include/wx/generic/private/grid.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/generic/private/grid.h
   3 // Purpose:     Private wxGrid structures
   4 // Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
   5 // Modified by: Santiago Palacios
   6 // Created:     1/08/1999
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Michael Bedward
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GENERIC_GRID_PRIVATE_H_
  13 #define _WX_GENERIC_GRID_PRIVATE_H_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_GRID
  18
  19 // ----------------------------------------------------------------------------
  20 // array classes
  21 // ----------------------------------------------------------------------------
  22
  23 WX_DEFINE_ARRAY_WITH_DECL_PTR(wxGridCellAttr *, wxArrayAttrs,
  24                                  class WXDLLIMPEXP_ADV);
  25
  26 struct wxGridCellWithAttr
  27 {
  28     wxGridCellWithAttr(int row, int col, wxGridCellAttr *attr_)
  29         : coords(row, col), attr(attr_)
  30     {
  31         wxASSERT( attr );
  32     }
  33
  34     wxGridCellWithAttr(const wxGridCellWithAttr& other)
  35         : coords(other.coords),
  36           attr(other.attr)
  37     {
  38         attr->IncRef();
  39     }
  40
  41     wxGridCellWithAttr& operator=(const wxGridCellWithAttr& other)
  42     {
  43         coords = other.coords;
  44         if (attr != other.attr)
  45         {
  46             attr->DecRef();
  47             attr = other.attr;
  48             attr->IncRef();
  49         }
  50         return *this;
  51     }
  52
  53     void ChangeAttr(wxGridCellAttr* new_attr)
  54     {
  55         if (attr != new_attr)
  56         {
  57             // "Delete" (i.e. DecRef) the old attribute.
  58             attr->DecRef();
  59             attr = new_attr;
  60             // Take ownership of the new attribute, i.e. no IncRef.
  61         }
  62     }
  63
  64     ~wxGridCellWithAttr()
  65     {
  66         attr->DecRef();
  67     }
  68
  69     wxGridCellCoords coords;
  70     wxGridCellAttr  *attr;
  71 };
  72
  73 WX_DECLARE_OBJARRAY_WITH_DECL(wxGridCellWithAttr, wxGridCellWithAttrArray,
  74                               class WXDLLIMPEXP_ADV);
  75
  76
  77 // ----------------------------------------------------------------------------
  78 // private classes
  79 // ----------------------------------------------------------------------------
  80
  81 // header column providing access to the column information stored in wxGrid
  82 // via wxHeaderColumn interface
  83 class wxGridHeaderColumn : public wxHeaderColumn
  84 {
  85 public:
  86     wxGridHeaderColumn(wxGrid *grid, int col)
  87         : m_grid(grid),
  88           m_col(col)
  89     {
  90     }
  91
  92     virtual wxString GetTitle() const { return m_grid->GetColLabelValue(m_col); }
  93     virtual wxBitmap GetBitmap() const { return wxNullBitmap; }
  94     virtual int GetWidth() const { return m_grid->GetColSize(m_col); }
  95     virtual int GetMinWidth() const { return 0; }
  96     virtual wxAlignment GetAlignment() const
  97     {
  98         int horz,
  99             vert;
 100         m_grid->GetColLabelAlignment(&horz, &vert);
 101
 102         return static_cast<wxAlignment>(horz);
 103     }
 104
 105     virtual int GetFlags() const
 106     {
 107         // we can't know in advance whether we can sort by this column or not
 108         // with wxGrid API so suppose we can by default
 109         int flags = wxCOL_SORTABLE;
 110         if ( m_grid->CanDragColSize(m_col) )
 111             flags |= wxCOL_RESIZABLE;
 112         if ( m_grid->CanDragColMove() )
 113             flags |= wxCOL_REORDERABLE;
 114         if ( GetWidth() == 0 )
 115             flags |= wxCOL_HIDDEN;
 116
 117         return flags;
 118     }
 119
 120     virtual bool IsSortKey() const
 121     {
 122         return m_grid->IsSortingBy(m_col);
 123     }
 124
 125     virtual bool IsSortOrderAscending() const
 126     {
 127         return m_grid->IsSortOrderAscending();
 128     }
 129
 130 private:
 131     // these really should be const but are not because the column needs to be
 132     // assignable to be used in a wxVector (in STL build, in non-STL build we
 133     // avoid the need for this)
 134     wxGrid *m_grid;
 135     int m_col;
 136 };
 137
 138 // header control retreiving column information from the grid
 139 class wxGridHeaderCtrl : public wxHeaderCtrl
 140 {
 141 public:
 142     wxGridHeaderCtrl(wxGrid *owner)
 143         : wxHeaderCtrl(owner,
 144                        wxID_ANY,
 145                        wxDefaultPosition,
 146                        wxDefaultSize,
 147                        wxHD_ALLOW_HIDE |
 148                        (owner->CanDragColMove() ? wxHD_ALLOW_REORDER : 0))
 149     {
 150     }
 151
 152 protected:
 153     virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
 154     {
 155         return m_columns[idx];
 156     }
 157
 158 private:
 159     wxGrid *GetOwner() const { return static_cast<wxGrid *>(GetParent()); }
 160
 161     // override the base class method to update our m_columns array
 162     virtual void OnColumnCountChanging(unsigned int count)
 163     {
 164         const unsigned countOld = m_columns.size();
 165         if ( count < countOld )
 166         {
 167             // just discard the columns which don't exist any more (notice that
 168             // we can't use resize() here as it would require the vector
 169             // value_type, i.e. wxGridHeaderColumn to be default constructible,
 170             // which it is not)
 171             m_columns.erase(m_columns.begin() + count, m_columns.end());
 172         }
 173         else // new columns added
 174         {
 175             // add columns for the new elements
 176             for ( unsigned n = countOld; n < count; n++ )
 177                 m_columns.push_back(wxGridHeaderColumn(GetOwner(), n));
 178         }
 179     }
 180
 181     // override to implement column auto sizing
 182     virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 183     {
 184         // TODO: currently grid doesn't support computing the column best width
 185         //       from its contents so we just use the best label width as is
 186         GetOwner()->SetColSize(idx, widthTitle);
 187
 188         return true;
 189     }
 190
 191     // overridden to react to the actions using the columns popup menu
 192     virtual void UpdateColumnVisibility(unsigned int idx, bool show)
 193     {
 194         GetOwner()->SetColSize(idx, show ? wxGRID_AUTOSIZE : 0);
 195
 196         // as this is done by the user we should notify the main program about
 197         // it
 198
 199         // make up a dummy event for the grid event to use -- unfortunately we
 200         // can't do anything else here
 201         wxMouseEvent e;
 202         e.SetState(wxGetMouseState());
 203         GetOwner()->SendSizeEvent(wxEVT_GRID_COL_SIZE, -1, idx, e);
 204     }
 205
 206     // overridden to react to the columns order changes in the customization
 207     // dialog
 208     virtual void UpdateColumnsOrder(const wxArrayInt& order)
 209     {
 210         GetOwner()->SetColumnsOrder(order);
 211     }
 212
 213
 214     // event handlers forwarding wxHeaderCtrl events to wxGrid
 215     void OnClick(wxHeaderCtrlEvent& event)
 216     {
 217         GetOwner()->DoColHeaderClick(event.GetColumn());
 218     }
 219
 220     void OnBeginResize(wxHeaderCtrlEvent& event)
 221     {
 222         GetOwner()->DoStartResizeCol(event.GetColumn());
 223
 224         event.Skip();
 225     }
 226
 227     void OnResizing(wxHeaderCtrlEvent& event)
 228     {
 229         GetOwner()->DoUpdateResizeColWidth(event.GetWidth());
 230     }
 231
 232     void OnEndResize(wxHeaderCtrlEvent& event)
 233     {
 234         // we again need to pass a mouse event to be used for the grid event
 235         // generation but we don't have it here so use a dummy one as in
 236         // UpdateColumnVisibility()
 237         wxMouseEvent e;
 238         e.SetState(wxGetMouseState());
 239         GetOwner()->DoEndDragResizeCol(e);
 240
 241         event.Skip();
 242     }
 243
 244     void OnBeginReorder(wxHeaderCtrlEvent& event)
 245     {
 246         GetOwner()->DoStartMoveCol(event.GetColumn());
 247     }
 248
 249     void OnEndReorder(wxHeaderCtrlEvent& event)
 250     {
 251         GetOwner()->DoEndMoveCol(event.GetNewOrder());
 252     }
 253
 254     wxVector<wxGridHeaderColumn> m_columns;
 255
 256     DECLARE_EVENT_TABLE()
 257     wxDECLARE_NO_COPY_CLASS(wxGridHeaderCtrl);
 258 };
 259
 260 // common base class for various grid subwindows
 261 class WXDLLIMPEXP_ADV wxGridSubwindow : public wxWindow
 262 {
 263 public:
 264     wxGridSubwindow(wxGrid *owner,
 265                     int additionalStyle = 0,
 266                     const wxString& name = wxPanelNameStr)
 267         : wxWindow(owner, wxID_ANY,
 268                    wxDefaultPosition, wxDefaultSize,
 269                    wxBORDER_NONE | additionalStyle,
 270                    name)
 271     {
 272         m_owner = owner;
 273     }
 274
 275     virtual bool AcceptsFocus() const { return false; }
 276
 277     wxGrid *GetOwner() { return m_owner; }
 278
 279 protected:
 280     void OnMouseCaptureLost(wxMouseCaptureLostEvent& event);
 281
 282     wxGrid *m_owner;
 283
 284     DECLARE_EVENT_TABLE()
 285     wxDECLARE_NO_COPY_CLASS(wxGridSubwindow);
 286 };
 287
 288 class WXDLLIMPEXP_ADV wxGridRowLabelWindow : public wxGridSubwindow
 289 {
 290 public:
 291     wxGridRowLabelWindow(wxGrid *parent)
 292       : wxGridSubwindow(parent)
 293     {
 294     }
 295
 296
 297 private:
 298     void OnPaint( wxPaintEvent& event );
 299     void OnMouseEvent( wxMouseEvent& event );
 300     void OnMouseWheel( wxMouseEvent& event );
 301
 302     DECLARE_EVENT_TABLE()
 303     wxDECLARE_NO_COPY_CLASS(wxGridRowLabelWindow);
 304 };
 305
 306
 307 class WXDLLIMPEXP_ADV wxGridColLabelWindow : public wxGridSubwindow
 308 {
 309 public:
 310     wxGridColLabelWindow(wxGrid *parent)
 311         : wxGridSubwindow(parent)
 312     {
 313     }
 314
 315
 316 private:
 317     void OnPaint( wxPaintEvent& event );
 318     void OnMouseEvent( wxMouseEvent& event );
 319     void OnMouseWheel( wxMouseEvent& event );
 320
 321     DECLARE_EVENT_TABLE()
 322     wxDECLARE_NO_COPY_CLASS(wxGridColLabelWindow);
 323 };
 324
 325
 326 class WXDLLIMPEXP_ADV wxGridCornerLabelWindow : public wxGridSubwindow
 327 {
 328 public:
 329     wxGridCornerLabelWindow(wxGrid *parent)
 330         : wxGridSubwindow(parent)
 331     {
 332     }
 333
 334 private:
 335     void OnMouseEvent( wxMouseEvent& event );
 336     void OnMouseWheel( wxMouseEvent& event );
 337     void OnPaint( wxPaintEvent& event );
 338
 339     DECLARE_EVENT_TABLE()
 340     wxDECLARE_NO_COPY_CLASS(wxGridCornerLabelWindow);
 341 };
 342
 343 class WXDLLIMPEXP_ADV wxGridWindow : public wxGridSubwindow
 344 {
 345 public:
 346     wxGridWindow(wxGrid *parent)
 347         : wxGridSubwindow(parent,
 348                           wxWANTS_CHARS | wxCLIP_CHILDREN,
 349                           "GridWindow")
 350     {
 351     }
 352
 353
 354     virtual void ScrollWindow( int dx, int dy, const wxRect *rect );
 355
 356     virtual bool AcceptsFocus() const { return true; }
 357
 358 private:
 359     void OnPaint( wxPaintEvent &event );
 360     void OnMouseWheel( wxMouseEvent& event );
 361     void OnMouseEvent( wxMouseEvent& event );
 362     void OnKeyDown( wxKeyEvent& );
 363     void OnKeyUp( wxKeyEvent& );
 364     void OnChar( wxKeyEvent& );
 365     void OnEraseBackground( wxEraseEvent& );
 366     void OnFocus( wxFocusEvent& );
 367
 368     DECLARE_EVENT_TABLE()
 369     wxDECLARE_NO_COPY_CLASS(wxGridWindow);
 370 };
 371
 372 // ----------------------------------------------------------------------------
 373 // the internal data representation used by wxGridCellAttrProvider
 374 // ----------------------------------------------------------------------------
 375
 376 // this class stores attributes set for cells
 377 class WXDLLIMPEXP_ADV wxGridCellAttrData
 378 {
 379 public:
 380     void SetAttr(wxGridCellAttr *attr, int row, int col);
 381     wxGridCellAttr *GetAttr(int row, int col) const;
 382     void UpdateAttrRows( size_t pos, int numRows );
 383     void UpdateAttrCols( size_t pos, int numCols );
 384
 385 private:
 386     // searches for the attr for given cell, returns wxNOT_FOUND if not found
 387     int FindIndex(int row, int col) const;
 388
 389     wxGridCellWithAttrArray m_attrs;
 390 };
 391
 392 // this class stores attributes set for rows or columns
 393 class WXDLLIMPEXP_ADV wxGridRowOrColAttrData
 394 {
 395 public:
 396     // empty ctor to suppress warnings
 397     wxGridRowOrColAttrData() {}
 398     ~wxGridRowOrColAttrData();
 399
 400     void SetAttr(wxGridCellAttr *attr, int rowOrCol);
 401     wxGridCellAttr *GetAttr(int rowOrCol) const;
 402     void UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols );
 403
 404 private:
 405     wxArrayInt m_rowsOrCols;
 406     wxArrayAttrs m_attrs;
 407 };
 408
 409 // NB: this is just a wrapper around 3 objects: one which stores cell
 410 //     attributes, and 2 others for row/col ones
 411 class WXDLLIMPEXP_ADV wxGridCellAttrProviderData
 412 {
 413 public:
 414     wxGridCellAttrData m_cellAttrs;
 415     wxGridRowOrColAttrData m_rowAttrs,
 416                            m_colAttrs;
 417 };
 418
 419 // ----------------------------------------------------------------------------
 420 // operations classes abstracting the difference between operating on rows and
 421 // columns
 422 // ----------------------------------------------------------------------------
 423
 424 // This class allows to write a function only once because by using its methods
 425 // it will apply to both columns and rows.
 426 //
 427 // This is an abstract interface definition, the two concrete implementations
 428 // below should be used when working with rows and columns respectively.
 429 class wxGridOperations
 430 {
 431 public:
 432     // Returns the operations in the other direction, i.e. wxGridRowOperations
 433     // if this object is a wxGridColumnOperations and vice versa.
 434     virtual wxGridOperations& Dual() const = 0;
 435
 436     // Return the number of rows or columns.
 437     virtual int GetNumberOfLines(const wxGrid *grid) const = 0;
 438
 439     // Return the selection mode which allows selecting rows or columns.
 440     virtual wxGrid::wxGridSelectionModes GetSelectionMode() const = 0;
 441
 442     // Make a wxGridCellCoords from the given components: thisDir is row or
 443     // column and otherDir is column or row
 444     virtual wxGridCellCoords MakeCoords(int thisDir, int otherDir) const = 0;
 445
 446     // Calculate the scrolled position of the given abscissa or ordinate.
 447     virtual int CalcScrolledPosition(wxGrid *grid, int pos) const = 0;
 448
 449     // Selects the horizontal or vertical component from the given object.
 450     virtual int Select(const wxGridCellCoords& coords) const = 0;
 451     virtual int Select(const wxPoint& pt) const = 0;
 452     virtual int Select(const wxSize& sz) const = 0;
 453     virtual int Select(const wxRect& r) const = 0;
 454     virtual int& Select(wxRect& r) const = 0;
 455
 456     // Returns width or height of the rectangle
 457     virtual int& SelectSize(wxRect& r) const = 0;
 458
 459     // Make a wxSize such that Select() applied to it returns first component
 460     virtual wxSize MakeSize(int first, int second) const = 0;
 461
 462     // Sets the row or column component of the given cell coordinates
 463     virtual void Set(wxGridCellCoords& coords, int line) const = 0;
 464
 465
 466     // Draws a line parallel to the row or column, i.e. horizontal or vertical:
 467     // pos is the horizontal or vertical position of the line and start and end
 468     // are the coordinates of the line extremities in the other direction
 469     virtual void
 470         DrawParallelLine(wxDC& dc, int start, int end, int pos) const = 0;
 471
 472     // Draw a horizontal or vertical line across the given rectangle
 473     // (this is implemented in terms of above and uses Select() to extract
 474     // start and end from the given rectangle)
 475     void DrawParallelLineInRect(wxDC& dc, const wxRect& rect, int pos) const
 476     {
 477         const int posStart = Select(rect.GetPosition());
 478         DrawParallelLine(dc, posStart, posStart + Select(rect.GetSize()), pos);
 479     }
 480
 481
 482     // Return the index of the row or column at the given pixel coordinate.
 483     virtual int
 484         PosToLine(const wxGrid *grid, int pos, bool clip = false) const = 0;
 485
 486     // Get the top/left position, in pixels, of the given row or column
 487     virtual int GetLineStartPos(const wxGrid *grid, int line) const = 0;
 488
 489     // Get the bottom/right position, in pixels, of the given row or column
 490     virtual int GetLineEndPos(const wxGrid *grid, int line) const = 0;
 491
 492     // Get the height/width of the given row/column
 493     virtual int GetLineSize(const wxGrid *grid, int line) const = 0;
 494
 495     // Get wxGrid::m_rowBottoms/m_colRights array
 496     virtual const wxArrayInt& GetLineEnds(const wxGrid *grid) const = 0;
 497
 498     // Get default height row height or column width
 499     virtual int GetDefaultLineSize(const wxGrid *grid) const = 0;
 500
 501     // Return the minimal acceptable row height or column width
 502     virtual int GetMinimalAcceptableLineSize(const wxGrid *grid) const = 0;
 503
 504     // Return the minimal row height or column width
 505     virtual int GetMinimalLineSize(const wxGrid *grid, int line) const = 0;
 506
 507     // Set the row height or column width
 508     virtual void SetLineSize(wxGrid *grid, int line, int size) const = 0;
 509
 510     // Set the row default height or column default width
 511     virtual void SetDefaultLineSize(wxGrid *grid, int size, bool resizeExisting) const = 0;
 512
 513
 514     // Return the index of the line at the given position
 515     //
 516     // NB: currently this is always identity for the rows as reordering is only
 517     //     implemented for the lines
 518     virtual int GetLineAt(const wxGrid *grid, int line) const = 0;
 519
 520
 521     // Get the row or column label window
 522     virtual wxWindow *GetHeaderWindow(wxGrid *grid) const = 0;
 523
 524     // Get the width or height of the row or column label window
 525     virtual int GetHeaderWindowSize(wxGrid *grid) const = 0;
 526
 527
 528     // This class is never used polymorphically but give it a virtual dtor
 529     // anyhow to suppress g++ complaints about it
 530     virtual ~wxGridOperations() { }
 531 };
 532
 533 class wxGridRowOperations : public wxGridOperations
 534 {
 535 public:
 536     virtual wxGridOperations& Dual() const;
 537
 538     virtual int GetNumberOfLines(const wxGrid *grid) const
 539         { return grid->GetNumberRows(); }
 540
 541     virtual wxGrid::wxGridSelectionModes GetSelectionMode() const
 542         { return wxGrid::wxGridSelectRows; }
 543
 544     virtual wxGridCellCoords MakeCoords(int thisDir, int otherDir) const
 545         { return wxGridCellCoords(thisDir, otherDir); }
 546
 547     virtual int CalcScrolledPosition(wxGrid *grid, int pos) const
 548         { return grid->CalcScrolledPosition(wxPoint(pos, 0)).x; }
 549
 550     virtual int Select(const wxGridCellCoords& c) const { return c.GetRow(); }
 551     virtual int Select(const wxPoint& pt) const { return pt.x; }
 552     virtual int Select(const wxSize& sz) const { return sz.x; }
 553     virtual int Select(const wxRect& r) const { return r.x; }
 554     virtual int& Select(wxRect& r) const { return r.x; }
 555     virtual int& SelectSize(wxRect& r) const { return r.width; }
 556     virtual wxSize MakeSize(int first, int second) const
 557         { return wxSize(first, second); }
 558     virtual void Set(wxGridCellCoords& coords, int line) const
 559         { coords.SetRow(line); }
 560
 561     virtual void DrawParallelLine(wxDC& dc, int start, int end, int pos) const
 562         { dc.DrawLine(start, pos, end, pos); }
 563
 564     virtual int PosToLine(const wxGrid *grid, int pos, bool clip = false) const
 565         { return grid->YToRow(pos, clip); }
 566     virtual int GetLineStartPos(const wxGrid *grid, int line) const
 567         { return grid->GetRowTop(line); }
 568     virtual int GetLineEndPos(const wxGrid *grid, int line) const
 569         { return grid->GetRowBottom(line); }
 570     virtual int GetLineSize(const wxGrid *grid, int line) const
 571         { return grid->GetRowHeight(line); }
 572     virtual const wxArrayInt& GetLineEnds(const wxGrid *grid) const
 573         { return grid->m_rowBottoms; }
 574     virtual int GetDefaultLineSize(const wxGrid *grid) const
 575         { return grid->GetDefaultRowSize(); }
 576     virtual int GetMinimalAcceptableLineSize(const wxGrid *grid) const
 577         { return grid->GetRowMinimalAcceptableHeight(); }
 578     virtual int GetMinimalLineSize(const wxGrid *grid, int line) const
 579         { return grid->GetRowMinimalHeight(line); }
 580     virtual void SetLineSize(wxGrid *grid, int line, int size) const
 581         { grid->SetRowSize(line, size); }
 582     virtual void SetDefaultLineSize(wxGrid *grid, int size, bool resizeExisting) const
 583         {  grid->SetDefaultRowSize(size, resizeExisting); }
 584
 585     virtual int GetLineAt(const wxGrid * WXUNUSED(grid), int line) const
 586         { return line; } // TODO: implement row reordering
 587
 588     virtual wxWindow *GetHeaderWindow(wxGrid *grid) const
 589         { return grid->GetGridRowLabelWindow(); }
 590     virtual int GetHeaderWindowSize(wxGrid *grid) const
 591         { return grid->GetRowLabelSize(); }
 592 };
 593
 594 class wxGridColumnOperations : public wxGridOperations
 595 {
 596 public:
 597     virtual wxGridOperations& Dual() const;
 598
 599     virtual int GetNumberOfLines(const wxGrid *grid) const
 600         { return grid->GetNumberCols(); }
 601
 602     virtual wxGrid::wxGridSelectionModes GetSelectionMode() const
 603         { return wxGrid::wxGridSelectColumns; }
 604
 605     virtual wxGridCellCoords MakeCoords(int thisDir, int otherDir) const
 606         { return wxGridCellCoords(otherDir, thisDir); }
 607
 608     virtual int CalcScrolledPosition(wxGrid *grid, int pos) const
 609         { return grid->CalcScrolledPosition(wxPoint(0, pos)).y; }
 610
 611     virtual int Select(const wxGridCellCoords& c) const { return c.GetCol(); }
 612     virtual int Select(const wxPoint& pt) const { return pt.y; }
 613     virtual int Select(const wxSize& sz) const { return sz.y; }
 614     virtual int Select(const wxRect& r) const { return r.y; }
 615     virtual int& Select(wxRect& r) const { return r.y; }
 616     virtual int& SelectSize(wxRect& r) const { return r.height; }
 617     virtual wxSize MakeSize(int first, int second) const
 618         { return wxSize(second, first); }
 619     virtual void Set(wxGridCellCoords& coords, int line) const
 620         { coords.SetCol(line); }
 621
 622     virtual void DrawParallelLine(wxDC& dc, int start, int end, int pos) const
 623         { dc.DrawLine(pos, start, pos, end); }
 624
 625     virtual int PosToLine(const wxGrid *grid, int pos, bool clip = false) const
 626         { return grid->XToCol(pos, clip); }
 627     virtual int GetLineStartPos(const wxGrid *grid, int line) const
 628         { return grid->GetColLeft(line); }
 629     virtual int GetLineEndPos(const wxGrid *grid, int line) const
 630         { return grid->GetColRight(line); }
 631     virtual int GetLineSize(const wxGrid *grid, int line) const
 632         { return grid->GetColWidth(line); }
 633     virtual const wxArrayInt& GetLineEnds(const wxGrid *grid) const
 634         { return grid->m_colRights; }
 635     virtual int GetDefaultLineSize(const wxGrid *grid) const
 636         { return grid->GetDefaultColSize(); }
 637     virtual int GetMinimalAcceptableLineSize(const wxGrid *grid) const
 638         { return grid->GetColMinimalAcceptableWidth(); }
 639     virtual int GetMinimalLineSize(const wxGrid *grid, int line) const
 640         { return grid->GetColMinimalWidth(line); }
 641     virtual void SetLineSize(wxGrid *grid, int line, int size) const
 642         { grid->SetColSize(line, size); }
 643     virtual void SetDefaultLineSize(wxGrid *grid, int size, bool resizeExisting) const
 644         {  grid->SetDefaultColSize(size, resizeExisting); }
 645
 646     virtual int GetLineAt(const wxGrid *grid, int line) const
 647         { return grid->GetColAt(line); }
 648
 649     virtual wxWindow *GetHeaderWindow(wxGrid *grid) const
 650         { return grid->GetGridColLabelWindow(); }
 651     virtual int GetHeaderWindowSize(wxGrid *grid) const
 652         { return grid->GetColLabelSize(); }
 653 };
 654
 655 // This class abstracts the difference between operations going forward
 656 // (down/right) and backward (up/left) and allows to use the same code for
 657 // functions which differ only in the direction of grid traversal
 658 //
 659 // Like wxGridOperations it's an ABC with two concrete subclasses below. Unlike
 660 // it, this is a normal object and not just a function dispatch table and has a
 661 // non-default ctor.
 662 //
 663 // Note: the explanation of this discrepancy is the existence of (very useful)
 664 // Dual() method in wxGridOperations which forces us to make wxGridOperations a
 665 // function dispatcher only.
 666 class wxGridDirectionOperations
 667 {
 668 public:
 669     // The oper parameter to ctor selects whether we work with rows or columns
 670     wxGridDirectionOperations(wxGrid *grid, const wxGridOperations& oper)
 671         : m_grid(grid),
 672           m_oper(oper)
 673     {
 674     }
 675
 676     // Check if the component of this point in our direction is at the
 677     // boundary, i.e. is the first/last row/column
 678     virtual bool IsAtBoundary(const wxGridCellCoords& coords) const = 0;
 679
 680     // Increment the component of this point in our direction
 681     virtual void Advance(wxGridCellCoords& coords) const = 0;
 682
 683     // Find the line at the given distance, in pixels, away from this one
 684     // (this uses clipping, i.e. anything after the last line is counted as the
 685     // last one and anything before the first one as 0)
 686     virtual int MoveByPixelDistance(int line, int distance) const = 0;
 687
 688     // This class is never used polymorphically but give it a virtual dtor
 689     // anyhow to suppress g++ complaints about it
 690     virtual ~wxGridDirectionOperations() { }
 691
 692 protected:
 693     wxGrid * const m_grid;
 694     const wxGridOperations& m_oper;
 695 };
 696
 697 class wxGridBackwardOperations : public wxGridDirectionOperations
 698 {
 699 public:
 700     wxGridBackwardOperations(wxGrid *grid, const wxGridOperations& oper)
 701         : wxGridDirectionOperations(grid, oper)
 702     {
 703     }
 704
 705     virtual bool IsAtBoundary(const wxGridCellCoords& coords) const
 706     {
 707         wxASSERT_MSG( m_oper.Select(coords) >= 0, "invalid row/column" );
 708
 709         return m_oper.Select(coords) == 0;
 710     }
 711
 712     virtual void Advance(wxGridCellCoords& coords) const
 713     {
 714         wxASSERT( !IsAtBoundary(coords) );
 715
 716         m_oper.Set(coords, m_oper.Select(coords) - 1);
 717     }
 718
 719     virtual int MoveByPixelDistance(int line, int distance) const
 720     {
 721         int pos = m_oper.GetLineStartPos(m_grid, line);
 722         return m_oper.PosToLine(m_grid, pos - distance + 1, true);
 723     }
 724 };
 725
 726 class wxGridForwardOperations : public wxGridDirectionOperations
 727 {
 728 public:
 729     wxGridForwardOperations(wxGrid *grid, const wxGridOperations& oper)
 730         : wxGridDirectionOperations(grid, oper),
 731           m_numLines(oper.GetNumberOfLines(grid))
 732     {
 733     }
 734
 735     virtual bool IsAtBoundary(const wxGridCellCoords& coords) const
 736     {
 737         wxASSERT_MSG( m_oper.Select(coords) < m_numLines, "invalid row/column" );
 738
 739         return m_oper.Select(coords) == m_numLines - 1;
 740     }
 741
 742     virtual void Advance(wxGridCellCoords& coords) const
 743     {
 744         wxASSERT( !IsAtBoundary(coords) );
 745
 746         m_oper.Set(coords, m_oper.Select(coords) + 1);
 747     }
 748
 749     virtual int MoveByPixelDistance(int line, int distance) const
 750     {
 751         int pos = m_oper.GetLineStartPos(m_grid, line);
 752         return m_oper.PosToLine(m_grid, pos + distance, true);
 753     }
 754
 755 private:
 756     const int m_numLines;
 757 };
 758
 759 // ----------------------------------------------------------------------------
 760 // private helpers
 761 // ----------------------------------------------------------------------------
 762
 763 namespace
 764 {
 765
 766 // ensure that first is less or equal to second, swapping the values if
 767 // necessary
 768 void EnsureFirstLessThanSecond(int& first, int& second)
 769 {
 770     if ( first > second )
 771         wxSwap(first, second);
 772 }
 773
 774 } // anonymous namespace
 775
 776 // ----------------------------------------------------------------------------
 777 // data structures used for the data type registry
 778 // ----------------------------------------------------------------------------
 779
 780 struct wxGridDataTypeInfo
 781 {
 782     wxGridDataTypeInfo(const wxString& typeName,
 783                        wxGridCellRenderer* renderer,
 784                        wxGridCellEditor* editor)
 785         : m_typeName(typeName), m_renderer(renderer), m_editor(editor)
 786         {}
 787
 788     ~wxGridDataTypeInfo()
 789     {
 790         wxSafeDecRef(m_renderer);
 791         wxSafeDecRef(m_editor);
 792     }
 793
 794     wxString            m_typeName;
 795     wxGridCellRenderer* m_renderer;
 796     wxGridCellEditor*   m_editor;
 797
 798     wxDECLARE_NO_COPY_CLASS(wxGridDataTypeInfo);
 799 };
 800
 801
 802 WX_DEFINE_ARRAY_WITH_DECL_PTR(wxGridDataTypeInfo*, wxGridDataTypeInfoArray,
 803                                  class WXDLLIMPEXP_ADV);
 804
 805
 806 class WXDLLIMPEXP_ADV wxGridTypeRegistry
 807 {
 808 public:
 809     wxGridTypeRegistry() {}
 810     ~wxGridTypeRegistry();
 811
 812     void RegisterDataType(const wxString& typeName,
 813                      wxGridCellRenderer* renderer,
 814                      wxGridCellEditor* editor);
 815
 816     // find one of already registered data types
 817     int FindRegisteredDataType(const wxString& typeName);
 818
 819     // try to FindRegisteredDataType(), if this fails and typeName is one of
 820     // standard typenames, register it and return its index
 821     int FindDataType(const wxString& typeName);
 822
 823     // try to FindDataType(), if it fails see if it is not one of already
 824     // registered data types with some params in which case clone the
 825     // registered data type and set params for it
 826     int FindOrCloneDataType(const wxString& typeName);
 827
 828     wxGridCellRenderer* GetRenderer(int index);
 829     wxGridCellEditor*   GetEditor(int index);
 830
 831 private:
 832     wxGridDataTypeInfoArray m_typeinfo;
 833 };
 834
 835 #endif // wxUSE_GRID
 836 #endif // _WX_GENERIC_GRID_PRIVATE_H_