/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
** License if such license has been publicly approved by Trolltech ASA
** (or its successors, if any) and the KDE Free Qt Foundation. 
**
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** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
** you are unsure which license is appropriate for your use, please
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/

#ifndef QGRIDLAYOUT_H
#define QGRIDLAYOUT_H

#include <QtGui/qlayout.h>
#ifdef QT_INCLUDE_COMPAT
#include <QtGui/qwidget.h>
#endif

#include <limits.h>

QT_BEGIN_HEADER

QT_MODULE(Gui)

class QGridLayoutPrivate;

class Q_GUI_EXPORT QGridLayout : public QLayout
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QGridLayout)
    QDOC_PROPERTY(int horizontalSpacing READ horizontalSpacing WRITE setHorizontalSpacing)
    QDOC_PROPERTY(int verticalSpacing READ verticalSpacing WRITE setVerticalSpacing)

public:
    explicit QGridLayout(QWidget *parent);
    QGridLayout();

#ifdef QT3_SUPPORT
    QT3_SUPPORT_CONSTRUCTOR QGridLayout(QWidget *parent, int nRows, int nCols = 1, int border = 0,
                                      int spacing = -1, const char *name = 0);
    QT3_SUPPORT_CONSTRUCTOR QGridLayout(int nRows, int nCols = 1, int spacing = -1, const char *name = 0);
    QT3_SUPPORT_CONSTRUCTOR QGridLayout(QLayout *parentLayout, int nRows =1, int nCols = 1, int spacing = -1,
                                      const char *name = 0);
#endif
    ~QGridLayout();

    QSize sizeHint() const;
    QSize minimumSize() const;
    QSize maximumSize() const;

    void setHorizontalSpacing(int spacing);
    int horizontalSpacing() const;
    void setVerticalSpacing(int spacing);
    int verticalSpacing() const;
    void setSpacing(int spacing);
    int spacing() const;

    void setRowStretch(int row, int stretch);
    void setColumnStretch(int column, int stretch);
    int rowStretch(int row) const;
    int columnStretch(int column) const;

    void setRowMinimumHeight(int row, int minSize);
    void setColumnMinimumWidth(int column, int minSize);
    int rowMinimumHeight(int row) const;
    int columnMinimumWidth(int column) const;

    int columnCount() const;
    int rowCount() const;

    QRect cellRect(int row, int column) const;
#ifdef QT3_SUPPORT
    inline QT3_SUPPORT QRect cellGeometry(int row, int column) const {return cellRect(row, column);}
#endif

    bool hasHeightForWidth() const;
    int heightForWidth(int) const;
    int minimumHeightForWidth(int) const;

    Qt::Orientations expandingDirections() const;
    void invalidate();

    inline void addWidget(QWidget *w) { QLayout::addWidget(w); }
    void addWidget(QWidget *, int row, int column, Qt::Alignment = 0);
    void addWidget(QWidget *, int row, int column, int rowSpan, int columnSpan, Qt::Alignment = 0);
    void addLayout(QLayout *, int row, int column, Qt::Alignment = 0);
    void addLayout(QLayout *, int row, int column, int rowSpan, int columnSpan, Qt::Alignment = 0);

    void setOriginCorner(Qt::Corner);
    Qt::Corner originCorner() const;

#ifdef QT3_SUPPORT
    inline QT3_SUPPORT void setOrigin(Qt::Corner corner) { setOriginCorner(corner); }
    inline QT3_SUPPORT Qt::Corner origin() const { return originCorner(); }
#endif
    QLayoutItem *itemAt(int) const;
    QLayoutItem *takeAt(int);
    int count() const;
    void setGeometry(const QRect&);

    void addItem(QLayoutItem *item, int row, int column, int rowSpan = 1, int columnSpan = 1, Qt::Alignment = 0);

    void setDefaultPositioning(int n, Qt::Orientation orient);
    void getItemPosition(int idx, int *row, int *column, int *rowSpan, int *columnSpan);

protected:
#ifdef QT3_SUPPORT
    QT3_SUPPORT bool findWidget(QWidget* w, int *r, int *c);
#endif
    void addItem(QLayoutItem *);

private:
    Q_DISABLE_COPY(QGridLayout)

#ifdef QT3_SUPPORT
public:
    QT3_SUPPORT void expand(int rows, int cols);
    inline QT3_SUPPORT void addRowSpacing(int row, int minsize) { addItem(new QSpacerItem(0,minsize), row, 0); }
    inline QT3_SUPPORT void addColSpacing(int col, int minsize) { addItem(new QSpacerItem(minsize,0), 0, col); }
    inline QT3_SUPPORT void addMultiCellWidget(QWidget *w, int fromRow, int toRow, int fromCol, int toCol, Qt::Alignment _align = 0)
        { addWidget(w, fromRow, fromCol, (toRow < 0) ? -1 : toRow - fromRow + 1, (toCol < 0) ? -1 : toCol - fromCol + 1, _align); }
    inline QT3_SUPPORT void addMultiCell(QLayoutItem *l, int fromRow, int toRow, int fromCol, int toCol, Qt::Alignment _align = 0)
        { addItem(l, fromRow, fromCol, (toRow < 0) ? -1 : toRow - fromRow + 1, (toCol < 0) ? -1 : toCol - fromCol + 1, _align); }
    inline QT3_SUPPORT void addMultiCellLayout(QLayout *layout, int fromRow, int toRow, int fromCol, int toCol, Qt::Alignment _align = 0)
        { addLayout(layout, fromRow, fromCol, (toRow < 0) ? -1 : toRow - fromRow + 1, (toCol < 0) ? -1 : toCol - fromCol + 1, _align); }

    inline QT3_SUPPORT int numRows() const { return rowCount(); }
    inline QT3_SUPPORT int numCols() const { return columnCount(); }
    inline QT3_SUPPORT void setColStretch(int col, int stretch) {setColumnStretch(col, stretch); }
    inline QT3_SUPPORT int colStretch(int col) const {return columnStretch(col); }
    inline QT3_SUPPORT void setColSpacing(int col, int minSize) { setColumnMinimumWidth(col, minSize); }
    inline QT3_SUPPORT int colSpacing(int col) const { return columnMinimumWidth(col); }
    inline QT3_SUPPORT void setRowSpacing(int row, int minSize) {setRowMinimumHeight(row, minSize); }
    inline QT3_SUPPORT int rowSpacing(int row) const {return rowMinimumHeight(row); }
#endif
};

QT_END_HEADER

#endif // QGRIDLAYOUT_H
