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#ifndef GLWIDGET_H

#define GLWIDGET_H

#include <QBrush>

#include <QFont>

#include <QImage>

#include <QPen>

#include <QGLWidget>

#include <QTimer>

class Bubble;

class QtLogo;

QT_BEGIN_NAMESPACE

class QPaintEvent;

class QWidget;

QT_END_NAMESPACE

//! [0]

class GLWidget : public QGLWidget

{

    Q_OBJECT

public:

    GLWidget(QWidget *parent = 0);

    ~GLWidget();

//! [0]

    QSize sizeHint() const;

    int xRotation() const { return xRot; }

    int yRotation() const { return yRot; }

    int zRotation() const { return zRot; }

public slots:

    void setXRotation(int angle);

    void setYRotation(int angle);

    void setZRotation(int angle);

//! [1]

protected:

    void initializeGL();

    void paintEvent(QPaintEvent *event);

    void resizeGL(int width, int height);

    void mousePressEvent(QMouseEvent *event);

    void mouseMoveEvent(QMouseEvent *event);

    void showEvent(QShowEvent *event);

private slots:

    void animate();

private:

    void createBubbles(int number);

    void drawInstructions(QPainter *painter);

//! [1]

    void setupViewport(int width, int height);

    QColor qtGreen;

    QColor qtPurple;

    GLuint object;

    int xRot;

    int yRot;

    int zRot;

    QPoint lastPos;

//! [4]

    QtLogo *logo;

    QList<Bubble*> bubbles;

    QTimer animationTimer;

//! [4]

};

#endif