]> git.saurik.com Git - wxWidgets.git/blob - src/common/wincmn.cpp
changing compositing mode for Clear, see #12756
[wxWidgets.git] / src / common / wincmn.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/window.cpp
3 // Purpose: common (to all ports) wxWindow functions
4 // Author: Julian Smart, Vadim Zeitlin
5 // Modified by:
6 // Created: 13/07/98
7 // RCS-ID: $Id$
8 // Copyright: (c) wxWidgets team
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #ifndef WX_PRECOMP
28 #include "wx/string.h"
29 #include "wx/log.h"
30 #include "wx/intl.h"
31 #include "wx/frame.h"
32 #include "wx/window.h"
33 #include "wx/control.h"
34 #include "wx/checkbox.h"
35 #include "wx/radiobut.h"
36 #include "wx/statbox.h"
37 #include "wx/textctrl.h"
38 #include "wx/settings.h"
39 #include "wx/dialog.h"
40 #include "wx/msgdlg.h"
41 #include "wx/msgout.h"
42 #include "wx/statusbr.h"
43 #include "wx/toolbar.h"
44 #include "wx/dcclient.h"
45 #include "wx/scrolbar.h"
46 #include "wx/layout.h"
47 #include "wx/sizer.h"
48 #include "wx/menu.h"
49 #endif //WX_PRECOMP
50
51 #if wxUSE_DRAG_AND_DROP
52 #include "wx/dnd.h"
53 #endif // wxUSE_DRAG_AND_DROP
54
55 #if wxUSE_ACCESSIBILITY
56 #include "wx/access.h"
57 #endif
58
59 #if wxUSE_HELP
60 #include "wx/cshelp.h"
61 #endif // wxUSE_HELP
62
63 #if wxUSE_TOOLTIPS
64 #include "wx/tooltip.h"
65 #endif // wxUSE_TOOLTIPS
66
67 #if wxUSE_CARET
68 #include "wx/caret.h"
69 #endif // wxUSE_CARET
70
71 #if wxUSE_SYSTEM_OPTIONS
72 #include "wx/sysopt.h"
73 #endif
74
75 #include "wx/platinfo.h"
76 #include "wx/private/window.h"
77
78 #ifdef __WXMSW__
79 #include "wx/msw/wrapwin.h"
80 #endif
81
82 // Windows List
83 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
84
85 // globals
86 #if wxUSE_MENUS
87 wxMenu *wxCurrentPopupMenu = NULL;
88 #endif // wxUSE_MENUS
89
90 // ----------------------------------------------------------------------------
91 // static data
92 // ----------------------------------------------------------------------------
93
94
95 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
96
97 // ----------------------------------------------------------------------------
98 // event table
99 // ----------------------------------------------------------------------------
100
101 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
102 EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
103 EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
104 EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
105
106 #if wxUSE_HELP
107 EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
108 #endif // wxUSE_HELP
109
110 EVT_SIZE(wxWindowBase::InternalOnSize)
111 END_EVENT_TABLE()
112
113 // ============================================================================
114 // implementation of the common functionality of the wxWindow class
115 // ============================================================================
116
117 // ----------------------------------------------------------------------------
118 // initialization
119 // ----------------------------------------------------------------------------
120
121 // the default initialization
122 wxWindowBase::wxWindowBase()
123 {
124 // no window yet, no parent nor children
125 m_parent = NULL;
126 m_windowId = wxID_ANY;
127
128 // no constraints on the minimal window size
129 m_minWidth =
130 m_maxWidth = wxDefaultCoord;
131 m_minHeight =
132 m_maxHeight = wxDefaultCoord;
133
134 // invalidiated cache value
135 m_bestSizeCache = wxDefaultSize;
136
137 // window are created enabled and visible by default
138 m_isShown =
139 m_isEnabled = true;
140
141 // the default event handler is just this window
142 m_eventHandler = this;
143
144 #if wxUSE_VALIDATORS
145 // no validator
146 m_windowValidator = NULL;
147 #endif // wxUSE_VALIDATORS
148
149 // the colours/fonts are default for now, so leave m_font,
150 // m_backgroundColour and m_foregroundColour uninitialized and set those
151 m_hasBgCol =
152 m_hasFgCol =
153 m_hasFont = false;
154 m_inheritBgCol =
155 m_inheritFgCol =
156 m_inheritFont = false;
157
158 // no style bits
159 m_exStyle =
160 m_windowStyle = 0;
161
162 m_backgroundStyle = wxBG_STYLE_ERASE;
163
164 #if wxUSE_CONSTRAINTS
165 // no constraints whatsoever
166 m_constraints = NULL;
167 m_constraintsInvolvedIn = NULL;
168 #endif // wxUSE_CONSTRAINTS
169
170 m_windowSizer = NULL;
171 m_containingSizer = NULL;
172 m_autoLayout = false;
173
174 #if wxUSE_DRAG_AND_DROP
175 m_dropTarget = NULL;
176 #endif // wxUSE_DRAG_AND_DROP
177
178 #if wxUSE_TOOLTIPS
179 m_tooltip = NULL;
180 #endif // wxUSE_TOOLTIPS
181
182 #if wxUSE_CARET
183 m_caret = NULL;
184 #endif // wxUSE_CARET
185
186 #if wxUSE_PALETTE
187 m_hasCustomPalette = false;
188 #endif // wxUSE_PALETTE
189
190 #if wxUSE_ACCESSIBILITY
191 m_accessible = NULL;
192 #endif
193
194 m_virtualSize = wxDefaultSize;
195
196 m_scrollHelper = NULL;
197
198 m_windowVariant = wxWINDOW_VARIANT_NORMAL;
199 #if wxUSE_SYSTEM_OPTIONS
200 if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
201 {
202 m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
203 }
204 #endif
205
206 // Whether we're using the current theme for this window (wxGTK only for now)
207 m_themeEnabled = false;
208
209 // This is set to true by SendDestroyEvent() which should be called by the
210 // most derived class to ensure that the destruction event is sent as soon
211 // as possible to allow its handlers to still see the undestroyed window
212 m_isBeingDeleted = false;
213
214 m_freezeCount = 0;
215 }
216
217 // common part of window creation process
218 bool wxWindowBase::CreateBase(wxWindowBase *parent,
219 wxWindowID id,
220 const wxPoint& WXUNUSED(pos),
221 const wxSize& size,
222 long style,
223 const wxString& name)
224 {
225 // ids are limited to 16 bits under MSW so if you care about portability,
226 // it's not a good idea to use ids out of this range (and negative ids are
227 // reserved for wxWidgets own usage)
228 wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
229 (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
230 wxT("invalid id value") );
231
232 // generate a new id if the user doesn't care about it
233 if ( id == wxID_ANY )
234 {
235 m_windowId = NewControlId();
236 }
237 else // valid id specified
238 {
239 m_windowId = id;
240 }
241
242 // don't use SetWindowStyleFlag() here, this function should only be called
243 // to change the flag after creation as it tries to reflect the changes in
244 // flags by updating the window dynamically and we don't need this here
245 m_windowStyle = style;
246
247 // assume the user doesn't want this window to shrink beneath its initial
248 // size, this worked like this in wxWidgets 2.8 and before and generally
249 // often makes sense for child windows (for top level ones it definitely
250 // does not as the user should be able to resize the window)
251 //
252 // note that we can't use IsTopLevel() from ctor
253 if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
254 SetMinSize(size);
255
256 SetName(name);
257 SetParent(parent);
258
259 return true;
260 }
261
262 bool wxWindowBase::CreateBase(wxWindowBase *parent,
263 wxWindowID id,
264 const wxPoint& pos,
265 const wxSize& size,
266 long style,
267 const wxValidator& wxVALIDATOR_PARAM(validator),
268 const wxString& name)
269 {
270 if ( !CreateBase(parent, id, pos, size, style, name) )
271 return false;
272
273 #if wxUSE_VALIDATORS
274 SetValidator(validator);
275 #endif // wxUSE_VALIDATORS
276
277 // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
278 // have it too - like this it's possible to set it only in the top level
279 // dialog/frame and all children will inherit it by defult
280 if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
281 {
282 SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
283 }
284
285 return true;
286 }
287
288 bool wxWindowBase::ToggleWindowStyle(int flag)
289 {
290 wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
291
292 bool rc;
293 long style = GetWindowStyleFlag();
294 if ( style & flag )
295 {
296 style &= ~flag;
297 rc = false;
298 }
299 else // currently off
300 {
301 style |= flag;
302 rc = true;
303 }
304
305 SetWindowStyleFlag(style);
306
307 return rc;
308 }
309
310 // ----------------------------------------------------------------------------
311 // destruction
312 // ----------------------------------------------------------------------------
313
314 // common clean up
315 wxWindowBase::~wxWindowBase()
316 {
317 wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
318
319 // FIXME if these 2 cases result from programming errors in the user code
320 // we should probably assert here instead of silently fixing them
321
322 // Just in case the window has been Closed, but we're then deleting
323 // immediately: don't leave dangling pointers.
324 wxPendingDelete.DeleteObject(this);
325
326 // Just in case we've loaded a top-level window via LoadNativeDialog but
327 // we weren't a dialog class
328 wxTopLevelWindows.DeleteObject((wxWindow*)this);
329
330 // Any additional event handlers should be popped before the window is
331 // deleted as otherwise the last handler will be left with a dangling
332 // pointer to this window result in a difficult to diagnose crash later on.
333 wxASSERT_MSG( GetEventHandler() == this,
334 wxT("any pushed event handlers must have been removed") );
335
336 #if wxUSE_MENUS
337 // The associated popup menu can still be alive, disassociate from it in
338 // this case
339 if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
340 wxCurrentPopupMenu->SetInvokingWindow(NULL);
341 #endif // wxUSE_MENUS
342
343 wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
344
345 // notify the parent about this window destruction
346 if ( m_parent )
347 m_parent->RemoveChild(this);
348
349 #if wxUSE_CARET
350 delete m_caret;
351 #endif // wxUSE_CARET
352
353 #if wxUSE_VALIDATORS
354 delete m_windowValidator;
355 #endif // wxUSE_VALIDATORS
356
357 #if wxUSE_CONSTRAINTS
358 // Have to delete constraints/sizer FIRST otherwise sizers may try to look
359 // at deleted windows as they delete themselves.
360 DeleteRelatedConstraints();
361
362 if ( m_constraints )
363 {
364 // This removes any dangling pointers to this window in other windows'
365 // constraintsInvolvedIn lists.
366 UnsetConstraints(m_constraints);
367 wxDELETE(m_constraints);
368 }
369 #endif // wxUSE_CONSTRAINTS
370
371 if ( m_containingSizer )
372 m_containingSizer->Detach( (wxWindow*)this );
373
374 delete m_windowSizer;
375
376 #if wxUSE_DRAG_AND_DROP
377 delete m_dropTarget;
378 #endif // wxUSE_DRAG_AND_DROP
379
380 #if wxUSE_TOOLTIPS
381 delete m_tooltip;
382 #endif // wxUSE_TOOLTIPS
383
384 #if wxUSE_ACCESSIBILITY
385 delete m_accessible;
386 #endif
387
388 #if wxUSE_HELP
389 // NB: this has to be called unconditionally, because we don't know
390 // whether this window has associated help text or not
391 wxHelpProvider *helpProvider = wxHelpProvider::Get();
392 if ( helpProvider )
393 helpProvider->RemoveHelp(this);
394 #endif
395 }
396
397 bool wxWindowBase::IsBeingDeleted() const
398 {
399 return m_isBeingDeleted ||
400 (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
401 }
402
403 void wxWindowBase::SendDestroyEvent()
404 {
405 if ( m_isBeingDeleted )
406 {
407 // we could have been already called from a more derived class dtor,
408 // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
409 // should be simply ignored
410 return;
411 }
412
413 m_isBeingDeleted = true;
414
415 wxWindowDestroyEvent event;
416 event.SetEventObject(this);
417 event.SetId(GetId());
418 GetEventHandler()->ProcessEvent(event);
419 }
420
421 bool wxWindowBase::Destroy()
422 {
423 SendDestroyEvent();
424
425 delete this;
426
427 return true;
428 }
429
430 bool wxWindowBase::Close(bool force)
431 {
432 wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
433 event.SetEventObject(this);
434 event.SetCanVeto(!force);
435
436 // return false if window wasn't closed because the application vetoed the
437 // close event
438 return HandleWindowEvent(event) && !event.GetVeto();
439 }
440
441 bool wxWindowBase::DestroyChildren()
442 {
443 wxWindowList::compatibility_iterator node;
444 for ( ;; )
445 {
446 // we iterate until the list becomes empty
447 node = GetChildren().GetFirst();
448 if ( !node )
449 break;
450
451 wxWindow *child = node->GetData();
452
453 // note that we really want to delete it immediately so don't call the
454 // possible overridden Destroy() version which might not delete the
455 // child immediately resulting in problems with our (top level) child
456 // outliving its parent
457 child->wxWindowBase::Destroy();
458
459 wxASSERT_MSG( !GetChildren().Find(child),
460 wxT("child didn't remove itself using RemoveChild()") );
461 }
462
463 return true;
464 }
465
466 // ----------------------------------------------------------------------------
467 // size/position related methods
468 // ----------------------------------------------------------------------------
469
470 // centre the window with respect to its parent in either (or both) directions
471 void wxWindowBase::DoCentre(int dir)
472 {
473 wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
474 wxT("this method only implements centering child windows") );
475
476 SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
477 }
478
479 // fits the window around the children
480 void wxWindowBase::Fit()
481 {
482 if ( !GetChildren().empty() )
483 {
484 SetSize(GetBestSize());
485 }
486 //else: do nothing if we have no children
487 }
488
489 // fits virtual size (ie. scrolled area etc.) around children
490 void wxWindowBase::FitInside()
491 {
492 if ( GetChildren().GetCount() > 0 )
493 {
494 SetVirtualSize( GetBestVirtualSize() );
495 }
496 }
497
498 // On Mac, scrollbars are explicitly children.
499 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
500 static bool wxHasRealChildren(const wxWindowBase* win)
501 {
502 int realChildCount = 0;
503
504 for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
505 node;
506 node = node->GetNext() )
507 {
508 wxWindow *win = node->GetData();
509 if ( !win->IsTopLevel() && win->IsShown()
510 #if wxUSE_SCROLLBAR
511 && !win->IsKindOf(CLASSINFO(wxScrollBar))
512 #endif
513 )
514 realChildCount ++;
515 }
516 return (realChildCount > 0);
517 }
518 #endif
519
520 void wxWindowBase::InvalidateBestSize()
521 {
522 m_bestSizeCache = wxDefaultSize;
523
524 // parent's best size calculation may depend on its children's
525 // as long as child window we are in is not top level window itself
526 // (because the TLW size is never resized automatically)
527 // so let's invalidate it as well to be safe:
528 if (m_parent && !IsTopLevel())
529 m_parent->InvalidateBestSize();
530 }
531
532 // return the size best suited for the current window
533 wxSize wxWindowBase::DoGetBestSize() const
534 {
535 wxSize best;
536
537 if ( m_windowSizer )
538 {
539 best = m_windowSizer->GetMinSize();
540 }
541 #if wxUSE_CONSTRAINTS
542 else if ( m_constraints )
543 {
544 wxConstCast(this, wxWindowBase)->SatisfyConstraints();
545
546 // our minimal acceptable size is such that all our windows fit inside
547 int maxX = 0,
548 maxY = 0;
549
550 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
551 node;
552 node = node->GetNext() )
553 {
554 wxLayoutConstraints *c = node->GetData()->GetConstraints();
555 if ( !c )
556 {
557 // it's not normal that we have an unconstrained child, but
558 // what can we do about it?
559 continue;
560 }
561
562 int x = c->right.GetValue(),
563 y = c->bottom.GetValue();
564
565 if ( x > maxX )
566 maxX = x;
567
568 if ( y > maxY )
569 maxY = y;
570
571 // TODO: we must calculate the overlaps somehow, otherwise we
572 // will never return a size bigger than the current one :-(
573 }
574
575 best = wxSize(maxX, maxY);
576 }
577 #endif // wxUSE_CONSTRAINTS
578 else if ( !GetChildren().empty()
579 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
580 && wxHasRealChildren(this)
581 #endif
582 )
583 {
584 // our minimal acceptable size is such that all our visible child
585 // windows fit inside
586 int maxX = 0,
587 maxY = 0;
588
589 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
590 node;
591 node = node->GetNext() )
592 {
593 wxWindow *win = node->GetData();
594 if ( win->IsTopLevel()
595 || !win->IsShown()
596 #if wxUSE_STATUSBAR
597 || wxDynamicCast(win, wxStatusBar)
598 #endif // wxUSE_STATUSBAR
599 )
600 {
601 // dialogs and frames lie in different top level windows -
602 // don't deal with them here; as for the status bars, they
603 // don't lie in the client area at all
604 continue;
605 }
606
607 int wx, wy, ww, wh;
608 win->GetPosition(&wx, &wy);
609
610 // if the window hadn't been positioned yet, assume that it is in
611 // the origin
612 if ( wx == wxDefaultCoord )
613 wx = 0;
614 if ( wy == wxDefaultCoord )
615 wy = 0;
616
617 win->GetSize(&ww, &wh);
618 if ( wx + ww > maxX )
619 maxX = wx + ww;
620 if ( wy + wh > maxY )
621 maxY = wy + wh;
622 }
623
624 best = wxSize(maxX, maxY);
625 }
626 else // ! has children
627 {
628 wxSize size = GetMinSize();
629 if ( !size.IsFullySpecified() )
630 {
631 // if the window doesn't define its best size we assume that it can
632 // be arbitrarily small -- usually this is not the case, of course,
633 // but we have no way to know what the limit is, it should really
634 // override DoGetBestClientSize() itself to tell us
635 size.SetDefaults(wxSize(1, 1));
636 }
637
638 // return as-is, unadjusted by the client size difference.
639 return size;
640 }
641
642 // Add any difference between size and client size
643 wxSize diff = GetSize() - GetClientSize();
644 best.x += wxMax(0, diff.x);
645 best.y += wxMax(0, diff.y);
646
647 return best;
648 }
649
650 // helper of GetWindowBorderSize(): as many ports don't implement support for
651 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
652 // fallbacks in this case
653 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
654 {
655 int rc = wxSystemSettings::GetMetric(
656 what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
657 if ( rc == -1 )
658 {
659 switch ( what )
660 {
661 case wxSYS_BORDER_X:
662 case wxSYS_BORDER_Y:
663 // 2D border is by default 1 pixel wide
664 rc = 1;
665 break;
666
667 case wxSYS_EDGE_X:
668 case wxSYS_EDGE_Y:
669 // 3D borders are by default 2 pixels
670 rc = 2;
671 break;
672
673 default:
674 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
675 rc = 0;
676 }
677 }
678
679 return rc;
680 }
681
682 wxSize wxWindowBase::GetWindowBorderSize() const
683 {
684 wxSize size;
685
686 switch ( GetBorder() )
687 {
688 case wxBORDER_NONE:
689 // nothing to do, size is already (0, 0)
690 break;
691
692 case wxBORDER_SIMPLE:
693 case wxBORDER_STATIC:
694 size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
695 size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
696 break;
697
698 case wxBORDER_SUNKEN:
699 case wxBORDER_RAISED:
700 size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
701 wxGetMetricOrDefault(wxSYS_BORDER_X, this));
702 size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
703 wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
704 break;
705
706 case wxBORDER_DOUBLE:
707 size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
708 wxGetMetricOrDefault(wxSYS_BORDER_X, this);
709 size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
710 wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
711 break;
712
713 default:
714 wxFAIL_MSG(wxT("Unknown border style."));
715 break;
716 }
717
718 // we have borders on both sides
719 return size*2;
720 }
721
722 wxSize wxWindowBase::GetEffectiveMinSize() const
723 {
724 // merge the best size with the min size, giving priority to the min size
725 wxSize min = GetMinSize();
726
727 if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
728 {
729 wxSize best = GetBestSize();
730 if (min.x == wxDefaultCoord) min.x = best.x;
731 if (min.y == wxDefaultCoord) min.y = best.y;
732 }
733
734 return min;
735 }
736
737 wxSize wxWindowBase::DoGetBorderSize() const
738 {
739 // there is one case in which we can implement it for all ports easily
740 if ( GetBorder() == wxBORDER_NONE )
741 return wxSize(0, 0);
742
743 // otherwise use the difference between the real size and the client size
744 // as a fallback: notice that this is incorrect in general as client size
745 // also doesn't take the scrollbars into account
746 return GetSize() - GetClientSize();
747 }
748
749 wxSize wxWindowBase::GetBestSize() const
750 {
751 if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
752 return m_bestSizeCache;
753
754 // call DoGetBestClientSize() first, if a derived class overrides it wants
755 // it to be used
756 wxSize size = DoGetBestClientSize();
757 if ( size != wxDefaultSize )
758 {
759 size += DoGetBorderSize();
760
761 CacheBestSize(size);
762 return size;
763 }
764
765 return DoGetBestSize();
766 }
767
768 void wxWindowBase::SetMinSize(const wxSize& minSize)
769 {
770 m_minWidth = minSize.x;
771 m_minHeight = minSize.y;
772 }
773
774 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
775 {
776 m_maxWidth = maxSize.x;
777 m_maxHeight = maxSize.y;
778 }
779
780 void wxWindowBase::SetInitialSize(const wxSize& size)
781 {
782 // Set the min size to the size passed in. This will usually either be
783 // wxDefaultSize or the size passed to this window's ctor/Create function.
784 SetMinSize(size);
785
786 // Merge the size with the best size if needed
787 wxSize best = GetEffectiveMinSize();
788
789 // If the current size doesn't match then change it
790 if (GetSize() != best)
791 SetSize(best);
792 }
793
794
795 // by default the origin is not shifted
796 wxPoint wxWindowBase::GetClientAreaOrigin() const
797 {
798 return wxPoint(0,0);
799 }
800
801 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
802 {
803 const wxSize diff(GetSize() - GetClientSize());
804
805 return wxSize(size.x == -1 ? -1 : size.x + diff.x,
806 size.y == -1 ? -1 : size.y + diff.y);
807 }
808
809 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
810 {
811 const wxSize diff(GetSize() - GetClientSize());
812
813 return wxSize(size.x == -1 ? -1 : size.x - diff.x,
814 size.y == -1 ? -1 : size.y - diff.y);
815 }
816
817 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
818 {
819 if ( m_windowVariant != variant )
820 {
821 m_windowVariant = variant;
822
823 DoSetWindowVariant(variant);
824 }
825 }
826
827 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
828 {
829 // adjust the font height to correspond to our new variant (notice that
830 // we're only called if something really changed)
831 wxFont font = GetFont();
832 int size = font.GetPointSize();
833 switch ( variant )
834 {
835 case wxWINDOW_VARIANT_NORMAL:
836 break;
837
838 case wxWINDOW_VARIANT_SMALL:
839 size = wxRound(size * 3.0 / 4.0);
840 break;
841
842 case wxWINDOW_VARIANT_MINI:
843 size = wxRound(size * 2.0 / 3.0);
844 break;
845
846 case wxWINDOW_VARIANT_LARGE:
847 size = wxRound(size * 5.0 / 4.0);
848 break;
849
850 default:
851 wxFAIL_MSG(wxT("unexpected window variant"));
852 break;
853 }
854
855 font.SetPointSize(size);
856 SetFont(font);
857 }
858
859 void wxWindowBase::DoSetSizeHints( int minW, int minH,
860 int maxW, int maxH,
861 int WXUNUSED(incW), int WXUNUSED(incH) )
862 {
863 wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
864 (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
865 wxT("min width/height must be less than max width/height!") );
866
867 m_minWidth = minW;
868 m_maxWidth = maxW;
869 m_minHeight = minH;
870 m_maxHeight = maxH;
871 }
872
873
874 #if WXWIN_COMPATIBILITY_2_8
875 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
876 int WXUNUSED(maxW), int WXUNUSED(maxH))
877 {
878 }
879
880 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
881 const wxSize& WXUNUSED(maxsize))
882 {
883 }
884 #endif // WXWIN_COMPATIBILITY_2_8
885
886 void wxWindowBase::DoSetVirtualSize( int x, int y )
887 {
888 m_virtualSize = wxSize(x, y);
889 }
890
891 wxSize wxWindowBase::DoGetVirtualSize() const
892 {
893 // we should use the entire client area so if it is greater than our
894 // virtual size, expand it to fit (otherwise if the window is big enough we
895 // wouldn't be using parts of it)
896 wxSize size = GetClientSize();
897 if ( m_virtualSize.x > size.x )
898 size.x = m_virtualSize.x;
899
900 if ( m_virtualSize.y >= size.y )
901 size.y = m_virtualSize.y;
902
903 return size;
904 }
905
906 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
907 {
908 // screen position is the same as (0, 0) in client coords for non TLWs (and
909 // TLWs override this method)
910 if ( x )
911 *x = 0;
912 if ( y )
913 *y = 0;
914
915 ClientToScreen(x, y);
916 }
917
918 void wxWindowBase::SendSizeEvent(int flags)
919 {
920 wxSizeEvent event(GetSize(), GetId());
921 event.SetEventObject(this);
922 if ( flags & wxSEND_EVENT_POST )
923 wxPostEvent(this, event);
924 else
925 HandleWindowEvent(event);
926 }
927
928 void wxWindowBase::SendSizeEventToParent(int flags)
929 {
930 wxWindow * const parent = GetParent();
931 if ( parent && !parent->IsBeingDeleted() )
932 parent->SendSizeEvent(flags);
933 }
934
935 bool wxWindowBase::HasScrollbar(int orient) const
936 {
937 // if scrolling in the given direction is disabled, we can't have the
938 // corresponding scrollbar no matter what
939 if ( !CanScroll(orient) )
940 return false;
941
942 const wxSize sizeVirt = GetVirtualSize();
943 const wxSize sizeClient = GetClientSize();
944
945 return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
946 : sizeVirt.y > sizeClient.y;
947 }
948
949 // ----------------------------------------------------------------------------
950 // show/hide/enable/disable the window
951 // ----------------------------------------------------------------------------
952
953 bool wxWindowBase::Show(bool show)
954 {
955 if ( show != m_isShown )
956 {
957 m_isShown = show;
958
959 return true;
960 }
961 else
962 {
963 return false;
964 }
965 }
966
967 bool wxWindowBase::IsEnabled() const
968 {
969 return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
970 }
971
972 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
973 {
974 // Under some platforms there is no need to update the window state
975 // explicitly, it will become disabled when its parent is. On other ones we
976 // do need to disable all windows recursively though.
977 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
978 DoEnable(enabled);
979 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
980
981 OnEnabled(enabled);
982
983 // Disabling a top level window is typically done when showing a modal
984 // dialog and we don't need to disable its children in this case, they will
985 // be logically disabled anyhow (i.e. their IsEnabled() will return false)
986 // and the TLW won't accept any input for them. Moreover, explicitly
987 // disabling them would look ugly as the entire TLW would be greyed out
988 // whenever a modal dialog is shown and no native applications under any
989 // platform behave like this.
990 if ( IsTopLevel() && !enabled )
991 return;
992
993 // When disabling (or enabling back) a non-TLW window we need to
994 // recursively propagate the change of the state to its children, otherwise
995 // they would still show as enabled even though they wouldn't actually
996 // accept any input (at least under MSW where children don't accept input
997 // if any of the windows in their parent chain is enabled).
998 //
999 // Notice that we must do this even for wxHAS_NATIVE_ENABLED_MANAGEMENT
1000 // platforms as we still need to call the children OnEnabled() recursively.
1001 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1002 node;
1003 node = node->GetNext() )
1004 {
1005 wxWindowBase * const child = node->GetData();
1006 if ( !child->IsTopLevel() && child->IsThisEnabled() )
1007 child->NotifyWindowOnEnableChange(enabled);
1008 }
1009 }
1010
1011 bool wxWindowBase::Enable(bool enable)
1012 {
1013 if ( enable == IsThisEnabled() )
1014 return false;
1015
1016 m_isEnabled = enable;
1017
1018 // If we call DoEnable() from NotifyWindowOnEnableChange(), we don't need
1019 // to do it from here.
1020 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
1021 DoEnable(enable);
1022 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1023
1024 NotifyWindowOnEnableChange(enable);
1025
1026 return true;
1027 }
1028
1029 bool wxWindowBase::IsShownOnScreen() const
1030 {
1031 // A window is shown on screen if it itself is shown and so are all its
1032 // parents. But if a window is toplevel one, then its always visible on
1033 // screen if IsShown() returns true, even if it has a hidden parent.
1034 return IsShown() &&
1035 (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1036 }
1037
1038 // ----------------------------------------------------------------------------
1039 // RTTI
1040 // ----------------------------------------------------------------------------
1041
1042 bool wxWindowBase::IsTopLevel() const
1043 {
1044 return false;
1045 }
1046
1047 // ----------------------------------------------------------------------------
1048 // Freeze/Thaw
1049 // ----------------------------------------------------------------------------
1050
1051 void wxWindowBase::Freeze()
1052 {
1053 if ( !m_freezeCount++ )
1054 {
1055 // physically freeze this window:
1056 DoFreeze();
1057
1058 // and recursively freeze all children:
1059 for ( wxWindowList::iterator i = GetChildren().begin();
1060 i != GetChildren().end(); ++i )
1061 {
1062 wxWindow *child = *i;
1063 if ( child->IsTopLevel() )
1064 continue;
1065
1066 child->Freeze();
1067 }
1068 }
1069 }
1070
1071 void wxWindowBase::Thaw()
1072 {
1073 wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1074
1075 if ( !--m_freezeCount )
1076 {
1077 // recursively thaw all children:
1078 for ( wxWindowList::iterator i = GetChildren().begin();
1079 i != GetChildren().end(); ++i )
1080 {
1081 wxWindow *child = *i;
1082 if ( child->IsTopLevel() )
1083 continue;
1084
1085 child->Thaw();
1086 }
1087
1088 // physically thaw this window:
1089 DoThaw();
1090 }
1091 }
1092
1093 // ----------------------------------------------------------------------------
1094 // reparenting the window
1095 // ----------------------------------------------------------------------------
1096
1097 void wxWindowBase::AddChild(wxWindowBase *child)
1098 {
1099 wxCHECK_RET( child, wxT("can't add a NULL child") );
1100
1101 // this should never happen and it will lead to a crash later if it does
1102 // because RemoveChild() will remove only one node from the children list
1103 // and the other(s) one(s) will be left with dangling pointers in them
1104 wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1105
1106 GetChildren().Append((wxWindow*)child);
1107 child->SetParent(this);
1108
1109 // adding a child while frozen will assert when thawed, so freeze it as if
1110 // it had been already present when we were frozen
1111 if ( IsFrozen() && !child->IsTopLevel() )
1112 child->Freeze();
1113 }
1114
1115 void wxWindowBase::RemoveChild(wxWindowBase *child)
1116 {
1117 wxCHECK_RET( child, wxT("can't remove a NULL child") );
1118
1119 // removing a child while frozen may result in permanently frozen window
1120 // if used e.g. from Reparent(), so thaw it
1121 //
1122 // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1123 // removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1124 if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1125 child->Thaw();
1126
1127 GetChildren().DeleteObject((wxWindow *)child);
1128 child->SetParent(NULL);
1129 }
1130
1131 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1132 {
1133 wxWindow *oldParent = GetParent();
1134 if ( newParent == oldParent )
1135 {
1136 // nothing done
1137 return false;
1138 }
1139
1140 const bool oldEnabledState = IsEnabled();
1141
1142 // unlink this window from the existing parent.
1143 if ( oldParent )
1144 {
1145 oldParent->RemoveChild(this);
1146 }
1147 else
1148 {
1149 wxTopLevelWindows.DeleteObject((wxWindow *)this);
1150 }
1151
1152 // add it to the new one
1153 if ( newParent )
1154 {
1155 newParent->AddChild(this);
1156 }
1157 else
1158 {
1159 wxTopLevelWindows.Append((wxWindow *)this);
1160 }
1161
1162 // We need to notify window (and its subwindows) if by changing the parent
1163 // we also change our enabled/disabled status.
1164 const bool newEnabledState = IsEnabled();
1165 if ( newEnabledState != oldEnabledState )
1166 {
1167 NotifyWindowOnEnableChange(newEnabledState);
1168 }
1169
1170 return true;
1171 }
1172
1173 // ----------------------------------------------------------------------------
1174 // event handler stuff
1175 // ----------------------------------------------------------------------------
1176
1177 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1178 {
1179 wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1180
1181 m_eventHandler = handler;
1182 }
1183
1184 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1185 {
1186 // disable wxEvtHandler chain mechanism for wxWindows:
1187 // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1188
1189 wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1190 }
1191 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1192 {
1193 // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1194 // handler of our stack when is destroyed will be Unlink()ed and thus
1195 // will call this function to update the pointer of this window...
1196
1197 //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1198 }
1199
1200 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1201 {
1202 wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1203
1204 // the new handler is going to be part of the wxWindow stack of event handlers:
1205 // it can't be part also of an event handler double-linked chain:
1206 wxASSERT_MSG(handlerToPush->IsUnlinked(),
1207 "The handler being pushed in the wxWindow stack shouldn't be part of "
1208 "a wxEvtHandler chain; call Unlink() on it first");
1209
1210 wxEvtHandler *handlerOld = GetEventHandler();
1211 wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1212
1213 // now use wxEvtHandler double-linked list to implement a stack:
1214 handlerToPush->SetNextHandler(handlerOld);
1215
1216 if (handlerOld != this)
1217 handlerOld->SetPreviousHandler(handlerToPush);
1218
1219 SetEventHandler(handlerToPush);
1220
1221 #if wxDEBUG_LEVEL
1222 // final checks of the operations done above:
1223 wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1224 "the first handler of the wxWindow stack should "
1225 "have no previous handlers set" );
1226 wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1227 "the first handler of the wxWindow stack should "
1228 "have non-NULL next handler" );
1229
1230 wxEvtHandler* pLast = handlerToPush;
1231 while ( pLast && pLast != this )
1232 pLast = pLast->GetNextHandler();
1233 wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1234 "the last handler of the wxWindow stack should "
1235 "have this window as next handler" );
1236 #endif // wxDEBUG_LEVEL
1237 }
1238
1239 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1240 {
1241 // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1242
1243 wxEvtHandler *firstHandler = GetEventHandler();
1244 wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1245 wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1246 wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1247 "the first handler of the wxWindow stack should have no previous handlers set" );
1248
1249 wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1250 wxCHECK_MSG( secondHandler != NULL, NULL,
1251 "the first handler of the wxWindow stack should have non-NULL next handler" );
1252
1253 firstHandler->SetNextHandler(NULL);
1254 secondHandler->SetPreviousHandler(NULL);
1255
1256 // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1257 SetEventHandler(secondHandler);
1258
1259 if ( deleteHandler )
1260 {
1261 wxDELETE(firstHandler);
1262 }
1263
1264 return firstHandler;
1265 }
1266
1267 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1268 {
1269 wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1270 wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1271
1272 if (handlerToRemove == GetEventHandler())
1273 {
1274 // removing the first event handler is equivalent to "popping" the stack
1275 PopEventHandler(false);
1276 return true;
1277 }
1278
1279 // NOTE: the wxWindow event handler list is always terminated with "this" handler
1280 wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1281 while ( handlerCur != this && handlerCur )
1282 {
1283 wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1284
1285 if ( handlerCur == handlerToRemove )
1286 {
1287 handlerCur->Unlink();
1288
1289 wxASSERT_MSG( handlerCur != GetEventHandler(),
1290 "the case Remove == Pop should was already handled" );
1291 return true;
1292 }
1293
1294 handlerCur = handlerNext;
1295 }
1296
1297 wxFAIL_MSG( wxT("where has the event handler gone?") );
1298
1299 return false;
1300 }
1301
1302 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1303 {
1304 // SafelyProcessEvent() will handle exceptions nicely
1305 return GetEventHandler()->SafelyProcessEvent(event);
1306 }
1307
1308 // ----------------------------------------------------------------------------
1309 // colours, fonts &c
1310 // ----------------------------------------------------------------------------
1311
1312 void wxWindowBase::InheritAttributes()
1313 {
1314 const wxWindowBase * const parent = GetParent();
1315 if ( !parent )
1316 return;
1317
1318 // we only inherit attributes which had been explicitly set for the parent
1319 // which ensures that this only happens if the user really wants it and
1320 // not by default which wouldn't make any sense in modern GUIs where the
1321 // controls don't all use the same fonts (nor colours)
1322 if ( parent->m_inheritFont && !m_hasFont )
1323 SetFont(parent->GetFont());
1324
1325 // in addition, there is a possibility to explicitly forbid inheriting
1326 // colours at each class level by overriding ShouldInheritColours()
1327 if ( ShouldInheritColours() )
1328 {
1329 if ( parent->m_inheritFgCol && !m_hasFgCol )
1330 SetForegroundColour(parent->GetForegroundColour());
1331
1332 // inheriting (solid) background colour is wrong as it totally breaks
1333 // any kind of themed backgrounds
1334 //
1335 // instead, the controls should use the same background as their parent
1336 // (ideally by not drawing it at all)
1337 #if 0
1338 if ( parent->m_inheritBgCol && !m_hasBgCol )
1339 SetBackgroundColour(parent->GetBackgroundColour());
1340 #endif // 0
1341 }
1342 }
1343
1344 /* static */ wxVisualAttributes
1345 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1346 {
1347 // it is important to return valid values for all attributes from here,
1348 // GetXXX() below rely on this
1349 wxVisualAttributes attrs;
1350 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1351 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1352
1353 // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1354 // the usual background colour than wxSYS_COLOUR_BTNFACE.
1355 // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1356 // colour on other platforms.
1357
1358 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1359 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1360 #else
1361 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1362 #endif
1363 return attrs;
1364 }
1365
1366 wxColour wxWindowBase::GetBackgroundColour() const
1367 {
1368 if ( !m_backgroundColour.IsOk() )
1369 {
1370 wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1371
1372 // get our default background colour
1373 wxColour colBg = GetDefaultAttributes().colBg;
1374
1375 // we must return some valid colour to avoid redoing this every time
1376 // and also to avoid surprising the applications written for older
1377 // wxWidgets versions where GetBackgroundColour() always returned
1378 // something -- so give them something even if it doesn't make sense
1379 // for this window (e.g. it has a themed background)
1380 if ( !colBg.Ok() )
1381 colBg = GetClassDefaultAttributes().colBg;
1382
1383 return colBg;
1384 }
1385 else
1386 return m_backgroundColour;
1387 }
1388
1389 wxColour wxWindowBase::GetForegroundColour() const
1390 {
1391 // logic is the same as above
1392 if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1393 {
1394 wxColour colFg = GetDefaultAttributes().colFg;
1395
1396 if ( !colFg.IsOk() )
1397 colFg = GetClassDefaultAttributes().colFg;
1398
1399 return colFg;
1400 }
1401 else
1402 return m_foregroundColour;
1403 }
1404
1405 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1406 {
1407 if ( colour == m_backgroundColour )
1408 return false;
1409
1410 m_hasBgCol = colour.IsOk();
1411
1412 m_inheritBgCol = m_hasBgCol;
1413 m_backgroundColour = colour;
1414 SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1415 return true;
1416 }
1417
1418 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1419 {
1420 if (colour == m_foregroundColour )
1421 return false;
1422
1423 m_hasFgCol = colour.IsOk();
1424 m_inheritFgCol = m_hasFgCol;
1425 m_foregroundColour = colour;
1426 SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1427 return true;
1428 }
1429
1430 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1431 {
1432 // setting an invalid cursor is ok, it means that we don't have any special
1433 // cursor
1434 if ( m_cursor.IsSameAs(cursor) )
1435 {
1436 // no change
1437 return false;
1438 }
1439
1440 m_cursor = cursor;
1441
1442 return true;
1443 }
1444
1445 wxFont wxWindowBase::GetFont() const
1446 {
1447 // logic is the same as in GetBackgroundColour()
1448 if ( !m_font.IsOk() )
1449 {
1450 wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1451
1452 wxFont font = GetDefaultAttributes().font;
1453 if ( !font.IsOk() )
1454 font = GetClassDefaultAttributes().font;
1455
1456 return font;
1457 }
1458 else
1459 return m_font;
1460 }
1461
1462 bool wxWindowBase::SetFont(const wxFont& font)
1463 {
1464 if ( font == m_font )
1465 {
1466 // no change
1467 return false;
1468 }
1469
1470 m_font = font;
1471 m_hasFont = font.IsOk();
1472 m_inheritFont = m_hasFont;
1473
1474 InvalidateBestSize();
1475
1476 return true;
1477 }
1478
1479 #if wxUSE_PALETTE
1480
1481 void wxWindowBase::SetPalette(const wxPalette& pal)
1482 {
1483 m_hasCustomPalette = true;
1484 m_palette = pal;
1485
1486 // VZ: can anyone explain me what do we do here?
1487 wxWindowDC d((wxWindow *) this);
1488 d.SetPalette(pal);
1489 }
1490
1491 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1492 {
1493 wxWindow *win = (wxWindow *)this;
1494 while ( win && !win->HasCustomPalette() )
1495 {
1496 win = win->GetParent();
1497 }
1498
1499 return win;
1500 }
1501
1502 #endif // wxUSE_PALETTE
1503
1504 #if wxUSE_CARET
1505 void wxWindowBase::SetCaret(wxCaret *caret)
1506 {
1507 if ( m_caret )
1508 {
1509 delete m_caret;
1510 }
1511
1512 m_caret = caret;
1513
1514 if ( m_caret )
1515 {
1516 wxASSERT_MSG( m_caret->GetWindow() == this,
1517 wxT("caret should be created associated to this window") );
1518 }
1519 }
1520 #endif // wxUSE_CARET
1521
1522 #if wxUSE_VALIDATORS
1523 // ----------------------------------------------------------------------------
1524 // validators
1525 // ----------------------------------------------------------------------------
1526
1527 void wxWindowBase::SetValidator(const wxValidator& validator)
1528 {
1529 if ( m_windowValidator )
1530 delete m_windowValidator;
1531
1532 m_windowValidator = (wxValidator *)validator.Clone();
1533
1534 if ( m_windowValidator )
1535 m_windowValidator->SetWindow(this);
1536 }
1537 #endif // wxUSE_VALIDATORS
1538
1539 // ----------------------------------------------------------------------------
1540 // update region stuff
1541 // ----------------------------------------------------------------------------
1542
1543 wxRect wxWindowBase::GetUpdateClientRect() const
1544 {
1545 wxRegion rgnUpdate = GetUpdateRegion();
1546 rgnUpdate.Intersect(GetClientRect());
1547 wxRect rectUpdate = rgnUpdate.GetBox();
1548 wxPoint ptOrigin = GetClientAreaOrigin();
1549 rectUpdate.x -= ptOrigin.x;
1550 rectUpdate.y -= ptOrigin.y;
1551
1552 return rectUpdate;
1553 }
1554
1555 bool wxWindowBase::DoIsExposed(int x, int y) const
1556 {
1557 return m_updateRegion.Contains(x, y) != wxOutRegion;
1558 }
1559
1560 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1561 {
1562 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1563 }
1564
1565 void wxWindowBase::ClearBackground()
1566 {
1567 // wxGTK uses its own version, no need to add never used code
1568 #ifndef __WXGTK__
1569 wxClientDC dc((wxWindow *)this);
1570 wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1571 dc.SetBackground(brush);
1572 dc.Clear();
1573 #endif // __WXGTK__
1574 }
1575
1576 // ----------------------------------------------------------------------------
1577 // find child window by id or name
1578 // ----------------------------------------------------------------------------
1579
1580 wxWindow *wxWindowBase::FindWindow(long id) const
1581 {
1582 if ( id == m_windowId )
1583 return (wxWindow *)this;
1584
1585 wxWindowBase *res = NULL;
1586 wxWindowList::compatibility_iterator node;
1587 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1588 {
1589 wxWindowBase *child = node->GetData();
1590 res = child->FindWindow( id );
1591 }
1592
1593 return (wxWindow *)res;
1594 }
1595
1596 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1597 {
1598 if ( name == m_windowName )
1599 return (wxWindow *)this;
1600
1601 wxWindowBase *res = NULL;
1602 wxWindowList::compatibility_iterator node;
1603 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1604 {
1605 wxWindow *child = node->GetData();
1606 res = child->FindWindow(name);
1607 }
1608
1609 return (wxWindow *)res;
1610 }
1611
1612
1613 // find any window by id or name or label: If parent is non-NULL, look through
1614 // children for a label or title matching the specified string. If NULL, look
1615 // through all top-level windows.
1616 //
1617 // to avoid duplicating code we reuse the same helper function but with
1618 // different comparators
1619
1620 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1621 const wxString& label, long id);
1622
1623 static
1624 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1625 long WXUNUSED(id))
1626 {
1627 return win->GetLabel() == label;
1628 }
1629
1630 static
1631 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1632 long WXUNUSED(id))
1633 {
1634 return win->GetName() == label;
1635 }
1636
1637 static
1638 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1639 long id)
1640 {
1641 return win->GetId() == id;
1642 }
1643
1644 // recursive helper for the FindWindowByXXX() functions
1645 static
1646 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1647 const wxString& label,
1648 long id,
1649 wxFindWindowCmp cmp)
1650 {
1651 if ( parent )
1652 {
1653 // see if this is the one we're looking for
1654 if ( (*cmp)(parent, label, id) )
1655 return (wxWindow *)parent;
1656
1657 // It wasn't, so check all its children
1658 for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1659 node;
1660 node = node->GetNext() )
1661 {
1662 // recursively check each child
1663 wxWindow *win = (wxWindow *)node->GetData();
1664 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1665 if (retwin)
1666 return retwin;
1667 }
1668 }
1669
1670 // Not found
1671 return NULL;
1672 }
1673
1674 // helper for FindWindowByXXX()
1675 static
1676 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1677 const wxString& label,
1678 long id,
1679 wxFindWindowCmp cmp)
1680 {
1681 if ( parent )
1682 {
1683 // just check parent and all its children
1684 return wxFindWindowRecursively(parent, label, id, cmp);
1685 }
1686
1687 // start at very top of wx's windows
1688 for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1689 node;
1690 node = node->GetNext() )
1691 {
1692 // recursively check each window & its children
1693 wxWindow *win = node->GetData();
1694 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1695 if (retwin)
1696 return retwin;
1697 }
1698
1699 return NULL;
1700 }
1701
1702 /* static */
1703 wxWindow *
1704 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1705 {
1706 return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1707 }
1708
1709 /* static */
1710 wxWindow *
1711 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1712 {
1713 wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1714
1715 if ( !win )
1716 {
1717 // fall back to the label
1718 win = FindWindowByLabel(title, parent);
1719 }
1720
1721 return win;
1722 }
1723
1724 /* static */
1725 wxWindow *
1726 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1727 {
1728 return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1729 }
1730
1731 // ----------------------------------------------------------------------------
1732 // dialog oriented functions
1733 // ----------------------------------------------------------------------------
1734
1735 void wxWindowBase::MakeModal(bool modal)
1736 {
1737 // Disable all other windows
1738 if ( IsTopLevel() )
1739 {
1740 wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1741 while (node)
1742 {
1743 wxWindow *win = node->GetData();
1744 if (win != this)
1745 win->Enable(!modal);
1746
1747 node = node->GetNext();
1748 }
1749 }
1750 }
1751
1752 bool wxWindowBase::Validate()
1753 {
1754 #if wxUSE_VALIDATORS
1755 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1756
1757 wxWindowList::compatibility_iterator node;
1758 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1759 {
1760 wxWindowBase *child = node->GetData();
1761 wxValidator *validator = child->GetValidator();
1762 if ( validator && !validator->Validate((wxWindow *)this) )
1763 {
1764 return false;
1765 }
1766
1767 if ( recurse && !child->Validate() )
1768 {
1769 return false;
1770 }
1771 }
1772 #endif // wxUSE_VALIDATORS
1773
1774 return true;
1775 }
1776
1777 bool wxWindowBase::TransferDataToWindow()
1778 {
1779 #if wxUSE_VALIDATORS
1780 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1781
1782 wxWindowList::compatibility_iterator node;
1783 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1784 {
1785 wxWindowBase *child = node->GetData();
1786 wxValidator *validator = child->GetValidator();
1787 if ( validator && !validator->TransferToWindow() )
1788 {
1789 wxLogWarning(_("Could not transfer data to window"));
1790 #if wxUSE_LOG
1791 wxLog::FlushActive();
1792 #endif // wxUSE_LOG
1793
1794 return false;
1795 }
1796
1797 if ( recurse )
1798 {
1799 if ( !child->TransferDataToWindow() )
1800 {
1801 // warning already given
1802 return false;
1803 }
1804 }
1805 }
1806 #endif // wxUSE_VALIDATORS
1807
1808 return true;
1809 }
1810
1811 bool wxWindowBase::TransferDataFromWindow()
1812 {
1813 #if wxUSE_VALIDATORS
1814 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1815
1816 wxWindowList::compatibility_iterator node;
1817 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1818 {
1819 wxWindow *child = node->GetData();
1820 wxValidator *validator = child->GetValidator();
1821 if ( validator && !validator->TransferFromWindow() )
1822 {
1823 // nop warning here because the application is supposed to give
1824 // one itself - we don't know here what might have gone wrongly
1825
1826 return false;
1827 }
1828
1829 if ( recurse )
1830 {
1831 if ( !child->TransferDataFromWindow() )
1832 {
1833 // warning already given
1834 return false;
1835 }
1836 }
1837 }
1838 #endif // wxUSE_VALIDATORS
1839
1840 return true;
1841 }
1842
1843 void wxWindowBase::InitDialog()
1844 {
1845 wxInitDialogEvent event(GetId());
1846 event.SetEventObject( this );
1847 GetEventHandler()->ProcessEvent(event);
1848 }
1849
1850 // ----------------------------------------------------------------------------
1851 // context-sensitive help support
1852 // ----------------------------------------------------------------------------
1853
1854 #if wxUSE_HELP
1855
1856 // associate this help text with this window
1857 void wxWindowBase::SetHelpText(const wxString& text)
1858 {
1859 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1860 if ( helpProvider )
1861 {
1862 helpProvider->AddHelp(this, text);
1863 }
1864 }
1865
1866 #if WXWIN_COMPATIBILITY_2_8
1867 // associate this help text with all windows with the same id as this
1868 // one
1869 void wxWindowBase::SetHelpTextForId(const wxString& text)
1870 {
1871 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1872 if ( helpProvider )
1873 {
1874 helpProvider->AddHelp(GetId(), text);
1875 }
1876 }
1877 #endif // WXWIN_COMPATIBILITY_2_8
1878
1879 // get the help string associated with this window (may be empty)
1880 // default implementation forwards calls to the help provider
1881 wxString
1882 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1883 wxHelpEvent::Origin WXUNUSED(origin)) const
1884 {
1885 wxString text;
1886 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1887 if ( helpProvider )
1888 {
1889 text = helpProvider->GetHelp(this);
1890 }
1891
1892 return text;
1893 }
1894
1895 // show help for this window
1896 void wxWindowBase::OnHelp(wxHelpEvent& event)
1897 {
1898 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1899 if ( helpProvider )
1900 {
1901 wxPoint pos = event.GetPosition();
1902 const wxHelpEvent::Origin origin = event.GetOrigin();
1903 if ( origin == wxHelpEvent::Origin_Keyboard )
1904 {
1905 // if the help event was generated from keyboard it shouldn't
1906 // appear at the mouse position (which is still the only position
1907 // associated with help event) if the mouse is far away, although
1908 // we still do use the mouse position if it's over the window
1909 // because we suppose the user looks approximately at the mouse
1910 // already and so it would be more convenient than showing tooltip
1911 // at some arbitrary position which can be quite far from it
1912 const wxRect rectClient = GetClientRect();
1913 if ( !rectClient.Contains(ScreenToClient(pos)) )
1914 {
1915 // position help slightly under and to the right of this window
1916 pos = ClientToScreen(wxPoint(
1917 2*GetCharWidth(),
1918 rectClient.height + GetCharHeight()
1919 ));
1920 }
1921 }
1922
1923 if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1924 {
1925 // skip the event.Skip() below
1926 return;
1927 }
1928 }
1929
1930 event.Skip();
1931 }
1932
1933 #endif // wxUSE_HELP
1934
1935 // ----------------------------------------------------------------------------
1936 // tooltips
1937 // ----------------------------------------------------------------------------
1938
1939 #if wxUSE_TOOLTIPS
1940
1941 wxString wxWindowBase::GetToolTipText() const
1942 {
1943 return m_tooltip ? m_tooltip->GetTip() : wxString();
1944 }
1945
1946 void wxWindowBase::SetToolTip( const wxString &tip )
1947 {
1948 // don't create the new tooltip if we already have one
1949 if ( m_tooltip )
1950 {
1951 m_tooltip->SetTip( tip );
1952 }
1953 else
1954 {
1955 SetToolTip( new wxToolTip( tip ) );
1956 }
1957
1958 // setting empty tooltip text does not remove the tooltip any more - use
1959 // SetToolTip(NULL) for this
1960 }
1961
1962 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1963 {
1964 if ( m_tooltip != tooltip )
1965 {
1966 if ( m_tooltip )
1967 delete m_tooltip;
1968
1969 m_tooltip = tooltip;
1970 }
1971 }
1972
1973 #endif // wxUSE_TOOLTIPS
1974
1975 // ----------------------------------------------------------------------------
1976 // constraints and sizers
1977 // ----------------------------------------------------------------------------
1978
1979 #if wxUSE_CONSTRAINTS
1980
1981 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1982 {
1983 if ( m_constraints )
1984 {
1985 UnsetConstraints(m_constraints);
1986 delete m_constraints;
1987 }
1988 m_constraints = constraints;
1989 if ( m_constraints )
1990 {
1991 // Make sure other windows know they're part of a 'meaningful relationship'
1992 if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1993 m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1994 if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1995 m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1996 if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1997 m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1998 if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1999 m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
2000 if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
2001 m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
2002 if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
2003 m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
2004 if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
2005 m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
2006 if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
2007 m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
2008 }
2009 }
2010
2011 // This removes any dangling pointers to this window in other windows'
2012 // constraintsInvolvedIn lists.
2013 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
2014 {
2015 if ( c )
2016 {
2017 if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2018 c->left.GetOtherWindow()->RemoveConstraintReference(this);
2019 if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2020 c->top.GetOtherWindow()->RemoveConstraintReference(this);
2021 if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
2022 c->right.GetOtherWindow()->RemoveConstraintReference(this);
2023 if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
2024 c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
2025 if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
2026 c->width.GetOtherWindow()->RemoveConstraintReference(this);
2027 if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
2028 c->height.GetOtherWindow()->RemoveConstraintReference(this);
2029 if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
2030 c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
2031 if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
2032 c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
2033 }
2034 }
2035
2036 // Back-pointer to other windows we're involved with, so if we delete this
2037 // window, we must delete any constraints we're involved with.
2038 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
2039 {
2040 if ( !m_constraintsInvolvedIn )
2041 m_constraintsInvolvedIn = new wxWindowList;
2042 if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
2043 m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
2044 }
2045
2046 // REMOVE back-pointer to other windows we're involved with.
2047 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
2048 {
2049 if ( m_constraintsInvolvedIn )
2050 m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2051 }
2052
2053 // Reset any constraints that mention this window
2054 void wxWindowBase::DeleteRelatedConstraints()
2055 {
2056 if ( m_constraintsInvolvedIn )
2057 {
2058 wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2059 while (node)
2060 {
2061 wxWindow *win = node->GetData();
2062 wxLayoutConstraints *constr = win->GetConstraints();
2063
2064 // Reset any constraints involving this window
2065 if ( constr )
2066 {
2067 constr->left.ResetIfWin(this);
2068 constr->top.ResetIfWin(this);
2069 constr->right.ResetIfWin(this);
2070 constr->bottom.ResetIfWin(this);
2071 constr->width.ResetIfWin(this);
2072 constr->height.ResetIfWin(this);
2073 constr->centreX.ResetIfWin(this);
2074 constr->centreY.ResetIfWin(this);
2075 }
2076
2077 wxWindowList::compatibility_iterator next = node->GetNext();
2078 m_constraintsInvolvedIn->Erase(node);
2079 node = next;
2080 }
2081
2082 wxDELETE(m_constraintsInvolvedIn);
2083 }
2084 }
2085
2086 #endif // wxUSE_CONSTRAINTS
2087
2088 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2089 {
2090 if ( sizer == m_windowSizer)
2091 return;
2092
2093 if ( m_windowSizer )
2094 {
2095 m_windowSizer->SetContainingWindow(NULL);
2096
2097 if ( deleteOld )
2098 delete m_windowSizer;
2099 }
2100
2101 m_windowSizer = sizer;
2102 if ( m_windowSizer )
2103 {
2104 m_windowSizer->SetContainingWindow((wxWindow *)this);
2105 }
2106
2107 SetAutoLayout(m_windowSizer != NULL);
2108 }
2109
2110 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2111 {
2112 SetSizer( sizer, deleteOld );
2113 sizer->SetSizeHints( (wxWindow*) this );
2114 }
2115
2116
2117 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2118 {
2119 // adding a window to a sizer twice is going to result in fatal and
2120 // hard to debug problems later because when deleting the second
2121 // associated wxSizerItem we're going to dereference a dangling
2122 // pointer; so try to detect this as early as possible
2123 wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2124 wxT("Adding a window to the same sizer twice?") );
2125
2126 m_containingSizer = sizer;
2127 }
2128
2129 #if wxUSE_CONSTRAINTS
2130
2131 void wxWindowBase::SatisfyConstraints()
2132 {
2133 wxLayoutConstraints *constr = GetConstraints();
2134 bool wasOk = constr && constr->AreSatisfied();
2135
2136 ResetConstraints(); // Mark all constraints as unevaluated
2137
2138 int noChanges = 1;
2139
2140 // if we're a top level panel (i.e. our parent is frame/dialog), our
2141 // own constraints will never be satisfied any more unless we do it
2142 // here
2143 if ( wasOk )
2144 {
2145 while ( noChanges > 0 )
2146 {
2147 LayoutPhase1(&noChanges);
2148 }
2149 }
2150
2151 LayoutPhase2(&noChanges);
2152 }
2153
2154 #endif // wxUSE_CONSTRAINTS
2155
2156 bool wxWindowBase::Layout()
2157 {
2158 // If there is a sizer, use it instead of the constraints
2159 if ( GetSizer() )
2160 {
2161 int w = 0, h = 0;
2162 GetVirtualSize(&w, &h);
2163 GetSizer()->SetDimension( 0, 0, w, h );
2164 }
2165 #if wxUSE_CONSTRAINTS
2166 else
2167 {
2168 SatisfyConstraints(); // Find the right constraints values
2169 SetConstraintSizes(); // Recursively set the real window sizes
2170 }
2171 #endif
2172
2173 return true;
2174 }
2175
2176 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2177 {
2178 if ( GetAutoLayout() )
2179 Layout();
2180
2181 event.Skip();
2182 }
2183
2184 #if wxUSE_CONSTRAINTS
2185
2186 // first phase of the constraints evaluation: set our own constraints
2187 bool wxWindowBase::LayoutPhase1(int *noChanges)
2188 {
2189 wxLayoutConstraints *constr = GetConstraints();
2190
2191 return !constr || constr->SatisfyConstraints(this, noChanges);
2192 }
2193
2194 // second phase: set the constraints for our children
2195 bool wxWindowBase::LayoutPhase2(int *noChanges)
2196 {
2197 *noChanges = 0;
2198
2199 // Layout children
2200 DoPhase(1);
2201
2202 // Layout grand children
2203 DoPhase(2);
2204
2205 return true;
2206 }
2207
2208 // Do a phase of evaluating child constraints
2209 bool wxWindowBase::DoPhase(int phase)
2210 {
2211 // the list containing the children for which the constraints are already
2212 // set correctly
2213 wxWindowList succeeded;
2214
2215 // the max number of iterations we loop before concluding that we can't set
2216 // the constraints
2217 static const int maxIterations = 500;
2218
2219 for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2220 {
2221 int noChanges = 0;
2222
2223 // loop over all children setting their constraints
2224 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2225 node;
2226 node = node->GetNext() )
2227 {
2228 wxWindow *child = node->GetData();
2229 if ( child->IsTopLevel() )
2230 {
2231 // top level children are not inside our client area
2232 continue;
2233 }
2234
2235 if ( !child->GetConstraints() || succeeded.Find(child) )
2236 {
2237 // this one is either already ok or nothing we can do about it
2238 continue;
2239 }
2240
2241 int tempNoChanges = 0;
2242 bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2243 : child->LayoutPhase2(&tempNoChanges);
2244 noChanges += tempNoChanges;
2245
2246 if ( success )
2247 {
2248 succeeded.Append(child);
2249 }
2250 }
2251
2252 if ( !noChanges )
2253 {
2254 // constraints are set
2255 break;
2256 }
2257 }
2258
2259 return true;
2260 }
2261
2262 void wxWindowBase::ResetConstraints()
2263 {
2264 wxLayoutConstraints *constr = GetConstraints();
2265 if ( constr )
2266 {
2267 constr->left.SetDone(false);
2268 constr->top.SetDone(false);
2269 constr->right.SetDone(false);
2270 constr->bottom.SetDone(false);
2271 constr->width.SetDone(false);
2272 constr->height.SetDone(false);
2273 constr->centreX.SetDone(false);
2274 constr->centreY.SetDone(false);
2275 }
2276
2277 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2278 while (node)
2279 {
2280 wxWindow *win = node->GetData();
2281 if ( !win->IsTopLevel() )
2282 win->ResetConstraints();
2283 node = node->GetNext();
2284 }
2285 }
2286
2287 // Need to distinguish between setting the 'fake' size for windows and sizers,
2288 // and setting the real values.
2289 void wxWindowBase::SetConstraintSizes(bool recurse)
2290 {
2291 wxLayoutConstraints *constr = GetConstraints();
2292 if ( constr && constr->AreSatisfied() )
2293 {
2294 int x = constr->left.GetValue();
2295 int y = constr->top.GetValue();
2296 int w = constr->width.GetValue();
2297 int h = constr->height.GetValue();
2298
2299 if ( (constr->width.GetRelationship() != wxAsIs ) ||
2300 (constr->height.GetRelationship() != wxAsIs) )
2301 {
2302 // We really shouldn't set negative sizes for the windows so make
2303 // them at least of 1*1 size
2304 SetSize(x, y, w > 0 ? w : 1, h > 0 ? h : 1);
2305 }
2306 else
2307 {
2308 // If we don't want to resize this window, just move it...
2309 Move(x, y);
2310 }
2311 }
2312 else if ( constr )
2313 {
2314 wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2315 GetClassInfo()->GetClassName(),
2316 GetName().c_str());
2317 }
2318
2319 if ( recurse )
2320 {
2321 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2322 while (node)
2323 {
2324 wxWindow *win = node->GetData();
2325 if ( !win->IsTopLevel() && win->GetConstraints() )
2326 win->SetConstraintSizes();
2327 node = node->GetNext();
2328 }
2329 }
2330 }
2331
2332 // Only set the size/position of the constraint (if any)
2333 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2334 {
2335 wxLayoutConstraints *constr = GetConstraints();
2336 if ( constr )
2337 {
2338 if ( x != wxDefaultCoord )
2339 {
2340 constr->left.SetValue(x);
2341 constr->left.SetDone(true);
2342 }
2343 if ( y != wxDefaultCoord )
2344 {
2345 constr->top.SetValue(y);
2346 constr->top.SetDone(true);
2347 }
2348 if ( w != wxDefaultCoord )
2349 {
2350 constr->width.SetValue(w);
2351 constr->width.SetDone(true);
2352 }
2353 if ( h != wxDefaultCoord )
2354 {
2355 constr->height.SetValue(h);
2356 constr->height.SetDone(true);
2357 }
2358 }
2359 }
2360
2361 void wxWindowBase::MoveConstraint(int x, int y)
2362 {
2363 wxLayoutConstraints *constr = GetConstraints();
2364 if ( constr )
2365 {
2366 if ( x != wxDefaultCoord )
2367 {
2368 constr->left.SetValue(x);
2369 constr->left.SetDone(true);
2370 }
2371 if ( y != wxDefaultCoord )
2372 {
2373 constr->top.SetValue(y);
2374 constr->top.SetDone(true);
2375 }
2376 }
2377 }
2378
2379 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2380 {
2381 wxLayoutConstraints *constr = GetConstraints();
2382 if ( constr )
2383 {
2384 *w = constr->width.GetValue();
2385 *h = constr->height.GetValue();
2386 }
2387 else
2388 GetSize(w, h);
2389 }
2390
2391 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2392 {
2393 wxLayoutConstraints *constr = GetConstraints();
2394 if ( constr )
2395 {
2396 *w = constr->width.GetValue();
2397 *h = constr->height.GetValue();
2398 }
2399 else
2400 GetClientSize(w, h);
2401 }
2402
2403 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2404 {
2405 wxLayoutConstraints *constr = GetConstraints();
2406 if ( constr )
2407 {
2408 *x = constr->left.GetValue();
2409 *y = constr->top.GetValue();
2410 }
2411 else
2412 GetPosition(x, y);
2413 }
2414
2415 #endif // wxUSE_CONSTRAINTS
2416
2417 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2418 {
2419 // don't do it for the dialogs/frames - they float independently of their
2420 // parent
2421 if ( !IsTopLevel() )
2422 {
2423 wxWindow *parent = GetParent();
2424 if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2425 {
2426 wxPoint pt(parent->GetClientAreaOrigin());
2427 x += pt.x;
2428 y += pt.y;
2429 }
2430 }
2431 }
2432
2433 // ----------------------------------------------------------------------------
2434 // Update UI processing
2435 // ----------------------------------------------------------------------------
2436
2437 void wxWindowBase::UpdateWindowUI(long flags)
2438 {
2439 wxUpdateUIEvent event(GetId());
2440 event.SetEventObject(this);
2441
2442 if ( GetEventHandler()->ProcessEvent(event) )
2443 {
2444 DoUpdateWindowUI(event);
2445 }
2446
2447 if (flags & wxUPDATE_UI_RECURSE)
2448 {
2449 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2450 while (node)
2451 {
2452 wxWindow* child = (wxWindow*) node->GetData();
2453 child->UpdateWindowUI(flags);
2454 node = node->GetNext();
2455 }
2456 }
2457 }
2458
2459 // do the window-specific processing after processing the update event
2460 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2461 {
2462 if ( event.GetSetEnabled() )
2463 Enable(event.GetEnabled());
2464
2465 if ( event.GetSetShown() )
2466 Show(event.GetShown());
2467 }
2468
2469 // ----------------------------------------------------------------------------
2470 // dialog units translations
2471 // ----------------------------------------------------------------------------
2472
2473 // Windows' computes dialog units using average character width over upper-
2474 // and lower-case ASCII alphabet and not using the average character width
2475 // metadata stored in the font; see
2476 // http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
2477 // It's important that we perform the conversion in identical way, because
2478 // dialog units natively exist only on Windows and Windows HIG is expressed
2479 // using them.
2480 wxSize wxWindowBase::GetDlgUnitBase() const
2481 {
2482 const wxWindowBase * const parent = wxGetTopLevelParent((wxWindow*)this);
2483
2484 if ( !parent->m_font.IsOk() )
2485 {
2486 // Default GUI font is used. This is the most common case, so
2487 // cache the results.
2488 static wxSize s_defFontSize;
2489 if ( s_defFontSize.x == 0 )
2490 s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent);
2491 return s_defFontSize;
2492 }
2493 else
2494 {
2495 // Custom font, we always need to compute the result
2496 return wxPrivate::GetAverageASCIILetterSize(*parent);
2497 }
2498 }
2499
2500 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const
2501 {
2502 const wxSize base = GetDlgUnitBase();
2503
2504 // NB: wxMulDivInt32() is used, because it correctly rounds the result
2505
2506 wxPoint pt2 = wxDefaultPosition;
2507 if (pt.x != wxDefaultCoord)
2508 pt2.x = wxMulDivInt32(pt.x, 4, base.x);
2509 if (pt.y != wxDefaultCoord)
2510 pt2.y = wxMulDivInt32(pt.y, 8, base.y);
2511
2512 return pt2;
2513 }
2514
2515 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const
2516 {
2517 const wxSize base = GetDlgUnitBase();
2518
2519 wxPoint pt2 = wxDefaultPosition;
2520 if (pt.x != wxDefaultCoord)
2521 pt2.x = wxMulDivInt32(pt.x, base.x, 4);
2522 if (pt.y != wxDefaultCoord)
2523 pt2.y = wxMulDivInt32(pt.y, base.y, 8);
2524
2525 return pt2;
2526 }
2527
2528 // ----------------------------------------------------------------------------
2529 // event handlers
2530 // ----------------------------------------------------------------------------
2531
2532 // propagate the colour change event to the subwindows
2533 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2534 {
2535 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2536 while ( node )
2537 {
2538 // Only propagate to non-top-level windows
2539 wxWindow *win = node->GetData();
2540 if ( !win->IsTopLevel() )
2541 {
2542 wxSysColourChangedEvent event2;
2543 event2.SetEventObject(win);
2544 win->GetEventHandler()->ProcessEvent(event2);
2545 }
2546
2547 node = node->GetNext();
2548 }
2549
2550 Refresh();
2551 }
2552
2553 // the default action is to populate dialog with data when it's created,
2554 // and nudge the UI into displaying itself correctly in case
2555 // we've turned the wxUpdateUIEvents frequency down low.
2556 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2557 {
2558 TransferDataToWindow();
2559
2560 // Update the UI at this point
2561 UpdateWindowUI(wxUPDATE_UI_RECURSE);
2562 }
2563
2564 // ----------------------------------------------------------------------------
2565 // menu-related functions
2566 // ----------------------------------------------------------------------------
2567
2568 #if wxUSE_MENUS
2569
2570 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2571 {
2572 wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2573
2574 wxMenuInvokingWindowSetter
2575 setInvokingWin(*menu, static_cast<wxWindow *>(this));
2576
2577 wxCurrentPopupMenu = menu;
2578 const bool rc = DoPopupMenu(menu, x, y);
2579 wxCurrentPopupMenu = NULL;
2580
2581 return rc;
2582 }
2583
2584 // this is used to pass the id of the selected item from the menu event handler
2585 // to the main function itself
2586 //
2587 // it's ok to use a global here as there can be at most one popup menu shown at
2588 // any time
2589 static int gs_popupMenuSelection = wxID_NONE;
2590
2591 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2592 {
2593 // store the id in a global variable where we'll retrieve it from later
2594 gs_popupMenuSelection = event.GetId();
2595 }
2596
2597 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2598 {
2599 // nothing to do but do not skip it
2600 }
2601
2602 int
2603 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2604 {
2605 gs_popupMenuSelection = wxID_NONE;
2606
2607 Connect(wxEVT_COMMAND_MENU_SELECTED,
2608 wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2609 NULL,
2610 this);
2611
2612 // it is common to construct the menu passed to this function dynamically
2613 // using some fixed range of ids which could clash with the ids used
2614 // elsewhere in the program, which could result in some menu items being
2615 // unintentionally disabled or otherwise modified by update UI handlers
2616 // elsewhere in the program code and this is difficult to avoid in the
2617 // program itself, so instead we just temporarily suspend UI updating while
2618 // this menu is shown
2619 Connect(wxEVT_UPDATE_UI,
2620 wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2621 NULL,
2622 this);
2623
2624 PopupMenu(&menu, x, y);
2625
2626 Disconnect(wxEVT_UPDATE_UI,
2627 wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2628 NULL,
2629 this);
2630 Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2631 wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2632 NULL,
2633 this);
2634
2635 return gs_popupMenuSelection;
2636 }
2637
2638 #endif // wxUSE_MENUS
2639
2640 // methods for drawing the sizers in a visible way: this is currently only
2641 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2642 // that well and also because we don't want to leave it enabled in default
2643 // builds used for production
2644 #if wxDEBUG_LEVEL > 1
2645
2646 static void DrawSizers(wxWindowBase *win);
2647
2648 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2649 {
2650 wxClientDC dc((wxWindow *)win);
2651 dc.SetPen(*pen);
2652 dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2653 *wxTRANSPARENT_BRUSH);
2654 dc.DrawRectangle(rect.Deflate(1, 1));
2655 }
2656
2657 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2658 {
2659 const wxSizerItemList& items = sizer->GetChildren();
2660 for ( wxSizerItemList::const_iterator i = items.begin(),
2661 end = items.end();
2662 i != end;
2663 ++i )
2664 {
2665 wxSizerItem *item = *i;
2666 if ( item->IsSizer() )
2667 {
2668 DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2669 DrawSizer(win, item->GetSizer());
2670 }
2671 else if ( item->IsSpacer() )
2672 {
2673 DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2674 }
2675 else if ( item->IsWindow() )
2676 {
2677 DrawSizers(item->GetWindow());
2678 }
2679 else
2680 wxFAIL_MSG("inconsistent wxSizerItem status!");
2681 }
2682 }
2683
2684 static void DrawSizers(wxWindowBase *win)
2685 {
2686 DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2687
2688 wxSizer *sizer = win->GetSizer();
2689 if ( sizer )
2690 {
2691 DrawSizer(win, sizer);
2692 }
2693 else // no sizer, still recurse into the children
2694 {
2695 const wxWindowList& children = win->GetChildren();
2696 for ( wxWindowList::const_iterator i = children.begin(),
2697 end = children.end();
2698 i != end;
2699 ++i )
2700 {
2701 DrawSizers(*i);
2702 }
2703
2704 // show all kind of sizes of this window; see the "window sizing" topic
2705 // overview for more info about the various differences:
2706 wxSize fullSz = win->GetSize();
2707 wxSize clientSz = win->GetClientSize();
2708 wxSize bestSz = win->GetBestSize();
2709 wxSize minSz = win->GetMinSize();
2710 wxSize maxSz = win->GetMaxSize();
2711 wxSize virtualSz = win->GetVirtualSize();
2712
2713 wxMessageOutputDebug dbgout;
2714 dbgout.Printf(
2715 "%-10s => fullsz=%4d;%-4d clientsz=%4d;%-4d bestsz=%4d;%-4d minsz=%4d;%-4d maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2716 win->GetName(),
2717 fullSz.x, fullSz.y,
2718 clientSz.x, clientSz.y,
2719 bestSz.x, bestSz.y,
2720 minSz.x, minSz.y,
2721 maxSz.x, maxSz.y,
2722 virtualSz.x, virtualSz.y);
2723 }
2724 }
2725
2726 #endif // wxDEBUG_LEVEL
2727
2728 // process special middle clicks
2729 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2730 {
2731 if ( event.ControlDown() && event.AltDown() )
2732 {
2733 #if wxDEBUG_LEVEL > 1
2734 // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2735 if ( event.ShiftDown() )
2736 {
2737 DrawSizers(this);
2738 }
2739 else
2740 #endif // __WXDEBUG__
2741 {
2742 #if wxUSE_MSGDLG
2743 // just Ctrl-Alt-middle click shows information about wx version
2744 ::wxInfoMessageBox((wxWindow*)this);
2745 #endif // wxUSE_MSGDLG
2746 }
2747 }
2748 else
2749 {
2750 event.Skip();
2751 }
2752 }
2753
2754 // ----------------------------------------------------------------------------
2755 // accessibility
2756 // ----------------------------------------------------------------------------
2757
2758 #if wxUSE_ACCESSIBILITY
2759 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2760 {
2761 if (m_accessible && (accessible != m_accessible))
2762 delete m_accessible;
2763 m_accessible = accessible;
2764 if (m_accessible)
2765 m_accessible->SetWindow((wxWindow*) this);
2766 }
2767
2768 // Returns the accessible object, creating if necessary.
2769 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2770 {
2771 if (!m_accessible)
2772 m_accessible = CreateAccessible();
2773 return m_accessible;
2774 }
2775
2776 // Override to create a specific accessible object.
2777 wxAccessible* wxWindowBase::CreateAccessible()
2778 {
2779 return new wxWindowAccessible((wxWindow*) this);
2780 }
2781
2782 #endif
2783
2784 // ----------------------------------------------------------------------------
2785 // list classes implementation
2786 // ----------------------------------------------------------------------------
2787
2788 #if wxUSE_STL
2789
2790 #include "wx/listimpl.cpp"
2791 WX_DEFINE_LIST(wxWindowList)
2792
2793 #else // !wxUSE_STL
2794
2795 void wxWindowListNode::DeleteData()
2796 {
2797 delete (wxWindow *)GetData();
2798 }
2799
2800 #endif // wxUSE_STL/!wxUSE_STL
2801
2802 // ----------------------------------------------------------------------------
2803 // borders
2804 // ----------------------------------------------------------------------------
2805
2806 wxBorder wxWindowBase::GetBorder(long flags) const
2807 {
2808 wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2809 if ( border == wxBORDER_DEFAULT )
2810 {
2811 border = GetDefaultBorder();
2812 }
2813 else if ( border == wxBORDER_THEME )
2814 {
2815 border = GetDefaultBorderForControl();
2816 }
2817
2818 return border;
2819 }
2820
2821 wxBorder wxWindowBase::GetDefaultBorder() const
2822 {
2823 return wxBORDER_NONE;
2824 }
2825
2826 // ----------------------------------------------------------------------------
2827 // hit testing
2828 // ----------------------------------------------------------------------------
2829
2830 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2831 {
2832 // here we just check if the point is inside the window or not
2833
2834 // check the top and left border first
2835 bool outside = x < 0 || y < 0;
2836 if ( !outside )
2837 {
2838 // check the right and bottom borders too
2839 wxSize size = GetSize();
2840 outside = x >= size.x || y >= size.y;
2841 }
2842
2843 return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2844 }
2845
2846 // ----------------------------------------------------------------------------
2847 // mouse capture
2848 // ----------------------------------------------------------------------------
2849
2850 struct WXDLLEXPORT wxWindowNext
2851 {
2852 wxWindow *win;
2853 wxWindowNext *next;
2854 } *wxWindowBase::ms_winCaptureNext = NULL;
2855 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2856 bool wxWindowBase::ms_winCaptureChanging = false;
2857
2858 void wxWindowBase::CaptureMouse()
2859 {
2860 wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2861
2862 wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2863
2864 ms_winCaptureChanging = true;
2865
2866 wxWindow *winOld = GetCapture();
2867 if ( winOld )
2868 {
2869 ((wxWindowBase*) winOld)->DoReleaseMouse();
2870
2871 // save it on stack
2872 wxWindowNext *item = new wxWindowNext;
2873 item->win = winOld;
2874 item->next = ms_winCaptureNext;
2875 ms_winCaptureNext = item;
2876 }
2877 //else: no mouse capture to save
2878
2879 DoCaptureMouse();
2880 ms_winCaptureCurrent = (wxWindow*)this;
2881
2882 ms_winCaptureChanging = false;
2883 }
2884
2885 void wxWindowBase::ReleaseMouse()
2886 {
2887 wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2888
2889 wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2890
2891 wxASSERT_MSG( GetCapture() == this,
2892 "attempt to release mouse, but this window hasn't captured it" );
2893 wxASSERT_MSG( ms_winCaptureCurrent == this,
2894 "attempt to release mouse, but this window hasn't captured it" );
2895
2896 ms_winCaptureChanging = true;
2897
2898 DoReleaseMouse();
2899 ms_winCaptureCurrent = NULL;
2900
2901 if ( ms_winCaptureNext )
2902 {
2903 ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2904 ms_winCaptureCurrent = ms_winCaptureNext->win;
2905
2906 wxWindowNext *item = ms_winCaptureNext;
2907 ms_winCaptureNext = item->next;
2908 delete item;
2909 }
2910 //else: stack is empty, no previous capture
2911
2912 ms_winCaptureChanging = false;
2913
2914 wxLogTrace(wxT("mousecapture"),
2915 (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2916 static_cast<void*>(GetCapture()));
2917 }
2918
2919 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2920 {
2921 wxMouseCaptureLostEvent event(win->GetId());
2922 event.SetEventObject(win);
2923 if ( !win->GetEventHandler()->ProcessEvent(event) )
2924 {
2925 // windows must handle this event, otherwise the app wouldn't behave
2926 // correctly if it loses capture unexpectedly; see the discussion here:
2927 // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2928 // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2929 wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2930 }
2931 }
2932
2933 /* static */
2934 void wxWindowBase::NotifyCaptureLost()
2935 {
2936 // don't do anything if capture lost was expected, i.e. resulted from
2937 // a wx call to ReleaseMouse or CaptureMouse:
2938 if ( ms_winCaptureChanging )
2939 return;
2940
2941 // if the capture was lost unexpectedly, notify every window that has
2942 // capture (on stack or current) about it and clear the stack:
2943
2944 if ( ms_winCaptureCurrent )
2945 {
2946 DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2947 ms_winCaptureCurrent = NULL;
2948 }
2949
2950 while ( ms_winCaptureNext )
2951 {
2952 wxWindowNext *item = ms_winCaptureNext;
2953 ms_winCaptureNext = item->next;
2954
2955 DoNotifyWindowAboutCaptureLost(item->win);
2956
2957 delete item;
2958 }
2959 }
2960
2961 #if wxUSE_HOTKEY
2962
2963 bool
2964 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2965 int WXUNUSED(modifiers),
2966 int WXUNUSED(keycode))
2967 {
2968 // not implemented
2969 return false;
2970 }
2971
2972 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2973 {
2974 // not implemented
2975 return false;
2976 }
2977
2978 #endif // wxUSE_HOTKEY
2979
2980 // ----------------------------------------------------------------------------
2981 // event processing
2982 // ----------------------------------------------------------------------------
2983
2984 bool wxWindowBase::TryBefore(wxEvent& event)
2985 {
2986 #if wxUSE_VALIDATORS
2987 // Can only use the validator of the window which
2988 // is receiving the event
2989 if ( event.GetEventObject() == this )
2990 {
2991 wxValidator * const validator = GetValidator();
2992 if ( validator && validator->ProcessEventLocally(event) )
2993 {
2994 return true;
2995 }
2996 }
2997 #endif // wxUSE_VALIDATORS
2998
2999 return wxEvtHandler::TryBefore(event);
3000 }
3001
3002 bool wxWindowBase::TryAfter(wxEvent& event)
3003 {
3004 // carry on up the parent-child hierarchy if the propagation count hasn't
3005 // reached zero yet
3006 if ( event.ShouldPropagate() )
3007 {
3008 // honour the requests to stop propagation at this window: this is
3009 // used by the dialogs, for example, to prevent processing the events
3010 // from the dialog controls in the parent frame which rarely, if ever,
3011 // makes sense
3012 if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
3013 {
3014 wxWindow *parent = GetParent();
3015 if ( parent && !parent->IsBeingDeleted() )
3016 {
3017 wxPropagateOnce propagateOnce(event);
3018
3019 return parent->GetEventHandler()->ProcessEvent(event);
3020 }
3021 }
3022 }
3023
3024 return wxEvtHandler::TryAfter(event);
3025 }
3026
3027 // ----------------------------------------------------------------------------
3028 // window relationships
3029 // ----------------------------------------------------------------------------
3030
3031 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
3032 {
3033 wxCHECK_MSG( GetParent(), NULL,
3034 wxT("GetPrev/NextSibling() don't work for TLWs!") );
3035
3036 wxWindowList& siblings = GetParent()->GetChildren();
3037 wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
3038 wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
3039
3040 if ( order == OrderBefore )
3041 i = i->GetPrevious();
3042 else // OrderAfter
3043 i = i->GetNext();
3044
3045 return i ? i->GetData() : NULL;
3046 }
3047
3048 // ----------------------------------------------------------------------------
3049 // keyboard navigation
3050 // ----------------------------------------------------------------------------
3051
3052 // Navigates in the specified direction inside this window
3053 bool wxWindowBase::DoNavigateIn(int flags)
3054 {
3055 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
3056 // native code doesn't process our wxNavigationKeyEvents anyhow
3057 wxUnusedVar(flags);
3058 return false;
3059 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
3060 wxNavigationKeyEvent eventNav;
3061 wxWindow *focused = FindFocus();
3062 eventNav.SetCurrentFocus(focused);
3063 eventNav.SetEventObject(focused);
3064 eventNav.SetFlags(flags);
3065 return GetEventHandler()->ProcessEvent(eventNav);
3066 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3067 }
3068
3069 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3070 {
3071 if ( event.GetKeyCode() != WXK_TAB )
3072 return false;
3073
3074 int flags = wxNavigationKeyEvent::FromTab;
3075
3076 if ( event.ShiftDown() )
3077 flags |= wxNavigationKeyEvent::IsBackward;
3078 else
3079 flags |= wxNavigationKeyEvent::IsForward;
3080
3081 if ( event.ControlDown() )
3082 flags |= wxNavigationKeyEvent::WinChange;
3083
3084 Navigate(flags);
3085 return true;
3086 }
3087
3088 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3089 {
3090 // check that we're not a top level window
3091 wxCHECK_RET( GetParent(),
3092 wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3093
3094 // detect the special case when we have nothing to do anyhow and when the
3095 // code below wouldn't work
3096 if ( win == this )
3097 return;
3098
3099 // find the target window in the siblings list
3100 wxWindowList& siblings = GetParent()->GetChildren();
3101 wxWindowList::compatibility_iterator i = siblings.Find(win);
3102 wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3103
3104 // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3105 // can't just move the node around
3106 wxWindow *self = (wxWindow *)this;
3107 siblings.DeleteObject(self);
3108 if ( move == OrderAfter )
3109 {
3110 i = i->GetNext();
3111 }
3112
3113 if ( i )
3114 {
3115 siblings.Insert(i, self);
3116 }
3117 else // OrderAfter and win was the last sibling
3118 {
3119 siblings.Append(self);
3120 }
3121 }
3122
3123 // ----------------------------------------------------------------------------
3124 // focus handling
3125 // ----------------------------------------------------------------------------
3126
3127 /*static*/ wxWindow* wxWindowBase::FindFocus()
3128 {
3129 wxWindowBase *win = DoFindFocus();
3130 return win ? win->GetMainWindowOfCompositeControl() : NULL;
3131 }
3132
3133 bool wxWindowBase::HasFocus() const
3134 {
3135 wxWindowBase *win = DoFindFocus();
3136 return win == this ||
3137 win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3138 }
3139
3140 // ----------------------------------------------------------------------------
3141 // drag and drop
3142 // ----------------------------------------------------------------------------
3143
3144 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3145
3146 namespace
3147 {
3148
3149 class DragAcceptFilesTarget : public wxFileDropTarget
3150 {
3151 public:
3152 DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3153
3154 virtual bool OnDropFiles(wxCoord x, wxCoord y,
3155 const wxArrayString& filenames)
3156 {
3157 wxDropFilesEvent event(wxEVT_DROP_FILES,
3158 filenames.size(),
3159 wxCArrayString(filenames).Release());
3160 event.SetEventObject(m_win);
3161 event.m_pos.x = x;
3162 event.m_pos.y = y;
3163
3164 return m_win->HandleWindowEvent(event);
3165 }
3166
3167 private:
3168 wxWindowBase * const m_win;
3169
3170 wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3171 };
3172
3173
3174 } // anonymous namespace
3175
3176 // Generic version of DragAcceptFiles(). It works by installing a simple
3177 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3178 // together with explicit SetDropTarget() calls.
3179 void wxWindowBase::DragAcceptFiles(bool accept)
3180 {
3181 if ( accept )
3182 {
3183 wxASSERT_MSG( !GetDropTarget(),
3184 "cannot use DragAcceptFiles() and SetDropTarget() together" );
3185 SetDropTarget(new DragAcceptFilesTarget(this));
3186 }
3187 else
3188 {
3189 SetDropTarget(NULL);
3190 }
3191 }
3192
3193 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3194
3195 // ----------------------------------------------------------------------------
3196 // global functions
3197 // ----------------------------------------------------------------------------
3198
3199 wxWindow* wxGetTopLevelParent(wxWindow *win)
3200 {
3201 while ( win && !win->IsTopLevel() )
3202 win = win->GetParent();
3203
3204 return win;
3205 }
3206
3207 #if wxUSE_ACCESSIBILITY
3208 // ----------------------------------------------------------------------------
3209 // accessible object for windows
3210 // ----------------------------------------------------------------------------
3211
3212 // Can return either a child object, or an integer
3213 // representing the child element, starting from 1.
3214 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3215 {
3216 wxASSERT( GetWindow() != NULL );
3217 if (!GetWindow())
3218 return wxACC_FAIL;
3219
3220 return wxACC_NOT_IMPLEMENTED;
3221 }
3222
3223 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3224 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3225 {
3226 wxASSERT( GetWindow() != NULL );
3227 if (!GetWindow())
3228 return wxACC_FAIL;
3229
3230 wxWindow* win = NULL;
3231 if (elementId == 0)
3232 {
3233 win = GetWindow();
3234 }
3235 else
3236 {
3237 if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3238 {
3239 win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3240 }
3241 else
3242 return wxACC_FAIL;
3243 }
3244 if (win)
3245 {
3246 rect = win->GetRect();
3247 if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3248 rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3249 return wxACC_OK;
3250 }
3251
3252 return wxACC_NOT_IMPLEMENTED;
3253 }
3254
3255 // Navigates from fromId to toId/toObject.
3256 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3257 int* WXUNUSED(toId), wxAccessible** toObject)
3258 {
3259 wxASSERT( GetWindow() != NULL );
3260 if (!GetWindow())
3261 return wxACC_FAIL;
3262
3263 switch (navDir)
3264 {
3265 case wxNAVDIR_FIRSTCHILD:
3266 {
3267 if (GetWindow()->GetChildren().GetCount() == 0)
3268 return wxACC_FALSE;
3269 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3270 *toObject = childWindow->GetOrCreateAccessible();
3271
3272 return wxACC_OK;
3273 }
3274 case wxNAVDIR_LASTCHILD:
3275 {
3276 if (GetWindow()->GetChildren().GetCount() == 0)
3277 return wxACC_FALSE;
3278 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3279 *toObject = childWindow->GetOrCreateAccessible();
3280
3281 return wxACC_OK;
3282 }
3283 case wxNAVDIR_RIGHT:
3284 case wxNAVDIR_DOWN:
3285 case wxNAVDIR_NEXT:
3286 {
3287 wxWindowList::compatibility_iterator node =
3288 wxWindowList::compatibility_iterator();
3289 if (fromId == 0)
3290 {
3291 // Can't navigate to sibling of this window
3292 // if we're a top-level window.
3293 if (!GetWindow()->GetParent())
3294 return wxACC_NOT_IMPLEMENTED;
3295
3296 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3297 }
3298 else
3299 {
3300 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3301 node = GetWindow()->GetChildren().Item(fromId-1);
3302 }
3303
3304 if (node && node->GetNext())
3305 {
3306 wxWindow* nextWindow = node->GetNext()->GetData();
3307 *toObject = nextWindow->GetOrCreateAccessible();
3308 return wxACC_OK;
3309 }
3310 else
3311 return wxACC_FALSE;
3312 }
3313 case wxNAVDIR_LEFT:
3314 case wxNAVDIR_UP:
3315 case wxNAVDIR_PREVIOUS:
3316 {
3317 wxWindowList::compatibility_iterator node =
3318 wxWindowList::compatibility_iterator();
3319 if (fromId == 0)
3320 {
3321 // Can't navigate to sibling of this window
3322 // if we're a top-level window.
3323 if (!GetWindow()->GetParent())
3324 return wxACC_NOT_IMPLEMENTED;
3325
3326 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3327 }
3328 else
3329 {
3330 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3331 node = GetWindow()->GetChildren().Item(fromId-1);
3332 }
3333
3334 if (node && node->GetPrevious())
3335 {
3336 wxWindow* previousWindow = node->GetPrevious()->GetData();
3337 *toObject = previousWindow->GetOrCreateAccessible();
3338 return wxACC_OK;
3339 }
3340 else
3341 return wxACC_FALSE;
3342 }
3343 }
3344
3345 return wxACC_NOT_IMPLEMENTED;
3346 }
3347
3348 // Gets the name of the specified object.
3349 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3350 {
3351 wxASSERT( GetWindow() != NULL );
3352 if (!GetWindow())
3353 return wxACC_FAIL;
3354
3355 wxString title;
3356
3357 // If a child, leave wxWidgets to call the function on the actual
3358 // child object.
3359 if (childId > 0)
3360 return wxACC_NOT_IMPLEMENTED;
3361
3362 // This will eventually be replaced by specialised
3363 // accessible classes, one for each kind of wxWidgets
3364 // control or window.
3365 #if wxUSE_BUTTON
3366 if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3367 title = ((wxButton*) GetWindow())->GetLabel();
3368 else
3369 #endif
3370 title = GetWindow()->GetName();
3371
3372 if (!title.empty())
3373 {
3374 *name = title;
3375 return wxACC_OK;
3376 }
3377 else
3378 return wxACC_NOT_IMPLEMENTED;
3379 }
3380
3381 // Gets the number of children.
3382 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3383 {
3384 wxASSERT( GetWindow() != NULL );
3385 if (!GetWindow())
3386 return wxACC_FAIL;
3387
3388 *childId = (int) GetWindow()->GetChildren().GetCount();
3389 return wxACC_OK;
3390 }
3391
3392 // Gets the specified child (starting from 1).
3393 // If *child is NULL and return value is wxACC_OK,
3394 // this means that the child is a simple element and
3395 // not an accessible object.
3396 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3397 {
3398 wxASSERT( GetWindow() != NULL );
3399 if (!GetWindow())
3400 return wxACC_FAIL;
3401
3402 if (childId == 0)
3403 {
3404 *child = this;
3405 return wxACC_OK;
3406 }
3407
3408 if (childId > (int) GetWindow()->GetChildren().GetCount())
3409 return wxACC_FAIL;
3410
3411 wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3412 *child = childWindow->GetOrCreateAccessible();
3413 if (*child)
3414 return wxACC_OK;
3415 else
3416 return wxACC_FAIL;
3417 }
3418
3419 // Gets the parent, or NULL.
3420 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3421 {
3422 wxASSERT( GetWindow() != NULL );
3423 if (!GetWindow())
3424 return wxACC_FAIL;
3425
3426 wxWindow* parentWindow = GetWindow()->GetParent();
3427 if (!parentWindow)
3428 {
3429 *parent = NULL;
3430 return wxACC_OK;
3431 }
3432 else
3433 {
3434 *parent = parentWindow->GetOrCreateAccessible();
3435 if (*parent)
3436 return wxACC_OK;
3437 else
3438 return wxACC_FAIL;
3439 }
3440 }
3441
3442 // Performs the default action. childId is 0 (the action for this object)
3443 // or > 0 (the action for a child).
3444 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3445 // window (e.g. an edit control).
3446 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3447 {
3448 wxASSERT( GetWindow() != NULL );
3449 if (!GetWindow())
3450 return wxACC_FAIL;
3451
3452 return wxACC_NOT_IMPLEMENTED;
3453 }
3454
3455 // Gets the default action for this object (0) or > 0 (the action for a child).
3456 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3457 // string if there is no action.
3458 // The retrieved string describes the action that is performed on an object,
3459 // not what the object does as a result. For example, a toolbar button that prints
3460 // a document has a default action of "Press" rather than "Prints the current document."
3461 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3462 {
3463 wxASSERT( GetWindow() != NULL );
3464 if (!GetWindow())
3465 return wxACC_FAIL;
3466
3467 return wxACC_NOT_IMPLEMENTED;
3468 }
3469
3470 // Returns the description for this object or a child.
3471 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3472 {
3473 wxASSERT( GetWindow() != NULL );
3474 if (!GetWindow())
3475 return wxACC_FAIL;
3476
3477 wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3478 if (!ht.empty())
3479 {
3480 *description = ht;
3481 return wxACC_OK;
3482 }
3483 return wxACC_NOT_IMPLEMENTED;
3484 }
3485
3486 // Returns help text for this object or a child, similar to tooltip text.
3487 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3488 {
3489 wxASSERT( GetWindow() != NULL );
3490 if (!GetWindow())
3491 return wxACC_FAIL;
3492
3493 wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3494 if (!ht.empty())
3495 {
3496 *helpText = ht;
3497 return wxACC_OK;
3498 }
3499 return wxACC_NOT_IMPLEMENTED;
3500 }
3501
3502 // Returns the keyboard shortcut for this object or child.
3503 // Return e.g. ALT+K
3504 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3505 {
3506 wxASSERT( GetWindow() != NULL );
3507 if (!GetWindow())
3508 return wxACC_FAIL;
3509
3510 return wxACC_NOT_IMPLEMENTED;
3511 }
3512
3513 // Returns a role constant.
3514 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3515 {
3516 wxASSERT( GetWindow() != NULL );
3517 if (!GetWindow())
3518 return wxACC_FAIL;
3519
3520 // If a child, leave wxWidgets to call the function on the actual
3521 // child object.
3522 if (childId > 0)
3523 return wxACC_NOT_IMPLEMENTED;
3524
3525 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3526 return wxACC_NOT_IMPLEMENTED;
3527 #if wxUSE_STATUSBAR
3528 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3529 return wxACC_NOT_IMPLEMENTED;
3530 #endif
3531 #if wxUSE_TOOLBAR
3532 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3533 return wxACC_NOT_IMPLEMENTED;
3534 #endif
3535
3536 //*role = wxROLE_SYSTEM_CLIENT;
3537 *role = wxROLE_SYSTEM_CLIENT;
3538 return wxACC_OK;
3539
3540 #if 0
3541 return wxACC_NOT_IMPLEMENTED;
3542 #endif
3543 }
3544
3545 // Returns a state constant.
3546 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3547 {
3548 wxASSERT( GetWindow() != NULL );
3549 if (!GetWindow())
3550 return wxACC_FAIL;
3551
3552 // If a child, leave wxWidgets to call the function on the actual
3553 // child object.
3554 if (childId > 0)
3555 return wxACC_NOT_IMPLEMENTED;
3556
3557 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3558 return wxACC_NOT_IMPLEMENTED;
3559
3560 #if wxUSE_STATUSBAR
3561 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3562 return wxACC_NOT_IMPLEMENTED;
3563 #endif
3564 #if wxUSE_TOOLBAR
3565 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3566 return wxACC_NOT_IMPLEMENTED;
3567 #endif
3568
3569 *state = 0;
3570 return wxACC_OK;
3571
3572 #if 0
3573 return wxACC_NOT_IMPLEMENTED;
3574 #endif
3575 }
3576
3577 // Returns a localized string representing the value for the object
3578 // or child.
3579 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3580 {
3581 wxASSERT( GetWindow() != NULL );
3582 if (!GetWindow())
3583 return wxACC_FAIL;
3584
3585 return wxACC_NOT_IMPLEMENTED;
3586 }
3587
3588 // Selects the object or child.
3589 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3590 {
3591 wxASSERT( GetWindow() != NULL );
3592 if (!GetWindow())
3593 return wxACC_FAIL;
3594
3595 return wxACC_NOT_IMPLEMENTED;
3596 }
3597
3598 // Gets the window with the keyboard focus.
3599 // If childId is 0 and child is NULL, no object in
3600 // this subhierarchy has the focus.
3601 // If this object has the focus, child should be 'this'.
3602 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3603 {
3604 wxASSERT( GetWindow() != NULL );
3605 if (!GetWindow())
3606 return wxACC_FAIL;
3607
3608 return wxACC_NOT_IMPLEMENTED;
3609 }
3610
3611 #if wxUSE_VARIANT
3612 // Gets a variant representing the selected children
3613 // of this object.
3614 // Acceptable values:
3615 // - a null variant (IsNull() returns true)
3616 // - a list variant (GetType() == wxT("list")
3617 // - an integer representing the selected child element,
3618 // or 0 if this object is selected (GetType() == wxT("long")
3619 // - a "void*" pointer to a wxAccessible child object
3620 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3621 {
3622 wxASSERT( GetWindow() != NULL );
3623 if (!GetWindow())
3624 return wxACC_FAIL;
3625
3626 return wxACC_NOT_IMPLEMENTED;
3627 }
3628 #endif // wxUSE_VARIANT
3629
3630 #endif // wxUSE_ACCESSIBILITY
3631
3632 // ----------------------------------------------------------------------------
3633 // RTL support
3634 // ----------------------------------------------------------------------------
3635
3636 wxCoord
3637 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3638 wxCoord width,
3639 wxCoord widthTotal) const
3640 {
3641 if ( GetLayoutDirection() == wxLayout_RightToLeft )
3642 {
3643 x = widthTotal - x - width;
3644 }
3645
3646 return x;
3647 }
3648
3649