src/motif/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __VMS
  24 #define XtDisplay XTDISPLAY
  25 #endif
  26
  27 #include "wx/utils.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/dcmemory.h"
  32     #include "wx/bitmap.h"
  33 #endif
  34
  35 #include "wx/apptrait.h"
  36 #include "wx/evtloop.h"
  37
  38 #include <string.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 #include "wx/unix/execute.h"
  49
  50 #include <Xm/Xm.h>
  51 #include <Xm/Frame.h>
  52
  53 #include "wx/motif/private.h"
  54
  55 #if wxUSE_RESOURCES
  56 #include "X11/Xresource.h"
  57 #endif
  58
  59 #include "X11/Xutil.h"
  60
  61 #ifdef __VMS__
  62 #pragma message enable nosimpint
  63 #endif
  64
  65 // ----------------------------------------------------------------------------
  66 // private functions
  67 // ----------------------------------------------------------------------------
  68
  69 // Yuck this is really BOTH site and platform dependent
  70 // so we should use some other strategy!
  71 #ifdef sun
  72     #define DEFAULT_XRESOURCE_DIR "/usr/openwin/lib/app-defaults"
  73 #else
  74     #define DEFAULT_XRESOURCE_DIR "/usr/lib/X11/app-defaults"
  75 #endif
  76
  77 #if wxUSE_RESOURCES
  78 static char *GetIniFile (char *dest, const char *filename);
  79 #endif
  80
  81 // ============================================================================
  82 // implementation
  83 // ============================================================================
  84
  85 // ----------------------------------------------------------------------------
  86 // async event processing
  87 // ----------------------------------------------------------------------------
  88
  89 // Consume all events until no more left
  90 void wxFlushEvents(WXDisplay* wxdisplay)
  91 {
  92     Display *display = (Display*)wxdisplay;
  93     wxEventLoop evtLoop;
  94
  95     XSync (display, False);
  96
  97     while (evtLoop.Pending())
  98     {
  99         XFlush (display);
 100         evtLoop.Dispatch();
 101     }
 102 }
 103
 104 // ----------------------------------------------------------------------------
 105 // wxExecute stuff
 106 // ----------------------------------------------------------------------------
 107
 108 static void xt_notify_end_process(XtPointer data, int *WXUNUSED(fid),
 109                                   XtInputId *id)
 110 {
 111     wxEndProcessData *proc_data = (wxEndProcessData *)data;
 112
 113     wxHandleProcessTermination(proc_data);
 114
 115     // VZ: I think they should be the same...
 116     wxASSERT( (int)*id == proc_data->tag );
 117
 118     XtRemoveInput(*id);
 119 }
 120
 121 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 122 {
 123     XtInputId id = XtAppAddInput((XtAppContext) wxTheApp->GetAppContext(),
 124                                  fd,
 125                                  (XtPointer *) XtInputReadMask,
 126                                  (XtInputCallbackProc) xt_notify_end_process,
 127                                  (XtPointer) proc_data);
 128
 129     return (int)id;
 130 }
 131
 132 // ----------------------------------------------------------------------------
 133 // misc
 134 // ----------------------------------------------------------------------------
 135
 136 // Emit a beeeeeep
 137 #ifndef __EMX__
 138 // on OS/2, we use the wxBell from wxBase library (src/os2/utils.cpp)
 139 void wxBell()
 140 {
 141     // Use current setting for the bell
 142     XBell (wxGlobalDisplay(), 0);
 143 }
 144 #endif
 145
 146 wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
 147 {
 148     // XmVERSION and XmREVISION are defined in Xm/Xm.h
 149     if ( verMaj )
 150         *verMaj = XmVERSION;
 151     if ( verMin )
 152         *verMin = XmREVISION;
 153
 154     return wxPORT_MOTIF;
 155 }
 156
 157
 158 // ----------------------------------------------------------------------------
 159 // Reading and writing resources (eg WIN.INI, .Xdefaults)
 160 // ----------------------------------------------------------------------------
 161
 162 #if wxUSE_RESOURCES
 163
 164 // Read $HOME for what it says is home, if not
 165 // read $USER or $LOGNAME for user name else determine
 166 // the Real User, then determine the Real home dir.
 167 static char * GetIniFile (char *dest, const char *filename)
 168 {
 169     char *home = NULL;
 170     if (filename && wxIsAbsolutePath(filename))
 171     {
 172         strcpy(dest, filename);
 173     }
 174     else if ((home = wxGetUserHome()) != NULL)
 175     {
 176         strcpy(dest, home);
 177         if (dest[strlen(dest) - 1] != '/')
 178             strcat (dest, "/");
 179         if (filename == NULL)
 180         {
 181             if ((filename = getenv ("XENVIRONMENT")) == NULL)
 182                 filename = ".Xdefaults";
 183         }
 184         else if (*filename != '.')
 185             strcat (dest, ".");
 186         strcat (dest, filename);
 187     } else
 188     {
 189         dest[0] = '\0';
 190     }
 191     return dest;
 192 }
 193
 194 static char *GetResourcePath(char *buf, const char *name, bool create = false)
 195 {
 196     if (create && wxFileExists (name) ) {
 197         strcpy(buf, name);
 198         return buf; // Exists so ...
 199     }
 200
 201     if (*name == '/')
 202         strcpy(buf, name);
 203     else {
 204         // Put in standard place for resource files if not absolute
 205         strcpy (buf, DEFAULT_XRESOURCE_DIR);
 206         strcat (buf, "/");
 207         strcat (buf, wxFileNameFromPath (name).c_str());
 208     }
 209
 210     if (create) {
 211         // Touch the file to create it
 212         FILE *fd = fopen (buf, "w");
 213         if (fd) fclose (fd);
 214     }
 215     return buf;
 216 }
 217
 218 /*
 219 * We have a cache for writing different resource files,
 220 * which will only get flushed when we call wxFlushResources().
 221 * Build up a list of resource databases waiting to be written.
 222 *
 223 */
 224
 225 wxList wxResourceCache (wxKEY_STRING);
 226
 227 void
 228 wxFlushResources (void)
 229 {
 230     char nameBuffer[512];
 231
 232     wxNode *node = wxResourceCache.First ();
 233     while (node)
 234     {
 235         const char *file = node->GetKeyString();
 236         // If file doesn't exist, create it first.
 237         (void)GetResourcePath(nameBuffer, file, true);
 238
 239         XrmDatabase database = (XrmDatabase) node->Data ();
 240         XrmPutFileDatabase (database, nameBuffer);
 241         XrmDestroyDatabase (database);
 242         wxNode *next = node->Next ();
 243         delete node;
 244         node = next;
 245     }
 246 }
 247
 248 static XrmDatabase wxResourceDatabase = 0;
 249
 250 void wxXMergeDatabases (wxApp * theApp, Display * display);
 251
 252 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
 253 {
 254     char buffer[500];
 255
 256     (void) GetIniFile (buffer, file);
 257
 258     XrmDatabase database;
 259     wxNode *node = wxResourceCache.Find (buffer);
 260     if (node)
 261         database = (XrmDatabase) node->Data ();
 262     else
 263     {
 264         database = XrmGetFileDatabase (buffer);
 265         wxResourceCache.Append (buffer, (wxObject *) database);
 266     }
 267
 268     char resName[300];
 269     strcpy (resName, section.c_str());
 270     strcat (resName, ".");
 271     strcat (resName, entry.c_str());
 272
 273     XrmPutStringResource (&database, resName, value);
 274     return true;
 275 }
 276
 277 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
 278 {
 279     char buf[50];
 280     sprintf(buf, "%.4f", value);
 281     return wxWriteResource(section, entry, buf, file);
 282 }
 283
 284 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
 285 {
 286     char buf[50];
 287     sprintf(buf, "%ld", value);
 288     return wxWriteResource(section, entry, buf, file);
 289 }
 290
 291 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
 292 {
 293     char buf[50];
 294     sprintf(buf, "%d", value);
 295     return wxWriteResource(section, entry, buf, file);
 296 }
 297
 298 bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
 299 {
 300     if (!wxResourceDatabase)
 301     {
 302         Display *display = wxGlobalDisplay();
 303         wxXMergeDatabases (wxTheApp, display);
 304     }
 305
 306     XrmDatabase database;
 307
 308     if (!file.empty())
 309     {
 310         char buffer[500];
 311
 312         // Is this right? Trying to get it to look in the user's
 313         // home directory instead of current directory -- JACS
 314         (void) GetIniFile (buffer, file);
 315
 316         wxNode *node = wxResourceCache.Find (buffer);
 317         if (node)
 318             database = (XrmDatabase) node->Data ();
 319         else
 320         {
 321             database = XrmGetFileDatabase (buffer);
 322             wxResourceCache.Append (buffer, (wxObject *) database);
 323         }
 324     }
 325     else
 326         database = wxResourceDatabase;
 327
 328     XrmValue xvalue;
 329     char *str_type[20];
 330     char buf[150];
 331     strcpy (buf, section);
 332     strcat (buf, ".");
 333     strcat (buf, entry);
 334
 335     Bool success = XrmGetResource (database, buf, "*", str_type,
 336         &xvalue);
 337     // Try different combinations of upper/lower case, just in case...
 338     if (!success)
 339     {
 340         buf[0] = (isupper (buf[0]) ? tolower (buf[0]) : toupper (buf[0]));
 341         success = XrmGetResource (database, buf, "*", str_type,
 342             &xvalue);
 343     }
 344     if (success)
 345     {
 346         if (*value)
 347             delete[] *value;
 348
 349         *value = new char[xvalue.size + 1];
 350         strncpy (*value, xvalue.addr, (int) xvalue.size);
 351         return true;
 352     }
 353     return false;
 354 }
 355
 356 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
 357 {
 358     char *s = NULL;
 359     bool succ = wxGetResource(section, entry, (char **)&s, file);
 360     if (succ)
 361     {
 362         *value = (float)strtod(s, NULL);
 363         delete[] s;
 364         return true;
 365     }
 366     else return false;
 367 }
 368
 369 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
 370 {
 371     char *s = NULL;
 372     bool succ = wxGetResource(section, entry, (char **)&s, file);
 373     if (succ)
 374     {
 375         *value = strtol(s, NULL, 10);
 376         delete[] s;
 377         return true;
 378     }
 379     else return false;
 380 }
 381
 382 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
 383 {
 384     char *s = NULL;
 385     bool succ = wxGetResource(section, entry, (char **)&s, file);
 386     if (succ)
 387     {
 388         // Handle True, False here
 389         // True, Yes, Enables, Set or  Activated
 390         if (*s == 'T' || *s == 'Y' || *s == 'E' || *s == 'S' || *s == 'A')
 391             *value = true;
 392         // False, No, Disabled, Reset, Cleared, Deactivated
 393         else if (*s == 'F' || *s == 'N' || *s == 'D' || *s == 'R' || *s == 'C')
 394             *value = false;
 395         // Handle as Integer
 396         else
 397             *value = (int) strtol (s, NULL, 10);
 398         delete[] s;
 399         return true;
 400     }
 401     else
 402         return false;
 403 }
 404
 405 void wxXMergeDatabases (wxApp * theApp, Display * display)
 406 {
 407     XrmDatabase homeDB, serverDB, applicationDB;
 408     char filenamebuf[1024];
 409
 410     char *filename = &filenamebuf[0];
 411     char *environment;
 412     wxString classname = theApp->GetClassName();
 413     char name[256];
 414     (void) strcpy (name, "/usr/lib/X11/app-defaults/");
 415     (void) strcat (name, classname.c_str());
 416
 417     /* Get application defaults file, if any */
 418     applicationDB = XrmGetFileDatabase (name);
 419     (void) XrmMergeDatabases (applicationDB, &wxResourceDatabase);
 420
 421     /* Merge server defaults, created by xrdb, loaded as a property of the root
 422     * window when the server initializes and loaded into the display
 423     * structure on XOpenDisplay;
 424     * if not defined, use .Xdefaults
 425     */
 426
 427     if (XResourceManagerString (display) != NULL)
 428     {
 429         serverDB = XrmGetStringDatabase (XResourceManagerString (display));
 430     }
 431     else
 432     {
 433         (void) GetIniFile (filename, NULL);
 434         serverDB = XrmGetFileDatabase (filename);
 435     }
 436     XrmMergeDatabases (serverDB, &wxResourceDatabase);
 437
 438     /* Open XENVIRONMENT file, or if not defined, the .Xdefaults,
 439     * and merge into existing database
 440     */
 441
 442     if ((environment = getenv ("XENVIRONMENT")) == NULL)
 443     {
 444         size_t len;
 445         environment = GetIniFile (filename, NULL);
 446         len = strlen (environment);
 447         wxString hostname = wxGetHostName();
 448         if ( !hostname.empty() )
 449             strncat(environment, hostname, 1024 - len);
 450     }
 451     homeDB = XrmGetFileDatabase (environment);
 452     XrmMergeDatabases (homeDB, &wxResourceDatabase);
 453 }
 454
 455 #if 0
 456
 457 /*
 458 * Not yet used but may be useful.
 459 *
 460 */
 461 void
 462 wxSetDefaultResources (const Widget w, const char **resourceSpec, const char *name)
 463 {
 464     int i;
 465     Display *dpy = XtDisplay (w);    // Retrieve the display pointer
 466
 467     XrmDatabase rdb = NULL;    // A resource data base
 468
 469     // Create an empty resource database
 470     rdb = XrmGetStringDatabase ("");
 471
 472     // Add the Component resources, prepending the name of the component
 473
 474     i = 0;
 475     while (resourceSpec[i] != NULL)
 476     {
 477         char buf[1000];
 478
 479         sprintf (buf, "*%s%s", name, resourceSpec[i++]);
 480         XrmPutLineResource (&rdb, buf);
 481     }
 482
 483     // Merge them into the Xt database, with lowest precendence
 484
 485     if (rdb)
 486     {
 487 #if (XlibSpecificationRelease>=5)
 488         XrmDatabase db = XtDatabase (dpy);
 489         XrmCombineDatabase (rdb, &db, False);
 490 #else
 491         XrmMergeDatabases (dpy->db, &rdb);
 492         dpy->db = rdb;
 493 #endif
 494     }
 495 }
 496 #endif
 497 // 0
 498
 499 #endif // wxUSE_RESOURCES
 500
 501 // ----------------------------------------------------------------------------
 502 // display info
 503 // ----------------------------------------------------------------------------
 504
 505 void wxGetMousePosition( int* x, int* y )
 506 {
 507 #if wxUSE_NANOX
 508     // TODO
 509     *x = 0;
 510     *y = 0;
 511 #else
 512     XMotionEvent xev;
 513     Window root, child;
 514     XQueryPointer(wxGlobalDisplay(),
 515                   DefaultRootWindow(wxGlobalDisplay()),
 516                   &root, &child,
 517                   &(xev.x_root), &(xev.y_root),
 518                   &(xev.x),      &(xev.y),
 519                   &(xev.state));
 520     *x = xev.x_root;
 521     *y = xev.y_root;
 522 #endif
 523 }
 524
 525 // Return true if we have a colour display
 526 bool wxColourDisplay()
 527 {
 528     return wxDisplayDepth() > 1;
 529 }
 530
 531 // Returns depth of screen
 532 int wxDisplayDepth()
 533 {
 534     Display *dpy = wxGlobalDisplay();
 535
 536     return DefaultDepth (dpy, DefaultScreen (dpy));
 537 }
 538
 539 // Get size of display
 540 void wxDisplaySize(int *width, int *height)
 541 {
 542     Display *dpy = wxGlobalDisplay();
 543
 544     if ( width )
 545         *width = DisplayWidth (dpy, DefaultScreen (dpy));
 546     if ( height )
 547         *height = DisplayHeight (dpy, DefaultScreen (dpy));
 548 }
 549
 550 void wxDisplaySizeMM(int *width, int *height)
 551 {
 552     Display *dpy = wxGlobalDisplay();
 553
 554     if ( width )
 555         *width = DisplayWidthMM(dpy, DefaultScreen (dpy));
 556     if ( height )
 557         *height = DisplayHeightMM(dpy, DefaultScreen (dpy));
 558 }
 559
 560 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 561 {
 562     // This is supposed to return desktop dimensions minus any window
 563     // manager panels, menus, taskbars, etc.  If there is a way to do that
 564     // for this platform please fix this function, otherwise it defaults
 565     // to the entire desktop.
 566     if (x) *x = 0;
 567     if (y) *y = 0;
 568     wxDisplaySize(width, height);
 569 }
 570
 571
 572 // Configurable display in wxX11 and wxMotif
 573 static WXDisplay *gs_currentDisplay = NULL;
 574 static wxString gs_displayName;
 575
 576 WXDisplay *wxGetDisplay()
 577 {
 578     if (gs_currentDisplay)
 579         return gs_currentDisplay;
 580     else if (wxTheApp)
 581         return wxTheApp->GetInitialDisplay();
 582     return NULL;
 583 }
 584
 585 bool wxSetDisplay(const wxString& display_name)
 586 {
 587     gs_displayName = display_name;
 588
 589     if ( display_name.empty() )
 590     {
 591         gs_currentDisplay = NULL;
 592
 593         return true;
 594     }
 595     else
 596     {
 597         Cardinal argc = 0;
 598
 599         Display *display = XtOpenDisplay((XtAppContext) wxTheApp->GetAppContext(),
 600             display_name.c_str(),
 601             wxTheApp->GetAppName().c_str(),
 602             wxTheApp->GetClassName().c_str(),
 603             NULL,
 604 #if XtSpecificationRelease < 5
 605             0, &argc,
 606 #else
 607             0, (int *)&argc,
 608 #endif
 609             NULL);
 610
 611         if (display)
 612         {
 613             gs_currentDisplay = (WXDisplay*) display;
 614             return true;
 615         }
 616         else
 617             return false;
 618     }
 619 }
 620
 621 wxString wxGetDisplayName()
 622 {
 623     return gs_displayName;
 624 }
 625
 626 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 627 {
 628     return wxGenericFindWindowAtPoint(pt);
 629 }
 630
 631 // ----------------------------------------------------------------------------
 632 // Some colour manipulation routines
 633 // ----------------------------------------------------------------------------
 634
 635 void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
 636 {
 637     int h = hsv->h;
 638     int s = hsv->s;
 639     int v = hsv->v;
 640     int r = 0, g = 0, b = 0;
 641     int i, f;
 642     int p, q, t;
 643     s = (s * wxMAX_RGB) / wxMAX_SV;
 644     v = (v * wxMAX_RGB) / wxMAX_SV;
 645     if (h == 360) h = 0;
 646     if (s == 0) { h = 0; r = g = b = v; }
 647     i = h / 60;
 648     f = h % 60;
 649     p = v * (wxMAX_RGB - s) / wxMAX_RGB;
 650     q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
 651     t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
 652     switch (i)
 653     {
 654     case 0: r = v, g = t, b = p; break;
 655     case 1: r = q, g = v, b = p; break;
 656     case 2: r = p, g = v, b = t; break;
 657     case 3: r = p, g = q, b = v; break;
 658     case 4: r = t, g = p, b = v; break;
 659     case 5: r = v, g = p, b = q; break;
 660     }
 661     rgb->red = (unsigned short)(r << 8);
 662     rgb->green = (unsigned short)(g << 8);
 663     rgb->blue = (unsigned short)(b << 8);
 664 }
 665
 666 void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
 667 {
 668     int r = rgb->red >> 8;
 669     int g = rgb->green >> 8;
 670     int b = rgb->blue >> 8;
 671     int maxv = wxMax3(r, g, b);
 672     int minv = wxMin3(r, g, b);
 673     int h = 0, s, v;
 674     v = maxv;
 675     if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
 676     else s = 0;
 677     if (s == 0) h = 0;
 678     else
 679     {
 680         int rc, gc, bc, hex = 0;
 681         rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
 682         gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
 683         bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
 684         if (r == maxv) { h = bc - gc, hex = 0; }
 685         else if (g == maxv) { h = rc - bc, hex = 2; }
 686         else if (b == maxv) { h = gc - rc, hex = 4; }
 687         h = hex * 60 + (h * 60 / wxMAX_RGB);
 688         if (h < 0) h += 360;
 689     }
 690     hsv->h = h;
 691     hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
 692     hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
 693 }
 694
 695 void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
 696 {
 697 #if !wxUSE_NANOX
 698     int llp;
 699
 700     int screen = DefaultScreen(d);
 701     int num_colors = DisplayCells(d,screen);
 702
 703     XColor *color_defs = new XColor[num_colors];
 704     for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
 705     XQueryColors(d,cmp,color_defs,num_colors);
 706
 707     wxHSV hsv_defs, hsv;
 708     wxXColorToHSV(&hsv,xc);
 709
 710     int diff, min_diff = 0, pixel = 0;
 711
 712     for(llp = 0;llp < num_colors;llp++)
 713     {
 714         wxXColorToHSV(&hsv_defs,&color_defs[llp]);
 715         diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
 716             wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
 717             wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
 718         if (llp == 0) min_diff = diff;
 719         if (min_diff > diff) { min_diff = diff; pixel = llp; }
 720         if (min_diff == 0) break;
 721     }
 722
 723     xc -> red = color_defs[pixel].red;
 724     xc -> green = color_defs[pixel].green;
 725     xc -> blue = color_defs[pixel].blue;
 726     xc -> flags = DoRed | DoGreen | DoBlue;
 727
 728 /*  FIXME, TODO
 729     if (!XAllocColor(d,cmp,xc))
 730         cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
 731 */
 732
 733     delete[] color_defs;
 734 #endif
 735 }
 736
 737 void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
 738 {
 739     if (!XAllocColor(d,cmp,xc))
 740     {
 741         //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
 742         wxAllocNearestColor(d,cmp,xc);
 743     }
 744 }
 745
 746 #ifdef __WXDEBUG__
 747 wxString wxGetXEventName(XEvent& event)
 748 {
 749 #if wxUSE_NANOX
 750     wxString str(wxT("(some event)"));
 751     return str;
 752 #else
 753     int type = event.xany.type;
 754     static char* event_name[] = {
 755         wxMOTIF_STR(""), wxMOTIF_STR("unknown(-)"),                                         // 0-1
 756         wxMOTIF_STR("KeyPress"), wxMOTIF_STR("KeyRelease"), wxMOTIF_STR("ButtonPress"), wxMOTIF_STR("ButtonRelease"), // 2-5
 757         wxMOTIF_STR("MotionNotify"), wxMOTIF_STR("EnterNotify"), wxMOTIF_STR("LeaveNotify"), wxMOTIF_STR("FocusIn"),  // 6-9
 758         wxMOTIF_STR("FocusOut"), wxMOTIF_STR("KeymapNotify"), wxMOTIF_STR("Expose"), wxMOTIF_STR("GraphicsExpose"),   // 10-13
 759         wxMOTIF_STR("NoExpose"), wxMOTIF_STR("VisibilityNotify"), wxMOTIF_STR("CreateNotify"),           // 14-16
 760         wxMOTIF_STR("DestroyNotify"), wxMOTIF_STR("UnmapNotify"), wxMOTIF_STR("MapNotify"), wxMOTIF_STR("MapRequest"),// 17-20
 761         wxMOTIF_STR("ReparentNotify"), wxMOTIF_STR("ConfigureNotify"), wxMOTIF_STR("ConfigureRequest"),  // 21-23
 762         wxMOTIF_STR("GravityNotify"), wxMOTIF_STR("ResizeRequest"), wxMOTIF_STR("CirculateNotify"),      // 24-26
 763         wxMOTIF_STR("CirculateRequest"), wxMOTIF_STR("PropertyNotify"), wxMOTIF_STR("SelectionClear"),   // 27-29
 764         wxMOTIF_STR("SelectionRequest"), wxMOTIF_STR("SelectionNotify"), wxMOTIF_STR("ColormapNotify"),  // 30-32
 765         wxMOTIF_STR("ClientMessage"), wxMOTIF_STR("MappingNotify"),                         // 33-34
 766         wxMOTIF_STR("unknown(+)")};                                            // 35
 767     type = wxMin(35, type); type = wxMax(1, type);
 768     wxString str(event_name[type]);
 769     return str;
 770 #endif
 771 }
 772 #endif
 773
 774 // ----------------------------------------------------------------------------
 775 // accelerators
 776 // ----------------------------------------------------------------------------
 777
 778 // Find the letter corresponding to the mnemonic, for Motif
 779 char wxFindMnemonic (const char *s)
 780 {
 781     char mnem = 0;
 782     int len = strlen (s);
 783     int i;
 784
 785     for (i = 0; i < len; i++)
 786     {
 787         if (s[i] == '&')
 788         {
 789             // Carefully handle &&
 790             if ((i + 1) <= len && s[i + 1] == '&')
 791                 i++;
 792             else
 793             {
 794                 mnem = s[i + 1];
 795                 break;
 796             }
 797         }
 798     }
 799     return mnem;
 800 }
 801
 802 char* wxFindAccelerator( const char *s )
 803 {
 804 #if 1
 805     wxUnusedVar(s);
 806     // VZ: this function returns incorrect keysym which completely breaks kbd
 807     //     handling
 808     return NULL;
 809 #else
 810     // The accelerator text is after the \t char.
 811     s = strchr( s, '\t' );
 812
 813     if( !s ) return NULL;
 814
 815     /*
 816     Now we need to format it as X standard:
 817
 818       input            output
 819
 820         F7           --> <Key>F7
 821         Ctrl+N       --> Ctrl<Key>N
 822         Alt+k        --> Meta<Key>k
 823         Ctrl+Shift+A --> Ctrl Shift<Key>A
 824
 825         and handle Ctrl-N & similia
 826     */
 827
 828     static char buf[256];
 829
 830     buf[0] = '\0';
 831     wxString tmp = s + 1; // skip TAB
 832     size_t index = 0;
 833
 834     while( index < tmp.length() )
 835     {
 836         size_t plus  = tmp.find( '+', index );
 837         size_t minus = tmp.find( '-', index );
 838
 839         // neither '+' nor '-', add <Key>
 840         if( plus == wxString::npos && minus == wxString::npos )
 841         {
 842             strcat( buf, "<Key>" );
 843             strcat( buf, tmp.c_str() + index );
 844
 845             return buf;
 846         }
 847
 848         // OK: npos is big and positive
 849         size_t sep = wxMin( plus, minus );
 850         wxString mod = tmp.substr( index, sep - index );
 851
 852         // Ctrl  -> Ctrl
 853         // Shift -> Shift
 854         // Alt   -> Meta
 855         if( mod == "Alt" )
 856             mod = "Meta";
 857
 858         if( buf[0] )
 859             strcat( buf, " " );
 860
 861         strcat( buf, mod.c_str() );
 862
 863         index = sep + 1;
 864     }
 865
 866     return NULL;
 867 #endif
 868 }
 869
 870 XmString wxFindAcceleratorText (const char *s)
 871 {
 872 #if 1
 873     wxUnusedVar(s);
 874     // VZ: this function returns incorrect keysym which completely breaks kbd
 875     //     handling
 876     return NULL;
 877 #else
 878     // The accelerator text is after the \t char.
 879     s = strchr( s, '\t' );
 880
 881     if( !s ) return NULL;
 882
 883     return wxStringToXmString( s + 1 ); // skip TAB!
 884 #endif
 885 }
 886
 887 // Change a widget's foreground and background colours.
 888 void wxDoChangeForegroundColour(WXWidget widget, wxColour& foregroundColour)
 889 {
 890     // When should we specify the foreground, if it's calculated
 891     // by wxComputeColours?
 892     // Solution: say we start with the default (computed) foreground colour.
 893     // If we call SetForegroundColour explicitly for a control or window,
 894     // then the foreground is changed.
 895     // Therefore SetBackgroundColour computes the foreground colour, and
 896     // SetForegroundColour changes the foreground colour. The ordering is
 897     // important.
 898
 899     XtVaSetValues ((Widget) widget,
 900         XmNforeground, foregroundColour.AllocColour(XtDisplay((Widget) widget)),
 901         NULL);
 902 }
 903
 904 void wxDoChangeBackgroundColour(WXWidget widget, const wxColour& backgroundColour, bool changeArmColour)
 905 {
 906     wxComputeColours (XtDisplay((Widget) widget), & backgroundColour,
 907         (wxColour*) NULL);
 908
 909     XtVaSetValues ((Widget) widget,
 910         XmNbackground, g_itemColors[wxBACK_INDEX].pixel,
 911         XmNtopShadowColor, g_itemColors[wxTOPS_INDEX].pixel,
 912         XmNbottomShadowColor, g_itemColors[wxBOTS_INDEX].pixel,
 913         XmNforeground, g_itemColors[wxFORE_INDEX].pixel,
 914         NULL);
 915
 916     if (changeArmColour)
 917         XtVaSetValues ((Widget) widget,
 918         XmNarmColor, g_itemColors[wxSELE_INDEX].pixel,
 919         NULL);
 920 }
 921
 922 extern void wxDoChangeFont(WXWidget widget, const wxFont& font)
 923 {
 924     // Lesstif 0.87 hangs here, but 0.93 does not; MBN: sometimes it does
 925 #if !wxCHECK_LESSTIF() // || wxCHECK_LESSTIF_VERSION( 0, 93 )
 926     Widget w = (Widget)widget;
 927     XtVaSetValues( w,
 928                    wxFont::GetFontTag(), font.GetFontTypeC( XtDisplay(w) ),
 929                    NULL );
 930 #else
 931     wxUnusedVar(widget);
 932     wxUnusedVar(font);
 933 #endif
 934
 935 }
 936
 937 wxString wxXmStringToString( const XmString& xmString )
 938 {
 939     char *txt;
 940     if( XmStringGetLtoR( xmString, XmSTRING_DEFAULT_CHARSET, &txt ) )
 941     {
 942         wxString str(txt);
 943         XtFree (txt);
 944         return str;
 945     }
 946
 947     return wxEmptyString;
 948 }
 949
 950 XmString wxStringToXmString( const wxString& str )
 951 {
 952     return XmStringCreateLtoR((char *)str.c_str(), XmSTRING_DEFAULT_CHARSET);
 953 }
 954
 955 XmString wxStringToXmString( const char* str )
 956 {
 957     return XmStringCreateLtoR((char *)str, XmSTRING_DEFAULT_CHARSET);
 958 }
 959
 960 // ----------------------------------------------------------------------------
 961 // wxBitmap utility functions
 962 // ----------------------------------------------------------------------------
 963
 964 // Creates a bitmap with transparent areas drawn in
 965 // the given colour.
 966 wxBitmap wxCreateMaskedBitmap(const wxBitmap& bitmap, const wxColour& colour)
 967 {
 968     wxBitmap newBitmap(bitmap.GetWidth(),
 969                        bitmap.GetHeight(),
 970                        bitmap.GetDepth());
 971     wxMemoryDC destDC;
 972     wxMemoryDC srcDC;
 973
 974     srcDC.SelectObjectAsSource(bitmap);
 975     destDC.SelectObject(newBitmap);
 976
 977     wxBrush brush(colour, wxSOLID);
 978     destDC.SetBackground(brush);
 979     destDC.Clear();
 980     destDC.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(),
 981                 &srcDC, 0, 0, wxCOPY, true);
 982
 983     return newBitmap;
 984 }
 985
 986 // ----------------------------------------------------------------------------
 987 // Miscellaneous functions
 988 // ----------------------------------------------------------------------------
 989
 990 WXWidget wxCreateBorderWidget( WXWidget parent, long style )
 991 {
 992     Widget borderWidget = (Widget)NULL, parentWidget = (Widget)parent;
 993
 994     if (style & wxSIMPLE_BORDER)
 995     {
 996         borderWidget = XtVaCreateManagedWidget
 997                                    (
 998                                     "simpleBorder",
 999                                     xmFrameWidgetClass, parentWidget,
1000                                     XmNshadowType, XmSHADOW_ETCHED_IN,
1001                                     XmNshadowThickness, 1,
1002                                     NULL
1003                                    );
1004     }
1005     else if (style & wxSUNKEN_BORDER)
1006     {
1007         borderWidget = XtVaCreateManagedWidget
1008                                    (
1009                                     "sunkenBorder",
1010                                     xmFrameWidgetClass, parentWidget,
1011                                     XmNshadowType, XmSHADOW_IN,
1012                                     NULL
1013                                    );
1014     }
1015     else if (style & wxRAISED_BORDER)
1016     {
1017         borderWidget = XtVaCreateManagedWidget
1018                                    (
1019                                     "raisedBorder",
1020                                     xmFrameWidgetClass, parentWidget,
1021                                     XmNshadowType, XmSHADOW_OUT,
1022                                     NULL
1023                                    );
1024     }
1025
1026     return borderWidget;
1027 }