym = XK_F8; break;
1053         case WXK_F9:        keySym = XK_F9; break;
1054         case WXK_F10:        keySym = XK_F10; break;
1055         case WXK_F11:        keySym = XK_F11; break;
1056         case WXK_F12:        keySym = XK_F12; break;
1057         case WXK_F13:        keySym = XK_F13; break;
1058         case WXK_F14:        keySym = XK_F14; break;
1059         case WXK_F15:        keySym = XK_F15; break;
1060         case WXK_F16:        keySym = XK_F16; break;
1061         case WXK_F17:        keySym = XK_F17; break;
1062         case WXK_F18:        keySym = XK_F18; break;
1063         case WXK_F19:        keySym = XK_F19; break;
1064         case WXK_F20:        keySym = XK_F20; break;
1065         case WXK_F21:        keySym = XK_F21; break;
1066         case WXK_F22:        keySym = XK_F22; break;
1067         case WXK_F23:        keySym = XK_F23; break;
1068         case WXK_F24:        keySym = XK_F24; break;
1069         case WXK_NUMLOCK:    keySym = XK_Num_Lock; break;
1070         case WXK_SCROLL:     keySym = XK_Scroll_Lock; break;
1071         default:             keySym = id <= 255 ? (KeySym)id : 0;
1072     }
1073
1074     return keySym;
1075 }
1076
1077 // ----------------------------------------------------------------------------
1078 // Some colour manipulation routines
1079 // ----------------------------------------------------------------------------
1080
1081 void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
1082 {
1083     int h = hsv->h;
1084     int s = hsv->s;
1085     int v = hsv->v;
1086     int r = 0, g = 0, b = 0;
1087     int i, f;
1088     int p, q, t;
1089     s = (s * wxMAX_RGB) / wxMAX_SV;
1090     v = (v * wxMAX_RGB) / wxMAX_SV;
1091     if (h == 360) h = 0;
1092     if (s == 0) { h = 0; r = g = b = v; }
1093     i = h / 60;
1094     f = h % 60;
1095     p = v * (wxMAX_RGB - s) / wxMAX_RGB;
1096     q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
1097     t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
1098     switch (i)
1099     {
1100     case 0: r = v, g = t, b = p; break;
1101     case 1: r = q, g = v, b = p; break;
1102     case 2: r = p, g = v, b = t; break;
1103     case 3: r = p, g = q, b = v; break;
1104     case 4: r = t, g = p, b = v; break;
1105     case 5: r = v, g = p, b = q; break;
1106     }
1107     rgb->red = r << 8;
1108     rgb->green = g << 8;
1109     rgb->blue = b << 8;
1110 }
1111
1112 void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
1113 {
1114     int r = rgb->red >> 8;
1115     int g = rgb->green >> 8;
1116     int b = rgb->blue >> 8;
1117     int maxv = wxMax3(r, g, b);
1118     int minv = wxMin3(r, g, b);
1119     int h = 0, s, v;
1120     v = maxv;
1121     if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
1122     else s = 0;
1123     if (s == 0) h = 0;
1124     else
1125     {
1126         int rc, gc, bc, hex = 0;
1127         rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
1128         gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
1129         bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
1130         if (r == maxv) { h = bc - gc, hex = 0; }
1131         else if (g == maxv) { h = rc - bc, hex = 2; }
1132         else if (b == maxv) { h = gc - rc, hex = 4; }
1133         h = hex * 60 + (h * 60 / wxMAX_RGB);
1134         if (h < 0) h += 360;
1135     }
1136     hsv->h = h;
1137     hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
1138     hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
1139 }
1140
1141 void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
1142 {
1143     int llp;
1144
1145     int screen = DefaultScreen(d);
1146     int num_colors = DisplayCells(d,screen);
1147
1148     XColor *color_defs = new XColor[num_colors];
1149     for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
1150     XQueryColors(d,cmp,color_defs,num_colors);
1151
1152     wxHSV hsv_defs, hsv;
1153     wxXColorToHSV(&hsv,xc);
1154
1155     int diff, min_diff = 0, pixel = 0;
1156
1157     for(llp = 0;llp < num_colors;llp++)
1158     {
1159         wxXColorToHSV(&hsv_defs,&color_defs[llp]);
1160         diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
1161             wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
1162             wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
1163         if (llp == 0) min_diff = diff;
1164         if (min_diff > diff) { min_diff = diff; pixel = llp; }
1165         if (min_diff == 0) break;
1166     }
1167
1168     xc -> red = color_defs[pixel].red;
1169     xc -> green = color_defs[pixel].green;
1170     xc -> blue = color_defs[pixel].blue;
1171     xc -> flags = DoRed | DoGreen | DoBlue;
1172
1173 /*  FIXME, TODO
1174     if (!XAllocColor(d,cmp,xc))
1175         cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
1176 */
1177
1178     delete[] color_defs;
1179 }
1180
1181 void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
1182 {
1183     if (!XAllocColor(d,cmp,xc))
1184     {
1185         //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
1186         wxAllocNearestColor(d,cmp,xc);
1187     }
1188 }
1189