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pathdeform.h Example File
^{demos/deform/pathdeform.h}

 /****************************************************************************
 **
 ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
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 ** This file may be used under the terms of the GNU General Public
 ** 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
 ** General Public Licensing requirements will be met:
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 ** review the following information:
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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 ****************************************************************************/

 #ifndef PATHDEFORM_H
 #define PATHDEFORM_H

 #include "arthurwidgets.h"

 #include <QPainterPath>
 #include <QBasicTimer>
 #include <QDateTime>

 class PathDeformRenderer : public ArthurFrame
 {
     Q_OBJECT
     Q_PROPERTY(bool animated READ animated WRITE setAnimated)
     Q_PROPERTY(int radius READ radius WRITE setRadius)
     Q_PROPERTY(int fontSize READ fontSize WRITE setFontSize)
     Q_PROPERTY(int intensity READ intensity WRITE setIntensity)
     Q_PROPERTY(QString text READ text WRITE setText)

 public:
     PathDeformRenderer(QWidget *widget);

     void paint(QPainter *painter);

     void mousePressEvent(QMouseEvent *e);
     void mouseReleaseEvent(QMouseEvent *e);
     void mouseMoveEvent(QMouseEvent *e);
     void timerEvent(QTimerEvent *e);

     QSize sizeHint() const { return QSize(600, 500); }

     bool animated() const { return m_animated; }
     int radius() const { return int(m_radius); }
     int fontSize() const { return m_fontSize; }
     int intensity() const { return int(m_intensity); }
     QString text() const { return m_text; }

 public slots:
     void setRadius(int radius);
     void setFontSize(int fontSize) { m_fontSize = fontSize; setText(m_text); }
     void setText(const QString &text);
     void setIntensity(int intensity);

     void setAnimated(bool animated);

 // signals:
 //     void frameRate(double fps);

 private:
     void generateLensPixmap();
     QPainterPath lensDeform(const QPainterPath &source, const QPointF &offset);

     QBasicTimer m_repaintTimer;
 //     QBasicTimer m_fpsTimer;
 //     int m_fpsCounter;
     QTime m_repaintTracker;

     QVector<QPainterPath> m_paths;
     QVector<QPointF> m_advances;
     QRectF m_pathBounds;
     QString m_text;

     QPixmap m_lens_pixmap;
     QImage m_lens_image;

     int m_fontSize;
     bool m_animated;

     double m_intensity;
     double m_radius;
     QPointF m_pos;
     QPointF m_offset;
     QPointF m_direction;
 };

 class PathDeformWidget : public QWidget
 {
 public:
     PathDeformWidget(QWidget *parent);

 private:
     PathDeformRenderer *m_renderer;
 };

 #endif // PATHDEFORM_H