/* ======================================================================
**  main.cpp
** ======================================================================
**
** ======================================================================
**  Copyright (c) 2007 by Max Schlee
** ======================================================================
*/

#include <QtGui>

// ======================================================================
class MyThread : public QThread {
Q_OBJECT
private:
    int m_nValue;

public:
    MyThread() : m_nValue(10)
    {
    }

    void run()
    {
        QTimer timer;
        //^^^^^^^^^^^
        //а где будет эта переменная когда run() закончится
        //а event loop будет продолжаться и тред должен будет
        //дрыгать этим таймером раз в секунду?

        connect(&timer, SIGNAL(timeout()), SLOT(slotNextValue()));
        timer.start(1000);

        exec();
    }

signals:
    void finished    (   );
    void currentValue(int);

public slots:
    void slotNextValue()
    {
        emit currentValue(--m_nValue);

        if (!m_nValue) {
            emit finished();
        }
        
    }
};

// ----------------------------------------------------------------------
int main(int argc, char** argv)
{
    QApplication app(argc, argv);
    QLCDNumber   lcd;
    MyThread     thread;

    QObject::connect(&thread, SIGNAL(currentValue(int)), 
                     &lcd,    SLOT(display(int))
                    );
    QObject::connect(&thread, SIGNAL(finished()), 
                     &app,    SLOT(quit())
                    );

    lcd.setSegmentStyle(QLCDNumber::Filled);
    lcd.display(10);
    lcd.resize(220, 90);
    lcd.show();
    thread.start();
 
    return app.exec();
}

#include "main.moc"

class MandelbrotWidget : public QWidget
{
//...
private slots:
    void updatePixmap(const QImage &image, double scaleFactor);
//...
}

class RenderThread : public QThread
{
//...
signals:
    void renderedImage(const QImage &image, double scaleFactor);

protected:
    void run();
//...
}

MandelbrotWidget::MandelbrotWidget(QWidget *parent)
    : QWidget(parent)
{
//...
    connect(&thread, SIGNAL(renderedImage(QImage,double)),
            this, SLOT(updatePixmap(QImage,double)));
//...
}


void RenderThread::run()
{
QImage image(resultSize, QImage::Format_RGB32);
 forever {
//...
emit renderedImage(image, scaleFactor);
//...
}
}


void MandelbrotWidget::updatePixmap(const QImage &image, double scaleFactor)
{
//...
pixmap = QPixmap::fromImage(image);
//...
}