src/common/utilscmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utilscmn.cpp
   3 // Purpose:     Miscellaneous utility functions and classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "utils.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/string.h"
  34     #include "wx/utils.h"
  35     #include "wx/intl.h"
  36     #include "wx/log.h"
  37
  38     #if wxUSE_GUI
  39         #include "wx/window.h"
  40         #include "wx/frame.h"
  41         #include "wx/menu.h"
  42         #include "wx/msgdlg.h"
  43         #include "wx/textdlg.h"
  44         #include "wx/textctrl.h"    // for wxTE_PASSWORD
  45         #if wxUSE_ACCEL
  46             #include "wx/menuitem.h"
  47             #include "wx/accel.h"
  48         #endif // wxUSE_ACCEL
  49     #endif // wxUSE_GUI
  50 #endif // WX_PRECOMP
  51
  52 #include "wx/apptrait.h"
  53
  54 #include "wx/process.h"
  55 #include "wx/txtstrm.h"
  56
  57 #if defined(__WXWINCE__) && wxUSE_DATETIME
  58 #include "wx/datetime.h"
  59 #endif
  60
  61 #include <ctype.h>
  62 #include <stdio.h>
  63 #include <stdlib.h>
  64 #include <string.h>
  65
  66 #if !defined(__WATCOMC__)
  67     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  68         #include <errno.h>
  69     #endif
  70 #endif
  71
  72 #if wxUSE_GUI
  73     #include "wx/colordlg.h"
  74     #include "wx/fontdlg.h"
  75     #include "wx/notebook.h"
  76     #include "wx/frame.h"
  77     #include "wx/statusbr.h"
  78 #endif // wxUSE_GUI
  79
  80 #ifndef __WXWINCE__
  81 #include <time.h>
  82 #else
  83 #include "wx/msw/wince/time.h"
  84 #endif
  85
  86 #if !defined(__MWERKS__) && !defined(__WXWINCE__)
  87     #include <sys/types.h>
  88     #include <sys/stat.h>
  89 #endif
  90
  91 #ifdef __WXMSW__
  92     #include "wx/msw/private.h"
  93 #endif
  94
  95 #if wxUSE_BASE
  96
  97 // ----------------------------------------------------------------------------
  98 // common data
  99 // ----------------------------------------------------------------------------
 100
 101 #if WXWIN_COMPATIBILITY_2_2
 102     const wxChar *wxInternalErrorStr = wxT("wxWindows Internal Error");
 103     const wxChar *wxFatalErrorStr = wxT("wxWindows Fatal Error");
 104 #endif // WXWIN_COMPATIBILITY_2_2
 105
 106 // ============================================================================
 107 // implementation
 108 // ============================================================================
 109
 110 #if WXWIN_COMPATIBILITY_2_4
 111
 112 wxChar *
 113 copystring (const wxChar *s)
 114 {
 115   if (s == NULL) s = wxT("");
 116   size_t len = wxStrlen (s) + 1;
 117
 118   wxChar *news = new wxChar[len];
 119   memcpy (news, s, len * sizeof(wxChar));    // Should be the fastest
 120
 121   return news;
 122 }
 123
 124 #endif // WXWIN_COMPATIBILITY_2_4
 125
 126 // ----------------------------------------------------------------------------
 127 // String <-> Number conversions (deprecated)
 128 // ----------------------------------------------------------------------------
 129
 130 #if WXWIN_COMPATIBILITY_2_4
 131
 132 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxFloatToStringStr = wxT("%.2f");
 133 WXDLLIMPEXP_DATA_BASE(const wxChar *) wxDoubleToStringStr = wxT("%.2f");
 134
 135 void
 136 StringToFloat (const wxChar *s, float *number)
 137 {
 138   if (s && *s && number)
 139     *number = (float) wxStrtod (s, (wxChar **) NULL);
 140 }
 141
 142 void
 143 StringToDouble (const wxChar *s, double *number)
 144 {
 145   if (s && *s && number)
 146     *number = wxStrtod (s, (wxChar **) NULL);
 147 }
 148
 149 wxChar *
 150 FloatToString (float number, const wxChar *fmt)
 151 {
 152   static wxChar buf[256];
 153
 154   wxSprintf (buf, fmt, number);
 155   return buf;
 156 }
 157
 158 wxChar *
 159 DoubleToString (double number, const wxChar *fmt)
 160 {
 161   static wxChar buf[256];
 162
 163   wxSprintf (buf, fmt, number);
 164   return buf;
 165 }
 166
 167 void
 168 StringToInt (const wxChar *s, int *number)
 169 {
 170   if (s && *s && number)
 171     *number = (int) wxStrtol (s, (wxChar **) NULL, 10);
 172 }
 173
 174 void
 175 StringToLong (const wxChar *s, long *number)
 176 {
 177   if (s && *s && number)
 178     *number = wxStrtol (s, (wxChar **) NULL, 10);
 179 }
 180
 181 wxChar *
 182 IntToString (int number)
 183 {
 184   static wxChar buf[20];
 185
 186   wxSprintf (buf, wxT("%d"), number);
 187   return buf;
 188 }
 189
 190 wxChar *
 191 LongToString (long number)
 192 {
 193   static wxChar buf[20];
 194
 195   wxSprintf (buf, wxT("%ld"), number);
 196   return buf;
 197 }
 198
 199 #endif // WXWIN_COMPATIBILITY_2_4
 200
 201 // Array used in DecToHex conversion routine.
 202 static wxChar hexArray[] = wxT("0123456789ABCDEF");
 203
 204 // Convert 2-digit hex number to decimal
 205 int wxHexToDec(const wxString& buf)
 206 {
 207   int firstDigit, secondDigit;
 208
 209   if (buf.GetChar(0) >= wxT('A'))
 210     firstDigit = buf.GetChar(0) - wxT('A') + 10;
 211   else
 212     firstDigit = buf.GetChar(0) - wxT('0');
 213
 214   if (buf.GetChar(1) >= wxT('A'))
 215     secondDigit = buf.GetChar(1) - wxT('A') + 10;
 216   else
 217     secondDigit = buf.GetChar(1) - wxT('0');
 218
 219   return (firstDigit & 0xF) * 16 + (secondDigit & 0xF );
 220 }
 221
 222 // Convert decimal integer to 2-character hex string
 223 void wxDecToHex(int dec, wxChar *buf)
 224 {
 225   int firstDigit = (int)(dec/16.0);
 226   int secondDigit = (int)(dec - (firstDigit*16.0));
 227   buf[0] = hexArray[firstDigit];
 228   buf[1] = hexArray[secondDigit];
 229   buf[2] = 0;
 230 }
 231
 232 // Convert decimal integer to 2-character hex string
 233 wxString wxDecToHex(int dec)
 234 {
 235     wxChar buf[3];
 236     wxDecToHex(dec, buf);
 237     return wxString(buf);
 238 }
 239
 240 // ----------------------------------------------------------------------------
 241 // misc functions
 242 // ----------------------------------------------------------------------------
 243
 244 // Return the current date/time
 245 wxString wxNow()
 246 {
 247 #ifdef __WXWINCE__
 248 #if wxUSE_DATETIME
 249     wxDateTime now = wxDateTime::Now();
 250     return now.Format();
 251 #else
 252     return wxEmptyString;
 253 #endif
 254 #else
 255     time_t now = time((time_t *) NULL);
 256     char *date = ctime(&now);
 257     date[24] = '\0';
 258     return wxString::FromAscii(date);
 259 #endif
 260 }
 261
 262 const wxChar *wxGetInstallPrefix()
 263 {
 264     wxString prefix;
 265
 266     if ( wxGetEnv(wxT("WXPREFIX"), &prefix) )
 267         return prefix.c_str();
 268
 269 #ifdef wxINSTALL_PREFIX
 270     return wxT(wxINSTALL_PREFIX);
 271 #else
 272     return wxT("");
 273 #endif
 274 }
 275
 276 wxString wxGetDataDir()
 277 {
 278     wxString format = wxGetInstallPrefix();
 279     format <<  wxFILE_SEP_PATH
 280            << wxT("share") << wxFILE_SEP_PATH
 281            << wxT("wx") << wxFILE_SEP_PATH
 282            << wxT("%i.%i");
 283     wxString dir;
 284     dir.Printf(format.c_str(), wxMAJOR_VERSION, wxMINOR_VERSION);
 285     return dir;
 286 }
 287
 288 int wxGetOsVersion(int *verMaj, int *verMin)
 289 {
 290     // we want this function to work even if there is no wxApp
 291     wxConsoleAppTraits traitsConsole;
 292     wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 293     if ( ! traits )
 294         traits = &traitsConsole;
 295
 296     return traits->GetOSVersion(verMaj, verMin);
 297 }
 298
 299 // ----------------------------------------------------------------------------
 300 // network and user id functions
 301 // ----------------------------------------------------------------------------
 302
 303 // Get Full RFC822 style email address
 304 bool wxGetEmailAddress(wxChar *address, int maxSize)
 305 {
 306     wxString email = wxGetEmailAddress();
 307     if ( !email )
 308         return FALSE;
 309
 310     wxStrncpy(address, email, maxSize - 1);
 311     address[maxSize - 1] = wxT('\0');
 312
 313     return TRUE;
 314 }
 315
 316 wxString wxGetEmailAddress()
 317 {
 318     wxString email;
 319
 320     wxString host = wxGetFullHostName();
 321     if ( !!host )
 322     {
 323         wxString user = wxGetUserId();
 324         if ( !!user )
 325         {
 326             email << user << wxT('@') << host;
 327         }
 328     }
 329
 330     return email;
 331 }
 332
 333 wxString wxGetUserId()
 334 {
 335     static const int maxLoginLen = 256; // FIXME arbitrary number
 336
 337     wxString buf;
 338     bool ok = wxGetUserId(wxStringBuffer(buf, maxLoginLen), maxLoginLen);
 339
 340     if ( !ok )
 341         buf.Empty();
 342
 343     return buf;
 344 }
 345
 346 wxString wxGetUserName()
 347 {
 348     static const int maxUserNameLen = 1024; // FIXME arbitrary number
 349
 350     wxString buf;
 351     bool ok = wxGetUserName(wxStringBuffer(buf, maxUserNameLen), maxUserNameLen);
 352
 353     if ( !ok )
 354         buf.Empty();
 355
 356     return buf;
 357 }
 358
 359 wxString wxGetHostName()
 360 {
 361     static const size_t hostnameSize = 257;
 362
 363     wxString buf;
 364     bool ok = wxGetHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 365
 366     if ( !ok )
 367         buf.Empty();
 368
 369     return buf;
 370 }
 371
 372 wxString wxGetFullHostName()
 373 {
 374     static const size_t hostnameSize = 257;
 375
 376     wxString buf;
 377     bool ok = wxGetFullHostName(wxStringBuffer(buf, hostnameSize), hostnameSize);
 378
 379     if ( !ok )
 380         buf.Empty();
 381
 382     return buf;
 383 }
 384
 385 wxString wxGetHomeDir()
 386 {
 387     wxString home;
 388     wxGetHomeDir(&home);
 389
 390     return home;
 391 }
 392
 393 #if 0
 394
 395 wxString wxGetCurrentDir()
 396 {
 397     wxString dir;
 398     size_t len = 1024;
 399     bool ok;
 400     do
 401     {
 402         ok = getcwd(dir.GetWriteBuf(len + 1), len) != NULL;
 403         dir.UngetWriteBuf();
 404
 405         if ( !ok )
 406         {
 407             if ( errno != ERANGE )
 408             {
 409                 wxLogSysError(_T("Failed to get current directory"));
 410
 411                 return wxEmptyString;
 412             }
 413             else
 414             {
 415                 // buffer was too small, retry with a larger one
 416                 len *= 2;
 417             }
 418         }
 419         //else: ok
 420     } while ( !ok );
 421
 422     return dir;
 423 }
 424
 425 #endif // 0
 426
 427 // ----------------------------------------------------------------------------
 428 // wxExecute
 429 // ----------------------------------------------------------------------------
 430
 431 // wxDoExecuteWithCapture() helper: reads an entire stream into one array
 432 //
 433 // returns TRUE if ok, FALSE if error
 434 #if wxUSE_STREAMS
 435 static bool ReadAll(wxInputStream *is, wxArrayString& output)
 436 {
 437     wxCHECK_MSG( is, FALSE, _T("NULL stream in wxExecute()?") );
 438
 439     // the stream could be already at EOF or in wxSTREAM_BROKEN_PIPE state
 440     is->Reset();
 441
 442     wxTextInputStream tis(*is);
 443
 444     bool cont = TRUE;
 445     while ( cont )
 446     {
 447         wxString line = tis.ReadLine();
 448         if ( is->Eof() )
 449             break;
 450
 451         if ( !*is )
 452         {
 453             cont = FALSE;
 454         }
 455         else
 456         {
 457             output.Add(line);
 458         }
 459     }
 460
 461     return cont;
 462 }
 463 #endif // wxUSE_STREAMS
 464
 465 // this is a private function because it hasn't a clean interface: the first
 466 // array is passed by reference, the second by pointer - instead we have 2
 467 // public versions of wxExecute() below
 468 static long wxDoExecuteWithCapture(const wxString& command,
 469                                    wxArrayString& output,
 470                                    wxArrayString* error)
 471 {
 472     // create a wxProcess which will capture the output
 473     wxProcess *process = new wxProcess;
 474     process->Redirect();
 475
 476     long rc = wxExecute(command, wxEXEC_SYNC, process);
 477
 478 #if wxUSE_STREAMS
 479     if ( rc != -1 )
 480     {
 481         if ( !ReadAll(process->GetInputStream(), output) )
 482             rc = -1;
 483
 484         if ( error )
 485         {
 486             if ( !ReadAll(process->GetErrorStream(), *error) )
 487                 rc = -1;
 488         }
 489
 490     }
 491 #endif // wxUSE_STREAMS
 492
 493     delete process;
 494
 495     return rc;
 496 }
 497
 498 long wxExecute(const wxString& command, wxArrayString& output)
 499 {
 500     return wxDoExecuteWithCapture(command, output, NULL);
 501 }
 502
 503 long wxExecute(const wxString& command,
 504                wxArrayString& output,
 505                wxArrayString& error)
 506 {
 507     return wxDoExecuteWithCapture(command, output, &error);
 508 }
 509
 510 // ----------------------------------------------------------------------------
 511 // wxApp::Yield() wrappers for backwards compatibility
 512 // ----------------------------------------------------------------------------
 513
 514 bool wxYield()
 515 {
 516     return wxTheApp && wxTheApp->Yield();
 517 }
 518
 519 bool wxYieldIfNeeded()
 520 {
 521     return wxTheApp && wxTheApp->Yield(TRUE);
 522 }
 523
 524 #endif // wxUSE_BASE
 525
 526 // ============================================================================
 527 // GUI-only functions from now on
 528 // ============================================================================
 529
 530 #if wxUSE_GUI
 531
 532 // Id generation
 533 static long wxCurrentId = 100;
 534
 535 long
 536 wxNewId (void)
 537 {
 538   return wxCurrentId++;
 539 }
 540
 541 long
 542 wxGetCurrentId(void) { return wxCurrentId; }
 543
 544 void
 545 wxRegisterId (long id)
 546 {
 547   if (id >= wxCurrentId)
 548     wxCurrentId = id + 1;
 549 }
 550
 551 #if wxUSE_MENUS
 552
 553 // ----------------------------------------------------------------------------
 554 // Menu accelerators related functions
 555 // ----------------------------------------------------------------------------
 556
 557 wxChar *wxStripMenuCodes(const wxChar *in, wxChar *out)
 558 {
 559     wxString s = wxMenuItem::GetLabelFromText(in);
 560     if ( out )
 561     {
 562         // go smash their buffer if it's not big enough - I love char * params
 563         memcpy(out, s.c_str(), s.length() * sizeof(wxChar));
 564     }
 565     else
 566     {
 567         // MYcopystring - for easier search...
 568         out = new wxChar[s.length() + 1];
 569         wxStrcpy(out, s.c_str());
 570     }
 571
 572     return out;
 573 }
 574
 575 wxString wxStripMenuCodes(const wxString& in)
 576 {
 577     wxString out;
 578
 579     size_t len = in.length();
 580     out.reserve(len);
 581
 582     for ( size_t n = 0; n < len; n++ )
 583     {
 584         wxChar ch = in[n];
 585         if ( ch == _T('&') )
 586         {
 587             // skip it, it is used to introduce the accel char (or to quote
 588             // itself in which case it should still be skipped): note that it
 589             // can't be the last character of the string
 590             if ( ++n == len )
 591             {
 592                 wxLogDebug(_T("Invalid menu string '%s'"), in.c_str());
 593             }
 594             else
 595             {
 596                 // use the next char instead
 597                 ch = in[n];
 598             }
 599         }
 600         else if ( ch == _T('\t') )
 601         {
 602             // everything after TAB is accel string, exit the loop
 603             break;
 604         }
 605
 606         out += ch;
 607     }
 608
 609     return out;
 610 }
 611
 612 #endif // wxUSE_MENUS
 613
 614 // ----------------------------------------------------------------------------
 615 // Window search functions
 616 // ----------------------------------------------------------------------------
 617
 618 /*
 619  * If parent is non-NULL, look through children for a label or title
 620  * matching the specified string. If NULL, look through all top-level windows.
 621  *
 622  */
 623
 624 wxWindow *
 625 wxFindWindowByLabel (const wxString& title, wxWindow * parent)
 626 {
 627     return wxWindow::FindWindowByLabel( title, parent );
 628 }
 629
 630
 631 /*
 632  * If parent is non-NULL, look through children for a name
 633  * matching the specified string. If NULL, look through all top-level windows.
 634  *
 635  */
 636
 637 wxWindow *
 638 wxFindWindowByName (const wxString& name, wxWindow * parent)
 639 {
 640     return wxWindow::FindWindowByName( name, parent );
 641 }
 642
 643 // Returns menu item id or -1 if none.
 644 int
 645 wxFindMenuItemId (wxFrame * frame, const wxString& menuString, const wxString& itemString)
 646 {
 647 #if wxUSE_MENUS
 648   wxMenuBar *menuBar = frame->GetMenuBar ();
 649   if ( menuBar )
 650       return menuBar->FindMenuItem (menuString, itemString);
 651 #endif // wxUSE_MENUS
 652
 653   return -1;
 654 }
 655
 656 // Try to find the deepest child that contains 'pt'.
 657 // We go backwards, to try to allow for controls that are spacially
 658 // within other controls, but are still siblings (e.g. buttons within
 659 // static boxes). Static boxes are likely to be created _before_ controls
 660 // that sit inside them.
 661 wxWindow* wxFindWindowAtPoint(wxWindow* win, const wxPoint& pt)
 662 {
 663     if (!win->IsShown())
 664         return NULL;
 665
 666     // Hack for wxNotebook case: at least in wxGTK, all pages
 667     // claim to be shown, so we must only deal with the selected one.
 668 #if wxUSE_NOTEBOOK
 669     if (win->IsKindOf(CLASSINFO(wxNotebook)))
 670     {
 671       wxNotebook* nb = (wxNotebook*) win;
 672       int sel = nb->GetSelection();
 673       if (sel >= 0)
 674       {
 675         wxWindow* child = nb->GetPage(sel);
 676         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 677         if (foundWin)
 678            return foundWin;
 679       }
 680     }
 681 #endif
 682
 683     wxWindowList::compatibility_iterator node = win->GetChildren().GetLast();
 684     while (node)
 685     {
 686         wxWindow* child = node->GetData();
 687         wxWindow* foundWin = wxFindWindowAtPoint(child, pt);
 688         if (foundWin)
 689           return foundWin;
 690         node = node->GetPrevious();
 691     }
 692
 693     wxPoint pos = win->GetPosition();
 694     wxSize sz = win->GetSize();
 695     if (win->GetParent())
 696     {
 697         pos = win->GetParent()->ClientToScreen(pos);
 698     }
 699
 700     wxRect rect(pos, sz);
 701     if (rect.Inside(pt))
 702         return win;
 703     else
 704         return NULL;
 705 }
 706
 707 wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt)
 708 {
 709     // Go backwards through the list since windows
 710     // on top are likely to have been appended most
 711     // recently.
 712     wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetLast();
 713     while (node)
 714     {
 715         wxWindow* win = node->GetData();
 716         wxWindow* found = wxFindWindowAtPoint(win, pt);
 717         if (found)
 718             return found;
 719         node = node->GetPrevious();
 720     }
 721     return NULL;
 722 }
 723
 724 // ----------------------------------------------------------------------------
 725 // GUI helpers
 726 // ----------------------------------------------------------------------------
 727
 728 /*
 729  * N.B. these convenience functions must be separate from msgdlgg.cpp, textdlgg.cpp
 730  * since otherwise the generic code may be pulled in unnecessarily.
 731  */
 732
 733 #if wxUSE_MSGDLG
 734
 735 int wxMessageBox(const wxString& message, const wxString& caption, long style,
 736                  wxWindow *parent, int WXUNUSED(x), int WXUNUSED(y) )
 737 {
 738     wxMessageDialog dialog(parent, message, caption, style);
 739
 740     int ans = dialog.ShowModal();
 741     switch ( ans )
 742     {
 743         case wxID_OK:
 744             return wxOK;
 745         case wxID_YES:
 746             return wxYES;
 747         case wxID_NO:
 748             return wxNO;
 749         case wxID_CANCEL:
 750             return wxCANCEL;
 751     }
 752
 753     wxFAIL_MSG( _T("unexpected return code from wxMessageDialog") );
 754
 755     return wxCANCEL;
 756 }
 757
 758 #endif // wxUSE_MSGDLG
 759
 760 #if wxUSE_TEXTDLG
 761
 762 wxString wxGetTextFromUser(const wxString& message, const wxString& caption,
 763                         const wxString& defaultValue, wxWindow *parent,
 764                         int x, int y, bool WXUNUSED(centre) )
 765 {
 766     wxString str;
 767     wxTextEntryDialog dialog(parent, message, caption, defaultValue, wxOK|wxCANCEL, wxPoint(x, y));
 768     if (dialog.ShowModal() == wxID_OK)
 769     {
 770         str = dialog.GetValue();
 771     }
 772
 773     return str;
 774 }
 775
 776 wxString wxGetPasswordFromUser(const wxString& message,
 777                                const wxString& caption,
 778                                const wxString& defaultValue,
 779                                wxWindow *parent)
 780 {
 781     wxString str;
 782     wxTextEntryDialog dialog(parent, message, caption, defaultValue,
 783                              wxOK | wxCANCEL | wxTE_PASSWORD);
 784     if ( dialog.ShowModal() == wxID_OK )
 785     {
 786         str = dialog.GetValue();
 787     }
 788
 789     return str;
 790 }
 791
 792 #endif // wxUSE_TEXTDLG
 793
 794 #if wxUSE_COLOURDLG
 795
 796 wxColour wxGetColourFromUser(wxWindow *parent, const wxColour& colInit)
 797 {
 798     wxColourData data;
 799     data.SetChooseFull(TRUE);
 800     if ( colInit.Ok() )
 801     {
 802         data.SetColour((wxColour &)colInit); // const_cast
 803     }
 804
 805     wxColour colRet;
 806     wxColourDialog dialog(parent, &data);
 807     if ( dialog.ShowModal() == wxID_OK )
 808     {
 809         colRet = dialog.GetColourData().GetColour();
 810     }
 811     //else: leave it invalid
 812
 813     return colRet;
 814 }
 815
 816 #endif // wxUSE_COLOURDLG
 817
 818 #if wxUSE_FONTDLG
 819
 820 wxFont wxGetFontFromUser(wxWindow *parent, const wxFont& fontInit)
 821 {
 822     wxFontData data;
 823     if ( fontInit.Ok() )
 824     {
 825         data.SetInitialFont(fontInit);
 826     }
 827
 828     wxFont fontRet;
 829     wxFontDialog dialog(parent, data);
 830     if ( dialog.ShowModal() == wxID_OK )
 831     {
 832         fontRet = dialog.GetFontData().GetChosenFont();
 833     }
 834     //else: leave it invalid
 835
 836     return fontRet;
 837 }
 838
 839 #endif // wxUSE_FONTDLG
 840
 841 // ----------------------------------------------------------------------------
 842 // wxSafeYield and supporting functions
 843 // ----------------------------------------------------------------------------
 844
 845 void wxEnableTopLevelWindows(bool enable)
 846 {
 847     wxWindowList::compatibility_iterator node;
 848     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 849         node->GetData()->Enable(enable);
 850 }
 851
 852 wxWindowDisabler::wxWindowDisabler(wxWindow *winToSkip)
 853 {
 854     // remember the top level windows which were already disabled, so that we
 855     // don't reenable them later
 856     m_winDisabled = NULL;
 857
 858     wxWindowList::compatibility_iterator node;
 859     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 860     {
 861         wxWindow *winTop = node->GetData();
 862         if ( winTop == winToSkip )
 863             continue;
 864
 865         // we don't need to disable the hidden or already disabled windows
 866         if ( winTop->IsEnabled() && winTop->IsShown() )
 867         {
 868             winTop->Disable();
 869         }
 870         else
 871         {
 872             if ( !m_winDisabled )
 873             {
 874                 m_winDisabled = new wxWindowList;
 875             }
 876
 877             m_winDisabled->Append(winTop);
 878         }
 879     }
 880 }
 881
 882 wxWindowDisabler::~wxWindowDisabler()
 883 {
 884     wxWindowList::compatibility_iterator node;
 885     for ( node = wxTopLevelWindows.GetFirst(); node; node = node->GetNext() )
 886     {
 887         wxWindow *winTop = node->GetData();
 888         if ( !m_winDisabled || !m_winDisabled->Find(winTop) )
 889         {
 890             winTop->Enable();
 891         }
 892         //else: had been already disabled, don't reenable
 893     }
 894
 895     delete m_winDisabled;
 896 }
 897
 898 // Yield to other apps/messages and disable user input to all windows except
 899 // the given one
 900 bool wxSafeYield(wxWindow *win, bool onlyIfNeeded)
 901 {
 902     wxWindowDisabler wd(win);
 903
 904     bool rc;
 905     if (onlyIfNeeded)
 906         rc = wxYieldIfNeeded();
 907     else
 908         rc = wxYield();
 909
 910     return rc;
 911 }
 912
 913 // Don't synthesize KeyUp events holding down a key and producing KeyDown
 914 // events with autorepeat. On by default and always on in wxMSW. wxGTK version
 915 // in utilsgtk.cpp.
 916 #ifndef __WXGTK__
 917 bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
 918 {
 919     return TRUE;    // detectable auto-repeat is the only mode MSW supports
 920 }
 921 #endif // !wxGTK
 922
 923 #endif // wxUSE_GUI
 924