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diff --git a/examples/pdfwidgets/pdfviewer/zoomselector.cpp b/examples/pdfwidgets/pdfviewer/zoomselector.cpp
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+++ b/examples/pdfwidgets/pdfviewer/zoomselector.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtPDF module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "zoomselector.h"
+
+#include <QLineEdit>
+
+ZoomSelector::ZoomSelector(QWidget *parent)
+    : QComboBox(parent)
+{
+    setEditable(true);
+
+    addItem(QLatin1String("Fit Width"));
+    addItem(QLatin1String("Fit Page"));
+    addItem(QLatin1String("12%"));
+    addItem(QLatin1String("25%"));
+    addItem(QLatin1String("33%"));
+    addItem(QLatin1String("50%"));
+    addItem(QLatin1String("66%"));
+    addItem(QLatin1String("75%"));
+    addItem(QLatin1String("100%"));
+    addItem(QLatin1String("125%"));
+    addItem(QLatin1String("150%"));
+    addItem(QLatin1String("200%"));
+    addItem(QLatin1String("400%"));
+
+    connect(this, static_cast<void(QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged),
+            this, &ZoomSelector::onCurrentTextChanged);
+
+    connect(lineEdit(), &QLineEdit::editingFinished,
+            this, [this](){onCurrentTextChanged(lineEdit()->text()); });
+}
+
+void ZoomSelector::setZoomFactor(qreal zoomFactor)
+{
+    setCurrentText(QString::number(qRound(zoomFactor * 100)) + QLatin1String("%"));
+}
+
+void ZoomSelector::reset()
+{
+    setCurrentIndex(8); // 100%
+}
+
+void ZoomSelector::onCurrentTextChanged(const QString &text)
+{
+    if (text == QLatin1String("Fit Width")) {
+        emit zoomModeChanged(QPdfView::FitToWidth);
+    } else if (text == QLatin1String("Fit Page")) {
+        emit zoomModeChanged(QPdfView::FitInView);
+    } else {
+        qreal factor = 1.0;
+
+        QString withoutPercent(text);
+        withoutPercent.remove(QLatin1Char('%'));
+
+        bool ok = false;
+        const int zoomLevel = withoutPercent.toInt(&ok);
+        if (ok)
+            factor = zoomLevel / 100.0;
+
+        emit zoomModeChanged(QPdfView::CustomZoom);
+        emit zoomFactorChanged(factor);
+    }
+}