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/*************************************************************************
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2009 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
************************************************************************/
#ifndef SVTOOLS_INC_TABLE_TABLERENDERER_HXX
#define SVTOOLS_INC_TABLE_TABLERENDERER_HXX
#include <svtools/table/tabletypes.hxx>
#include <vcl/outdev.hxx>
#include <boost/shared_ptr.hpp>
//........................................................................
namespace svt { namespace table
{
//........................................................................
//====================================================================
//= ITableRenderer
//====================================================================
/** interface to implement by components rendering a ->TableControl
*/
class SAL_NO_VTABLE ITableRenderer
{
public:
/** paints a (part of) header area
There are two header areas in a table control:
<ul><li>The row containing all column headers, i.e. <em>above</em> all rows containing the data</li>
<li>The column containing all row headers. i.e. <em>left of</em> all columns containing the data</li>
</ul>
A header area is more than the union of the single column/row headers.
First, there might be less columns than fit into the view - in this case, right
beside the right-most column, there's still room which belongs to the column header
area, but is not occupied by any particular column header.<br/>
An equivalent statement holds for the row header area, if there are less rows than
fit into the view.
Second, if the table control has both a row header and a column header,
the intersection between those both belongs to both the column header area and the
row header area, but not to any particular column or row header.
There are two flags specifying whether the to-be-painted area is part of the column
and/or row header area.
<ul><li>If both are <TRUE/>, the intersection of both areas is to be painted.</li>
<li>If ->_bIsColHeaderArea is <TRUE/> and ->_bIsRowHeaderArea is <FALSE/>,
then ->_rArea denotes the column header area <em>excluding</em> the
intersection between row and column header area.</li>
<li>Equivalently for ->_bIsColHeaderArea being <FALSE/> and ->_bIsRowHeaderArea
being <TRUE/></li>
</ul>
Note that it's not possible for both ->_bIsColHeaderArea and ->_bIsRowHeaderArea
to be <FALSE/> at the same time.
@param _rDevice
the device to paint onto
@param _rArea
the area to paint into
@param _bIsColHeaderArea
<TRUE/> if and only if ->_rArea is part of the column header area.
@param _bIsRowHeaderArea
<TRUE/> if and only if ->_rArea is part of the row header area.
@param _rStyle
the style to be used for drawing
*/
virtual void PaintHeaderArea(
OutputDevice& _rDevice, const Rectangle& _rArea,
bool _bIsColHeaderArea, bool _bIsRowHeaderArea,
const StyleSettings& _rStyle ) = 0;
/** paints the header for a given column
@param _nCol
the index of the column to paint
@param _bActive
<TRUE/> if and only if the column whose column is to be painted
contains the active cell.
@param _bSelected
<TRUE/> if and only if the column whose column is to be painted
is selected currently.
@param _rDevice
denotes the device to paint onto
@param _rArea
the are into which the column header should be painted
@param _rStyle
the style to be used for drawing
*/
virtual void PaintColumnHeader( ColPos _nCol, bool _bActive, bool _bSelected,
OutputDevice& _rDevice, const Rectangle& _rArea,
const StyleSettings& _rStyle ) = 0;
/** prepares a row for painting
Painting a table means painting rows as necessary, in an increasing
order. The assumption is that retrieving data for two different rows
is (potentially) more expensive than retrieving data for two different
columns. Thus, the renderer will get the chance to "seek" to a certain
row, and then has to render all cells in this row, before another
row is going to be painted.
@param _nRow
the row which is going to be painted. The renderer should
at least remember this row, since subsequent calls to
->PaintRowHeader(), ->PaintCell(), and ->FinishRow() will
not pass this parameter again.
However, the renderer is also allowed to render any
cell-independent content of this row.
@param _bActive
<TRUE/> if and only if the row to be painted contains the
currently active cell.
@param _bSelected
<TRUE/> if and only if the row to be prepared is
selected currently.
@param _rDevice
denotes the device to paint onto
@param _rRowArea
the are into which the row should be painted. This excludes
the row header area, if applicable.
@param _rStyle
the style to be used for drawing
*/
virtual void PrepareRow( RowPos _nRow, bool _bActive, bool _bSelected,
OutputDevice& _rDevice, const Rectangle& _rRowArea,
const StyleSettings& _rStyle ) = 0;
/** paints the header of a row
The row to be painted is denoted by the most recent call to
->PrepareRow.
@param _bActive
<TRUE/> if and only if the row to be painted contains the
currently active cell.
<br/>
Note that this flag is equal to the respective flag in the
previous ->PrepareRow call, it's passed here for convinience
only.
@param _bSelected
<TRUE/> if and only if the row whose header cell is to be
painted is selected currently.
<br/>
Note that this flag is equal to the respective flag in the
previous ->PrepareRow call, it's passed here for convinience
only.
@param _rDevice
denotes the device to paint onto
@param _rArea
the are into which the row header should be painted
@param _rStyle
the style to be used for drawing
@param _rText
the title of the header row
*/
virtual void PaintRowHeader(
bool _bActive, bool _bSelected,
OutputDevice& _rDevice, const Rectangle& _rArea,
const StyleSettings& _rStyle, rtl::OUString& _rText ) = 0;
/** paints a certain cell
The row to be painted is denoted by the most recent call to
->PrepareRow.
@param _bSelected
<TRUE/> if and only if the cell to be painted is
selected currently. This is the case if either
the row or the column of the cell is currently selected.
<br/>
Note that this flag is equal to the respective flag in the
previous ->PrepareRow call, it's passed here for convinience
only.
@param _bActive
<TRUE/> if the cell is currently active.
<br/>
Note that this flag is equal to the respective flag in the
previous ->PrepareRow call, it's passed here for convinience
only.
@param _rDevice
denotes the device to paint onto
@param _rArea
the are into which the cell should be painted
@param _rStyle
the style to be used for drawing
@param _rText
the content of the cell
*/
virtual void PaintCell( ColPos _nColumn,
bool _bActive, bool _bSelected,
OutputDevice& _rDevice, const Rectangle& _rArea,
const StyleSettings& _rStyle, rtl::OUString& _rText ) = 0;
/** draws a cell cursor in the given rectangle
The cell cursor is used to indicate the active/current cell
of a table control.
*/
virtual void ShowCellCursor( Window& _rView, const Rectangle& _rCursorRect) = 0;
/** hides the cell cursor previously drawn into the given rectangle
The cell cursor is used to indicate the active/current cell
of a table control.
*/
virtual void HideCellCursor( Window& _rView, const Rectangle& _rCursorRect) = 0;
/// deletes the renderer instance
virtual ~ITableRenderer() { }
};
typedef ::boost::shared_ptr< ITableRenderer > PTableRenderer;
//........................................................................
} } // namespace svt::table
//........................................................................
#endif // SVTOOLS_INC_TABLE_TABLERENDERER_HXX
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