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q3grid.cpp

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt3Support module of the Qt Toolkit.
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** License version 2.0 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 GNU
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****************************************************************************/

#include "q3grid.h"
#include "qlayout.h"
#include "qapplication.h"

/*!
    \class Q3Grid qgrid.h
    \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.

    \img qgrid-m.png Q3Grid

    \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.
*/
00060 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.
 */
00082 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.
*/

00093 void Q3Grid::setSpacing(int space)
{
    if (layout())
        layout()->setSpacing(space);
}


/*!\reimp
 */
00102 void Q3Grid::frameChanged()
{
    if (layout())
        layout()->setMargin(frameWidth());
}


/*!
  \reimp
*/

00113 QSize Q3Grid::sizeHint() const
{
    QWidget *mThis = (QWidget*)this;
    QApplication::sendPostedEvents(mThis, QEvent::ChildInserted);
    return Q3Frame::sizeHint();
}

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