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# objects.cpp Example File
activeqt/hierarchy/objects.cpp

    /****************************************************************************
    **
    ** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #include "objects.h"
    #include <QLayout>
    #include <QPainter>

    /* Implementation of QParentWidget */
    QParentWidget::QParentWidget(QWidget *parent)
    : QWidget(parent)
    {
        vbox = new QVBoxLayout(this);
    }

    void QParentWidget::createSubWidget(const QString &name)
    {
        QSubWidget *sw = new QSubWidget(this, name);
        vbox->addWidget(sw);
        sw->setLabel(name);
        sw->show();
    }

    QSubWidget *QParentWidget::subWidget(const QString &name)
    {
        return qFindChild<QSubWidget*>(this, name);
    }

    QSize QParentWidget::sizeHint() const
    {
        return QWidget::sizeHint().expandedTo(QSize(100, 100));
    }

    /* Implementation of QSubWidget */
    QSubWidget::QSubWidget(QWidget *parent, const QString &name)
    : QWidget(parent)
    {
        setObjectName(name);
    }

    void QSubWidget::setLabel(const QString &text)
    {
        lbl = text;
        setObjectName(text);
        update();
    }

    QString QSubWidget::label() const
    {
        return lbl;
    }

    QSize QSubWidget::sizeHint() const
    {
        QFontMetrics fm(font());
        return QSize(fm.width(lbl), fm.height());
    }

    void QSubWidget::paintEvent(QPaintEvent *)
    {
        QPainter painter(this);
        painter.setPen(palette().text().color());
        painter.drawText(rect(), Qt::AlignCenter, lbl);
    }