src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76
  77 // Windows List
  78 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  79
  80 // globals
  81 #if wxUSE_MENUS
  82 wxMenu *wxCurrentPopupMenu = NULL;
  83 #endif // wxUSE_MENUS
  84
  85 // ----------------------------------------------------------------------------
  86 // static data
  87 // ----------------------------------------------------------------------------
  88
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105 END_EVENT_TABLE()
 106
 107 // ============================================================================
 108 // implementation of the common functionality of the wxWindow class
 109 // ============================================================================
 110
 111 // ----------------------------------------------------------------------------
 112 // initialization
 113 // ----------------------------------------------------------------------------
 114
 115 // the default initialization
 116 wxWindowBase::wxWindowBase()
 117 {
 118     // no window yet, no parent nor children
 119     m_parent = NULL;
 120     m_windowId = wxID_ANY;
 121
 122     // no constraints on the minimal window size
 123     m_minWidth =
 124     m_maxWidth = wxDefaultCoord;
 125     m_minHeight =
 126     m_maxHeight = wxDefaultCoord;
 127
 128     // invalidiated cache value
 129     m_bestSizeCache = wxDefaultSize;
 130
 131     // window are created enabled and visible by default
 132     m_isShown =
 133     m_isEnabled = true;
 134
 135     // the default event handler is just this window
 136     m_eventHandler = this;
 137
 138 #if wxUSE_VALIDATORS
 139     // no validator
 140     m_windowValidator = NULL;
 141 #endif // wxUSE_VALIDATORS
 142
 143     // the colours/fonts are default for now, so leave m_font,
 144     // m_backgroundColour and m_foregroundColour uninitialized and set those
 145     m_hasBgCol =
 146     m_hasFgCol =
 147     m_hasFont = false;
 148     m_inheritBgCol =
 149     m_inheritFgCol =
 150     m_inheritFont = false;
 151
 152     // no style bits
 153     m_exStyle =
 154     m_windowStyle = 0;
 155
 156     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 157
 158 #if wxUSE_CONSTRAINTS
 159     // no constraints whatsoever
 160     m_constraints = NULL;
 161     m_constraintsInvolvedIn = NULL;
 162 #endif // wxUSE_CONSTRAINTS
 163
 164     m_windowSizer = NULL;
 165     m_containingSizer = NULL;
 166     m_autoLayout = false;
 167
 168 #if wxUSE_DRAG_AND_DROP
 169     m_dropTarget = NULL;
 170 #endif // wxUSE_DRAG_AND_DROP
 171
 172 #if wxUSE_TOOLTIPS
 173     m_tooltip = NULL;
 174 #endif // wxUSE_TOOLTIPS
 175
 176 #if wxUSE_CARET
 177     m_caret = NULL;
 178 #endif // wxUSE_CARET
 179
 180 #if wxUSE_PALETTE
 181     m_hasCustomPalette = false;
 182 #endif // wxUSE_PALETTE
 183
 184 #if wxUSE_ACCESSIBILITY
 185     m_accessible = NULL;
 186 #endif
 187
 188     m_virtualSize = wxDefaultSize;
 189
 190     m_scrollHelper = NULL;
 191
 192     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 193 #if wxUSE_SYSTEM_OPTIONS
 194     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 195     {
 196        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 197     }
 198 #endif
 199
 200     // Whether we're using the current theme for this window (wxGTK only for now)
 201     m_themeEnabled = false;
 202
 203     // This is set to true by SendDestroyEvent() which should be called by the
 204     // most derived class to ensure that the destruction event is sent as soon
 205     // as possible to allow its handlers to still see the undestroyed window
 206     m_isBeingDeleted = false;
 207
 208     m_freezeCount = 0;
 209 }
 210
 211 // common part of window creation process
 212 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 213                               wxWindowID id,
 214                               const wxPoint& WXUNUSED(pos),
 215                               const wxSize& WXUNUSED(size),
 216                               long style,
 217                               const wxValidator& wxVALIDATOR_PARAM(validator),
 218                               const wxString& name)
 219 {
 220 #if wxUSE_STATBOX
 221     // wxGTK doesn't allow to create controls with static box as the parent so
 222     // this will result in a crash when the program is ported to wxGTK so warn
 223     // the user about it
 224
 225     // if you get this assert, the correct solution is to create the controls
 226     // as siblings of the static box
 227     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 228                   _T("wxStaticBox can't be used as a window parent!") );
 229 #endif // wxUSE_STATBOX
 230
 231     // ids are limited to 16 bits under MSW so if you care about portability,
 232     // it's not a good idea to use ids out of this range (and negative ids are
 233     // reserved for wxWidgets own usage)
 234     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 235                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 236                   _T("invalid id value") );
 237
 238     // generate a new id if the user doesn't care about it
 239     if ( id == wxID_ANY )
 240     {
 241         m_windowId = NewControlId();
 242     }
 243     else // valid id specified
 244     {
 245         m_windowId = id;
 246     }
 247
 248     // don't use SetWindowStyleFlag() here, this function should only be called
 249     // to change the flag after creation as it tries to reflect the changes in
 250     // flags by updating the window dynamically and we don't need this here
 251     m_windowStyle = style;
 252
 253     SetName(name);
 254     SetParent(parent);
 255
 256 #if wxUSE_VALIDATORS
 257     SetValidator(validator);
 258 #endif // wxUSE_VALIDATORS
 259
 260     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 261     // have it too - like this it's possible to set it only in the top level
 262     // dialog/frame and all children will inherit it by defult
 263     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 264     {
 265         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 266     }
 267
 268     return true;
 269 }
 270
 271 bool wxWindowBase::ToggleWindowStyle(int flag)
 272 {
 273     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 274
 275     bool rc;
 276     long style = GetWindowStyleFlag();
 277     if ( style & flag )
 278     {
 279         style &= ~flag;
 280         rc = false;
 281     }
 282     else // currently off
 283     {
 284         style |= flag;
 285         rc = true;
 286     }
 287
 288     SetWindowStyleFlag(style);
 289
 290     return rc;
 291 }
 292
 293 // ----------------------------------------------------------------------------
 294 // destruction
 295 // ----------------------------------------------------------------------------
 296
 297 // common clean up
 298 wxWindowBase::~wxWindowBase()
 299 {
 300     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 301
 302     // FIXME if these 2 cases result from programming errors in the user code
 303     //       we should probably assert here instead of silently fixing them
 304
 305     // Just in case the window has been Closed, but we're then deleting
 306     // immediately: don't leave dangling pointers.
 307     wxPendingDelete.DeleteObject(this);
 308
 309     // Just in case we've loaded a top-level window via LoadNativeDialog but
 310     // we weren't a dialog class
 311     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 312
 313 #if wxUSE_MENUS
 314     // The associated popup menu can still be alive, disassociate from it in
 315     // this case
 316     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 317         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 318 #endif // wxUSE_MENUS
 319
 320     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 321
 322     // notify the parent about this window destruction
 323     if ( m_parent )
 324         m_parent->RemoveChild(this);
 325
 326 #if wxUSE_CARET
 327     delete m_caret;
 328 #endif // wxUSE_CARET
 329
 330 #if wxUSE_VALIDATORS
 331     delete m_windowValidator;
 332 #endif // wxUSE_VALIDATORS
 333
 334 #if wxUSE_CONSTRAINTS
 335     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 336     // at deleted windows as they delete themselves.
 337     DeleteRelatedConstraints();
 338
 339     if ( m_constraints )
 340     {
 341         // This removes any dangling pointers to this window in other windows'
 342         // constraintsInvolvedIn lists.
 343         UnsetConstraints(m_constraints);
 344         delete m_constraints;
 345         m_constraints = NULL;
 346     }
 347 #endif // wxUSE_CONSTRAINTS
 348
 349     if ( m_containingSizer )
 350         m_containingSizer->Detach( (wxWindow*)this );
 351
 352     delete m_windowSizer;
 353
 354 #if wxUSE_DRAG_AND_DROP
 355     delete m_dropTarget;
 356 #endif // wxUSE_DRAG_AND_DROP
 357
 358 #if wxUSE_TOOLTIPS
 359     delete m_tooltip;
 360 #endif // wxUSE_TOOLTIPS
 361
 362 #if wxUSE_ACCESSIBILITY
 363     delete m_accessible;
 364 #endif
 365
 366 #if wxUSE_HELP
 367     // NB: this has to be called unconditionally, because we don't know
 368     //     whether this window has associated help text or not
 369     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 370     if ( helpProvider )
 371         helpProvider->RemoveHelp(this);
 372 #endif
 373 }
 374
 375 bool wxWindowBase::IsBeingDeleted() const
 376 {
 377     return m_isBeingDeleted ||
 378             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 379 }
 380
 381 void wxWindowBase::SendDestroyEvent()
 382 {
 383     if ( m_isBeingDeleted )
 384     {
 385         // we could have been already called from a more derived class dtor,
 386         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 387         // should be simply ignored
 388         return;
 389     }
 390
 391     m_isBeingDeleted = true;
 392
 393     wxWindowDestroyEvent event;
 394     event.SetEventObject(this);
 395     event.SetId(GetId());
 396     GetEventHandler()->ProcessEvent(event);
 397 }
 398
 399 bool wxWindowBase::Destroy()
 400 {
 401     SendDestroyEvent();
 402
 403     delete this;
 404
 405     return true;
 406 }
 407
 408 bool wxWindowBase::Close(bool force)
 409 {
 410     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 411     event.SetEventObject(this);
 412     event.SetCanVeto(!force);
 413
 414     // return false if window wasn't closed because the application vetoed the
 415     // close event
 416     return HandleWindowEvent(event) && !event.GetVeto();
 417 }
 418
 419 bool wxWindowBase::DestroyChildren()
 420 {
 421     wxWindowList::compatibility_iterator node;
 422     for ( ;; )
 423     {
 424         // we iterate until the list becomes empty
 425         node = GetChildren().GetFirst();
 426         if ( !node )
 427             break;
 428
 429         wxWindow *child = node->GetData();
 430
 431         // note that we really want to delete it immediately so don't call the
 432         // possible overridden Destroy() version which might not delete the
 433         // child immediately resulting in problems with our (top level) child
 434         // outliving its parent
 435         child->wxWindowBase::Destroy();
 436
 437         wxASSERT_MSG( !GetChildren().Find(child),
 438                       wxT("child didn't remove itself using RemoveChild()") );
 439     }
 440
 441     return true;
 442 }
 443
 444 // ----------------------------------------------------------------------------
 445 // size/position related methods
 446 // ----------------------------------------------------------------------------
 447
 448 // centre the window with respect to its parent in either (or both) directions
 449 void wxWindowBase::DoCentre(int dir)
 450 {
 451     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 452                  _T("this method only implements centering child windows") );
 453
 454     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 455 }
 456
 457 // fits the window around the children
 458 void wxWindowBase::Fit()
 459 {
 460     if ( !GetChildren().empty() )
 461     {
 462         SetSize(GetBestSize());
 463     }
 464     //else: do nothing if we have no children
 465 }
 466
 467 // fits virtual size (ie. scrolled area etc.) around children
 468 void wxWindowBase::FitInside()
 469 {
 470     if ( GetChildren().GetCount() > 0 )
 471     {
 472         SetVirtualSize( GetBestVirtualSize() );
 473     }
 474 }
 475
 476 // On Mac, scrollbars are explicitly children.
 477 #ifdef __WXMAC__
 478 static bool wxHasRealChildren(const wxWindowBase* win)
 479 {
 480     int realChildCount = 0;
 481
 482     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 483           node;
 484           node = node->GetNext() )
 485     {
 486         wxWindow *win = node->GetData();
 487         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 488             realChildCount ++;
 489     }
 490     return (realChildCount > 0);
 491 }
 492 #endif
 493
 494 void wxWindowBase::InvalidateBestSize()
 495 {
 496     m_bestSizeCache = wxDefaultSize;
 497
 498     // parent's best size calculation may depend on its children's
 499     // as long as child window we are in is not top level window itself
 500     // (because the TLW size is never resized automatically)
 501     // so let's invalidate it as well to be safe:
 502     if (m_parent && !IsTopLevel())
 503         m_parent->InvalidateBestSize();
 504 }
 505
 506 // return the size best suited for the current window
 507 wxSize wxWindowBase::DoGetBestSize() const
 508 {
 509     wxSize best;
 510
 511     if ( m_windowSizer )
 512     {
 513         best = m_windowSizer->GetMinSize();
 514     }
 515 #if wxUSE_CONSTRAINTS
 516     else if ( m_constraints )
 517     {
 518         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 519
 520         // our minimal acceptable size is such that all our windows fit inside
 521         int maxX = 0,
 522             maxY = 0;
 523
 524         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 525               node;
 526               node = node->GetNext() )
 527         {
 528             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 529             if ( !c )
 530             {
 531                 // it's not normal that we have an unconstrained child, but
 532                 // what can we do about it?
 533                 continue;
 534             }
 535
 536             int x = c->right.GetValue(),
 537                 y = c->bottom.GetValue();
 538
 539             if ( x > maxX )
 540                 maxX = x;
 541
 542             if ( y > maxY )
 543                 maxY = y;
 544
 545             // TODO: we must calculate the overlaps somehow, otherwise we
 546             //       will never return a size bigger than the current one :-(
 547         }
 548
 549         best = wxSize(maxX, maxY);
 550     }
 551 #endif // wxUSE_CONSTRAINTS
 552     else if ( !GetChildren().empty()
 553 #ifdef __WXMAC__
 554               && wxHasRealChildren(this)
 555 #endif
 556               )
 557     {
 558         // our minimal acceptable size is such that all our visible child
 559         // windows fit inside
 560         int maxX = 0,
 561             maxY = 0;
 562
 563         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 564               node;
 565               node = node->GetNext() )
 566         {
 567             wxWindow *win = node->GetData();
 568             if ( win->IsTopLevel()
 569                     || !win->IsShown()
 570 #if wxUSE_STATUSBAR
 571                         || wxDynamicCast(win, wxStatusBar)
 572 #endif // wxUSE_STATUSBAR
 573                )
 574             {
 575                 // dialogs and frames lie in different top level windows -
 576                 // don't deal with them here; as for the status bars, they
 577                 // don't lie in the client area at all
 578                 continue;
 579             }
 580
 581             int wx, wy, ww, wh;
 582             win->GetPosition(&wx, &wy);
 583
 584             // if the window hadn't been positioned yet, assume that it is in
 585             // the origin
 586             if ( wx == wxDefaultCoord )
 587                 wx = 0;
 588             if ( wy == wxDefaultCoord )
 589                 wy = 0;
 590
 591             win->GetSize(&ww, &wh);
 592             if ( wx + ww > maxX )
 593                 maxX = wx + ww;
 594             if ( wy + wh > maxY )
 595                 maxY = wy + wh;
 596         }
 597
 598         best = wxSize(maxX, maxY);
 599     }
 600     else // ! has children
 601     {
 602         // for a generic window there is no natural best size so, if the
 603         // minimal size is not set, use the current size but take care to
 604         // remember it as minimal size for the next time because our best size
 605         // should be constant: otherwise we could get into a situation when the
 606         // window is initially at some size, then expanded to a larger size and
 607         // then, when the containing window is shrunk back (because our initial
 608         // best size had been used for computing the parent min size), we can't
 609         // be shrunk back any more because our best size is now bigger
 610         wxSize size = GetMinSize();
 611         if ( !size.IsFullySpecified() )
 612         {
 613             size.SetDefaults(GetSize());
 614             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 615         }
 616
 617         // return as-is, unadjusted by the client size difference.
 618         return size;
 619     }
 620
 621     // Add any difference between size and client size
 622     wxSize diff = GetSize() - GetClientSize();
 623     best.x += wxMax(0, diff.x);
 624     best.y += wxMax(0, diff.y);
 625
 626     return best;
 627 }
 628
 629 // helper of GetWindowBorderSize(): as many ports don't implement support for
 630 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 631 // fallbacks in this case
 632 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 633 {
 634     int rc = wxSystemSettings::GetMetric(
 635         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 636     if ( rc == -1 )
 637     {
 638         switch ( what )
 639         {
 640             case wxSYS_BORDER_X:
 641             case wxSYS_BORDER_Y:
 642                 // 2D border is by default 1 pixel wide
 643                 rc = 1;
 644                 break;
 645
 646             case wxSYS_EDGE_X:
 647             case wxSYS_EDGE_Y:
 648                 // 3D borders are by default 2 pixels
 649                 rc = 2;
 650                 break;
 651
 652             default:
 653                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 654                 rc = 0;
 655         }
 656     }
 657
 658     return rc;
 659 }
 660
 661 wxSize wxWindowBase::GetWindowBorderSize() const
 662 {
 663     wxSize size;
 664
 665     switch ( GetBorder() )
 666     {
 667         case wxBORDER_NONE:
 668             // nothing to do, size is already (0, 0)
 669             break;
 670
 671         case wxBORDER_SIMPLE:
 672         case wxBORDER_STATIC:
 673             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 674             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 675             break;
 676
 677         case wxBORDER_SUNKEN:
 678         case wxBORDER_RAISED:
 679             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 680                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 681             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 682                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 683             break;
 684
 685         case wxBORDER_DOUBLE:
 686             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 687                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 688             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 689                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 690             break;
 691
 692         default:
 693             wxFAIL_MSG(_T("Unknown border style."));
 694             break;
 695     }
 696
 697     // we have borders on both sides
 698     return size*2;
 699 }
 700
 701 wxSize wxWindowBase::GetEffectiveMinSize() const
 702 {
 703     // merge the best size with the min size, giving priority to the min size
 704     wxSize min = GetMinSize();
 705
 706     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 707     {
 708         wxSize best = GetBestSize();
 709         if (min.x == wxDefaultCoord) min.x =  best.x;
 710         if (min.y == wxDefaultCoord) min.y =  best.y;
 711     }
 712
 713     return min;
 714 }
 715
 716 wxSize wxWindowBase::GetBestSize() const
 717 {
 718     if ((!m_windowSizer) && (m_bestSizeCache.IsFullySpecified()))
 719         return m_bestSizeCache;
 720
 721     return DoGetBestSize();
 722 }
 723
 724 void wxWindowBase::SetMinSize(const wxSize& minSize)
 725 {
 726     m_minWidth = minSize.x;
 727     m_minHeight = minSize.y;
 728 }
 729
 730 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 731 {
 732     m_maxWidth = maxSize.x;
 733     m_maxHeight = maxSize.y;
 734 }
 735
 736 void wxWindowBase::SetInitialSize(const wxSize& size)
 737 {
 738     // Set the min size to the size passed in.  This will usually either be
 739     // wxDefaultSize or the size passed to this window's ctor/Create function.
 740     SetMinSize(size);
 741
 742     // Merge the size with the best size if needed
 743     wxSize best = GetEffectiveMinSize();
 744
 745     // If the current size doesn't match then change it
 746     if (GetSize() != best)
 747         SetSize(best);
 748 }
 749
 750
 751 // by default the origin is not shifted
 752 wxPoint wxWindowBase::GetClientAreaOrigin() const
 753 {
 754     return wxPoint(0,0);
 755 }
 756
 757 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 758 {
 759     const wxSize diff(GetSize() - GetClientSize());
 760
 761     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 762                   size.y == -1 ? -1 : size.y + diff.y);
 763 }
 764
 765 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 766 {
 767     const wxSize diff(GetSize() - GetClientSize());
 768
 769     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 770                   size.y == -1 ? -1 : size.y - diff.y);
 771 }
 772
 773 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 774 {
 775     if ( m_windowVariant != variant )
 776     {
 777         m_windowVariant = variant;
 778
 779         DoSetWindowVariant(variant);
 780     }
 781 }
 782
 783 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 784 {
 785     // adjust the font height to correspond to our new variant (notice that
 786     // we're only called if something really changed)
 787     wxFont font = GetFont();
 788     int size = font.GetPointSize();
 789     switch ( variant )
 790     {
 791         case wxWINDOW_VARIANT_NORMAL:
 792             break;
 793
 794         case wxWINDOW_VARIANT_SMALL:
 795             size *= 3;
 796             size /= 4;
 797             break;
 798
 799         case wxWINDOW_VARIANT_MINI:
 800             size *= 2;
 801             size /= 3;
 802             break;
 803
 804         case wxWINDOW_VARIANT_LARGE:
 805             size *= 5;
 806             size /= 4;
 807             break;
 808
 809         default:
 810             wxFAIL_MSG(_T("unexpected window variant"));
 811             break;
 812     }
 813
 814     font.SetPointSize(size);
 815     SetFont(font);
 816 }
 817
 818 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 819                                    int maxW, int maxH,
 820                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 821 {
 822     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 823                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 824                  _T("min width/height must be less than max width/height!") );
 825
 826     m_minWidth = minW;
 827     m_maxWidth = maxW;
 828     m_minHeight = minH;
 829     m_maxHeight = maxH;
 830 }
 831
 832
 833 #if WXWIN_COMPATIBILITY_2_8
 834 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 835                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 836 {
 837 }
 838
 839 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 840                                        const wxSize& WXUNUSED(maxsize))
 841 {
 842 }
 843 #endif // WXWIN_COMPATIBILITY_2_8
 844
 845 void wxWindowBase::DoSetVirtualSize( int x, int y )
 846 {
 847     m_virtualSize = wxSize(x, y);
 848 }
 849
 850 wxSize wxWindowBase::DoGetVirtualSize() const
 851 {
 852     // we should use the entire client area so if it is greater than our
 853     // virtual size, expand it to fit (otherwise if the window is big enough we
 854     // wouldn't be using parts of it)
 855     wxSize size = GetClientSize();
 856     if ( m_virtualSize.x > size.x )
 857         size.x = m_virtualSize.x;
 858
 859     if ( m_virtualSize.y >= size.y )
 860         size.y = m_virtualSize.y;
 861
 862     return size;
 863 }
 864
 865 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 866 {
 867     // screen position is the same as (0, 0) in client coords for non TLWs (and
 868     // TLWs override this method)
 869     if ( x )
 870         *x = 0;
 871     if ( y )
 872         *y = 0;
 873
 874     ClientToScreen(x, y);
 875 }
 876
 877 void wxWindowBase::SendSizeEvent(int flags)
 878 {
 879     wxSizeEvent event(GetSize(), GetId());
 880     event.SetEventObject(this);
 881     if ( flags & wxSEND_EVENT_POST )
 882         wxPostEvent(this, event);
 883     else
 884         HandleWindowEvent(event);
 885 }
 886
 887 void wxWindowBase::SendSizeEventToParent(int flags)
 888 {
 889     wxWindow * const parent = GetParent();
 890     if ( parent && !parent->IsBeingDeleted() )
 891         parent->SendSizeEvent(flags);
 892 }
 893
 894 // ----------------------------------------------------------------------------
 895 // show/hide/enable/disable the window
 896 // ----------------------------------------------------------------------------
 897
 898 bool wxWindowBase::Show(bool show)
 899 {
 900     if ( show != m_isShown )
 901     {
 902         m_isShown = show;
 903
 904         return true;
 905     }
 906     else
 907     {
 908         return false;
 909     }
 910 }
 911
 912 bool wxWindowBase::IsEnabled() const
 913 {
 914     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 915 }
 916
 917 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 918 {
 919 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 920     DoEnable(enabled);
 921 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 922
 923     OnEnabled(enabled);
 924
 925     // If we are top-level then the logic doesn't apply - otherwise
 926     // showing a modal dialog would result in total greying out (and ungreying
 927     // out later) of everything which would be really ugly
 928     if ( IsTopLevel() )
 929         return;
 930
 931     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 932           node;
 933           node = node->GetNext() )
 934     {
 935         wxWindowBase * const child = node->GetData();
 936         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 937             child->NotifyWindowOnEnableChange(enabled);
 938     }
 939 }
 940
 941 bool wxWindowBase::Enable(bool enable)
 942 {
 943     if ( enable == IsThisEnabled() )
 944         return false;
 945
 946     m_isEnabled = enable;
 947
 948 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 949     DoEnable(enable);
 950 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 951     wxWindowBase * const parent = GetParent();
 952     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 953     {
 954         return true;
 955     }
 956 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 957
 958     NotifyWindowOnEnableChange(enable);
 959
 960     return true;
 961 }
 962
 963 bool wxWindowBase::IsShownOnScreen() const
 964 {
 965     // A window is shown on screen if it itself is shown and so are all its
 966     // parents. But if a window is toplevel one, then its always visible on
 967     // screen if IsShown() returns true, even if it has a hidden parent.
 968     return IsShown() &&
 969            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 970 }
 971
 972 // ----------------------------------------------------------------------------
 973 // RTTI
 974 // ----------------------------------------------------------------------------
 975
 976 bool wxWindowBase::IsTopLevel() const
 977 {
 978     return false;
 979 }
 980
 981 // ----------------------------------------------------------------------------
 982 // Freeze/Thaw
 983 // ----------------------------------------------------------------------------
 984
 985 void wxWindowBase::Freeze()
 986 {
 987     if ( !m_freezeCount++ )
 988     {
 989         // physically freeze this window:
 990         DoFreeze();
 991
 992         // and recursively freeze all children:
 993         for ( wxWindowList::iterator i = GetChildren().begin();
 994               i != GetChildren().end(); ++i )
 995         {
 996             wxWindow *child = *i;
 997             if ( child->IsTopLevel() )
 998                 continue;
 999
1000             child->Freeze();
1001         }
1002     }
1003 }
1004
1005 void wxWindowBase::Thaw()
1006 {
1007     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1008
1009     if ( !--m_freezeCount )
1010     {
1011         // recursively thaw all children:
1012         for ( wxWindowList::iterator i = GetChildren().begin();
1013               i != GetChildren().end(); ++i )
1014         {
1015             wxWindow *child = *i;
1016             if ( child->IsTopLevel() )
1017                 continue;
1018
1019             child->Thaw();
1020         }
1021
1022         // physically thaw this window:
1023         DoThaw();
1024     }
1025 }
1026
1027 // ----------------------------------------------------------------------------
1028 // reparenting the window
1029 // ----------------------------------------------------------------------------
1030
1031 void wxWindowBase::AddChild(wxWindowBase *child)
1032 {
1033     wxCHECK_RET( child, wxT("can't add a NULL child") );
1034
1035     // this should never happen and it will lead to a crash later if it does
1036     // because RemoveChild() will remove only one node from the children list
1037     // and the other(s) one(s) will be left with dangling pointers in them
1038     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
1039
1040     GetChildren().Append((wxWindow*)child);
1041     child->SetParent(this);
1042
1043     // adding a child while frozen will assert when thawed, so freeze it as if
1044     // it had been already present when we were frozen
1045     if ( IsFrozen() && !child->IsTopLevel() )
1046         child->Freeze();
1047 }
1048
1049 void wxWindowBase::RemoveChild(wxWindowBase *child)
1050 {
1051     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1052
1053     // removing a child while frozen may result in permanently frozen window
1054     // if used e.g. from Reparent(), so thaw it
1055     //
1056     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1057     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1058     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1059         child->Thaw();
1060
1061     GetChildren().DeleteObject((wxWindow *)child);
1062     child->SetParent(NULL);
1063 }
1064
1065 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1066 {
1067     wxWindow *oldParent = GetParent();
1068     if ( newParent == oldParent )
1069     {
1070         // nothing done
1071         return false;
1072     }
1073
1074     const bool oldEnabledState = IsEnabled();
1075
1076     // unlink this window from the existing parent.
1077     if ( oldParent )
1078     {
1079         oldParent->RemoveChild(this);
1080     }
1081     else
1082     {
1083         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1084     }
1085
1086     // add it to the new one
1087     if ( newParent )
1088     {
1089         newParent->AddChild(this);
1090     }
1091     else
1092     {
1093         wxTopLevelWindows.Append((wxWindow *)this);
1094     }
1095
1096     // We need to notify window (and its subwindows) if by changing the parent
1097     // we also change our enabled/disabled status.
1098     const bool newEnabledState = IsEnabled();
1099     if ( newEnabledState != oldEnabledState )
1100     {
1101         NotifyWindowOnEnableChange(newEnabledState);
1102     }
1103
1104     return true;
1105 }
1106
1107 // ----------------------------------------------------------------------------
1108 // event handler stuff
1109 // ----------------------------------------------------------------------------
1110
1111 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1112 {
1113     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1114
1115     m_eventHandler = handler;
1116 }
1117
1118 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1119 {
1120     // disable wxEvtHandler chain mechanism for wxWindows:
1121     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1122
1123     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1124 }
1125 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1126 {
1127     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1128     // handler of our stack when is destroyed will be Unlink()ed and thus
1129     // will call this function to update the pointer of this window...
1130
1131     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1132 }
1133
1134 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1135 {
1136     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1137
1138     // the new handler is going to be part of the wxWindow stack of event handlers:
1139     // it can't be part also of an event handler double-linked chain:
1140     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1141         "The handler being pushed in the wxWindow stack shouldn't be part of "
1142         "a wxEvtHandler chain; call Unlink() on it first");
1143
1144     wxEvtHandler *handlerOld = GetEventHandler();
1145     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1146
1147     // now use wxEvtHandler double-linked list to implement a stack:
1148     handlerToPush->SetNextHandler(handlerOld);
1149
1150     if (handlerOld != this)
1151         handlerOld->SetPreviousHandler(handlerToPush);
1152
1153     SetEventHandler(handlerToPush);
1154
1155 #if wxDEBUG_LEVEL
1156     // final checks of the operations done above:
1157     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1158         "the first handler of the wxWindow stack should "
1159         "have no previous handlers set" );
1160     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1161         "the first handler of the wxWindow stack should "
1162         "have non-NULL next handler" );
1163
1164     wxEvtHandler* pLast = handlerToPush;
1165     while ( pLast && pLast != this )
1166         pLast = pLast->GetNextHandler();
1167     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1168         "the last handler of the wxWindow stack should "
1169         "have this window as next handler" );
1170 #endif // wxDEBUG_LEVEL
1171 }
1172
1173 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1174 {
1175     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1176
1177     wxEvtHandler *firstHandler = GetEventHandler();
1178     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1179     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1180     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1181         "the first handler of the wxWindow stack should have no previous handlers set" );
1182
1183     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1184     wxCHECK_MSG( secondHandler != NULL, NULL,
1185         "the first handler of the wxWindow stack should have non-NULL next handler" );
1186
1187     firstHandler->SetNextHandler(NULL);
1188     secondHandler->SetPreviousHandler(NULL);
1189
1190     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1191     SetEventHandler(secondHandler);
1192
1193     if ( deleteHandler )
1194     {
1195         delete firstHandler;
1196         firstHandler = NULL;
1197     }
1198
1199     return firstHandler;
1200 }
1201
1202 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1203 {
1204     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1205     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1206
1207     if (handlerToRemove == GetEventHandler())
1208     {
1209         // removing the first event handler is equivalent to "popping" the stack
1210         PopEventHandler(false);
1211         return true;
1212     }
1213
1214     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1215     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1216     while ( handlerCur != this )
1217     {
1218         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1219
1220         if ( handlerCur == handlerToRemove )
1221         {
1222             handlerCur->Unlink();
1223
1224             wxASSERT_MSG( handlerCur != GetEventHandler(),
1225                         "the case Remove == Pop should was already handled" );
1226             return true;
1227         }
1228
1229         handlerCur = handlerNext;
1230     }
1231
1232     wxFAIL_MSG( _T("where has the event handler gone?") );
1233
1234     return false;
1235 }
1236
1237 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1238 {
1239     // SafelyProcessEvent() will handle exceptions nicely
1240     return GetEventHandler()->SafelyProcessEvent(event);
1241 }
1242
1243 // ----------------------------------------------------------------------------
1244 // colours, fonts &c
1245 // ----------------------------------------------------------------------------
1246
1247 void wxWindowBase::InheritAttributes()
1248 {
1249     const wxWindowBase * const parent = GetParent();
1250     if ( !parent )
1251         return;
1252
1253     // we only inherit attributes which had been explicitly set for the parent
1254     // which ensures that this only happens if the user really wants it and
1255     // not by default which wouldn't make any sense in modern GUIs where the
1256     // controls don't all use the same fonts (nor colours)
1257     if ( parent->m_inheritFont && !m_hasFont )
1258         SetFont(parent->GetFont());
1259
1260     // in addition, there is a possibility to explicitly forbid inheriting
1261     // colours at each class level by overriding ShouldInheritColours()
1262     if ( ShouldInheritColours() )
1263     {
1264         if ( parent->m_inheritFgCol && !m_hasFgCol )
1265             SetForegroundColour(parent->GetForegroundColour());
1266
1267         // inheriting (solid) background colour is wrong as it totally breaks
1268         // any kind of themed backgrounds
1269         //
1270         // instead, the controls should use the same background as their parent
1271         // (ideally by not drawing it at all)
1272 #if 0
1273         if ( parent->m_inheritBgCol && !m_hasBgCol )
1274             SetBackgroundColour(parent->GetBackgroundColour());
1275 #endif // 0
1276     }
1277 }
1278
1279 /* static */ wxVisualAttributes
1280 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1281 {
1282     // it is important to return valid values for all attributes from here,
1283     // GetXXX() below rely on this
1284     wxVisualAttributes attrs;
1285     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1286     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1287
1288     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1289     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1290     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1291     // colour on other platforms.
1292
1293 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1294     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1295 #else
1296     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1297 #endif
1298     return attrs;
1299 }
1300
1301 wxColour wxWindowBase::GetBackgroundColour() const
1302 {
1303     if ( !m_backgroundColour.IsOk() )
1304     {
1305         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1306
1307         // get our default background colour
1308         wxColour colBg = GetDefaultAttributes().colBg;
1309
1310         // we must return some valid colour to avoid redoing this every time
1311         // and also to avoid surprizing the applications written for older
1312         // wxWidgets versions where GetBackgroundColour() always returned
1313         // something -- so give them something even if it doesn't make sense
1314         // for this window (e.g. it has a themed background)
1315         if ( !colBg.Ok() )
1316             colBg = GetClassDefaultAttributes().colBg;
1317
1318         return colBg;
1319     }
1320     else
1321         return m_backgroundColour;
1322 }
1323
1324 wxColour wxWindowBase::GetForegroundColour() const
1325 {
1326     // logic is the same as above
1327     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1328     {
1329         wxColour colFg = GetDefaultAttributes().colFg;
1330
1331         if ( !colFg.IsOk() )
1332             colFg = GetClassDefaultAttributes().colFg;
1333
1334         return colFg;
1335     }
1336     else
1337         return m_foregroundColour;
1338 }
1339
1340 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1341 {
1342     if ( colour == m_backgroundColour )
1343         return false;
1344
1345     m_hasBgCol = colour.IsOk();
1346     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1347         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1348
1349     m_inheritBgCol = m_hasBgCol;
1350     m_backgroundColour = colour;
1351     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1352     return true;
1353 }
1354
1355 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1356 {
1357     if (colour == m_foregroundColour )
1358         return false;
1359
1360     m_hasFgCol = colour.IsOk();
1361     m_inheritFgCol = m_hasFgCol;
1362     m_foregroundColour = colour;
1363     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1364     return true;
1365 }
1366
1367 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1368 {
1369     // setting an invalid cursor is ok, it means that we don't have any special
1370     // cursor
1371     if ( m_cursor.IsSameAs(cursor) )
1372     {
1373         // no change
1374         return false;
1375     }
1376
1377     m_cursor = cursor;
1378
1379     return true;
1380 }
1381
1382 wxFont wxWindowBase::GetFont() const
1383 {
1384     // logic is the same as in GetBackgroundColour()
1385     if ( !m_font.IsOk() )
1386     {
1387         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1388
1389         wxFont font = GetDefaultAttributes().font;
1390         if ( !font.IsOk() )
1391             font = GetClassDefaultAttributes().font;
1392
1393         return font;
1394     }
1395     else
1396         return m_font;
1397 }
1398
1399 bool wxWindowBase::SetFont(const wxFont& font)
1400 {
1401     if ( font == m_font )
1402     {
1403         // no change
1404         return false;
1405     }
1406
1407     m_font = font;
1408     m_hasFont = font.IsOk();
1409     m_inheritFont = m_hasFont;
1410
1411     InvalidateBestSize();
1412
1413     return true;
1414 }
1415
1416 #if wxUSE_PALETTE
1417
1418 void wxWindowBase::SetPalette(const wxPalette& pal)
1419 {
1420     m_hasCustomPalette = true;
1421     m_palette = pal;
1422
1423     // VZ: can anyone explain me what do we do here?
1424     wxWindowDC d((wxWindow *) this);
1425     d.SetPalette(pal);
1426 }
1427
1428 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1429 {
1430     wxWindow *win = (wxWindow *)this;
1431     while ( win && !win->HasCustomPalette() )
1432     {
1433         win = win->GetParent();
1434     }
1435
1436     return win;
1437 }
1438
1439 #endif // wxUSE_PALETTE
1440
1441 #if wxUSE_CARET
1442 void wxWindowBase::SetCaret(wxCaret *caret)
1443 {
1444     if ( m_caret )
1445     {
1446         delete m_caret;
1447     }
1448
1449     m_caret = caret;
1450
1451     if ( m_caret )
1452     {
1453         wxASSERT_MSG( m_caret->GetWindow() == this,
1454                       wxT("caret should be created associated to this window") );
1455     }
1456 }
1457 #endif // wxUSE_CARET
1458
1459 #if wxUSE_VALIDATORS
1460 // ----------------------------------------------------------------------------
1461 // validators
1462 // ----------------------------------------------------------------------------
1463
1464 void wxWindowBase::SetValidator(const wxValidator& validator)
1465 {
1466     if ( m_windowValidator )
1467         delete m_windowValidator;
1468
1469     m_windowValidator = (wxValidator *)validator.Clone();
1470
1471     if ( m_windowValidator )
1472         m_windowValidator->SetWindow(this);
1473 }
1474 #endif // wxUSE_VALIDATORS
1475
1476 // ----------------------------------------------------------------------------
1477 // update region stuff
1478 // ----------------------------------------------------------------------------
1479
1480 wxRect wxWindowBase::GetUpdateClientRect() const
1481 {
1482     wxRegion rgnUpdate = GetUpdateRegion();
1483     rgnUpdate.Intersect(GetClientRect());
1484     wxRect rectUpdate = rgnUpdate.GetBox();
1485     wxPoint ptOrigin = GetClientAreaOrigin();
1486     rectUpdate.x -= ptOrigin.x;
1487     rectUpdate.y -= ptOrigin.y;
1488
1489     return rectUpdate;
1490 }
1491
1492 bool wxWindowBase::DoIsExposed(int x, int y) const
1493 {
1494     return m_updateRegion.Contains(x, y) != wxOutRegion;
1495 }
1496
1497 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1498 {
1499     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1500 }
1501
1502 void wxWindowBase::ClearBackground()
1503 {
1504     // wxGTK uses its own version, no need to add never used code
1505 #ifndef __WXGTK__
1506     wxClientDC dc((wxWindow *)this);
1507     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1508     dc.SetBackground(brush);
1509     dc.Clear();
1510 #endif // __WXGTK__
1511 }
1512
1513 // ----------------------------------------------------------------------------
1514 // find child window by id or name
1515 // ----------------------------------------------------------------------------
1516
1517 wxWindow *wxWindowBase::FindWindow(long id) const
1518 {
1519     if ( id == m_windowId )
1520         return (wxWindow *)this;
1521
1522     wxWindowBase *res = NULL;
1523     wxWindowList::compatibility_iterator node;
1524     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1525     {
1526         wxWindowBase *child = node->GetData();
1527         res = child->FindWindow( id );
1528     }
1529
1530     return (wxWindow *)res;
1531 }
1532
1533 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1534 {
1535     if ( name == m_windowName )
1536         return (wxWindow *)this;
1537
1538     wxWindowBase *res = NULL;
1539     wxWindowList::compatibility_iterator node;
1540     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1541     {
1542         wxWindow *child = node->GetData();
1543         res = child->FindWindow(name);
1544     }
1545
1546     return (wxWindow *)res;
1547 }
1548
1549
1550 // find any window by id or name or label: If parent is non-NULL, look through
1551 // children for a label or title matching the specified string. If NULL, look
1552 // through all top-level windows.
1553 //
1554 // to avoid duplicating code we reuse the same helper function but with
1555 // different comparators
1556
1557 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1558                                 const wxString& label, long id);
1559
1560 static
1561 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1562                            long WXUNUSED(id))
1563 {
1564     return win->GetLabel() == label;
1565 }
1566
1567 static
1568 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1569                           long WXUNUSED(id))
1570 {
1571     return win->GetName() == label;
1572 }
1573
1574 static
1575 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1576                         long id)
1577 {
1578     return win->GetId() == id;
1579 }
1580
1581 // recursive helper for the FindWindowByXXX() functions
1582 static
1583 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1584                                   const wxString& label,
1585                                   long id,
1586                                   wxFindWindowCmp cmp)
1587 {
1588     if ( parent )
1589     {
1590         // see if this is the one we're looking for
1591         if ( (*cmp)(parent, label, id) )
1592             return (wxWindow *)parent;
1593
1594         // It wasn't, so check all its children
1595         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1596               node;
1597               node = node->GetNext() )
1598         {
1599             // recursively check each child
1600             wxWindow *win = (wxWindow *)node->GetData();
1601             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1602             if (retwin)
1603                 return retwin;
1604         }
1605     }
1606
1607     // Not found
1608     return NULL;
1609 }
1610
1611 // helper for FindWindowByXXX()
1612 static
1613 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1614                              const wxString& label,
1615                              long id,
1616                              wxFindWindowCmp cmp)
1617 {
1618     if ( parent )
1619     {
1620         // just check parent and all its children
1621         return wxFindWindowRecursively(parent, label, id, cmp);
1622     }
1623
1624     // start at very top of wx's windows
1625     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1626           node;
1627           node = node->GetNext() )
1628     {
1629         // recursively check each window & its children
1630         wxWindow *win = node->GetData();
1631         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1632         if (retwin)
1633             return retwin;
1634     }
1635
1636     return NULL;
1637 }
1638
1639 /* static */
1640 wxWindow *
1641 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1642 {
1643     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1644 }
1645
1646 /* static */
1647 wxWindow *
1648 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1649 {
1650     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1651
1652     if ( !win )
1653     {
1654         // fall back to the label
1655         win = FindWindowByLabel(title, parent);
1656     }
1657
1658     return win;
1659 }
1660
1661 /* static */
1662 wxWindow *
1663 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1664 {
1665     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1666 }
1667
1668 // ----------------------------------------------------------------------------
1669 // dialog oriented functions
1670 // ----------------------------------------------------------------------------
1671
1672 void wxWindowBase::MakeModal(bool modal)
1673 {
1674     // Disable all other windows
1675     if ( IsTopLevel() )
1676     {
1677         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1678         while (node)
1679         {
1680             wxWindow *win = node->GetData();
1681             if (win != this)
1682                 win->Enable(!modal);
1683
1684             node = node->GetNext();
1685         }
1686     }
1687 }
1688
1689 bool wxWindowBase::Validate()
1690 {
1691 #if wxUSE_VALIDATORS
1692     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1693
1694     wxWindowList::compatibility_iterator node;
1695     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1696     {
1697         wxWindowBase *child = node->GetData();
1698         wxValidator *validator = child->GetValidator();
1699         if ( validator && !validator->Validate((wxWindow *)this) )
1700         {
1701             return false;
1702         }
1703
1704         if ( recurse && !child->Validate() )
1705         {
1706             return false;
1707         }
1708     }
1709 #endif // wxUSE_VALIDATORS
1710
1711     return true;
1712 }
1713
1714 bool wxWindowBase::TransferDataToWindow()
1715 {
1716 #if wxUSE_VALIDATORS
1717     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1718
1719     wxWindowList::compatibility_iterator node;
1720     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1721     {
1722         wxWindowBase *child = node->GetData();
1723         wxValidator *validator = child->GetValidator();
1724         if ( validator && !validator->TransferToWindow() )
1725         {
1726             wxLogWarning(_("Could not transfer data to window"));
1727 #if wxUSE_LOG
1728             wxLog::FlushActive();
1729 #endif // wxUSE_LOG
1730
1731             return false;
1732         }
1733
1734         if ( recurse )
1735         {
1736             if ( !child->TransferDataToWindow() )
1737             {
1738                 // warning already given
1739                 return false;
1740             }
1741         }
1742     }
1743 #endif // wxUSE_VALIDATORS
1744
1745     return true;
1746 }
1747
1748 bool wxWindowBase::TransferDataFromWindow()
1749 {
1750 #if wxUSE_VALIDATORS
1751     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1752
1753     wxWindowList::compatibility_iterator node;
1754     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1755     {
1756         wxWindow *child = node->GetData();
1757         wxValidator *validator = child->GetValidator();
1758         if ( validator && !validator->TransferFromWindow() )
1759         {
1760             // nop warning here because the application is supposed to give
1761             // one itself - we don't know here what might have gone wrongly
1762
1763             return false;
1764         }
1765
1766         if ( recurse )
1767         {
1768             if ( !child->TransferDataFromWindow() )
1769             {
1770                 // warning already given
1771                 return false;
1772             }
1773         }
1774     }
1775 #endif // wxUSE_VALIDATORS
1776
1777     return true;
1778 }
1779
1780 void wxWindowBase::InitDialog()
1781 {
1782     wxInitDialogEvent event(GetId());
1783     event.SetEventObject( this );
1784     GetEventHandler()->ProcessEvent(event);
1785 }
1786
1787 // ----------------------------------------------------------------------------
1788 // context-sensitive help support
1789 // ----------------------------------------------------------------------------
1790
1791 #if wxUSE_HELP
1792
1793 // associate this help text with this window
1794 void wxWindowBase::SetHelpText(const wxString& text)
1795 {
1796     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1797     if ( helpProvider )
1798     {
1799         helpProvider->AddHelp(this, text);
1800     }
1801 }
1802
1803 #if WXWIN_COMPATIBILITY_2_8
1804 // associate this help text with all windows with the same id as this
1805 // one
1806 void wxWindowBase::SetHelpTextForId(const wxString& text)
1807 {
1808     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1809     if ( helpProvider )
1810     {
1811         helpProvider->AddHelp(GetId(), text);
1812     }
1813 }
1814 #endif // WXWIN_COMPATIBILITY_2_8
1815
1816 // get the help string associated with this window (may be empty)
1817 // default implementation forwards calls to the help provider
1818 wxString
1819 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1820                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1821 {
1822     wxString text;
1823     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1824     if ( helpProvider )
1825     {
1826         text = helpProvider->GetHelp(this);
1827     }
1828
1829     return text;
1830 }
1831
1832 // show help for this window
1833 void wxWindowBase::OnHelp(wxHelpEvent& event)
1834 {
1835     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1836     if ( helpProvider )
1837     {
1838         wxPoint pos = event.GetPosition();
1839         const wxHelpEvent::Origin origin = event.GetOrigin();
1840         if ( origin == wxHelpEvent::Origin_Keyboard )
1841         {
1842             // if the help event was generated from keyboard it shouldn't
1843             // appear at the mouse position (which is still the only position
1844             // associated with help event) if the mouse is far away, although
1845             // we still do use the mouse position if it's over the window
1846             // because we suppose the user looks approximately at the mouse
1847             // already and so it would be more convenient than showing tooltip
1848             // at some arbitrary position which can be quite far from it
1849             const wxRect rectClient = GetClientRect();
1850             if ( !rectClient.Contains(ScreenToClient(pos)) )
1851             {
1852                 // position help slightly under and to the right of this window
1853                 pos = ClientToScreen(wxPoint(
1854                         2*GetCharWidth(),
1855                         rectClient.height + GetCharHeight()
1856                       ));
1857             }
1858         }
1859
1860         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1861         {
1862             // skip the event.Skip() below
1863             return;
1864         }
1865     }
1866
1867     event.Skip();
1868 }
1869
1870 #endif // wxUSE_HELP
1871
1872 // ----------------------------------------------------------------------------
1873 // tooltips
1874 // ----------------------------------------------------------------------------
1875
1876 #if wxUSE_TOOLTIPS
1877
1878 void wxWindowBase::SetToolTip( const wxString &tip )
1879 {
1880     // don't create the new tooltip if we already have one
1881     if ( m_tooltip )
1882     {
1883         m_tooltip->SetTip( tip );
1884     }
1885     else
1886     {
1887         SetToolTip( new wxToolTip( tip ) );
1888     }
1889
1890     // setting empty tooltip text does not remove the tooltip any more - use
1891     // SetToolTip(NULL) for this
1892 }
1893
1894 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1895 {
1896     if ( m_tooltip != tooltip )
1897     {
1898         if ( m_tooltip )
1899             delete m_tooltip;
1900
1901         m_tooltip = tooltip;
1902     }
1903 }
1904
1905 #endif // wxUSE_TOOLTIPS
1906
1907 // ----------------------------------------------------------------------------
1908 // constraints and sizers
1909 // ----------------------------------------------------------------------------
1910
1911 #if wxUSE_CONSTRAINTS
1912
1913 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1914 {
1915     if ( m_constraints )
1916     {
1917         UnsetConstraints(m_constraints);
1918         delete m_constraints;
1919     }
1920     m_constraints = constraints;
1921     if ( m_constraints )
1922     {
1923         // Make sure other windows know they're part of a 'meaningful relationship'
1924         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1925             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1926         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1927             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1928         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1929             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1930         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1931             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1932         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1933             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1934         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1935             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1936         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1937             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1938         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1939             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1940     }
1941 }
1942
1943 // This removes any dangling pointers to this window in other windows'
1944 // constraintsInvolvedIn lists.
1945 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1946 {
1947     if ( c )
1948     {
1949         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1950             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1951         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1952             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1953         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1954             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1955         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1956             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1957         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1958             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1959         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1960             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1961         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1962             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1963         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1964             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1965     }
1966 }
1967
1968 // Back-pointer to other windows we're involved with, so if we delete this
1969 // window, we must delete any constraints we're involved with.
1970 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1971 {
1972     if ( !m_constraintsInvolvedIn )
1973         m_constraintsInvolvedIn = new wxWindowList;
1974     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1975         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1976 }
1977
1978 // REMOVE back-pointer to other windows we're involved with.
1979 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1980 {
1981     if ( m_constraintsInvolvedIn )
1982         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1983 }
1984
1985 // Reset any constraints that mention this window
1986 void wxWindowBase::DeleteRelatedConstraints()
1987 {
1988     if ( m_constraintsInvolvedIn )
1989     {
1990         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1991         while (node)
1992         {
1993             wxWindow *win = node->GetData();
1994             wxLayoutConstraints *constr = win->GetConstraints();
1995
1996             // Reset any constraints involving this window
1997             if ( constr )
1998             {
1999                 constr->left.ResetIfWin(this);
2000                 constr->top.ResetIfWin(this);
2001                 constr->right.ResetIfWin(this);
2002                 constr->bottom.ResetIfWin(this);
2003                 constr->width.ResetIfWin(this);
2004                 constr->height.ResetIfWin(this);
2005                 constr->centreX.ResetIfWin(this);
2006                 constr->centreY.ResetIfWin(this);
2007             }
2008
2009             wxWindowList::compatibility_iterator next = node->GetNext();
2010             m_constraintsInvolvedIn->Erase(node);
2011             node = next;
2012         }
2013
2014         delete m_constraintsInvolvedIn;
2015         m_constraintsInvolvedIn = NULL;
2016     }
2017 }
2018
2019 #endif // wxUSE_CONSTRAINTS
2020
2021 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2022 {
2023     if ( sizer == m_windowSizer)
2024         return;
2025
2026     if ( m_windowSizer )
2027     {
2028         m_windowSizer->SetContainingWindow(NULL);
2029
2030         if ( deleteOld )
2031             delete m_windowSizer;
2032     }
2033
2034     m_windowSizer = sizer;
2035     if ( m_windowSizer )
2036     {
2037         m_windowSizer->SetContainingWindow((wxWindow *)this);
2038     }
2039
2040     SetAutoLayout(m_windowSizer != NULL);
2041 }
2042
2043 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2044 {
2045     SetSizer( sizer, deleteOld );
2046     sizer->SetSizeHints( (wxWindow*) this );
2047 }
2048
2049
2050 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2051 {
2052     // adding a window to a sizer twice is going to result in fatal and
2053     // hard to debug problems later because when deleting the second
2054     // associated wxSizerItem we're going to dereference a dangling
2055     // pointer; so try to detect this as early as possible
2056     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2057                   _T("Adding a window to the same sizer twice?") );
2058
2059     m_containingSizer = sizer;
2060 }
2061
2062 #if wxUSE_CONSTRAINTS
2063
2064 void wxWindowBase::SatisfyConstraints()
2065 {
2066     wxLayoutConstraints *constr = GetConstraints();
2067     bool wasOk = constr && constr->AreSatisfied();
2068
2069     ResetConstraints();   // Mark all constraints as unevaluated
2070
2071     int noChanges = 1;
2072
2073     // if we're a top level panel (i.e. our parent is frame/dialog), our
2074     // own constraints will never be satisfied any more unless we do it
2075     // here
2076     if ( wasOk )
2077     {
2078         while ( noChanges > 0 )
2079         {
2080             LayoutPhase1(&noChanges);
2081         }
2082     }
2083
2084     LayoutPhase2(&noChanges);
2085 }
2086
2087 #endif // wxUSE_CONSTRAINTS
2088
2089 bool wxWindowBase::Layout()
2090 {
2091     // If there is a sizer, use it instead of the constraints
2092     if ( GetSizer() )
2093     {
2094         int w = 0, h = 0;
2095         GetVirtualSize(&w, &h);
2096         GetSizer()->SetDimension( 0, 0, w, h );
2097     }
2098 #if wxUSE_CONSTRAINTS
2099     else
2100     {
2101         SatisfyConstraints(); // Find the right constraints values
2102         SetConstraintSizes(); // Recursively set the real window sizes
2103     }
2104 #endif
2105
2106     return true;
2107 }
2108
2109 #if wxUSE_CONSTRAINTS
2110
2111 // first phase of the constraints evaluation: set our own constraints
2112 bool wxWindowBase::LayoutPhase1(int *noChanges)
2113 {
2114     wxLayoutConstraints *constr = GetConstraints();
2115
2116     return !constr || constr->SatisfyConstraints(this, noChanges);
2117 }
2118
2119 // second phase: set the constraints for our children
2120 bool wxWindowBase::LayoutPhase2(int *noChanges)
2121 {
2122     *noChanges = 0;
2123
2124     // Layout children
2125     DoPhase(1);
2126
2127     // Layout grand children
2128     DoPhase(2);
2129
2130     return true;
2131 }
2132
2133 // Do a phase of evaluating child constraints
2134 bool wxWindowBase::DoPhase(int phase)
2135 {
2136     // the list containing the children for which the constraints are already
2137     // set correctly
2138     wxWindowList succeeded;
2139
2140     // the max number of iterations we loop before concluding that we can't set
2141     // the constraints
2142     static const int maxIterations = 500;
2143
2144     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2145     {
2146         int noChanges = 0;
2147
2148         // loop over all children setting their constraints
2149         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2150               node;
2151               node = node->GetNext() )
2152         {
2153             wxWindow *child = node->GetData();
2154             if ( child->IsTopLevel() )
2155             {
2156                 // top level children are not inside our client area
2157                 continue;
2158             }
2159
2160             if ( !child->GetConstraints() || succeeded.Find(child) )
2161             {
2162                 // this one is either already ok or nothing we can do about it
2163                 continue;
2164             }
2165
2166             int tempNoChanges = 0;
2167             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2168                                       : child->LayoutPhase2(&tempNoChanges);
2169             noChanges += tempNoChanges;
2170
2171             if ( success )
2172             {
2173                 succeeded.Append(child);
2174             }
2175         }
2176
2177         if ( !noChanges )
2178         {
2179             // constraints are set
2180             break;
2181         }
2182     }
2183
2184     return true;
2185 }
2186
2187 void wxWindowBase::ResetConstraints()
2188 {
2189     wxLayoutConstraints *constr = GetConstraints();
2190     if ( constr )
2191     {
2192         constr->left.SetDone(false);
2193         constr->top.SetDone(false);
2194         constr->right.SetDone(false);
2195         constr->bottom.SetDone(false);
2196         constr->width.SetDone(false);
2197         constr->height.SetDone(false);
2198         constr->centreX.SetDone(false);
2199         constr->centreY.SetDone(false);
2200     }
2201
2202     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2203     while (node)
2204     {
2205         wxWindow *win = node->GetData();
2206         if ( !win->IsTopLevel() )
2207             win->ResetConstraints();
2208         node = node->GetNext();
2209     }
2210 }
2211
2212 // Need to distinguish between setting the 'fake' size for windows and sizers,
2213 // and setting the real values.
2214 void wxWindowBase::SetConstraintSizes(bool recurse)
2215 {
2216     wxLayoutConstraints *constr = GetConstraints();
2217     if ( constr && constr->AreSatisfied() )
2218     {
2219         int x = constr->left.GetValue();
2220         int y = constr->top.GetValue();
2221         int w = constr->width.GetValue();
2222         int h = constr->height.GetValue();
2223
2224         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2225              (constr->height.GetRelationship() != wxAsIs) )
2226         {
2227             SetSize(x, y, w, h);
2228         }
2229         else
2230         {
2231             // If we don't want to resize this window, just move it...
2232             Move(x, y);
2233         }
2234     }
2235     else if ( constr )
2236     {
2237         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2238                    GetClassInfo()->GetClassName(),
2239                    GetName().c_str());
2240     }
2241
2242     if ( recurse )
2243     {
2244         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2245         while (node)
2246         {
2247             wxWindow *win = node->GetData();
2248             if ( !win->IsTopLevel() && win->GetConstraints() )
2249                 win->SetConstraintSizes();
2250             node = node->GetNext();
2251         }
2252     }
2253 }
2254
2255 // Only set the size/position of the constraint (if any)
2256 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2257 {
2258     wxLayoutConstraints *constr = GetConstraints();
2259     if ( constr )
2260     {
2261         if ( x != wxDefaultCoord )
2262         {
2263             constr->left.SetValue(x);
2264             constr->left.SetDone(true);
2265         }
2266         if ( y != wxDefaultCoord )
2267         {
2268             constr->top.SetValue(y);
2269             constr->top.SetDone(true);
2270         }
2271         if ( w != wxDefaultCoord )
2272         {
2273             constr->width.SetValue(w);
2274             constr->width.SetDone(true);
2275         }
2276         if ( h != wxDefaultCoord )
2277         {
2278             constr->height.SetValue(h);
2279             constr->height.SetDone(true);
2280         }
2281     }
2282 }
2283
2284 void wxWindowBase::MoveConstraint(int x, int y)
2285 {
2286     wxLayoutConstraints *constr = GetConstraints();
2287     if ( constr )
2288     {
2289         if ( x != wxDefaultCoord )
2290         {
2291             constr->left.SetValue(x);
2292             constr->left.SetDone(true);
2293         }
2294         if ( y != wxDefaultCoord )
2295         {
2296             constr->top.SetValue(y);
2297             constr->top.SetDone(true);
2298         }
2299     }
2300 }
2301
2302 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2303 {
2304     wxLayoutConstraints *constr = GetConstraints();
2305     if ( constr )
2306     {
2307         *w = constr->width.GetValue();
2308         *h = constr->height.GetValue();
2309     }
2310     else
2311         GetSize(w, h);
2312 }
2313
2314 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2315 {
2316     wxLayoutConstraints *constr = GetConstraints();
2317     if ( constr )
2318     {
2319         *w = constr->width.GetValue();
2320         *h = constr->height.GetValue();
2321     }
2322     else
2323         GetClientSize(w, h);
2324 }
2325
2326 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2327 {
2328     wxLayoutConstraints *constr = GetConstraints();
2329     if ( constr )
2330     {
2331         *x = constr->left.GetValue();
2332         *y = constr->top.GetValue();
2333     }
2334     else
2335         GetPosition(x, y);
2336 }
2337
2338 #endif // wxUSE_CONSTRAINTS
2339
2340 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2341 {
2342     // don't do it for the dialogs/frames - they float independently of their
2343     // parent
2344     if ( !IsTopLevel() )
2345     {
2346         wxWindow *parent = GetParent();
2347         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2348         {
2349             wxPoint pt(parent->GetClientAreaOrigin());
2350             x += pt.x;
2351             y += pt.y;
2352         }
2353     }
2354 }
2355
2356 // ----------------------------------------------------------------------------
2357 // Update UI processing
2358 // ----------------------------------------------------------------------------
2359
2360 void wxWindowBase::UpdateWindowUI(long flags)
2361 {
2362     wxUpdateUIEvent event(GetId());
2363     event.SetEventObject(this);
2364
2365     if ( GetEventHandler()->ProcessEvent(event) )
2366     {
2367         DoUpdateWindowUI(event);
2368     }
2369
2370     if (flags & wxUPDATE_UI_RECURSE)
2371     {
2372         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2373         while (node)
2374         {
2375             wxWindow* child = (wxWindow*) node->GetData();
2376             child->UpdateWindowUI(flags);
2377             node = node->GetNext();
2378         }
2379     }
2380 }
2381
2382 // do the window-specific processing after processing the update event
2383 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2384 {
2385     if ( event.GetSetEnabled() )
2386         Enable(event.GetEnabled());
2387
2388     if ( event.GetSetShown() )
2389         Show(event.GetShown());
2390 }
2391
2392 // ----------------------------------------------------------------------------
2393 // dialog units translations
2394 // ----------------------------------------------------------------------------
2395
2396 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2397 {
2398     int charWidth = GetCharWidth();
2399     int charHeight = GetCharHeight();
2400     wxPoint pt2 = wxDefaultPosition;
2401     if (pt.x != wxDefaultCoord)
2402         pt2.x = (int) ((pt.x * 4) / charWidth);
2403     if (pt.y != wxDefaultCoord)
2404         pt2.y = (int) ((pt.y * 8) / charHeight);
2405
2406     return pt2;
2407 }
2408
2409 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2410 {
2411     int charWidth = GetCharWidth();
2412     int charHeight = GetCharHeight();
2413     wxPoint pt2 = wxDefaultPosition;
2414     if (pt.x != wxDefaultCoord)
2415         pt2.x = (int) ((pt.x * charWidth) / 4);
2416     if (pt.y != wxDefaultCoord)
2417         pt2.y = (int) ((pt.y * charHeight) / 8);
2418
2419     return pt2;
2420 }
2421
2422 // ----------------------------------------------------------------------------
2423 // event handlers
2424 // ----------------------------------------------------------------------------
2425
2426 // propagate the colour change event to the subwindows
2427 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2428 {
2429     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2430     while ( node )
2431     {
2432         // Only propagate to non-top-level windows
2433         wxWindow *win = node->GetData();
2434         if ( !win->IsTopLevel() )
2435         {
2436             wxSysColourChangedEvent event2;
2437             event.SetEventObject(win);
2438             win->GetEventHandler()->ProcessEvent(event2);
2439         }
2440
2441         node = node->GetNext();
2442     }
2443
2444     Refresh();
2445 }
2446
2447 // the default action is to populate dialog with data when it's created,
2448 // and nudge the UI into displaying itself correctly in case
2449 // we've turned the wxUpdateUIEvents frequency down low.
2450 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2451 {
2452     TransferDataToWindow();
2453
2454     // Update the UI at this point
2455     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2456 }
2457
2458 // ----------------------------------------------------------------------------
2459 // menu-related functions
2460 // ----------------------------------------------------------------------------
2461
2462 #if wxUSE_MENUS
2463
2464 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2465 {
2466     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2467
2468     wxCurrentPopupMenu = menu;
2469     const bool rc = DoPopupMenu(menu, x, y);
2470     wxCurrentPopupMenu = NULL;
2471
2472     return rc;
2473 }
2474
2475 // this is used to pass the id of the selected item from the menu event handler
2476 // to the main function itself
2477 //
2478 // it's ok to use a global here as there can be at most one popup menu shown at
2479 // any time
2480 static int gs_popupMenuSelection = wxID_NONE;
2481
2482 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2483 {
2484     // store the id in a global variable where we'll retrieve it from later
2485     gs_popupMenuSelection = event.GetId();
2486 }
2487
2488 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2489 {
2490     // nothing to do but do not skip it
2491 }
2492
2493 int
2494 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2495 {
2496     gs_popupMenuSelection = wxID_NONE;
2497
2498     Connect(wxEVT_COMMAND_MENU_SELECTED,
2499             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2500             NULL,
2501             this);
2502
2503     // it is common to construct the menu passed to this function dynamically
2504     // using some fixed range of ids which could clash with the ids used
2505     // elsewhere in the program, which could result in some menu items being
2506     // unintentionally disabled or otherwise modified by update UI handlers
2507     // elsewhere in the program code and this is difficult to avoid in the
2508     // program itself, so instead we just temporarily suspend UI updating while
2509     // this menu is shown
2510     Connect(wxEVT_UPDATE_UI,
2511             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2512             NULL,
2513             this);
2514
2515     PopupMenu(&menu, x, y);
2516
2517     Disconnect(wxEVT_UPDATE_UI,
2518                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2519                NULL,
2520                this);
2521     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2522                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2523                NULL,
2524                this);
2525
2526     return gs_popupMenuSelection;
2527 }
2528
2529 #endif // wxUSE_MENUS
2530
2531 // methods for drawing the sizers in a visible way
2532 #ifdef __WXDEBUG__
2533
2534 static void DrawSizers(wxWindowBase *win);
2535
2536 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2537 {
2538     wxClientDC dc((wxWindow *)win);
2539     dc.SetPen(*pen);
2540     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2541                        *wxTRANSPARENT_BRUSH);
2542     dc.DrawRectangle(rect.Deflate(1, 1));
2543 }
2544
2545 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2546 {
2547     const wxSizerItemList& items = sizer->GetChildren();
2548     for ( wxSizerItemList::const_iterator i = items.begin(),
2549                                         end = items.end();
2550           i != end;
2551           ++i )
2552     {
2553         wxSizerItem *item = *i;
2554         if ( item->IsSizer() )
2555         {
2556             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2557             DrawSizer(win, item->GetSizer());
2558         }
2559         else if ( item->IsSpacer() )
2560         {
2561             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2562         }
2563         else if ( item->IsWindow() )
2564         {
2565             DrawSizers(item->GetWindow());
2566         }
2567         else
2568             wxFAIL_MSG("inconsistent wxSizerItem status!");
2569     }
2570 }
2571
2572 static void DrawSizers(wxWindowBase *win)
2573 {
2574     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2575
2576     wxSizer *sizer = win->GetSizer();
2577     if ( sizer )
2578     {
2579         DrawSizer(win, sizer);
2580     }
2581     else // no sizer, still recurse into the children
2582     {
2583         const wxWindowList& children = win->GetChildren();
2584         for ( wxWindowList::const_iterator i = children.begin(),
2585                                          end = children.end();
2586               i != end;
2587               ++i )
2588         {
2589             DrawSizers(*i);
2590         }
2591
2592         // show all kind of sizes of this window; see the "window sizing" topic
2593         // overview for more info about the various differences:
2594         wxSize fullSz = win->GetSize();
2595         wxSize clientSz = win->GetClientSize();
2596         wxSize bestSz = win->GetBestSize();
2597         wxSize minSz = win->GetMinSize();
2598         wxSize maxSz = win->GetMaxSize();
2599         wxSize virtualSz = win->GetVirtualSize();
2600
2601         wxMessageOutputDebug dbgout;
2602         dbgout.Printf(
2603             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2604             win->GetName(),
2605             fullSz.x, fullSz.y,
2606             clientSz.x, clientSz.y,
2607             bestSz.x, bestSz.y,
2608             minSz.x, minSz.y,
2609             maxSz.x, maxSz.y,
2610             virtualSz.x, virtualSz.y);
2611     }
2612 }
2613
2614 #endif // __WXDEBUG__
2615
2616 // process special middle clicks
2617 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2618 {
2619     if ( event.ControlDown() && event.AltDown() )
2620     {
2621 #ifdef __WXDEBUG__
2622         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2623         if ( event.ShiftDown() )
2624         {
2625             DrawSizers(this);
2626             return;
2627         }
2628 #endif // __WXDEBUG__
2629         ::wxInfoMessageBox((wxWindow*)this);
2630     }
2631     else
2632     {
2633         event.Skip();
2634     }
2635 }
2636
2637 // ----------------------------------------------------------------------------
2638 // accessibility
2639 // ----------------------------------------------------------------------------
2640
2641 #if wxUSE_ACCESSIBILITY
2642 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2643 {
2644     if (m_accessible && (accessible != m_accessible))
2645         delete m_accessible;
2646     m_accessible = accessible;
2647     if (m_accessible)
2648         m_accessible->SetWindow((wxWindow*) this);
2649 }
2650
2651 // Returns the accessible object, creating if necessary.
2652 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2653 {
2654     if (!m_accessible)
2655         m_accessible = CreateAccessible();
2656     return m_accessible;
2657 }
2658
2659 // Override to create a specific accessible object.
2660 wxAccessible* wxWindowBase::CreateAccessible()
2661 {
2662     return new wxWindowAccessible((wxWindow*) this);
2663 }
2664
2665 #endif
2666
2667 // ----------------------------------------------------------------------------
2668 // list classes implementation
2669 // ----------------------------------------------------------------------------
2670
2671 #if wxUSE_STL
2672
2673 #include "wx/listimpl.cpp"
2674 WX_DEFINE_LIST(wxWindowList)
2675
2676 #else // !wxUSE_STL
2677
2678 void wxWindowListNode::DeleteData()
2679 {
2680     delete (wxWindow *)GetData();
2681 }
2682
2683 #endif // wxUSE_STL/!wxUSE_STL
2684
2685 // ----------------------------------------------------------------------------
2686 // borders
2687 // ----------------------------------------------------------------------------
2688
2689 wxBorder wxWindowBase::GetBorder(long flags) const
2690 {
2691     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2692     if ( border == wxBORDER_DEFAULT )
2693     {
2694         border = GetDefaultBorder();
2695     }
2696     else if ( border == wxBORDER_THEME )
2697     {
2698         border = GetDefaultBorderForControl();
2699     }
2700
2701     return border;
2702 }
2703
2704 wxBorder wxWindowBase::GetDefaultBorder() const
2705 {
2706     return wxBORDER_NONE;
2707 }
2708
2709 // ----------------------------------------------------------------------------
2710 // hit testing
2711 // ----------------------------------------------------------------------------
2712
2713 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2714 {
2715     // here we just check if the point is inside the window or not
2716
2717     // check the top and left border first
2718     bool outside = x < 0 || y < 0;
2719     if ( !outside )
2720     {
2721         // check the right and bottom borders too
2722         wxSize size = GetSize();
2723         outside = x >= size.x || y >= size.y;
2724     }
2725
2726     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2727 }
2728
2729 // ----------------------------------------------------------------------------
2730 // mouse capture
2731 // ----------------------------------------------------------------------------
2732
2733 struct WXDLLEXPORT wxWindowNext
2734 {
2735     wxWindow *win;
2736     wxWindowNext *next;
2737 } *wxWindowBase::ms_winCaptureNext = NULL;
2738 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2739 bool wxWindowBase::ms_winCaptureChanging = false;
2740
2741 void wxWindowBase::CaptureMouse()
2742 {
2743     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), static_cast<void*>(this));
2744
2745     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2746
2747     ms_winCaptureChanging = true;
2748
2749     wxWindow *winOld = GetCapture();
2750     if ( winOld )
2751     {
2752         ((wxWindowBase*) winOld)->DoReleaseMouse();
2753
2754         // save it on stack
2755         wxWindowNext *item = new wxWindowNext;
2756         item->win = winOld;
2757         item->next = ms_winCaptureNext;
2758         ms_winCaptureNext = item;
2759     }
2760     //else: no mouse capture to save
2761
2762     DoCaptureMouse();
2763     ms_winCaptureCurrent = (wxWindow*)this;
2764
2765     ms_winCaptureChanging = false;
2766 }
2767
2768 void wxWindowBase::ReleaseMouse()
2769 {
2770     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), static_cast<void*>(this));
2771
2772     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2773
2774     wxASSERT_MSG( GetCapture() == this,
2775                   "attempt to release mouse, but this window hasn't captured it" );
2776     wxASSERT_MSG( ms_winCaptureCurrent == this,
2777                   "attempt to release mouse, but this window hasn't captured it" );
2778
2779     ms_winCaptureChanging = true;
2780
2781     DoReleaseMouse();
2782     ms_winCaptureCurrent = NULL;
2783
2784     if ( ms_winCaptureNext )
2785     {
2786         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2787         ms_winCaptureCurrent = ms_winCaptureNext->win;
2788
2789         wxWindowNext *item = ms_winCaptureNext;
2790         ms_winCaptureNext = item->next;
2791         delete item;
2792     }
2793     //else: stack is empty, no previous capture
2794
2795     ms_winCaptureChanging = false;
2796
2797     wxLogTrace(_T("mousecapture"),
2798         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2799         static_cast<void*>(GetCapture()));
2800 }
2801
2802 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2803 {
2804     wxMouseCaptureLostEvent event(win->GetId());
2805     event.SetEventObject(win);
2806     if ( !win->GetEventHandler()->ProcessEvent(event) )
2807     {
2808         // windows must handle this event, otherwise the app wouldn't behave
2809         // correctly if it loses capture unexpectedly; see the discussion here:
2810         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2811         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2812         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2813     }
2814 }
2815
2816 /* static */
2817 void wxWindowBase::NotifyCaptureLost()
2818 {
2819     // don't do anything if capture lost was expected, i.e. resulted from
2820     // a wx call to ReleaseMouse or CaptureMouse:
2821     if ( ms_winCaptureChanging )
2822         return;
2823
2824     // if the capture was lost unexpectedly, notify every window that has
2825     // capture (on stack or current) about it and clear the stack:
2826
2827     if ( ms_winCaptureCurrent )
2828     {
2829         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2830         ms_winCaptureCurrent = NULL;
2831     }
2832
2833     while ( ms_winCaptureNext )
2834     {
2835         wxWindowNext *item = ms_winCaptureNext;
2836         ms_winCaptureNext = item->next;
2837
2838         DoNotifyWindowAboutCaptureLost(item->win);
2839
2840         delete item;
2841     }
2842 }
2843
2844 #if wxUSE_HOTKEY
2845
2846 bool
2847 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2848                              int WXUNUSED(modifiers),
2849                              int WXUNUSED(keycode))
2850 {
2851     // not implemented
2852     return false;
2853 }
2854
2855 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2856 {
2857     // not implemented
2858     return false;
2859 }
2860
2861 #endif // wxUSE_HOTKEY
2862
2863 // ----------------------------------------------------------------------------
2864 // event processing
2865 // ----------------------------------------------------------------------------
2866
2867 bool wxWindowBase::TryBefore(wxEvent& event)
2868 {
2869 #if wxUSE_VALIDATORS
2870     // Can only use the validator of the window which
2871     // is receiving the event
2872     if ( event.GetEventObject() == this )
2873     {
2874         wxValidator * const validator = GetValidator();
2875         if ( validator && validator->ProcessEventHere(event) )
2876         {
2877             return true;
2878         }
2879     }
2880 #endif // wxUSE_VALIDATORS
2881
2882     return wxEvtHandler::TryBefore(event);
2883 }
2884
2885 bool wxWindowBase::TryAfter(wxEvent& event)
2886 {
2887     // carry on up the parent-child hierarchy if the propagation count hasn't
2888     // reached zero yet
2889     if ( event.ShouldPropagate() )
2890     {
2891         // honour the requests to stop propagation at this window: this is
2892         // used by the dialogs, for example, to prevent processing the events
2893         // from the dialog controls in the parent frame which rarely, if ever,
2894         // makes sense
2895         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2896         {
2897             wxWindow *parent = GetParent();
2898             if ( parent && !parent->IsBeingDeleted() )
2899             {
2900                 wxPropagateOnce propagateOnce(event);
2901
2902                 return parent->GetEventHandler()->ProcessEvent(event);
2903             }
2904         }
2905     }
2906
2907     return wxEvtHandler::TryAfter(event);
2908 }
2909
2910 // ----------------------------------------------------------------------------
2911 // window relationships
2912 // ----------------------------------------------------------------------------
2913
2914 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2915 {
2916     wxCHECK_MSG( GetParent(), NULL,
2917                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2918
2919     wxWindowList& siblings = GetParent()->GetChildren();
2920     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2921     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2922
2923     if ( order == OrderBefore )
2924         i = i->GetPrevious();
2925     else // OrderAfter
2926         i = i->GetNext();
2927
2928     return i ? i->GetData() : NULL;
2929 }
2930
2931 // ----------------------------------------------------------------------------
2932 // keyboard navigation
2933 // ----------------------------------------------------------------------------
2934
2935 // Navigates in the specified direction inside this window
2936 bool wxWindowBase::DoNavigateIn(int flags)
2937 {
2938 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2939     // native code doesn't process our wxNavigationKeyEvents anyhow
2940     wxUnusedVar(flags);
2941     return false;
2942 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2943     wxNavigationKeyEvent eventNav;
2944     wxWindow *focused = FindFocus();
2945     eventNav.SetCurrentFocus(focused);
2946     eventNav.SetEventObject(focused);
2947     eventNav.SetFlags(flags);
2948     return GetEventHandler()->ProcessEvent(eventNav);
2949 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2950 }
2951
2952 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2953 {
2954     if ( event.GetKeyCode() != WXK_TAB )
2955         return false;
2956
2957     int flags = wxNavigationKeyEvent::FromTab;
2958
2959     if ( event.ShiftDown() )
2960         flags |= wxNavigationKeyEvent::IsBackward;
2961     else
2962         flags |= wxNavigationKeyEvent::IsForward;
2963
2964     if ( event.ControlDown() )
2965         flags |= wxNavigationKeyEvent::WinChange;
2966
2967     Navigate(flags);
2968     return true;
2969 }
2970
2971 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2972 {
2973     // check that we're not a top level window
2974     wxCHECK_RET( GetParent(),
2975                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2976
2977     // detect the special case when we have nothing to do anyhow and when the
2978     // code below wouldn't work
2979     if ( win == this )
2980         return;
2981
2982     // find the target window in the siblings list
2983     wxWindowList& siblings = GetParent()->GetChildren();
2984     wxWindowList::compatibility_iterator i = siblings.Find(win);
2985     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2986
2987     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2988     // can't just move the node around
2989     wxWindow *self = (wxWindow *)this;
2990     siblings.DeleteObject(self);
2991     if ( move == OrderAfter )
2992     {
2993         i = i->GetNext();
2994     }
2995
2996     if ( i )
2997     {
2998         siblings.Insert(i, self);
2999     }
3000     else // OrderAfter and win was the last sibling
3001     {
3002         siblings.Append(self);
3003     }
3004 }
3005
3006 // ----------------------------------------------------------------------------
3007 // focus handling
3008 // ----------------------------------------------------------------------------
3009
3010 /*static*/ wxWindow* wxWindowBase::FindFocus()
3011 {
3012     wxWindowBase *win = DoFindFocus();
3013     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3014 }
3015
3016 bool wxWindowBase::HasFocus() const
3017 {
3018     wxWindowBase *win = DoFindFocus();
3019     return win == this ||
3020            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3021 }
3022
3023 // ----------------------------------------------------------------------------
3024 // drag and drop
3025 // ----------------------------------------------------------------------------
3026
3027 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3028
3029 namespace
3030 {
3031
3032 class DragAcceptFilesTarget : public wxFileDropTarget
3033 {
3034 public:
3035     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3036
3037     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3038                              const wxArrayString& filenames)
3039     {
3040         wxDropFilesEvent event(wxEVT_DROP_FILES,
3041                                filenames.size(),
3042                                wxCArrayString(filenames).Release());
3043         event.SetEventObject(m_win);
3044         event.m_pos.x = x;
3045         event.m_pos.y = y;
3046
3047         return m_win->HandleWindowEvent(event);
3048     }
3049
3050 private:
3051     wxWindowBase * const m_win;
3052
3053     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3054 };
3055
3056
3057 } // anonymous namespace
3058
3059 // Generic version of DragAcceptFiles(). It works by installing a simple
3060 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3061 // together with explicit SetDropTarget() calls.
3062 void wxWindowBase::DragAcceptFiles(bool accept)
3063 {
3064     if ( accept )
3065     {
3066         wxASSERT_MSG( !GetDropTarget(),
3067                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3068         SetDropTarget(new DragAcceptFilesTarget(this));
3069     }
3070     else
3071     {
3072         SetDropTarget(NULL);
3073     }
3074 }
3075
3076 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3077
3078 // ----------------------------------------------------------------------------
3079 // global functions
3080 // ----------------------------------------------------------------------------
3081
3082 wxWindow* wxGetTopLevelParent(wxWindow *win)
3083 {
3084     while ( win && !win->IsTopLevel() )
3085          win = win->GetParent();
3086
3087     return win;
3088 }
3089
3090 #if wxUSE_ACCESSIBILITY
3091 // ----------------------------------------------------------------------------
3092 // accessible object for windows
3093 // ----------------------------------------------------------------------------
3094
3095 // Can return either a child object, or an integer
3096 // representing the child element, starting from 1.
3097 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3098 {
3099     wxASSERT( GetWindow() != NULL );
3100     if (!GetWindow())
3101         return wxACC_FAIL;
3102
3103     return wxACC_NOT_IMPLEMENTED;
3104 }
3105
3106 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3107 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3108 {
3109     wxASSERT( GetWindow() != NULL );
3110     if (!GetWindow())
3111         return wxACC_FAIL;
3112
3113     wxWindow* win = NULL;
3114     if (elementId == 0)
3115     {
3116         win = GetWindow();
3117     }
3118     else
3119     {
3120         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3121         {
3122             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3123         }
3124         else
3125             return wxACC_FAIL;
3126     }
3127     if (win)
3128     {
3129         rect = win->GetRect();
3130         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3131             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3132         return wxACC_OK;
3133     }
3134
3135     return wxACC_NOT_IMPLEMENTED;
3136 }
3137
3138 // Navigates from fromId to toId/toObject.
3139 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3140                              int* WXUNUSED(toId), wxAccessible** toObject)
3141 {
3142     wxASSERT( GetWindow() != NULL );
3143     if (!GetWindow())
3144         return wxACC_FAIL;
3145
3146     switch (navDir)
3147     {
3148     case wxNAVDIR_FIRSTCHILD:
3149         {
3150             if (GetWindow()->GetChildren().GetCount() == 0)
3151                 return wxACC_FALSE;
3152             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3153             *toObject = childWindow->GetOrCreateAccessible();
3154
3155             return wxACC_OK;
3156         }
3157     case wxNAVDIR_LASTCHILD:
3158         {
3159             if (GetWindow()->GetChildren().GetCount() == 0)
3160                 return wxACC_FALSE;
3161             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3162             *toObject = childWindow->GetOrCreateAccessible();
3163
3164             return wxACC_OK;
3165         }
3166     case wxNAVDIR_RIGHT:
3167     case wxNAVDIR_DOWN:
3168     case wxNAVDIR_NEXT:
3169         {
3170             wxWindowList::compatibility_iterator node =
3171                 wxWindowList::compatibility_iterator();
3172             if (fromId == 0)
3173             {
3174                 // Can't navigate to sibling of this window
3175                 // if we're a top-level window.
3176                 if (!GetWindow()->GetParent())
3177                     return wxACC_NOT_IMPLEMENTED;
3178
3179                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3180             }
3181             else
3182             {
3183                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3184                     node = GetWindow()->GetChildren().Item(fromId-1);
3185             }
3186
3187             if (node && node->GetNext())
3188             {
3189                 wxWindow* nextWindow = node->GetNext()->GetData();
3190                 *toObject = nextWindow->GetOrCreateAccessible();
3191                 return wxACC_OK;
3192             }
3193             else
3194                 return wxACC_FALSE;
3195         }
3196     case wxNAVDIR_LEFT:
3197     case wxNAVDIR_UP:
3198     case wxNAVDIR_PREVIOUS:
3199         {
3200             wxWindowList::compatibility_iterator node =
3201                 wxWindowList::compatibility_iterator();
3202             if (fromId == 0)
3203             {
3204                 // Can't navigate to sibling of this window
3205                 // if we're a top-level window.
3206                 if (!GetWindow()->GetParent())
3207                     return wxACC_NOT_IMPLEMENTED;
3208
3209                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3210             }
3211             else
3212             {
3213                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3214                     node = GetWindow()->GetChildren().Item(fromId-1);
3215             }
3216
3217             if (node && node->GetPrevious())
3218             {
3219                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3220                 *toObject = previousWindow->GetOrCreateAccessible();
3221                 return wxACC_OK;
3222             }
3223             else
3224                 return wxACC_FALSE;
3225         }
3226     }
3227
3228     return wxACC_NOT_IMPLEMENTED;
3229 }
3230
3231 // Gets the name of the specified object.
3232 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3233 {
3234     wxASSERT( GetWindow() != NULL );
3235     if (!GetWindow())
3236         return wxACC_FAIL;
3237
3238     wxString title;
3239
3240     // If a child, leave wxWidgets to call the function on the actual
3241     // child object.
3242     if (childId > 0)
3243         return wxACC_NOT_IMPLEMENTED;
3244
3245     // This will eventually be replaced by specialised
3246     // accessible classes, one for each kind of wxWidgets
3247     // control or window.
3248 #if wxUSE_BUTTON
3249     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3250         title = ((wxButton*) GetWindow())->GetLabel();
3251     else
3252 #endif
3253         title = GetWindow()->GetName();
3254
3255     if (!title.empty())
3256     {
3257         *name = title;
3258         return wxACC_OK;
3259     }
3260     else
3261         return wxACC_NOT_IMPLEMENTED;
3262 }
3263
3264 // Gets the number of children.
3265 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3266 {
3267     wxASSERT( GetWindow() != NULL );
3268     if (!GetWindow())
3269         return wxACC_FAIL;
3270
3271     *childId = (int) GetWindow()->GetChildren().GetCount();
3272     return wxACC_OK;
3273 }
3274
3275 // Gets the specified child (starting from 1).
3276 // If *child is NULL and return value is wxACC_OK,
3277 // this means that the child is a simple element and
3278 // not an accessible object.
3279 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3280 {
3281     wxASSERT( GetWindow() != NULL );
3282     if (!GetWindow())
3283         return wxACC_FAIL;
3284
3285     if (childId == 0)
3286     {
3287         *child = this;
3288         return wxACC_OK;
3289     }
3290
3291     if (childId > (int) GetWindow()->GetChildren().GetCount())
3292         return wxACC_FAIL;
3293
3294     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3295     *child = childWindow->GetOrCreateAccessible();
3296     if (*child)
3297         return wxACC_OK;
3298     else
3299         return wxACC_FAIL;
3300 }
3301
3302 // Gets the parent, or NULL.
3303 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3304 {
3305     wxASSERT( GetWindow() != NULL );
3306     if (!GetWindow())
3307         return wxACC_FAIL;
3308
3309     wxWindow* parentWindow = GetWindow()->GetParent();
3310     if (!parentWindow)
3311     {
3312         *parent = NULL;
3313         return wxACC_OK;
3314     }
3315     else
3316     {
3317         *parent = parentWindow->GetOrCreateAccessible();
3318         if (*parent)
3319             return wxACC_OK;
3320         else
3321             return wxACC_FAIL;
3322     }
3323 }
3324
3325 // Performs the default action. childId is 0 (the action for this object)
3326 // or > 0 (the action for a child).
3327 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3328 // window (e.g. an edit control).
3329 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3330 {
3331     wxASSERT( GetWindow() != NULL );
3332     if (!GetWindow())
3333         return wxACC_FAIL;
3334
3335     return wxACC_NOT_IMPLEMENTED;
3336 }
3337
3338 // Gets the default action for this object (0) or > 0 (the action for a child).
3339 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3340 // string if there is no action.
3341 // The retrieved string describes the action that is performed on an object,
3342 // not what the object does as a result. For example, a toolbar button that prints
3343 // a document has a default action of "Press" rather than "Prints the current document."
3344 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3345 {
3346     wxASSERT( GetWindow() != NULL );
3347     if (!GetWindow())
3348         return wxACC_FAIL;
3349
3350     return wxACC_NOT_IMPLEMENTED;
3351 }
3352
3353 // Returns the description for this object or a child.
3354 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3355 {
3356     wxASSERT( GetWindow() != NULL );
3357     if (!GetWindow())
3358         return wxACC_FAIL;
3359
3360     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3361     if (!ht.empty())
3362     {
3363         *description = ht;
3364         return wxACC_OK;
3365     }
3366     return wxACC_NOT_IMPLEMENTED;
3367 }
3368
3369 // Returns help text for this object or a child, similar to tooltip text.
3370 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3371 {
3372     wxASSERT( GetWindow() != NULL );
3373     if (!GetWindow())
3374         return wxACC_FAIL;
3375
3376     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3377     if (!ht.empty())
3378     {
3379         *helpText = ht;
3380         return wxACC_OK;
3381     }
3382     return wxACC_NOT_IMPLEMENTED;
3383 }
3384
3385 // Returns the keyboard shortcut for this object or child.
3386 // Return e.g. ALT+K
3387 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3388 {
3389     wxASSERT( GetWindow() != NULL );
3390     if (!GetWindow())
3391         return wxACC_FAIL;
3392
3393     return wxACC_NOT_IMPLEMENTED;
3394 }
3395
3396 // Returns a role constant.
3397 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3398 {
3399     wxASSERT( GetWindow() != NULL );
3400     if (!GetWindow())
3401         return wxACC_FAIL;
3402
3403     // If a child, leave wxWidgets to call the function on the actual
3404     // child object.
3405     if (childId > 0)
3406         return wxACC_NOT_IMPLEMENTED;
3407
3408     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3409         return wxACC_NOT_IMPLEMENTED;
3410 #if wxUSE_STATUSBAR
3411     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3412         return wxACC_NOT_IMPLEMENTED;
3413 #endif
3414 #if wxUSE_TOOLBAR
3415     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3416         return wxACC_NOT_IMPLEMENTED;
3417 #endif
3418
3419     //*role = wxROLE_SYSTEM_CLIENT;
3420     *role = wxROLE_SYSTEM_CLIENT;
3421     return wxACC_OK;
3422
3423     #if 0
3424     return wxACC_NOT_IMPLEMENTED;
3425     #endif
3426 }
3427
3428 // Returns a state constant.
3429 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3430 {
3431     wxASSERT( GetWindow() != NULL );
3432     if (!GetWindow())
3433         return wxACC_FAIL;
3434
3435     // If a child, leave wxWidgets to call the function on the actual
3436     // child object.
3437     if (childId > 0)
3438         return wxACC_NOT_IMPLEMENTED;
3439
3440     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3441         return wxACC_NOT_IMPLEMENTED;
3442
3443 #if wxUSE_STATUSBAR
3444     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3445         return wxACC_NOT_IMPLEMENTED;
3446 #endif
3447 #if wxUSE_TOOLBAR
3448     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3449         return wxACC_NOT_IMPLEMENTED;
3450 #endif
3451
3452     *state = 0;
3453     return wxACC_OK;
3454
3455     #if 0
3456     return wxACC_NOT_IMPLEMENTED;
3457     #endif
3458 }
3459
3460 // Returns a localized string representing the value for the object
3461 // or child.
3462 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3463 {
3464     wxASSERT( GetWindow() != NULL );
3465     if (!GetWindow())
3466         return wxACC_FAIL;
3467
3468     return wxACC_NOT_IMPLEMENTED;
3469 }
3470
3471 // Selects the object or child.
3472 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3473 {
3474     wxASSERT( GetWindow() != NULL );
3475     if (!GetWindow())
3476         return wxACC_FAIL;
3477
3478     return wxACC_NOT_IMPLEMENTED;
3479 }
3480
3481 // Gets the window with the keyboard focus.
3482 // If childId is 0 and child is NULL, no object in
3483 // this subhierarchy has the focus.
3484 // If this object has the focus, child should be 'this'.
3485 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3486 {
3487     wxASSERT( GetWindow() != NULL );
3488     if (!GetWindow())
3489         return wxACC_FAIL;
3490
3491     return wxACC_NOT_IMPLEMENTED;
3492 }
3493
3494 #if wxUSE_VARIANT
3495 // Gets a variant representing the selected children
3496 // of this object.
3497 // Acceptable values:
3498 // - a null variant (IsNull() returns true)
3499 // - a list variant (GetType() == wxT("list")
3500 // - an integer representing the selected child element,
3501 //   or 0 if this object is selected (GetType() == wxT("long")
3502 // - a "void*" pointer to a wxAccessible child object
3503 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3504 {
3505     wxASSERT( GetWindow() != NULL );
3506     if (!GetWindow())
3507         return wxACC_FAIL;
3508
3509     return wxACC_NOT_IMPLEMENTED;
3510 }
3511 #endif // wxUSE_VARIANT
3512
3513 #endif // wxUSE_ACCESSIBILITY
3514
3515 // ----------------------------------------------------------------------------
3516 // RTL support
3517 // ----------------------------------------------------------------------------
3518
3519 wxCoord
3520 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3521                                        wxCoord width,
3522                                        wxCoord widthTotal) const
3523 {
3524     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3525     {
3526         x = widthTotal - x - width;
3527     }
3528
3529     return x;
3530 }
3531
3532