src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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) wxWindows team
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/textctrl.h"
  42     #include "wx/settings.h"
  43     #include "wx/dialog.h"
  44     #include "wx/msgdlg.h"
  45     #include "wx/statusbr.h"
  46 #endif //WX_PRECOMP
  47
  48 #if wxUSE_CONSTRAINTS
  49     #include "wx/layout.h"
  50 #endif // wxUSE_CONSTRAINTS
  51
  52 #include "wx/sizer.h"
  53
  54 #if wxUSE_DRAG_AND_DROP
  55     #include "wx/dnd.h"
  56 #endif // wxUSE_DRAG_AND_DROP
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 // ----------------------------------------------------------------------------
  71 // static data
  72 // ----------------------------------------------------------------------------
  73
  74 int wxWindowBase::ms_lastControlId = -200;
  75
  76 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  77
  78 // ----------------------------------------------------------------------------
  79 // event table
  80 // ----------------------------------------------------------------------------
  81
  82 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  83     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  84     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  85     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  86
  87 #if wxUSE_HELP
  88     EVT_HELP(-1, wxWindowBase::OnHelp)
  89 #endif // wxUSE_HELP
  90
  91 END_EVENT_TABLE()
  92
  93 // ============================================================================
  94 // implementation of the common functionality of the wxWindow class
  95 // ============================================================================
  96
  97 // ----------------------------------------------------------------------------
  98 // initialization
  99 // ----------------------------------------------------------------------------
 100
 101 // the default initialization
 102 void wxWindowBase::InitBase()
 103 {
 104     // no window yet, no parent nor children
 105     m_parent = (wxWindow *)NULL;
 106     m_windowId = -1;
 107     m_children.DeleteContents( FALSE ); // don't auto delete node data
 108
 109     // no constraints on the minimal window size
 110     m_minWidth =
 111     m_minHeight =
 112     m_maxWidth =
 113     m_maxHeight = -1;
 114
 115     // window is created enabled but it's not visible yet
 116     m_isShown = FALSE;
 117     m_isEnabled = TRUE;
 118
 119     // the default event handler is just this window
 120     m_eventHandler = this;
 121
 122 #if wxUSE_VALIDATORS
 123     // no validator
 124     m_windowValidator = (wxValidator *) NULL;
 125 #endif // wxUSE_VALIDATORS
 126
 127     // use the system default colours
 128     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 129     m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 130
 131     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 132     // so the font is *not* really set - but calls to SetFont() later won't do
 133     // anything because m_font appears to be already set!
 134 #ifndef __WXMSW__
 135     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 136 #endif // __WXMSW__
 137
 138     // the colours/fonts are default for now
 139     m_hasBgCol =
 140     m_hasFgCol =
 141     m_hasFont = FALSE;
 142
 143     // no style bits
 144     m_exStyle =
 145     m_windowStyle = 0;
 146
 147     // an optimization for the event processing: checking this flag is much
 148     // faster than using IsKindOf(CLASSINFO(wxWindow))
 149     m_isWindow = TRUE;
 150
 151 #if wxUSE_CONSTRAINTS
 152     // no constraints whatsoever
 153     m_constraints = (wxLayoutConstraints *) NULL;
 154     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 155 #endif // wxUSE_CONSTRAINTS
 156
 157     m_windowSizer = (wxSizer *) NULL;
 158     m_containingSizer = (wxSizer *) NULL;
 159     m_autoLayout = FALSE;
 160
 161 #if wxUSE_DRAG_AND_DROP
 162     m_dropTarget = (wxDropTarget *)NULL;
 163 #endif // wxUSE_DRAG_AND_DROP
 164
 165 #if wxUSE_TOOLTIPS
 166     m_tooltip = (wxToolTip *)NULL;
 167 #endif // wxUSE_TOOLTIPS
 168
 169 #if wxUSE_CARET
 170     m_caret = (wxCaret *)NULL;
 171 #endif // wxUSE_CARET
 172
 173 #if wxUSE_PALETTE
 174     m_hasCustomPalette = FALSE;
 175 #endif // wxUSE_PALETTE
 176
 177     m_virtualSize = wxDefaultSize;
 178     m_minVirtualWidth = -1;
 179     m_minVirtualHeight = -1;
 180     m_maxVirtualWidth = -1;
 181     m_maxVirtualHeight = -1;
 182
 183     // Whether we're using the current theme for this window (wxGTK only for now)
 184     m_themeEnabled = FALSE;
 185 }
 186
 187 // common part of window creation process
 188 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 189                               wxWindowID id,
 190                               const wxPoint& WXUNUSED(pos),
 191                               const wxSize& WXUNUSED(size),
 192                               long style,
 193                               const wxValidator& validator,
 194                               const wxString& name)
 195 {
 196     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
 197     // member variables - check that it has been called (will catch the case
 198     // when a new ctor is added which doesn't call InitWindow)
 199     wxASSERT_MSG( m_isWindow, wxT("Init() must have been called before!") );
 200
 201     // generate a new id if the user doesn't care about it
 202     m_windowId = id == -1 ? NewControlId() : id;
 203
 204     SetName(name);
 205     SetWindowStyleFlag(style);
 206     SetParent(parent);
 207
 208 #if wxUSE_VALIDATORS
 209     SetValidator(validator);
 210 #endif // wxUSE_VALIDATORS
 211
 212     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 213     // have it too - like this it's possible to set it only in the top level
 214     // dialog/frame and all children will inherit it by defult
 215     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 216     {
 217         SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
 218     }
 219
 220     return TRUE;
 221 }
 222
 223 // ----------------------------------------------------------------------------
 224 // destruction
 225 // ----------------------------------------------------------------------------
 226
 227 // common clean up
 228 wxWindowBase::~wxWindowBase()
 229 {
 230     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 231
 232     // FIXME if these 2 cases result from programming errors in the user code
 233     //       we should probably assert here instead of silently fixing them
 234
 235     // Just in case the window has been Closed, but we're then deleting
 236     // immediately: don't leave dangling pointers.
 237     wxPendingDelete.DeleteObject(this);
 238
 239     // Just in case we've loaded a top-level window via LoadNativeDialog but
 240     // we weren't a dialog class
 241     wxTopLevelWindows.DeleteObject(this);
 242
 243     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 244
 245 #if wxUSE_CARET
 246     if ( m_caret )
 247         delete m_caret;
 248 #endif // wxUSE_CARET
 249
 250 #if wxUSE_VALIDATORS
 251     if ( m_windowValidator )
 252         delete m_windowValidator;
 253 #endif // wxUSE_VALIDATORS
 254
 255 #if wxUSE_CONSTRAINTS
 256     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 257     // at deleted windows as they delete themselves.
 258     DeleteRelatedConstraints();
 259
 260     if ( m_constraints )
 261     {
 262         // This removes any dangling pointers to this window in other windows'
 263         // constraintsInvolvedIn lists.
 264         UnsetConstraints(m_constraints);
 265         delete m_constraints;
 266         m_constraints = NULL;
 267     }
 268
 269 #endif // wxUSE_CONSTRAINTS
 270
 271     if ( m_containingSizer )
 272         m_containingSizer->Remove((wxWindow*)this);
 273
 274     if ( m_windowSizer )
 275         delete m_windowSizer;
 276
 277 #if wxUSE_DRAG_AND_DROP
 278     if ( m_dropTarget )
 279         delete m_dropTarget;
 280 #endif // wxUSE_DRAG_AND_DROP
 281
 282 #if wxUSE_TOOLTIPS
 283     if ( m_tooltip )
 284         delete m_tooltip;
 285 #endif // wxUSE_TOOLTIPS
 286
 287     // reset the dangling pointer our parent window may keep to us
 288     if ( m_parent && m_parent->GetDefaultItem() == this )
 289     {
 290         m_parent->SetDefaultItem(NULL);
 291     }
 292 }
 293
 294 bool wxWindowBase::Destroy()
 295 {
 296     delete this;
 297
 298     return TRUE;
 299 }
 300
 301 bool wxWindowBase::Close(bool force)
 302 {
 303     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 304     event.SetEventObject(this);
 305 #if WXWIN_COMPATIBILITY
 306     event.SetForce(force);
 307 #endif // WXWIN_COMPATIBILITY
 308     event.SetCanVeto(!force);
 309
 310     // return FALSE if window wasn't closed because the application vetoed the
 311     // close event
 312     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 313 }
 314
 315 bool wxWindowBase::DestroyChildren()
 316 {
 317     wxWindowList::Node *node;
 318     for ( ;; )
 319     {
 320         // we iterate until the list becomes empty
 321         node = GetChildren().GetFirst();
 322         if ( !node )
 323             break;
 324
 325         wxWindow *child = node->GetData();
 326
 327         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 328
 329         child->Show(FALSE);
 330         delete child;
 331
 332         wxASSERT_MSG( !GetChildren().Find(child),
 333                       wxT("child didn't remove itself using RemoveChild()") );
 334     }
 335
 336     return TRUE;
 337 }
 338
 339 // ----------------------------------------------------------------------------
 340 // size/position related methods
 341 // ----------------------------------------------------------------------------
 342
 343 // centre the window with respect to its parent in either (or both) directions
 344 void wxWindowBase::Centre(int direction)
 345 {
 346     // the position/size of the parent window or of the entire screen
 347     wxPoint posParent;
 348     int widthParent, heightParent;
 349
 350     wxWindow *parent = NULL;
 351
 352     if ( !(direction & wxCENTRE_ON_SCREEN) )
 353     {
 354         // find the parent to centre this window on: it should be the
 355         // immediate parent for the controls but the top level parent for the
 356         // top level windows (like dialogs)
 357         parent = GetParent();
 358         if ( IsTopLevel() )
 359         {
 360             while ( parent && !parent->IsTopLevel() )
 361             {
 362                 parent = parent->GetParent();
 363             }
 364         }
 365
 366         // did we find the parent?
 367         if ( !parent )
 368         {
 369             // no other choice
 370             direction |= wxCENTRE_ON_SCREEN;
 371         }
 372     }
 373
 374     if ( direction & wxCENTRE_ON_SCREEN )
 375     {
 376         // centre with respect to the whole screen
 377         wxDisplaySize(&widthParent, &heightParent);
 378     }
 379     else
 380     {
 381         if ( IsTopLevel() )
 382         {
 383             // centre on the parent
 384             parent->GetSize(&widthParent, &heightParent);
 385
 386             // adjust to the parents position
 387             posParent = parent->GetPosition();
 388         }
 389         else
 390         {
 391             // centre inside the parents client rectangle
 392             parent->GetClientSize(&widthParent, &heightParent);
 393         }
 394     }
 395
 396     int width, height;
 397     GetSize(&width, &height);
 398
 399     int xNew = -1,
 400         yNew = -1;
 401
 402     if ( direction & wxHORIZONTAL )
 403         xNew = (widthParent - width)/2;
 404
 405     if ( direction & wxVERTICAL )
 406         yNew = (heightParent - height)/2;
 407
 408     xNew += posParent.x;
 409     yNew += posParent.y;
 410
 411     // Base size of the visible dimensions of the display
 412     // to take into account the taskbar
 413     wxRect rect = wxGetClientDisplayRect();
 414     wxSize size (rect.width,rect.height);
 415
 416     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 417     //     but it may mean that the window is placed on other than the main
 418     //     display. Therefore we only make sure centered window is on the main display
 419     //     if the parent is at least partially present here.
 420     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 421     {
 422         if (xNew < 0)
 423             xNew = 0;
 424         else if (xNew+width > size.x)
 425             xNew = size.x-width-1;
 426     }
 427     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 428     {
 429         if (yNew+height > size.y)
 430             yNew = size.y-height-1;
 431
 432         // Make certain that the title bar is initially visible
 433         // always, even if this would push the bottom of the
 434         // dialog of the visible area of the display
 435         if (yNew < 0)
 436             yNew = 0;
 437     }
 438
 439     // move the window to this position (keeping the old size but using
 440     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 441     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 442 }
 443
 444 // fits the window around the children
 445 void wxWindowBase::Fit()
 446 {
 447     if ( GetChildren().GetCount() > 0 )
 448     {
 449         wxSize size = DoGetBestSize();
 450
 451         // for compatibility with the old versions and because it really looks
 452         // slightly more pretty like this, add a pad
 453         size.x += 7;
 454         size.y += 14;
 455
 456         SetClientSize(size);
 457     }
 458     //else: do nothing if we have no children
 459 }
 460
 461 // return the size best suited for the current window
 462 wxSize wxWindowBase::DoGetBestSize() const
 463 {
 464     if ( GetChildren().GetCount() > 0 )
 465     {
 466         // our minimal acceptable size is such that all our windows fit inside
 467         int maxX = 0,
 468             maxY = 0;
 469
 470         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 471               node;
 472               node = node->GetNext() )
 473         {
 474             wxWindow *win = node->GetData();
 475             if ( win->IsTopLevel()
 476 #if wxUSE_STATUSBAR
 477                     || wxDynamicCast(win, wxStatusBar)
 478 #endif // wxUSE_STATUSBAR
 479                )
 480             {
 481                 // dialogs and frames lie in different top level windows -
 482                 // don't deal with them here; as for the status bars, they
 483                 // don't lie in the client area at all
 484                 continue;
 485             }
 486
 487             int wx, wy, ww, wh;
 488             win->GetPosition(&wx, &wy);
 489
 490             // if the window hadn't been positioned yet, assume that it is in
 491             // the origin
 492             if ( wx == -1 )
 493                 wx = 0;
 494             if ( wy == -1 )
 495                 wy = 0;
 496
 497             win->GetSize(&ww, &wh);
 498             if ( wx + ww > maxX )
 499                 maxX = wx + ww;
 500             if ( wy + wh > maxY )
 501                 maxY = wy + wh;
 502         }
 503
 504         return wxSize(maxX, maxY);
 505     }
 506     else
 507     {
 508         // for a generic window there is no natural best size - just use the
 509         // current one
 510         return GetSize();
 511     }
 512 }
 513
 514 // by default the origin is not shifted
 515 wxPoint wxWindowBase::GetClientAreaOrigin() const
 516 {
 517     return wxPoint(0, 0);
 518 }
 519
 520 // set the min/max size of the window
 521 void wxWindowBase::SetSizeHints(int minW, int minH,
 522                                 int maxW, int maxH,
 523                                 int WXUNUSED(incW), int WXUNUSED(incH))
 524 {
 525     m_minWidth = minW;
 526     m_maxWidth = maxW;
 527     m_minHeight = minH;
 528     m_maxHeight = maxH;
 529 }
 530
 531 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 532                                         int maxW, int maxH )
 533 {
 534     m_minVirtualWidth = minW;
 535     m_maxVirtualWidth = maxW;
 536     m_minVirtualHeight = minH;
 537     m_maxVirtualHeight = maxH;
 538
 539     SetVirtualSize( GetClientSize() );
 540 }
 541
 542 void wxWindowBase::DoSetVirtualSize( int x, int y )
 543 {
 544     if( m_minVirtualWidth != -1 && m_minVirtualWidth > x )   x = m_minVirtualWidth;
 545     if( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )   x = m_maxVirtualWidth;
 546     if( m_minVirtualHeight != -1 && m_minVirtualHeight > y ) y = m_minVirtualHeight;
 547     if( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y ) y = m_maxVirtualHeight;
 548
 549     m_virtualSize.SetWidth( x );
 550     m_virtualSize.SetHeight( y );
 551 }
 552
 553 wxSize wxWindowBase::DoGetVirtualSize() const
 554 {
 555     wxSize  s( GetClientSize() );
 556
 557     if( m_virtualSize.GetWidth() != -1 )
 558         s.SetWidth( m_virtualSize.GetWidth() );
 559     if( m_virtualSize.GetHeight() != -1 )
 560         s.SetHeight( m_virtualSize.GetHeight() );
 561
 562     return s;
 563 }
 564
 565 // ----------------------------------------------------------------------------
 566 // show/hide/enable/disable the window
 567 // ----------------------------------------------------------------------------
 568
 569 bool wxWindowBase::Show(bool show)
 570 {
 571     if ( show != m_isShown )
 572     {
 573         m_isShown = show;
 574
 575         return TRUE;
 576     }
 577     else
 578     {
 579         return FALSE;
 580     }
 581 }
 582
 583 bool wxWindowBase::Enable(bool enable)
 584 {
 585     if ( enable != m_isEnabled )
 586     {
 587         m_isEnabled = enable;
 588
 589         return TRUE;
 590     }
 591     else
 592     {
 593         return FALSE;
 594     }
 595 }
 596 // ----------------------------------------------------------------------------
 597 // RTTI
 598 // ----------------------------------------------------------------------------
 599
 600 bool wxWindowBase::IsTopLevel() const
 601 {
 602     return FALSE;
 603 }
 604
 605 // ----------------------------------------------------------------------------
 606 // reparenting the window
 607 // ----------------------------------------------------------------------------
 608
 609 void wxWindowBase::AddChild(wxWindowBase *child)
 610 {
 611     wxCHECK_RET( child, wxT("can't add a NULL child") );
 612
 613     // this should never happen and it will lead to a crash later if it does
 614     // because RemoveChild() will remove only one node from the children list
 615     // and the other(s) one(s) will be left with dangling pointers in them
 616     wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
 617
 618     GetChildren().Append(child);
 619     child->SetParent(this);
 620 }
 621
 622 void wxWindowBase::RemoveChild(wxWindowBase *child)
 623 {
 624     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 625
 626     GetChildren().DeleteObject(child);
 627     child->SetParent((wxWindow *)NULL);
 628 }
 629
 630 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 631 {
 632     wxWindow *oldParent = GetParent();
 633     if ( newParent == oldParent )
 634     {
 635         // nothing done
 636         return FALSE;
 637     }
 638
 639     // unlink this window from the existing parent.
 640     if ( oldParent )
 641     {
 642         oldParent->RemoveChild(this);
 643     }
 644     else
 645     {
 646         wxTopLevelWindows.DeleteObject(this);
 647     }
 648
 649     // add it to the new one
 650     if ( newParent )
 651     {
 652         newParent->AddChild(this);
 653     }
 654     else
 655     {
 656         wxTopLevelWindows.Append(this);
 657     }
 658
 659     return TRUE;
 660 }
 661
 662 // ----------------------------------------------------------------------------
 663 // event handler stuff
 664 // ----------------------------------------------------------------------------
 665
 666 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 667 {
 668     handler->SetNextHandler(GetEventHandler());
 669     SetEventHandler(handler);
 670 }
 671
 672 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 673 {
 674     wxEvtHandler *handlerA = GetEventHandler();
 675     if ( handlerA )
 676     {
 677         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 678         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 679         SetEventHandler(handlerB);
 680         if ( deleteHandler )
 681         {
 682             delete handlerA;
 683             handlerA = (wxEvtHandler *)NULL;
 684         }
 685     }
 686
 687     return handlerA;
 688 }
 689
 690 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 691 {
 692     wxCHECK_MSG( handler, FALSE, _T("RemoveEventHandler(NULL) called") );
 693
 694     wxEvtHandler *handlerPrev = NULL,
 695                  *handlerCur = GetEventHandler();
 696     while ( handlerCur )
 697     {
 698         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 699
 700         if ( handlerCur == handler )
 701         {
 702             if ( handlerPrev )
 703             {
 704                 handlerPrev->SetNextHandler(handlerNext);
 705             }
 706             else
 707             {
 708                 SetEventHandler(handlerNext);
 709             }
 710
 711             handler->SetNextHandler(NULL);
 712
 713             return TRUE;
 714         }
 715
 716         handlerPrev = handlerCur;
 717         handlerCur = handlerNext;
 718     }
 719
 720     wxFAIL_MSG( _T("where has the event handler gone?") );
 721
 722     return FALSE;
 723 }
 724
 725 // ----------------------------------------------------------------------------
 726 // cursors, fonts &c
 727 // ----------------------------------------------------------------------------
 728
 729 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 730 {
 731     if ( !colour.Ok() || (colour == m_backgroundColour) )
 732         return FALSE;
 733
 734     m_backgroundColour = colour;
 735
 736     m_hasBgCol = TRUE;
 737
 738     return TRUE;
 739 }
 740
 741 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 742 {
 743     if ( !colour.Ok() || (colour == m_foregroundColour) )
 744         return FALSE;
 745
 746     m_foregroundColour = colour;
 747
 748     m_hasFgCol = TRUE;
 749
 750     return TRUE;
 751 }
 752
 753 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 754 {
 755     // setting an invalid cursor is ok, it means that we don't have any special
 756     // cursor
 757     if ( m_cursor == cursor )
 758     {
 759         // no change
 760         return FALSE;
 761     }
 762
 763     m_cursor = cursor;
 764
 765     return TRUE;
 766 }
 767
 768 bool wxWindowBase::SetFont(const wxFont& font)
 769 {
 770     // don't try to set invalid font, always fall back to the default
 771     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 772
 773     if ( fontOk == m_font )
 774     {
 775         // no change
 776         return FALSE;
 777     }
 778
 779     m_font = fontOk;
 780
 781     m_hasFont = TRUE;
 782
 783     return TRUE;
 784 }
 785
 786 #if wxUSE_PALETTE
 787
 788 void wxWindowBase::SetPalette(const wxPalette& pal)
 789 {
 790     m_hasCustomPalette = TRUE;
 791     m_palette = pal;
 792
 793     // VZ: can anyone explain me what do we do here?
 794     wxWindowDC d((wxWindow *) this);
 795     d.SetPalette(pal);
 796 }
 797
 798 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
 799 {
 800     wxWindow *win = (wxWindow *)this;
 801     while ( win && !win->HasCustomPalette() )
 802     {
 803         win = win->GetParent();
 804     }
 805
 806     return win;
 807 }
 808
 809 #endif // wxUSE_PALETTE
 810
 811 #if wxUSE_CARET
 812 void wxWindowBase::SetCaret(wxCaret *caret)
 813 {
 814     if ( m_caret )
 815     {
 816         delete m_caret;
 817     }
 818
 819     m_caret = caret;
 820
 821     if ( m_caret )
 822     {
 823         wxASSERT_MSG( m_caret->GetWindow() == this,
 824                       wxT("caret should be created associated to this window") );
 825     }
 826 }
 827 #endif // wxUSE_CARET
 828
 829 #if wxUSE_VALIDATORS
 830 // ----------------------------------------------------------------------------
 831 // validators
 832 // ----------------------------------------------------------------------------
 833
 834 void wxWindowBase::SetValidator(const wxValidator& validator)
 835 {
 836     if ( m_windowValidator )
 837         delete m_windowValidator;
 838
 839     m_windowValidator = (wxValidator *)validator.Clone();
 840
 841     if ( m_windowValidator )
 842         m_windowValidator->SetWindow(this) ;
 843 }
 844 #endif // wxUSE_VALIDATORS
 845
 846 // ----------------------------------------------------------------------------
 847 // update region stuff
 848 // ----------------------------------------------------------------------------
 849
 850 wxRect wxWindowBase::GetUpdateClientRect() const
 851 {
 852     wxRegion rgnUpdate = GetUpdateRegion();
 853     rgnUpdate.Intersect(GetClientRect());
 854     wxRect rectUpdate = rgnUpdate.GetBox();
 855     wxPoint ptOrigin = GetClientAreaOrigin();
 856     rectUpdate.x -= ptOrigin.x;
 857     rectUpdate.y -= ptOrigin.y;
 858
 859     return rectUpdate;
 860 }
 861
 862 bool wxWindowBase::IsExposed(int x, int y) const
 863 {
 864     return m_updateRegion.Contains(x, y) != wxOutRegion;
 865 }
 866
 867 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
 868 {
 869     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
 870 }
 871
 872 // ----------------------------------------------------------------------------
 873 // find window by id or name
 874 // ----------------------------------------------------------------------------
 875
 876 wxWindow *wxWindowBase::FindWindow( long id )
 877 {
 878     if ( id == m_windowId )
 879         return (wxWindow *)this;
 880
 881     wxWindowBase *res = (wxWindow *)NULL;
 882     wxWindowList::Node *node;
 883     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 884     {
 885         wxWindowBase *child = node->GetData();
 886         res = child->FindWindow( id );
 887     }
 888
 889     return (wxWindow *)res;
 890 }
 891
 892 wxWindow *wxWindowBase::FindWindow( const wxString& name )
 893 {
 894     if ( name == m_windowName )
 895         return (wxWindow *)this;
 896
 897     wxWindowBase *res = (wxWindow *)NULL;
 898     wxWindowList::Node *node;
 899     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 900     {
 901         wxWindow *child = node->GetData();
 902         res = child->FindWindow(name);
 903     }
 904
 905     return (wxWindow *)res;
 906 }
 907
 908 // ----------------------------------------------------------------------------
 909 // dialog oriented functions
 910 // ----------------------------------------------------------------------------
 911
 912 void wxWindowBase::MakeModal(bool modal)
 913 {
 914     // Disable all other windows
 915     if ( IsTopLevel() )
 916     {
 917         wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 918         while (node)
 919         {
 920             wxWindow *win = node->GetData();
 921             if (win != this)
 922                 win->Enable(!modal);
 923
 924             node = node->GetNext();
 925         }
 926     }
 927 }
 928
 929 bool wxWindowBase::Validate()
 930 {
 931 #if wxUSE_VALIDATORS
 932     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 933
 934     wxWindowList::Node *node;
 935     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 936     {
 937         wxWindowBase *child = node->GetData();
 938         wxValidator *validator = child->GetValidator();
 939         if ( validator && !validator->Validate((wxWindow *)this) )
 940         {
 941             return FALSE;
 942         }
 943
 944         if ( recurse && !child->Validate() )
 945         {
 946             return FALSE;
 947         }
 948     }
 949 #endif // wxUSE_VALIDATORS
 950
 951     return TRUE;
 952 }
 953
 954 bool wxWindowBase::TransferDataToWindow()
 955 {
 956 #if wxUSE_VALIDATORS
 957     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 958
 959     wxWindowList::Node *node;
 960     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 961     {
 962         wxWindowBase *child = node->GetData();
 963         wxValidator *validator = child->GetValidator();
 964         if ( validator && !validator->TransferToWindow() )
 965         {
 966             wxLogWarning(_("Could not transfer data to window"));
 967             wxLog::FlushActive();
 968
 969             return FALSE;
 970         }
 971
 972         if ( recurse )
 973         {
 974             if ( !child->TransferDataToWindow() )
 975             {
 976                 // warning already given
 977                 return FALSE;
 978             }
 979         }
 980     }
 981 #endif // wxUSE_VALIDATORS
 982
 983     return TRUE;
 984 }
 985
 986 bool wxWindowBase::TransferDataFromWindow()
 987 {
 988 #if wxUSE_VALIDATORS
 989     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 990
 991     wxWindowList::Node *node;
 992     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 993     {
 994         wxWindow *child = node->GetData();
 995         wxValidator *validator = child->GetValidator();
 996         if ( validator && !validator->TransferFromWindow() )
 997         {
 998             // nop warning here because the application is supposed to give
 999             // one itself - we don't know here what might have gone wrongly
1000
1001             return FALSE;
1002         }
1003
1004         if ( recurse )
1005         {
1006             if ( !child->TransferDataFromWindow() )
1007             {
1008                 // warning already given
1009                 return FALSE;
1010             }
1011         }
1012     }
1013 #endif // wxUSE_VALIDATORS
1014
1015     return TRUE;
1016 }
1017
1018 void wxWindowBase::InitDialog()
1019 {
1020     wxInitDialogEvent event(GetId());
1021     event.SetEventObject( this );
1022     GetEventHandler()->ProcessEvent(event);
1023 }
1024
1025 // ----------------------------------------------------------------------------
1026 // context-sensitive help support
1027 // ----------------------------------------------------------------------------
1028
1029 #if wxUSE_HELP
1030
1031 // associate this help text with this window
1032 void wxWindowBase::SetHelpText(const wxString& text)
1033 {
1034     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1035     if ( helpProvider )
1036     {
1037         helpProvider->AddHelp(this, text);
1038     }
1039 }
1040
1041 // associate this help text with all windows with the same id as this
1042 // one
1043 void wxWindowBase::SetHelpTextForId(const wxString& text)
1044 {
1045     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1046     if ( helpProvider )
1047     {
1048         helpProvider->AddHelp(GetId(), text);
1049     }
1050 }
1051
1052 // get the help string associated with this window (may be empty)
1053 wxString wxWindowBase::GetHelpText() const
1054 {
1055     wxString text;
1056     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1057     if ( helpProvider )
1058     {
1059         text = helpProvider->GetHelp(this);
1060     }
1061
1062     return text;
1063 }
1064
1065 // show help for this window
1066 void wxWindowBase::OnHelp(wxHelpEvent& event)
1067 {
1068     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1069     if ( helpProvider )
1070     {
1071         if ( helpProvider->ShowHelp(this) )
1072         {
1073             // skip the event.Skip() below
1074             return;
1075         }
1076     }
1077
1078     event.Skip();
1079 }
1080
1081 #endif // wxUSE_HELP
1082
1083 // ----------------------------------------------------------------------------
1084 // tooltipsroot.Replace("\\", "/");
1085 // ----------------------------------------------------------------------------
1086
1087 #if wxUSE_TOOLTIPS
1088
1089 void wxWindowBase::SetToolTip( const wxString &tip )
1090 {
1091     // don't create the new tooltip if we already have one
1092     if ( m_tooltip )
1093     {
1094         m_tooltip->SetTip( tip );
1095     }
1096     else
1097     {
1098         SetToolTip( new wxToolTip( tip ) );
1099     }
1100
1101     // setting empty tooltip text does not remove the tooltip any more - use
1102     // SetToolTip((wxToolTip *)NULL) for this
1103 }
1104
1105 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1106 {
1107     if ( m_tooltip )
1108         delete m_tooltip;
1109
1110     m_tooltip = tooltip;
1111 }
1112
1113 #endif // wxUSE_TOOLTIPS
1114
1115 // ----------------------------------------------------------------------------
1116 // constraints and sizers
1117 // ----------------------------------------------------------------------------
1118
1119 #if wxUSE_CONSTRAINTS
1120
1121 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1122 {
1123     if ( m_constraints )
1124     {
1125         UnsetConstraints(m_constraints);
1126         delete m_constraints;
1127     }
1128     m_constraints = constraints;
1129     if ( m_constraints )
1130     {
1131         // Make sure other windows know they're part of a 'meaningful relationship'
1132         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1133             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1134         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1135             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1136         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1137             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1138         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1139             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1140         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1141             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1142         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1143             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1144         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1145             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1146         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1147             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1148     }
1149 }
1150
1151 // This removes any dangling pointers to this window in other windows'
1152 // constraintsInvolvedIn lists.
1153 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1154 {
1155     if ( c )
1156     {
1157         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1158             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1159         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1160             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1161         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1162             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1163         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1164             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1165         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1166             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1167         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1168             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1169         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1170             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1171         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1172             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1173     }
1174 }
1175
1176 // Back-pointer to other windows we're involved with, so if we delete this
1177 // window, we must delete any constraints we're involved with.
1178 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1179 {
1180     if ( !m_constraintsInvolvedIn )
1181         m_constraintsInvolvedIn = new wxWindowList;
1182     if ( !m_constraintsInvolvedIn->Find(otherWin) )
1183         m_constraintsInvolvedIn->Append(otherWin);
1184 }
1185
1186 // REMOVE back-pointer to other windows we're involved with.
1187 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1188 {
1189     if ( m_constraintsInvolvedIn )
1190         m_constraintsInvolvedIn->DeleteObject(otherWin);
1191 }
1192
1193 // Reset any constraints that mention this window
1194 void wxWindowBase::DeleteRelatedConstraints()
1195 {
1196     if ( m_constraintsInvolvedIn )
1197     {
1198         wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
1199         while (node)
1200         {
1201             wxWindow *win = node->GetData();
1202             wxLayoutConstraints *constr = win->GetConstraints();
1203
1204             // Reset any constraints involving this window
1205             if ( constr )
1206             {
1207                 constr->left.ResetIfWin(this);
1208                 constr->top.ResetIfWin(this);
1209                 constr->right.ResetIfWin(this);
1210                 constr->bottom.ResetIfWin(this);
1211                 constr->width.ResetIfWin(this);
1212                 constr->height.ResetIfWin(this);
1213                 constr->centreX.ResetIfWin(this);
1214                 constr->centreY.ResetIfWin(this);
1215             }
1216
1217             wxWindowList::Node *next = node->GetNext();
1218             delete node;
1219             node = next;
1220         }
1221
1222         delete m_constraintsInvolvedIn;
1223         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1224     }
1225 }
1226 #endif
1227
1228 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1229 {
1230     if (m_windowSizer && deleteOld) delete m_windowSizer;
1231
1232     m_windowSizer = sizer;
1233
1234     SetAutoLayout( sizer != 0 );
1235 }
1236
1237 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1238 {
1239     SetSizer( sizer, deleteOld );
1240     sizer->SetSizeHints( (wxWindow*) this );
1241 }
1242
1243 bool wxWindowBase::Layout()
1244 {
1245     // If there is a sizer, use it instead of the constraints
1246     if ( GetSizer() )
1247     {
1248         int w, h;
1249         GetVirtualSize(&w, &h);
1250         GetSizer()->SetDimension( 0, 0, w, h );
1251     }
1252 #if wxUSE_CONSTRAINTS
1253     else
1254     {
1255         wxLayoutConstraints *constr = GetConstraints();
1256         bool wasOk = constr && constr->AreSatisfied();
1257
1258         ResetConstraints();   // Mark all constraints as unevaluated
1259
1260         // if we're a top level panel (i.e. our parent is frame/dialog), our
1261         // own constraints will never be satisfied any more unless we do it
1262         // here
1263         if ( wasOk )
1264         {
1265             int noChanges = 1;
1266             while ( noChanges > 0 )
1267             {
1268                 constr->SatisfyConstraints(this, &noChanges);
1269             }
1270         }
1271
1272         DoPhase(1);           // Layout children
1273         DoPhase(2);           // Layout grand children
1274         SetConstraintSizes(); // Recursively set the real window sizes
1275     }
1276 #endif
1277
1278     return TRUE;
1279 }
1280
1281 #if wxUSE_CONSTRAINTS
1282 // Do a phase of evaluating constraints: the default behaviour. wxSizers may
1283 // do a similar thing, but also impose their own 'constraints' and order the
1284 // evaluation differently.
1285 bool wxWindowBase::LayoutPhase1(int *noChanges)
1286 {
1287     wxLayoutConstraints *constr = GetConstraints();
1288     if ( constr )
1289     {
1290         return constr->SatisfyConstraints(this, noChanges);
1291     }
1292     else
1293         return TRUE;
1294 }
1295
1296 bool wxWindowBase::LayoutPhase2(int *noChanges)
1297 {
1298     *noChanges = 0;
1299
1300     // Layout children
1301     DoPhase(1);
1302     DoPhase(2);
1303     return TRUE;
1304 }
1305
1306 // Do a phase of evaluating child constraints
1307 bool wxWindowBase::DoPhase(int phase)
1308 {
1309     int noIterations = 0;
1310     int maxIterations = 500;
1311     int noChanges = 1;
1312     int noFailures = 0;
1313     wxWindowList succeeded;
1314     while ((noChanges > 0) && (noIterations < maxIterations))
1315     {
1316         noChanges = 0;
1317         noFailures = 0;
1318         wxWindowList::Node *node = GetChildren().GetFirst();
1319         while (node)
1320         {
1321             wxWindow *child = node->GetData();
1322             if ( !child->IsTopLevel() )
1323             {
1324                 wxLayoutConstraints *constr = child->GetConstraints();
1325                 if ( constr )
1326                 {
1327                     if ( !succeeded.Find(child) )
1328                     {
1329                         int tempNoChanges = 0;
1330                         bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
1331                         noChanges += tempNoChanges;
1332                         if ( success )
1333                         {
1334                             succeeded.Append(child);
1335                         }
1336                     }
1337                 }
1338             }
1339             node = node->GetNext();
1340         }
1341
1342         noIterations++;
1343     }
1344
1345     return TRUE;
1346 }
1347
1348 void wxWindowBase::ResetConstraints()
1349 {
1350     wxLayoutConstraints *constr = GetConstraints();
1351     if ( constr )
1352     {
1353         constr->left.SetDone(FALSE);
1354         constr->top.SetDone(FALSE);
1355         constr->right.SetDone(FALSE);
1356         constr->bottom.SetDone(FALSE);
1357         constr->width.SetDone(FALSE);
1358         constr->height.SetDone(FALSE);
1359         constr->centreX.SetDone(FALSE);
1360         constr->centreY.SetDone(FALSE);
1361     }
1362
1363     wxWindowList::Node *node = GetChildren().GetFirst();
1364     while (node)
1365     {
1366         wxWindow *win = node->GetData();
1367         if ( !win->IsTopLevel() )
1368             win->ResetConstraints();
1369         node = node->GetNext();
1370     }
1371 }
1372
1373 // Need to distinguish between setting the 'fake' size for windows and sizers,
1374 // and setting the real values.
1375 void wxWindowBase::SetConstraintSizes(bool recurse)
1376 {
1377     wxLayoutConstraints *constr = GetConstraints();
1378     if ( constr && constr->AreSatisfied() )
1379     {
1380         int x = constr->left.GetValue();
1381         int y = constr->top.GetValue();
1382         int w = constr->width.GetValue();
1383         int h = constr->height.GetValue();
1384
1385         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1386              (constr->height.GetRelationship() != wxAsIs) )
1387         {
1388             SetSize(x, y, w, h);
1389         }
1390         else
1391         {
1392             // If we don't want to resize this window, just move it...
1393             Move(x, y);
1394         }
1395     }
1396     else if ( constr )
1397     {
1398         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1399                    GetClassInfo()->GetClassName(),
1400                    GetName().c_str());
1401     }
1402
1403     if ( recurse )
1404     {
1405         wxWindowList::Node *node = GetChildren().GetFirst();
1406         while (node)
1407         {
1408             wxWindow *win = node->GetData();
1409             if ( !win->IsTopLevel() && win->GetConstraints() )
1410                 win->SetConstraintSizes();
1411             node = node->GetNext();
1412         }
1413     }
1414 }
1415
1416 // Only set the size/position of the constraint (if any)
1417 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1418 {
1419     wxLayoutConstraints *constr = GetConstraints();
1420     if ( constr )
1421     {
1422         if ( x != -1 )
1423         {
1424             constr->left.SetValue(x);
1425             constr->left.SetDone(TRUE);
1426         }
1427         if ( y != -1 )
1428         {
1429             constr->top.SetValue(y);
1430             constr->top.SetDone(TRUE);
1431         }
1432         if ( w != -1 )
1433         {
1434             constr->width.SetValue(w);
1435             constr->width.SetDone(TRUE);
1436         }
1437         if ( h != -1 )
1438         {
1439             constr->height.SetValue(h);
1440             constr->height.SetDone(TRUE);
1441         }
1442     }
1443 }
1444
1445 void wxWindowBase::MoveConstraint(int x, int y)
1446 {
1447     wxLayoutConstraints *constr = GetConstraints();
1448     if ( constr )
1449     {
1450         if ( x != -1 )
1451         {
1452             constr->left.SetValue(x);
1453             constr->left.SetDone(TRUE);
1454         }
1455         if ( y != -1 )
1456         {
1457             constr->top.SetValue(y);
1458             constr->top.SetDone(TRUE);
1459         }
1460     }
1461 }
1462
1463 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1464 {
1465     wxLayoutConstraints *constr = GetConstraints();
1466     if ( constr )
1467     {
1468         *w = constr->width.GetValue();
1469         *h = constr->height.GetValue();
1470     }
1471     else
1472         GetSize(w, h);
1473 }
1474
1475 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1476 {
1477     wxLayoutConstraints *constr = GetConstraints();
1478     if ( constr )
1479     {
1480         *w = constr->width.GetValue();
1481         *h = constr->height.GetValue();
1482     }
1483     else
1484         GetClientSize(w, h);
1485 }
1486
1487 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1488 {
1489     wxLayoutConstraints *constr = GetConstraints();
1490     if ( constr )
1491     {
1492         *x = constr->left.GetValue();
1493         *y = constr->top.GetValue();
1494     }
1495     else
1496         GetPosition(x, y);
1497 }
1498
1499 #endif // wxUSE_CONSTRAINTS
1500
1501 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1502 {
1503     // don't do it for the dialogs/frames - they float independently of their
1504     // parent
1505     if ( !IsTopLevel() )
1506     {
1507         wxWindow *parent = GetParent();
1508         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1509         {
1510             wxPoint pt(parent->GetClientAreaOrigin());
1511             x += pt.x;
1512             y += pt.y;
1513         }
1514     }
1515 }
1516
1517 // ----------------------------------------------------------------------------
1518 // do Update UI processing for child controls
1519 // ----------------------------------------------------------------------------
1520
1521 // TODO: should this be implemented for the child window rather
1522 // than the parent? Then you can override it e.g. for wxCheckBox
1523 // to do the Right Thing rather than having to assume a fixed number
1524 // of control classes.
1525 void wxWindowBase::UpdateWindowUI()
1526 {
1527 #if wxUSE_CONTROLS
1528     wxUpdateUIEvent event(GetId());
1529     event.m_eventObject = this;
1530
1531     if ( GetEventHandler()->ProcessEvent(event) )
1532     {
1533         if ( event.GetSetEnabled() )
1534             Enable(event.GetEnabled());
1535
1536         if ( event.GetSetText() )
1537         {
1538             wxControl *control = wxDynamicCastThis(wxControl);
1539             if ( control )
1540             {
1541 #if wxUSE_TEXTCTRL
1542                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
1543                 if ( text )
1544                     text->SetValue(event.GetText());
1545                 else
1546 #endif // wxUSE_TEXTCTRL
1547                     control->SetLabel(event.GetText());
1548             }
1549         }
1550
1551 #if wxUSE_CHECKBOX
1552         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1553         if ( checkbox )
1554         {
1555             if ( event.GetSetChecked() )
1556                 checkbox->SetValue(event.GetChecked());
1557         }
1558 #endif // wxUSE_CHECKBOX
1559
1560 #if wxUSE_RADIOBTN
1561         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1562         if ( radiobtn )
1563         {
1564             if ( event.GetSetChecked() )
1565                 radiobtn->SetValue(event.GetChecked());
1566         }
1567 #endif // wxUSE_RADIOBTN
1568     }
1569 #endif // wxUSE_CONTROLS
1570 }
1571
1572 // ----------------------------------------------------------------------------
1573 // dialog units translations
1574 // ----------------------------------------------------------------------------
1575
1576 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1577 {
1578     int charWidth = GetCharWidth();
1579     int charHeight = GetCharHeight();
1580     wxPoint pt2(-1, -1);
1581     if (pt.x != -1)
1582         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1583     if (pt.y != -1)
1584         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1585
1586     return pt2;
1587 }
1588
1589 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1590 {
1591     int charWidth = GetCharWidth();
1592     int charHeight = GetCharHeight();
1593     wxPoint pt2(-1, -1);
1594     if (pt.x != -1)
1595         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1596     if (pt.y != -1)
1597         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1598
1599     return pt2;
1600 }
1601
1602 // ----------------------------------------------------------------------------
1603 // event handlers
1604 // ----------------------------------------------------------------------------
1605
1606 // propagate the colour change event to the subwindows
1607 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1608 {
1609     wxWindowList::Node *node = GetChildren().GetFirst();
1610     while ( node )
1611     {
1612         // Only propagate to non-top-level windows
1613         wxWindow *win = node->GetData();
1614         if ( !win->IsTopLevel() )
1615         {
1616             wxSysColourChangedEvent event2;
1617             event.m_eventObject = win;
1618             win->GetEventHandler()->ProcessEvent(event2);
1619         }
1620
1621         node = node->GetNext();
1622     }
1623 }
1624
1625 // the default action is to populate dialog with data when it's created
1626 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1627 {
1628     TransferDataToWindow();
1629 }
1630
1631 // process Ctrl-Alt-mclick
1632 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1633 {
1634 #if wxUSE_MSGDLG
1635     if ( event.ControlDown() && event.AltDown() )
1636     {
1637         // don't translate these strings
1638         wxString port;
1639
1640 #ifdef __WXUNIVERSAL__
1641         port = _T("Univ/");
1642 #endif // __WXUNIVERSAL__
1643
1644         switch ( wxGetOsVersion() )
1645         {
1646             case wxMOTIF_X:     port = _T("Motif"); break;
1647             case wxMAC:
1648             case wxMAC_DARWIN:  port = _T("Mac"); break;
1649             case wxBEOS:        port = _T("BeOS"); break;
1650             case wxGTK:
1651             case wxGTK_WIN32:
1652             case wxGTK_OS2:
1653             case wxGTK_BEOS:    port = _T("GTK"); break;
1654             case wxWINDOWS:
1655             case wxPENWINDOWS:
1656             case wxWINDOWS_NT:
1657             case wxWIN32S:
1658             case wxWIN95:
1659             case wxWIN386:      port = _T("MS Windows"); break;
1660             case wxMGL_UNIX:
1661             case wxMGL_X:
1662             case wxMGL_WIN32:
1663             case wxMGL_OS2:     port = _T("MGL"); break;
1664             case wxWINDOWS_OS2:
1665             case wxOS2_PM:      port = _T("OS/2"); break;
1666             default:            port = _T("unknown"); break;
1667         }
1668
1669         wxMessageBox(wxString::Format(
1670                                       _T(
1671                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
1672                                         ),
1673                                       port.c_str(),
1674                                       wxMAJOR_VERSION,
1675                                       wxMINOR_VERSION,
1676                                       wxRELEASE_NUMBER,
1677 #if wxUSE_UNICODE
1678                                       L" (Unicode)",
1679 #else
1680                                       "",
1681 #endif
1682                                       __TDATE__,
1683                                       __TTIME__
1684                                      ),
1685                      _T("wxWindows information"),
1686                      wxICON_INFORMATION | wxOK,
1687                      (wxWindow *)this);
1688     }
1689     else
1690 #endif // wxUSE_MSGDLG
1691     {
1692         event.Skip();
1693     }
1694 }
1695
1696 // ----------------------------------------------------------------------------
1697 // list classes implementation
1698 // ----------------------------------------------------------------------------
1699
1700 void wxWindowListNode::DeleteData()
1701 {
1702     delete (wxWindow *)GetData();
1703 }
1704
1705 // ----------------------------------------------------------------------------
1706 // borders
1707 // ----------------------------------------------------------------------------
1708
1709 wxBorder wxWindowBase::GetBorder() const
1710 {
1711     wxBorder border = (wxBorder)(m_windowStyle & wxBORDER_MASK);
1712     if ( border == wxBORDER_DEFAULT )
1713     {
1714         border = GetDefaultBorder();
1715     }
1716
1717     return border;
1718 }
1719
1720 wxBorder wxWindowBase::GetDefaultBorder() const
1721 {
1722     return wxBORDER_NONE;
1723 }
1724
1725 // ----------------------------------------------------------------------------
1726 // hit testing
1727 // ----------------------------------------------------------------------------
1728
1729 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
1730 {
1731     // here we just check if the point is inside the window or not
1732
1733     // check the top and left border first
1734     bool outside = x < 0 || y < 0;
1735     if ( !outside )
1736     {
1737         // check the right and bottom borders too
1738         wxSize size = GetSize();
1739         outside = x >= size.x || y >= size.y;
1740     }
1741
1742     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
1743 }
1744
1745 // ----------------------------------------------------------------------------
1746 // mouse capture
1747 // ----------------------------------------------------------------------------
1748
1749 struct WXDLLEXPORT wxWindowNext
1750 {
1751     wxWindow *win;
1752     wxWindowNext *next;
1753 } *wxWindowBase::ms_winCaptureNext = NULL;
1754
1755 void wxWindowBase::CaptureMouse()
1756 {
1757     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
1758
1759     wxWindow *winOld = GetCapture();
1760     if ( winOld )
1761     {
1762         ((wxWindowBase*) winOld)->DoReleaseMouse();
1763
1764         // save it on stack
1765         wxWindowNext *item = new wxWindowNext;
1766         item->win = winOld;
1767         item->next = ms_winCaptureNext;
1768         ms_winCaptureNext = item;
1769     }
1770     //else: no mouse capture to save
1771
1772     DoCaptureMouse();
1773 }
1774
1775 void wxWindowBase::ReleaseMouse()
1776 {
1777     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(0x%08x)"), this);
1778
1779     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") )
1780
1781     DoReleaseMouse();
1782
1783     if ( ms_winCaptureNext )
1784     {
1785         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
1786
1787         wxWindowNext *item = ms_winCaptureNext;
1788         ms_winCaptureNext = item->next;
1789         delete item;
1790     }
1791     //else: stack is empty, no previous capture
1792
1793     wxLogTrace(_T("mousecapture"),
1794                _T("After ReleaseMouse() mouse is captured by 0x%08x"),
1795                GetCapture());
1796 }
1797
1798 // ----------------------------------------------------------------------------
1799 // global functions
1800 // ----------------------------------------------------------------------------
1801
1802 wxWindow* wxGetTopLevelParent(wxWindow *win)
1803 {
1804     while ( win && !win->IsTopLevel() )
1805          win = win->GetParent();
1806
1807     return win;
1808 }
1809