/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt3Support module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "q3grid.h"
#include "qlayout.h"
#include "qapplication.h"

QT_BEGIN_NAMESPACE

/*!
    \class Q3Grid
    \brief The Q3Grid widget provides simple geometry management of its children.

    \compat

    The grid places its widgets either in columns or in rows depending
    on its orientation.

    The number of rows \e or columns is defined in the constructor.
    All the grid's children will be placed and sized in accordance
    with their sizeHint() and sizePolicy().

    Use setMargin() to add space around the grid itself, and
    setSpacing() to add space between the widgets.

    \sa Q3VBox Q3HBox QGridLayout
*/

/*!
    \typedef Q3Grid::Direction
    \internal
*/

/*!
    Constructs a grid widget with parent \a parent, called \a name.
    If \a orient is \c Horizontal, \a n specifies the number of
    columns. If \a orient is \c Vertical, \a n specifies the number of
    rows. The widget flags \a f are passed to the Q3Frame constructor.
*/
Q3Grid::Q3Grid(int n, Qt::Orientation orient, QWidget *parent, const char *name,
               Qt::WindowFlags f)
    : Q3Frame(parent, name, f)
{
    int nCols, nRows;
    if (orient == Qt::Horizontal) {
        nCols = n;
        nRows = -1;
    } else {
        nCols = -1;
        nRows = n;
    }
    (new QGridLayout(this, nRows, nCols, 0, 0, name))->setAutoAdd(true);
}



/*!
    Constructs a grid widget with parent \a parent, called \a name.
    \a n specifies the number of columns. The widget flags \a f are
    passed to the Q3Frame constructor.
 */
Q3Grid::Q3Grid(int n, QWidget *parent, const char *name, Qt::WindowFlags f)
    : Q3Frame(parent, name, f)
{
    (new QGridLayout(this, -1, n, 0, 0, name))->setAutoAdd(true);
}


/*!
    Sets the spacing between the child widgets to \a space.
*/

void Q3Grid::setSpacing(int space)
{
    if (layout())
        layout()->setSpacing(space);
}


/*!\reimp
 */
void Q3Grid::frameChanged()
{
    if (layout())
        layout()->setMargin(frameWidth());
}


/*!
  \reimp
*/

QSize Q3Grid::sizeHint() const
{
    QWidget *mThis = (QWidget*)this;
    QApplication::sendPostedEvents(mThis, QEvent::ChildInserted);
    return Q3Frame::sizeHint();
}

QT_END_NAMESPACE