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/* This file is part of the KDE project
Copyright 2006,2007 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_STYLE_STORAGE
#define CALLIGRA_SHEETS_STYLE_STORAGE
#include <QObject>
#include <QPair>
#include <QPoint>
#include <QRect>
#include "sheets_odf_export.h"
#include <Region.h>
#include <Style.h>
namespace Calligra
{
namespace Sheets
{
class Map;
class Style;
class StyleManager;
class SubStyle;
class StyleStorageLoaderJob;
/**
* \ingroup Storage
* \ingroup Style
* The style storage.
* Acts mainly as a wrapper around the R-Tree data structure to allow a future
* replacement of this backend. Decorated with some additional features like
* garbage collection, caching, used area tracking, etc.
*/
class CALLIGRA_SHEETS_ODF_EXPORT StyleStorage : public QObject
{
Q_OBJECT
public:
explicit StyleStorage(Map* map);
StyleStorage(const StyleStorage& other);
~StyleStorage() override;
/**
* Composes the style for \p point. All substyles intersecting \p point are considered.
* \return the Style at the position \p point .
*/
Style contains(const QPoint& point) const;
/**
* Composes the style for \p rect. Only substyles which fill out \p rect completely are
* considered. In contrast to intersects(const QRect&).
* Especially useful on saving cell styles assigned to columns or rows.
* \return the Style for the area \p rect .
* \see intersects
*/
Style contains(const QRect& rect) const;
/**
* Composes the style for \p rect. All substyles which intersect \p rect are considered.
* In contrast to contains(const QRect&).
* \return the Style for the area \p rect .
* \see contains
*/
Style intersects(const QRect& rect) const;
/**
* Collects all substyle/range pairs, that intersect \p rect. With this data one can
* reconstruct the former state of the storage after modification.
* \return all substyle/range pairs intersecting \p rect
*/
QList< QPair<QRectF, SharedSubStyle> > undoData(const Region& rect) const;
/**
* Returns the area, which got a style attached.
* \return the area using styles
*/
QRect usedArea() const;
/**
* \return the OpenDocument column/row default cell styles
* \ingroup OpenDocument
*/
void saveCreateDefaultStyles(int& maxCols, int& maxRows, QMap<int, Style> &columnDefaultStyles, QMap<int, Style> &rowDefaultStyles) const;
/**
* Returns the index of the next column-wide cell style after \p column or zero
* if there's none.
* \return the index of the next styled column
*/
int nextColumnStyleIndex(int column) const;
/**
* Returns the index of the next row-wide cell style after \p row or zero
* if there's none.
* \return the index of the next styled row
*/
int nextRowStyleIndex(int row) const;
/**
* Returns the index of the first cell style in \p row or zero
* if there's none.
* \return the index of the next styled column
*/
int firstColumnIndexInRow(int row) const;
/**
* Returns the index of the next cell style in \p row after \p column or zero
* if there's none.
* \return the index of the next styled column
*/
int nextColumnIndexInRow(int column, int row) const;
/**
* Assigns \p subStyle to the area \p rect .
*/
void insert(const QRect& rect, const SharedSubStyle& subStyle, bool markRegionChanged = true);
/**
* Assigns the substyles contained in \p style to the area \p region .
*/
void insert(const Region& region, const Style& style);
/**
* Replaces the current styles with those in \p styles
*/
void load(const QList<QPair<QRegion, Style> >& styles);
/**
* Inserts \p number rows at the position \p position .
* It extends or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > insertRows(int position, int number = 1);
/**
* Inserts \p number columns at the position \p position .
* It extends or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > insertColumns(int position, int number = 1);
/**
* Deletes \p number rows at the position \p position .
* It shrinks or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > removeRows(int position, int number = 1);
/**
* Deletes \p number columns at the position \p position .
* It shrinks or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > removeColumns(int position, int number = 1);
/**
* Shifts the rows right of \p rect to the right by the width of \p rect .
* It extends or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > insertShiftRight(const QRect& rect);
/**
* Shifts the columns at the bottom of \p rect to the bottom by the height of \p rect .
* It extends or shifts rectangles, respectively.
*/
QList< QPair<QRectF, SharedSubStyle> > insertShiftDown(const QRect& rect);
/**
* Shifts the rows left of \p rect to the left by the width of \p rect .
* It shrinks or shifts rectangles, respectively.
* \return the former rectangle/data pairs
*/
QList< QPair<QRectF, SharedSubStyle> > removeShiftLeft(const QRect& rect);
/**
* Shifts the columns on top of \p rect to the top by the height of \p rect .
* It shrinks or shifts rectangles, respectively.
* \return the former rectangle/data pairs
*/
QList< QPair<QRectF, SharedSubStyle> > removeShiftUp(const QRect& rect);
/**
* Invalidates all cached styles.
*/
void invalidateCache();
protected Q_SLOTS:
void garbageCollection();
protected:
/**
* Triggers all necessary actions after a change of \p rect .
* Calls invalidateCache() and adds the substyles in
* \p rect to the list of possible garbage.
*/
void regionChanged(const QRect& rect);
/**
* Invalidates all cached styles lying in \p rect .
*/
void invalidateCache(const QRect& rect);
/**
* Composes a style of \p substyles .
* \return the composed style
*/
Style composeStyle(const QList<SharedSubStyle>& subStyles) const;
/**
* Convenience method.
* \return the StyleManager
*/
StyleManager* styleManager() const;
private:
friend class StyleStorageLoaderJob;
// disable assignment
void operator=(const StyleStorage& other);
class Private;
Private * const d;
};
} // namespace Sheets
} // namespace Calligra
#endif // CALLIGRA_SHEETS_STYLE_STORAGE
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