grid.h

Wxpython Implemented on Windows CE, Source code

    // ------ display update functions
    //
    wxArrayInt CalcRowLabelsExposed( const wxRegion& reg );

    wxArrayInt CalcColLabelsExposed( const wxRegion& reg );
    wxGridCellCoordsArray CalcCellsExposed( const wxRegion& reg );


    // ------ event handlers
    //
    void ProcessRowLabelMouseEvent( wxMouseEvent& event );
    void ProcessColLabelMouseEvent( wxMouseEvent& event );
    void ProcessCornerLabelMouseEvent( wxMouseEvent& event );
    void ProcessGridCellMouseEvent( wxMouseEvent& event );
    bool ProcessTableMessage( wxGridTableMessage& );

    void DoEndDragResizeRow();
    void DoEndDragResizeCol();
    void DoEndDragMoveCol();

    wxGridTableBase * GetTable() const { return m_table; }
    bool SetTable( wxGridTableBase *table, bool takeOwnership = false,
                   wxGrid::wxGridSelectionModes selmode =
                   wxGrid::wxGridSelectCells );

    void ClearGrid();
    bool InsertRows( int pos = 0, int numRows = 1, bool updateLabels = true );
    bool AppendRows( int numRows = 1, bool updateLabels = true );
    bool DeleteRows( int pos = 0, int numRows = 1, bool updateLabels = true );
    bool InsertCols( int pos = 0, int numCols = 1, bool updateLabels = true );
    bool AppendCols( int numCols = 1, bool updateLabels = true );
    bool DeleteCols( int pos = 0, int numCols = 1, bool updateLabels = true );

    void DrawGridCellArea( wxDC& dc , const wxGridCellCoordsArray& cells );
    void DrawGridSpace( wxDC& dc );
    void DrawCellBorder( wxDC& dc, const wxGridCellCoords& );
    void DrawAllGridLines( wxDC& dc, const wxRegion & reg );
    void DrawCell( wxDC& dc, const wxGridCellCoords& );
    void DrawHighlight(wxDC& dc, const wxGridCellCoordsArray& cells);

    // this function is called when the current cell highlight must be redrawn
    // and may be overridden by the user
    virtual void DrawCellHighlight( wxDC& dc, const wxGridCellAttr *attr );

    virtual void DrawRowLabels( wxDC& dc, const wxArrayInt& rows );
    virtual void DrawRowLabel( wxDC& dc, int row );

    virtual void DrawColLabels( wxDC& dc, const wxArrayInt& cols );
    virtual void DrawColLabel( wxDC& dc, int col );


    // ------ Cell text drawing functions
    //
    void DrawTextRectangle( wxDC& dc, const wxString&, const wxRect&,
                            int horizontalAlignment = wxALIGN_LEFT,
                            int verticalAlignment = wxALIGN_TOP,
                            int textOrientation = wxHORIZONTAL );

    void DrawTextRectangle( wxDC& dc, const wxArrayString& lines, const wxRect&,
                            int horizontalAlignment = wxALIGN_LEFT,
                            int verticalAlignment = wxALIGN_TOP,
                            int textOrientation = wxHORIZONTAL );


    // Split a string containing newline chararcters into an array of
    // strings and return the number of lines
    //
    void StringToLines( const wxString& value, wxArrayString& lines );

    void GetTextBoxSize( const wxDC& dc,
                         const wxArrayString& lines,
                         long *width, long *height );


    // ------
    // Code that does a lot of grid modification can be enclosed
    // between BeginBatch() and EndBatch() calls to avoid screen
    // flicker
    //
    void     BeginBatch() { m_batchCount++; }
    void     EndBatch();

    int      GetBatchCount() { return m_batchCount; }

    virtual void Refresh(bool eraseb = true,
                         const wxRect* rect = (const wxRect *)  NULL);

    // Use this, rather than wxWindow::Refresh(), to force an
    // immediate repainting of the grid. Has no effect if you are
    // already inside a BeginBatch / EndBatch block.
    //
    // This function is necessary because wxGrid has a minimal OnPaint()
    // handler to reduce screen flicker.
    //
    void     ForceRefresh();


    // ------ edit control functions
    //
    bool IsEditable() const { return m_editable; }
    void EnableEditing( bool edit );

    void EnableCellEditControl( bool enable = true );
    void DisableCellEditControl() { EnableCellEditControl(false); }
    bool CanEnableCellControl() const;
    bool IsCellEditControlEnabled() const;
    bool IsCellEditControlShown() const;

    bool IsCurrentCellReadOnly() const;

    void ShowCellEditControl();
    void HideCellEditControl();
    void SaveEditControlValue();


    // ------ grid location functions
    //  Note that all of these functions work with the logical coordinates of
    //  grid cells and labels so you will need to convert from device
    //  coordinates for mouse events etc.
    //
    void XYToCell( int x, int y, wxGridCellCoords& );
    int  YToRow( int y );
    int  XToCol( int x, bool clipToMinMax = false );

    int  YToEdgeOfRow( int y );
    int  XToEdgeOfCol( int x );

    wxRect CellToRect( int row, int col );
    wxRect CellToRect( const wxGridCellCoords& coords )
        { return CellToRect( coords.GetRow(), coords.GetCol() ); }

    int  GetGridCursorRow() { return m_currentCellCoords.GetRow(); }
    int  GetGridCursorCol() { return m_currentCellCoords.GetCol(); }

    // check to see if a cell is either wholly visible (the default arg) or
    // at least partially visible in the grid window
    //
    bool IsVisible( int row, int col, bool wholeCellVisible = true );
    bool IsVisible( const wxGridCellCoords& coords, bool wholeCellVisible = true )
        { return IsVisible( coords.GetRow(), coords.GetCol(), wholeCellVisible ); }
    void MakeCellVisible( int row, int col );
    void MakeCellVisible( const wxGridCellCoords& coords )
        { MakeCellVisible( coords.GetRow(), coords.GetCol() ); }


    // ------ grid cursor movement functions
    //
    void SetGridCursor( int row, int col )
        { SetCurrentCell( wxGridCellCoords(row, col) ); }

    bool MoveCursorUp( bool expandSelection );
    bool MoveCursorDown( bool expandSelection );
    bool MoveCursorLeft( bool expandSelection );
    bool MoveCursorRight( bool expandSelection );
    bool MovePageDown();
    bool MovePageUp();
    bool MoveCursorUpBlock( bool expandSelection );
    bool MoveCursorDownBlock( bool expandSelection );
    bool MoveCursorLeftBlock( bool expandSelection );
    bool MoveCursorRightBlock( bool expandSelection );


    // ------ label and gridline formatting
    //
    int      GetDefaultRowLabelSize() { return WXGRID_DEFAULT_ROW_LABEL_WIDTH; }
    int      GetRowLabelSize() { return m_rowLabelWidth; }
    int      GetDefaultColLabelSize() { return WXGRID_DEFAULT_COL_LABEL_HEIGHT; }
    int      GetColLabelSize() { return m_colLabelHeight; }
    wxColour GetLabelBackgroundColour() { return m_labelBackgroundColour; }
    wxColour GetLabelTextColour() { return m_labelTextColour; }
    wxFont   GetLabelFont() { return m_labelFont; }
    void     GetRowLabelAlignment( int *horiz, int *vert );
    void     GetColLabelAlignment( int *horiz, int *vert );
    int      GetColLabelTextOrientation();
    wxString GetRowLabelValue( int row );
    wxString GetColLabelValue( int col );
    wxColour GetGridLineColour() { return m_gridLineColour; }
    wxColour GetCellHighlightColour() { return m_cellHighlightColour; }
    int      GetCellHighlightPenWidth() { return m_cellHighlightPenWidth; }
    int      GetCellHighlightROPenWidth() { return m_cellHighlightROPenWidth; }

    void     SetRowLabelSize( int width );
    void     SetColLabelSize( int height );
    void     SetLabelBackgroundColour( const wxColour& );
    void     SetLabelTextColour( const wxColour& );
    void     SetLabelFont( const wxFont& );
    void     SetRowLabelAlignment( int horiz, int vert );
    void     SetColLabelAlignment( int horiz, int vert );
    void     SetColLabelTextOrientation( int textOrientation );
    void     SetRowLabelValue( int row, const wxString& );
    void     SetColLabelValue( int col, const wxString& );
    void     SetGridLineColour( const wxColour& );
    void     SetCellHighlightColour( const wxColour& );
    void     SetCellHighlightPenWidth(int width);
    void     SetCellHighlightROPenWidth(int width);

    void     EnableDragRowSize( bool enable = true );
    void     DisableDragRowSize() { EnableDragRowSize( false ); }
    bool     CanDragRowSize() { return m_canDragRowSize; }
    void     EnableDragColSize( bool enable = true );
    void     DisableDragColSize() { EnableDragColSize( false ); }
    bool     CanDragColSize() { return m_canDragColSize; }
    void     EnableDragColMove( bool enable = true );
    void     DisableDragColMove() { EnableDragColMove( false ); }
    bool     CanDragColMove() { return m_canDragColMove; }
    void     EnableDragGridSize(bool enable = true);
    void     DisableDragGridSize() { EnableDragGridSize(false); }
    bool     CanDragGridSize() { return m_canDragGridSize; }

    void     EnableDragCell( bool enable = true );
    void     DisableDragCell() { EnableDragCell( false ); }
    bool     CanDragCell() { return m_canDragCell; }

    // this sets the specified attribute for this cell or in this row/col
    void     SetAttr(int row, int col, wxGridCellAttr *attr);
    void     SetRowAttr(int row, wxGridCellAttr *attr);
    void     SetColAttr(int col, wxGridCellAttr *attr);

    // returns the attribute we may modify in place: a new one if this cell
    // doesn't have any yet or the existing one if it does
    //
    // DecRef() must be called on the returned pointer, as usual
    wxGridCellAttr *GetOrCreateCellAttr(int row, int col) const;


    // shortcuts for setting the column parameters

    // set the format for the data in the column: default is string
    void     SetColFormatBool(int col);
    void     SetColFormatNumber(int col);
    void     SetColFormatFloat(int col, int width = -1, int precision = -1);
    void     SetColFormatCustom(int col, const wxString& typeName);

    void     EnableGridLines( bool enable = true );
    bool     GridLinesEnabled() { return m_gridLinesEnabled; }

    // ------ row and col formatting
    //
    int      GetDefaultRowSize();
    int      GetRowSize( int row );
    int      GetDefaultColSize();
    int      GetColSize( int col );
    wxColour GetDefaultCellBackgroundColour();
    wxColour GetCellBackgroundColour( int row, int col );
    wxColour GetDefaultCellTextColour();
    wxColour GetCellTextColour( int row, int col );
    wxFont   GetDefaultCellFont();
    wxFont   GetCellFont( int row, int col );
    void     GetDefaultCellAlignment( int *horiz, int *vert );
    void     GetCellAlignment( int row, int col, int *horiz, int *vert );
    bool     GetDefaultCellOverflow();
    bool     GetCellOverflow( int row, int col );
    void     GetCellSize( int row, int col, int *num_rows, int *num_cols );

    void     SetDefaultRowSize( int height, bool resizeExistingRows = false );
    void     SetRowSize( int row, int height );
    void     SetDefaultColSize( int width, bool resizeExistingCols = false );

    void     SetColSize( int col, int width );

    //Column positions
    int GetColAt( int colPos ) const
    {
        if ( m_colAt.IsEmpty() )
            return colPos;
        else
            return m_colAt[colPos];
    }

    void SetColPos( int colID, int newPos );

    int GetColPos( int colID ) const
    {
        if ( m_colAt.IsEmpty() )
            return colID;
        else
        {
            for ( int i = 0; i < m_numCols; i++ )
            {
                if ( m_colAt[i] == colID )
                    return i;
            }
        }

        return -1;
    }

    // automatically size the column or row to fit to its contents, if
    // setAsMin is true, this optimal width will also be set as minimal width
    // for this column
    void     AutoSizeColumn( int col, bool setAsMin = true )
        { AutoSizeColOrRow(col, setAsMin, true); }
    void     AutoSizeRow( int row, bool setAsMin = true )
        { AutoSizeColOrRow(row, setAsMin, false); }

    // auto size all columns (very ineffective for big grids!)
    void     AutoSizeColumns( bool setAsMin = true )
        { (void)SetOrCalcColumnSizes(false, setAsMin); }

    void     AutoSizeRows( bool setAsMin = true )
        { (void)SetOrCalcRowSizes(false, setAsMin); }

    // auto size the grid, that is make the columns/rows of the "right" size
    // and also set the grid size to just fit its contents
    void     AutoSize();

    // autosize row height depending on label text
    void     AutoSizeRowLabelSize( int row );

    // autosize column width depending on label text
    void     AutoSizeColLabelSize( int col );

    // column won't be resized to be lesser width - this must be called during
    // the grid creation because it won't resize the column if it's already
    // narrower than the minimal width
    void     SetColMinimalWidth( int col, int width );
    void     SetRowMinimalHeight( int row, int width );

    /*  These members can be used to query and modify the minimal
     *  acceptable size of grid rows and columns. Call this function in
     *  your code which creates the grid if you want to display cells
     *  with a size smaller than the default acceptable minimum size.
     *  Like the members SetColMinimalWidth and SetRowMinimalWidth,
     *  the existing rows or columns will not be checked/resized.
     */
    void     SetColMinimalAcceptableWidth( int width );
    void     SetRowMinimalAcceptableHeight( int width );
    int      GetColMinimalAcceptableWidth() const;
    int      GetRowMinimalAcceptableHeight() const;

    void     SetDefaultCellBackgroundColour( const wxColour& );
    void     SetCellBackgroundColour( int row, int col, const wxColour& );
    void     SetDefaultCellTextColour( const wxColour& );

    void     SetCellTextColour( int row, int col, const wxColour& );
    void     SetDefaultCellFont( const wxFont& );
    void     SetCellFont( int row, int col, const wxFont& );
    void     SetDefaultCellAlignment( int horiz, int vert );
    void     SetCellAlignment( int row, int col, int horiz, int vert );
    void     SetDefaultCellOverflow( bool allow );
    void     SetCellOverflow( int row, int col, bool allow );
    void     SetCellSize( int row, int col, int num_rows, int num_cols );

    // takes ownership of the pointer
    void SetDefaultRenderer(wxGridCellRenderer *renderer);
    void SetCellRenderer(int row, int col, wxGridCellRenderer *renderer);
    wxGridCellRenderer *GetDefaultRenderer() const;
    wxGridCellRenderer* GetCellRenderer(int row, int col);

    // takes ownership of the pointer
    void SetDefaultEditor(wxGridCellEditor *editor);
    void SetCellEditor(int row, int col, wxGridCellEditor *editor);
    wxGridCellEditor *GetDefaultEditor() const;
    wxGridCellEditor* GetCellEditor(int row, int col);



    // ------ cell value accessors
    //
    wxString GetCellValue( int row, int col )
    {
        if ( m_table )
        {
            return m_table->GetValue( row, col );
        }
        else
        {
            return wxEmptyString;
        }