/****************************************************************************
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtGui module of the Qt Toolkit.
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QTABLEVIEW_P_H
#define QTABLEVIEW_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "private/qabstractitemview_p.h"

#ifndef QT_NO_TABLEVIEW

QT_BEGIN_NAMESPACE

class QTableViewPrivate : public QAbstractItemViewPrivate
{
    Q_DECLARE_PUBLIC(QTableView)
public:
    QTableViewPrivate()
        : showGrid(true), gridStyle(Qt::SolidLine),
          rowSectionAnchor(-1), columnSectionAnchor(-1),
          columnResizeTimerID(0), rowResizeTimerID(0),
          horizontalHeader(0), verticalHeader(0),
          sortingEnabled(false), geometryRecursionBlock(false)
 {
    wrapItemText = true;
#ifndef QT_NO_DRAGANDDROP
    overwrite = true;
#endif
 }
    void init();
    void trimHiddenSelections(QItemSelectionRange *range) const;

    inline bool isHidden(int row, int col) const {
        return verticalHeader->isSectionHidden(row)
            || horizontalHeader->isSectionHidden(col);
    }
    inline int visualRow(int logicalRow) const {
        return verticalHeader->visualIndex(logicalRow);
    }
    inline int visualColumn(int logicalCol) const {
        return horizontalHeader->visualIndex(logicalCol);
    }
    inline int logicalRow(int visualRow) const {
        return verticalHeader->logicalIndex(visualRow);
    }
    inline int logicalColumn(int visualCol) const {
        return horizontalHeader->logicalIndex(visualCol);
    }

    int sectionSpanEndLogical(const QHeaderView *header, int logical, int span) const;
    int sectionSpanSize(const QHeaderView *header, int logical, int span) const;
    bool spanContainsSection(const QHeaderView *header, int logical, int spanLogical, int span) const;
    bool spansIntersectColumn(int column) const;
    bool spansIntersectRow(int row) const;
    bool spansIntersectColumns(const QList<int> &columns) const;
    bool spansIntersectRows(const QList<int> &rows) const;
    void drawAndClipSpans(const QRect &area, QPainter *painter,
                          const QStyleOptionViewItemV4 &option, QBitArray *drawn,
                          int firstVisualRow, int lastVisualRow, int firstVisualColumn, int lastVisualColumn);
    void drawCell(QPainter *painter, const QStyleOptionViewItemV4 &option, const QModelIndex &index);

    bool showGrid;
    Qt::PenStyle gridStyle;
    int rowSectionAnchor;
    int columnSectionAnchor;
    int columnResizeTimerID;
    int rowResizeTimerID;
    QList<int> columnsToUpdate;
    QList<int> rowsToUpdate;
    QHeaderView *horizontalHeader;
    QHeaderView *verticalHeader;
    QWidget *cornerWidget;
    bool sortingEnabled;
    bool geometryRecursionBlock;

    struct Span
    {
        int m_top;
        int m_left;
        int m_bottom;
        int m_right;
        Span()
            : m_top(-1), m_left(-1), m_bottom(-1), m_right(-1) { }
        Span(int row, int column, int rowCount, int columnCount)
            : m_top(row), m_left(column), m_bottom(row+rowCount-1), m_right(column+columnCount-1) { }
        inline int top() const { return m_top; }
        inline int left() const { return m_left; }
        inline int bottom() const { return m_bottom; }
        inline int right() const { return m_right; }
        inline int height() const { return m_bottom - m_top + 1; }
        inline int width() const { return m_right - m_left + 1; }
    };
    QList<Span> spans;

    void setSpan(int row, int column, int rowSpan, int columnSpan);
    Span span(int row, int column) const;
    inline int rowSpan(int row, int column) const {
        return span(row, column).height();
    }
    inline int columnSpan(int row, int column) const {
        return span(row, column).width();
    }
    inline bool hasSpans() const {
        return !spans.isEmpty();
    }
    inline bool spanContainsRow(int row, int spanRow, int span) const {
        return spanContainsSection(verticalHeader, row, spanRow, span);
    }
    inline bool spanContainsColumn(int column, int spanColumn, int span) const {
        return spanContainsSection(horizontalHeader, column, spanColumn, span);
    }
    inline bool isInSpan(int row, int column, const Span &span) const {
        return spanContainsRow(row, span.top(), span.height())
            && spanContainsColumn(column, span.left(), span.width());
    }
    inline int rowSpanHeight(int row, int span) const {
        return sectionSpanSize(verticalHeader, row, span);
    }
    inline int columnSpanWidth(int column, int span) const {
        return sectionSpanSize(horizontalHeader, column, span);
    }
    inline int rowSpanEndLogical(int row, int span) const {
        return sectionSpanEndLogical(verticalHeader, row, span);
    }
    inline int columnSpanEndLogical(int column, int span) const {
        return sectionSpanEndLogical(horizontalHeader, column, span);
    }

    inline bool isRowHidden(int row) const {
        return verticalHeader->isSectionHidden(row);
    }
    inline bool isColumnHidden(int column) const {
        return horizontalHeader->isSectionHidden(column);
    }
    inline bool isCellEnabled(int row, int column) const {
        return isIndexEnabled(model->index(row, column, root));
    }
    inline bool isVisualRowHiddenOrDisabled(int row, int column) const {
        int r = logicalRow(row);
        int c = logicalColumn(column);
        return isRowHidden(r) || !isCellEnabled(r, c);
    }
    inline bool isVisualColumnHiddenOrDisabled(int row, int column) const {
        int r = logicalRow(row);
        int c = logicalColumn(column);
        return isColumnHidden(c) || !isCellEnabled(r, c);
    }

    QRect visualSpanRect(const Span &span) const;

    void _q_selectRow(int row);
    void _q_selectColumn(int column);

    void selectRow(int row, bool anchor);
    void selectColumn(int column, bool anchor);
};

QT_END_NAMESPACE

#endif // QT_NO_TABLEVIEW

#endif // QTABLEVIEW_P_H