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    41 

    42 #ifndef SCRIBBLEAREA_H

    43 #define SCRIBBLEAREA_H

    44 

    45 #include <QColor>

    46 #include <QImage>

    47 #include <QPoint>

    48 #include <QWidget>

    49 

    50 //! [0]

    51 class ScribbleArea : public QWidget

    52 {

    53     Q_OBJECT

    54 

    55 public:

    56     ScribbleArea(QWidget *parent = 0);

    57 

    58     bool openImage(const QString &fileName);

    59     bool saveImage(const QString &fileName, const char *fileFormat);

    60     void setPenColor(const QColor &newColor);

    61     void setPenWidth(int newWidth);

    62 

    63     bool isModified() const { return modified; }

    64     QColor penColor() const { return myPenColor; }

    65     int penWidth() const { return myPenWidth; }

    66 

    67 public slots:

    68     void clearImage();

    69     void print();

    70 

    71 protected:

    72     void mousePressEvent(QMouseEvent *event);

    73     void mouseMoveEvent(QMouseEvent *event);

    74     void mouseReleaseEvent(QMouseEvent *event);

    75     void paintEvent(QPaintEvent *event);

    76     void resizeEvent(QResizeEvent *event);

    77 

    78 private:

    79     void drawLineTo(const QPoint &endPoint);

    80     void resizeImage(QImage *image, const QSize &newSize);

    81 

    82     bool modified;

    83     bool scribbling;

    84     int myPenWidth;

    85     QColor myPenColor;

    86     QImage image;

    87     QPoint lastPoint;

    88 };

    89 //! [0]

    90 

    91 #endif