src/generic/gridctrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/gridctrl.cpp
   3 // Purpose:     wxGrid controls
   4 // Author:      Paul Gammans, Roger Gammans
   5 // Modified by:
   6 // Created:     11/04/2001
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) The Computer Surgery (paul@compsurg.co.uk)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13     #pragma implementation "gridctrl.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19     #pragma hdrstop
  20 #endif
  21
  22 #if wxUSE_GRID
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/textctrl.h"
  26     #include "wx/dc.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/generic/gridctrl.h"
  30 #include "wx/tokenzr.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // wxGridCellDateTimeRenderer
  34 // ----------------------------------------------------------------------------
  35
  36 #if wxUSE_DATETIME
  37
  38 // Enables a grid cell to display a formated date and or time
  39
  40 wxGridCellDateTimeRenderer::wxGridCellDateTimeRenderer(wxString outformat, wxString informat)
  41 {
  42     m_iformat = informat;
  43     m_oformat = outformat;
  44     m_tz = wxDateTime::Local;
  45     m_dateDef = wxDefaultDateTime;
  46 }
  47
  48 wxGridCellRenderer *wxGridCellDateTimeRenderer::Clone() const
  49 {
  50     wxGridCellDateTimeRenderer *renderer = new wxGridCellDateTimeRenderer;
  51     renderer->m_iformat = m_iformat;
  52     renderer->m_oformat = m_oformat;
  53     renderer->m_dateDef = m_dateDef;
  54     renderer->m_tz = m_tz;
  55
  56     return renderer;
  57 }
  58
  59 wxString wxGridCellDateTimeRenderer::GetString(wxGrid& grid, int row, int col)
  60 {
  61     wxGridTableBase *table = grid.GetTable();
  62
  63     bool hasDatetime = false;
  64     wxDateTime val;
  65     wxString text;
  66     if ( table->CanGetValueAs(row, col, wxGRID_VALUE_DATETIME) )
  67     {
  68         void * tempval = table->GetValueAsCustom(row, col,wxGRID_VALUE_DATETIME);
  69
  70         if (tempval){
  71             val = *((wxDateTime *)tempval);
  72             hasDatetime = true;
  73             delete (wxDateTime *)tempval;
  74         }
  75
  76     }
  77
  78     if (!hasDatetime )
  79     {
  80         text = table->GetValue(row, col);
  81         hasDatetime = (val.ParseFormat( text, m_iformat, m_dateDef ) != (wxChar *)NULL) ;
  82     }
  83
  84     if ( hasDatetime )
  85         text = val.Format(m_oformat, m_tz );
  86
  87     //If we faild to parse string just show what we where given?
  88     return text;
  89 }
  90
  91 void wxGridCellDateTimeRenderer::Draw(wxGrid& grid,
  92                                    wxGridCellAttr& attr,
  93                                    wxDC& dc,
  94                                    const wxRect& rectCell,
  95                                    int row, int col,
  96                                    bool isSelected)
  97 {
  98     wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
  99
 100     SetTextColoursAndFont(grid, attr, dc, isSelected);
 101
 102     // draw the text right aligned by default
 103     int hAlign, vAlign;
 104     attr.GetAlignment(&hAlign, &vAlign);
 105     hAlign = wxRIGHT;
 106
 107     wxRect rect = rectCell;
 108     rect.Inflate(-1);
 109
 110     grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
 111 }
 112
 113 wxSize wxGridCellDateTimeRenderer::GetBestSize(wxGrid& grid,
 114                                             wxGridCellAttr& attr,
 115                                             wxDC& dc,
 116                                             int row, int col)
 117 {
 118     return DoGetBestSize(attr, dc, GetString(grid, row, col));
 119 }
 120
 121 void wxGridCellDateTimeRenderer::SetParameters(const wxString& params){
 122     if (!params.IsEmpty())
 123         m_oformat=params;
 124 }
 125
 126 #endif // wxUSE_DATETIME
 127
 128 // ----------------------------------------------------------------------------
 129 // wxGridCellChoiceNumberRenderer
 130 // ----------------------------------------------------------------------------
 131 // Renders a number as a textual equivalent.
 132 // eg data in cell is 0,1,2 ... n the cell could be rendered as "John","Fred"..."Bob"
 133
 134
 135 wxGridCellEnumRenderer::wxGridCellEnumRenderer(const wxString& choices)
 136 {
 137     if (!choices.IsEmpty())
 138         SetParameters(choices);
 139 }
 140
 141 wxGridCellRenderer *wxGridCellEnumRenderer::Clone() const
 142 {
 143     wxGridCellEnumRenderer *renderer = new wxGridCellEnumRenderer;
 144     renderer->m_choices = m_choices;
 145     return renderer;
 146 }
 147
 148 wxString wxGridCellEnumRenderer::GetString(wxGrid& grid, int row, int col)
 149 {
 150     wxGridTableBase *table = grid.GetTable();
 151     wxString text;
 152     if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
 153     {
 154         int choiceno = table->GetValueAsLong(row, col);
 155         text.Printf(_T("%s"), m_choices[ choiceno ].c_str() );
 156     }
 157     else
 158     {
 159         text = table->GetValue(row, col);
 160     }
 161
 162
 163     //If we faild to parse string just show what we where given?
 164     return text;
 165 }
 166
 167 void wxGridCellEnumRenderer::Draw(wxGrid& grid,
 168                                    wxGridCellAttr& attr,
 169                                    wxDC& dc,
 170                                    const wxRect& rectCell,
 171                                    int row, int col,
 172                                    bool isSelected)
 173 {
 174     wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
 175
 176     SetTextColoursAndFont(grid, attr, dc, isSelected);
 177
 178     // draw the text right aligned by default
 179     int hAlign, vAlign;
 180     attr.GetAlignment(&hAlign, &vAlign);
 181     hAlign = wxRIGHT;
 182
 183     wxRect rect = rectCell;
 184     rect.Inflate(-1);
 185
 186     grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
 187 }
 188
 189 wxSize wxGridCellEnumRenderer::GetBestSize(wxGrid& grid,
 190                                             wxGridCellAttr& attr,
 191                                             wxDC& dc,
 192                                             int row, int col)
 193 {
 194     return DoGetBestSize(attr, dc, GetString(grid, row, col));
 195 }
 196
 197 void wxGridCellEnumRenderer::SetParameters(const wxString& params)
 198 {
 199     if ( !params )
 200     {
 201         // what can we do?
 202         return;
 203     }
 204
 205     m_choices.Empty();
 206
 207     wxStringTokenizer tk(params, _T(','));
 208     while ( tk.HasMoreTokens() )
 209     {
 210         m_choices.Add(tk.GetNextToken());
 211     }
 212 }
 213
 214 #if wxUSE_COMBOBOX
 215
 216 // ----------------------------------------------------------------------------
 217 // wxGridCellEnumEditor
 218 // ----------------------------------------------------------------------------
 219
 220 // A cell editor which displays an enum number as a textual equivalent. eg
 221 // data in cell is 0,1,2 ... n the cell could be displayed as
 222 // "John","Fred"..."Bob" in the combo choice box
 223
 224 wxGridCellEnumEditor::wxGridCellEnumEditor(const wxString& choices)
 225                     : wxGridCellChoiceEditor()
 226 {
 227     m_startint = -1;
 228
 229     if (!choices.IsEmpty())
 230         SetParameters(choices);
 231 }
 232
 233 wxGridCellEditor *wxGridCellEnumEditor::Clone() const
 234 {
 235     wxGridCellEnumEditor *editor = new wxGridCellEnumEditor();
 236     editor->m_startint = m_startint;
 237     return editor;
 238 }
 239
 240 void wxGridCellEnumEditor::BeginEdit(int row, int col, wxGrid* grid)
 241 {
 242     wxASSERT_MSG(m_control,
 243                  wxT("The wxGridCellEnumEditor must be Created first!"));
 244
 245     wxGridTableBase *table = grid->GetTable();
 246
 247     if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
 248     {
 249         m_startint = table->GetValueAsLong(row, col);
 250     }
 251     else
 252     {
 253         wxString startValue = table->GetValue(row, col);
 254         if (startValue.IsNumber() && !startValue.IsEmpty())
 255         {
 256             startValue.ToLong(&m_startint);
 257         }
 258         else
 259         {
 260             m_startint=-1;
 261         }
 262     }
 263
 264     Combo()->SetSelection(m_startint);
 265     Combo()->SetInsertionPointEnd();
 266     Combo()->SetFocus();
 267
 268 }
 269
 270 bool wxGridCellEnumEditor::EndEdit(int row, int col, wxGrid* grid)
 271 {
 272     int pos = Combo()->GetSelection();
 273     bool changed = (pos != m_startint);
 274     if (changed)
 275     {
 276         if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_NUMBER))
 277             grid->GetTable()->SetValueAsLong(row, col, pos);
 278         else
 279             grid->GetTable()->SetValue(row, col,wxString::Format(wxT("%i"),pos));
 280     }
 281
 282     return changed;
 283 }
 284
 285 #endif // wxUSE_COMBOBOX
 286
 287 // ----------------------------------------------------------------------------
 288 // wxGridCellAutoWrapStringEditor
 289 // ----------------------------------------------------------------------------
 290
 291 void
 292 wxGridCellAutoWrapStringEditor::Create(wxWindow* parent,
 293                                        wxWindowID id,
 294                                        wxEvtHandler* evtHandler)
 295 {
 296   m_control = new wxTextCtrl(parent, id, wxEmptyString,
 297                              wxDefaultPosition, wxDefaultSize,
 298                              wxTE_MULTILINE | wxTE_RICH);
 299
 300
 301   wxGridCellEditor::Create(parent, id, evtHandler);
 302 }
 303
 304 void
 305 wxGridCellAutoWrapStringRenderer::Draw(wxGrid& grid,
 306                       wxGridCellAttr& attr,
 307                       wxDC& dc,
 308                       const wxRect& rectCell,
 309                       int row, int col,
 310                       bool isSelected) {
 311
 312
 313     wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
 314
 315     // now we only have to draw the text
 316     SetTextColoursAndFont(grid, attr, dc, isSelected);
 317
 318     int horizAlign, vertAlign;
 319     attr.GetAlignment(&horizAlign, &vertAlign);
 320
 321     wxRect rect = rectCell;
 322     rect.Inflate(-1);
 323
 324     grid.DrawTextRectangle(dc, GetTextLines(grid,dc,attr,rect,row,col),
 325                            rect, horizAlign, vertAlign);
 326 }
 327
 328
 329 wxArrayString
 330 wxGridCellAutoWrapStringRenderer::GetTextLines(wxGrid& grid,
 331                                                wxDC& dc,
 332                                                wxGridCellAttr& attr,
 333                                                const wxRect& rect,
 334                                                int row, int col)
 335 {
 336     wxString  data = grid.GetCellValue(row, col);
 337
 338     wxArrayString lines;
 339     dc.SetFont(attr.GetFont());
 340
 341     //Taken from wxGrid again!
 342     wxCoord x = 0, y = 0, curr_x = 0;
 343     wxCoord max_x = rect.GetWidth();
 344
 345     dc.SetFont(attr.GetFont());
 346     wxStringTokenizer tk(data , _T(" \n\t\r"));
 347     wxString thisline = wxEmptyString;
 348
 349     while ( tk.HasMoreTokens() )
 350     {
 351         wxString tok = tk.GetNextToken();
 352     //FIXME: this causes us to print an extra unnecesary
 353     //       space at the end of the line. But it
 354     //       is invisible , simplifies the size calculation
 355     //       and ensures tokens are seperated in the display
 356     tok += _T(" ");
 357
 358         dc.GetTextExtent(tok, &x, &y);
 359         if ( curr_x + x > max_x) {
 360             lines.Add( wxString(thisline) );
 361         thisline = tok;
 362         curr_x=x;
 363     } else {
 364             thisline+= tok;
 365         curr_x += x;
 366     }
 367
 368     }
 369     //Add last line
 370     lines.Add( wxString(thisline) );
 371
 372     return lines;
 373 }
 374
 375
 376 wxSize
 377 wxGridCellAutoWrapStringRenderer::GetBestSize(wxGrid& grid,
 378                                               wxGridCellAttr& attr,
 379                                               wxDC& dc,
 380                                               int row, int col)
 381 {
 382     wxCoord x,y, height , width = grid.GetColSize(col) -10;
 383     int count = 250; //Limit iterations..
 384
 385     wxRect rect(0,0,width,10);
 386
 387     // M is a nice large character 'y' gives descender!.
 388     dc.GetTextExtent(wxT("My"), &x, &y);
 389
 390     do
 391     {
 392         width+=10;
 393         rect.SetWidth(width);
 394         height = y *( GetTextLines(grid,dc,attr,rect,row,col).GetCount());
 395         count--;
 396     // Search for a shape no taller than the golden ratio.
 397     } while (count && (width  < (height*1.68)) );
 398
 399
 400     return wxSize(width,height);
 401 }
 402
 403 #endif // wxUSE_GRID
 404