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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef TABLETCANVAS_H
+#define TABLETCANVAS_H
+
+#include <QWidget>
+#include <QImage>
+#include <QPoint>
+#include <QTabletEvent>
+#include <QColor>
+#include <QBrush>
+#include <QPen>
+#include <QPoint>
+
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+class QString;
+QT_END_NAMESPACE
+
+//! [0]
+class TabletCanvas : public QWidget
+{
+    Q_OBJECT
+
+public:
+    enum AlphaChannelType { AlphaPressure, AlphaTilt, NoAlpha };
+    enum ColorSaturationType { SaturationVTilt, SaturationHTilt,
+                               SaturationPressure, NoSaturation };
+    enum LineWidthType { LineWidthPressure, LineWidthTilt, NoLineWidth };
+
+    TabletCanvas();
+
+    bool saveImage(const QString &file);
+    bool loadImage(const QString &file);
+    void setAlphaChannelType(AlphaChannelType type)
+        { alphaChannelType = type; }
+    void setColorSaturationType(ColorSaturationType type)
+        { colorSaturationType = type; }
+    void setLineWidthType(LineWidthType type)
+        { lineWidthType = type; }
+    void setColor(const QColor &color)
+        { myColor = color; }
+    QColor color() const
+        { return myColor; }
+    void setTabletDevice(QTabletEvent::TabletDevice device)
+        { myTabletDevice = device; }
+    int maximum(int a, int b)
+        { return a > b ? a : b; }
+
+protected:
+    void tabletEvent(QTabletEvent *event);
+    void paintEvent(QPaintEvent *event);
+    void resizeEvent(QResizeEvent *event);
+
+private:
+    void initImage();
+    void paintImage(QPainter &painter, QTabletEvent *event);
+    Qt::BrushStyle brushPattern(qreal value);
+    void updateBrush(QTabletEvent *event);
+
+    AlphaChannelType alphaChannelType;
+    ColorSaturationType colorSaturationType;
+    LineWidthType lineWidthType;
+    QTabletEvent::PointerType pointerType;
+    QTabletEvent::TabletDevice myTabletDevice;
+    QColor myColor;
+
+    QImage image;
+    QBrush myBrush;
+    QPen myPen;
+    bool deviceDown;
+    QPoint polyLine[3];
+};
+//! [0]
+
+#endif