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_ABSTRACT_CLASS(wxTreeEvent, wxNotifyEvent)
  63
  64
  65 wxTreeEvent::wxTreeEvent(wxEventType commandType,
  66                          wxTreeCtrlBase *tree,
  67                          const wxTreeItemId& item)
  68            : wxNotifyEvent(commandType, tree->GetId()),
  69              m_item(item)
  70 {
  71     m_editCancelled = false;
  72
  73     SetEventObject(tree);
  74
  75     if ( item.IsOk() )
  76         SetClientObject(tree->GetItemData(item));
  77 }
  78
  79 wxTreeEvent::wxTreeEvent(const wxTreeEvent & event)
  80            : wxNotifyEvent(event)
  81 {
  82     m_evtKey = event.m_evtKey;
  83     m_item = event.m_item;
  84     m_itemOld = event.m_itemOld;
  85     m_pointDrag = event.m_pointDrag;
  86     m_label = event.m_label;
  87     m_editCancelled = event.m_editCancelled;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // wxTreeCtrlBase
  92 // ----------------------------------------------------------------------------
  93
  94 wxTreeCtrlBase::~wxTreeCtrlBase()
  95 {
  96     if (m_ownsImageListNormal)
  97         delete m_imageListNormal;
  98     if (m_ownsImageListState)
  99         delete m_imageListState;
 100 }
 101
 102 static void wxGetBestTreeSize(const wxTreeCtrlBase* treeCtrl, const wxTreeItemId& id, wxSize& size)
 103 {
 104     wxRect rect;
 105
 106     if ( treeCtrl->GetBoundingRect(id, rect, true) )
 107     {
 108         if ( size.x < rect.x + rect.width )
 109             size.x = rect.x + rect.width;
 110         if ( size.y < rect.y + rect.height )
 111             size.y = rect.y + rect.height;
 112     }
 113
 114     wxTreeItemIdValue cookie;
 115     for ( wxTreeItemId item = treeCtrl->GetFirstChild(id, cookie);
 116           item.IsOk();
 117           item = treeCtrl->GetNextChild(item, cookie) )
 118     {
 119         wxGetBestTreeSize(treeCtrl, item, size);
 120     }
 121 }
 122
 123 wxSize wxTreeCtrlBase::DoGetBestSize() const
 124 {
 125     wxSize size;
 126
 127     // this doesn't really compute the total bounding rectangle of all items
 128     // but a not too bad guess of it which has the advantage of not having to
 129     // examine all (potentially hundreds or thousands) items in the control
 130
 131     if (GetQuickBestSize())
 132     {
 133         for ( wxTreeItemId item = GetRootItem();
 134               item.IsOk();
 135               item = GetLastChild(item) )
 136         {
 137             wxRect rect;
 138
 139             // last parameter is "true" to get only the dimensions of the text
 140             // label, we don't want to get the entire item width as it's determined
 141             // by the current size
 142             if ( GetBoundingRect(item, rect, true) )
 143             {
 144                 if ( size.x < rect.x + rect.width )
 145                     size.x = rect.x + rect.width;
 146                 if ( size.y < rect.y + rect.height )
 147                     size.y = rect.y + rect.height;
 148             }
 149         }
 150     }
 151     else
 152         wxGetBestTreeSize(this, GetRootItem(), size);
 153
 154     // need some minimal size even for empty tree
 155     if ( !size.x || !size.y )
 156         size = wxControl::DoGetBestSize();
 157     else
 158         CacheBestSize(size);
 159
 160     return size;
 161 }
 162
 163 #endif // wxUSE_TREECTRL
 164