class wxGridCellAttr
{
public:
+ /**
+ Kind of the attribute to retrieve.
+
+ @see wxGridCellAttrProvider::GetAttr(), wxGridTableBase::GetAttr()
+ */
+ enum wxAttrKind
+ {
+ /// Return the combined effective attribute for the cell.
+ Any,
+
+ /// Return the attribute explicitly set for this cell.
+ Cell,
+
+ /// Return the attribute set for this cells row.
+ Row,
+
+ /// Return the attribute set for this cells column.
+ Col
+ };
+
/**
Default constructor.
*/
void DecRef();
/**
- See SetAlignment() for the returned values.
+ Get the alignment to use for the cell with the given attribute.
+
+ If this attribute doesn't specify any alignment, the default attribute
+ alignment is used (which can be changed using
+ wxGrid::SetDefaultCellAlignment() but is left and top by default).
+
+ Notice that @a hAlign and @a vAlign values are always overwritten by
+ this function, use GetNonDefaultAlignment() if this is not desirable.
+
+ @param hAlign
+ Horizontal alignment is returned here if this argument is non-@NULL.
+ It is one of wxALIGN_LEFT, wxALIGN_CENTRE or wxALIGN_RIGHT.
+ @param vAlign
+ Vertical alignment is returned here if this argument is non-@NULL.
+ It is one of wxALIGN_TOP, wxALIGN_CENTRE or wxALIGN_BOTTOM.
*/
void GetAlignment(int* hAlign, int* vAlign) const;
*/
const wxFont& GetFont() const;
+ /**
+ Get the alignment defined by this attribute.
+
+ Unlike GetAlignment() this function only modifies @a hAlign and @a
+ vAlign if this attribute does define a non-default alignment. This
+ means that they must be initialized before calling this function and
+ that their values will be preserved unchanged if they are different
+ from wxALIGN_INVALID.
+
+ For example, the following fragment can be used to use the cell
+ alignment if one is defined but right-align its contents by default
+ (instead of left-aligning it by default) while still using the default
+ vertical alignment:
+ @code
+ int hAlign = wxALIGN_RIGHT,
+ vAlign = wxALIGN_INVALID;
+ attr.GetNonDefaultAlignment(&hAlign, &vAlign);
+ @endcode
+
+ @since 2.9.1
+ */
+ void GetNonDefaultAlignment(int *hAlign, int *vAlign) const;
+
/**
Returns the cell renderer.
*/
void SetTextColour(const wxColour& colText);
};
+/**
+ Base class for corner window renderer.
+
+ This is the simplest of all header renderers and only has a single
+ function.
+
+ @see wxGridCellAttrProvider::GetCornerRenderer()
+
+ @since 2.9.1
+ */
+class wxGridCornerHeaderRenderer
+{
+public:
+ /**
+ Called by the grid to draw the corner window border.
+
+ This method is responsible for drawing the border inside the given @a
+ rect and adjusting the rectangle size to correspond to the area inside
+ the border, i.e. usually call wxRect::Deflate() to account for the
+ border width.
+
+ @param grid
+ The grid whose corner window is being drawn.
+ @param dc
+ The device context to use for drawing.
+ @param rect
+ Input/output parameter which contains the border rectangle on input
+ and should be updated to contain the area inside the border on
+ function return.
+ */
+ virtual void DrawBorder(const wxGrid& grid,
+ wxDC& dc,
+ wxRect& rect) const = 0;
+};
+/**
+ Common base class for row and column headers renderers.
+
+ @see wxGridColumnHeaderRenderer, wxGridRowHeaderRenderer
+
+ @since 2.9.1
+ */
+class wxGridHeaderLabelsRenderer : public wxGridCornerHeaderRenderer
+{
+public:
+ /**
+ Called by the grid to draw the specified label.
+
+ Notice that the base class DrawBorder() method is called before this
+ one.
+
+ The default implementation uses wxGrid::GetLabelTextColour() and
+ wxGrid::GetLabelFont() to draw the label.
+ */
+ virtual void DrawLabel(const wxGrid& grid,
+ wxDC& dc,
+ const wxString& value,
+ const wxRect& rect,
+ int horizAlign,
+ int vertAlign,
+ int textOrientation) const;
+};
+
+/**
+ Base class for row headers renderer.
+
+ This is the same as wxGridHeaderLabelsRenderer currently but we still use a
+ separate class for it to distinguish it from wxGridColumnHeaderRenderer.
+
+ @see wxGridRowHeaderRendererDefault
+
+ @see wxGridCellAttrProvider::GetRowHeaderRenderer()
+
+ @since 2.9.1
+ */
+class wxGridRowHeaderRenderer : public wxGridHeaderLabelsRenderer
+{
+};
+
+/**
+ Base class for column headers renderer.
+
+ This is the same as wxGridHeaderLabelsRenderer currently but we still use a
+ separate class for it to distinguish it from wxGridRowHeaderRenderer.
+
+ @see wxGridColumnHeaderRendererDefault
+
+ @see wxGridCellAttrProvider::GetColumnHeaderRenderer()
+
+ @since 2.9.1
+ */
+class wxGridColumnHeaderRenderer : public wxGridHeaderLabelsRenderer
+{
+};
+
+/**
+ Default row header renderer.
+
+ You may derive from this class if you need to only override one of its
+ methods (i.e. either DrawLabel() or DrawBorder()) but continue to use the
+ default implementation for the other one.
+
+ @see wxGridColumnHeaderRendererDefault
+
+ @since 2.9.1
+ */
+class wxGridRowHeaderRendererDefault : public wxGridRowHeaderRenderer
+{
+public:
+ /// Implement border drawing for the row labels.
+ virtual void DrawBorder(const wxGrid& grid,
+ wxDC& dc,
+ wxRect& rect) const;
+};
+
+/**
+ Default column header renderer.
+
+ @see wxGridRowHeaderRendererDefault
+
+ @since 2.9.1
+ */
+class wxGridColumnHeaderRendererDefault : public wxGridColumnHeaderRenderer
+{
+public:
+ /// Implement border drawing for the column labels.
+ virtual void DrawBorder(const wxGrid& grid,
+ wxDC& dc,
+ wxRect& rect) const;
+};
+
+/**
+ Default corner window renderer.
+
+ @see wxGridColumnHeaderRendererDefault, wxGridRowHeaderRendererDefault
+
+ @since 2.9.1
+ */
+class wxGridCornerHeaderRendererDefault : public wxGridCornerHeaderRenderer
+{
+public:
+ /// Implement border drawing for the corner window.
+ virtual void DrawBorder(const wxGrid& grid,
+ wxDC& dc,
+ wxRect& rect) const;
+};
+
+/**
+ Class providing attributes to be used for the grid cells.
+
+ This class both defines an interface which grid cell attributes providers
+ should implement -- and which can be implemented differently in derived
+ classes -- and a default implementation of this interface which is often
+ good enough to be used without modification, especially with not very large
+ grids for which the efficiency of attributes storage hardly matters (see
+ the discussion below).
+
+ An object of this class can be associated with a wxGrid using
+ wxGridTableBase::SetAttrProvider() but it's not necessary to call it if you
+ intend to use the default provider as it is used by wxGridTableBase by
+ default anyhow.
+
+ Notice that while attributes provided by this class can be set for
+ individual cells using SetAttr() or the entire rows or columns using
+ SetRowAttr() and SetColAttr() they are always retrieved using GetAttr()
+ function.
+
+
+ The default implementation of this class stores the attributes passed to
+ its SetAttr(), SetRowAttr() and SetColAttr() in a straightforward way. A
+ derived class may use its knowledge about how the attributes are used in
+ your program to implement it much more efficiently: for example, using a
+ special background colour for all even-numbered rows can be implemented by
+ simply returning the same attribute from GetAttr() if the row number is
+ even instead of having to store N/2 row attributes where N is the total
+ number of rows in the grid.
+
+ Notice that objects of this class can't be copied.
+ */
+class wxGridCellAttrProvider : public wxClientDataContainer
+{
+public:
+ /// Trivial default constructor.
+ wxGridCellAttrProvider();
+
+ /// Destructor releases any attributes held by this class.
+ virtual ~wxGridCellAttrProvider();
+
+ /**
+ Get the attribute to use for the specified cell.
+
+ If wxGridCellAttr::Any is used as @a kind value, this function combines
+ the attributes set for this cell using SetAttr() and those for its row
+ or column (set with SetRowAttr() or SetColAttr() respectively), with
+ the cell attribute having the highest precedence.
+
+ Notice that the caller must call DecRef() on the returned pointer if it
+ is non-@NULL.
+
+ @param row
+ The row of the cell.
+ @param col
+ The column of the cell.
+ @param kind
+ The kind of the attribute to return.
+ @return
+ The attribute to use which should be DecRef()'d by caller or @NULL
+ if no attributes are defined for this cell.
+ */
+ virtual wxGridCellAttr *GetAttr(int row, int col,
+ wxGridCellAttr::wxAttrKind kind) const;
+
+ /**
+ Setting attributes.
+
+ All these functions take ownership of the attribute passed to them,
+ i.e. will call DecRef() on it themselves later and so it should not be
+ destroyed by the caller. And the attribute can be @NULL to reset a
+ previously set value.
+ */
+ //@{
+
+ /// Set attribute for the specified cell.
+ virtual void SetAttr(wxGridCellAttr *attr, int row, int col);
+
+ /// Set attribute for the specified row.
+ virtual void SetRowAttr(wxGridCellAttr *attr, int row);
+
+ /// Set attribute for the specified column.
+ virtual void SetColAttr(wxGridCellAttr *attr, int col);
+
+ //@}
+
+ /**
+ Getting header renderers.
+
+ These functions return the renderers for the given row or column header
+ label and the corner window. Unlike cell attributes, these objects are
+ not reference counted and are never @NULL so they are returned by
+ reference and not pointer and DecRef() shouldn't (and can't) be called
+ for them.
+
+ All these functions were added in wxWidgets 2.9.1.
+ */
+ //@{
+
+ /**
+ Return the renderer used for drawing column headers.
+
+ By default wxGridColumnHeaderRendererDefault is returned.
+
+ @see wxGrid::SetUseNativeColLabels(), wxGrid::UseNativeColHeader()
+
+ @since 2.9.1
+ */
+ virtual const wxGridColumnHeaderRenderer& GetColumnHeaderRenderer(int col);
+
+ /**
+ Return the renderer used for drawing row headers.
+
+ By default wxGridRowHeaderRendererDefault is returned.
+
+ @since 2.9.1
+ */
+ virtual const wxGridRowHeaderRenderer& GetRowHeaderRenderer(int row);
+
+ /**
+ Return the renderer used for drawing the corner window.
+
+ By default wxGridCornerHeaderRendererDefault is returned.
+
+ @since 2.9.1
+ */
+ virtual const wxGridCornerHeaderRenderer& GetCornerRenderer();
+
+ //@}
+};
/**
wxGridSelectColumns
};
+ /**
+ Return values for GetCellSize().
+
+ @since 2.9.1
+ */
+ enum CellSpan
+ {
+ /// This cell is inside a span covered by another cell.
+ CellSpan_Inside = -1,
+
+ /// This is a normal, non-spanning cell.
+ CellSpan_None = 0,
+
+ /// This cell spans several physical wxGrid cells.
+ CellSpan_Main
+ };
/**
@name Constructors and Initialization
*/
void SetRowSizes(const wxGridSizesInfo& sizeInfo);
+ /**
+ Set the size of the cell.
+
+ Specifying a value of more than 1 in @a num_rows or @a num_cols will
+ make the cell at (@a row, @a col) span the block of the specified size,
+ covering the other cells which would be normally shown in it. Passing 1
+ for both arguments resets the cell to normal appearance.
+
+ @see GetCellSize()
+
+ @param row
+ The row of the cell.
+ @param col
+ The column of the cell.
+ @param num_rows
+ Number of rows to be occupied by this cell, must be >= 1.
+ @param num_cols
+ Number of columns to be occupied by this cell, must be >= 1.
+ */
+ void SetCellSize(int row, int col, int num_rows, int num_cols);
+
+ /**
+ Get the size of the cell in number of cells covered by it.
+
+ For normal cells, the function fills both @a num_rows and @a num_cols
+ with 1 and returns CellSpan_None. For cells which span multiple cells, i.e.
+ for which SetCellSize() had been called, the returned values are the
+ same ones as were passed to SetCellSize() call and the function return
+ value is CellSpan_Main.
+
+ More unexpectedly, perhaps, the returned values may be @em negative for
+ the cells which are inside a span covered by a cell occupying multiple
+ rows or columns. They correspond to the offset of the main cell of the
+ span from the cell passed to this functions and the function returns
+ CellSpan_Inside value to indicate this.
+
+ As an example, consider a 3*3 grid with the cell (1, 1) (the one in the
+ middle) having a span of 2 rows and 2 columns, i.e. the grid looks like
+ @code
+ +----+----+----+
+ | | | |
+ +----+----+----+
+ | | |
+ +----+ |
+ | | |
+ +----+----+----+
+ @endcode
+ Then the function returns 2 and 2 in @a num_rows and @a num_cols for
+ the cell (1, 1) itself and -1 and -1 for the cell (2, 2) as well as -1
+ and 0 for the cell (2, 1).
+
+ @param row
+ The row of the cell.
+ @param col
+ The column of the cell.
+ @param num_rows
+ Pointer to variable receiving the number of rows, must not be @NULL.
+ @param num_cols
+ Pointer to variable receiving the number of columns, must not be
+ @NULL.
+ @return
+ The kind of this cell span (the return value is new in wxWidgets
+ 2.9.1, this function was void in previous wxWidgets versions).
+ */
+ CellSpan GetCellSize( int row, int col, int *num_rows, int *num_cols ) const;
+
+ /**
+ Get the number of rows and columns allocated for this cell.
+
+ This overload doesn't return a CellSpan value but the values returned
+ may still be negative, see GetCellSize(int, int, int *, int *) for
+ details.
+ */
+ wxSize GetCellSize(const wxGridCellCoords& coords);
+
//@}
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