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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/univ/window.cpp
3 // Purpose: implementation of extra wxWindow methods for wxUniv port
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 06.08.00
7 // RCS-ID: $Id$
8 // Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
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 #include "wx/window.h"
28
29 #ifndef WX_PRECOMP
30 #include "wx/app.h"
31 #include "wx/dcclient.h"
32 #include "wx/dcmemory.h"
33 #include "wx/event.h"
34 #include "wx/scrolbar.h"
35 #include "wx/menu.h"
36 #include "wx/frame.h"
37 #include "wx/log.h"
38 #endif // WX_PRECOMP
39
40 #include "wx/univ/colschem.h"
41 #include "wx/univ/renderer.h"
42 #include "wx/univ/theme.h"
43
44 #if wxUSE_CARET
45 #include "wx/caret.h"
46 #endif // wxUSE_CARET
47
48 // turn Refresh() debugging on/off
49 #define WXDEBUG_REFRESH
50
51 #ifndef __WXDEBUG__
52 #undef WXDEBUG_REFRESH
53 #endif
54
55 #if defined(WXDEBUG_REFRESH) && defined(__WXMSW__) && !defined(__WXMICROWIN__)
56 #include "wx/msw/private.h"
57 #endif
58
59 // ============================================================================
60 // implementation
61 // ============================================================================
62
63 // ----------------------------------------------------------------------------
64 // scrollbars class
65 // ----------------------------------------------------------------------------
66
67 // This is scrollbar class used to implement wxWindow's "built-in" scrollbars;
68 // unlike the standard wxScrollBar class, this one is positioned outside of its
69 // parent's client area
70 class wxWindowScrollBar : public wxScrollBar
71 {
72 public:
73 wxWindowScrollBar(wxWindow *parent,
74 wxWindowID id,
75 const wxPoint& pos = wxDefaultPosition,
76 const wxSize& size = wxDefaultSize,
77 long style = wxSB_HORIZONTAL)
78 : wxScrollBar(parent, id, pos, size, style)
79 {
80 }
81
82 virtual bool CanBeOutsideClientArea() const { return true; }
83 };
84
85
86 // ----------------------------------------------------------------------------
87 // event tables
88 // ----------------------------------------------------------------------------
89
90 // we can't use wxWindowNative here as it won't be expanded inside the macro
91 #if defined(__WXMSW__)
92 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMSW)
93 #elif defined(__WXGTK__)
94 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowGTK)
95 #elif defined(__WXMGL__)
96 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowMGL)
97 #elif defined(__WXDFB__)
98 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowDFB)
99 #elif defined(__WXX11__)
100 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowX11)
101 #elif defined(__WXPM__)
102 IMPLEMENT_DYNAMIC_CLASS(wxWindow, wxWindowOS2)
103 #endif
104
105 BEGIN_EVENT_TABLE(wxWindow, wxWindowNative)
106 EVT_SIZE(wxWindow::OnSize)
107
108 #if wxUSE_ACCEL || wxUSE_MENUS
109 EVT_KEY_DOWN(wxWindow::OnKeyDown)
110 #endif // wxUSE_ACCEL
111
112 #if wxUSE_MENUS
113 EVT_CHAR(wxWindow::OnChar)
114 EVT_KEY_UP(wxWindow::OnKeyUp)
115 #endif // wxUSE_MENUS
116
117 EVT_PAINT(wxWindow::OnPaint)
118 EVT_NC_PAINT(wxWindow::OnNcPaint)
119 EVT_ERASE_BACKGROUND(wxWindow::OnErase)
120 END_EVENT_TABLE()
121
122 // ----------------------------------------------------------------------------
123 // creation
124 // ----------------------------------------------------------------------------
125
126 void wxWindow::Init()
127 {
128 #if wxUSE_SCROLLBAR
129 m_scrollbarVert =
130 m_scrollbarHorz = (wxScrollBar *)NULL;
131 #endif // wxUSE_SCROLLBAR
132
133 m_isCurrent = false;
134
135 m_renderer = wxTheme::Get()->GetRenderer();
136
137 m_oldSize.x = wxDefaultCoord;
138 m_oldSize.y = wxDefaultCoord;
139 }
140
141 bool wxWindow::Create(wxWindow *parent,
142 wxWindowID id,
143 const wxPoint& pos,
144 const wxSize& size,
145 long style,
146 const wxString& name)
147 {
148 // Get default border
149 wxBorder border = GetBorder(style);
150 style &= ~wxBORDER_MASK;
151 style |= border;
152
153 long actualStyle = style;
154
155 // we add wxCLIP_CHILDREN to get the same ("natural") behaviour under MSW
156 // as under the other platforms
157 actualStyle |= wxCLIP_CHILDREN;
158
159 actualStyle &= ~wxVSCROLL;
160 actualStyle &= ~wxHSCROLL;
161
162 #ifdef __WXMSW__
163 // without this, borders (non-client areas in general) are not repainted
164 // correctly when resizing; apparently, native NC areas are fully repainted
165 // even without this style by MSW, but wxUniv implements client area
166 // itself, so it doesn't work correctly for us
167 //
168 // FIXME: this is very expensive, we need to fix the (commented-out) code
169 // in OnSize() instead
170 actualStyle |= wxFULL_REPAINT_ON_RESIZE;
171 #endif
172
173 if ( !wxWindowNative::Create(parent, id, pos, size, actualStyle, name) )
174 return false;
175
176 // Set full style again, including those we didn't want present
177 // when calling the base window Create().
178 wxWindowBase::SetWindowStyleFlag(style);
179
180 // if we allow or should always have a vertical scrollbar, make it
181 if ( style & wxVSCROLL || style & wxALWAYS_SHOW_SB )
182 {
183 #if wxUSE_TWO_WINDOWS
184 SetInsertIntoMain( true );
185 #endif
186 #if wxUSE_SCROLLBAR
187 m_scrollbarVert = new wxWindowScrollBar(this, wxID_ANY,
188 wxDefaultPosition, wxDefaultSize,
189 wxSB_VERTICAL);
190 #endif // wxUSE_SCROLLBAR
191 #if wxUSE_TWO_WINDOWS
192 SetInsertIntoMain( false );
193 #endif
194 }
195
196 // if we should allow a horizontal scrollbar, make it
197 if ( style & wxHSCROLL )
198 {
199 #if wxUSE_TWO_WINDOWS
200 SetInsertIntoMain( true );
201 #endif
202 #if wxUSE_SCROLLBAR
203 m_scrollbarHorz = new wxWindowScrollBar(this, wxID_ANY,
204 wxDefaultPosition, wxDefaultSize,
205 wxSB_HORIZONTAL);
206 #endif // wxUSE_SCROLLBAR
207 #if wxUSE_TWO_WINDOWS
208 SetInsertIntoMain( false );
209 #endif
210 }
211
212 #if wxUSE_SCROLLBAR
213 if (m_scrollbarHorz || m_scrollbarVert)
214 {
215 // position it/them
216 PositionScrollbars();
217 }
218 #endif // wxUSE_SCROLLBAR
219
220 return true;
221 }
222
223 wxWindow::~wxWindow()
224 {
225 m_isBeingDeleted = true;
226
227 #if wxUSE_SCROLLBAR
228 // clear pointers to scrollbar before deleting the children: they are
229 // children and so will be deleted by DestroyChildren() call below and if
230 // any code using the scrollbars would be called in the process or from
231 // ~wxWindowBase, the app would crash:
232 m_scrollbarVert = m_scrollbarHorz = NULL;
233 #endif
234
235 // we have to destroy our children before we're destroyed because our
236 // children suppose that we're of type wxWindow, not just wxWindowNative,
237 // and so bad things may happen if they're deleted from the base class dtor
238 // as by then we're not a wxWindow any longer and wxUniv-specific virtual
239 // functions can't be called
240 DestroyChildren();
241 }
242
243 // ----------------------------------------------------------------------------
244 // background pixmap
245 // ----------------------------------------------------------------------------
246
247 void wxWindow::SetBackground(const wxBitmap& bitmap,
248 int alignment,
249 wxStretch stretch)
250 {
251 m_bitmapBg = bitmap;
252 m_alignBgBitmap = alignment;
253 m_stretchBgBitmap = stretch;
254 }
255
256 const wxBitmap& wxWindow::GetBackgroundBitmap(int *alignment,
257 wxStretch *stretch) const
258 {
259 if ( m_bitmapBg.Ok() )
260 {
261 if ( alignment )
262 *alignment = m_alignBgBitmap;
263 if ( stretch )
264 *stretch = m_stretchBgBitmap;
265 }
266
267 return m_bitmapBg;
268 }
269
270 // ----------------------------------------------------------------------------
271 // painting
272 // ----------------------------------------------------------------------------
273
274 // the event handlers executed when the window must be repainted
275 void wxWindow::OnNcPaint(wxNcPaintEvent& WXUNUSED(event))
276 {
277 if ( m_renderer )
278 {
279 // get the window rect
280 wxRect rect(GetSize());
281
282 #if wxUSE_SCROLLBAR
283 // if the scrollbars are outside the border, we must adjust the rect to
284 // exclude them
285 if ( !m_renderer->AreScrollbarsInsideBorder() )
286 {
287 wxScrollBar *scrollbar = GetScrollbar(wxVERTICAL);
288 if ( scrollbar )
289 rect.width -= scrollbar->GetSize().x;
290
291 scrollbar = GetScrollbar(wxHORIZONTAL);
292 if ( scrollbar )
293 rect.height -= scrollbar->GetSize().y;
294 }
295 #endif // wxUSE_SCROLLBAR
296
297 // get the DC and draw the border on it
298 wxWindowDC dc(this);
299 DoDrawBorder(dc, rect);
300 }
301 }
302
303 void wxWindow::OnPaint(wxPaintEvent& event)
304 {
305 if ( !m_renderer )
306 {
307 // it is a native control which paints itself
308 event.Skip();
309 }
310 else
311 {
312 // get the DC to use and create renderer on it
313 wxPaintDC dc(this);
314 wxControlRenderer renderer(this, dc, m_renderer);
315
316 // draw the control
317 DoDraw(&renderer);
318 }
319 }
320
321 // the event handler executed when the window background must be painted
322 void wxWindow::OnErase(wxEraseEvent& event)
323 {
324 if ( !m_renderer )
325 {
326 event.Skip();
327
328 return;
329 }
330
331 DoDrawBackground(*event.GetDC());
332
333 #if wxUSE_SCROLLBAR
334 // if we have both scrollbars, we also have a square in the corner between
335 // them which we must paint
336 if ( m_scrollbarVert && m_scrollbarHorz )
337 {
338 wxSize size = GetSize();
339 wxRect rectClient = GetClientRect(),
340 rectBorder = m_renderer->GetBorderDimensions(GetBorder());
341
342 wxRect rectCorner;
343 rectCorner.x = rectClient.GetRight() + 1;
344 rectCorner.y = rectClient.GetBottom() + 1;
345 rectCorner.SetRight(size.x - rectBorder.width);
346 rectCorner.SetBottom(size.y - rectBorder.height);
347
348 if ( GetUpdateRegion().Contains(rectCorner) )
349 {
350 m_renderer->DrawScrollCorner(*event.GetDC(), rectCorner);
351 }
352 }
353 #endif // wxUSE_SCROLLBAR
354 }
355
356 bool wxWindow::DoDrawBackground(wxDC& dc)
357 {
358 wxRect rect;
359
360 wxSize size = GetSize(); // Why not GetClientSize() ?
361 rect.x = 0;
362 rect.y = 0;
363 rect.width = size.x;
364 rect.height = size.y;
365
366 wxWindow * const parent = GetParent();
367 if ( HasTransparentBackground() && !UseBgCol() && parent )
368 {
369 // DirectFB paints the parent first, then its child windows, so by
370 // the time this code is called, parent's background was already
371 // drawn and there's no point in (imperfectly!) duplicating the work
372 // here:
373 #ifndef __WXDFB__
374 wxASSERT( !IsTopLevel() );
375
376 wxPoint pos = GetPosition();
377
378 AdjustForParentClientOrigin( pos.x, pos.y, 0 );
379
380 // Adjust DC logical origin
381 wxCoord org_x, org_y, x, y;
382 dc.GetLogicalOrigin( &org_x, &org_y );
383 x = org_x + pos.x;
384 y = org_y + pos.y;
385 dc.SetLogicalOrigin( x, y );
386
387 // Adjust draw rect
388 rect.x = pos.x;
389 rect.y = pos.y;
390
391 // Let parent draw the background
392 parent->EraseBackground( dc, rect );
393
394 // Restore DC logical origin
395 dc.SetLogicalOrigin( org_x, org_y );
396 #endif // !__WXDFB__
397 }
398 else
399 {
400 // Draw background ourselves
401 EraseBackground( dc, rect );
402 }
403
404 return true;
405 }
406
407 void wxWindow::EraseBackground(wxDC& dc, const wxRect& rect)
408 {
409 if ( GetBackgroundBitmap().Ok() )
410 {
411 // Get the bitmap and the flags
412 int alignment;
413 wxStretch stretch;
414 wxBitmap bmp = GetBackgroundBitmap(&alignment, &stretch);
415 wxControlRenderer::DrawBitmap(dc, bmp, rect, alignment, stretch);
416 }
417 else
418 {
419 // Just fill it with bg colour if no bitmap
420
421 m_renderer->DrawBackground(dc, wxTHEME_BG_COLOUR(this),
422 rect, GetStateFlags());
423 }
424 }
425
426 void wxWindow::DoDrawBorder(wxDC& dc, const wxRect& rect)
427 {
428 // draw outline unless the update region is enitrely inside it in which
429 // case we don't need to do it
430 #if 0 // doesn't seem to work, why?
431 if ( wxRegion(rect).Contains(GetUpdateRegion().GetBox()) != wxInRegion )
432 #endif
433 {
434 m_renderer->DrawBorder(dc, GetBorder(), rect, GetStateFlags());
435 }
436 }
437
438 void wxWindow::DoDraw(wxControlRenderer * WXUNUSED(renderer))
439 {
440 }
441
442 void wxWindow::Refresh(bool eraseBackground, const wxRect *rect)
443 {
444 wxRect rectClient; // the same rectangle in client coordinates
445 wxPoint origin = GetClientAreaOrigin();
446
447 wxSize size = GetClientSize();
448
449 if ( rect )
450 {
451 // the rectangle passed as argument is in client coordinates
452 rectClient = *rect;
453
454 // don't refresh anything beyond the client area (scrollbars for
455 // example)
456 if ( rectClient.GetRight() > size.x )
457 rectClient.SetRight(size.x);
458 if ( rectClient.GetBottom() > size.y )
459 rectClient.SetBottom(size.y);
460
461 }
462 else // refresh the entire client area
463 {
464 // x,y is already set to 0 by default
465 rectClient.SetSize(size);
466 }
467
468 // convert refresh rectangle to window coordinates:
469 wxRect rectWin(rectClient);
470 rectWin.Offset(origin);
471
472 // debugging helper
473 #ifdef WXDEBUG_REFRESH
474 static bool s_refreshDebug = false;
475 if ( s_refreshDebug )
476 {
477 wxWindowDC dc(this);
478 dc.SetBrush(*wxCYAN_BRUSH);
479 dc.SetPen(*wxTRANSPARENT_PEN);
480 dc.DrawRectangle(rectWin);
481
482 // under Unix we use "--sync" X option for this
483 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
484 ::GdiFlush();
485 ::Sleep(200);
486 #endif // __WXMSW__
487 }
488 #endif // WXDEBUG_REFRESH
489
490 wxWindowNative::Refresh(eraseBackground, &rectWin);
491
492 // Refresh all sub controls if any.
493 wxWindowList& children = GetChildren();
494 for ( wxWindowList::iterator i = children.begin(); i != children.end(); ++i )
495 {
496 wxWindow *child = *i;
497 // only refresh subcontrols if they are visible:
498 if ( child->IsTopLevel() || !child->IsShown() || child->IsFrozen() )
499 continue;
500
501 // ...and when the subcontrols are in the update region:
502 wxRect childrect(child->GetRect());
503 childrect.Intersect(rectClient);
504 if ( childrect.IsEmpty() )
505 continue;
506
507 // refresh the subcontrol now:
508 childrect.Offset(-child->GetPosition());
509 // NB: We must call wxWindowNative version because we need to refresh
510 // the entire control, not just its client area, and this is why we
511 // don't account for child client area origin here neither. Also
512 // note that we don't pass eraseBackground to the child, but use
513 // true instead: this is because we can't be sure that
514 // eraseBackground=false is safe for children as well and not only
515 // for the parent.
516 child->wxWindowNative::Refresh(eraseBackground, &childrect);
517 }
518 }
519
520 // ----------------------------------------------------------------------------
521 // state flags
522 // ----------------------------------------------------------------------------
523
524 bool wxWindow::Enable(bool enable)
525 {
526 if ( !wxWindowNative::Enable(enable) )
527 return false;
528
529 // disabled window can't keep focus
530 if ( FindFocus() == this && GetParent() != NULL )
531 {
532 GetParent()->SetFocus();
533 }
534
535 if ( m_renderer )
536 {
537 // a window with renderer is drawn by ourselves and it has to be
538 // refreshed to reflect its new status
539 Refresh();
540 }
541
542 return true;
543 }
544
545 bool wxWindow::IsFocused() const
546 {
547 return FindFocus() == this;
548 }
549
550 bool wxWindow::IsPressed() const
551 {
552 return false;
553 }
554
555 bool wxWindow::IsDefault() const
556 {
557 return false;
558 }
559
560 bool wxWindow::IsCurrent() const
561 {
562 return m_isCurrent;
563 }
564
565 bool wxWindow::SetCurrent(bool doit)
566 {
567 if ( doit == m_isCurrent )
568 return false;
569
570 m_isCurrent = doit;
571
572 if ( CanBeHighlighted() )
573 Refresh();
574
575 return true;
576 }
577
578 int wxWindow::GetStateFlags() const
579 {
580 int flags = 0;
581 if ( !IsEnabled() )
582 flags |= wxCONTROL_DISABLED;
583
584 // the following states are only possible if our application is active - if
585 // it is not, even our default/focused controls shouldn't appear as such
586 if ( wxTheApp->IsActive() )
587 {
588 if ( IsCurrent() )
589 flags |= wxCONTROL_CURRENT;
590 if ( IsFocused() )
591 flags |= wxCONTROL_FOCUSED;
592 if ( IsPressed() )
593 flags |= wxCONTROL_PRESSED;
594 if ( IsDefault() )
595 flags |= wxCONTROL_ISDEFAULT;
596 }
597
598 return flags;
599 }
600
601 // ----------------------------------------------------------------------------
602 // size
603 // ----------------------------------------------------------------------------
604
605 void wxWindow::OnSize(wxSizeEvent& event)
606 {
607 event.Skip();
608
609 #if wxUSE_SCROLLBAR
610 if ( m_scrollbarVert || m_scrollbarHorz )
611 {
612 PositionScrollbars();
613 }
614 #endif // wxUSE_SCROLLBAR
615
616 #if 0 // ndef __WXMSW__
617 // Refresh the area (strip) previously occupied by the border
618
619 if ( !HasFlag(wxFULL_REPAINT_ON_RESIZE) && IsShown() )
620 {
621 // This code assumes that wxSizeEvent.GetSize() returns
622 // the area of the entire window, not just the client
623 // area.
624 wxSize newSize = event.GetSize();
625
626 if (m_oldSize.x == wxDefaultCoord && m_oldSize.y == wxDefaultCoord)
627 {
628 m_oldSize = newSize;
629 return;
630 }
631
632 if (HasFlag( wxSIMPLE_BORDER ))
633 {
634 if (newSize.y > m_oldSize.y)
635 {
636 wxRect rect;
637 rect.x = 0;
638 rect.width = m_oldSize.x;
639 rect.y = m_oldSize.y-2;
640 rect.height = 1;
641 Refresh( true, &rect );
642 }
643 else if (newSize.y < m_oldSize.y)
644 {
645 wxRect rect;
646 rect.y = newSize.y;
647 rect.x = 0;
648 rect.height = 1;
649 rect.width = newSize.x;
650 wxWindowNative::Refresh( true, &rect );
651 }
652
653 if (newSize.x > m_oldSize.x)
654 {
655 wxRect rect;
656 rect.y = 0;
657 rect.height = m_oldSize.y;
658 rect.x = m_oldSize.x-2;
659 rect.width = 1;
660 Refresh( true, &rect );
661 }
662 else if (newSize.x < m_oldSize.x)
663 {
664 wxRect rect;
665 rect.x = newSize.x;
666 rect.y = 0;
667 rect.width = 1;
668 rect.height = newSize.y;
669 wxWindowNative::Refresh( true, &rect );
670 }
671 }
672 else
673 if (HasFlag( wxSUNKEN_BORDER ) || HasFlag( wxRAISED_BORDER ) || HasFlag( wxBORDER_THEME ))
674 {
675 if (newSize.y > m_oldSize.y)
676 {
677 wxRect rect;
678 rect.x = 0;
679 rect.width = m_oldSize.x;
680 rect.y = m_oldSize.y-4;
681 rect.height = 2;
682 Refresh( true, &rect );
683 }
684 else if (newSize.y < m_oldSize.y)
685 {
686 wxRect rect;
687 rect.y = newSize.y;
688 rect.x = 0;
689 rect.height = 2;
690 rect.width = newSize.x;
691 wxWindowNative::Refresh( true, &rect );
692 }
693
694 if (newSize.x > m_oldSize.x)
695 {
696 wxRect rect;
697 rect.y = 0;
698 rect.height = m_oldSize.y;
699 rect.x = m_oldSize.x-4;
700 rect.width = 2;
701 Refresh( true, &rect );
702 }
703 else if (newSize.x < m_oldSize.x)
704 {
705 wxRect rect;
706 rect.x = newSize.x;
707 rect.y = 0;
708 rect.width = 2;
709 rect.height = newSize.y;
710 wxWindowNative::Refresh( true, &rect );
711 }
712 }
713
714 m_oldSize = newSize;
715 }
716 #endif
717 }
718
719 wxSize wxWindow::DoGetBestSize() const
720 {
721 return AdjustSize(DoGetBestClientSize());
722 }
723
724 wxSize wxWindow::DoGetBestClientSize() const
725 {
726 return wxWindowNative::DoGetBestSize();
727 }
728
729 wxSize wxWindow::AdjustSize(const wxSize& size) const
730 {
731 wxSize sz = size;
732 if ( m_renderer )
733 m_renderer->AdjustSize(&sz, this);
734 return sz;
735 }
736
737 wxPoint wxWindow::GetClientAreaOrigin() const
738 {
739 wxPoint pt = wxWindowBase::GetClientAreaOrigin();
740
741 #if wxUSE_TWO_WINDOWS
742 #else
743 if ( m_renderer )
744 pt += m_renderer->GetBorderDimensions(GetBorder()).GetPosition();
745 #endif
746
747 return pt;
748 }
749
750 void wxWindow::DoGetClientSize(int *width, int *height) const
751 {
752 // if it is a native window, we assume it handles the scrollbars itself
753 // too - and if it doesn't, there is not much we can do
754 if ( !m_renderer )
755 {
756 wxWindowNative::DoGetClientSize(width, height);
757
758 return;
759 }
760
761 int w, h;
762 wxWindowNative::DoGetClientSize(&w, &h);
763
764 // we assume that the scrollbars are positioned correctly (by a previous
765 // call to PositionScrollbars()) here
766
767 wxRect rectBorder;
768 if ( m_renderer )
769 rectBorder = m_renderer->GetBorderDimensions(GetBorder());
770
771 if ( width )
772 {
773 #if wxUSE_SCROLLBAR
774 // in any case, take account of the scrollbar
775 if ( m_scrollbarVert )
776 w -= m_scrollbarVert->GetSize().x;
777 #endif // wxUSE_SCROLLBAR
778
779 // account for the left and right borders
780 *width = w - rectBorder.x - rectBorder.width;
781
782 // we shouldn't return invalid width
783 if ( *width < 0 )
784 *width = 0;
785 }
786
787 if ( height )
788 {
789 #if wxUSE_SCROLLBAR
790 if ( m_scrollbarHorz )
791 h -= m_scrollbarHorz->GetSize().y;
792 #endif // wxUSE_SCROLLBAR
793
794 *height = h - rectBorder.y - rectBorder.height;
795
796 // we shouldn't return invalid height
797 if ( *height < 0 )
798 *height = 0;
799 }
800 }
801
802 void wxWindow::DoSetClientSize(int width, int height)
803 {
804 // take into account the borders
805 wxRect rectBorder = m_renderer->GetBorderDimensions(GetBorder());
806 width += rectBorder.x;
807 height += rectBorder.y;
808
809 // and the scrollbars (as they may be offset into the border, use the
810 // scrollbar position, not size - this supposes that PositionScrollbars()
811 // had been called before)
812 wxSize size = GetSize();
813 #if wxUSE_SCROLLBAR
814 if ( m_scrollbarVert )
815 width += size.x - m_scrollbarVert->GetPosition().x;
816 #endif // wxUSE_SCROLLBAR
817 width += rectBorder.width;
818
819 #if wxUSE_SCROLLBAR
820 if ( m_scrollbarHorz )
821 height += size.y - m_scrollbarHorz->GetPosition().y;
822 #endif // wxUSE_SCROLLBAR
823 height += rectBorder.height;
824
825 wxWindowNative::DoSetClientSize(width, height);
826 }
827
828 wxHitTest wxWindow::DoHitTest(wxCoord x, wxCoord y) const
829 {
830 wxHitTest ht = wxWindowNative::DoHitTest(x, y);
831
832 #if wxUSE_SCROLLBAR
833 if ( ht == wxHT_WINDOW_INSIDE )
834 {
835 if ( m_scrollbarVert && x >= m_scrollbarVert->GetPosition().x )
836 {
837 // it can still be changed below because it may also be the corner
838 ht = wxHT_WINDOW_VERT_SCROLLBAR;
839 }
840
841 if ( m_scrollbarHorz && y >= m_scrollbarHorz->GetPosition().y )
842 {
843 ht = ht == wxHT_WINDOW_VERT_SCROLLBAR ? wxHT_WINDOW_CORNER
844 : wxHT_WINDOW_HORZ_SCROLLBAR;
845 }
846 }
847 #endif // wxUSE_SCROLLBAR
848
849 return ht;
850 }
851
852 // ----------------------------------------------------------------------------
853 // scrolling: we implement it entirely ourselves except for ScrollWindow()
854 // function which is supposed to be (efficiently) implemented by the native
855 // window class
856 // ----------------------------------------------------------------------------
857
858 void wxWindow::RefreshScrollbars()
859 {
860 #if wxUSE_SCROLLBAR
861 if ( m_scrollbarHorz )
862 m_scrollbarHorz->Refresh();
863
864 if ( m_scrollbarVert )
865 m_scrollbarVert->Refresh();
866 #endif // wxUSE_SCROLLBAR
867 }
868
869 void wxWindow::PositionScrollbars()
870 {
871 #if wxUSE_SCROLLBAR
872 // do not use GetClientSize/Rect as it relies on the scrollbars being
873 // correctly positioned
874
875 wxSize size = GetSize();
876 wxBorder border = GetBorder();
877 wxRect rectBorder = m_renderer->GetBorderDimensions(border);
878 bool inside = m_renderer->AreScrollbarsInsideBorder();
879
880 int height = m_scrollbarHorz ? m_scrollbarHorz->GetSize().y : 0;
881 int width = m_scrollbarVert ? m_scrollbarVert->GetSize().x : 0;
882
883 wxRect rectBar;
884 if ( m_scrollbarVert )
885 {
886 rectBar.x = size.x - width;
887 if ( inside )
888 rectBar.x -= rectBorder.width;
889 rectBar.width = width;
890 rectBar.y = 0;
891 if ( inside )
892 rectBar.y += rectBorder.y;
893 rectBar.height = size.y - height;
894 if ( inside )
895 rectBar.height -= rectBorder.y + rectBorder.height;
896
897 m_scrollbarVert->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
898 }
899
900 if ( m_scrollbarHorz )
901 {
902 rectBar.y = size.y - height;
903 if ( inside )
904 rectBar.y -= rectBorder.height;
905 rectBar.height = height;
906 rectBar.x = 0;
907 if ( inside )
908 rectBar.x += rectBorder.x;
909 rectBar.width = size.x - width;
910 if ( inside )
911 rectBar.width -= rectBorder.x + rectBorder.width;
912
913 m_scrollbarHorz->SetSize(rectBar, wxSIZE_NO_ADJUSTMENTS);
914 }
915
916 RefreshScrollbars();
917 #endif // wxUSE_SCROLLBAR
918 }
919
920 void wxWindow::SetScrollbar(int orient,
921 int pos,
922 int pageSize,
923 int range,
924 bool refresh)
925 {
926 #if wxUSE_SCROLLBAR
927 wxASSERT_MSG( pageSize <= range,
928 _T("page size can't be greater than range") );
929
930 bool hasClientSizeChanged = false;
931 wxScrollBar *scrollbar = GetScrollbar(orient);
932 if ( range && (pageSize < range) )
933 {
934 if ( !scrollbar )
935 {
936 // create it
937 #if wxUSE_TWO_WINDOWS
938 SetInsertIntoMain( true );
939 #endif
940 scrollbar = new wxWindowScrollBar(this, wxID_ANY,
941 wxDefaultPosition, wxDefaultSize,
942 orient & wxVERTICAL ? wxSB_VERTICAL
943 : wxSB_HORIZONTAL);
944 #if wxUSE_TWO_WINDOWS
945 SetInsertIntoMain( false );
946 #endif
947 if ( orient & wxVERTICAL )
948 m_scrollbarVert = scrollbar;
949 else
950 m_scrollbarHorz = scrollbar;
951
952 // the client area diminished as we created a scrollbar
953 hasClientSizeChanged = true;
954
955 PositionScrollbars();
956 }
957 else if ( GetWindowStyle() & wxALWAYS_SHOW_SB )
958 {
959 // we might have disabled it before
960 scrollbar->Enable();
961 }
962
963 scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
964 }
965 else // no range means no scrollbar
966 {
967 if ( scrollbar )
968 {
969 // wxALWAYS_SHOW_SB only applies to the vertical scrollbar
970 if ( (orient & wxVERTICAL) && (GetWindowStyle() & wxALWAYS_SHOW_SB) )
971 {
972 // just disable the scrollbar
973 scrollbar->SetScrollbar(pos, pageSize, range, pageSize, refresh);
974 scrollbar->Disable();
975 }
976 else // really remove the scrollbar
977 {
978 delete scrollbar;
979
980 if ( orient & wxVERTICAL )
981 m_scrollbarVert = NULL;
982 else
983 m_scrollbarHorz = NULL;
984
985 // the client area increased as we removed a scrollbar
986 hasClientSizeChanged = true;
987
988 // the size of the remaining scrollbar must be adjusted
989 if ( m_scrollbarHorz || m_scrollbarVert )
990 {
991 PositionScrollbars();
992 }
993 }
994 }
995 }
996
997 // give the window a chance to relayout
998 if ( hasClientSizeChanged )
999 {
1000 #if wxUSE_TWO_WINDOWS
1001 wxWindowNative::SetSize( GetSize() );
1002 #else
1003 wxSizeEvent event(GetSize());
1004 (void)GetEventHandler()->ProcessEvent(event);
1005 #endif
1006 }
1007 #else
1008 wxUnusedVar(orient);
1009 wxUnusedVar(pos);
1010 wxUnusedVar(pageSize);
1011 wxUnusedVar(range);
1012 wxUnusedVar(refresh);
1013 #endif // wxUSE_SCROLLBAR
1014 }
1015
1016 void wxWindow::SetScrollPos(int orient, int pos, bool WXUNUSED(refresh))
1017 {
1018 #if wxUSE_SCROLLBAR
1019 wxScrollBar *scrollbar = GetScrollbar(orient);
1020
1021 if (scrollbar)
1022 scrollbar->SetThumbPosition(pos);
1023
1024 // VZ: I think we can safely ignore this as we always refresh it
1025 // automatically whenever the value chanegs
1026 #if 0
1027 if ( refresh )
1028 Refresh();
1029 #endif
1030 #else
1031 wxUnusedVar(orient);
1032 wxUnusedVar(pos);
1033 #endif // wxUSE_SCROLLBAR
1034 }
1035
1036 int wxWindow::GetScrollPos(int orient) const
1037 {
1038 #if wxUSE_SCROLLBAR
1039 wxScrollBar *scrollbar = GetScrollbar(orient);
1040 return scrollbar ? scrollbar->GetThumbPosition() : 0;
1041 #else
1042 wxUnusedVar(orient);
1043 return 0;
1044 #endif // wxUSE_SCROLLBAR
1045 }
1046
1047 int wxWindow::GetScrollThumb(int orient) const
1048 {
1049 #if wxUSE_SCROLLBAR
1050 wxScrollBar *scrollbar = GetScrollbar(orient);
1051 return scrollbar ? scrollbar->GetThumbSize() : 0;
1052 #else
1053 wxUnusedVar(orient);
1054 return 0;
1055 #endif // wxUSE_SCROLLBAR
1056 }
1057
1058 int wxWindow::GetScrollRange(int orient) const
1059 {
1060 #if wxUSE_SCROLLBAR
1061 wxScrollBar *scrollbar = GetScrollbar(orient);
1062 return scrollbar ? scrollbar->GetRange() : 0;
1063 #else
1064 wxUnusedVar(orient);
1065 return 0;
1066 #endif // wxUSE_SCROLLBAR
1067 }
1068
1069 void wxWindow::ScrollWindow(int dx, int dy, const wxRect *rect)
1070 {
1071 // use native scrolling when available and do it in generic way
1072 // otherwise:
1073 #ifdef __WXX11__
1074
1075 wxWindowNative::ScrollWindow(dx, dy, rect);
1076
1077 #else // !wxX11
1078
1079 // before scrolling it, ensure that we don't have any unpainted areas
1080 Update();
1081
1082 wxRect r;
1083
1084 if ( dx )
1085 {
1086 r = ScrollNoRefresh(dx, 0, rect);
1087 Refresh(true /* erase bkgnd */, &r);
1088 }
1089
1090 if ( dy )
1091 {
1092 r = ScrollNoRefresh(0, dy, rect);
1093 Refresh(true /* erase bkgnd */, &r);
1094 }
1095
1096 // scroll children accordingly:
1097 wxPoint offset(dx, dy);
1098
1099 for (wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1100 node; node = node->GetNext())
1101 {
1102 wxWindow *child = node->GetData();
1103 #if wxUSE_SCROLLBAR
1104 if ( child == m_scrollbarVert || child == m_scrollbarHorz )
1105 continue;
1106 #endif // wxUSE_SCROLLBAR
1107
1108 // VS: Scrolling children has non-trivial semantics. If rect=NULL then
1109 // it is easy: we scroll all children. Otherwise it gets
1110 // complicated:
1111 // 1. if scrolling in one direction only, scroll only
1112 // those children that intersect shaft defined by the rectangle
1113 // and scrolling direction
1114 // 2. if scrolling in both axes, scroll all children
1115
1116 bool shouldMove = false;
1117
1118 if ( rect && (dx * dy == 0 /* moving in only one of x, y axis */) )
1119 {
1120 wxRect childRect = child->GetRect();
1121 if ( dx == 0 && (childRect.GetLeft() <= rect->GetRight() ||
1122 childRect.GetRight() >= rect->GetLeft()) )
1123 {
1124 shouldMove = true;
1125 }
1126 else if ( dy == 0 && (childRect.GetTop() <= rect->GetBottom() ||
1127 childRect.GetBottom() >= rect->GetTop()) )
1128 {
1129 shouldMove = true;
1130 }
1131 // else: child outside of scrolling shaft, don't move
1132 }
1133 else // scrolling in both axes or rect=NULL
1134 {
1135 shouldMove = true;
1136 }
1137
1138 if ( shouldMove )
1139 child->Move(child->GetPosition() + offset, wxSIZE_ALLOW_MINUS_ONE);
1140 }
1141 #endif // wxX11/!wxX11
1142 }
1143
1144 wxRect wxWindow::ScrollNoRefresh(int dx, int dy, const wxRect *rectTotal)
1145 {
1146 wxASSERT_MSG( !dx || !dy, _T("can't be used for diag scrolling") );
1147
1148 // the rect to refresh (which we will calculate)
1149 wxRect rect;
1150
1151 if ( !dx && !dy )
1152 {
1153 // nothing to do
1154 return rect;
1155 }
1156
1157 // calculate the part of the window which we can just redraw in the new
1158 // location
1159 wxSize sizeTotal = rectTotal ? rectTotal->GetSize() : GetClientSize();
1160
1161 wxLogTrace(_T("scroll"), _T("rect is %dx%d, scroll by %d, %d"),
1162 sizeTotal.x, sizeTotal.y, dx, dy);
1163
1164 // the initial and end point of the region we move in client coords
1165 wxPoint ptSource, ptDest;
1166 if ( rectTotal )
1167 {
1168 ptSource = rectTotal->GetPosition();
1169 ptDest = rectTotal->GetPosition();
1170 }
1171
1172 // the size of this region
1173 wxSize size;
1174 size.x = sizeTotal.x - abs(dx);
1175 size.y = sizeTotal.y - abs(dy);
1176 if ( size.x <= 0 || size.y <= 0 )
1177 {
1178 // just redraw everything as nothing of the displayed image will stay
1179 wxLogTrace(_T("scroll"), _T("refreshing everything"));
1180
1181 rect = rectTotal ? *rectTotal : wxRect(0, 0, sizeTotal.x, sizeTotal.y);
1182 }
1183 else // move the part which doesn't change to the new location
1184 {
1185 // note that when we scroll the canvas in some direction we move the
1186 // block which doesn't need to be refreshed in the opposite direction
1187
1188 if ( dx < 0 )
1189 {
1190 // scroll to the right, move to the left
1191 ptSource.x -= dx;
1192 }
1193 else
1194 {
1195 // scroll to the left, move to the right
1196 ptDest.x += dx;
1197 }
1198
1199 if ( dy < 0 )
1200 {
1201 // scroll down, move up
1202 ptSource.y -= dy;
1203 }
1204 else
1205 {
1206 // scroll up, move down
1207 ptDest.y += dy;
1208 }
1209
1210 #if wxUSE_CARET
1211 // we need to hide the caret before moving or it will erase itself at
1212 // the wrong (old) location
1213 wxCaret *caret = GetCaret();
1214 if ( caret )
1215 caret->Hide();
1216 #endif // wxUSE_CARET
1217
1218 // do move
1219 wxClientDC dc(this);
1220 wxBitmap bmp(size.x, size.y);
1221 wxMemoryDC dcMem;
1222 dcMem.SelectObject(bmp);
1223
1224 dcMem.Blit(wxPoint(0,0), size, &dc, ptSource
1225 #if defined(__WXGTK__) && !defined(wxHAS_WORKING_GTK_DC_BLIT)
1226 + GetClientAreaOrigin()
1227 #endif // broken wxGTK wxDC::Blit
1228 );
1229 dc.Blit(ptDest, size, &dcMem, wxPoint(0,0));
1230
1231 wxLogTrace(_T("scroll"),
1232 _T("Blit: (%d, %d) of size %dx%d -> (%d, %d)"),
1233 ptSource.x, ptSource.y,
1234 size.x, size.y,
1235 ptDest.x, ptDest.y);
1236
1237 // and now repaint the uncovered area
1238
1239 // FIXME: We repaint the intersection of these rectangles twice - is
1240 // it bad? I don't think so as it is rare to scroll the window
1241 // diagonally anyhow and so adding extra logic to compute
1242 // rectangle intersection is probably not worth the effort
1243
1244 rect.x = ptSource.x;
1245 rect.y = ptSource.y;
1246
1247 if ( dx )
1248 {
1249 if ( dx < 0 )
1250 {
1251 // refresh the area along the right border
1252 rect.x += size.x + dx;
1253 rect.width = -dx;
1254 }
1255 else
1256 {
1257 // refresh the area along the left border
1258 rect.width = dx;
1259 }
1260
1261 rect.height = sizeTotal.y;
1262
1263 wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1264 rect.x, rect.y,
1265 rect.GetRight() + 1, rect.GetBottom() + 1);
1266 }
1267
1268 if ( dy )
1269 {
1270 if ( dy < 0 )
1271 {
1272 // refresh the area along the bottom border
1273 rect.y += size.y + dy;
1274 rect.height = -dy;
1275 }
1276 else
1277 {
1278 // refresh the area along the top border
1279 rect.height = dy;
1280 }
1281
1282 rect.width = sizeTotal.x;
1283
1284 wxLogTrace(_T("scroll"), _T("refreshing (%d, %d)-(%d, %d)"),
1285 rect.x, rect.y,
1286 rect.GetRight() + 1, rect.GetBottom() + 1);
1287 }
1288
1289 #if wxUSE_CARET
1290 if ( caret )
1291 caret->Show();
1292 #endif // wxUSE_CARET
1293 }
1294
1295 return rect;
1296 }
1297
1298 // ----------------------------------------------------------------------------
1299 // accelerators and menu hot keys
1300 // ----------------------------------------------------------------------------
1301
1302 #if wxUSE_MENUS
1303 // the last window over which Alt was pressed (used by OnKeyUp)
1304 wxWindow *wxWindow::ms_winLastAltPress = NULL;
1305 #endif // wxUSE_MENUS
1306
1307 #if wxUSE_ACCEL || wxUSE_MENUS
1308
1309 void wxWindow::OnKeyDown(wxKeyEvent& event)
1310 {
1311 #if wxUSE_MENUS
1312 int key = event.GetKeyCode();
1313 if ( !event.ControlDown() && (key == WXK_ALT || key == WXK_F10) )
1314 {
1315 ms_winLastAltPress = this;
1316
1317 // it can't be an accel anyhow
1318 return;
1319 }
1320
1321 ms_winLastAltPress = NULL;
1322 #endif // wxUSE_MENUS
1323
1324 #if wxUSE_ACCEL
1325 for ( wxWindow *win = this; win; win = win->GetParent() )
1326 {
1327 int command = win->GetAcceleratorTable()->GetCommand(event);
1328 if ( command != -1 )
1329 {
1330 wxCommandEvent eventCmd(wxEVT_COMMAND_MENU_SELECTED, command);
1331 if ( win->GetEventHandler()->ProcessEvent(eventCmd) )
1332 {
1333 // skip "event.Skip()" below
1334 return;
1335 }
1336 }
1337
1338 if ( win->IsTopLevel() )
1339 {
1340 // try the frame menu bar
1341 #if wxUSE_MENUS
1342 wxFrame *frame = wxDynamicCast(win, wxFrame);
1343 if ( frame )
1344 {
1345 wxMenuBar *menubar = frame->GetMenuBar();
1346 if ( menubar && menubar->ProcessAccelEvent(event) )
1347 {
1348 // skip "event.Skip()" below
1349 return;
1350 }
1351 }
1352 #endif // wxUSE_MENUS
1353
1354 #if wxUSE_BUTTON
1355 // if it wasn't in a menu, try to find a button
1356 if ( command != -1 )
1357 {
1358 wxWindow* child = win->FindWindow(command);
1359 if ( child && wxDynamicCast(child, wxButton) )
1360 {
1361 wxCommandEvent eventCmd(wxEVT_COMMAND_BUTTON_CLICKED, command);
1362 eventCmd.SetEventObject(child);
1363 if ( child->GetEventHandler()->ProcessEvent(eventCmd) )
1364 {
1365 // skip "event.Skip()" below
1366 return;
1367 }
1368 }
1369 }
1370 #endif // wxUSE_BUTTON
1371
1372 // don't propagate accels from the child frame to the parent one
1373 break;
1374 }
1375 }
1376 #endif // wxUSE_ACCEL
1377
1378 event.Skip();
1379 }
1380
1381 #endif // wxUSE_ACCEL
1382
1383 #if wxUSE_MENUS
1384
1385 wxMenuBar *wxWindow::GetParentFrameMenuBar() const
1386 {
1387 for ( const wxWindow *win = this; win; win = win->GetParent() )
1388 {
1389 if ( win->IsTopLevel() )
1390 {
1391 wxFrame *frame = wxDynamicCast(win, wxFrame);
1392 if ( frame )
1393 {
1394 return frame->GetMenuBar();
1395 }
1396
1397 // don't look further - we don't want to return the menubar of the
1398 // parent frame
1399 break;
1400 }
1401 }
1402
1403 return NULL;
1404 }
1405
1406 void wxWindow::OnChar(wxKeyEvent& event)
1407 {
1408 if ( event.AltDown() && !event.ControlDown() )
1409 {
1410 int key = event.GetKeyCode();
1411
1412 wxMenuBar *menubar = GetParentFrameMenuBar();
1413 if ( menubar )
1414 {
1415 int item = menubar->FindNextItemForAccel(-1, key);
1416 if ( item != -1 )
1417 {
1418 menubar->PopupMenu((size_t)item);
1419
1420 // skip "event.Skip()" below
1421 return;
1422 }
1423 }
1424 }
1425
1426 // if Return was pressed, see if there's a default button to activate
1427 if ( !event.HasModifiers() && event.GetKeyCode() == WXK_RETURN )
1428 {
1429 wxTopLevelWindow *
1430 tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
1431 if ( tlw )
1432 {
1433 wxButton *btn = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
1434 if ( btn )
1435 {
1436 wxCommandEvent evt(wxEVT_COMMAND_BUTTON_CLICKED, btn->GetId());
1437 evt.SetEventObject(btn);
1438 btn->Command(evt);
1439 return;
1440 }
1441 }
1442 }
1443
1444
1445 event.Skip();
1446 }
1447
1448 void wxWindow::OnKeyUp(wxKeyEvent& event)
1449 {
1450 int key = event.GetKeyCode();
1451 if ( !event.HasModifiers() && (key == WXK_ALT || key == WXK_F10) )
1452 {
1453 // only process Alt release specially if there were no other key
1454 // presses since Alt had been pressed and if both events happened in
1455 // the same window
1456 if ( ms_winLastAltPress == this )
1457 {
1458 wxMenuBar *menubar = GetParentFrameMenuBar();
1459 if ( menubar && this != menubar )
1460 {
1461 menubar->SelectMenu(0);
1462 }
1463 }
1464 }
1465 else
1466 {
1467 event.Skip();
1468 }
1469
1470 // in any case reset it
1471 ms_winLastAltPress = NULL;
1472 }
1473
1474 #endif // wxUSE_MENUS
1475
1476 // ----------------------------------------------------------------------------
1477 // MSW-specific section
1478 // ----------------------------------------------------------------------------
1479
1480 #ifdef __WXMSW__
1481
1482 #include "wx/msw/private.h"
1483
1484 WXLRESULT wxWindow::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1485 {
1486 if ( message == WM_NCHITTEST )
1487 {
1488 // the windows which contain the other windows should let the mouse
1489 // events through, otherwise a window inside a static box would
1490 // never get any events at all
1491 if ( IsStaticBox() )
1492 {
1493 return HTTRANSPARENT;
1494 }
1495 }
1496
1497 return wxWindowNative::MSWWindowProc(message, wParam, lParam);
1498 }
1499
1500 #endif // __WXMSW__