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