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     #include "wx/sizer.h"
  51 #endif // wxUSE_CONSTRAINTS
  52
  53 #if wxUSE_DRAG_AND_DROP
  54     #include "wx/dnd.h"
  55 #endif // wxUSE_DRAG_AND_DROP
  56
  57 #if wxUSE_HELP
  58     #include "wx/cshelp.h"
  59 #endif // wxUSE_HELP
  60
  61 #if wxUSE_TOOLTIPS
  62     #include "wx/tooltip.h"
  63 #endif // wxUSE_TOOLTIPS
  64
  65 #if wxUSE_CARET
  66     #include "wx/caret.h"
  67 #endif // wxUSE_CARET
  68
  69 // ----------------------------------------------------------------------------
  70 // static data
  71 // ----------------------------------------------------------------------------
  72
  73 int wxWindowBase::ms_lastControlId = -200;
  74
  75 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  76
  77 // ----------------------------------------------------------------------------
  78 // event table
  79 // ----------------------------------------------------------------------------
  80
  81 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  82     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  83     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  84     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
  85
  86 #if wxUSE_HELP
  87     EVT_HELP(-1, wxWindowBase::OnHelp)
  88 #endif // wxUSE_HELP
  89
  90 END_EVENT_TABLE()
  91
  92 // ============================================================================
  93 // implementation of the common functionality of the wxWindow class
  94 // ============================================================================
  95
  96 // ----------------------------------------------------------------------------
  97 // initialization
  98 // ----------------------------------------------------------------------------
  99
 100 // the default initialization
 101 void wxWindowBase::InitBase()
 102 {
 103     // no window yet, no parent nor children
 104     m_parent = (wxWindow *)NULL;
 105     m_windowId = -1;
 106     m_children.DeleteContents( FALSE ); // don't auto delete node data
 107
 108     // no constraints on the minimal window size
 109     m_minWidth =
 110     m_minHeight =
 111     m_maxWidth =
 112     m_maxHeight = -1;
 113
 114     // window is created enabled but it's not visible yet
 115     m_isShown = FALSE;
 116     m_isEnabled = TRUE;
 117
 118     // the default event handler is just this window
 119     m_eventHandler = this;
 120
 121 #if wxUSE_VALIDATORS
 122     // no validator
 123     m_windowValidator = (wxValidator *) NULL;
 124 #endif // wxUSE_VALIDATORS
 125
 126     // use the system default colours
 127     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 128     m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 129
 130     // don't set the font here for wxMSW as we don't call WM_SETFONT here and
 131     // so the font is *not* really set - but calls to SetFont() later won't do
 132     // anything because m_font appears to be already set!
 133 #ifndef __WXMSW__
 134     m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 135 #endif // __WXMSW__
 136
 137     // the colours/fonts are default for now
 138     m_hasBgCol =
 139     m_hasFgCol =
 140     m_hasFont = FALSE;
 141
 142     // no style bits
 143     m_exStyle =
 144     m_windowStyle = 0;
 145
 146     // an optimization for the event processing: checking this flag is much
 147     // faster than using IsKindOf(CLASSINFO(wxWindow))
 148     m_isWindow = TRUE;
 149
 150 #if wxUSE_CONSTRAINTS
 151     // no constraints whatsoever
 152     m_constraints = (wxLayoutConstraints *) NULL;
 153     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 154     m_windowSizer = (wxSizer *) NULL;
 155     m_autoLayout = FALSE;
 156 #endif // wxUSE_CONSTRAINTS
 157
 158 #if wxUSE_DRAG_AND_DROP
 159     m_dropTarget = (wxDropTarget *)NULL;
 160 #endif // wxUSE_DRAG_AND_DROP
 161
 162 #if wxUSE_TOOLTIPS
 163     m_tooltip = (wxToolTip *)NULL;
 164 #endif // wxUSE_TOOLTIPS
 165
 166 #if wxUSE_CARET
 167     m_caret = (wxCaret *)NULL;
 168 #endif // wxUSE_CARET
 169
 170 #if wxUSE_PALETTE
 171     m_custompalette = false;
 172 #endif // wxUSE_PALETTE
 173
 174     // Whether we're using the current theme for this window (wxGTK only for now)
 175     m_themeEnabled = FALSE;
 176 }
 177
 178 // common part of window creation process
 179 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 180                               wxWindowID id,
 181                               const wxPoint& WXUNUSED(pos),
 182                               const wxSize& WXUNUSED(size),
 183                               long style,
 184                               const wxValidator& validator,
 185                               const wxString& name)
 186 {
 187     // m_isWindow is set to TRUE in wxWindowBase::Init() as well as many other
 188     // member variables - check that it has been called (will catch the case
 189     // when a new ctor is added which doesn't call InitWindow)
 190     wxASSERT_MSG( m_isWindow, wxT("Init() must have been called before!") );
 191
 192     // generate a new id if the user doesn't care about it
 193     m_windowId = id == -1 ? NewControlId() : id;
 194
 195     SetName(name);
 196     SetWindowStyleFlag(style);
 197     SetParent(parent);
 198
 199 #if wxUSE_VALIDATORS
 200     SetValidator(validator);
 201 #endif // wxUSE_VALIDATORS
 202
 203     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 204     // have it too - like this it's possible to set it only in the top level
 205     // dialog/frame and all children will inherit it by defult
 206     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 207     {
 208         SetExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
 209     }
 210
 211     return TRUE;
 212 }
 213
 214 // ----------------------------------------------------------------------------
 215 // destruction
 216 // ----------------------------------------------------------------------------
 217
 218 // common clean up
 219 wxWindowBase::~wxWindowBase()
 220 {
 221     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 222
 223     // FIXME if these 2 cases result from programming errors in the user code
 224     //       we should probably assert here instead of silently fixing them
 225
 226     // Just in case the window has been Closed, but we're then deleting
 227     // immediately: don't leave dangling pointers.
 228     wxPendingDelete.DeleteObject(this);
 229
 230     // Just in case we've loaded a top-level window via LoadNativeDialog but
 231     // we weren't a dialog class
 232     wxTopLevelWindows.DeleteObject(this);
 233
 234     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 235
 236 #if wxUSE_CARET
 237     if ( m_caret )
 238         delete m_caret;
 239 #endif // wxUSE_CARET
 240
 241 #if wxUSE_VALIDATORS
 242     if ( m_windowValidator )
 243         delete m_windowValidator;
 244 #endif // wxUSE_VALIDATORS
 245
 246 #if wxUSE_CONSTRAINTS
 247     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 248     // at deleted windows as they delete themselves.
 249     DeleteRelatedConstraints();
 250
 251     if ( m_constraints )
 252     {
 253         // This removes any dangling pointers to this window in other windows'
 254         // constraintsInvolvedIn lists.
 255         UnsetConstraints(m_constraints);
 256         delete m_constraints;
 257         m_constraints = NULL;
 258     }
 259
 260     if ( m_windowSizer )
 261         delete m_windowSizer;
 262
 263 #endif // wxUSE_CONSTRAINTS
 264
 265 #if wxUSE_DRAG_AND_DROP
 266     if ( m_dropTarget )
 267         delete m_dropTarget;
 268 #endif // wxUSE_DRAG_AND_DROP
 269
 270 #if wxUSE_TOOLTIPS
 271     if ( m_tooltip )
 272         delete m_tooltip;
 273 #endif // wxUSE_TOOLTIPS
 274
 275     // reset the dangling pointer our parent window may keep to us
 276     if ( m_parent && m_parent->GetDefaultItem() == this )
 277     {
 278         m_parent->SetDefaultItem(NULL);
 279     }
 280 }
 281
 282 bool wxWindowBase::Destroy()
 283 {
 284     delete this;
 285
 286     return TRUE;
 287 }
 288
 289 bool wxWindowBase::Close(bool force)
 290 {
 291     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 292     event.SetEventObject(this);
 293 #if WXWIN_COMPATIBILITY
 294     event.SetForce(force);
 295 #endif // WXWIN_COMPATIBILITY
 296     event.SetCanVeto(!force);
 297
 298     // return FALSE if window wasn't closed because the application vetoed the
 299     // close event
 300     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 301 }
 302
 303 bool wxWindowBase::DestroyChildren()
 304 {
 305     wxWindowList::Node *node;
 306     for ( ;; )
 307     {
 308         // we iterate until the list becomes empty
 309         node = GetChildren().GetFirst();
 310         if ( !node )
 311             break;
 312
 313         wxWindow *child = node->GetData();
 314
 315         wxASSERT_MSG( child, wxT("children list contains empty nodes") );
 316
 317         child->Show(FALSE);
 318         delete child;
 319
 320         wxASSERT_MSG( !GetChildren().Find(child),
 321                       wxT("child didn't remove itself using RemoveChild()") );
 322     }
 323
 324     return TRUE;
 325 }
 326
 327 // ----------------------------------------------------------------------------
 328 // size/position related methods
 329 // ----------------------------------------------------------------------------
 330
 331 // centre the window with respect to its parent in either (or both) directions
 332 void wxWindowBase::Centre(int direction)
 333 {
 334     // the position/size of the parent window or of the entire screen
 335     wxPoint posParent;
 336     int widthParent, heightParent;
 337
 338     wxWindow *parent = NULL;
 339
 340     if ( !(direction & wxCENTRE_ON_SCREEN) )
 341     {
 342         // find the parent to centre this window on: it should be the
 343         // immediate parent for the controls but the top level parent for the
 344         // top level windows (like dialogs)
 345         parent = GetParent();
 346         if ( IsTopLevel() )
 347         {
 348             while ( parent && !parent->IsTopLevel() )
 349             {
 350                 parent = parent->GetParent();
 351             }
 352         }
 353
 354         // did we find the parent?
 355         if ( !parent )
 356         {
 357             // no other choice
 358             direction |= wxCENTRE_ON_SCREEN;
 359         }
 360     }
 361
 362     if ( direction & wxCENTRE_ON_SCREEN )
 363     {
 364         // centre with respect to the whole screen
 365         wxDisplaySize(&widthParent, &heightParent);
 366     }
 367     else
 368     {
 369         if ( IsTopLevel() )
 370         {
 371             // centre on the parent
 372             parent->GetSize(&widthParent, &heightParent);
 373
 374             // adjust to the parents position
 375             posParent = parent->GetPosition();
 376         }
 377         else
 378         {
 379             // centre inside the parents client rectangle
 380             parent->GetClientSize(&widthParent, &heightParent);
 381         }
 382     }
 383
 384     int width, height;
 385     GetSize(&width, &height);
 386
 387     int xNew = -1,
 388         yNew = -1;
 389
 390     if ( direction & wxHORIZONTAL )
 391         xNew = (widthParent - width)/2;
 392
 393     if ( direction & wxVERTICAL )
 394         yNew = (heightParent - height)/2;
 395
 396     xNew += posParent.x;
 397     yNew += posParent.y;
 398
 399     // Base size of the visible dimensions of the display
 400     // to take into account the taskbar
 401     wxRect rect = wxGetClientDisplayRect();
 402     wxSize size (rect.width,rect.height);
 403
 404     if (posParent.x >= 0)  // if parent is on the main display
 405     {
 406         if (xNew < 0)
 407             xNew = 0;
 408         else if (xNew+width > size.x)
 409             xNew = size.x-width-1;
 410     }
 411     if (posParent.y >= 0)  // if parent is on the main display
 412     {
 413         if (yNew+height > size.y)
 414             yNew = size.y-height-1;
 415
 416         // Make certain that the title bar is initially visible
 417         // always, even if this would push the bottom of the
 418         // dialog of the visible area of the display
 419         if (yNew < 0)
 420             yNew = 0;
 421     }
 422
 423     // move the window to this position (keeping the old size but using
 424     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 425     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 426 }
 427
 428 // fits the window around the children
 429 void wxWindowBase::Fit()
 430 {
 431     if ( GetChildren().GetCount() > 0 )
 432     {
 433         wxSize size = DoGetBestSize();
 434
 435         // for compatibility with the old versions and because it really looks
 436         // slightly more pretty like this, add a pad
 437         size.x += 7;
 438         size.y += 14;
 439
 440         SetClientSize(size);
 441     }
 442     //else: do nothing if we have no children
 443 }
 444
 445 // return the size best suited for the current window
 446 wxSize wxWindowBase::DoGetBestSize() const
 447 {
 448     if ( GetChildren().GetCount() > 0 )
 449     {
 450         // our minimal acceptable size is such that all our windows fit inside
 451         int maxX = 0,
 452             maxY = 0;
 453
 454         for ( wxWindowList::Node *node = GetChildren().GetFirst();
 455               node;
 456               node = node->GetNext() )
 457         {
 458             wxWindow *win = node->GetData();
 459             if ( win->IsTopLevel()
 460 #if wxUSE_STATUSBAR
 461                     || wxDynamicCast(win, wxStatusBar)
 462 #endif // wxUSE_STATUSBAR
 463                )
 464             {
 465                 // dialogs and frames lie in different top level windows -
 466                 // don't deal with them here; as for the status bars, they
 467                 // don't lie in the client area at all
 468                 continue;
 469             }
 470
 471             int wx, wy, ww, wh;
 472             win->GetPosition(&wx, &wy);
 473
 474             // if the window hadn't been positioned yet, assume that it is in
 475             // the origin
 476             if ( wx == -1 )
 477                 wx = 0;
 478             if ( wy == -1 )
 479                 wy = 0;
 480
 481             win->GetSize(&ww, &wh);
 482             if ( wx + ww > maxX )
 483                 maxX = wx + ww;
 484             if ( wy + wh > maxY )
 485                 maxY = wy + wh;
 486         }
 487
 488         return wxSize(maxX, maxY);
 489     }
 490     else
 491     {
 492         // for a generic window there is no natural best size - just use the
 493         // current one
 494         return GetSize();
 495     }
 496 }
 497
 498 // by default the origin is not shifted
 499 wxPoint wxWindowBase::GetClientAreaOrigin() const
 500 {
 501     return wxPoint(0, 0);
 502 }
 503
 504 // set the min/max size of the window
 505 void wxWindowBase::SetSizeHints(int minW, int minH,
 506                                 int maxW, int maxH,
 507                                 int WXUNUSED(incW), int WXUNUSED(incH))
 508 {
 509     m_minWidth = minW;
 510     m_maxWidth = maxW;
 511     m_minHeight = minH;
 512     m_maxHeight = maxH;
 513 }
 514
 515 // ----------------------------------------------------------------------------
 516 // show/hide/enable/disable the window
 517 // ----------------------------------------------------------------------------
 518
 519 bool wxWindowBase::Show(bool show)
 520 {
 521     if ( show != m_isShown )
 522     {
 523         m_isShown = show;
 524
 525         return TRUE;
 526     }
 527     else
 528     {
 529         return FALSE;
 530     }
 531 }
 532
 533 bool wxWindowBase::Enable(bool enable)
 534 {
 535     if ( enable != m_isEnabled )
 536     {
 537         m_isEnabled = enable;
 538
 539         return TRUE;
 540     }
 541     else
 542     {
 543         return FALSE;
 544     }
 545 }
 546 // ----------------------------------------------------------------------------
 547 // RTTI
 548 // ----------------------------------------------------------------------------
 549
 550 bool wxWindowBase::IsTopLevel() const
 551 {
 552     return FALSE;
 553 }
 554
 555 // ----------------------------------------------------------------------------
 556 // reparenting the window
 557 // ----------------------------------------------------------------------------
 558
 559 void wxWindowBase::AddChild(wxWindowBase *child)
 560 {
 561     wxCHECK_RET( child, wxT("can't add a NULL child") );
 562
 563     // this should never happen and it will lead to a crash later if it does
 564     // because RemoveChild() will remove only one node from the children list
 565     // and the other(s) one(s) will be left with dangling pointers in them
 566     wxASSERT_MSG( !GetChildren().Find(child), _T("AddChild() called twice") );
 567
 568     GetChildren().Append(child);
 569     child->SetParent(this);
 570 }
 571
 572 void wxWindowBase::RemoveChild(wxWindowBase *child)
 573 {
 574     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 575
 576     GetChildren().DeleteObject(child);
 577     child->SetParent((wxWindow *)NULL);
 578 }
 579
 580 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 581 {
 582     wxWindow *oldParent = GetParent();
 583     if ( newParent == oldParent )
 584     {
 585         // nothing done
 586         return FALSE;
 587     }
 588
 589     // unlink this window from the existing parent.
 590     if ( oldParent )
 591     {
 592         oldParent->RemoveChild(this);
 593     }
 594     else
 595     {
 596         wxTopLevelWindows.DeleteObject(this);
 597     }
 598
 599     // add it to the new one
 600     if ( newParent )
 601     {
 602         newParent->AddChild(this);
 603     }
 604     else
 605     {
 606         wxTopLevelWindows.Append(this);
 607     }
 608
 609     return TRUE;
 610 }
 611
 612 // ----------------------------------------------------------------------------
 613 // event handler stuff
 614 // ----------------------------------------------------------------------------
 615
 616 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 617 {
 618     handler->SetNextHandler(GetEventHandler());
 619     SetEventHandler(handler);
 620 }
 621
 622 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 623 {
 624     wxEvtHandler *handlerA = GetEventHandler();
 625     if ( handlerA )
 626     {
 627         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 628         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 629         SetEventHandler(handlerB);
 630         if ( deleteHandler )
 631         {
 632             delete handlerA;
 633             handlerA = (wxEvtHandler *)NULL;
 634         }
 635     }
 636
 637     return handlerA;
 638 }
 639
 640 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 641 {
 642     wxCHECK_MSG( handler, FALSE, _T("RemoveEventHandler(NULL) called") );
 643
 644     wxEvtHandler *handlerPrev = NULL,
 645                  *handlerCur = GetEventHandler();
 646     while ( handlerCur )
 647     {
 648         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 649
 650         if ( handlerCur == handler )
 651         {
 652             if ( handlerPrev )
 653             {
 654                 handlerPrev->SetNextHandler(handlerNext);
 655             }
 656             else
 657             {
 658                 SetEventHandler(handlerNext);
 659             }
 660
 661             handler->SetNextHandler(NULL);
 662
 663             return TRUE;
 664         }
 665
 666         handlerPrev = handlerCur;
 667         handlerCur = handlerNext;
 668     }
 669
 670     wxFAIL_MSG( _T("where has the event handler gone?") );
 671
 672     return FALSE;
 673 }
 674
 675 // ----------------------------------------------------------------------------
 676 // cursors, fonts &c
 677 // ----------------------------------------------------------------------------
 678
 679 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
 680 {
 681     if ( !colour.Ok() || (colour == m_backgroundColour) )
 682         return FALSE;
 683
 684     m_backgroundColour = colour;
 685
 686     m_hasBgCol = TRUE;
 687
 688     return TRUE;
 689 }
 690
 691 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
 692 {
 693     if ( !colour.Ok() || (colour == m_foregroundColour) )
 694         return FALSE;
 695
 696     m_foregroundColour = colour;
 697
 698     m_hasFgCol = TRUE;
 699
 700     return TRUE;
 701 }
 702
 703 bool wxWindowBase::SetCursor(const wxCursor& cursor)
 704 {
 705     // setting an invalid cursor is ok, it means that we don't have any special
 706     // cursor
 707     if ( m_cursor == cursor )
 708     {
 709         // no change
 710         return FALSE;
 711     }
 712
 713     m_cursor = cursor;
 714
 715     return TRUE;
 716 }
 717
 718 bool wxWindowBase::SetFont(const wxFont& font)
 719 {
 720     // don't try to set invalid font, always fall back to the default
 721     const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
 722
 723     if ( fontOk == m_font )
 724     {
 725         // no change
 726         return FALSE;
 727     }
 728
 729     m_font = fontOk;
 730
 731     m_hasFont = TRUE;
 732
 733     return TRUE;
 734 }
 735
 736 #if wxUSE_CARET
 737 void wxWindowBase::SetCaret(wxCaret *caret)
 738 {
 739     if ( m_caret )
 740     {
 741         delete m_caret;
 742     }
 743
 744     m_caret = caret;
 745
 746     if ( m_caret )
 747     {
 748         wxASSERT_MSG( m_caret->GetWindow() == this,
 749                       wxT("caret should be created associated to this window") );
 750     }
 751 }
 752 #endif // wxUSE_CARET
 753
 754 #if wxUSE_VALIDATORS
 755 // ----------------------------------------------------------------------------
 756 // validators
 757 // ----------------------------------------------------------------------------
 758
 759 void wxWindowBase::SetValidator(const wxValidator& validator)
 760 {
 761     if ( m_windowValidator )
 762         delete m_windowValidator;
 763
 764     m_windowValidator = (wxValidator *)validator.Clone();
 765
 766     if ( m_windowValidator )
 767         m_windowValidator->SetWindow(this) ;
 768 }
 769 #endif // wxUSE_VALIDATORS
 770
 771 // ----------------------------------------------------------------------------
 772 // update region stuff
 773 // ----------------------------------------------------------------------------
 774
 775 wxRect wxWindowBase::GetUpdateClientRect() const
 776 {
 777     wxRegion rgnUpdate = GetUpdateRegion();
 778     rgnUpdate.Intersect(GetClientRect());
 779     wxRect rectUpdate = rgnUpdate.GetBox();
 780     wxPoint ptOrigin = GetClientAreaOrigin();
 781     rectUpdate.x -= ptOrigin.x;
 782     rectUpdate.y -= ptOrigin.y;
 783
 784     return rectUpdate;
 785 }
 786
 787 bool wxWindowBase::IsExposed(int x, int y) const
 788 {
 789     return m_updateRegion.Contains(x, y) != wxOutRegion;
 790 }
 791
 792 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
 793 {
 794     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
 795 }
 796
 797 // ----------------------------------------------------------------------------
 798 // find window by id or name
 799 // ----------------------------------------------------------------------------
 800
 801 wxWindow *wxWindowBase::FindWindow( long id )
 802 {
 803     if ( id == m_windowId )
 804         return (wxWindow *)this;
 805
 806     wxWindowBase *res = (wxWindow *)NULL;
 807     wxWindowList::Node *node;
 808     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 809     {
 810         wxWindowBase *child = node->GetData();
 811         res = child->FindWindow( id );
 812     }
 813
 814     return (wxWindow *)res;
 815 }
 816
 817 wxWindow *wxWindowBase::FindWindow( const wxString& name )
 818 {
 819     if ( name == m_windowName )
 820         return (wxWindow *)this;
 821
 822     wxWindowBase *res = (wxWindow *)NULL;
 823     wxWindowList::Node *node;
 824     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
 825     {
 826         wxWindow *child = node->GetData();
 827         res = child->FindWindow(name);
 828     }
 829
 830     return (wxWindow *)res;
 831 }
 832
 833 // ----------------------------------------------------------------------------
 834 // dialog oriented functions
 835 // ----------------------------------------------------------------------------
 836
 837 void wxWindowBase::MakeModal(bool modal)
 838 {
 839     // Disable all other windows
 840     if ( IsTopLevel() )
 841     {
 842         wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 843         while (node)
 844         {
 845             wxWindow *win = node->GetData();
 846             if (win != this)
 847                 win->Enable(!modal);
 848
 849             node = node->GetNext();
 850         }
 851     }
 852 }
 853
 854 bool wxWindowBase::Validate()
 855 {
 856 #if wxUSE_VALIDATORS
 857     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 858
 859     wxWindowList::Node *node;
 860     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 861     {
 862         wxWindowBase *child = node->GetData();
 863         wxValidator *validator = child->GetValidator();
 864         if ( validator && !validator->Validate((wxWindow *)this) )
 865         {
 866             return FALSE;
 867         }
 868
 869         if ( recurse && !child->Validate() )
 870         {
 871             return FALSE;
 872         }
 873     }
 874 #endif // wxUSE_VALIDATORS
 875
 876     return TRUE;
 877 }
 878
 879 bool wxWindowBase::TransferDataToWindow()
 880 {
 881 #if wxUSE_VALIDATORS
 882     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 883
 884     wxWindowList::Node *node;
 885     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 886     {
 887         wxWindowBase *child = node->GetData();
 888         wxValidator *validator = child->GetValidator();
 889         if ( validator && !validator->TransferToWindow() )
 890         {
 891             wxLogWarning(_("Could not transfer data to window"));
 892             wxLog::FlushActive();
 893
 894             return FALSE;
 895         }
 896
 897         if ( recurse )
 898         {
 899             if ( !child->TransferDataToWindow() )
 900             {
 901                 // warning already given
 902                 return FALSE;
 903             }
 904         }
 905     }
 906 #endif // wxUSE_VALIDATORS
 907
 908     return TRUE;
 909 }
 910
 911 bool wxWindowBase::TransferDataFromWindow()
 912 {
 913 #if wxUSE_VALIDATORS
 914     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
 915
 916     wxWindowList::Node *node;
 917     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
 918     {
 919         wxWindow *child = node->GetData();
 920         wxValidator *validator = child->GetValidator();
 921         if ( validator && !validator->TransferFromWindow() )
 922         {
 923             // nop warning here because the application is supposed to give
 924             // one itself - we don't know here what might have gone wrongly
 925
 926             return FALSE;
 927         }
 928
 929         if ( recurse )
 930         {
 931             if ( !child->TransferDataFromWindow() )
 932             {
 933                 // warning already given
 934                 return FALSE;
 935             }
 936         }
 937     }
 938 #endif // wxUSE_VALIDATORS
 939
 940     return TRUE;
 941 }
 942
 943 void wxWindowBase::InitDialog()
 944 {
 945     wxInitDialogEvent event(GetId());
 946     event.SetEventObject( this );
 947     GetEventHandler()->ProcessEvent(event);
 948 }
 949
 950 // ----------------------------------------------------------------------------
 951 // context-sensitive help support
 952 // ----------------------------------------------------------------------------
 953
 954 #if wxUSE_HELP
 955
 956 // associate this help text with this window
 957 void wxWindowBase::SetHelpText(const wxString& text)
 958 {
 959     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 960     if ( helpProvider )
 961     {
 962         helpProvider->AddHelp(this, text);
 963     }
 964 }
 965
 966 // associate this help text with all windows with the same id as this
 967 // one
 968 void wxWindowBase::SetHelpTextForId(const wxString& text)
 969 {
 970     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 971     if ( helpProvider )
 972     {
 973         helpProvider->AddHelp(GetId(), text);
 974     }
 975 }
 976
 977 // get the help string associated with this window (may be empty)
 978 wxString wxWindowBase::GetHelpText() const
 979 {
 980     wxString text;
 981     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 982     if ( helpProvider )
 983     {
 984         text = helpProvider->GetHelp(this);
 985     }
 986
 987     return text;
 988 }
 989
 990 // show help for this window
 991 void wxWindowBase::OnHelp(wxHelpEvent& event)
 992 {
 993     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 994     if ( helpProvider )
 995     {
 996         if ( helpProvider->ShowHelp(this) )
 997         {
 998             // skip the event.Skip() below
 999             return;
1000         }
1001     }
1002
1003     event.Skip();
1004 }
1005
1006 #endif // wxUSE_HELP
1007
1008 // ----------------------------------------------------------------------------
1009 // tooltipsroot.Replace("\\", "/");
1010 // ----------------------------------------------------------------------------
1011
1012 #if wxUSE_TOOLTIPS
1013
1014 void wxWindowBase::SetToolTip( const wxString &tip )
1015 {
1016     // don't create the new tooltip if we already have one
1017     if ( m_tooltip )
1018     {
1019         m_tooltip->SetTip( tip );
1020     }
1021     else
1022     {
1023         SetToolTip( new wxToolTip( tip ) );
1024     }
1025
1026     // setting empty tooltip text does not remove the tooltip any more - use
1027     // SetToolTip((wxToolTip *)NULL) for this
1028 }
1029
1030 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1031 {
1032     if ( m_tooltip )
1033         delete m_tooltip;
1034
1035     m_tooltip = tooltip;
1036 }
1037
1038 #endif // wxUSE_TOOLTIPS
1039
1040 // ----------------------------------------------------------------------------
1041 // constraints and sizers
1042 // ----------------------------------------------------------------------------
1043
1044 #if wxUSE_CONSTRAINTS
1045
1046 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1047 {
1048     if ( m_constraints )
1049     {
1050         UnsetConstraints(m_constraints);
1051         delete m_constraints;
1052     }
1053     m_constraints = constraints;
1054     if ( m_constraints )
1055     {
1056         // Make sure other windows know they're part of a 'meaningful relationship'
1057         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1058             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1059         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1060             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1061         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1062             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1063         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1064             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1065         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1066             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1067         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1068             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1069         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1070             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1071         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1072             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1073     }
1074 }
1075
1076 // This removes any dangling pointers to this window in other windows'
1077 // constraintsInvolvedIn lists.
1078 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1079 {
1080     if ( c )
1081     {
1082         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1083             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1084         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1085             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1086         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1087             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1088         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1089             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1090         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1091             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1092         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1093             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1094         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1095             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1096         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1097             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1098     }
1099 }
1100
1101 // Back-pointer to other windows we're involved with, so if we delete this
1102 // window, we must delete any constraints we're involved with.
1103 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1104 {
1105     if ( !m_constraintsInvolvedIn )
1106         m_constraintsInvolvedIn = new wxWindowList;
1107     if ( !m_constraintsInvolvedIn->Find(otherWin) )
1108         m_constraintsInvolvedIn->Append(otherWin);
1109 }
1110
1111 // REMOVE back-pointer to other windows we're involved with.
1112 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1113 {
1114     if ( m_constraintsInvolvedIn )
1115         m_constraintsInvolvedIn->DeleteObject(otherWin);
1116 }
1117
1118 // Reset any constraints that mention this window
1119 void wxWindowBase::DeleteRelatedConstraints()
1120 {
1121     if ( m_constraintsInvolvedIn )
1122     {
1123         wxWindowList::Node *node = m_constraintsInvolvedIn->GetFirst();
1124         while (node)
1125         {
1126             wxWindow *win = node->GetData();
1127             wxLayoutConstraints *constr = win->GetConstraints();
1128
1129             // Reset any constraints involving this window
1130             if ( constr )
1131             {
1132                 constr->left.ResetIfWin(this);
1133                 constr->top.ResetIfWin(this);
1134                 constr->right.ResetIfWin(this);
1135                 constr->bottom.ResetIfWin(this);
1136                 constr->width.ResetIfWin(this);
1137                 constr->height.ResetIfWin(this);
1138                 constr->centreX.ResetIfWin(this);
1139                 constr->centreY.ResetIfWin(this);
1140             }
1141
1142             wxWindowList::Node *next = node->GetNext();
1143             delete node;
1144             node = next;
1145         }
1146
1147         delete m_constraintsInvolvedIn;
1148         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1149     }
1150 }
1151
1152 void wxWindowBase::SetSizer(wxSizer *sizer)
1153 {
1154     if (m_windowSizer) delete m_windowSizer;
1155
1156     m_windowSizer = sizer;
1157 }
1158
1159 bool wxWindowBase::Layout()
1160 {
1161     // If there is a sizer, use it instead of the constraints
1162     if ( GetSizer() )
1163     {
1164         int w, h;
1165         GetClientSize(&w, &h);
1166
1167         GetSizer()->SetDimension( 0, 0, w, h );
1168 #if defined __WXPM__
1169         OS2Layout(w, h);
1170 #endif
1171     }
1172     else
1173     {
1174         wxLayoutConstraints *constr = GetConstraints();
1175         bool wasOk = constr && constr->AreSatisfied();
1176
1177         ResetConstraints();   // Mark all constraints as unevaluated
1178
1179         // if we're a top level panel (i.e. our parent is frame/dialog), our
1180         // own constraints will never be satisfied any more unless we do it
1181         // here
1182         if ( wasOk )
1183         {
1184             int noChanges = 1;
1185             while ( noChanges > 0 )
1186             {
1187                 constr->SatisfyConstraints(this, &noChanges);
1188             }
1189         }
1190
1191         DoPhase(1);           // Layout children
1192         DoPhase(2);           // Layout grand children
1193         SetConstraintSizes(); // Recursively set the real window sizes
1194     }
1195
1196     return TRUE;
1197 }
1198
1199
1200 // Do a phase of evaluating constraints: the default behaviour. wxSizers may
1201 // do a similar thing, but also impose their own 'constraints' and order the
1202 // evaluation differently.
1203 bool wxWindowBase::LayoutPhase1(int *noChanges)
1204 {
1205     wxLayoutConstraints *constr = GetConstraints();
1206     if ( constr )
1207     {
1208         return constr->SatisfyConstraints(this, noChanges);
1209     }
1210     else
1211         return TRUE;
1212 }
1213
1214 bool wxWindowBase::LayoutPhase2(int *noChanges)
1215 {
1216     *noChanges = 0;
1217
1218     // Layout children
1219     DoPhase(1);
1220     DoPhase(2);
1221     return TRUE;
1222 }
1223
1224 // Do a phase of evaluating child constraints
1225 bool wxWindowBase::DoPhase(int phase)
1226 {
1227     int noIterations = 0;
1228     int maxIterations = 500;
1229     int noChanges = 1;
1230     int noFailures = 0;
1231     wxWindowList succeeded;
1232     while ((noChanges > 0) && (noIterations < maxIterations))
1233     {
1234         noChanges = 0;
1235         noFailures = 0;
1236         wxWindowList::Node *node = GetChildren().GetFirst();
1237         while (node)
1238         {
1239             wxWindow *child = node->GetData();
1240             if ( !child->IsTopLevel() )
1241             {
1242                 wxLayoutConstraints *constr = child->GetConstraints();
1243                 if ( constr )
1244                 {
1245                     if ( !succeeded.Find(child) )
1246                     {
1247                         int tempNoChanges = 0;
1248                         bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
1249                         noChanges += tempNoChanges;
1250                         if ( success )
1251                         {
1252                             succeeded.Append(child);
1253                         }
1254                     }
1255                 }
1256             }
1257             node = node->GetNext();
1258         }
1259
1260         noIterations++;
1261     }
1262
1263     return TRUE;
1264 }
1265
1266 void wxWindowBase::ResetConstraints()
1267 {
1268     wxLayoutConstraints *constr = GetConstraints();
1269     if ( constr )
1270     {
1271         constr->left.SetDone(FALSE);
1272         constr->top.SetDone(FALSE);
1273         constr->right.SetDone(FALSE);
1274         constr->bottom.SetDone(FALSE);
1275         constr->width.SetDone(FALSE);
1276         constr->height.SetDone(FALSE);
1277         constr->centreX.SetDone(FALSE);
1278         constr->centreY.SetDone(FALSE);
1279     }
1280
1281     wxWindowList::Node *node = GetChildren().GetFirst();
1282     while (node)
1283     {
1284         wxWindow *win = node->GetData();
1285         if ( !win->IsTopLevel() )
1286             win->ResetConstraints();
1287         node = node->GetNext();
1288     }
1289 }
1290
1291 // Need to distinguish between setting the 'fake' size for windows and sizers,
1292 // and setting the real values.
1293 void wxWindowBase::SetConstraintSizes(bool recurse)
1294 {
1295     wxLayoutConstraints *constr = GetConstraints();
1296     if ( constr && constr->AreSatisfied() )
1297     {
1298         int x = constr->left.GetValue();
1299         int y = constr->top.GetValue();
1300         int w = constr->width.GetValue();
1301         int h = constr->height.GetValue();
1302
1303         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1304              (constr->height.GetRelationship() != wxAsIs) )
1305         {
1306             SetSize(x, y, w, h);
1307         }
1308         else
1309         {
1310             // If we don't want to resize this window, just move it...
1311             Move(x, y);
1312         }
1313     }
1314     else if ( constr )
1315     {
1316         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1317                    GetClassInfo()->GetClassName(),
1318                    GetName().c_str());
1319     }
1320
1321     if ( recurse )
1322     {
1323         wxWindowList::Node *node = GetChildren().GetFirst();
1324         while (node)
1325         {
1326             wxWindow *win = node->GetData();
1327             if ( !win->IsTopLevel() && win->GetConstraints() )
1328                 win->SetConstraintSizes();
1329             node = node->GetNext();
1330         }
1331     }
1332 }
1333
1334 // Only set the size/position of the constraint (if any)
1335 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1336 {
1337     wxLayoutConstraints *constr = GetConstraints();
1338     if ( constr )
1339     {
1340         if ( x != -1 )
1341         {
1342             constr->left.SetValue(x);
1343             constr->left.SetDone(TRUE);
1344         }
1345         if ( y != -1 )
1346         {
1347             constr->top.SetValue(y);
1348             constr->top.SetDone(TRUE);
1349         }
1350         if ( w != -1 )
1351         {
1352             constr->width.SetValue(w);
1353             constr->width.SetDone(TRUE);
1354         }
1355         if ( h != -1 )
1356         {
1357             constr->height.SetValue(h);
1358             constr->height.SetDone(TRUE);
1359         }
1360     }
1361 }
1362
1363 void wxWindowBase::MoveConstraint(int x, int y)
1364 {
1365     wxLayoutConstraints *constr = GetConstraints();
1366     if ( constr )
1367     {
1368         if ( x != -1 )
1369         {
1370             constr->left.SetValue(x);
1371             constr->left.SetDone(TRUE);
1372         }
1373         if ( y != -1 )
1374         {
1375             constr->top.SetValue(y);
1376             constr->top.SetDone(TRUE);
1377         }
1378     }
1379 }
1380
1381 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1382 {
1383     wxLayoutConstraints *constr = GetConstraints();
1384     if ( constr )
1385     {
1386         *w = constr->width.GetValue();
1387         *h = constr->height.GetValue();
1388     }
1389     else
1390         GetSize(w, h);
1391 }
1392
1393 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1394 {
1395     wxLayoutConstraints *constr = GetConstraints();
1396     if ( constr )
1397     {
1398         *w = constr->width.GetValue();
1399         *h = constr->height.GetValue();
1400     }
1401     else
1402         GetClientSize(w, h);
1403 }
1404
1405 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags)
1406 {
1407     // don't do it for the dialogs/frames - they float independently of their
1408     // parent
1409     if ( !IsTopLevel() )
1410     {
1411         wxWindow *parent = GetParent();
1412         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1413         {
1414             wxPoint pt(parent->GetClientAreaOrigin());
1415             x += pt.x;
1416             y += pt.y;
1417         }
1418     }
1419 }
1420
1421
1422 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1423 {
1424     wxLayoutConstraints *constr = GetConstraints();
1425     if ( constr )
1426     {
1427         *x = constr->left.GetValue();
1428         *y = constr->top.GetValue();
1429     }
1430     else
1431         GetPosition(x, y);
1432 }
1433
1434 #endif // wxUSE_CONSTRAINTS
1435
1436 // ----------------------------------------------------------------------------
1437 // do Update UI processing for child controls
1438 // ----------------------------------------------------------------------------
1439
1440 // TODO: should this be implemented for the child window rather
1441 // than the parent? Then you can override it e.g. for wxCheckBox
1442 // to do the Right Thing rather than having to assume a fixed number
1443 // of control classes.
1444 void wxWindowBase::UpdateWindowUI()
1445 {
1446 #if wxUSE_CONTROLS
1447     wxUpdateUIEvent event(GetId());
1448     event.m_eventObject = this;
1449
1450     if ( GetEventHandler()->ProcessEvent(event) )
1451     {
1452         if ( event.GetSetEnabled() )
1453             Enable(event.GetEnabled());
1454
1455         if ( event.GetSetText() )
1456         {
1457             wxControl *control = wxDynamicCastThis(wxControl);
1458             if ( control )
1459             {
1460 #if wxUSE_TEXTCTRL
1461                 wxTextCtrl *text = wxDynamicCast(control, wxTextCtrl);
1462                 if ( text )
1463                     text->SetValue(event.GetText());
1464                 else
1465 #endif // wxUSE_TEXTCTRL
1466                     control->SetLabel(event.GetText());
1467             }
1468         }
1469
1470 #if wxUSE_CHECKBOX
1471         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1472         if ( checkbox )
1473         {
1474             if ( event.GetSetChecked() )
1475                 checkbox->SetValue(event.GetChecked());
1476         }
1477 #endif // wxUSE_CHECKBOX
1478
1479 #if wxUSE_RADIOBTN
1480         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1481         if ( radiobtn )
1482         {
1483             if ( event.GetSetChecked() )
1484                 radiobtn->SetValue(event.GetChecked());
1485         }
1486 #endif // wxUSE_RADIOBTN
1487     }
1488 #endif // wxUSE_CONTROLS
1489 }
1490
1491 // ----------------------------------------------------------------------------
1492 // dialog units translations
1493 // ----------------------------------------------------------------------------
1494
1495 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1496 {
1497     int charWidth = GetCharWidth();
1498     int charHeight = GetCharHeight();
1499     wxPoint pt2(-1, -1);
1500     if (pt.x != -1)
1501         pt2.x = (int) ((pt.x * 4) / charWidth) ;
1502     if (pt.y != -1)
1503         pt2.y = (int) ((pt.y * 8) / charHeight) ;
1504
1505     return pt2;
1506 }
1507
1508 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1509 {
1510     int charWidth = GetCharWidth();
1511     int charHeight = GetCharHeight();
1512     wxPoint pt2(-1, -1);
1513     if (pt.x != -1)
1514         pt2.x = (int) ((pt.x * charWidth) / 4) ;
1515     if (pt.y != -1)
1516         pt2.y = (int) ((pt.y * charHeight) / 8) ;
1517
1518     return pt2;
1519 }
1520
1521 // ----------------------------------------------------------------------------
1522 // event handlers
1523 // ----------------------------------------------------------------------------
1524
1525 // propagate the colour change event to the subwindows
1526 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1527 {
1528     wxWindowList::Node *node = GetChildren().GetFirst();
1529     while ( node )
1530     {
1531         // Only propagate to non-top-level windows
1532         wxWindow *win = node->GetData();
1533         if ( !win->IsTopLevel() )
1534         {
1535             wxSysColourChangedEvent event2;
1536             event.m_eventObject = win;
1537             win->GetEventHandler()->ProcessEvent(event2);
1538         }
1539
1540         node = node->GetNext();
1541     }
1542 }
1543
1544 // the default action is to populate dialog with data when it's created
1545 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1546 {
1547     TransferDataToWindow();
1548 }
1549
1550 // process Ctrl-Alt-mclick
1551 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1552 {
1553 #if wxUSE_MSGDLG
1554     if ( event.ControlDown() && event.AltDown() )
1555     {
1556         // don't translate these strings
1557         wxString port;
1558
1559 #ifdef __WXUNIVERSAL__
1560         port = _T("Univ/");
1561 #endif // __WXUNIVERSAL__
1562
1563         switch ( wxGetOsVersion() )
1564         {
1565             case wxMOTIF_X:     port = _T("Motif"); break;
1566             case wxMAC:
1567             case wxMAC_DARWIN:  port = _T("Mac"); break;
1568             case wxBEOS:        port = _T("BeOS"); break;
1569             case wxGTK:
1570             case wxGTK_WIN32:
1571             case wxGTK_OS2:
1572             case wxGTK_BEOS:    port = _T("GTK"); break;
1573             case wxWINDOWS:
1574             case wxPENWINDOWS:
1575             case wxWINDOWS_NT:
1576             case wxWIN32S:
1577             case wxWIN95:
1578             case wxWIN386:      port = _T("MS Windows"); break;
1579             case wxMGL_UNIX:
1580             case wxMGL_X:
1581             case wxMGL_WIN32:
1582             case wxMGL_OS2:     port = _T("MGL"); break;
1583             case wxWINDOWS_OS2:
1584             case wxOS2_PM:      port = _T("OS/2"); break;
1585             default:            port = _T("unknown"); break;
1586         }
1587
1588         wxMessageBox(wxString::Format(
1589                                       _T(
1590                                         "       wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWindows team"
1591                                         ),
1592                                       port.c_str(),
1593                                       wxMAJOR_VERSION,
1594                                       wxMINOR_VERSION,
1595                                       wxRELEASE_NUMBER,
1596 #if wxUSE_UNICODE
1597                                       L" (Unicode)",
1598 #else
1599                                       "",
1600 #endif
1601                                       __TDATE__,
1602                                       __TTIME__
1603                                      ),
1604                      _T("wxWindows information"),
1605                      wxICON_INFORMATION | wxOK,
1606                      (wxWindow *)this);
1607     }
1608     else
1609 #endif // wxUSE_MSGDLG
1610     {
1611         event.Skip();
1612     }
1613 }
1614
1615 // ----------------------------------------------------------------------------
1616 // list classes implementation
1617 // ----------------------------------------------------------------------------
1618
1619 void wxWindowListNode::DeleteData()
1620 {
1621     delete (wxWindow *)GetData();
1622 }
1623
1624 // ----------------------------------------------------------------------------
1625 // borders
1626 // ----------------------------------------------------------------------------
1627
1628 wxBorder wxWindowBase::GetBorder() const
1629 {
1630     wxBorder border = (wxBorder)(m_windowStyle & wxBORDER_MASK);
1631     if ( border == wxBORDER_DEFAULT )
1632     {
1633         border = GetDefaultBorder();
1634     }
1635
1636     return border;
1637 }
1638
1639 wxBorder wxWindowBase::GetDefaultBorder() const
1640 {
1641     return wxBORDER_NONE;
1642 }
1643
1644 // ----------------------------------------------------------------------------
1645 // hit testing
1646 // ----------------------------------------------------------------------------
1647
1648 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
1649 {
1650     // here we just check if the point is inside the window or not
1651
1652     // check the top and left border first
1653     bool outside = x < 0 || y < 0;
1654     if ( !outside )
1655     {
1656         // check the right and bottom borders too
1657         wxSize size = GetSize();
1658         outside = x >= size.x || y >= size.y;
1659     }
1660
1661     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
1662 }
1663
1664 // ----------------------------------------------------------------------------
1665 // mouse capture
1666 // ----------------------------------------------------------------------------
1667
1668 struct WXDLLEXPORT wxWindowNext
1669 {
1670     wxWindow *win;
1671     wxWindowNext *next;
1672 } *wxWindowBase::ms_winCaptureNext = NULL;
1673
1674 void wxWindowBase::CaptureMouse()
1675 {
1676     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(0x%08x)"), this);
1677
1678     wxWindow *winOld = GetCapture();
1679     if ( winOld )
1680     {
1681         // save it on stack
1682         wxWindowNext *item = new wxWindowNext;
1683         item->win = winOld;
1684         item->next = ms_winCaptureNext;
1685         ms_winCaptureNext = item;
1686     }
1687     //else: no mouse capture to save
1688
1689     DoCaptureMouse();
1690 }
1691
1692 void wxWindowBase::ReleaseMouse()
1693 {
1694     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(0x%08x)"), this);
1695
1696     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") )
1697
1698     DoReleaseMouse();
1699
1700     if ( ms_winCaptureNext )
1701     {
1702         ms_winCaptureNext->win->CaptureMouse();
1703
1704         wxWindowNext *item = ms_winCaptureNext;
1705         ms_winCaptureNext = item->next;
1706         delete item;
1707     }
1708     //else: stack is empty, no previous capture
1709
1710     wxLogTrace(_T("mousecapture"),
1711                _T("After ReleaseMouse() mouse is captured by 0x%08x"),
1712                GetCapture());
1713 }
1714