src/common/treebase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treebase.cpp
   3 // Purpose:     Base wxTreeCtrl classes
   4 // Author:      Julian Smart
   5 // Created:     01/02/97
   6 // Modified:
   7 // Id:          $Id$
   8 // Copyright:   (c) 1998 Robert Roebling, Julian Smart et al
   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 #if wxUSE_TREECTRL
  28
  29 #include "wx/treectrl.h"
  30 #include "wx/imaglist.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // events
  34 // ----------------------------------------------------------------------------
  35
  36 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_DRAG)
  37 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_RDRAG)
  38 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT)
  39 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_END_LABEL_EDIT)
  40 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_DELETE_ITEM)
  41 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_GET_INFO)
  42 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_SET_INFO)
  43 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_EXPANDED)
  44 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_EXPANDING)
  45 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_COLLAPSED)
  46 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_COLLAPSING)
  47 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_SEL_CHANGED)
  48 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_SEL_CHANGING)
  49 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_KEY_DOWN)
  50 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_ACTIVATED)
  51 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK)
  52 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_MIDDLE_CLICK)
  53 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_END_DRAG)
  54 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK)
  55 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP)
  56 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_MENU)
  57
  58 // ----------------------------------------------------------------------------
  59 // Tree event
  60 // ----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
  63
  64
  65 wxTreeEvent::wxTreeEvent(wxEventType commandType, int id)
  66            : wxNotifyEvent(commandType, id)
  67 {
  68     m_itemOld = 0l;
  69     m_editCancelled = false;
  70 }
  71
  72 wxTreeEvent::wxTreeEvent(const wxTreeEvent & event)
  73            : wxNotifyEvent(event)
  74 {
  75     m_evtKey = event.m_evtKey;
  76     m_item = event.m_item;
  77     m_itemOld = event.m_itemOld;
  78     m_pointDrag = event.m_pointDrag;
  79     m_label = event.m_label;
  80     m_editCancelled = event.m_editCancelled;
  81 }
  82
  83 // ----------------------------------------------------------------------------
  84 // wxTreeCtrlBase
  85 // ----------------------------------------------------------------------------
  86
  87 wxTreeCtrlBase::~wxTreeCtrlBase()
  88 {
  89     if (m_ownsImageListNormal)
  90         delete m_imageListNormal;
  91     if (m_ownsImageListState)
  92         delete m_imageListState;
  93 }
  94
  95 static void wxGetBestTreeSize(const wxTreeCtrlBase* treeCtrl, const wxTreeItemId& id, wxSize& size)
  96 {
  97     wxRect rect;
  98
  99     if ( treeCtrl->GetBoundingRect(id, rect, true) )
 100     {
 101         if ( size.x < rect.x + rect.width )
 102             size.x = rect.x + rect.width;
 103         if ( size.y < rect.y + rect.height )
 104             size.y = rect.y + rect.height;
 105     }
 106
 107     wxTreeItemIdValue cookie;
 108     for ( wxTreeItemId item = treeCtrl->GetFirstChild(id, cookie);
 109           item.IsOk();
 110           item = treeCtrl->GetNextChild(item, cookie) )
 111     {
 112         wxGetBestTreeSize(treeCtrl, item, size);
 113     }
 114 }
 115
 116 wxSize wxTreeCtrlBase::DoGetBestSize() const
 117 {
 118     wxSize size;
 119
 120     // this doesn't really compute the total bounding rectangle of all items
 121     // but a not too bad guess of it which has the advantage of not having to
 122     // examine all (potentially hundreds or thousands) items in the control
 123
 124     if (GetQuickBestSize())
 125     {
 126         for ( wxTreeItemId item = GetRootItem();
 127               item.IsOk();
 128               item = GetLastChild(item) )
 129         {
 130             wxRect rect;
 131
 132             // last parameter is "true" to get only the dimensions of the text
 133             // label, we don't want to get the entire item width as it's determined
 134             // by the current size
 135             if ( GetBoundingRect(item, rect, true) )
 136             {
 137                 if ( size.x < rect.x + rect.width )
 138                     size.x = rect.x + rect.width;
 139                 if ( size.y < rect.y + rect.height )
 140                     size.y = rect.y + rect.height;
 141             }
 142         }
 143     }
 144     else
 145         wxGetBestTreeSize(this, GetRootItem(), size);
 146
 147     // need some minimal size even for empty tree
 148     if ( !size.x || !size.y )
 149         size = wxControl::DoGetBestSize();
 150     else
 151         CacheBestSize(size);
 152
 153     return size;
 154 }
 155
 156 #endif // wxUSE_TREECTRL
 157