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/* This file is part of the KDE project
Copyright 2006 Stefan Nikolaus <stefan.nikolaus@kdemail.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef CALLIGRA_SHEETS_SHEET_VIEW
#define CALLIGRA_SHEETS_SHEET_VIEW
#include <QObject>
#include <QPoint>
#include <QPointF>
#include <QRect>
#include "calligra_sheets_export.h"
class QPainter;
class QRect;
class QRectF;
class QSize;
class QSizeF;
class QColor;
class KoViewConverter;
namespace Calligra
{
namespace Sheets
{
class CellView;
class Region;
class Sheet;
class CanvasBase;
/**
* \ingroup Painting
* The SheetView controls the painting of the sheets' cells.
* It caches a set of CellViews.
*/
class CALLIGRA_SHEETS_COMMON_EXPORT SheetView : public QObject
{
Q_OBJECT
friend class CellView;
public:
/**
* Constructor.
*/
explicit SheetView(const Sheet* sheet);
/**
* Destructor.
*/
~SheetView();
/**
* \return the Sheet
*/
const Sheet* sheet() const;
/**
* Sets the KoViewConverter used by this SheetView.
*/
void setViewConverter(const KoViewConverter* viewConverter);
/**
* \return the view in which the Sheet is painted
*/
const KoViewConverter* viewConverter() const;
/**
* Looks up a CellView for the position \p col , \p row in the cache.
* If no CellView exists yet, one is created and inserted into the cache.
*
* \return the CellView for the position
*/
#ifdef CALLIGRA_SHEETS_MT
CellView cellView(int col, int row);
CellView cellView(const QPoint& pos);
#else
const CellView& cellView(int col, int row);
const CellView& cellView(const QPoint& pos);
#endif
/**
* Set the cell range, that should be painted to \p rect .
* It also adjusts the cache size linear to the size of \p rect .
*/
void setPaintCellRange(const QRect& rect);
/**
* Invalidates all cached CellViews in \p region .
*/
void invalidateRegion(const Region& region);
/**
* Invalidates all CellViews, the cached and the default.
*/
virtual void invalidate();
/**
* Paints the cells.
*/
virtual void paintCells(QPainter& painter, const QRectF& paintRect, const QPointF& topLeft, CanvasBase* canvas = 0, const QRect& visibleRect = QRect());
QPoint obscuringCell(const QPoint& obscuredCell) const;
QSize obscuredRange(const QPoint& obscuringCell) const;
QRect obscuredArea(const QPoint& cell) const;
bool isObscured(const QPoint& cell) const;
bool obscuresCells(const QPoint& cell) const;
QSize totalObscuredRange() const;
/*
* Highlighting cells.
*/
bool isHighlighted(const QPoint& cell) const;
void setHighlighted(const QPoint& cell, bool isHighlighted);
bool hasHighlightedCells() const;
void clearHighlightedCells();
QPoint activeHighlight() const;
void setActiveHighlight(const QPoint& cell);
void setHighlightMaskColor(const QColor& color);
void setHighlightColor(const QColor& color);
void setActiveHighlightColor(const QColor& color);
public Q_SLOTS:
void updateAccessedCellRange(const QPoint& location = QPoint());
Q_SIGNALS:
void visibleSizeChanged(const QSizeF&);
void obscuredRangeChanged(const QSize&);
protected:
virtual CellView* createDefaultCellView();
virtual CellView* createCellView(int col, int row);
QRect paintCellRange() const;
protected:
/**
* Helper method for invalidateRegion().
* Invalidates all cached CellViews in \p range .
* \internal
*/
virtual void invalidateRange(const QRect& range);
/**
* Marks other CellViews in \p range as obscured by the CellView at \p position .
* Used by CellView.
*/
void obscureCells(const QPoint& position, int numXCells, int numYCells);
/**
* Returns the default CellView.
* Used by CellView.
*/
#ifdef CALLIGRA_SHEETS_MT
CellView defaultCellView() const;
#else
const CellView& defaultCellView() const;
#endif
private:
Q_DISABLE_COPY(SheetView)
class Private;
Private * const d;
};
} // namespace Sheets
} // namespace Calligra
#endif // CALLIGRA_SHEETS_SHEET_VIEW
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