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scribblearea.h Example File
^{widgets/scribble/scribblearea.h}

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    ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
    **
    ** This file is part of the documentation of the Qt Toolkit.
    **
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    ** and appearing in the file LICENSE.GPL included in the packaging of
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    #ifndef SCRIBBLEAREA_H
    #define SCRIBBLEAREA_H

    #include <QColor>
    #include <QImage>
    #include <QPoint>
    #include <QWidget>

    class ScribbleArea : public QWidget
    {
        Q_OBJECT

    public:
        ScribbleArea(QWidget *parent = 0);

        bool openImage(const QString &fileName);
        bool saveImage(const QString &fileName, const char *fileFormat);
        void setPenColor(const QColor &newColor);
        void setPenWidth(int newWidth);

        bool isModified() const { return modified; }
        QColor penColor() const { return myPenColor; }
        int penWidth() const { return myPenWidth; }

    public slots:
        void clearImage();

    protected:
        void mousePressEvent(QMouseEvent *event);
        void mouseMoveEvent(QMouseEvent *event);
        void mouseReleaseEvent(QMouseEvent *event);
        void paintEvent(QPaintEvent *event);
        void resizeEvent(QResizeEvent *event);

    private:
        void drawLineTo(const QPoint &endPoint);
        void resizeImage(QImage *image, const QSize &newSize);

        bool modified;
        bool scribbling;
        int myPenWidth;
        QColor myPenColor;
        QImage image;
        QPoint lastPoint;
    };

    #endif