contrib/src/gizmos/multicell.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        multicell.cpp
   3 // Purpose:     provide two new classes for layout, wxMultiCellSizer and wxMultiCellCanvas
   4 // Author:      Jonathan Bayer
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id:
   8 // Copyright:   (c) Jonathan Bayer
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // This was inspired by the gbsizer class written by Alex Andruschak
  13
  14 #ifdef __GNUG__
  15         #pragma implementation "multicell.h"
  16 #endif
  17
  18 // For compilers that support precompilation, includes "wx.h".
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22         #pragma hdrstop
  23 #endif
  24
  25 // ----------------------------------------------------------------------------
  26 // headers
  27 // ----------------------------------------------------------------------------
  28
  29 #ifndef WX_PRECOMP
  30         #include "wx/wx.h"
  31 #endif
  32
  33 #include        "wx/gizmos/multicell.h"
  34
  35
  36
  37
  38 //---------------------------------------------------------------------------
  39
  40 IMPLEMENT_ABSTRACT_CLASS(wxMultiCellSizer, wxSizer);
  41 IMPLEMENT_ABSTRACT_CLASS(wxMultiCellItemHandle, wxRect);
  42
  43 //---------------------------------------------------------------------------
  44 // wxMultiCellItemHandle
  45 //---------------------------------------------------------------------------
  46 /*
  47  *Function Name:        wxMultiCellItemHandle :: wxMultiCellItemHandle
  48  *
  49  *Parameters:           int             row
  50  *                                      int                     column
  51  *                                      int             height
  52  *                                      int                     width
  53  *                                      wxSize          size
  54  *                                      wxResizable Style
  55  *                                      wxSize          weight
  56  *                                      int             align
  57  *
  58  *Description:  This is the constructor for the class.
  59  *
  60  */
  61
  62 void wxMultiCellItemHandle :: Initialize( int row, int column, int height, int width, wxSize size, wxResizable Style, wxSize weight, int align)
  63 {
  64         m_column = column;
  65         m_row = row;
  66         m_width = width;
  67         m_height = height;
  68
  69         m_style = Style;
  70         m_fixedSize = size;
  71         m_alignment = align;
  72         m_weight = weight;
  73 }
  74 //---------------------------------------------------------------------------
  75 wxMultiCellItemHandle :: wxMultiCellItemHandle( int row, int column, int height, int width, wxSize size, wxResizable Style, wxSize weight, int align)
  76 {
  77         Initialize(row, column,height, width, size, Style, weight, align);
  78 }
  79 //---------------------------------------------------------------------------
  80 wxMultiCellItemHandle :: wxMultiCellItemHandle( int row, int column, wxSize size, wxResizable style, wxSize weight, int align)
  81 {
  82         Initialize(row, column,1, 1, size, style, weight, align);
  83 }
  84 //---------------------------------------------------------------------------
  85 wxMultiCellItemHandle :: wxMultiCellItemHandle( int row, int column, wxResizable style, wxSize weight, int align)
  86 {
  87         Initialize(row, column, 1, 1, wxSize(1, 1), style, weight, align);
  88 }
  89 //---------------------------------------------------------------------------
  90 wxMultiCellItemHandle :: wxMultiCellItemHandle( int row, int column, int align)
  91 {
  92         Initialize(row, column, 1, 1, wxSize(1,1), wxNOT_RESIZABLE, wxSize(1, 1), align);
  93 }
  94
  95 //---------------------------------------------------------------------------
  96 int wxMultiCellItemHandle::GetColumn()
  97 {
  98         return m_column;
  99 }
 100 //---------------------------------------------------------------------------
 101 int wxMultiCellItemHandle::GetRow()
 102 {
 103         return m_row;
 104 }
 105 //---------------------------------------------------------------------------
 106 int wxMultiCellItemHandle::GetWidth()
 107 {
 108         return m_width;
 109 }
 110 //---------------------------------------------------------------------------
 111 int wxMultiCellItemHandle::GetHeight()
 112 {
 113         return m_height;
 114 }
 115 //---------------------------------------------------------------------------
 116 wxResizable    wxMultiCellItemHandle :: GetStyle()
 117 {
 118         return m_style;
 119 };
 120 //---------------------------------------------------------------------------
 121 wxSize wxMultiCellItemHandle :: GetLocalSize()
 122 {
 123         return m_fixedSize;
 124 };
 125 //---------------------------------------------------------------------------
 126 int wxMultiCellItemHandle :: GetAlignment()
 127 {
 128         return m_alignment;
 129 };
 130 //---------------------------------------------------------------------------
 131 wxSize wxMultiCellItemHandle :: GetWeight()
 132 {
 133         return m_weight;
 134 };
 135
 136
 137
 138 //---------------------------------------------------------------------------
 139
 140 //---------------------------------------------------------------------------
 141 // wxMultiCellSizer
 142 //---------------------------------------------------------------------------
 143
 144 /*
 145  *Function Name:        wxMultiCellSizer::Initialize
 146  *
 147  *Parameters:           wxsize          Initial size of sizer
 148  *
 149  *Description:          This is a common function to initialize all the members of
 150  *                                      this class.  It is only called from the constructors
 151  *
 152  */
 153
 154 void wxMultiCellSizer::Initialize( wxSize size )
 155 {
 156         m_cell_count = size;
 157         m_maxHeight = (int *)malloc((1 + m_cell_count.GetHeight()) * sizeof(int));
 158         m_maxWidth = (int *)malloc( (1 + m_cell_count.GetWidth()) * sizeof(int));
 159         m_rowStretch = (int *)malloc( (1 + m_cell_count.GetHeight()) * sizeof(int));
 160         m_colStretch = (int *)malloc((1 + m_cell_count.GetWidth()) * sizeof(int));
 161
 162         m_weights = (wxSize **)malloc((1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth())) * sizeof(wxSize *));
 163         m_minSizes = (wxSize **)malloc((1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth())) * sizeof(wxSize *));
 164         for (int x = 0; x < 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 165         {
 166                 m_weights[x] = new wxSize(0,0);
 167                 m_minSizes[x] = new wxSize(0,0);
 168         }
 169
 170         m_maxWeights = 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth());
 171         m_defaultCellSize = wxSize(5, 5);
 172         m_win = NULL;
 173         m_pen = wxRED_PEN;
 174 }
 175 //---------------------------------------------------------------------------
 176 wxMultiCellSizer::wxMultiCellSizer( wxSize & size )
 177 {
 178         Initialize(size);
 179 }
 180 //---------------------------------------------------------------------------
 181 wxMultiCellSizer::wxMultiCellSizer( int rows, int cols)
 182 {
 183         wxSize size(cols, rows);
 184         Initialize(size);
 185 }
 186 //---------------------------------------------------------------------------
 187 wxMultiCellSizer::~wxMultiCellSizer()
 188 {
 189         m_children.DeleteContents(TRUE);
 190
 191         free(m_maxHeight);
 192         free(m_maxWidth);
 193         free(m_rowStretch);
 194         free(m_colStretch);
 195
 196         for (int x = 0; x < 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 197         {
 198                 delete m_weights[x];
 199                 delete m_minSizes[x];
 200         }
 201         free(m_weights);
 202         free(m_minSizes);
 203 }
 204 //---------------------------------------------------------------------------
 205 bool wxMultiCellSizer::EnableGridLines(wxWindow *win)
 206 {
 207         m_win = win;
 208         return TRUE;
 209 }
 210 //---------------------------------------------------------------------------
 211 bool wxMultiCellSizer::SetGridPen(wxPen *pen)
 212 {
 213         m_pen = pen;
 214         return TRUE;
 215 }
 216
 217 //---------------------------------------------------------------------------
 218 bool wxMultiCellSizer::SetDefaultCellSize(wxSize size)
 219 {
 220         m_defaultCellSize = size;
 221         return TRUE;
 222 }
 223 //---------------------------------------------------------------------------
 224 bool wxMultiCellSizer::SetColumnWidth(int column, int colSize, bool expandable)
 225 {
 226         if (expandable)
 227         {
 228                 m_minSizes[column]->SetWidth(-colSize);
 229         }
 230         else
 231         {
 232                 m_minSizes[column]->SetWidth(colSize);
 233         }
 234         return TRUE;
 235 }
 236 //---------------------------------------------------------------------------
 237 bool wxMultiCellSizer::SetRowHeight(int row, int rowSize, bool expandable)
 238 {
 239         if (expandable)
 240         {
 241                 m_minSizes[row]->SetHeight(-rowSize);
 242         }
 243         else
 244         {
 245                 m_minSizes[row]->SetHeight(rowSize);
 246         }
 247         return TRUE;
 248 }
 249 //---------------------------------------------------------------------------
 250 void wxMultiCellSizer::RecalcSizes()
 251 {
 252         if (m_children.GetCount() == 0)
 253                 return;
 254         wxSize size = GetSize();
 255         wxPoint pos = GetPosition();
 256
 257         GetMinimums();
 258
 259         // We need to take the unused space and equally give it out to all the rows/columns
 260         // which are stretchable
 261
 262         int unUsedWidth = size.GetWidth() - Sum(m_maxWidth, m_cell_count.GetWidth());
 263         int unUsedHeight = size.GetHeight() - Sum(m_maxHeight, m_cell_count.GetHeight());
 264         int totalWidthWeight = 0;
 265         int totalHeightWeight = 0;
 266         int x;
 267
 268         for (x = 0; x < wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 269         {
 270                 if (m_rowStretch[x])
 271                 {
 272                         totalHeightWeight += m_weights[x]->GetHeight();
 273                 }
 274                 if (x < m_cell_count.GetWidth() && m_colStretch[x])
 275                 {
 276                         totalWidthWeight += m_weights[x]->GetWidth();
 277                 }
 278         }
 279         for (x = 0; x < wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 280         {
 281                 if (x < m_cell_count.GetHeight() && m_rowStretch[x])
 282                 {
 283                         m_maxHeight[x] += unUsedHeight * m_weights[x]->GetHeight() / totalHeightWeight;
 284                 }
 285                 if (x < m_cell_count.GetWidth() && m_colStretch[x])
 286                 {
 287                         m_maxWidth[x] += unUsedWidth * m_weights[x]->GetWidth() / totalWidthWeight;
 288                 }
 289         }
 290         // We now have everything we need to figure each cell position and size
 291         // The arrays m_maxHeight and m_maxWidth now contain the final widths and height of
 292         // each row and column.
 293
 294         double cell_width = (double)size.GetWidth() / (double)m_cell_count.GetWidth();
 295         double cell_height = (double)size.GetHeight() / (double)m_cell_count.GetHeight();
 296         wxPoint c_point;
 297         wxSize  c_size;
 298
 299         wxNode *current;
 300         current = m_children.GetFirst();
 301         while (current != NULL)
 302         {
 303                 wxSizerItem *item = (wxSizerItem*) current->Data();
 304
 305                 wxMultiCellItemHandle *rect;
 306                 if (item != NULL &&
 307                         (rect = (wxMultiCellItemHandle *)item->GetUserData()) != NULL)
 308                 {
 309                         c_point.x = pos.x + (int)(rect->GetColumn() * cell_width);
 310                         c_point.y = pos.y + (int)(rect->GetRow() * cell_height);
 311
 312                         c_point.x = pos.x + Sum(m_maxWidth, rect->GetColumn());
 313                         c_point.y = pos.y + Sum(m_maxHeight, rect->GetRow());
 314
 315
 316                         c_size = rect->GetLocalSize();
 317                         wxSize minSize( item->CalcMin() );
 318                         if (c_size.GetHeight() != wxDefaultSize.GetHeight() ||
 319                                 c_size.GetWidth() != wxDefaultSize.GetWidth())
 320                         {
 321                                 minSize.SetHeight(wxMax(minSize.GetHeight(), c_size.GetHeight()));
 322                                 minSize.SetWidth(wxMax(minSize.GetWidth(), c_size.GetWidth()));
 323                         }
 324                         if (rect->GetStyle() & wxHORIZENTAL_RESIZABLE ||
 325                                 rect->GetWidth() > 1
 326                                 || m_minSizes[rect->GetColumn()]->GetWidth() < 0)
 327                         {
 328                                 int w = 0;
 329                                 for (int x = 0; x < rect->GetWidth(); x++)
 330                                 {
 331                                         w += m_maxWidth[rect->GetColumn() + x];
 332                                 }
 333                                 c_size.SetWidth(w);
 334                         }
 335                         else
 336                         {
 337                                 c_size.SetWidth(minSize.GetWidth() );
 338                         }
 339                         if (rect->GetStyle() & wxVERTICAL_RESIZABLE ||
 340                                 rect->GetHeight() > 1 ||
 341                                 m_minSizes[rect->GetRow()]->GetHeight() < 0)
 342                         {
 343                                 int h = 0;
 344                                 for (int x = 0; x < rect->GetHeight(); x++)
 345                                 {
 346                                         h += m_maxHeight[rect->GetRow() + x];
 347                                 }
 348                                 c_size.SetHeight(h);
 349                         }
 350                         else
 351                         {
 352                                 c_size.SetHeight(minSize.GetHeight());
 353                         }
 354                         int extraHeight = (m_maxHeight[rect->GetRow()] - c_size.GetHeight());
 355                         int extraWidth = (m_maxWidth[rect->GetColumn()] - c_size.GetWidth());
 356
 357                         if (rect->GetWidth() == 1 && rect->GetAlignment() & wxALIGN_CENTER_HORIZONTAL)
 358                         {
 359                                 c_point.x += extraWidth / 2;
 360                         }
 361                         if (rect->GetWidth() == 1 && rect->GetAlignment() & wxALIGN_RIGHT)
 362                         {
 363                                 c_point.x += extraWidth;
 364                         }
 365                         if (rect->GetHeight() == 1 && rect->GetAlignment() & wxALIGN_CENTER_VERTICAL)
 366                         {
 367                                 c_point.y += extraHeight / 2;
 368                         }
 369                         if (rect->GetHeight() == 1 && rect->GetAlignment() & wxALIGN_BOTTOM)
 370                         {
 371                                 c_point.y += extraHeight;
 372                         }
 373                         item->SetDimension(c_point, c_size);
 374                 }
 375                 current = current->Next();
 376         }
 377 }
 378 //---------------------------------------------------------------------------
 379 wxSize wxMultiCellSizer::CalcMin()
 380 {
 381         if (m_children.GetCount() == 0)
 382                 return wxSize(10,10);
 383
 384         int m_minWidth = 0;
 385         int m_minHeight = 0;
 386
 387         GetMinimums();
 388         m_minWidth = Sum(m_maxWidth, m_cell_count.GetWidth());
 389         m_minHeight = Sum(m_maxHeight, m_cell_count.GetHeight());
 390         return wxSize( m_minWidth, m_minHeight );
 391 }
 392 //---------------------------------------------------------------------------
 393 void wxMultiCellSizer :: GetMinimums()
 394 {
 395         // We first initial all the arrays EXCEPT for the m_minsizes array.
 396
 397         memset(m_maxHeight, 0, sizeof(int) * m_cell_count.GetHeight());
 398         memset(m_maxWidth, 0, sizeof(int) * m_cell_count.GetWidth());
 399         memset(m_rowStretch, 0, sizeof(int) * m_cell_count.GetHeight());
 400         memset(m_colStretch, 0, sizeof(int) * m_cell_count.GetWidth());
 401         for (int x = 0; x < 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 402         {
 403                 m_weights[x]->SetHeight(0);
 404                 m_weights[x]->SetWidth(0);
 405         }
 406
 407         wxNode *node = m_children.GetFirst();
 408         while (node)
 409         {
 410                 wxSizerItem *item = (wxSizerItem*) node->Data();
 411                 wxMultiCellItemHandle *rect;
 412                 if (item != NULL &&
 413                         (rect = (wxMultiCellItemHandle *)item->GetUserData()) != NULL)
 414                 {
 415                         int row = rect->GetRow();
 416                         int col = rect->GetColumn();
 417
 418                         // First make sure that the control knows about the max rows and columns
 419
 420                         int changed = FALSE;
 421                         if (row + 1 > m_cell_count.GetHeight())
 422                         {
 423                                 changed++;
 424                                 m_maxHeight = (int *)realloc(m_maxHeight, (1 + row) * sizeof(int));
 425                                 m_rowStretch = (int *)realloc(m_rowStretch, (1 + row) * sizeof(int));
 426                                 for (int x = m_cell_count.GetHeight(); x < row + 1; x++)
 427                                 {
 428                                         m_maxHeight[x - 1] = 0;
 429                                         m_rowStretch[x - 1] = 0;
 430                                 }
 431                                 m_cell_count.SetHeight(row + 1);
 432                         }
 433                         if (col + 1 > m_cell_count.GetWidth())
 434                         {
 435                                 changed++;
 436                                 m_maxWidth = (int *)realloc(m_maxWidth, (1 + col) * sizeof(int));
 437                                 m_colStretch = (int *)realloc(m_colStretch, ( 1 + col) * sizeof(int));
 438                                 for (int x = m_cell_count.GetWidth(); x < col + 1; x++)
 439                                 {
 440                                         m_maxWidth[x - 1] = 0;
 441                                         m_colStretch[x - 1] = 0;
 442                                 }
 443                                 m_cell_count.SetWidth(col + 1);
 444                         }
 445                         if (changed)
 446                         {
 447                                 m_weights = (wxSize **)realloc(m_weights, (1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth())) * sizeof(wxSize *));
 448                                 m_minSizes = (wxSize **)realloc(m_minSizes, (1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth())) * sizeof(wxSize *));
 449                                 for (int x = m_maxWeights; x < 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth()); x++)
 450                                 {
 451                                         m_weights[x - 1] = new wxSize(0,0);
 452                                         m_minSizes[x - 1] = new wxSize(0,0);
 453                                 }
 454                                 m_maxWeights = 1 + wxMax(m_cell_count.GetHeight(), m_cell_count.GetWidth());
 455                         }
 456
 457                         // Sum the m_weights for each row/column, but only if they are resizable
 458
 459                         wxSize minSize( item->CalcMin() );
 460                         wxSize c_size = rect->GetLocalSize();
 461                         if (c_size.GetHeight() != wxDefaultSize.GetHeight() ||
 462                                 c_size.GetWidth() != wxDefaultSize.GetWidth())
 463                         {
 464                                 minSize.SetHeight(wxMax(minSize.GetHeight(), c_size.GetHeight()));
 465                                 minSize.SetWidth(wxMax(minSize.GetWidth(), c_size.GetWidth()));
 466                         }
 467
 468                         // For each row, calculate the max height for those fields which are not
 469                         // resizable in the vertical pane
 470
 471                         if (!(rect->GetStyle() & wxVERTICAL_RESIZABLE || m_minSizes[row]->GetHeight() < 0))
 472                         {
 473                                 m_maxHeight[row] = wxMax(m_maxHeight[row], minSize.GetHeight() / rect->GetHeight());
 474                         }
 475                         else
 476                         {
 477                                 m_rowStretch[row] = 1;
 478                                 if (m_minSizes[row]->GetHeight())
 479                                 {
 480                                         m_maxHeight[row] = abs(m_minSizes[row]->GetHeight());
 481                                 }
 482                                 else
 483                                 {
 484                                         m_maxHeight[row] = wxMax(m_maxHeight[row], m_defaultCellSize.GetHeight());
 485                                 }
 486                                 m_weights[row]->SetHeight(wxMax(m_weights[row]->GetHeight(), rect->GetWeight().GetHeight()));
 487                         }
 488
 489                         // For each column, calculate the max width for those fields which are not
 490                         // resizable in the horizontal pane
 491
 492                         if (!(rect->GetStyle() & wxHORIZENTAL_RESIZABLE || m_minSizes[col]->GetWidth() < 0))
 493                         {
 494                                 if (m_minSizes[col]->GetWidth())
 495                                 {
 496                                         m_maxWidth[col] = abs(m_minSizes[col]->GetWidth());
 497                                 }
 498                                 else
 499                                 {
 500                                         m_maxWidth[col] = wxMax(m_maxWidth[col], minSize.GetWidth() / rect->GetWidth());
 501                                 }
 502                         }
 503                         else
 504                         {
 505                                 m_colStretch[col] = 1;
 506                                 m_maxWidth[col] = wxMax(m_maxWidth[col], m_defaultCellSize.GetWidth());
 507                                 m_weights[col]->SetWidth(wxMax(m_weights[col]->GetWidth(), rect->GetWeight().GetWidth()));
 508                         }
 509                         node = node->Next();
 510                 }
 511         }
 512 } // wxMultiCellSizer :: GetMinimums
 513 //---------------------------------------------------------------------------
 514 /*
 515  *Function Name:        wxMultiCellSizer :: Sum
 516  *
 517  *Parameters:           int *           pointer to array of ints
 518  *                                      int                     Number of cells to sum up
 519  *
 520  *Description:          This member function sums up all the elements of the array which
 521  *                                      preceed the specified cell.
 522  *
 523  *Returns:                      int                     Sum
 524  *
 525  */
 526
 527 int wxMultiCellSizer :: Sum(int *array, int x)
 528 {
 529         int sum = 0;
 530         while (x--)
 531         {
 532                 sum += array[x];
 533         }
 534         return sum;
 535 }
 536 //---------------------------------------------------------------------------
 537 /*
 538  *Function Name:        wxMultiCellSizer :: DrawGridLines
 539  *
 540  *Parameters:           wxDC            Device context
 541  *
 542  *Description:          This function draws the grid lines in the specified device context.
 543  *
 544  */
 545
 546 void wxMultiCellSizer :: DrawGridLines(wxDC& dc)
 547 {
 548         RecalcSizes();
 549         int maxW = Sum(m_maxWidth, m_cell_count.GetWidth());
 550         int maxH = Sum(m_maxHeight, m_cell_count.GetHeight());
 551         int x;
 552
 553         // Draw the columns
 554         dc.SetPen(* m_pen);
 555         for (x = 1; x < m_cell_count.GetWidth(); x++)
 556         {
 557                 int colPos = Sum(m_maxWidth, x) ;
 558                 dc.DrawLine(colPos, 0, colPos, maxH);
 559         }
 560
 561         // Draw the rows
 562         for (x = 1; x < m_cell_count.GetHeight(); x++)
 563         {
 564                 int rowPos = Sum(m_maxHeight, x);
 565                 dc.DrawLine(0, rowPos, maxW, rowPos);
 566         }
 567 }
 568 //---------------------------------------------------------------------------
 569 // Define the repainting behaviour
 570 /*
 571  *Function Name:        wxMultiCellSizer::OnPaint
 572  *
 573  *Parameters:           wxDC    Device context
 574  *
 575  *Description:          This function calls the DrawGridLines() member if a window
 576  *                                      has been previously specified.  This functions MUST be called
 577  *                                      from an OnPaint member belonging to the window which the sizer
 578  *                                      is attached to.
 579  *
 580  */
 581
 582 void wxMultiCellSizer::OnPaint(wxDC& dc )
 583 {
 584         if (m_win)
 585         {
 586                 DrawGridLines(dc);
 587         }
 588 }
 589
 590
 591 //---------------------------------------------------------------------------
 592 //---------------------------------------------------------------------------
 593
 594
 595
 596
 597 #define CELL_LOC(row, col)      ((row) * m_maxCols + col)
 598
 599 //---------------------------------------------------------------------------
 600 // wxCell
 601 //---------------------------------------------------------------------------
 602 /*
 603  *Function Name:        wxCell : wxLayoutConstraints
 604  *
 605  *Description:          This class is used by wxMultiCellCanvas for internal storage
 606  *
 607  */
 608
 609 class wxCell : public wxLayoutConstraints
 610 {
 611 public:
 612         wxCell(wxWindow *win)
 613         {
 614                 m_window = win;
 615         };
 616
 617         wxWindow    *m_window;
 618 };
 619
 620
 621
 622 //---------------------------------------------------------------------------
 623 // wxMultiCellCanvas
 624 //---------------------------------------------------------------------------
 625 wxMultiCellCanvas :: wxMultiCellCanvas(wxWindow *par, int numRows, int numCols)
 626    : wxFlexGridSizer(numRows, numCols, 0, 0)
 627 {
 628         m_cells = (wxCell **)calloc(numRows * numCols, sizeof(wxCell *));
 629
 630         m_parent = par;
 631         m_maxRows = numRows;
 632         m_maxCols = numCols;
 633         m_minCellSize = wxSize(5, 5);
 634 }
 635 //---------------------------------------------------------------------------
 636 wxString itoa(int x)
 637 {
 638         char    bfr[255];
 639         sprintf(bfr, "%d", x);
 640         return bfr;
 641 }
 642 //---------------------------------------------------------------------------
 643 void wxMultiCellCanvas :: Add(wxWindow *win, unsigned int row, unsigned int col)
 644 {
 645         wxASSERT_MSG(row >= 0 && row < m_maxRows, wxString("Row ") + itoa(row) + " out of bounds (" + itoa(m_maxRows) + ")");
 646         wxASSERT_MSG(col >= 0 && col < m_maxCols, wxString("Column ") + itoa(col) + " out of bounds (" + itoa(m_maxCols) + ")");
 647         wxASSERT_MSG(m_cells[CELL_LOC(row, col)] == NULL, "Cell already occupied");
 648
 649         wxCell *newCell = new wxCell(win);
 650         m_cells[CELL_LOC(row,col)] = newCell;
 651 }
 652 //---------------------------------------------------------------------------
 653 void wxMultiCellCanvas :: CalculateConstraints()
 654 {
 655         unsigned int    row, col;
 656         for (row = 0; row < m_maxRows; row++)
 657         {
 658                 for (col = 0; col < m_maxCols; col++)
 659                 {
 660                         if (!m_cells[CELL_LOC(row, col)])
 661                         {
 662                                 // Create an empty static text field as a placeholder
 663                                 m_cells[CELL_LOC(row, col)] = new wxCell(new wxStaticText(m_parent, -1, ""));
 664                         }
 665                         wxFlexGridSizer::Add(m_cells[CELL_LOC(row, col)]->m_window);
 666                 }
 667         }
 668 }
 669
 670 /*** End of File ***/