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