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 #include "X11/Xresource.h"
  56 #include "X11/Xutil.h"
  57
  58 // ----------------------------------------------------------------------------
  59 // private functions
  60 // ----------------------------------------------------------------------------
  61
  62 // Yuck this is really BOTH site and platform dependent
  63 // so we should use some other strategy!
  64 #ifdef sun
  65     #define DEFAULT_XRESOURCE_DIR "/usr/openwin/lib/app-defaults"
  66 #else
  67     #define DEFAULT_XRESOURCE_DIR "/usr/lib/X11/app-defaults"
  68 #endif
  69
  70 static char *GetIniFile (char *dest, const char *filename);
  71
  72 // ============================================================================
  73 // implementation
  74 // ============================================================================
  75
  76 // ----------------------------------------------------------------------------
  77 // async event processing
  78 // ----------------------------------------------------------------------------
  79
  80 // Consume all events until no more left
  81 void wxFlushEvents()
  82 {
  83     Display *display = (Display*) wxGetDisplay();
  84
  85     XSync (display, FALSE);
  86     XFlush(display);
  87
  88     // TODO
  89 #if 0
  90
  91     // XtAppPending returns availability of events AND timers/inputs, which
  92     // are processed via callbacks, so XtAppNextEvent will not return if
  93     // there are no events. So added '& XtIMXEvent' - Sergey.
  94     while (XtAppPending ((XtAppContext) wxTheApp->GetAppContext()) & XtIMXEvent)
  95     {
  96         XFlush (XtDisplay ((Widget) wxTheApp->GetTopLevelWidget()));
  97         // Jan Lessner: works better when events are non-X events
  98         XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMXEvent);
  99     }
 100 #endif
 101 }
 102
 103 // Check whether this window wants to process messages, e.g. Stop button
 104 // in long calculations.
 105 bool wxCheckForInterrupt(wxWindow *wnd)
 106 {
 107     wxASSERT_MSG(FALSE, "wxCheckForInterrupt not yet implemented.");
 108     return FALSE;
 109 #if 0
 110     wxCHECK_MSG( wnd, FALSE, "NULL window in wxCheckForInterrupt" );
 111
 112     Display *dpy=(Display*) wnd->GetXDisplay();
 113     Window win=(Window) wnd->GetXWindow();
 114     XEvent event;
 115     XFlush(dpy);
 116     if (wnd->GetMainWidget())
 117     {
 118         XmUpdateDisplay((Widget)(wnd->GetMainWidget()));
 119     }
 120
 121     bool hadEvents = FALSE;
 122     while( XCheckMaskEvent(dpy,
 123                            ButtonPressMask|ButtonReleaseMask|ButtonMotionMask|
 124                            PointerMotionMask|KeyPressMask|KeyReleaseMask,
 125                            &event) )
 126     {
 127         if ( event.xany.window == win )
 128         {
 129             hadEvents = TRUE;
 130
 131             XtDispatchEvent(&event);
 132         }
 133     }
 134
 135     return hadEvents;
 136 #endif
 137 }
 138
 139 // ----------------------------------------------------------------------------
 140 // wxExecute stuff
 141 // ----------------------------------------------------------------------------
 142 #if 0
 143 static void xt_notify_end_process(XtPointer data, int *WXUNUSED(fid),
 144                                   XtInputId *id)
 145 {
 146     wxEndProcessData *proc_data = (wxEndProcessData *)data;
 147
 148     wxHandleProcessTermination(proc_data);
 149
 150     // VZ: I think they should be the same...
 151     wxASSERT( (int)*id == proc_data->tag );
 152
 153     XtRemoveInput(*id);
 154 }
 155 #endif
 156
 157 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
 158 {
 159 #if 0
 160     XtInputId id = XtAppAddInput((XtAppContext) wxTheApp->GetAppContext(),
 161                                  fd,
 162                                  (XtPointer *) XtInputReadMask,
 163                                  (XtInputCallbackProc) xt_notify_end_process,
 164                                  (XtPointer) proc_data);
 165
 166     return (int)id;
 167 #endif
 168 }
 169
 170 // ----------------------------------------------------------------------------
 171 // misc
 172 // ----------------------------------------------------------------------------
 173
 174 // Emit a beeeeeep
 175 void wxBell()
 176 {
 177     // Use current setting for the bell
 178     XBell ((Display*) wxGetDisplay(), 0);
 179 }
 180
 181 int wxGetOsVersion(int *majorVsn, int *minorVsn)
 182 {
 183 #if 0
 184     // FIXME TODO
 185     // This code is WRONG!! Does NOT return the
 186     // Motif version of the libs but the X protocol
 187     // version!
 188     Display *display = XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
 189     if (majorVsn)
 190         *majorVsn = ProtocolVersion (display);
 191     if (minorVsn)
 192         *minorVsn = ProtocolRevision (display);
 193
 194     return wxMOTIF_X;
 195 #else
 196     if (majorVsn)
 197         *majorVsn = 0;
 198     if (minorVsn)
 199         *minorVsn = 0;
 200     return wxX11;
 201 #endif
 202 }
 203
 204 // ----------------------------------------------------------------------------
 205 // Reading and writing resources (eg WIN.INI, .Xdefaults)
 206 // ----------------------------------------------------------------------------
 207
 208 // Read $HOME for what it says is home, if not
 209 // read $USER or $LOGNAME for user name else determine
 210 // the Real User, then determine the Real home dir.
 211 static char * GetIniFile (char *dest, const char *filename)
 212 {
 213     char *home = NULL;
 214     if (filename && wxIsAbsolutePath(filename))
 215     {
 216         strcpy(dest, filename);
 217     }
 218     else if ((home = wxGetUserHome("")) != NULL)
 219     {
 220         strcpy(dest, home);
 221         if (dest[strlen(dest) - 1] != '/')
 222             strcat (dest, "/");
 223         if (filename == NULL)
 224         {
 225             if ((filename = getenv ("XENVIRONMENT")) == NULL)
 226                 filename = ".Xdefaults";
 227         }
 228         else if (*filename != '.')
 229             strcat (dest, ".");
 230         strcat (dest, filename);
 231     } else
 232     {
 233         dest[0] = '\0';
 234     }
 235     return dest;
 236 }
 237
 238 #if wxUSE_RESOURCES
 239
 240 static char *GetResourcePath(char *buf, const char *name, bool create = FALSE)
 241 {
 242     if (create && wxFileExists (name) ) {
 243         strcpy(buf, name);
 244         return buf; // Exists so ...
 245     }
 246
 247     if (*name == '/')
 248         strcpy(buf, name);
 249     else {
 250         // Put in standard place for resource files if not absolute
 251         strcpy (buf, DEFAULT_XRESOURCE_DIR);
 252         strcat (buf, "/");
 253         strcat (buf, (const char*) wxFileNameFromPath (name));
 254     }
 255
 256     if (create) {
 257         // Touch the file to create it
 258         FILE *fd = fopen (buf, "w");
 259         if (fd) fclose (fd);
 260     }
 261     return buf;
 262 }
 263
 264 /*
 265 * We have a cache for writing different resource files,
 266 * which will only get flushed when we call wxFlushResources().
 267 * Build up a list of resource databases waiting to be written.
 268 *
 269 */
 270
 271 wxList wxResourceCache (wxKEY_STRING);
 272
 273 void
 274 wxFlushResources (void)
 275 {
 276     char nameBuffer[512];
 277
 278     wxNode *node = wxResourceCache.First ();
 279     while (node)
 280     {
 281         const char *file = node->GetKeyString();
 282         // If file doesn't exist, create it first.
 283         (void)GetResourcePath(nameBuffer, file, TRUE);
 284
 285         XrmDatabase database = (XrmDatabase) node->Data ();
 286         XrmPutFileDatabase (database, nameBuffer);
 287         XrmDestroyDatabase (database);
 288         wxNode *next = node->Next ();
 289         delete node;
 290         node = next;
 291     }
 292 }
 293
 294 static XrmDatabase wxResourceDatabase = 0;
 295
 296 void wxXMergeDatabases (wxApp * theApp, Display * display);
 297
 298 bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
 299 {
 300     char buffer[500];
 301
 302     (void) GetIniFile (buffer, file);
 303
 304     XrmDatabase database;
 305     wxNode *node = wxResourceCache.Find (buffer);
 306     if (node)
 307         database = (XrmDatabase) node->Data ();
 308     else
 309     {
 310         database = XrmGetFileDatabase (buffer);
 311         wxResourceCache.Append (buffer, (wxObject *) database);
 312     }
 313
 314     char resName[300];
 315     strcpy (resName, (const char*) section);
 316     strcat (resName, ".");
 317     strcat (resName, (const char*) entry);
 318
 319     XrmPutStringResource (&database, resName, value);
 320     return TRUE;
 321 }
 322
 323 bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
 324 {
 325     char buf[50];
 326     sprintf(buf, "%.4f", value);
 327     return wxWriteResource(section, entry, buf, file);
 328 }
 329
 330 bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
 331 {
 332     char buf[50];
 333     sprintf(buf, "%ld", value);
 334     return wxWriteResource(section, entry, buf, file);
 335 }
 336
 337 bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
 338 {
 339     char buf[50];
 340     sprintf(buf, "%d", value);
 341     return wxWriteResource(section, entry, buf, file);
 342 }
 343
 344 bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
 345 {
 346     if (!wxResourceDatabase)
 347     {
 348         Display *display = (Display*) wxGetDisplay();
 349         wxXMergeDatabases (wxTheApp, display);
 350     }
 351
 352     XrmDatabase database;
 353
 354     if (file != "")
 355     {
 356         char buffer[500];
 357
 358         // Is this right? Trying to get it to look in the user's
 359         // home directory instead of current directory -- JACS
 360         (void) GetIniFile (buffer, file);
 361
 362         wxNode *node = wxResourceCache.Find (buffer);
 363         if (node)
 364             database = (XrmDatabase) node->Data ();
 365         else
 366         {
 367             database = XrmGetFileDatabase (buffer);
 368             wxResourceCache.Append (buffer, (wxObject *) database);
 369         }
 370     }
 371     else
 372         database = wxResourceDatabase;
 373
 374     XrmValue xvalue;
 375     char *str_type[20];
 376     char buf[150];
 377     strcpy (buf, section);
 378     strcat (buf, ".");
 379     strcat (buf, entry);
 380
 381     Bool success = XrmGetResource (database, buf, "*", str_type,
 382         &xvalue);
 383     // Try different combinations of upper/lower case, just in case...
 384     if (!success)
 385     {
 386         buf[0] = (isupper (buf[0]) ? tolower (buf[0]) : toupper (buf[0]));
 387         success = XrmGetResource (database, buf, "*", str_type,
 388             &xvalue);
 389     }
 390     if (success)
 391     {
 392         if (*value)
 393             delete[] *value;
 394
 395         *value = new char[xvalue.size + 1];
 396         strncpy (*value, xvalue.addr, (int) xvalue.size);
 397         return TRUE;
 398     }
 399     return FALSE;
 400 }
 401
 402 bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
 403 {
 404     char *s = NULL;
 405     bool succ = wxGetResource(section, entry, (char **)&s, file);
 406     if (succ)
 407     {
 408         *value = (float)strtod(s, NULL);
 409         delete[] s;
 410         return TRUE;
 411     }
 412     else return FALSE;
 413 }
 414
 415 bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
 416 {
 417     char *s = NULL;
 418     bool succ = wxGetResource(section, entry, (char **)&s, file);
 419     if (succ)
 420     {
 421         *value = strtol(s, NULL, 10);
 422         delete[] s;
 423         return TRUE;
 424     }
 425     else return FALSE;
 426 }
 427
 428 bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
 429 {
 430     char *s = NULL;
 431     bool succ = wxGetResource(section, entry, (char **)&s, file);
 432     if (succ)
 433     {
 434         // Handle True, False here
 435         // True, Yes, Enables, Set or  Activated
 436         if (*s == 'T' || *s == 'Y' || *s == 'E' || *s == 'S' || *s == 'A')
 437             *value = TRUE;
 438         // False, No, Disabled, Reset, Cleared, Deactivated
 439         else if (*s == 'F' || *s == 'N' || *s == 'D' || *s == 'R' || *s == 'C')
 440             *value = FALSE;
 441         // Handle as Integer
 442         else
 443             *value = (int) strtol (s, NULL, 10);
 444         delete[] s;
 445         return TRUE;
 446     }
 447     else
 448         return FALSE;
 449 }
 450
 451 void wxXMergeDatabases (wxApp * theApp, Display * display)
 452 {
 453     XrmDatabase homeDB, serverDB, applicationDB;
 454     char filenamebuf[1024];
 455
 456     char *filename = &filenamebuf[0];
 457     char *environment;
 458     wxString classname = theApp->GetClassName();
 459     char name[256];
 460     (void) strcpy (name, "/usr/lib/X11/app-defaults/");
 461     (void) strcat (name, (const char*) classname);
 462
 463     /* Get application defaults file, if any */
 464     applicationDB = XrmGetFileDatabase (name);
 465     (void) XrmMergeDatabases (applicationDB, &wxResourceDatabase);
 466
 467     /* Merge server defaults, created by xrdb, loaded as a property of the root
 468     * window when the server initializes and loaded into the display
 469     * structure on XOpenDisplay;
 470     * if not defined, use .Xdefaults
 471     */
 472
 473     if (XResourceManagerString (display) != NULL)
 474     {
 475         serverDB = XrmGetStringDatabase (XResourceManagerString (display));
 476     }
 477     else
 478     {
 479         (void) GetIniFile (filename, NULL);
 480         serverDB = XrmGetFileDatabase (filename);
 481     }
 482     XrmMergeDatabases (serverDB, &wxResourceDatabase);
 483
 484     /* Open XENVIRONMENT file, or if not defined, the .Xdefaults,
 485     * and merge into existing database
 486     */
 487
 488     if ((environment = getenv ("XENVIRONMENT")) == NULL)
 489     {
 490         size_t len;
 491         environment = GetIniFile (filename, NULL);
 492         len = strlen (environment);
 493         wxString hostname = wxGetHostName();
 494         if ( !!hostname )
 495             strncat(environment, hostname, 1024 - len);
 496     }
 497     homeDB = XrmGetFileDatabase (environment);
 498     XrmMergeDatabases (homeDB, &wxResourceDatabase);
 499 }
 500
 501 #if 0
 502
 503 /*
 504 * Not yet used but may be useful.
 505 *
 506 */
 507 void
 508 wxSetDefaultResources (const Widget w, const char **resourceSpec, const char *name)
 509 {
 510     int i;
 511     Display *dpy = XtDisplay (w);    // Retrieve the display pointer
 512
 513     XrmDatabase rdb = NULL;    // A resource data base
 514
 515     // Create an empty resource database
 516     rdb = XrmGetStringDatabase ("");
 517
 518     // Add the Component resources, prepending the name of the component
 519
 520     i = 0;
 521     while (resourceSpec[i] != NULL)
 522     {
 523         char buf[1000];
 524
 525         sprintf (buf, "*%s%s", name, resourceSpec[i++]);
 526         XrmPutLineResource (&rdb, buf);
 527     }
 528
 529     // Merge them into the Xt database, with lowest precendence
 530
 531     if (rdb)
 532     {
 533 #if (XlibSpecificationRelease>=5)
 534         XrmDatabase db = XtDatabase (dpy);
 535         XrmCombineDatabase (rdb, &db, FALSE);
 536 #else
 537         XrmMergeDatabases (dpy->db, &rdb);
 538         dpy->db = rdb;
 539 #endif
 540     }
 541 }
 542 #endif
 543 // 0
 544
 545 #endif // wxUSE_RESOURCES
 546
 547 // ----------------------------------------------------------------------------
 548 // busy cursor stuff
 549 // ----------------------------------------------------------------------------
 550
 551 static int wxBusyCursorCount = 0;
 552
 553 // Helper function
 554 static void
 555 wxXSetBusyCursor (wxWindow * win, wxCursor * cursor)
 556 {
 557     Display *display = (Display*) win->GetXDisplay();
 558
 559     Window xwin = (Window) win->GetXWindow();
 560     if (!xwin)
 561        return;
 562
 563     XSetWindowAttributes attrs;
 564
 565     if (cursor)
 566     {
 567         attrs.cursor = (Cursor) cursor->GetXCursor(display);
 568     }
 569     else
 570     {
 571         // Restore old cursor
 572         if (win->GetCursor().Ok())
 573             attrs.cursor = (Cursor) win->GetCursor().GetXCursor(display);
 574         else
 575             attrs.cursor = None;
 576     }
 577     if (xwin)
 578         XChangeWindowAttributes (display, xwin, CWCursor, &attrs);
 579
 580     XFlush (display);
 581
 582     for(wxNode *node = win->GetChildren().First (); node; node = node->Next())
 583     {
 584         wxWindow *child = (wxWindow *) node->Data ();
 585         wxXSetBusyCursor (child, cursor);
 586     }
 587 }
 588
 589 // Set the cursor to the busy cursor for all windows
 590 void wxBeginBusyCursor(wxCursor *cursor)
 591 {
 592     wxBusyCursorCount++;
 593     if (wxBusyCursorCount == 1)
 594     {
 595         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 596         {
 597             wxWindow *win = (wxWindow *) node->Data ();
 598             wxXSetBusyCursor (win, cursor);
 599         }
 600     }
 601 }
 602
 603 // Restore cursor to normal
 604 void wxEndBusyCursor()
 605 {
 606     if (wxBusyCursorCount == 0)
 607         return;
 608
 609     wxBusyCursorCount--;
 610     if (wxBusyCursorCount == 0)
 611     {
 612         for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
 613         {
 614             wxWindow *win = (wxWindow *) node->Data ();
 615             wxXSetBusyCursor (win, NULL);
 616         }
 617     }
 618 }
 619
 620 // TRUE if we're between the above two calls
 621 bool wxIsBusy()
 622 {
 623     return (wxBusyCursorCount > 0);
 624 }
 625
 626 // ----------------------------------------------------------------------------
 627 // display info
 628 // ----------------------------------------------------------------------------
 629
 630 void wxGetMousePosition( int* x, int* y )
 631 {
 632     XMotionEvent xev;
 633     Window root, child;
 634     XQueryPointer((Display*) wxGetDisplay(),
 635                   DefaultRootWindow((Display*) wxGetDisplay()),
 636                   &root, &child,
 637                   &(xev.x_root), &(xev.y_root),
 638                   &(xev.x),      &(xev.y),
 639                   &(xev.state));
 640     *x = xev.x_root;
 641     *y = xev.y_root;
 642 };
 643
 644 // Return TRUE if we have a colour display
 645 bool wxColourDisplay()
 646 {
 647     return wxDisplayDepth() > 1;
 648 }
 649
 650 // Returns depth of screen
 651 int wxDisplayDepth()
 652 {
 653     Display *dpy = (Display*) wxGetDisplay();
 654
 655     return DefaultDepth (dpy, DefaultScreen (dpy));
 656 }
 657
 658 // Get size of display
 659 void wxDisplaySize(int *width, int *height)
 660 {
 661     Display *dpy = (Display*) wxGetDisplay();
 662
 663     if ( width )
 664         *width = DisplayWidth (dpy, DefaultScreen (dpy));
 665     if ( height )
 666         *height = DisplayHeight (dpy, DefaultScreen (dpy));
 667 }
 668
 669 void wxDisplaySizeMM(int *width, int *height)
 670 {
 671     Display *dpy = (Display*) wxGetDisplay();
 672
 673     if ( width )
 674         *width = DisplayWidthMM(dpy, DefaultScreen (dpy));
 675     if ( height )
 676         *height = DisplayHeightMM(dpy, DefaultScreen (dpy));
 677 }
 678
 679 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 680 {
 681     // This is supposed to return desktop dimensions minus any window
 682     // manager panels, menus, taskbars, etc.  If there is a way to do that
 683     // for this platform please fix this function, otherwise it defaults
 684     // to the entire desktop.
 685     if (x) *x = 0;
 686     if (y) *y = 0;
 687     wxDisplaySize(width, height);
 688 }
 689
 690
 691 // Configurable display in X11
 692 static WXDisplay *gs_currentDisplay = NULL;
 693 static wxString gs_displayName;
 694
 695 WXDisplay *wxGetDisplay()
 696 {
 697     if (gs_currentDisplay)
 698         return gs_currentDisplay;
 699     else if (wxTheApp)
 700         return wxTheApp->GetInitialDisplay();
 701     else
 702         return (WXDisplay*) NULL;
 703 }
 704
 705 bool wxSetDisplay(const wxString& display_name)
 706 {
 707     gs_displayName = display_name;
 708
 709     if ( display_name.IsEmpty() )
 710     {
 711         gs_currentDisplay = NULL;
 712
 713         return TRUE;
 714     }
 715     else
 716     {
 717         Display* display = XOpenDisplay((const char*) display_name);
 718
 719         if (display)
 720         {
 721             gs_currentDisplay = (WXDisplay*) display;
 722             return TRUE;
 723         }
 724         else
 725             return FALSE;
 726     }
 727 }
 728
 729 wxString wxGetDisplayName()
 730 {
 731     return gs_displayName;
 732 }
 733
 734 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 735 {
 736     return wxGenericFindWindowAtPoint(pt);
 737 }
 738
 739 // ----------------------------------------------------------------------------
 740 // accelerators
 741 // ----------------------------------------------------------------------------
 742
 743 // Find the letter corresponding to the mnemonic, for Motif
 744 char wxFindMnemonic (const char *s)
 745 {
 746     char mnem = 0;
 747     int len = strlen (s);
 748     int i;
 749     for (i = 0; i < len; i++)
 750     {
 751         if (s[i] == '&')
 752         {
 753             // Carefully handle &&
 754             if ((i + 1) <= len && s[i + 1] == '&')
 755                 i++;
 756             else
 757             {
 758                 mnem = s[i + 1];
 759                 break;
 760             }
 761         }
 762     }
 763     return mnem;
 764 }
 765
 766 char * wxFindAccelerator (const char *s)
 767 {
 768     // VZ: this function returns incorrect keysym which completely breaks kbd
 769     //     handling
 770     return NULL;
 771
 772 #if 0
 773    // The accelerator text is after the \t char.
 774     while (*s && *s != '\t')
 775         s++;
 776     if (*s == '\0')
 777         return (NULL);
 778     s++;
 779     /*
 780     Now we need to format it as X standard:
 781
 782       input            output
 783
 784         F7           --> <Key>F7
 785         Ctrl+N       --> Ctrl<Key>N
 786         Alt+k        --> Meta<Key>k
 787         Ctrl+Shift+A --> Ctrl Shift<Key>A
 788
 789     */
 790
 791     wxBuffer[0] = '\0';
 792     char *tmp = copystring (s);
 793     s = tmp;
 794     char *p = tmp;
 795
 796     while (1)
 797     {
 798         while (*p && *p != '+')
 799             p++;
 800         if (*p)
 801         {
 802             *p = '\0';
 803             if (wxBuffer[0])
 804                 strcat (wxBuffer, " ");
 805             if (strcmp (s, "Alt"))
 806                 strcat (wxBuffer, s);
 807             else
 808                 strcat (wxBuffer, "Meta");
 809             s = p++;
 810         }
 811         else
 812         {
 813             strcat (wxBuffer, "<Key>");
 814             strcat (wxBuffer, s);
 815             break;
 816         }
 817     }
 818     delete[]tmp;
 819     return wxBuffer;
 820 #endif
 821 }
 822
 823 // ----------------------------------------------------------------------------
 824 // keycode translations
 825 // ----------------------------------------------------------------------------
 826
 827 #include <X11/keysym.h>
 828
 829 // FIXME what about tables??
 830
 831 int wxCharCodeXToWX(KeySym keySym)
 832 {
 833     int id;
 834     switch (keySym)
 835     {
 836         case XK_Shift_L:
 837         case XK_Shift_R:
 838             id = WXK_SHIFT; break;
 839         case XK_Control_L:
 840         case XK_Control_R:
 841             id = WXK_CONTROL; break;
 842         case XK_BackSpace:
 843             id = WXK_BACK; break;
 844         case XK_Delete:
 845             id = WXK_DELETE; break;
 846         case XK_Clear:
 847             id = WXK_CLEAR; break;
 848         case XK_Tab:
 849             id = WXK_TAB; break;
 850         case XK_numbersign:
 851             id = '#'; break;
 852         case XK_Return:
 853             id = WXK_RETURN; break;
 854         case XK_Escape:
 855             id = WXK_ESCAPE; break;
 856         case XK_Pause:
 857         case XK_Break:
 858             id = WXK_PAUSE; break;
 859         case XK_Num_Lock:
 860             id = WXK_NUMLOCK; break;
 861         case XK_Scroll_Lock:
 862             id = WXK_SCROLL; break;
 863
 864         case XK_Home:
 865             id = WXK_HOME; break;
 866         case XK_End:
 867             id = WXK_END; break;
 868         case XK_Left:
 869             id = WXK_LEFT; break;
 870         case XK_Right:
 871             id = WXK_RIGHT; break;
 872         case XK_Up:
 873             id = WXK_UP; break;
 874         case XK_Down:
 875             id = WXK_DOWN; break;
 876         case XK_Next:
 877             id = WXK_NEXT; break;
 878         case XK_Prior:
 879             id = WXK_PRIOR; break;
 880         case XK_Menu:
 881             id = WXK_MENU; break;
 882         case XK_Select:
 883             id = WXK_SELECT; break;
 884         case XK_Cancel:
 885             id = WXK_CANCEL; break;
 886         case XK_Print:
 887             id = WXK_PRINT; break;
 888         case XK_Execute:
 889             id = WXK_EXECUTE; break;
 890         case XK_Insert:
 891             id = WXK_INSERT; break;
 892         case XK_Help:
 893             id = WXK_HELP; break;
 894
 895         case XK_KP_Multiply:
 896             id = WXK_MULTIPLY; break;
 897         case XK_KP_Add:
 898             id = WXK_ADD; break;
 899         case XK_KP_Subtract:
 900             id = WXK_SUBTRACT; break;
 901         case XK_KP_Divide:
 902             id = WXK_DIVIDE; break;
 903         case XK_KP_Decimal:
 904             id = WXK_DECIMAL; break;
 905         case XK_KP_Equal:
 906             id = '='; break;
 907         case XK_KP_Space:
 908             id = ' '; break;
 909         case XK_KP_Tab:
 910             id = WXK_TAB; break;
 911         case XK_KP_Enter:
 912             id = WXK_RETURN; break;
 913         case XK_KP_0:
 914             id = WXK_NUMPAD0; break;
 915         case XK_KP_1:
 916             id = WXK_NUMPAD1; break;
 917         case XK_KP_2:
 918             id = WXK_NUMPAD2; break;
 919         case XK_KP_3:
 920             id = WXK_NUMPAD3; break;
 921         case XK_KP_4:
 922             id = WXK_NUMPAD4; break;
 923         case XK_KP_5:
 924             id = WXK_NUMPAD5; break;
 925         case XK_KP_6:
 926             id = WXK_NUMPAD6; break;
 927         case XK_KP_7:
 928             id = WXK_NUMPAD7; break;
 929         case XK_KP_8:
 930             id = WXK_NUMPAD8; break;
 931         case XK_KP_9:
 932             id = WXK_NUMPAD9; break;
 933         case XK_F1:
 934             id = WXK_F1; break;
 935         case XK_F2:
 936             id = WXK_F2; break;
 937         case XK_F3:
 938             id = WXK_F3; break;
 939         case XK_F4:
 940             id = WXK_F4; break;
 941         case XK_F5:
 942             id = WXK_F5; break;
 943         case XK_F6:
 944             id = WXK_F6; break;
 945         case XK_F7:
 946             id = WXK_F7; break;
 947         case XK_F8:
 948             id = WXK_F8; break;
 949         case XK_F9:
 950             id = WXK_F9; break;
 951         case XK_F10:
 952             id = WXK_F10; break;
 953         case XK_F11:
 954             id = WXK_F11; break;
 955         case XK_F12:
 956             id = WXK_F12; break;
 957         case XK_F13:
 958             id = WXK_F13; break;
 959         case XK_F14:
 960             id = WXK_F14; break;
 961         case XK_F15:
 962             id = WXK_F15; break;
 963         case XK_F16:
 964             id = WXK_F16; break;
 965         case XK_F17:
 966             id = WXK_F17; break;
 967         case XK_F18:
 968             id = WXK_F18; break;
 969         case XK_F19:
 970             id = WXK_F19; break;
 971         case XK_F20:
 972             id = WXK_F20; break;
 973         case XK_F21:
 974             id = WXK_F21; break;
 975         case XK_F22:
 976             id = WXK_F22; break;
 977         case XK_F23:
 978             id = WXK_F23; break;
 979         case XK_F24:
 980             id = WXK_F24; break;
 981         default:
 982             id = (keySym <= 255) ? (int)keySym : -1;
 983     }
 984
 985     return id;
 986 }
 987
 988 KeySym wxCharCodeWXToX(int id)
 989 {
 990     KeySym keySym;
 991
 992     switch (id)
 993     {
 994         case WXK_CANCEL:            keySym = XK_Cancel; break;
 995         case WXK_BACK:              keySym = XK_BackSpace; break;
 996         case WXK_TAB:            keySym = XK_Tab; break;
 997         case WXK_CLEAR:        keySym = XK_Clear; break;
 998         case WXK_RETURN:        keySym = XK_Return; break;
 999         case WXK_SHIFT:        keySym = XK_Shift_L; break;
1000         case WXK_CONTROL:        keySym = XK_Control_L; break;
1001         case WXK_MENU :        keySym = XK_Menu; break;
1002         case WXK_PAUSE:        keySym = XK_Pause; break;
1003         case WXK_ESCAPE:        keySym = XK_Escape; break;
1004         case WXK_SPACE:        keySym = ' '; break;
1005         case WXK_PRIOR:        keySym = XK_Prior; break;
1006         case WXK_NEXT :        keySym = XK_Next; break;
1007         case WXK_END:        keySym = XK_End; break;
1008         case WXK_HOME :        keySym = XK_Home; break;
1009         case WXK_LEFT :        keySym = XK_Left; break;
1010         case WXK_UP:        keySym = XK_Up; break;
1011         case WXK_RIGHT:        keySym = XK_Right; break;
1012         case WXK_DOWN :        keySym = XK_Down; break;
1013         case WXK_SELECT:        keySym = XK_Select; break;
1014         case WXK_PRINT:        keySym = XK_Print; break;
1015         case WXK_EXECUTE:        keySym = XK_Execute; break;
1016         case WXK_INSERT:        keySym = XK_Insert; break;
1017         case WXK_DELETE:        keySym = XK_Delete; break;
1018         case WXK_HELP :        keySym = XK_Help; break;
1019         case WXK_NUMPAD0:        keySym = XK_KP_0; break;
1020         case WXK_NUMPAD1:        keySym = XK_KP_1; break;
1021         case WXK_NUMPAD2:        keySym = XK_KP_2; break;
1022         case WXK_NUMPAD3:        keySym = XK_KP_3; break;
1023         case WXK_NUMPAD4:        keySym = XK_KP_4; break;
1024         case WXK_NUMPAD5:        keySym = XK_KP_5; break;
1025         case WXK_NUMPAD6:        keySym = XK_KP_6; break;
1026         case WXK_NUMPAD7:        keySym = XK_KP_7; break;
1027         case WXK_NUMPAD8:        keySym = XK_KP_8; break;
1028         case WXK_NUMPAD9:        keySym = XK_KP_9; break;
1029         case WXK_MULTIPLY:        keySym = XK_KP_Multiply; break;
1030         case WXK_ADD:        keySym = XK_KP_Add; break;
1031         case WXK_SUBTRACT:        keySym = XK_KP_Subtract; break;
1032         case WXK_DECIMAL:        keySym = XK_KP_Decimal; break;
1033         case WXK_DIVIDE:        keySym = XK_KP_Divide; break;
1034         case WXK_F1:        keySym = XK_F1; break;
1035         case WXK_F2:        keySym = XK_F2; break;
1036         case WXK_F3:        keySym = XK_F3; break;
1037         case WXK_F4:        keySym = XK_F4; break;
1038         case WXK_F5:        keySym = XK_F5; break;
1039         case WXK_F6:        keySym = XK_F6; break;
1040         case WXK_F7:        keySym = XK_F7; break;
1041         case WXK_F8:        keySym = XK_F8; break;
1042         case WXK_F9:        keySym = XK_F9; break;
1043         case WXK_F10:        keySym = XK_F10; break;
1044         case WXK_F11:        keySym = XK_F11; break;
1045         case WXK_F12:        keySym = XK_F12; break;
1046         case WXK_F13:        keySym = XK_F13; break;
1047         case WXK_F14:        keySym = XK_F14; break;
1048         case WXK_F15:        keySym = XK_F15; break;
1049         case WXK_F16:        keySym = XK_F16; break;
1050         case WXK_F17:        keySym = XK_F17; break;
1051         case WXK_F18:        keySym = XK_F18; break;
1052         case WXK_F19:        keySym = XK_F19; break;
1053         case WXK_F20:        keySym = XK_F20; break;
1054         case WXK_F21:        keySym = XK_F21; break;
1055         case WXK_F22:        keySym = XK_F22; break;
1056         case WXK_F23:        keySym = XK_F23; break;
1057         case WXK_F24:        keySym = XK_F24; break;
1058         case WXK_NUMLOCK:    keySym = XK_Num_Lock; break;
1059         case WXK_SCROLL:     keySym = XK_Scroll_Lock; break;
1060         default:             keySym = id <= 255 ? (KeySym)id : 0;
1061     }
1062
1063     return keySym;
1064 }
1065
1066 // ----------------------------------------------------------------------------
1067 // Some colour manipulation routines
1068 // ----------------------------------------------------------------------------
1069
1070 void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
1071 {
1072     int h = hsv->h;
1073     int s = hsv->s;
1074     int v = hsv->v;
1075     int r = 0, g = 0, b = 0;
1076     int i, f;
1077     int p, q, t;
1078     s = (s * wxMAX_RGB) / wxMAX_SV;
1079     v = (v * wxMAX_RGB) / wxMAX_SV;
1080     if (h == 360) h = 0;
1081     if (s == 0) { h = 0; r = g = b = v; }
1082     i = h / 60;
1083     f = h % 60;
1084     p = v * (wxMAX_RGB - s) / wxMAX_RGB;
1085     q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
1086     t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
1087     switch (i)
1088     {
1089     case 0: r = v, g = t, b = p; break;
1090     case 1: r = q, g = v, b = p; break;
1091     case 2: r = p, g = v, b = t; break;
1092     case 3: r = p, g = q, b = v; break;
1093     case 4: r = t, g = p, b = v; break;
1094     case 5: r = v, g = p, b = q; break;
1095     }
1096     rgb->red = r << 8;
1097     rgb->green = g << 8;
1098     rgb->blue = b << 8;
1099 }
1100
1101 void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
1102 {
1103     int r = rgb->red >> 8;
1104     int g = rgb->green >> 8;
1105     int b = rgb->blue >> 8;
1106     int maxv = wxMax3(r, g, b);
1107     int minv = wxMin3(r, g, b);
1108     int h = 0, s, v;
1109     v = maxv;
1110     if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
1111     else s = 0;
1112     if (s == 0) h = 0;
1113     else
1114     {
1115         int rc, gc, bc, hex = 0;
1116         rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
1117         gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
1118         bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
1119         if (r == maxv) { h = bc - gc, hex = 0; }
1120         else if (g == maxv) { h = rc - bc, hex = 2; }
1121         else if (b == maxv) { h = gc - rc, hex = 4; }
1122         h = hex * 60 + (h * 60 / wxMAX_RGB);
1123         if (h < 0) h += 360;
1124     }
1125     hsv->h = h;
1126     hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
1127     hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
1128 }
1129
1130 void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
1131 {
1132     int llp;
1133
1134     int screen = DefaultScreen(d);
1135     int num_colors = DisplayCells(d,screen);
1136
1137     XColor *color_defs = new XColor[num_colors];
1138     for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
1139     XQueryColors(d,cmp,color_defs,num_colors);
1140
1141     wxHSV hsv_defs, hsv;
1142     wxXColorToHSV(&hsv,xc);
1143
1144     int diff, min_diff = 0, pixel = 0;
1145
1146     for(llp = 0;llp < num_colors;llp++)
1147     {
1148         wxXColorToHSV(&hsv_defs,&color_defs[llp]);
1149         diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
1150             wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
1151             wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
1152         if (llp == 0) min_diff = diff;
1153         if (min_diff > diff) { min_diff = diff; pixel = llp; }
1154         if (min_diff == 0) break;
1155     }
1156
1157     xc -> red = color_defs[pixel].red;
1158     xc -> green = color_defs[pixel].green;
1159     xc -> blue = color_defs[pixel].blue;
1160     xc -> flags = DoRed | DoGreen | DoBlue;
1161
1162 /*  FIXME, TODO
1163     if (!XAllocColor(d,cmp,xc))
1164         cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
1165 */
1166
1167     delete[] color_defs;
1168 }
1169
1170 void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
1171 {
1172     if (!XAllocColor(d,cmp,xc))
1173     {
1174         //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
1175         wxAllocNearestColor(d,cmp,xc);
1176     }
1177 }
1178