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[wxWidgets.git] / src / generic / treectrl.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: treectrl.cpp
3 // Purpose: generic tree control implementation
4 // Author: Robert Roebling
5 // Created: 01/02/97
6 // Modified: 22/10/98 - almost total rewrite, simpler interface (VZ)
7 // Id: $Id$
8 // Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // =============================================================================
13 // declarations
14 // =============================================================================
15
16 // -----------------------------------------------------------------------------
17 // headers
18 // -----------------------------------------------------------------------------
19
20 #ifdef __GNUG__
21 #pragma implementation "treectrl.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 #include "wx/generic/treectrl.h"
32 #include "wx/generic/imaglist.h"
33 #include "wx/settings.h"
34 #include "wx/log.h"
35 #include "wx/intl.h"
36 #include "wx/dynarray.h"
37 #include "wx/arrimpl.cpp"
38 #include "wx/dcclient.h"
39 #include "wx/msgdlg.h"
40
41 // -----------------------------------------------------------------------------
42 // array types
43 // -----------------------------------------------------------------------------
44
45 class WXDLLEXPORT wxGenericTreeItem;
46
47 WX_DEFINE_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
48 WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
49
50 // -----------------------------------------------------------------------------
51 // private classes
52 // -----------------------------------------------------------------------------
53
54 // a tree item
55 class WXDLLEXPORT wxGenericTreeItem
56 {
57 public:
58 // ctors & dtor
59 wxGenericTreeItem() { m_data = NULL; }
60 wxGenericTreeItem( wxGenericTreeItem *parent,
61 const wxString& text,
62 wxDC& dc,
63 int image, int selImage,
64 wxTreeItemData *data );
65
66 ~wxGenericTreeItem();
67
68 // trivial accessors
69 wxArrayGenericTreeItems& GetChildren() { return m_children; }
70
71 const wxString& GetText() const { return m_text; }
72 int GetImage() const { return m_image; }
73 int GetSelectedImage() const { return m_selImage; }
74 wxTreeItemData *GetData() const { return m_data; }
75
76 void SetText( const wxString &text );
77 void SetImage(int image) { m_image = image; }
78 void SetSelectedImage(int image) { m_selImage = image; }
79 void SetData(wxTreeItemData *data) { m_data = data; }
80
81 void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
82
83 void SetBold(bool bold) { m_isBold = bold; }
84
85 int GetX() const { return m_x; }
86 int GetY() const { return m_y; }
87
88 void SetX(int x) { m_x = x; }
89 void SetY(int y) { m_y = y; }
90
91 int GetHeight() const { return m_height; }
92 int GetWidth() const { return m_width; }
93
94 void SetHeight(int h) { m_height = h; }
95 void SetWidth(int w) { m_width = w; }
96
97
98 wxGenericTreeItem *GetParent() const { return m_parent; }
99
100 // operations
101 // deletes all children notifying the treectrl about it if !NULL pointer
102 // given
103 void DeleteChildren(wxTreeCtrl *tree = NULL);
104 // FIXME don't know what is it for
105 void Reset();
106
107 // get count of all children (and grand children if 'recursively')
108 size_t GetChildrenCount(bool recursively = TRUE) const;
109
110 void Insert(wxGenericTreeItem *child, size_t index)
111 { m_children.Insert(child, index); }
112
113 void SetCross( int x, int y );
114 void GetSize( int &x, int &y, const wxTreeCtrl* );
115
116 // return the item at given position (or NULL if no item), onButton is TRUE
117 // if the point belongs to the item's button, otherwise it lies on the
118 // button's label
119 wxGenericTreeItem *HitTest( const wxPoint& point, const wxTreeCtrl *, int &flags);
120
121 void Expand() { m_isCollapsed = FALSE; }
122 void Collapse() { m_isCollapsed = TRUE; }
123
124 void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
125
126 // status inquiries
127 bool HasChildren() const { return !m_children.IsEmpty(); }
128 bool HasHilight() const { return m_hasHilight; }
129 bool IsExpanded() const { return !m_isCollapsed; }
130 bool HasPlus() const { return m_hasPlus || HasChildren(); }
131 bool IsBold() const { return m_isBold; }
132
133 private:
134 wxString m_text;
135
136 int m_image,
137 m_selImage;
138
139 wxTreeItemData *m_data;
140
141 // use bitfields to save size
142 int m_isCollapsed :1;
143 int m_hasHilight :1; // same as focused
144 int m_hasPlus :1; // used for item which doesn't have
145 // children but still has a [+] button
146 int m_isBold :1; // render the label in bold font
147
148 int m_x, m_y;
149 long m_height, m_width;
150 int m_xCross, m_yCross;
151 int m_level;
152 wxArrayGenericTreeItems m_children;
153 wxGenericTreeItem *m_parent;
154 };
155
156 // =============================================================================
157 // implementation
158 // =============================================================================
159
160 #define PIXELS_PER_UNIT 10
161 // -----------------------------------------------------------------------------
162 // wxTreeEvent
163 // -----------------------------------------------------------------------------
164
165 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
166
167 wxTreeEvent::wxTreeEvent( wxEventType commandType, int id )
168 : wxNotifyEvent( commandType, id )
169 {
170 m_code = 0;
171 m_itemOld = (wxGenericTreeItem *)NULL;
172 }
173
174 // -----------------------------------------------------------------------------
175 // wxGenericTreeItem
176 // -----------------------------------------------------------------------------
177
178 wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
179 const wxString& text,
180 wxDC& dc,
181 int image, int selImage,
182 wxTreeItemData *data)
183 : m_text(text)
184 {
185 m_image = image;
186 m_selImage = selImage;
187 m_data = data;
188 m_x = m_y = 0;
189 m_xCross = m_yCross = 0;
190
191 m_level = 0;
192
193 m_isCollapsed = TRUE;
194 m_hasHilight = FALSE;
195 m_hasPlus = FALSE;
196 m_isBold = FALSE;
197
198 m_parent = parent;
199
200 dc.GetTextExtent( m_text, &m_width, &m_height );
201 // TODO : Add the width of the image
202 // PB : We don't know which image is shown (image, selImage)
203 // We don't even know imageList from the treectrl this item belongs to !!!
204 // At this point m_width doesn't mean much, this can be remove !
205 }
206
207 wxGenericTreeItem::~wxGenericTreeItem()
208 {
209 delete m_data;
210
211 wxASSERT_MSG( m_children.IsEmpty(),
212 _T("please call DeleteChildren() before deleting the item") );
213 }
214
215 void wxGenericTreeItem::DeleteChildren(wxTreeCtrl *tree)
216 {
217 size_t count = m_children.Count();
218 for ( size_t n = 0; n < count; n++ )
219 {
220 wxGenericTreeItem *child = m_children[n];
221 if ( tree )
222 {
223 tree->SendDeleteEvent(child);
224 }
225
226 child->DeleteChildren(tree);
227 delete child;
228 }
229
230 m_children.Empty();
231 }
232
233 void wxGenericTreeItem::SetText( const wxString &text )
234 {
235 m_text = text;
236 }
237
238 void wxGenericTreeItem::Reset()
239 {
240 m_text.Empty();
241 m_image =
242 m_selImage = -1;
243 m_data = NULL;
244 m_x = m_y =
245 m_height = m_width = 0;
246 m_xCross =
247 m_yCross = 0;
248
249 m_level = 0;
250
251 DeleteChildren();
252 m_isCollapsed = TRUE;
253
254 m_parent = (wxGenericTreeItem *)NULL;
255 }
256
257 size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
258 {
259 size_t count = m_children.Count();
260 if ( !recursively )
261 return count;
262
263 size_t total = count;
264 for ( size_t n = 0; n < count; ++n )
265 {
266 total += m_children[n]->GetChildrenCount();
267 }
268
269 return total;
270 }
271
272 void wxGenericTreeItem::SetCross( int x, int y )
273 {
274 m_xCross = x;
275 m_yCross = y;
276 }
277
278 void wxGenericTreeItem::GetSize( int &x, int &y, const wxTreeCtrl *theTree )
279 {
280 int bottomY=m_y+theTree->GetLineHeight(this);
281 if ( y < bottomY ) y = bottomY;
282 int width = m_x + m_width;
283 if ( x < width ) x = width;
284
285 if (IsExpanded())
286 {
287 size_t count = m_children.Count();
288 for ( size_t n = 0; n < count; ++n )
289 {
290 m_children[n]->GetSize( x, y, theTree );
291 }
292 }
293 }
294
295 wxGenericTreeItem *wxGenericTreeItem::HitTest( const wxPoint& point,
296 const wxTreeCtrl *theTree,
297 int &flags)
298 {
299 if ((point.y > m_y) && (point.y < m_y + theTree->GetLineHeight(this)))
300 {
301 if (point.y<m_y+theTree->GetLineHeight(this)/2) flags|=wxTREE_HITTEST_ONITEMUPPERPART;
302 else flags|=wxTREE_HITTEST_ONITEMLOWERPART;
303
304 // FIXME why +5?
305 // Because that is the size of the plus sign, RR
306 if ((point.x > m_xCross-5) && (point.x < m_xCross+5) &&
307 (point.y > m_yCross-5) && (point.y < m_yCross+5) &&
308 (IsExpanded() || HasPlus()))
309 {
310 flags|=wxTREE_HITTEST_ONITEMBUTTON;
311 return this;
312 }
313
314 if ((point.x >= m_x) && (point.x <= m_x+m_width))
315 {
316 int image_w = -1;
317 int image_h;
318
319 // assuming every image (normal and selected ) has the same size !
320 if (theTree->m_imageListNormal)
321 theTree->m_imageListNormal->GetSize(m_image, image_w, image_h);
322 if ((image_w != -1) && (point.x <= m_x + image_w + 1))
323 flags|=wxTREE_HITTEST_ONITEMICON;
324 else
325 flags|=wxTREE_HITTEST_ONITEMLABEL;
326
327 return this;
328 }
329
330 if (point.x < m_x) flags|=wxTREE_HITTEST_ONITEMIDENT;
331 if (point.x > m_x+m_width) flags|=wxTREE_HITTEST_ONITEMRIGHT;
332
333 return this;
334 }
335 else
336 {
337 if (!m_isCollapsed)
338 {
339 size_t count = m_children.Count();
340 for ( size_t n = 0; n < count; n++ )
341 {
342 wxGenericTreeItem *res = m_children[n]->HitTest( point, theTree, flags );
343 if ( res != NULL )
344 return res;
345 }
346 }
347 }
348
349 flags|=wxTREE_HITTEST_NOWHERE;
350 return NULL;
351 }
352
353 // -----------------------------------------------------------------------------
354 // wxTreeCtrl implementation
355 // -----------------------------------------------------------------------------
356
357 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxScrolledWindow)
358
359 BEGIN_EVENT_TABLE(wxTreeCtrl,wxScrolledWindow)
360 EVT_PAINT (wxTreeCtrl::OnPaint)
361 EVT_MOUSE_EVENTS (wxTreeCtrl::OnMouse)
362 EVT_CHAR (wxTreeCtrl::OnChar)
363 EVT_SET_FOCUS (wxTreeCtrl::OnSetFocus)
364 EVT_KILL_FOCUS (wxTreeCtrl::OnKillFocus)
365 EVT_IDLE (wxTreeCtrl::OnIdle)
366 END_EVENT_TABLE()
367
368 // -----------------------------------------------------------------------------
369 // construction/destruction
370 // -----------------------------------------------------------------------------
371
372 void wxTreeCtrl::Init()
373 {
374 m_current =
375 m_key_current =
376 m_anchor = (wxGenericTreeItem *) NULL;
377 m_hasFocus = FALSE;
378 m_dirty = FALSE;
379
380 m_xScroll = 0;
381 m_yScroll = 0;
382 m_lineHeight = 10;
383 m_indent = 15;
384 m_spacing = 18;
385
386 m_hilightBrush = new wxBrush
387 (
388 wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT),
389 wxSOLID
390 );
391
392 m_imageListNormal =
393 m_imageListState = (wxImageList *) NULL;
394
395 m_dragCount = 0;
396 }
397
398 bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
399 const wxPoint& pos, const wxSize& size,
400 long style,
401 const wxValidator &validator,
402 const wxString& name )
403 {
404 Init();
405
406 wxScrolledWindow::Create( parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name );
407
408 #if wxUSE_VALIDATORS
409 SetValidator( validator );
410 #endif
411
412 SetBackgroundColour( *wxWHITE );
413 m_dottedPen = wxPen( *wxBLACK, 0, 0 );
414
415 return TRUE;
416 }
417
418 wxTreeCtrl::~wxTreeCtrl()
419 {
420 wxDELETE( m_hilightBrush );
421
422 DeleteAllItems();
423 }
424
425 // -----------------------------------------------------------------------------
426 // accessors
427 // -----------------------------------------------------------------------------
428
429 size_t wxTreeCtrl::GetCount() const
430 {
431 return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
432 }
433
434 void wxTreeCtrl::SetIndent(unsigned int indent)
435 {
436 m_indent = indent;
437 m_dirty = TRUE;
438 Refresh();
439 }
440
441 void wxTreeCtrl::SetSpacing(unsigned int spacing)
442 {
443 m_spacing = spacing;
444 m_dirty = TRUE;
445 Refresh();
446 }
447
448 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
449 {
450 wxCHECK_MSG( item.IsOk(), 0u, _T("invalid tree item") );
451
452 return item.m_pItem->GetChildrenCount(recursively);
453 }
454
455 // -----------------------------------------------------------------------------
456 // functions to work with tree items
457 // -----------------------------------------------------------------------------
458
459 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
460 {
461 wxCHECK_MSG( item.IsOk(), _T(""), _T("invalid tree item") );
462
463 return item.m_pItem->GetText();
464 }
465
466 int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const
467 {
468 wxCHECK_MSG( item.IsOk(), -1, _T("invalid tree item") );
469
470 return item.m_pItem->GetImage();
471 }
472
473 int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
474 {
475 wxCHECK_MSG( item.IsOk(), -1, _T("invalid tree item") );
476
477 return item.m_pItem->GetSelectedImage();
478 }
479
480 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
481 {
482 wxCHECK_MSG( item.IsOk(), NULL, _T("invalid tree item") );
483
484 return item.m_pItem->GetData();
485 }
486
487 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
488 {
489 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
490
491 wxClientDC dc(this);
492 wxGenericTreeItem *pItem = item.m_pItem;
493 pItem->SetText(text);
494 CalculateSize(pItem, dc);
495 RefreshLine(pItem);
496 }
497
498 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image)
499 {
500 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
501
502 wxClientDC dc(this);
503 wxGenericTreeItem *pItem = item.m_pItem;
504 pItem->SetImage(image);
505 CalculateSize(pItem, dc);
506 RefreshLine(pItem);
507 }
508
509 void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
510 {
511 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
512
513 wxClientDC dc(this);
514 wxGenericTreeItem *pItem = item.m_pItem;
515 pItem->SetSelectedImage(image);
516 CalculateSize(pItem, dc);
517 RefreshLine(pItem);
518 }
519
520 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
521 {
522 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
523
524 item.m_pItem->SetData(data);
525 }
526
527 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
528 {
529 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
530
531 wxGenericTreeItem *pItem = item.m_pItem;
532 pItem->SetHasPlus(has);
533 RefreshLine(pItem);
534 }
535
536 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
537 {
538 wxCHECK_RET( item.IsOk(), _T("invalid tree item") );
539
540 // avoid redrawing the tree if no real change
541 wxGenericTreeItem *pItem = item.m_pItem;
542 if ( pItem->IsBold() != bold )
543 {
544 pItem->SetBold(bold);
545 RefreshLine(pItem);
546 }
547 }
548
549 // -----------------------------------------------------------------------------
550 // item status inquiries
551 // -----------------------------------------------------------------------------
552
553 bool wxTreeCtrl::IsVisible(const wxTreeItemId& WXUNUSED(item)) const
554 {
555 wxFAIL_MSG(_T("not implemented"));
556
557 return TRUE;
558 }
559
560 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
561 {
562 wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
563
564 return !item.m_pItem->GetChildren().IsEmpty();
565 }
566
567 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
568 {
569 wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
570
571 return item.m_pItem->IsExpanded();
572 }
573
574 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
575 {
576 wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
577
578 return item.m_pItem->HasHilight();
579 }
580
581 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
582 {
583 wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid tree item") );
584
585 return item.m_pItem->IsBold();
586 }
587
588 // -----------------------------------------------------------------------------
589 // navigation
590 // -----------------------------------------------------------------------------
591
592 wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
593 {
594 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
595
596 return item.m_pItem->GetParent();
597 }
598
599 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
600 {
601 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
602
603 cookie = 0;
604 return GetNextChild(item, cookie);
605 }
606
607 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
608 {
609 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
610
611 wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
612 if ( (size_t)cookie < children.Count() )
613 {
614 return children.Item(cookie++);
615 }
616 else
617 {
618 // there are no more of them
619 return wxTreeItemId();
620 }
621 }
622
623 wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
624 {
625 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
626
627 wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
628 return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
629 }
630
631 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
632 {
633 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
634
635 wxGenericTreeItem *i = item.m_pItem;
636 wxGenericTreeItem *parent = i->GetParent();
637 if ( parent == NULL )
638 {
639 // root item doesn't have any siblings
640 return wxTreeItemId();
641 }
642
643 wxArrayGenericTreeItems& siblings = parent->GetChildren();
644 int index = siblings.Index(i);
645 wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
646
647 size_t n = (size_t)(index + 1);
648 return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
649 }
650
651 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
652 {
653 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
654
655 wxGenericTreeItem *i = item.m_pItem;
656 wxGenericTreeItem *parent = i->GetParent();
657 if ( parent == NULL )
658 {
659 // root item doesn't have any siblings
660 return wxTreeItemId();
661 }
662
663 wxArrayGenericTreeItems& siblings = parent->GetChildren();
664 int index = siblings.Index(i);
665 wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
666
667 return index == 0 ? wxTreeItemId()
668 : wxTreeItemId(siblings[(size_t)(index - 1)]);
669 }
670
671 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
672 {
673 wxFAIL_MSG(_T("not implemented"));
674
675 return wxTreeItemId();
676 }
677
678 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
679 {
680 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
681
682 wxFAIL_MSG(_T("not implemented"));
683
684 return wxTreeItemId();
685 }
686
687 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
688 {
689 wxCHECK_MSG( item.IsOk(), wxTreeItemId(), _T("invalid tree item") );
690
691 wxFAIL_MSG(_T("not implemented"));
692
693 return wxTreeItemId();
694 }
695
696 // -----------------------------------------------------------------------------
697 // operations
698 // -----------------------------------------------------------------------------
699
700 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
701 size_t previous,
702 const wxString& text,
703 int image, int selImage,
704 wxTreeItemData *data)
705 {
706 wxGenericTreeItem *parent = parentId.m_pItem;
707 if ( !parent )
708 {
709 // should we give a warning here?
710 return AddRoot(text, image, selImage, data);
711 }
712
713 wxClientDC dc(this);
714 wxGenericTreeItem *item = new wxGenericTreeItem(parent,
715 text, dc,
716 image, selImage,
717 data);
718
719 if ( data != NULL )
720 {
721 data->m_pItem = item;
722 }
723
724 parent->Insert( item, previous );
725
726 m_dirty = TRUE;
727
728 return item;
729 }
730
731 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
732 int image, int selImage,
733 wxTreeItemData *data)
734 {
735 wxCHECK_MSG( !m_anchor, wxTreeItemId(), _T("tree can have only one root") );
736
737 wxClientDC dc(this);
738 m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text, dc,
739 image, selImage, data);
740 if ( data != NULL )
741 {
742 data->m_pItem = m_anchor;
743 }
744
745 Refresh();
746 AdjustMyScrollbars();
747
748 return m_anchor;
749 }
750
751 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
752 const wxString& text,
753 int image, int selImage,
754 wxTreeItemData *data)
755 {
756 return DoInsertItem(parent, 0u, text, image, selImage, data);
757 }
758
759 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parentId,
760 const wxTreeItemId& idPrevious,
761 const wxString& text,
762 int image, int selImage,
763 wxTreeItemData *data)
764 {
765 wxGenericTreeItem *parent = parentId.m_pItem;
766 if ( !parent )
767 {
768 // should we give a warning here?
769 return AddRoot(text, image, selImage, data);
770 }
771
772 int index = parent->GetChildren().Index(idPrevious.m_pItem);
773 wxASSERT_MSG( index != wxNOT_FOUND,
774 _T("previous item in wxTreeCtrl::InsertItem() is not a sibling") );
775 return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
776 }
777
778 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parentId,
779 const wxString& text,
780 int image, int selImage,
781 wxTreeItemData *data)
782 {
783 wxGenericTreeItem *parent = parentId.m_pItem;
784 if ( !parent )
785 {
786 // should we give a warning here?
787 return AddRoot(text, image, selImage, data);
788 }
789
790 return DoInsertItem(parent, parent->GetChildren().Count(), text,
791 image, selImage, data);
792 }
793
794 void wxTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
795 {
796 wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
797 event.m_item = item;
798 event.SetEventObject( this );
799 ProcessEvent( event );
800 }
801
802 void wxTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
803 {
804 wxGenericTreeItem *item = itemId.m_pItem;
805 item->DeleteChildren(this);
806
807 m_dirty = TRUE;
808 }
809
810 void wxTreeCtrl::Delete(const wxTreeItemId& itemId)
811 {
812 wxGenericTreeItem *item = itemId.m_pItem;
813 wxGenericTreeItem *parent = item->GetParent();
814
815 if ( parent )
816 {
817 parent->GetChildren().Remove(item);
818 }
819
820 item->DeleteChildren(this);
821 SendDeleteEvent(item);
822 delete item;
823
824 m_dirty = TRUE;
825 }
826
827 void wxTreeCtrl::DeleteAllItems()
828 {
829 if ( m_anchor )
830 {
831 m_anchor->DeleteChildren(this);
832 delete m_anchor;
833
834 m_anchor = NULL;
835
836 m_dirty = TRUE;
837 }
838 }
839
840 void wxTreeCtrl::Expand(const wxTreeItemId& itemId)
841 {
842 wxGenericTreeItem *item = itemId.m_pItem;
843
844 if ( !item->HasPlus() )
845 return;
846
847 if ( item->IsExpanded() )
848 return;
849
850 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
851 event.m_item = item;
852 event.SetEventObject( this );
853 if ( ProcessEvent( event ) && event.m_code )
854 {
855 // cancelled by program
856 return;
857 }
858
859 item->Expand();
860 CalculatePositions();
861
862 RefreshSubtree(item);
863
864 event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
865 ProcessEvent( event );
866 }
867
868 void wxTreeCtrl::Collapse(const wxTreeItemId& itemId)
869 {
870 wxGenericTreeItem *item = itemId.m_pItem;
871
872 if ( !item->IsExpanded() )
873 return;
874
875 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
876 event.m_item = item;
877 event.SetEventObject( this );
878 if ( ProcessEvent( event ) && event.m_code )
879 {
880 // cancelled by program
881 return;
882 }
883
884 item->Collapse();
885
886 wxArrayGenericTreeItems& children = item->GetChildren();
887 size_t count = children.Count();
888 for ( size_t n = 0; n < count; n++ )
889 {
890 Collapse(children[n]);
891 }
892
893 CalculatePositions();
894
895 RefreshSubtree(item);
896
897 event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
898 ProcessEvent( event );
899 }
900
901 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
902 {
903 Collapse(item);
904 DeleteChildren(item);
905 }
906
907 void wxTreeCtrl::Toggle(const wxTreeItemId& itemId)
908 {
909 wxGenericTreeItem *item = itemId.m_pItem;
910
911 if ( item->IsExpanded() )
912 Collapse(itemId);
913 else
914 Expand(itemId);
915 }
916
917 void wxTreeCtrl::Unselect()
918 {
919 if ( m_current )
920 {
921 m_current->SetHilight( FALSE );
922 RefreshLine( m_current );
923 }
924 }
925
926 void wxTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
927 {
928 item->SetHilight(FALSE);
929 RefreshLine(item);
930
931 if (item->HasChildren())
932 {
933 wxArrayGenericTreeItems& children = item->GetChildren();
934 size_t count = children.Count();
935 for ( size_t n = 0; n < count; ++n )
936 UnselectAllChildren(children[n]);
937 }
938 }
939
940 void wxTreeCtrl::UnselectAll()
941 {
942 UnselectAllChildren(GetRootItem().m_pItem);
943 }
944
945 // Recursive function !
946 // To stop we must have crt_item<last_item
947 // Algorithm :
948 // Tag all next children, when no more children,
949 // Move to parent (not to tag)
950 // Keep going... if we found last_item, we stop.
951 bool wxTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
952 {
953 wxGenericTreeItem *parent = crt_item->GetParent();
954
955 if ( parent == NULL ) // This is root item
956 return TagAllChildrenUntilLast(crt_item, last_item, select);
957
958 wxArrayGenericTreeItems& children = parent->GetChildren();
959 int index = children.Index(crt_item);
960 wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
961
962 size_t count = children.Count();
963 for (size_t n=(size_t)(index+1); n<count; ++n)
964 if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
965
966 return TagNextChildren(parent, last_item, select);
967 }
968
969 bool wxTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
970 {
971 crt_item->SetHilight(select);
972 RefreshLine(crt_item);
973
974 if (crt_item==last_item) return TRUE;
975
976 if (crt_item->HasChildren())
977 {
978 wxArrayGenericTreeItems& children = crt_item->GetChildren();
979 size_t count = children.Count();
980 for ( size_t n = 0; n < count; ++n )
981 if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
982 }
983
984 return FALSE;
985 }
986
987 void wxTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
988 {
989 // item2 is not necessary after item1
990 wxGenericTreeItem *first=NULL, *last=NULL;
991
992 // choice first' and 'last' between item1 and item2
993 if (item1->GetY()<item2->GetY())
994 {
995 first=item1;
996 last=item2;
997 }
998 else
999 {
1000 first=item2;
1001 last=item1;
1002 }
1003
1004 bool select=m_current->HasHilight();
1005
1006 if (TagAllChildrenUntilLast(first,last,select)) return;
1007
1008 TagNextChildren(first,last,select);
1009 }
1010
1011 void wxTreeCtrl::SelectItem(const wxTreeItemId& itemId,
1012 bool unselect_others,
1013 bool extended_select)
1014 {
1015 bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
1016
1017 //wxCHECK_RET( ( (!unselect_others) && is_single),
1018 // _T("this is a single selection tree") );
1019
1020 // to keep going anyhow !!!
1021 if (is_single)
1022 {
1023 unselect_others=TRUE;
1024 extended_select=FALSE;
1025 }
1026
1027 wxGenericTreeItem *item = itemId.m_pItem;
1028
1029 wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
1030 event.m_item = item;
1031 event.m_itemOld = m_current;
1032 event.SetEventObject( this );
1033 // TODO : Here we don't send any selection mode yet !
1034
1035 if ( GetEventHandler()->ProcessEvent( event ) && event.WasVetoed() )
1036 return;
1037
1038 // ctrl press
1039 if (unselect_others)
1040 {
1041 if (is_single) Unselect(); // to speed up thing
1042 else UnselectAll();
1043 }
1044
1045 // shift press
1046 if (extended_select)
1047 {
1048 if (m_current == NULL) m_current=m_key_current=GetRootItem().m_pItem;
1049 // don't change the mark (m_current)
1050 SelectItemRange(m_current, item);
1051 }
1052 else
1053 {
1054 bool select=TRUE; // the default
1055
1056 // Check if we need to toggle hilight (ctrl mode)
1057 if (!unselect_others)
1058 select=!item->HasHilight();
1059
1060 m_current = m_key_current = item;
1061 m_current->SetHilight(select);
1062 RefreshLine( m_current );
1063 }
1064
1065 event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
1066 GetEventHandler()->ProcessEvent( event );
1067 }
1068
1069 void wxTreeCtrl::FillArray(wxGenericTreeItem *item, wxArrayTreeItemIds &array) const
1070 {
1071 if (item->HasHilight()) array.Add(wxTreeItemId(item));
1072
1073 if (item->HasChildren())
1074 {
1075 wxArrayGenericTreeItems& children = item->GetChildren();
1076 size_t count = children.Count();
1077 for ( size_t n = 0; n < count; ++n )
1078 FillArray(children[n],array);
1079 }
1080 }
1081
1082 size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
1083 {
1084 array.Empty();
1085 FillArray(GetRootItem().m_pItem, array);
1086
1087 return array.Count();
1088 }
1089
1090 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
1091 {
1092 if (!item.IsOk()) return;
1093
1094 wxGenericTreeItem *gitem = item.m_pItem;
1095
1096 // first expand all parent branches
1097 wxGenericTreeItem *parent = gitem->GetParent();
1098 while ( parent && !parent->IsExpanded() )
1099 {
1100 Expand(parent);
1101
1102 parent = parent->GetParent();
1103 }
1104
1105 if (parent) CalculatePositions();
1106
1107 ScrollTo(item);
1108 }
1109
1110 void wxTreeCtrl::ScrollTo(const wxTreeItemId &item)
1111 {
1112 if (!item.IsOk()) return;
1113
1114 wxGenericTreeItem *gitem = item.m_pItem;
1115
1116 // now scroll to the item
1117 int item_y = gitem->GetY();
1118
1119 int start_x = 0;
1120 int start_y = 0;
1121 ViewStart( &start_x, &start_y );
1122 start_y *= PIXELS_PER_UNIT;
1123
1124 int client_h = 0;
1125 int client_w = 0;
1126 GetClientSize( &client_w, &client_h );
1127
1128 if (item_y < start_y+3)
1129 {
1130 // going down
1131 int x = 0;
1132 int y = 0;
1133 m_anchor->GetSize( x, y, this );
1134 y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1135 int x_pos = GetScrollPos( wxHORIZONTAL );
1136 // Item should appear at top
1137 SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
1138 }
1139 else if (item_y+GetLineHeight(gitem) > start_y+client_h)
1140 {
1141 // going up
1142 int x = 0;
1143 int y = 0;
1144 m_anchor->GetSize( x, y, this );
1145 y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1146 item_y += PIXELS_PER_UNIT+2;
1147 int x_pos = GetScrollPos( wxHORIZONTAL );
1148 // Item should appear at bottom
1149 SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, (item_y+GetLineHeight(gitem)-client_h)/PIXELS_PER_UNIT );
1150 }
1151 }
1152
1153 wxTextCtrl *wxTreeCtrl::EditLabel( const wxTreeItemId& WXUNUSED(item),
1154 wxClassInfo* WXUNUSED(textCtrlClass) )
1155 {
1156 wxFAIL_MSG(_T("not implemented"));
1157
1158 return (wxTextCtrl*)NULL;
1159 }
1160
1161 wxTextCtrl *wxTreeCtrl::GetEditControl() const
1162 {
1163 wxFAIL_MSG(_T("not implemented"));
1164
1165 return (wxTextCtrl*)NULL;
1166 }
1167
1168 void wxTreeCtrl::EndEditLabel(const wxTreeItemId& WXUNUSED(item), bool WXUNUSED(discardChanges))
1169 {
1170 wxFAIL_MSG(_T("not implemented"));
1171 }
1172
1173 // FIXME: tree sorting functions are not reentrant and not MT-safe!
1174 static wxTreeCtrl *s_treeBeingSorted = NULL;
1175
1176 static int tree_ctrl_compare_func(wxGenericTreeItem **item1,
1177 wxGenericTreeItem **item2)
1178 {
1179 wxCHECK_MSG( s_treeBeingSorted, 0, _T("bug in wxTreeCtrl::SortChildren()") );
1180
1181 return s_treeBeingSorted->OnCompareItems(*item1, *item2);
1182 }
1183
1184 int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1185 const wxTreeItemId& item2)
1186 {
1187 return wxStrcmp(GetItemText(item1), GetItemText(item2));
1188 }
1189
1190 void wxTreeCtrl::SortChildren(const wxTreeItemId& itemId)
1191 {
1192 wxCHECK_RET( itemId.IsOk(), _T("invalid tree item") );
1193
1194 wxGenericTreeItem *item = itemId.m_pItem;
1195
1196 wxCHECK_RET( !s_treeBeingSorted,
1197 _T("wxTreeCtrl::SortChildren is not reentrant") );
1198
1199 wxArrayGenericTreeItems& children = item->GetChildren();
1200 if ( children.Count() > 1 )
1201 {
1202 s_treeBeingSorted = this;
1203 children.Sort(tree_ctrl_compare_func);
1204 s_treeBeingSorted = NULL;
1205
1206 m_dirty = TRUE;
1207 }
1208 //else: don't make the tree dirty as nothing changed
1209 }
1210
1211 wxImageList *wxTreeCtrl::GetImageList() const
1212 {
1213 return m_imageListNormal;
1214 }
1215
1216 wxImageList *wxTreeCtrl::GetStateImageList() const
1217 {
1218 return m_imageListState;
1219 }
1220
1221 void wxTreeCtrl::SetImageList(wxImageList *imageList)
1222 {
1223 m_imageListNormal = imageList;
1224
1225 // Calculate a m_lineHeight value from the image sizes.
1226 // May be toggle off. Then wxTreeCtrl will spread when
1227 // necessary (which might look ugly).
1228 #if 1
1229 wxPaintDC dc(this);
1230 m_lineHeight = (int)(dc.GetCharHeight() + 4);
1231 int
1232 width = 0,
1233 height = 0,
1234 n = m_imageListNormal->GetImageCount();
1235 for(int i = 0; i < n ; i++)
1236 {
1237 m_imageListNormal->GetSize(i, width, height);
1238 if(height > m_lineHeight) m_lineHeight = height;
1239 }
1240
1241 if (m_lineHeight<40) m_lineHeight+=4; // at least 4 pixels (odd such that a line can be drawn in between)
1242 else m_lineHeight+=m_lineHeight/10; // otherwise 10% extra spacing
1243
1244 #endif
1245 }
1246
1247 void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
1248 {
1249 m_imageListState = imageList;
1250 }
1251
1252 // -----------------------------------------------------------------------------
1253 // helpers
1254 // -----------------------------------------------------------------------------
1255
1256 void wxTreeCtrl::AdjustMyScrollbars()
1257 {
1258 if (m_anchor)
1259 {
1260 int x = 0;
1261 int y = 0;
1262 m_anchor->GetSize( x, y, this );
1263 //y += GetLineHeight(m_anchor);
1264 y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1265 int x_pos = GetScrollPos( wxHORIZONTAL );
1266 int y_pos = GetScrollPos( wxVERTICAL );
1267 SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
1268 }
1269 else
1270 {
1271 SetScrollbars( 0, 0, 0, 0 );
1272 }
1273 }
1274
1275 int wxTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
1276 {
1277 if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HIGHT)
1278 return item->GetHeight();
1279 else
1280 return m_lineHeight;
1281 }
1282
1283 void wxTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
1284 {
1285 // render bold items in bold
1286 wxFont fontOld;
1287 wxFont fontNew;
1288
1289 if (item->IsBold())
1290 {
1291 fontOld = dc.GetFont();
1292 if (fontOld.Ok())
1293 {
1294 // VZ: is there any better way to make a bold variant of old font?
1295 fontNew = wxFont( fontOld.GetPointSize(),
1296 fontOld.GetFamily(),
1297 fontOld.GetStyle(),
1298 wxBOLD,
1299 fontOld.GetUnderlined());
1300 dc.SetFont(fontNew);
1301 }
1302 else
1303 {
1304 wxFAIL_MSG(_T("wxDC::GetFont() failed!"));
1305 }
1306 }
1307
1308 long text_w = 0;
1309 long text_h = 0;
1310 dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1311
1312 int image_h = 0;
1313 int image_w = 0;
1314 if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1315 {
1316 m_imageListNormal->GetSize( item->GetSelectedImage(), image_w, image_h );
1317 image_w += 4;
1318 }
1319 else if (item->GetImage() != -1)
1320 {
1321 m_imageListNormal->GetSize( item->GetImage(), image_w, image_h );
1322 image_w += 4;
1323 }
1324
1325 int total_h = GetLineHeight(item);
1326
1327 dc.DrawRectangle( item->GetX()-2, item->GetY(), item->GetWidth()+2, total_h );
1328
1329 if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1330 {
1331 dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
1332 m_imageListNormal->Draw( item->GetSelectedImage(), dc,
1333 item->GetX(),
1334 item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
1335 wxIMAGELIST_DRAW_TRANSPARENT );
1336 dc.DestroyClippingRegion();
1337 }
1338 else if (item->GetImage() != -1)
1339 {
1340 dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
1341 m_imageListNormal->Draw( item->GetImage(), dc,
1342 item->GetX(),
1343 item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
1344 wxIMAGELIST_DRAW_TRANSPARENT );
1345 dc.DestroyClippingRegion();
1346 }
1347
1348 dc.SetBackgroundMode(wxTRANSPARENT);
1349 dc.DrawText( item->GetText(), image_w + item->GetX(), item->GetY()
1350 + ((total_h > text_h) ? (total_h - text_h)/2 : 0));
1351
1352 // restore normal font for bold items
1353 if (fontOld.Ok())
1354 {
1355 dc.SetFont( fontOld);
1356 }
1357 }
1358
1359 // Now y stands for the top of the item, whereas it used to stand for middle !
1360 void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
1361 {
1362 int horizX = level*m_indent;
1363
1364 item->SetX( horizX+m_indent+m_spacing );
1365 item->SetY( y );
1366
1367 int oldY = y;
1368 y+=GetLineHeight(item)/2;
1369
1370 item->SetCross( horizX+m_indent, y );
1371
1372 int exposed_x = dc.LogicalToDeviceX( 0 );
1373 int exposed_y = dc.LogicalToDeviceY( item->GetY()-2 );
1374
1375 if (IsExposed( exposed_x, exposed_y, 10000, GetLineHeight(item)+4 )) // 10000 = very much
1376 {
1377 int startX = horizX;
1378 int endX = horizX + (m_indent-5);
1379
1380 // if (!item->HasChildren()) endX += (m_indent+5);
1381 if (!item->HasChildren()) endX += 20;
1382
1383 dc.DrawLine( startX, y, endX, y );
1384
1385 if (item->HasPlus())
1386 {
1387 dc.DrawLine( horizX+(m_indent+5), y, horizX+(m_indent+15), y );
1388 dc.SetPen( *wxGREY_PEN );
1389 dc.SetBrush( *wxWHITE_BRUSH );
1390 dc.DrawRectangle( horizX+(m_indent-5), y-4, 11, 9 );
1391 dc.SetPen( *wxBLACK_PEN );
1392 dc.DrawLine( horizX+(m_indent-2), y, horizX+(m_indent+3), y );
1393
1394 if (!item->IsExpanded())
1395 {
1396 dc.DrawLine( horizX+m_indent, y-2, horizX+m_indent, y+3 );
1397 }
1398 }
1399
1400 if (item->HasHilight())
1401 {
1402 dc.SetTextForeground( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_HIGHLIGHTTEXT ) );
1403
1404 dc.SetBrush( *m_hilightBrush );
1405
1406 if (m_hasFocus)
1407 dc.SetPen( *wxBLACK_PEN );
1408 else
1409 dc.SetPen( *wxTRANSPARENT_PEN );
1410
1411 PaintItem(item, dc);
1412
1413 dc.SetPen( *wxBLACK_PEN );
1414 dc.SetTextForeground( *wxBLACK );
1415 dc.SetBrush( *wxWHITE_BRUSH );
1416 }
1417 else
1418 {
1419 dc.SetBrush( *wxWHITE_BRUSH );
1420 dc.SetPen( *wxTRANSPARENT_PEN );
1421
1422 PaintItem(item, dc);
1423
1424 dc.SetPen( *wxBLACK_PEN );
1425 }
1426 }
1427
1428 y = oldY+GetLineHeight(item);
1429
1430 if (item->IsExpanded())
1431 {
1432 oldY+=GetLineHeight(item)/2;
1433 int semiOldY=y; // (=y) for stupid compilator
1434
1435 wxArrayGenericTreeItems& children = item->GetChildren();
1436 size_t n, count = children.Count();
1437 for ( n = 0; n < count; ++n )
1438 {
1439 semiOldY=y;
1440 PaintLevel( children[n], dc, level+1, y );
1441 }
1442
1443 // it may happen that the item is expanded but has no items (when you
1444 // delete all its children for example) - don't draw the vertical line
1445 // in this case
1446 if (count > 0)
1447 {
1448 semiOldY+=GetLineHeight(children[--n])/2;
1449 dc.DrawLine( horizX+m_indent, oldY+5, horizX+m_indent, semiOldY );
1450 }
1451 }
1452 }
1453
1454 void wxTreeCtrl::DrawBorder(wxTreeItemId &item)
1455 {
1456 if (!item) return;
1457
1458 wxGenericTreeItem *i=item.m_pItem;
1459
1460 wxPaintDC dc(this);
1461 PrepareDC( dc );
1462 dc.SetLogicalFunction(wxINVERT);
1463
1464 int w,h,x;
1465 ViewStart(&x,&h); // we only need x
1466 GetClientSize(&w,&h); // we only need w
1467
1468 h=GetLineHeight(i)+1;
1469 // 2 white column at border
1470 dc.DrawRectangle( PIXELS_PER_UNIT*x+2, i->GetY()-1, w-6, h);
1471 }
1472
1473 void wxTreeCtrl::DrawLine(wxTreeItemId &item, bool below)
1474 {
1475 if (!item) return;
1476
1477 wxGenericTreeItem *i=item.m_pItem;
1478
1479 wxPaintDC dc(this);
1480 PrepareDC( dc );
1481 dc.SetLogicalFunction(wxINVERT);
1482
1483 int w,h,y;
1484 GetSize(&w,&h);
1485
1486 if (below) y=i->GetY()+GetLineHeight(i)-1;
1487 else y=i->GetY();
1488
1489 dc.DrawLine( 0, y, w, y);
1490 }
1491
1492 // -----------------------------------------------------------------------------
1493 // wxWindows callbacks
1494 // -----------------------------------------------------------------------------
1495
1496 void wxTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
1497 {
1498 if ( !m_anchor)
1499 return;
1500
1501 wxPaintDC dc(this);
1502 PrepareDC( dc );
1503
1504 dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT ) );
1505
1506 dc.SetPen( m_dottedPen );
1507 //if(GetImageList() == NULL)
1508 // m_lineHeight = (int)(dc.GetCharHeight() + 4);
1509
1510 int y = 2;
1511 PaintLevel( m_anchor, dc, 0, y );
1512 }
1513
1514 void wxTreeCtrl::OnSetFocus( wxFocusEvent &WXUNUSED(event) )
1515 {
1516 m_hasFocus = TRUE;
1517
1518 if (m_current) RefreshLine( m_current );
1519 }
1520
1521 void wxTreeCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
1522 {
1523 m_hasFocus = FALSE;
1524
1525 if (m_current) RefreshLine( m_current );
1526 }
1527
1528 void wxTreeCtrl::OnChar( wxKeyEvent &event )
1529 {
1530 wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
1531 te.m_code = event.KeyCode();
1532 te.SetEventObject( this );
1533 GetEventHandler()->ProcessEvent( te );
1534
1535 if ( (m_current == 0) || (m_key_current == 0) )
1536 {
1537 event.Skip();
1538 return;
1539 }
1540
1541 bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
1542 bool extended_select=(event.ShiftDown() && is_multiple);
1543 bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
1544
1545 switch (event.KeyCode())
1546 {
1547 case '+':
1548 case WXK_ADD:
1549 if (m_current->HasPlus() && !IsExpanded(m_current))
1550 {
1551 Expand(m_current);
1552 }
1553 break;
1554
1555 case '-':
1556 case WXK_SUBTRACT:
1557 if (IsExpanded(m_current))
1558 {
1559 Collapse(m_current);
1560 }
1561 break;
1562
1563 case '*':
1564 case WXK_MULTIPLY:
1565 Toggle(m_current);
1566 break;
1567
1568 case ' ':
1569 case WXK_RETURN:
1570 {
1571 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
1572 event.m_item = m_current;
1573 event.m_code = 0;
1574 event.SetEventObject( this );
1575 GetEventHandler()->ProcessEvent( event );
1576 }
1577 break;
1578
1579 // up goes to the previous sibling or to the last of its children if
1580 // it's expanded
1581 case WXK_UP:
1582 {
1583 wxTreeItemId prev = GetPrevSibling( m_key_current );
1584 if (!prev)
1585 {
1586 prev = GetParent( m_key_current );
1587 if (prev)
1588 {
1589 long cockie = 0;
1590 wxTreeItemId current = m_key_current;
1591 if (current == GetFirstChild( prev, cockie ))
1592 {
1593 // otherwise we return to where we came from
1594 SelectItem( prev, unselect_others, extended_select );
1595 m_key_current=prev.m_pItem;
1596 EnsureVisible( prev );
1597 break;
1598 }
1599 }
1600 }
1601 if (prev)
1602 {
1603 while ( IsExpanded(prev) && HasChildren(prev) )
1604 {
1605 wxTreeItemId child = GetLastChild(prev);
1606 if ( child )
1607 {
1608 prev = child;
1609 }
1610 }
1611
1612 SelectItem( prev, unselect_others, extended_select );
1613 m_key_current=prev.m_pItem;
1614 EnsureVisible( prev );
1615 }
1616 }
1617 break;
1618
1619 // left arrow goes to the parent
1620 case WXK_LEFT:
1621 {
1622 wxTreeItemId prev = GetParent( m_current );
1623 if (prev)
1624 {
1625 EnsureVisible( prev );
1626 SelectItem( prev, unselect_others, extended_select );
1627 }
1628 }
1629 break;
1630
1631 case WXK_RIGHT:
1632 // this works the same as the down arrow except that we also expand the
1633 // item if it wasn't expanded yet
1634 Expand(m_current);
1635 // fall through
1636
1637 case WXK_DOWN:
1638 {
1639 if (IsExpanded(m_key_current) && HasChildren(m_key_current))
1640 {
1641 long cookie = 0;
1642 wxTreeItemId child = GetFirstChild( m_key_current, cookie );
1643 SelectItem( child, unselect_others, extended_select );
1644 m_key_current=child.m_pItem;
1645 EnsureVisible( child );
1646 }
1647 else
1648 {
1649 wxTreeItemId next = GetNextSibling( m_key_current );
1650 if (next == 0)
1651 {
1652 wxTreeItemId current = m_key_current;
1653 while (current && !next)
1654 {
1655 current = GetParent( current );
1656 if (current) next = GetNextSibling( current );
1657 }
1658 }
1659 if (next != 0)
1660 {
1661 SelectItem( next, unselect_others, extended_select );
1662 m_key_current=next.m_pItem;
1663 EnsureVisible( next );
1664 }
1665 }
1666 }
1667 break;
1668
1669 // <End> selects the last visible tree item
1670 case WXK_END:
1671 {
1672 wxTreeItemId last = GetRootItem();
1673
1674 while ( last.IsOk() && IsExpanded(last) )
1675 {
1676 wxTreeItemId lastChild = GetLastChild(last);
1677
1678 // it may happen if the item was expanded but then all of
1679 // its children have been deleted - so IsExpanded() returned
1680 // TRUE, but GetLastChild() returned invalid item
1681 if ( !lastChild )
1682 break;
1683
1684 last = lastChild;
1685 }
1686
1687 if ( last.IsOk() )
1688 {
1689 EnsureVisible( last );
1690 SelectItem( last, unselect_others, extended_select );
1691 }
1692 }
1693 break;
1694
1695 // <Home> selects the root item
1696 case WXK_HOME:
1697 {
1698 wxTreeItemId prev = GetRootItem();
1699 if (prev)
1700 {
1701 EnsureVisible( prev );
1702 SelectItem( prev, unselect_others, extended_select );
1703 }
1704 }
1705 break;
1706
1707 default:
1708 event.Skip();
1709 }
1710 }
1711
1712 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
1713 {
1714 wxClientDC dc(this);
1715 PrepareDC(dc);
1716 long x = dc.DeviceToLogicalX( (long)point.x );
1717 long y = dc.DeviceToLogicalY( (long)point.y );
1718 int w, h;
1719 GetSize(&w, &h);
1720
1721 flags=0;
1722 if (point.x<0) flags|=wxTREE_HITTEST_TOLEFT;
1723 if (point.x>w) flags|=wxTREE_HITTEST_TORIGHT;
1724 if (point.y<0) flags|=wxTREE_HITTEST_ABOVE;
1725 if (point.y>h) flags|=wxTREE_HITTEST_BELOW;
1726
1727 return m_anchor->HitTest( wxPoint(x, y), this, flags);
1728 }
1729
1730 void wxTreeCtrl::OnMouse( wxMouseEvent &event )
1731 {
1732 if (!event.LeftIsDown()) m_dragCount = 0;
1733
1734 if ( !(event.LeftUp() || event.LeftDClick() || event.Dragging()) ) return;
1735
1736 if ( !m_anchor ) return;
1737
1738 wxClientDC dc(this);
1739 PrepareDC(dc);
1740 long x = dc.DeviceToLogicalX( (long)event.GetX() );
1741 long y = dc.DeviceToLogicalY( (long)event.GetY() );
1742
1743 int flags=0;
1744 wxGenericTreeItem *item = m_anchor->HitTest( wxPoint(x,y), this, flags);
1745 bool onButton = flags & wxTREE_HITTEST_ONITEMBUTTON;
1746
1747 if (item == NULL) return; /* we hit the blank area */
1748
1749 if (event.Dragging())
1750 {
1751 if (m_dragCount == 2) /* small drag latency (3?) */
1752 {
1753 m_dragCount = 0;
1754
1755 wxTreeEvent nevent(wxEVT_COMMAND_TREE_BEGIN_DRAG, GetId());
1756 nevent.m_item = m_current;
1757 nevent.SetEventObject(this);
1758 GetEventHandler()->ProcessEvent(nevent);
1759 }
1760 else
1761 {
1762 m_dragCount++;
1763 }
1764 return;
1765 }
1766
1767 bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
1768 bool extended_select=(event.ShiftDown() && is_multiple);
1769 bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
1770
1771 if (onButton)
1772 {
1773 Toggle( item );
1774 if (is_multiple) return;
1775 }
1776
1777 SelectItem(item, unselect_others, extended_select);
1778
1779 if (event.LeftDClick())
1780 {
1781 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
1782 event.m_item = item;
1783 event.m_code = 0;
1784 event.SetEventObject( this );
1785 GetEventHandler()->ProcessEvent( event );
1786 }
1787 }
1788
1789 void wxTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
1790 {
1791 /* after all changes have been done to the tree control,
1792 * we actually redraw the tree when everything is over */
1793
1794 if (!m_dirty)
1795 return;
1796
1797 m_dirty = FALSE;
1798
1799 CalculatePositions();
1800 Refresh();
1801 AdjustMyScrollbars();
1802 }
1803
1804 void wxTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
1805 {
1806 long text_w = 0;
1807 long text_h = 0;
1808 // TODO : check for boldness. Here with suppose that font normal and bold
1809 // have the same height !
1810 // TODO : bug here, text_w is sometime not the correct answer !!!
1811 dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1812 text_h+=4;
1813
1814 int image_h = 0;
1815 int image_w = 0;
1816 if ((item->IsExpanded()) && (item->GetSelectedImage() != -1))
1817 {
1818 m_imageListNormal->GetSize( item->GetSelectedImage(), image_w, image_h );
1819 image_w += 4;
1820 }
1821 else if (item->GetImage() != -1)
1822 {
1823 m_imageListNormal->GetSize( item->GetImage(), image_w, image_h );
1824 image_w += 4;
1825 }
1826
1827 int total_h = (image_h > text_h) ? image_h : text_h;
1828
1829 if (total_h<40) total_h+=4; // at least 4 pixels
1830 else total_h+=total_h/10; // otherwise 10% extra spacing
1831
1832 item->SetHeight(total_h);
1833 if (total_h>m_lineHeight) m_lineHeight=total_h;
1834
1835 item->SetWidth(image_w+text_w+2);
1836 }
1837
1838 // -----------------------------------------------------------------------------
1839 // for developper : y is now the top of the level
1840 // not the middle of it !
1841 void wxTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
1842 {
1843 int horizX = level*m_indent;
1844
1845 CalculateSize( item, dc );
1846
1847 // set its position
1848 item->SetX( horizX+m_indent+m_spacing );
1849 item->SetY( y );
1850 y+=GetLineHeight(item);
1851
1852 if ( !item->IsExpanded() )
1853 {
1854 // we dont need to calculate collapsed branches
1855 return;
1856 }
1857
1858 wxArrayGenericTreeItems& children = item->GetChildren();
1859 size_t n, count = children.Count();
1860 for (n = 0; n < count; ++n )
1861 CalculateLevel( children[n], dc, level+1, y ); // recurse
1862 }
1863
1864 void wxTreeCtrl::CalculatePositions()
1865 {
1866 if ( !m_anchor ) return;
1867
1868 wxClientDC dc(this);
1869 PrepareDC( dc );
1870
1871 dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT ) );
1872
1873 dc.SetPen( m_dottedPen );
1874 //if(GetImageList() == NULL)
1875 // m_lineHeight = (int)(dc.GetCharHeight() + 4);
1876
1877 int y = 2; //GetLineHeight(m_anchor) / 2 + 2;
1878 CalculateLevel( m_anchor, dc, 0, y ); // start recursion
1879 }
1880
1881 void wxTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
1882 {
1883 wxClientDC dc(this);
1884 PrepareDC(dc);
1885
1886 int cw = 0;
1887 int ch = 0;
1888 GetClientSize( &cw, &ch );
1889
1890 wxRect rect;
1891 rect.x = dc.LogicalToDeviceX( 0 );
1892 rect.width = cw;
1893 rect.y = dc.LogicalToDeviceY( item->GetY() );
1894 rect.height = ch;
1895
1896 Refresh( TRUE, &rect );
1897
1898 AdjustMyScrollbars();
1899 }
1900
1901 void wxTreeCtrl::RefreshLine( wxGenericTreeItem *item )
1902 {
1903 wxClientDC dc(this);
1904 PrepareDC( dc );
1905
1906 wxRect rect;
1907 rect.x = dc.LogicalToDeviceX( item->GetX() - 2 );
1908 rect.y = dc.LogicalToDeviceY( item->GetY());
1909 rect.width = 1000;
1910 rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
1911
1912 Refresh( TRUE, &rect );
1913 }
1914
wxWidgets (Impactor)