src/common/headerctrlcmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/headerctrlcmn.cpp
   3 // Purpose:     implementation of wxHeaderCtrlBase
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-12-02
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/headerctrl.h"
  30
  31 // ----------------------------------------------------------------------------
  32 // constants
  33 // ----------------------------------------------------------------------------
  34
  35 namespace
  36 {
  37
  38 const unsigned int wxNO_COLUMN = static_cast<unsigned>(-1);
  39
  40 } // anonymous namespace
  41
  42 // ============================================================================
  43 // wxHeaderCtrlBase implementation
  44 // ============================================================================
  45
  46 extern WXDLLIMPEXP_DATA_CORE(const char) wxHeaderCtrlNameStr[] = "wxHeaderCtrl";
  47
  48 BEGIN_EVENT_TABLE(wxHeaderCtrlBase, wxControl)
  49     EVT_HEADER_SEPARATOR_DCLICK(wxID_ANY, wxHeaderCtrlBase::OnSeparatorDClick)
  50 END_EVENT_TABLE()
  51
  52 void wxHeaderCtrlBase::ScrollWindow(int dx,
  53                                     int WXUNUSED_UNLESS_DEBUG(dy),
  54                                     const wxRect * WXUNUSED_UNLESS_DEBUG(rect))
  55
  56 {
  57     // this doesn't make sense at all
  58     wxASSERT_MSG( !dy, "header window can't be scrolled vertically" );
  59
  60     // this would actually be nice to support for "frozen" headers but it isn't
  61     // supported currently
  62     wxASSERT_MSG( !rect, "header window can't be scrolled partially" );
  63
  64     DoScrollHorz(dx);
  65 }
  66
  67 void wxHeaderCtrlBase::SetColumnCount(unsigned int count)
  68 {
  69     OnColumnCountChanging(count);
  70
  71     DoSetCount(count);
  72 }
  73
  74 // ----------------------------------------------------------------------------
  75 // wxHeaderCtrlBase event handling
  76 // ----------------------------------------------------------------------------
  77
  78 void wxHeaderCtrlBase::OnSeparatorDClick(wxHeaderCtrlEvent& event)
  79 {
  80     const unsigned col = event.GetColumn();
  81
  82     int w = wxWindowBase::GetTextExtent(GetColumn(col).GetTitle()).x;
  83     w += 4*GetCharWidth(); // add some arbitrary margins around text
  84
  85     if ( !UpdateColumnWidthToFit(col, w) )
  86         event.Skip();
  87     else
  88         UpdateColumn(col);
  89 }
  90
  91 // ----------------------------------------------------------------------------
  92 // wxHeaderCtrlBase column reordering
  93 // ----------------------------------------------------------------------------
  94
  95 void wxHeaderCtrlBase::SetColumnsOrder(const wxArrayInt& order)
  96 {
  97     const unsigned count = GetColumnCount();
  98     wxCHECK_RET( order.size() == count, "wrong number of columns" );
  99
 100     // check the array validity
 101     wxArrayInt seen(count, 0);
 102     for ( unsigned n = 0; n < count; n++ )
 103     {
 104         const unsigned idx = order[n];
 105         wxCHECK_RET( idx < count, "invalid column index" );
 106         wxCHECK_RET( !seen[idx], "duplicate column index" );
 107
 108         seen[idx] = 1;
 109     }
 110
 111     DoSetColumnsOrder(order);
 112
 113     // TODO-RTL: do we need to reverse the array?
 114 }
 115
 116 wxArrayInt wxHeaderCtrlBase::GetColumnsOrder() const
 117 {
 118     const wxArrayInt order = DoGetColumnsOrder();
 119
 120     wxASSERT_MSG( order.size() == GetColumnCount(), "invalid order array" );
 121
 122     return order;
 123 }
 124
 125 unsigned int wxHeaderCtrlBase::GetColumnAt(unsigned int pos) const
 126 {
 127     wxCHECK_MSG( pos < GetColumnCount(), wxNO_COLUMN, "invalid position" );
 128
 129     return GetColumnsOrder()[pos];
 130 }
 131
 132 unsigned int wxHeaderCtrlBase::GetColumnPos(unsigned int idx) const
 133 {
 134     const unsigned count = GetColumnCount();
 135
 136     wxCHECK_MSG( idx < count, wxNO_COLUMN, "invalid index" );
 137
 138     const wxArrayInt order = GetColumnsOrder();
 139     for ( unsigned n = 0; n < count; n++ )
 140     {
 141         if ( (unsigned)order[n] == idx )
 142             return n;
 143     }
 144
 145     wxFAIL_MSG( "column unexpectedly not displayed at all" );
 146
 147     return wxNO_COLUMN;
 148 }
 149
 150 /* static */
 151 void wxHeaderCtrlBase::MoveColumnInOrderArray(wxArrayInt& order,
 152                                               unsigned int idx,
 153                                               unsigned int pos)
 154 {
 155     const unsigned count = order.size();
 156
 157     wxArrayInt orderNew;
 158     orderNew.reserve(count);
 159     for ( unsigned n = 0; ; n++ )
 160     {
 161         // NB: order of checks is important for this to work when the new
 162         //     column position is the same as the old one
 163
 164         // insert the column at its new position
 165         if ( orderNew.size() == pos )
 166             orderNew.push_back(idx);
 167
 168         if ( n == count )
 169             break;
 170
 171         // delete the column from its old position
 172         const unsigned idxOld = order[n];
 173         if ( idxOld == idx )
 174             continue;
 175
 176         orderNew.push_back(idxOld);
 177     }
 178
 179     order.swap(orderNew);
 180 }
 181
 182 // ============================================================================
 183 // wxHeaderCtrlSimple implementation
 184 // ============================================================================
 185
 186 void wxHeaderCtrlSimple::Init()
 187 {
 188     m_sortKey = wxNO_COLUMN;
 189 }
 190
 191 wxHeaderColumn& wxHeaderCtrlSimple::GetColumn(unsigned int idx)
 192 {
 193     return m_cols[idx];
 194 }
 195
 196 void wxHeaderCtrlSimple::DoInsert(const wxHeaderColumnSimple& col, unsigned int idx)
 197 {
 198     m_cols.insert(m_cols.begin() + idx, col);
 199
 200     UpdateColumnCount();
 201 }
 202
 203 void wxHeaderCtrlSimple::DoDelete(unsigned int idx)
 204 {
 205     m_cols.erase(m_cols.begin() + idx);
 206     if ( idx == m_sortKey )
 207         m_sortKey = wxNO_COLUMN;
 208
 209     UpdateColumnCount();
 210 }
 211
 212 void wxHeaderCtrlSimple::DeleteAllColumns()
 213 {
 214     m_cols.clear();
 215     m_sortKey = wxNO_COLUMN;
 216
 217     UpdateColumnCount();
 218 }
 219
 220
 221 void wxHeaderCtrlSimple::DoShowColumn(unsigned int idx, bool show)
 222 {
 223     if ( show != m_cols[idx].IsShown() )
 224     {
 225         m_cols[idx].SetHidden(!show);
 226
 227         UpdateColumn(idx);
 228     }
 229 }
 230
 231 void wxHeaderCtrlSimple::DoShowSortIndicator(unsigned int idx, bool ascending)
 232 {
 233     RemoveSortIndicator();
 234
 235     m_cols[idx].SetAsSortKey(ascending);
 236     m_sortKey = idx;
 237
 238     UpdateColumn(idx);
 239 }
 240
 241 void wxHeaderCtrlSimple::RemoveSortIndicator()
 242 {
 243     if ( m_sortKey != wxNO_COLUMN )
 244     {
 245         const unsigned sortOld = m_sortKey;
 246         m_sortKey = wxNO_COLUMN;
 247
 248         m_cols[sortOld].UnsetAsSortKey();
 249
 250         UpdateColumn(sortOld);
 251     }
 252 }
 253
 254 bool
 255 wxHeaderCtrlSimple::UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 256 {
 257     const int widthContents = GetBestFittingWidth(idx);
 258     if ( widthContents == -1 )
 259         return false;
 260
 261     m_cols[idx].SetWidth(wxMax(widthContents, widthTitle));
 262
 263     return true;
 264 }
 265
 266 // ============================================================================
 267 // wxHeaderCtrlEvent implementation
 268 // ============================================================================
 269
 270 IMPLEMENT_DYNAMIC_CLASS(wxHeaderCtrlEvent, wxNotifyEvent)
 271
 272 const wxEventType wxEVT_COMMAND_HEADER_CLICK = wxNewEventType();
 273 const wxEventType wxEVT_COMMAND_HEADER_RIGHT_CLICK = wxNewEventType();
 274 const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_CLICK = wxNewEventType();
 275
 276 const wxEventType wxEVT_COMMAND_HEADER_DCLICK = wxNewEventType();
 277 const wxEventType wxEVT_COMMAND_HEADER_RIGHT_DCLICK = wxNewEventType();
 278 const wxEventType wxEVT_COMMAND_HEADER_MIDDLE_DCLICK = wxNewEventType();
 279
 280 const wxEventType wxEVT_COMMAND_HEADER_SEPARATOR_DCLICK = wxNewEventType();
 281
 282 const wxEventType wxEVT_COMMAND_HEADER_BEGIN_RESIZE = wxNewEventType();
 283 const wxEventType wxEVT_COMMAND_HEADER_RESIZING = wxNewEventType();
 284 const wxEventType wxEVT_COMMAND_HEADER_END_RESIZE = wxNewEventType();
 285
 286 const wxEventType wxEVT_COMMAND_HEADER_BEGIN_REORDER = wxNewEventType();
 287 const wxEventType wxEVT_COMMAND_HEADER_END_REORDER = wxNewEventType();
 288
 289 const wxEventType wxEVT_COMMAND_HEADER_DRAGGING_CANCELLED = wxNewEventType();