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[wxWidgets.git] / src / common / wincmn.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: common/window.cpp
3 // Purpose: common (to all ports) wxWindow functions
4 // Author: Julian Smart, Vadim Zeitlin
5 // Modified by:
6 // Created: 13/07/98
7 // RCS-ID: $Id$
8 // Copyright: (c) wxWidgets team
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
21 #pragma implementation "windowbase.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #include "wx/string.h"
33 #include "wx/log.h"
34 #include "wx/intl.h"
35 #include "wx/frame.h"
36 #include "wx/defs.h"
37 #include "wx/window.h"
38 #include "wx/control.h"
39 #include "wx/checkbox.h"
40 #include "wx/radiobut.h"
41 #include "wx/statbox.h"
42 #include "wx/textctrl.h"
43 #include "wx/settings.h"
44 #include "wx/dialog.h"
45 #include "wx/msgdlg.h"
46 #include "wx/statusbr.h"
47 #include "wx/dcclient.h"
48 #endif //WX_PRECOMP
49
50 #if defined(__WXMAC__) && wxUSE_SCROLLBAR
51 #include "wx/scrolbar.h"
52 #endif
53
54 #if wxUSE_CONSTRAINTS
55 #include "wx/layout.h"
56 #endif // wxUSE_CONSTRAINTS
57
58 #include "wx/sizer.h"
59
60 #if wxUSE_DRAG_AND_DROP
61 #include "wx/dnd.h"
62 #endif // wxUSE_DRAG_AND_DROP
63
64 #if wxUSE_ACCESSIBILITY
65 #include "wx/access.h"
66 #endif
67
68 #if wxUSE_HELP
69 #include "wx/cshelp.h"
70 #endif // wxUSE_HELP
71
72 #if wxUSE_TOOLTIPS
73 #include "wx/tooltip.h"
74 #endif // wxUSE_TOOLTIPS
75
76 #if wxUSE_CARET
77 #include "wx/caret.h"
78 #endif // wxUSE_CARET
79
80 // ----------------------------------------------------------------------------
81 // static data
82 // ----------------------------------------------------------------------------
83
84 #if defined(__WXPM__)
85 int wxWindowBase::ms_lastControlId = 2000;
86 #else
87 int wxWindowBase::ms_lastControlId = -200;
88 #endif
89
90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
91
92 // ----------------------------------------------------------------------------
93 // event table
94 // ----------------------------------------------------------------------------
95
96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
97 EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
98 EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
99 EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
100
101 #if wxUSE_HELP
102 EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
103 #endif // wxUSE_HELP
104
105 END_EVENT_TABLE()
106
107 // ============================================================================
108 // implementation of the common functionality of the wxWindow class
109 // ============================================================================
110
111 // ----------------------------------------------------------------------------
112 // initialization
113 // ----------------------------------------------------------------------------
114
115 // the default initialization
116 wxWindowBase::wxWindowBase()
117 {
118 // no window yet, no parent nor children
119 m_parent = (wxWindow *)NULL;
120 m_windowId = wxID_ANY;
121
122 // no constraints on the minimal window size
123 m_minWidth =
124 m_maxWidth = wxDefaultSize.x;
125 m_minHeight =
126 m_maxHeight = wxDefaultSize.y;
127
128 // window are created enabled and visible by default
129 m_isShown =
130 m_isEnabled = true;
131
132 // the default event handler is just this window
133 m_eventHandler = this;
134
135 #if wxUSE_VALIDATORS
136 // no validator
137 m_windowValidator = (wxValidator *) NULL;
138 #endif // wxUSE_VALIDATORS
139
140 // the colours/fonts are default for now, so leave m_font,
141 // m_backgroundColour and m_foregroundColour uninitialized and set those
142 m_hasBgCol =
143 m_hasFgCol =
144 m_hasFont = false;
145
146 // no style bits
147 m_exStyle =
148 m_windowStyle = 0;
149
150 #if wxUSE_CONSTRAINTS
151 // no constraints whatsoever
152 m_constraints = (wxLayoutConstraints *) NULL;
153 m_constraintsInvolvedIn = (wxWindowList *) NULL;
154 #endif // wxUSE_CONSTRAINTS
155
156 m_windowSizer = (wxSizer *) NULL;
157 m_containingSizer = (wxSizer *) NULL;
158 m_autoLayout = false;
159
160 #if wxUSE_DRAG_AND_DROP
161 m_dropTarget = (wxDropTarget *)NULL;
162 #endif // wxUSE_DRAG_AND_DROP
163
164 #if wxUSE_TOOLTIPS
165 m_tooltip = (wxToolTip *)NULL;
166 #endif // wxUSE_TOOLTIPS
167
168 #if wxUSE_CARET
169 m_caret = (wxCaret *)NULL;
170 #endif // wxUSE_CARET
171
172 #if wxUSE_PALETTE
173 m_hasCustomPalette = false;
174 #endif // wxUSE_PALETTE
175
176 #if wxUSE_ACCESSIBILITY
177 m_accessible = NULL;
178 #endif
179
180 m_virtualSize = wxDefaultSize;
181
182 m_minVirtualWidth =
183 m_maxVirtualWidth = wxDefaultSize.x;
184 m_minVirtualHeight =
185 m_maxVirtualHeight = wxDefaultSize.y;
186
187 m_windowVariant = wxWINDOW_VARIANT_NORMAL;
188
189 // Whether we're using the current theme for this window (wxGTK only for now)
190 m_themeEnabled = false;
191
192 // VZ: this one shouldn't exist...
193 m_isBeingDeleted = false;
194 }
195
196 // common part of window creation process
197 bool wxWindowBase::CreateBase(wxWindowBase *parent,
198 wxWindowID id,
199 const wxPoint& WXUNUSED(pos),
200 const wxSize& WXUNUSED(size),
201 long style,
202 const wxValidator& wxVALIDATOR_PARAM(validator),
203 const wxString& name)
204 {
205 #if wxUSE_STATBOX
206 // wxGTK doesn't allow to create controls with static box as the parent so
207 // this will result in a crash when the program is ported to wxGTK so warn
208 // the user about it
209
210 // if you get this assert, the correct solution is to create the controls
211 // as siblings of the static box
212 wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
213 _T("wxStaticBox can't be used as a window parent!") );
214 #endif // wxUSE_STATBOX
215
216 // ids are limited to 16 bits under MSW so if you care about portability,
217 // it's not a good idea to use ids out of this range (and negative ids are
218 // reserved for wxWidgets own usage)
219 wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
220 _T("invalid id value") );
221
222 // generate a new id if the user doesn't care about it
223 m_windowId = id == wxID_ANY ? NewControlId() : id;
224
225 SetName(name);
226 SetWindowStyleFlag(style);
227 SetParent(parent);
228
229 #if wxUSE_VALIDATORS
230 SetValidator(validator);
231 #endif // wxUSE_VALIDATORS
232
233 // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
234 // have it too - like this it's possible to set it only in the top level
235 // dialog/frame and all children will inherit it by defult
236 if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
237 {
238 SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
239 }
240
241 return true;
242 }
243
244 // ----------------------------------------------------------------------------
245 // destruction
246 // ----------------------------------------------------------------------------
247
248 // common clean up
249 wxWindowBase::~wxWindowBase()
250 {
251 wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
252
253 // FIXME if these 2 cases result from programming errors in the user code
254 // we should probably assert here instead of silently fixing them
255
256 // Just in case the window has been Closed, but we're then deleting
257 // immediately: don't leave dangling pointers.
258 wxPendingDelete.DeleteObject(this);
259
260 // Just in case we've loaded a top-level window via LoadNativeDialog but
261 // we weren't a dialog class
262 wxTopLevelWindows.DeleteObject((wxWindow*)this);
263
264 wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
265
266 // reset the dangling pointer our parent window may keep to us
267 if ( m_parent )
268 {
269 if ( m_parent->GetDefaultItem() == this )
270 {
271 m_parent->SetDefaultItem(NULL);
272 }
273
274 m_parent->RemoveChild(this);
275 }
276
277 #if wxUSE_CARET
278 delete m_caret;
279 #endif // wxUSE_CARET
280
281 #if wxUSE_VALIDATORS
282 delete m_windowValidator;
283 #endif // wxUSE_VALIDATORS
284
285 #if wxUSE_CONSTRAINTS
286 // Have to delete constraints/sizer FIRST otherwise sizers may try to look
287 // at deleted windows as they delete themselves.
288 DeleteRelatedConstraints();
289
290 if ( m_constraints )
291 {
292 // This removes any dangling pointers to this window in other windows'
293 // constraintsInvolvedIn lists.
294 UnsetConstraints(m_constraints);
295 delete m_constraints;
296 m_constraints = NULL;
297 }
298 #endif // wxUSE_CONSTRAINTS
299
300 if ( m_containingSizer )
301 m_containingSizer->Detach( (wxWindow*)this );
302
303 delete m_windowSizer;
304
305 #if wxUSE_DRAG_AND_DROP
306 delete m_dropTarget;
307 #endif // wxUSE_DRAG_AND_DROP
308
309 #if wxUSE_TOOLTIPS
310 delete m_tooltip;
311 #endif // wxUSE_TOOLTIPS
312
313 #if wxUSE_ACCESSIBILITY
314 delete m_accessible;
315 #endif
316 }
317
318 bool wxWindowBase::Destroy()
319 {
320 delete this;
321
322 return true;
323 }
324
325 bool wxWindowBase::Close(bool force)
326 {
327 wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
328 event.SetEventObject(this);
329 event.SetCanVeto(!force);
330
331 // return false if window wasn't closed because the application vetoed the
332 // close event
333 return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
334 }
335
336 bool wxWindowBase::DestroyChildren()
337 {
338 wxWindowList::compatibility_iterator node;
339 for ( ;; )
340 {
341 // we iterate until the list becomes empty
342 node = GetChildren().GetFirst();
343 if ( !node )
344 break;
345
346 wxWindow *child = node->GetData();
347
348 // note that we really want to call delete and not ->Destroy() here
349 // because we want to delete the child immediately, before we are
350 // deleted, and delayed deletion would result in problems as our (top
351 // level) child could outlive its parent
352 delete child;
353
354 wxASSERT_MSG( !GetChildren().Find(child),
355 wxT("child didn't remove itself using RemoveChild()") );
356 }
357
358 return true;
359 }
360
361 // ----------------------------------------------------------------------------
362 // size/position related methods
363 // ----------------------------------------------------------------------------
364
365 // centre the window with respect to its parent in either (or both) directions
366 void wxWindowBase::Centre(int direction)
367 {
368 // the position/size of the parent window or of the entire screen
369 wxPoint posParent;
370 int widthParent, heightParent;
371
372 wxWindow *parent = NULL;
373
374 if ( !(direction & wxCENTRE_ON_SCREEN) )
375 {
376 // find the parent to centre this window on: it should be the
377 // immediate parent for the controls but the top level parent for the
378 // top level windows (like dialogs)
379 parent = GetParent();
380 if ( IsTopLevel() )
381 {
382 while ( parent && !parent->IsTopLevel() )
383 {
384 parent = parent->GetParent();
385 }
386 }
387
388 // there is no wxTopLevelWindow under wxMotif yet
389 #ifndef __WXMOTIF__
390 // we shouldn't center the dialog on the iconized window: under
391 // Windows, for example, this places it completely off the screen
392 if ( parent )
393 {
394 wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
395 if ( winTop && winTop->IsIconized() )
396 {
397 parent = NULL;
398 }
399 }
400 #endif // __WXMOTIF__
401
402 // did we find the parent?
403 if ( !parent )
404 {
405 // no other choice
406 direction |= wxCENTRE_ON_SCREEN;
407 }
408 }
409
410 if ( direction & wxCENTRE_ON_SCREEN )
411 {
412 // centre with respect to the whole screen
413 wxDisplaySize(&widthParent, &heightParent);
414 }
415 else
416 {
417 if ( IsTopLevel() )
418 {
419 // centre on the parent
420 parent->GetSize(&widthParent, &heightParent);
421
422 // adjust to the parents position
423 posParent = parent->GetPosition();
424 }
425 else
426 {
427 // centre inside the parents client rectangle
428 parent->GetClientSize(&widthParent, &heightParent);
429 }
430 }
431
432 int width, height;
433 GetSize(&width, &height);
434
435 int xNew = wxDefaultPosition.x,
436 yNew = wxDefaultPosition.y;
437
438 if ( direction & wxHORIZONTAL )
439 xNew = (widthParent - width)/2;
440
441 if ( direction & wxVERTICAL )
442 yNew = (heightParent - height)/2;
443
444 xNew += posParent.x;
445 yNew += posParent.y;
446
447 // Base size of the visible dimensions of the display
448 // to take into account the taskbar
449 wxRect rect = wxGetClientDisplayRect();
450 wxSize size (rect.width,rect.height);
451
452 // NB: in wxMSW, negative position may not neccessary mean "out of screen",
453 // but it may mean that the window is placed on other than the main
454 // display. Therefore we only make sure centered window is on the main display
455 // if the parent is at least partially present here.
456 if (posParent.x + widthParent >= 0) // if parent is (partially) on the main display
457 {
458 if (xNew < 0)
459 xNew = 0;
460 else if (xNew+width > size.x)
461 xNew = size.x-width-1;
462 }
463 if (posParent.y + heightParent >= 0) // if parent is (partially) on the main display
464 {
465 if (yNew+height > size.y)
466 yNew = size.y-height-1;
467
468 // Make certain that the title bar is initially visible
469 // always, even if this would push the bottom of the
470 // dialog of the visible area of the display
471 if (yNew < 0)
472 yNew = 0;
473 }
474
475 // move the window to this position (keeping the old size but using
476 // SetSize() and not Move() to allow xNew and/or yNew to be -1)
477 SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
478 }
479
480 // fits the window around the children
481 void wxWindowBase::Fit()
482 {
483 if ( GetChildren().GetCount() > 0 )
484 {
485 SetClientSize(DoGetBestSize());
486 }
487 //else: do nothing if we have no children
488 }
489
490 // fits virtual size (ie. scrolled area etc.) around children
491 void wxWindowBase::FitInside()
492 {
493 if ( GetChildren().GetCount() > 0 )
494 {
495 SetVirtualSize( GetBestVirtualSize() );
496 }
497 }
498
499 // On Mac, scrollbars are explicitly children.
500 #ifdef __WXMAC__
501 static bool wxHasRealChildren(const wxWindowBase* win)
502 {
503 int realChildCount = 0;
504
505 for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
506 node;
507 node = node->GetNext() )
508 {
509 wxWindow *win = node->GetData();
510 if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
511 realChildCount ++;
512 }
513 return (realChildCount > 0);
514 }
515 #endif
516
517 // return the size best suited for the current window
518 wxSize wxWindowBase::DoGetBestSize() const
519 {
520 if ( m_windowSizer )
521 {
522 return m_windowSizer->GetMinSize();
523 }
524 #if wxUSE_CONSTRAINTS
525 else if ( m_constraints )
526 {
527 wxConstCast(this, wxWindowBase)->SatisfyConstraints();
528
529 // our minimal acceptable size is such that all our windows fit inside
530 int maxX = 0,
531 maxY = 0;
532
533 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
534 node;
535 node = node->GetNext() )
536 {
537 wxLayoutConstraints *c = node->GetData()->GetConstraints();
538 if ( !c )
539 {
540 // it's not normal that we have an unconstrained child, but
541 // what can we do about it?
542 continue;
543 }
544
545 int x = c->right.GetValue(),
546 y = c->bottom.GetValue();
547
548 if ( x > maxX )
549 maxX = x;
550
551 if ( y > maxY )
552 maxY = y;
553
554 // TODO: we must calculate the overlaps somehow, otherwise we
555 // will never return a size bigger than the current one :-(
556 }
557
558 return wxSize(maxX, maxY);
559 }
560 #endif // wxUSE_CONSTRAINTS
561 else if ( !GetChildren().empty()
562 #ifdef __WXMAC__
563 && wxHasRealChildren(this)
564 #endif
565 )
566 {
567 // our minimal acceptable size is such that all our visible child windows fit inside
568 int maxX = 0,
569 maxY = 0;
570
571 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
572 node;
573 node = node->GetNext() )
574 {
575 wxWindow *win = node->GetData();
576 if ( win->IsTopLevel() || ( ! win->IsShown() )
577 #if wxUSE_STATUSBAR
578 || wxDynamicCast(win, wxStatusBar)
579 #endif // wxUSE_STATUSBAR
580 )
581 {
582 // dialogs and frames lie in different top level windows -
583 // don't deal with them here; as for the status bars, they
584 // don't lie in the client area at all
585 continue;
586 }
587
588 int wx, wy, ww, wh;
589 win->GetPosition(&wx, &wy);
590
591 // if the window hadn't been positioned yet, assume that it is in
592 // the origin
593 if ( wx == wxDefaultPosition.x )
594 wx = 0;
595 if ( wy == wxDefaultPosition.y )
596 wy = 0;
597
598 win->GetSize(&ww, &wh);
599 if ( wx + ww > maxX )
600 maxX = wx + ww;
601 if ( wy + wh > maxY )
602 maxY = wy + wh;
603 }
604
605 // for compatibility with the old versions and because it really looks
606 // slightly more pretty like this, add a pad
607 maxX += 7;
608 maxY += 14;
609
610 return wxSize(maxX, maxY);
611 }
612 else // ! has children
613 {
614 // for a generic window there is no natural best size - just use either the
615 // minimum size if there is one, or the current size
616 if ( GetMinSize().IsFullySpecified() )
617 return GetMinSize();
618 else
619 return GetSize();
620 }
621 }
622
623 void wxWindowBase::SetBestSize(const wxSize& size)
624 {
625 // If the given size is incomplete then merge with the best size.
626 wxSize sizeBest;
627 if ( size.x == wxDefaultSize.x || size.y == wxDefaultSize.y )
628 {
629 sizeBest = DoGetBestSize();
630 if ( size.x != wxDefaultSize.x )
631 sizeBest.x = size.x;
632 if ( size.y != wxDefaultSize.y )
633 sizeBest.y = size.y;
634 }
635 else // have complete explicit size
636 {
637 sizeBest = size;
638 }
639
640 // Change the size if needed
641 if (GetSize() != sizeBest)
642 SetSize(sizeBest);
643
644 // don't shrink the control below its best size
645 m_minWidth = sizeBest.x;
646 m_minHeight = sizeBest.y;
647 }
648
649 // by default the origin is not shifted
650 wxPoint wxWindowBase::GetClientAreaOrigin() const
651 {
652 return wxPoint(0, 0);
653 }
654
655 // set the min/max size of the window
656 void wxWindowBase::SetSizeHints(int minW, int minH,
657 int maxW, int maxH,
658 int WXUNUSED(incW), int WXUNUSED(incH))
659 {
660 // setting min width greater than max width leads to infinite loops under
661 // X11 and generally doesn't make any sense, so don't allow it
662 wxCHECK_RET( (minW == wxDefaultSize.x || maxW == wxDefaultSize.x || minW <= maxW) &&
663 (minH == wxDefaultSize.y || maxH == wxDefaultSize.y || minH <= maxH),
664 _T("min width/height must be less than max width/height!") );
665
666 m_minWidth = minW;
667 m_maxWidth = maxW;
668 m_minHeight = minH;
669 m_maxHeight = maxH;
670 }
671
672 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
673 {
674 if ( m_windowVariant != variant )
675 {
676 m_windowVariant = variant;
677
678 DoSetWindowVariant(variant);
679 }
680 }
681
682 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
683 {
684 // adjust the font height to correspond to our new variant (notice that
685 // we're only called if something really changed)
686 wxFont font = GetFont();
687 int size = font.GetPointSize();
688 switch ( variant )
689 {
690 case wxWINDOW_VARIANT_NORMAL:
691 break;
692
693 case wxWINDOW_VARIANT_SMALL:
694 size *= 3;
695 size /= 4;
696 break;
697
698 case wxWINDOW_VARIANT_MINI:
699 size *= 2;
700 size /= 3;
701 break;
702
703 case wxWINDOW_VARIANT_LARGE:
704 size *= 5;
705 size /= 4;
706 break;
707
708 default:
709 wxFAIL_MSG(_T("unexpected window variant"));
710 break;
711 }
712
713 font.SetPointSize(size);
714 SetFont(font);
715 }
716
717 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
718 int maxW, int maxH )
719 {
720 m_minVirtualWidth = minW;
721 m_maxVirtualWidth = maxW;
722 m_minVirtualHeight = minH;
723 m_maxVirtualHeight = maxH;
724 }
725
726 void wxWindowBase::DoSetVirtualSize( int x, int y )
727 {
728 if ( m_minVirtualWidth != wxDefaultSize.x && m_minVirtualWidth > x )
729 x = m_minVirtualWidth;
730 if ( m_maxVirtualWidth != wxDefaultSize.x && m_maxVirtualWidth < x )
731 x = m_maxVirtualWidth;
732 if ( m_minVirtualHeight != wxDefaultSize.y && m_minVirtualHeight > y )
733 y = m_minVirtualHeight;
734 if ( m_maxVirtualHeight != wxDefaultSize.y && m_maxVirtualHeight < y )
735 y = m_maxVirtualHeight;
736
737 m_virtualSize = wxSize(x, y);
738 }
739
740 wxSize wxWindowBase::DoGetVirtualSize() const
741 {
742 wxSize s( GetClientSize() );
743
744 return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
745 wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
746 }
747
748 // ----------------------------------------------------------------------------
749 // show/hide/enable/disable the window
750 // ----------------------------------------------------------------------------
751
752 bool wxWindowBase::Show(bool show)
753 {
754 if ( show != m_isShown )
755 {
756 m_isShown = show;
757
758 return true;
759 }
760 else
761 {
762 return false;
763 }
764 }
765
766 bool wxWindowBase::Enable(bool enable)
767 {
768 if ( enable != m_isEnabled )
769 {
770 m_isEnabled = enable;
771
772 return true;
773 }
774 else
775 {
776 return false;
777 }
778 }
779 // ----------------------------------------------------------------------------
780 // RTTI
781 // ----------------------------------------------------------------------------
782
783 bool wxWindowBase::IsTopLevel() const
784 {
785 return false;
786 }
787
788 // ----------------------------------------------------------------------------
789 // reparenting the window
790 // ----------------------------------------------------------------------------
791
792 void wxWindowBase::AddChild(wxWindowBase *child)
793 {
794 wxCHECK_RET( child, wxT("can't add a NULL child") );
795
796 // this should never happen and it will lead to a crash later if it does
797 // because RemoveChild() will remove only one node from the children list
798 // and the other(s) one(s) will be left with dangling pointers in them
799 wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
800
801 GetChildren().Append((wxWindow*)child);
802 child->SetParent(this);
803 }
804
805 void wxWindowBase::RemoveChild(wxWindowBase *child)
806 {
807 wxCHECK_RET( child, wxT("can't remove a NULL child") );
808
809 GetChildren().DeleteObject((wxWindow *)child);
810 child->SetParent(NULL);
811 }
812
813 bool wxWindowBase::Reparent(wxWindowBase *newParent)
814 {
815 wxWindow *oldParent = GetParent();
816 if ( newParent == oldParent )
817 {
818 // nothing done
819 return false;
820 }
821
822 // unlink this window from the existing parent.
823 if ( oldParent )
824 {
825 oldParent->RemoveChild(this);
826 }
827 else
828 {
829 wxTopLevelWindows.DeleteObject((wxWindow *)this);
830 }
831
832 // add it to the new one
833 if ( newParent )
834 {
835 newParent->AddChild(this);
836 }
837 else
838 {
839 wxTopLevelWindows.Append((wxWindow *)this);
840 }
841
842 return true;
843 }
844
845 // ----------------------------------------------------------------------------
846 // event handler stuff
847 // ----------------------------------------------------------------------------
848
849 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
850 {
851 wxEvtHandler *handlerOld = GetEventHandler();
852
853 handler->SetNextHandler(handlerOld);
854
855 if ( handlerOld )
856 GetEventHandler()->SetPreviousHandler(handler);
857
858 SetEventHandler(handler);
859 }
860
861 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
862 {
863 wxEvtHandler *handlerA = GetEventHandler();
864 if ( handlerA )
865 {
866 wxEvtHandler *handlerB = handlerA->GetNextHandler();
867 handlerA->SetNextHandler((wxEvtHandler *)NULL);
868
869 if ( handlerB )
870 handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
871 SetEventHandler(handlerB);
872
873 if ( deleteHandler )
874 {
875 delete handlerA;
876 handlerA = (wxEvtHandler *)NULL;
877 }
878 }
879
880 return handlerA;
881 }
882
883 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
884 {
885 wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
886
887 wxEvtHandler *handlerPrev = NULL,
888 *handlerCur = GetEventHandler();
889 while ( handlerCur )
890 {
891 wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
892
893 if ( handlerCur == handler )
894 {
895 if ( handlerPrev )
896 {
897 handlerPrev->SetNextHandler(handlerNext);
898 }
899 else
900 {
901 SetEventHandler(handlerNext);
902 }
903
904 if ( handlerNext )
905 {
906 handlerNext->SetPreviousHandler ( handlerPrev );
907 }
908
909 handler->SetNextHandler(NULL);
910 handler->SetPreviousHandler(NULL);
911
912 return true;
913 }
914
915 handlerPrev = handlerCur;
916 handlerCur = handlerNext;
917 }
918
919 wxFAIL_MSG( _T("where has the event handler gone?") );
920
921 return false;
922 }
923
924 // ----------------------------------------------------------------------------
925 // colours, fonts &c
926 // ----------------------------------------------------------------------------
927
928 void wxWindowBase::InheritAttributes()
929 {
930 const wxWindowBase * const parent = GetParent();
931 if ( !parent )
932 return;
933
934 // we only inherit attributes which had been explicitly set for the parent
935 // which ensures that this only happens if the user really wants it and
936 // not by default which wouldn't make any sense in modern GUIs where the
937 // controls don't all use the same fonts (nor colours)
938 if ( parent->m_hasFont && !m_hasFont )
939 SetFont(parent->GetFont());
940
941 // in addition, there is a possibility to explicitly forbid inheriting
942 // colours at each class level by overriding ShouldInheritColours()
943 if ( ShouldInheritColours() )
944 {
945 if ( parent->m_hasFgCol && !m_hasFgCol )
946 SetForegroundColour(parent->GetForegroundColour());
947
948 if ( parent->m_hasBgCol && !m_hasBgCol )
949 SetBackgroundColour(parent->GetBackgroundColour());
950 }
951 }
952
953 /* static */ wxVisualAttributes
954 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
955 {
956 // it is important to return valid values for all attributes from here,
957 // GetXXX() below rely on this
958 wxVisualAttributes attrs;
959 attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
960 attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
961 attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
962
963 return attrs;
964 }
965
966 wxColour wxWindowBase::GetBackgroundColour() const
967 {
968 if ( !m_backgroundColour.Ok() )
969 {
970 wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
971
972 // get our default background colour
973 wxColour colBg = GetDefaultAttributes().colBg;
974
975 // we must return some valid colour to avoid redoing this every time
976 // and also to avoid surprizing the applications written for older
977 // wxWidgets versions where GetBackgroundColour() always returned
978 // something -- so give them something even if it doesn't make sense
979 // for this window (e.g. it has a themed background)
980 if ( !colBg.Ok() )
981 colBg = GetClassDefaultAttributes().colBg;
982
983 // cache it for the next call
984 wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
985 }
986
987 return m_backgroundColour;
988 }
989
990 wxColour wxWindowBase::GetForegroundColour() const
991 {
992 // logic is the same as above
993 if ( !m_hasFgCol && !m_foregroundColour.Ok() )
994 {
995 wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
996
997 wxColour colFg = GetDefaultAttributes().colFg;
998
999 if ( !colFg.Ok() )
1000 colFg = GetClassDefaultAttributes().colFg;
1001
1002 wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
1003 }
1004
1005 return m_foregroundColour;
1006 }
1007
1008 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1009 {
1010 if ( !colour.Ok() || (colour == m_backgroundColour) )
1011 return false;
1012
1013 m_backgroundColour = colour;
1014
1015 m_hasBgCol = true;
1016
1017 return true;
1018 }
1019
1020 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1021 {
1022 if ( !colour.Ok() || (colour == m_foregroundColour) )
1023 return false;
1024
1025 m_foregroundColour = colour;
1026
1027 m_hasFgCol = true;
1028
1029 return true;
1030 }
1031
1032 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1033 {
1034 // setting an invalid cursor is ok, it means that we don't have any special
1035 // cursor
1036 if ( m_cursor == cursor )
1037 {
1038 // no change
1039 return false;
1040 }
1041
1042 m_cursor = cursor;
1043
1044 return true;
1045 }
1046
1047 wxFont& wxWindowBase::DoGetFont() const
1048 {
1049 // logic is the same as in GetBackgroundColour()
1050 if ( !m_font.Ok() )
1051 {
1052 wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1053
1054 wxFont font = GetDefaultAttributes().font;
1055 if ( !font.Ok() )
1056 font = GetClassDefaultAttributes().font;
1057
1058 wxConstCast(this, wxWindowBase)->m_font = font;
1059 }
1060
1061 // cast is here for non-const GetFont() convenience
1062 return wxConstCast(this, wxWindowBase)->m_font;
1063 }
1064
1065 bool wxWindowBase::SetFont(const wxFont& font)
1066 {
1067 if ( !font.Ok() )
1068 return false;
1069
1070 if ( font == m_font )
1071 {
1072 // no change
1073 return false;
1074 }
1075
1076 m_font = font;
1077
1078 m_hasFont = true;
1079
1080 return true;
1081 }
1082
1083 #if wxUSE_PALETTE
1084
1085 void wxWindowBase::SetPalette(const wxPalette& pal)
1086 {
1087 m_hasCustomPalette = true;
1088 m_palette = pal;
1089
1090 // VZ: can anyone explain me what do we do here?
1091 wxWindowDC d((wxWindow *) this);
1092 d.SetPalette(pal);
1093 }
1094
1095 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1096 {
1097 wxWindow *win = (wxWindow *)this;
1098 while ( win && !win->HasCustomPalette() )
1099 {
1100 win = win->GetParent();
1101 }
1102
1103 return win;
1104 }
1105
1106 #endif // wxUSE_PALETTE
1107
1108 #if wxUSE_CARET
1109 void wxWindowBase::SetCaret(wxCaret *caret)
1110 {
1111 if ( m_caret )
1112 {
1113 delete m_caret;
1114 }
1115
1116 m_caret = caret;
1117
1118 if ( m_caret )
1119 {
1120 wxASSERT_MSG( m_caret->GetWindow() == this,
1121 wxT("caret should be created associated to this window") );
1122 }
1123 }
1124 #endif // wxUSE_CARET
1125
1126 #if wxUSE_VALIDATORS
1127 // ----------------------------------------------------------------------------
1128 // validators
1129 // ----------------------------------------------------------------------------
1130
1131 void wxWindowBase::SetValidator(const wxValidator& validator)
1132 {
1133 if ( m_windowValidator )
1134 delete m_windowValidator;
1135
1136 m_windowValidator = (wxValidator *)validator.Clone();
1137
1138 if ( m_windowValidator )
1139 m_windowValidator->SetWindow(this);
1140 }
1141 #endif // wxUSE_VALIDATORS
1142
1143 // ----------------------------------------------------------------------------
1144 // update region stuff
1145 // ----------------------------------------------------------------------------
1146
1147 wxRect wxWindowBase::GetUpdateClientRect() const
1148 {
1149 wxRegion rgnUpdate = GetUpdateRegion();
1150 rgnUpdate.Intersect(GetClientRect());
1151 wxRect rectUpdate = rgnUpdate.GetBox();
1152 wxPoint ptOrigin = GetClientAreaOrigin();
1153 rectUpdate.x -= ptOrigin.x;
1154 rectUpdate.y -= ptOrigin.y;
1155
1156 return rectUpdate;
1157 }
1158
1159 bool wxWindowBase::IsExposed(int x, int y) const
1160 {
1161 return m_updateRegion.Contains(x, y) != wxOutRegion;
1162 }
1163
1164 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1165 {
1166 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1167 }
1168
1169 void wxWindowBase::ClearBackground()
1170 {
1171 // wxGTK uses its own version, no need to add never used code
1172 #ifndef __WXGTK__
1173 wxClientDC dc((wxWindow *)this);
1174 wxBrush brush(GetBackgroundColour(), wxSOLID);
1175 dc.SetBackground(brush);
1176 dc.Clear();
1177 #endif // __WXGTK__
1178 }
1179
1180 // ----------------------------------------------------------------------------
1181 // find child window by id or name
1182 // ----------------------------------------------------------------------------
1183
1184 wxWindow *wxWindowBase::FindWindow( long id )
1185 {
1186 if ( id == m_windowId )
1187 return (wxWindow *)this;
1188
1189 wxWindowBase *res = (wxWindow *)NULL;
1190 wxWindowList::compatibility_iterator node;
1191 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1192 {
1193 wxWindowBase *child = node->GetData();
1194 res = child->FindWindow( id );
1195 }
1196
1197 return (wxWindow *)res;
1198 }
1199
1200 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1201 {
1202 if ( name == m_windowName )
1203 return (wxWindow *)this;
1204
1205 wxWindowBase *res = (wxWindow *)NULL;
1206 wxWindowList::compatibility_iterator node;
1207 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1208 {
1209 wxWindow *child = node->GetData();
1210 res = child->FindWindow(name);
1211 }
1212
1213 return (wxWindow *)res;
1214 }
1215
1216
1217 // find any window by id or name or label: If parent is non-NULL, look through
1218 // children for a label or title matching the specified string. If NULL, look
1219 // through all top-level windows.
1220 //
1221 // to avoid duplicating code we reuse the same helper function but with
1222 // different comparators
1223
1224 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1225 const wxString& label, long id);
1226
1227 static
1228 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1229 long WXUNUSED(id))
1230 {
1231 return win->GetLabel() == label;
1232 }
1233
1234 static
1235 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1236 long WXUNUSED(id))
1237 {
1238 return win->GetName() == label;
1239 }
1240
1241 static
1242 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1243 long id)
1244 {
1245 return win->GetId() == id;
1246 }
1247
1248 // recursive helper for the FindWindowByXXX() functions
1249 static
1250 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1251 const wxString& label,
1252 long id,
1253 wxFindWindowCmp cmp)
1254 {
1255 if ( parent )
1256 {
1257 // see if this is the one we're looking for
1258 if ( (*cmp)(parent, label, id) )
1259 return (wxWindow *)parent;
1260
1261 // It wasn't, so check all its children
1262 for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1263 node;
1264 node = node->GetNext() )
1265 {
1266 // recursively check each child
1267 wxWindow *win = (wxWindow *)node->GetData();
1268 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1269 if (retwin)
1270 return retwin;
1271 }
1272 }
1273
1274 // Not found
1275 return NULL;
1276 }
1277
1278 // helper for FindWindowByXXX()
1279 static
1280 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1281 const wxString& label,
1282 long id,
1283 wxFindWindowCmp cmp)
1284 {
1285 if ( parent )
1286 {
1287 // just check parent and all its children
1288 return wxFindWindowRecursively(parent, label, id, cmp);
1289 }
1290
1291 // start at very top of wx's windows
1292 for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1293 node;
1294 node = node->GetNext() )
1295 {
1296 // recursively check each window & its children
1297 wxWindow *win = node->GetData();
1298 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1299 if (retwin)
1300 return retwin;
1301 }
1302
1303 return NULL;
1304 }
1305
1306 /* static */
1307 wxWindow *
1308 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1309 {
1310 return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1311 }
1312
1313 /* static */
1314 wxWindow *
1315 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1316 {
1317 wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1318
1319 if ( !win )
1320 {
1321 // fall back to the label
1322 win = FindWindowByLabel(title, parent);
1323 }
1324
1325 return win;
1326 }
1327
1328 /* static */
1329 wxWindow *
1330 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1331 {
1332 return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1333 }
1334
1335 // ----------------------------------------------------------------------------
1336 // dialog oriented functions
1337 // ----------------------------------------------------------------------------
1338
1339 void wxWindowBase::MakeModal(bool modal)
1340 {
1341 // Disable all other windows
1342 if ( IsTopLevel() )
1343 {
1344 wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1345 while (node)
1346 {
1347 wxWindow *win = node->GetData();
1348 if (win != this)
1349 win->Enable(!modal);
1350
1351 node = node->GetNext();
1352 }
1353 }
1354 }
1355
1356 bool wxWindowBase::Validate()
1357 {
1358 #if wxUSE_VALIDATORS
1359 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1360
1361 wxWindowList::compatibility_iterator node;
1362 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1363 {
1364 wxWindowBase *child = node->GetData();
1365 wxValidator *validator = child->GetValidator();
1366 if ( validator && !validator->Validate((wxWindow *)this) )
1367 {
1368 return false;
1369 }
1370
1371 if ( recurse && !child->Validate() )
1372 {
1373 return false;
1374 }
1375 }
1376 #endif // wxUSE_VALIDATORS
1377
1378 return true;
1379 }
1380
1381 bool wxWindowBase::TransferDataToWindow()
1382 {
1383 #if wxUSE_VALIDATORS
1384 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1385
1386 wxWindowList::compatibility_iterator node;
1387 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1388 {
1389 wxWindowBase *child = node->GetData();
1390 wxValidator *validator = child->GetValidator();
1391 if ( validator && !validator->TransferToWindow() )
1392 {
1393 wxLogWarning(_("Could not transfer data to window"));
1394 #if wxUSE_LOG
1395 wxLog::FlushActive();
1396 #endif // wxUSE_LOG
1397
1398 return false;
1399 }
1400
1401 if ( recurse )
1402 {
1403 if ( !child->TransferDataToWindow() )
1404 {
1405 // warning already given
1406 return false;
1407 }
1408 }
1409 }
1410 #endif // wxUSE_VALIDATORS
1411
1412 return true;
1413 }
1414
1415 bool wxWindowBase::TransferDataFromWindow()
1416 {
1417 #if wxUSE_VALIDATORS
1418 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1419
1420 wxWindowList::compatibility_iterator node;
1421 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1422 {
1423 wxWindow *child = node->GetData();
1424 wxValidator *validator = child->GetValidator();
1425 if ( validator && !validator->TransferFromWindow() )
1426 {
1427 // nop warning here because the application is supposed to give
1428 // one itself - we don't know here what might have gone wrongly
1429
1430 return false;
1431 }
1432
1433 if ( recurse )
1434 {
1435 if ( !child->TransferDataFromWindow() )
1436 {
1437 // warning already given
1438 return false;
1439 }
1440 }
1441 }
1442 #endif // wxUSE_VALIDATORS
1443
1444 return true;
1445 }
1446
1447 void wxWindowBase::InitDialog()
1448 {
1449 wxInitDialogEvent event(GetId());
1450 event.SetEventObject( this );
1451 GetEventHandler()->ProcessEvent(event);
1452 }
1453
1454 // ----------------------------------------------------------------------------
1455 // context-sensitive help support
1456 // ----------------------------------------------------------------------------
1457
1458 #if wxUSE_HELP
1459
1460 // associate this help text with this window
1461 void wxWindowBase::SetHelpText(const wxString& text)
1462 {
1463 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1464 if ( helpProvider )
1465 {
1466 helpProvider->AddHelp(this, text);
1467 }
1468 }
1469
1470 // associate this help text with all windows with the same id as this
1471 // one
1472 void wxWindowBase::SetHelpTextForId(const wxString& text)
1473 {
1474 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1475 if ( helpProvider )
1476 {
1477 helpProvider->AddHelp(GetId(), text);
1478 }
1479 }
1480
1481 // get the help string associated with this window (may be empty)
1482 wxString wxWindowBase::GetHelpText() const
1483 {
1484 wxString text;
1485 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1486 if ( helpProvider )
1487 {
1488 text = helpProvider->GetHelp(this);
1489 }
1490
1491 return text;
1492 }
1493
1494 // show help for this window
1495 void wxWindowBase::OnHelp(wxHelpEvent& event)
1496 {
1497 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1498 if ( helpProvider )
1499 {
1500 if ( helpProvider->ShowHelp(this) )
1501 {
1502 // skip the event.Skip() below
1503 return;
1504 }
1505 }
1506
1507 event.Skip();
1508 }
1509
1510 #endif // wxUSE_HELP
1511
1512 // ----------------------------------------------------------------------------
1513 // tooltipsroot.Replace("\\", "/");
1514 // ----------------------------------------------------------------------------
1515
1516 #if wxUSE_TOOLTIPS
1517
1518 void wxWindowBase::SetToolTip( const wxString &tip )
1519 {
1520 // don't create the new tooltip if we already have one
1521 if ( m_tooltip )
1522 {
1523 m_tooltip->SetTip( tip );
1524 }
1525 else
1526 {
1527 SetToolTip( new wxToolTip( tip ) );
1528 }
1529
1530 // setting empty tooltip text does not remove the tooltip any more - use
1531 // SetToolTip((wxToolTip *)NULL) for this
1532 }
1533
1534 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1535 {
1536 if ( m_tooltip )
1537 delete m_tooltip;
1538
1539 m_tooltip = tooltip;
1540 }
1541
1542 #endif // wxUSE_TOOLTIPS
1543
1544 // ----------------------------------------------------------------------------
1545 // constraints and sizers
1546 // ----------------------------------------------------------------------------
1547
1548 #if wxUSE_CONSTRAINTS
1549
1550 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1551 {
1552 if ( m_constraints )
1553 {
1554 UnsetConstraints(m_constraints);
1555 delete m_constraints;
1556 }
1557 m_constraints = constraints;
1558 if ( m_constraints )
1559 {
1560 // Make sure other windows know they're part of a 'meaningful relationship'
1561 if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1562 m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1563 if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1564 m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1565 if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1566 m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1567 if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1568 m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1569 if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1570 m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1571 if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1572 m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1573 if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1574 m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1575 if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1576 m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1577 }
1578 }
1579
1580 // This removes any dangling pointers to this window in other windows'
1581 // constraintsInvolvedIn lists.
1582 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1583 {
1584 if ( c )
1585 {
1586 if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1587 c->left.GetOtherWindow()->RemoveConstraintReference(this);
1588 if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1589 c->top.GetOtherWindow()->RemoveConstraintReference(this);
1590 if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1591 c->right.GetOtherWindow()->RemoveConstraintReference(this);
1592 if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1593 c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1594 if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1595 c->width.GetOtherWindow()->RemoveConstraintReference(this);
1596 if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1597 c->height.GetOtherWindow()->RemoveConstraintReference(this);
1598 if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1599 c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1600 if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1601 c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1602 }
1603 }
1604
1605 // Back-pointer to other windows we're involved with, so if we delete this
1606 // window, we must delete any constraints we're involved with.
1607 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1608 {
1609 if ( !m_constraintsInvolvedIn )
1610 m_constraintsInvolvedIn = new wxWindowList;
1611 if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1612 m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1613 }
1614
1615 // REMOVE back-pointer to other windows we're involved with.
1616 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1617 {
1618 if ( m_constraintsInvolvedIn )
1619 m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1620 }
1621
1622 // Reset any constraints that mention this window
1623 void wxWindowBase::DeleteRelatedConstraints()
1624 {
1625 if ( m_constraintsInvolvedIn )
1626 {
1627 wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1628 while (node)
1629 {
1630 wxWindow *win = node->GetData();
1631 wxLayoutConstraints *constr = win->GetConstraints();
1632
1633 // Reset any constraints involving this window
1634 if ( constr )
1635 {
1636 constr->left.ResetIfWin(this);
1637 constr->top.ResetIfWin(this);
1638 constr->right.ResetIfWin(this);
1639 constr->bottom.ResetIfWin(this);
1640 constr->width.ResetIfWin(this);
1641 constr->height.ResetIfWin(this);
1642 constr->centreX.ResetIfWin(this);
1643 constr->centreY.ResetIfWin(this);
1644 }
1645
1646 wxWindowList::compatibility_iterator next = node->GetNext();
1647 m_constraintsInvolvedIn->Erase(node);
1648 node = next;
1649 }
1650
1651 delete m_constraintsInvolvedIn;
1652 m_constraintsInvolvedIn = (wxWindowList *) NULL;
1653 }
1654 }
1655
1656 #endif // wxUSE_CONSTRAINTS
1657
1658 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1659 {
1660 if ( sizer == m_windowSizer)
1661 return;
1662
1663 if ( deleteOld )
1664 delete m_windowSizer;
1665
1666 m_windowSizer = sizer;
1667
1668 SetAutoLayout( sizer != NULL );
1669 }
1670
1671 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1672 {
1673 SetSizer( sizer, deleteOld );
1674 sizer->SetSizeHints( (wxWindow*) this );
1675 }
1676
1677
1678 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1679 {
1680 // adding a window to a sizer twice is going to result in fatal and
1681 // hard to debug problems later because when deleting the second
1682 // associated wxSizerItem we're going to dereference a dangling
1683 // pointer; so try to detect this as early as possible
1684 wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1685 _T("Adding a window to the same sizer twice?") );
1686
1687 m_containingSizer = sizer;
1688 }
1689
1690 #if wxUSE_CONSTRAINTS
1691
1692 void wxWindowBase::SatisfyConstraints()
1693 {
1694 wxLayoutConstraints *constr = GetConstraints();
1695 bool wasOk = constr && constr->AreSatisfied();
1696
1697 ResetConstraints(); // Mark all constraints as unevaluated
1698
1699 int noChanges = 1;
1700
1701 // if we're a top level panel (i.e. our parent is frame/dialog), our
1702 // own constraints will never be satisfied any more unless we do it
1703 // here
1704 if ( wasOk )
1705 {
1706 while ( noChanges > 0 )
1707 {
1708 LayoutPhase1(&noChanges);
1709 }
1710 }
1711
1712 LayoutPhase2(&noChanges);
1713 }
1714
1715 #endif // wxUSE_CONSTRAINTS
1716
1717 bool wxWindowBase::Layout()
1718 {
1719 // If there is a sizer, use it instead of the constraints
1720 if ( GetSizer() )
1721 {
1722 int w, h;
1723 GetVirtualSize(&w, &h);
1724 GetSizer()->SetDimension( 0, 0, w, h );
1725 }
1726 #if wxUSE_CONSTRAINTS
1727 else
1728 {
1729 SatisfyConstraints(); // Find the right constraints values
1730 SetConstraintSizes(); // Recursively set the real window sizes
1731 }
1732 #endif
1733
1734 return true;
1735 }
1736
1737 #if wxUSE_CONSTRAINTS
1738
1739 // first phase of the constraints evaluation: set our own constraints
1740 bool wxWindowBase::LayoutPhase1(int *noChanges)
1741 {
1742 wxLayoutConstraints *constr = GetConstraints();
1743
1744 return !constr || constr->SatisfyConstraints(this, noChanges);
1745 }
1746
1747 // second phase: set the constraints for our children
1748 bool wxWindowBase::LayoutPhase2(int *noChanges)
1749 {
1750 *noChanges = 0;
1751
1752 // Layout children
1753 DoPhase(1);
1754
1755 // Layout grand children
1756 DoPhase(2);
1757
1758 return true;
1759 }
1760
1761 // Do a phase of evaluating child constraints
1762 bool wxWindowBase::DoPhase(int phase)
1763 {
1764 // the list containing the children for which the constraints are already
1765 // set correctly
1766 wxWindowList succeeded;
1767
1768 // the max number of iterations we loop before concluding that we can't set
1769 // the constraints
1770 static const int maxIterations = 500;
1771
1772 for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1773 {
1774 int noChanges = 0;
1775
1776 // loop over all children setting their constraints
1777 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1778 node;
1779 node = node->GetNext() )
1780 {
1781 wxWindow *child = node->GetData();
1782 if ( child->IsTopLevel() )
1783 {
1784 // top level children are not inside our client area
1785 continue;
1786 }
1787
1788 if ( !child->GetConstraints() || succeeded.Find(child) )
1789 {
1790 // this one is either already ok or nothing we can do about it
1791 continue;
1792 }
1793
1794 int tempNoChanges = 0;
1795 bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1796 : child->LayoutPhase2(&tempNoChanges);
1797 noChanges += tempNoChanges;
1798
1799 if ( success )
1800 {
1801 succeeded.Append(child);
1802 }
1803 }
1804
1805 if ( !noChanges )
1806 {
1807 // constraints are set
1808 break;
1809 }
1810 }
1811
1812 return true;
1813 }
1814
1815 void wxWindowBase::ResetConstraints()
1816 {
1817 wxLayoutConstraints *constr = GetConstraints();
1818 if ( constr )
1819 {
1820 constr->left.SetDone(false);
1821 constr->top.SetDone(false);
1822 constr->right.SetDone(false);
1823 constr->bottom.SetDone(false);
1824 constr->width.SetDone(false);
1825 constr->height.SetDone(false);
1826 constr->centreX.SetDone(false);
1827 constr->centreY.SetDone(false);
1828 }
1829
1830 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1831 while (node)
1832 {
1833 wxWindow *win = node->GetData();
1834 if ( !win->IsTopLevel() )
1835 win->ResetConstraints();
1836 node = node->GetNext();
1837 }
1838 }
1839
1840 // Need to distinguish between setting the 'fake' size for windows and sizers,
1841 // and setting the real values.
1842 void wxWindowBase::SetConstraintSizes(bool recurse)
1843 {
1844 wxLayoutConstraints *constr = GetConstraints();
1845 if ( constr && constr->AreSatisfied() )
1846 {
1847 int x = constr->left.GetValue();
1848 int y = constr->top.GetValue();
1849 int w = constr->width.GetValue();
1850 int h = constr->height.GetValue();
1851
1852 if ( (constr->width.GetRelationship() != wxAsIs ) ||
1853 (constr->height.GetRelationship() != wxAsIs) )
1854 {
1855 SetSize(x, y, w, h);
1856 }
1857 else
1858 {
1859 // If we don't want to resize this window, just move it...
1860 Move(x, y);
1861 }
1862 }
1863 else if ( constr )
1864 {
1865 wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1866 GetClassInfo()->GetClassName(),
1867 GetName().c_str());
1868 }
1869
1870 if ( recurse )
1871 {
1872 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1873 while (node)
1874 {
1875 wxWindow *win = node->GetData();
1876 if ( !win->IsTopLevel() && win->GetConstraints() )
1877 win->SetConstraintSizes();
1878 node = node->GetNext();
1879 }
1880 }
1881 }
1882
1883 // Only set the size/position of the constraint (if any)
1884 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1885 {
1886 wxLayoutConstraints *constr = GetConstraints();
1887 if ( constr )
1888 {
1889 if ( x != wxDefaultPosition.x )
1890 {
1891 constr->left.SetValue(x);
1892 constr->left.SetDone(true);
1893 }
1894 if ( y != wxDefaultPosition.y )
1895 {
1896 constr->top.SetValue(y);
1897 constr->top.SetDone(true);
1898 }
1899 if ( w != wxDefaultSize.x )
1900 {
1901 constr->width.SetValue(w);
1902 constr->width.SetDone(true);
1903 }
1904 if ( h != wxDefaultSize.y )
1905 {
1906 constr->height.SetValue(h);
1907 constr->height.SetDone(true);
1908 }
1909 }
1910 }
1911
1912 void wxWindowBase::MoveConstraint(int x, int y)
1913 {
1914 wxLayoutConstraints *constr = GetConstraints();
1915 if ( constr )
1916 {
1917 if ( x != wxDefaultPosition.x )
1918 {
1919 constr->left.SetValue(x);
1920 constr->left.SetDone(true);
1921 }
1922 if ( y != wxDefaultPosition.y )
1923 {
1924 constr->top.SetValue(y);
1925 constr->top.SetDone(true);
1926 }
1927 }
1928 }
1929
1930 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1931 {
1932 wxLayoutConstraints *constr = GetConstraints();
1933 if ( constr )
1934 {
1935 *w = constr->width.GetValue();
1936 *h = constr->height.GetValue();
1937 }
1938 else
1939 GetSize(w, h);
1940 }
1941
1942 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1943 {
1944 wxLayoutConstraints *constr = GetConstraints();
1945 if ( constr )
1946 {
1947 *w = constr->width.GetValue();
1948 *h = constr->height.GetValue();
1949 }
1950 else
1951 GetClientSize(w, h);
1952 }
1953
1954 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1955 {
1956 wxLayoutConstraints *constr = GetConstraints();
1957 if ( constr )
1958 {
1959 *x = constr->left.GetValue();
1960 *y = constr->top.GetValue();
1961 }
1962 else
1963 GetPosition(x, y);
1964 }
1965
1966 #endif // wxUSE_CONSTRAINTS
1967
1968 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1969 {
1970 // don't do it for the dialogs/frames - they float independently of their
1971 // parent
1972 if ( !IsTopLevel() )
1973 {
1974 wxWindow *parent = GetParent();
1975 if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1976 {
1977 wxPoint pt(parent->GetClientAreaOrigin());
1978 x += pt.x;
1979 y += pt.y;
1980 }
1981 }
1982 }
1983
1984 // ----------------------------------------------------------------------------
1985 // do Update UI processing for child controls
1986 // ----------------------------------------------------------------------------
1987
1988 void wxWindowBase::UpdateWindowUI(long flags)
1989 {
1990 wxUpdateUIEvent event(GetId());
1991 event.m_eventObject = this;
1992
1993 if ( GetEventHandler()->ProcessEvent(event) )
1994 {
1995 DoUpdateWindowUI(event);
1996 }
1997
1998 if (flags & wxUPDATE_UI_RECURSE)
1999 {
2000 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2001 while (node)
2002 {
2003 wxWindow* child = (wxWindow*) node->GetData();
2004 child->UpdateWindowUI(flags);
2005 node = node->GetNext();
2006 }
2007 }
2008 }
2009
2010 // do the window-specific processing after processing the update event
2011 // TODO: take specific knowledge out of this function and
2012 // put in each control's base class. Unfortunately we don't
2013 // yet have base implementation files for wxCheckBox and wxRadioButton.
2014 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2015 {
2016 if ( event.GetSetEnabled() )
2017 Enable(event.GetEnabled());
2018
2019 #if wxUSE_CONTROLS
2020 if ( event.GetSetText() )
2021 {
2022 wxControl *control = wxDynamicCastThis(wxControl);
2023 if ( control )
2024 {
2025 if ( event.GetText() != control->GetLabel() )
2026 control->SetLabel(event.GetText());
2027 }
2028 #if wxUSE_CHECKBOX
2029 wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2030 if ( checkbox )
2031 {
2032 if ( event.GetSetChecked() )
2033 checkbox->SetValue(event.GetChecked());
2034 }
2035 #endif // wxUSE_CHECKBOX
2036
2037 #if wxUSE_RADIOBTN
2038 wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2039 if ( radiobtn )
2040 {
2041 if ( event.GetSetChecked() )
2042 radiobtn->SetValue(event.GetChecked());
2043 }
2044 #endif // wxUSE_RADIOBTN
2045 }
2046 #endif
2047 }
2048
2049 #if 0
2050 // call internal idle recursively
2051 // may be obsolete (wait until OnIdle scheme stabilises)
2052 void wxWindowBase::ProcessInternalIdle()
2053 {
2054 OnInternalIdle();
2055
2056 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2057 while (node)
2058 {
2059 wxWindow *child = node->GetData();
2060 child->ProcessInternalIdle();
2061 node = node->GetNext();
2062 }
2063 }
2064 #endif
2065
2066 // ----------------------------------------------------------------------------
2067 // dialog units translations
2068 // ----------------------------------------------------------------------------
2069
2070 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2071 {
2072 int charWidth = GetCharWidth();
2073 int charHeight = GetCharHeight();
2074 wxPoint pt2(-1, -1);
2075 if (pt.x != -1)
2076 pt2.x = (int) ((pt.x * 4) / charWidth);
2077 if (pt.y != -1)
2078 pt2.y = (int) ((pt.y * 8) / charHeight);
2079
2080 return pt2;
2081 }
2082
2083 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2084 {
2085 int charWidth = GetCharWidth();
2086 int charHeight = GetCharHeight();
2087 wxPoint pt2(-1, -1);
2088 if (pt.x != -1)
2089 pt2.x = (int) ((pt.x * charWidth) / 4);
2090 if (pt.y != -1)
2091 pt2.y = (int) ((pt.y * charHeight) / 8);
2092
2093 return pt2;
2094 }
2095
2096 // ----------------------------------------------------------------------------
2097 // event handlers
2098 // ----------------------------------------------------------------------------
2099
2100 // propagate the colour change event to the subwindows
2101 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2102 {
2103 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2104 while ( node )
2105 {
2106 // Only propagate to non-top-level windows
2107 wxWindow *win = node->GetData();
2108 if ( !win->IsTopLevel() )
2109 {
2110 wxSysColourChangedEvent event2;
2111 event.m_eventObject = win;
2112 win->GetEventHandler()->ProcessEvent(event2);
2113 }
2114
2115 node = node->GetNext();
2116 }
2117 }
2118
2119 // the default action is to populate dialog with data when it's created,
2120 // and nudge the UI into displaying itself correctly in case
2121 // we've turned the wxUpdateUIEvents frequency down low.
2122 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2123 {
2124 TransferDataToWindow();
2125
2126 // Update the UI at this point
2127 UpdateWindowUI(wxUPDATE_UI_RECURSE);
2128 }
2129
2130 // process Ctrl-Alt-mclick
2131 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2132 {
2133 #if wxUSE_MSGDLG
2134 if ( event.ControlDown() && event.AltDown() )
2135 {
2136 // don't translate these strings
2137 wxString port;
2138
2139 #ifdef __WXUNIVERSAL__
2140 port = _T("Univ/");
2141 #endif // __WXUNIVERSAL__
2142
2143 switch ( wxGetOsVersion() )
2144 {
2145 case wxMOTIF_X: port += _T("Motif"); break;
2146 case wxMAC:
2147 case wxMAC_DARWIN: port += _T("Mac"); break;
2148 case wxBEOS: port += _T("BeOS"); break;
2149 case wxGTK:
2150 case wxGTK_WIN32:
2151 case wxGTK_OS2:
2152 case wxGTK_BEOS: port += _T("GTK"); break;
2153 case wxWINDOWS:
2154 case wxPENWINDOWS:
2155 case wxWINDOWS_NT:
2156 case wxWIN32S:
2157 case wxWIN95:
2158 case wxWIN386: port += _T("MS Windows"); break;
2159 case wxMGL_UNIX:
2160 case wxMGL_X:
2161 case wxMGL_WIN32:
2162 case wxMGL_OS2: port += _T("MGL"); break;
2163 case wxWINDOWS_OS2:
2164 case wxOS2_PM: port += _T("OS/2"); break;
2165 default: port += _T("unknown"); break;
2166 }
2167
2168 wxMessageBox(wxString::Format(
2169 _T(
2170 " wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n Copyright (c) 1995-2002 wxWidgets team"
2171 ),
2172 port.c_str(),
2173 wxMAJOR_VERSION,
2174 wxMINOR_VERSION,
2175 wxRELEASE_NUMBER,
2176 #if wxUSE_UNICODE
2177 L" (Unicode)",
2178 #else
2179 "",
2180 #endif
2181 __TDATE__,
2182 __TTIME__
2183 ),
2184 _T("wxWidgets information"),
2185 wxICON_INFORMATION | wxOK,
2186 (wxWindow *)this);
2187 }
2188 else
2189 #endif // wxUSE_MSGDLG
2190 {
2191 event.Skip();
2192 }
2193 }
2194
2195 // ----------------------------------------------------------------------------
2196 // accessibility
2197 // ----------------------------------------------------------------------------
2198
2199 #if wxUSE_ACCESSIBILITY
2200 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2201 {
2202 if (m_accessible && (accessible != m_accessible))
2203 delete m_accessible;
2204 m_accessible = accessible;
2205 if (m_accessible)
2206 m_accessible->SetWindow((wxWindow*) this);
2207 }
2208
2209 // Returns the accessible object, creating if necessary.
2210 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2211 {
2212 if (!m_accessible)
2213 m_accessible = CreateAccessible();
2214 return m_accessible;
2215 }
2216
2217 // Override to create a specific accessible object.
2218 wxAccessible* wxWindowBase::CreateAccessible()
2219 {
2220 return new wxWindowAccessible((wxWindow*) this);
2221 }
2222
2223 #endif
2224
2225 #if !wxUSE_STL
2226 // ----------------------------------------------------------------------------
2227 // list classes implementation
2228 // ----------------------------------------------------------------------------
2229
2230 void wxWindowListNode::DeleteData()
2231 {
2232 delete (wxWindow *)GetData();
2233 }
2234 #endif
2235
2236 // ----------------------------------------------------------------------------
2237 // borders
2238 // ----------------------------------------------------------------------------
2239
2240 wxBorder wxWindowBase::GetBorder(long flags) const
2241 {
2242 wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2243 if ( border == wxBORDER_DEFAULT )
2244 {
2245 border = GetDefaultBorder();
2246 }
2247
2248 return border;
2249 }
2250
2251 wxBorder wxWindowBase::GetDefaultBorder() const
2252 {
2253 return wxBORDER_NONE;
2254 }
2255
2256 // ----------------------------------------------------------------------------
2257 // hit testing
2258 // ----------------------------------------------------------------------------
2259
2260 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2261 {
2262 // here we just check if the point is inside the window or not
2263
2264 // check the top and left border first
2265 bool outside = x < 0 || y < 0;
2266 if ( !outside )
2267 {
2268 // check the right and bottom borders too
2269 wxSize size = GetSize();
2270 outside = x >= size.x || y >= size.y;
2271 }
2272
2273 return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2274 }
2275
2276 // ----------------------------------------------------------------------------
2277 // mouse capture
2278 // ----------------------------------------------------------------------------
2279
2280 struct WXDLLEXPORT wxWindowNext
2281 {
2282 wxWindow *win;
2283 wxWindowNext *next;
2284 } *wxWindowBase::ms_winCaptureNext = NULL;
2285
2286 void wxWindowBase::CaptureMouse()
2287 {
2288 wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2289
2290 wxWindow *winOld = GetCapture();
2291 if ( winOld )
2292 {
2293 ((wxWindowBase*) winOld)->DoReleaseMouse();
2294
2295 // save it on stack
2296 wxWindowNext *item = new wxWindowNext;
2297 item->win = winOld;
2298 item->next = ms_winCaptureNext;
2299 ms_winCaptureNext = item;
2300 }
2301 //else: no mouse capture to save
2302
2303 DoCaptureMouse();
2304 }
2305
2306 void wxWindowBase::ReleaseMouse()
2307 {
2308 wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2309
2310 wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2311
2312 DoReleaseMouse();
2313
2314 if ( ms_winCaptureNext )
2315 {
2316 ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2317
2318 wxWindowNext *item = ms_winCaptureNext;
2319 ms_winCaptureNext = item->next;
2320 delete item;
2321 }
2322 //else: stack is empty, no previous capture
2323
2324 wxLogTrace(_T("mousecapture"),
2325 (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2326 GetCapture());
2327 }
2328
2329 #if wxUSE_HOTKEY
2330
2331 bool
2332 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2333 int WXUNUSED(modifiers),
2334 int WXUNUSED(keycode))
2335 {
2336 // not implemented
2337 return false;
2338 }
2339
2340 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2341 {
2342 // not implemented
2343 return false;
2344 }
2345
2346 #endif // wxUSE_HOTKEY
2347
2348 void wxWindowBase::SendDestroyEvent()
2349 {
2350 wxWindowDestroyEvent event;
2351 event.SetEventObject(this);
2352 event.SetId(GetId());
2353 GetEventHandler()->ProcessEvent(event);
2354 }
2355
2356 // ----------------------------------------------------------------------------
2357 // event processing
2358 // ----------------------------------------------------------------------------
2359
2360 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2361 {
2362 #if wxUSE_VALIDATORS
2363 // Can only use the validator of the window which
2364 // is receiving the event
2365 if ( event.GetEventObject() == this )
2366 {
2367 wxValidator *validator = GetValidator();
2368 if ( validator && validator->ProcessEvent(event) )
2369 {
2370 return true;
2371 }
2372 }
2373 #endif // wxUSE_VALIDATORS
2374
2375 return false;
2376 }
2377
2378 bool wxWindowBase::TryParent(wxEvent& event)
2379 {
2380 // carry on up the parent-child hierarchy if the propgation count hasn't
2381 // reached zero yet
2382 if ( event.ShouldPropagate() )
2383 {
2384 // honour the requests to stop propagation at this window: this is
2385 // used by the dialogs, for example, to prevent processing the events
2386 // from the dialog controls in the parent frame which rarely, if ever,
2387 // makes sense
2388 if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2389 {
2390 wxWindow *parent = GetParent();
2391 if ( parent && !parent->IsBeingDeleted() )
2392 {
2393 wxPropagateOnce propagateOnce(event);
2394
2395 return parent->GetEventHandler()->ProcessEvent(event);
2396 }
2397 }
2398 }
2399
2400 return wxEvtHandler::TryParent(event);
2401 }
2402
2403 // ----------------------------------------------------------------------------
2404 // navigation
2405 // ----------------------------------------------------------------------------
2406
2407 // Navigates in the specified direction.
2408 bool wxWindowBase::Navigate(bool direction, bool windowChange)
2409 {
2410 wxNavigationKeyEvent eventNav;
2411 eventNav.SetDirection(direction);
2412 eventNav.SetWindowChange(windowChange);
2413 eventNav.SetEventObject(this);
2414 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2415 {
2416 return true;
2417 }
2418 return false;
2419 }
2420
2421 // ----------------------------------------------------------------------------
2422 // global functions
2423 // ----------------------------------------------------------------------------
2424
2425 wxWindow* wxGetTopLevelParent(wxWindow *win)
2426 {
2427 while ( win && !win->IsTopLevel() )
2428 win = win->GetParent();
2429
2430 return win;
2431 }
2432
2433 #if wxUSE_ACCESSIBILITY
2434 // ----------------------------------------------------------------------------
2435 // accessible object for windows
2436 // ----------------------------------------------------------------------------
2437
2438 // Can return either a child object, or an integer
2439 // representing the child element, starting from 1.
2440 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2441 {
2442 wxASSERT( GetWindow() != NULL );
2443 if (!GetWindow())
2444 return wxACC_FAIL;
2445
2446 return wxACC_NOT_IMPLEMENTED;
2447 }
2448
2449 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2450 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2451 {
2452 wxASSERT( GetWindow() != NULL );
2453 if (!GetWindow())
2454 return wxACC_FAIL;
2455
2456 wxWindow* win = NULL;
2457 if (elementId == 0)
2458 {
2459 win = GetWindow();
2460 }
2461 else
2462 {
2463 if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2464 {
2465 win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2466 }
2467 else
2468 return wxACC_FAIL;
2469 }
2470 if (win)
2471 {
2472 rect = win->GetRect();
2473 if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2474 rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2475 return wxACC_OK;
2476 }
2477
2478 return wxACC_NOT_IMPLEMENTED;
2479 }
2480
2481 // Navigates from fromId to toId/toObject.
2482 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2483 int* WXUNUSED(toId), wxAccessible** toObject)
2484 {
2485 wxASSERT( GetWindow() != NULL );
2486 if (!GetWindow())
2487 return wxACC_FAIL;
2488
2489 switch (navDir)
2490 {
2491 case wxNAVDIR_FIRSTCHILD:
2492 {
2493 if (GetWindow()->GetChildren().GetCount() == 0)
2494 return wxACC_FALSE;
2495 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2496 *toObject = childWindow->GetOrCreateAccessible();
2497
2498 return wxACC_OK;
2499 }
2500 case wxNAVDIR_LASTCHILD:
2501 {
2502 if (GetWindow()->GetChildren().GetCount() == 0)
2503 return wxACC_FALSE;
2504 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2505 *toObject = childWindow->GetOrCreateAccessible();
2506
2507 return wxACC_OK;
2508 }
2509 case wxNAVDIR_RIGHT:
2510 case wxNAVDIR_DOWN:
2511 case wxNAVDIR_NEXT:
2512 {
2513 wxWindowList::compatibility_iterator node =
2514 wxWindowList::compatibility_iterator();
2515 if (fromId == 0)
2516 {
2517 // Can't navigate to sibling of this window
2518 // if we're a top-level window.
2519 if (!GetWindow()->GetParent())
2520 return wxACC_NOT_IMPLEMENTED;
2521
2522 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2523 }
2524 else
2525 {
2526 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2527 node = GetWindow()->GetChildren().Item(fromId-1);
2528 }
2529
2530 if (node && node->GetNext())
2531 {
2532 wxWindow* nextWindow = node->GetNext()->GetData();
2533 *toObject = nextWindow->GetOrCreateAccessible();
2534 return wxACC_OK;
2535 }
2536 else
2537 return wxACC_FALSE;
2538 }
2539 case wxNAVDIR_LEFT:
2540 case wxNAVDIR_UP:
2541 case wxNAVDIR_PREVIOUS:
2542 {
2543 wxWindowList::compatibility_iterator node =
2544 wxWindowList::compatibility_iterator();
2545 if (fromId == 0)
2546 {
2547 // Can't navigate to sibling of this window
2548 // if we're a top-level window.
2549 if (!GetWindow()->GetParent())
2550 return wxACC_NOT_IMPLEMENTED;
2551
2552 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2553 }
2554 else
2555 {
2556 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2557 node = GetWindow()->GetChildren().Item(fromId-1);
2558 }
2559
2560 if (node && node->GetPrevious())
2561 {
2562 wxWindow* previousWindow = node->GetPrevious()->GetData();
2563 *toObject = previousWindow->GetOrCreateAccessible();
2564 return wxACC_OK;
2565 }
2566 else
2567 return wxACC_FALSE;
2568 }
2569 }
2570
2571 return wxACC_NOT_IMPLEMENTED;
2572 }
2573
2574 // Gets the name of the specified object.
2575 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2576 {
2577 wxASSERT( GetWindow() != NULL );
2578 if (!GetWindow())
2579 return wxACC_FAIL;
2580
2581 wxString title;
2582
2583 // If a child, leave wxWidgets to call the function on the actual
2584 // child object.
2585 if (childId > 0)
2586 return wxACC_NOT_IMPLEMENTED;
2587
2588 // This will eventually be replaced by specialised
2589 // accessible classes, one for each kind of wxWidgets
2590 // control or window.
2591 #if wxUSE_BUTTON
2592 if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2593 title = ((wxButton*) GetWindow())->GetLabel();
2594 else
2595 #endif
2596 title = GetWindow()->GetName();
2597
2598 if (!title.IsEmpty())
2599 {
2600 *name = title;
2601 return wxACC_OK;
2602 }
2603 else
2604 return wxACC_NOT_IMPLEMENTED;
2605 }
2606
2607 // Gets the number of children.
2608 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2609 {
2610 wxASSERT( GetWindow() != NULL );
2611 if (!GetWindow())
2612 return wxACC_FAIL;
2613
2614 *childId = (int) GetWindow()->GetChildren().GetCount();
2615 return wxACC_OK;
2616 }
2617
2618 // Gets the specified child (starting from 1).
2619 // If *child is NULL and return value is wxACC_OK,
2620 // this means that the child is a simple element and
2621 // not an accessible object.
2622 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2623 {
2624 wxASSERT( GetWindow() != NULL );
2625 if (!GetWindow())
2626 return wxACC_FAIL;
2627
2628 if (childId == 0)
2629 {
2630 *child = this;
2631 return wxACC_OK;
2632 }
2633
2634 if (childId > (int) GetWindow()->GetChildren().GetCount())
2635 return wxACC_FAIL;
2636
2637 wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2638 *child = childWindow->GetOrCreateAccessible();
2639 if (*child)
2640 return wxACC_OK;
2641 else
2642 return wxACC_FAIL;
2643 }
2644
2645 // Gets the parent, or NULL.
2646 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2647 {
2648 wxASSERT( GetWindow() != NULL );
2649 if (!GetWindow())
2650 return wxACC_FAIL;
2651
2652 wxWindow* parentWindow = GetWindow()->GetParent();
2653 if (!parentWindow)
2654 {
2655 *parent = NULL;
2656 return wxACC_OK;
2657 }
2658 else
2659 {
2660 *parent = parentWindow->GetOrCreateAccessible();
2661 if (*parent)
2662 return wxACC_OK;
2663 else
2664 return wxACC_FAIL;
2665 }
2666 }
2667
2668 // Performs the default action. childId is 0 (the action for this object)
2669 // or > 0 (the action for a child).
2670 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2671 // window (e.g. an edit control).
2672 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2673 {
2674 wxASSERT( GetWindow() != NULL );
2675 if (!GetWindow())
2676 return wxACC_FAIL;
2677
2678 return wxACC_NOT_IMPLEMENTED;
2679 }
2680
2681 // Gets the default action for this object (0) or > 0 (the action for a child).
2682 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2683 // string if there is no action.
2684 // The retrieved string describes the action that is performed on an object,
2685 // not what the object does as a result. For example, a toolbar button that prints
2686 // a document has a default action of "Press" rather than "Prints the current document."
2687 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2688 {
2689 wxASSERT( GetWindow() != NULL );
2690 if (!GetWindow())
2691 return wxACC_FAIL;
2692
2693 return wxACC_NOT_IMPLEMENTED;
2694 }
2695
2696 // Returns the description for this object or a child.
2697 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2698 {
2699 wxASSERT( GetWindow() != NULL );
2700 if (!GetWindow())
2701 return wxACC_FAIL;
2702
2703 wxString ht(GetWindow()->GetHelpText());
2704 if (!ht.IsEmpty())
2705 {
2706 *description = ht;
2707 return wxACC_OK;
2708 }
2709 return wxACC_NOT_IMPLEMENTED;
2710 }
2711
2712 // Returns help text for this object or a child, similar to tooltip text.
2713 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2714 {
2715 wxASSERT( GetWindow() != NULL );
2716 if (!GetWindow())
2717 return wxACC_FAIL;
2718
2719 wxString ht(GetWindow()->GetHelpText());
2720 if (!ht.IsEmpty())
2721 {
2722 *helpText = ht;
2723 return wxACC_OK;
2724 }
2725 return wxACC_NOT_IMPLEMENTED;
2726 }
2727
2728 // Returns the keyboard shortcut for this object or child.
2729 // Return e.g. ALT+K
2730 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2731 {
2732 wxASSERT( GetWindow() != NULL );
2733 if (!GetWindow())
2734 return wxACC_FAIL;
2735
2736 return wxACC_NOT_IMPLEMENTED;
2737 }
2738
2739 // Returns a role constant.
2740 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2741 {
2742 wxASSERT( GetWindow() != NULL );
2743 if (!GetWindow())
2744 return wxACC_FAIL;
2745
2746 // If a child, leave wxWidgets to call the function on the actual
2747 // child object.
2748 if (childId > 0)
2749 return wxACC_NOT_IMPLEMENTED;
2750
2751 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2752 return wxACC_NOT_IMPLEMENTED;
2753 #if wxUSE_STATUSBAR
2754 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2755 return wxACC_NOT_IMPLEMENTED;
2756 #endif
2757 #if wxUSE_TOOLBAR
2758 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2759 return wxACC_NOT_IMPLEMENTED;
2760 #endif
2761
2762 //*role = wxROLE_SYSTEM_CLIENT;
2763 *role = wxROLE_SYSTEM_CLIENT;
2764 return wxACC_OK;
2765
2766 #if 0
2767 return wxACC_NOT_IMPLEMENTED;
2768 #endif
2769 }
2770
2771 // Returns a state constant.
2772 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2773 {
2774 wxASSERT( GetWindow() != NULL );
2775 if (!GetWindow())
2776 return wxACC_FAIL;
2777
2778 // If a child, leave wxWidgets to call the function on the actual
2779 // child object.
2780 if (childId > 0)
2781 return wxACC_NOT_IMPLEMENTED;
2782
2783 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2784 return wxACC_NOT_IMPLEMENTED;
2785
2786 #if wxUSE_STATUSBAR
2787 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2788 return wxACC_NOT_IMPLEMENTED;
2789 #endif
2790 #if wxUSE_TOOLBAR
2791 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2792 return wxACC_NOT_IMPLEMENTED;
2793 #endif
2794
2795 *state = 0;
2796 return wxACC_OK;
2797
2798 #if 0
2799 return wxACC_NOT_IMPLEMENTED;
2800 #endif
2801 }
2802
2803 // Returns a localized string representing the value for the object
2804 // or child.
2805 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2806 {
2807 wxASSERT( GetWindow() != NULL );
2808 if (!GetWindow())
2809 return wxACC_FAIL;
2810
2811 return wxACC_NOT_IMPLEMENTED;
2812 }
2813
2814 // Selects the object or child.
2815 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2816 {
2817 wxASSERT( GetWindow() != NULL );
2818 if (!GetWindow())
2819 return wxACC_FAIL;
2820
2821 return wxACC_NOT_IMPLEMENTED;
2822 }
2823
2824 // Gets the window with the keyboard focus.
2825 // If childId is 0 and child is NULL, no object in
2826 // this subhierarchy has the focus.
2827 // If this object has the focus, child should be 'this'.
2828 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2829 {
2830 wxASSERT( GetWindow() != NULL );
2831 if (!GetWindow())
2832 return wxACC_FAIL;
2833
2834 return wxACC_NOT_IMPLEMENTED;
2835 }
2836
2837 // Gets a variant representing the selected children
2838 // of this object.
2839 // Acceptable values:
2840 // - a null variant (IsNull() returns TRUE)
2841 // - a list variant (GetType() == wxT("list")
2842 // - an integer representing the selected child element,
2843 // or 0 if this object is selected (GetType() == wxT("long")
2844 // - a "void*" pointer to a wxAccessible child object
2845 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2846 {
2847 wxASSERT( GetWindow() != NULL );
2848 if (!GetWindow())
2849 return wxACC_FAIL;
2850
2851 return wxACC_NOT_IMPLEMENTED;
2852 }
2853
2854 #endif // wxUSE_ACCESSIBILITY
wxWidgets (Impactor)