Qt 4.0: pathdeform.h Example File (demos/deform/pathdeform.h)

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# pathdeform.h Example File
demos/deform/pathdeform.h

        #ifndef PATHDEFORM_H
        #define PATHDEFORM_H

        #include "arthurwidgets.h"

        #include <qevent.h>
        #include <qpainterpath.h>
        #include <qbasictimer.h>
        #include <qdatetime.h>

        class PathDeformRenderer : public ArthurFrame
        {
            Q_OBJECT
        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); }

        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