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#include "q3hbox.h"

#include "qlayout.h"

#include "qapplication.h"

QT_BEGIN_NAMESPACE

/*!

    \class Q3HBox

    \brief The Q3HBox widget provides horizontal geometry management

    for its child widgets.

    \compat

    All the horizontal box's child widgets will be placed alongside

    each other and sized according to their sizeHint()s.

    Use setMargin() to add space around the edges, and use

    setSpacing() to add space between the widgets. Use

    setStretchFactor() if you want the widgets to be different sizes

    in proportion to one another. (See \link layout.html

    Layouts\endlink for more information on stretch factors.)

    \img qhbox-m.png Q3HBox

    \sa QHBoxLayout Q3VBox Q3Grid

*/

/*!

    Constructs an hbox widget with parent \a parent, called \a name.

    The parent, name and widget flags, \a f, are passed to the Q3Frame

    constructor.

*/

Q3HBox::Q3HBox(QWidget *parent, const char *name, Qt::WindowFlags f)

    :Q3Frame(parent, name, f)

{

    (new QHBoxLayout(this, frameWidth(), frameWidth(), name))->setAutoAdd(true);

}

/*!

    Constructs a horizontal hbox if \a horizontal is TRUE, otherwise

    constructs a vertical hbox (also known as a vbox).

    This constructor is provided for the QVBox class. You should never

    need to use it directly.

    The \a parent, \a name and widget flags, \a f, are passed to the

    Q3Frame constructor.

*/

Q3HBox::Q3HBox(bool horizontal, QWidget *parent , const char *name, Qt::WindowFlags f)

    :Q3Frame(parent, name, f)

{

    (new QBoxLayout(this, horizontal ? QBoxLayout::LeftToRight : QBoxLayout::Down,

                     frameWidth(), frameWidth(), name))->setAutoAdd(true);

}

/*!\reimp

 */

void Q3HBox::frameChanged()

{

    if (layout())

        layout()->setMargin(frameWidth());

}

/*!

    Sets the spacing between the child widgets to \a space.

*/

void Q3HBox::setSpacing(int space)

{

    if (layout())

        layout()->setSpacing(space);

}

/*!

  \reimp

*/

QSize Q3HBox::sizeHint() const

{

    QWidget *mThis = (QWidget*)this;

    QApplication::sendPostedEvents(mThis, QEvent::ChildInserted);

    return Q3Frame::sizeHint();

}

/*!

    Sets the stretch factor of widget \a w to \a stretch. Returns true if

    \a w is found. Otherwise returns false.

    \sa QBoxLayout::setStretchFactor() \link layout.html Layouts\endlink

*/

bool Q3HBox::setStretchFactor(QWidget* w, int stretch)

{

    QApplication::sendPostedEvents(this, QEvent::ChildInserted);

    if (QBoxLayout *lay = qobject_cast<QBoxLayout *>(layout()))

        return lay->setStretchFactor(w, stretch);

    return false;

}

QT_END_NAMESPACE