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