analogclock.cpp

世界时间转换程序

/****************************************************************************
** File: 'analogclock.cpp'
**
** Created: Sat Dec 2 15:58:32 2006
**      by: Wya ($Id: edited Sat Dec 2 15:58:32 2006 $)
**
** WARNING! All changes made by wya
****************************************************************************/

#include <QtGui>

#include "analogclock.h"
/***
** construction 
***/
AnalogClock::AnalogClock(QWidget *parent)
    : QWidget(parent)
{
	m_offsetTimeValue=0;
    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(update()));
    timer->start(1000);

    setWindowTitle(tr("Analog Clock"));


	setSizeOfClock(150,150);
   
}
/***
** construction 
***/
void AnalogClock::paintEvent(QPaintEvent *)
{
    static const QPoint hourHand[3] = {
        QPoint(7, 8),
        QPoint(-7, 8),
        QPoint(0, -40)
    };
    static const QPoint minuteHand[3] = {
        QPoint(7, 8),
        QPoint(-7, 8),
        QPoint(0, -70)
    };

    QColor hourColor(127, 0, 127);
    QColor minuteColor(0, 127, 127, 191);

    int side = qMin(width(), height());
    QTime time = QTime::currentTime();

    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.translate(width() / 2, height() / 2);
    painter.scale(side / 200.0, side / 200.0);

    painter.setPen(Qt::NoPen);
    painter.setBrush(hourColor);

    painter.save();
    painter.rotate(30.0 * ((time.hour()+getOffsetTimeValue() + time.minute() / 60.0)));
    painter.drawConvexPolygon(hourHand, 3);
    painter.restore();

    painter.setPen(hourColor);

    for (int i = 0; i < 12; ++i) {
        painter.drawLine(88, 0, 96, 0);
        painter.rotate(30.0);
    }

    painter.setPen(Qt::NoPen);
    painter.setBrush(minuteColor);

    painter.save();
    painter.rotate(6.0 * (time.minute() + time.second() / 60.0));
    painter.drawConvexPolygon(minuteHand, 3);
    painter.restore();

    painter.setPen(minuteColor);

    for (int j = 0; j < 60; ++j) {
        if ((j % 5) != 0)
            painter.drawLine(92, 0, 96, 0);
        painter.rotate(6.0);
    }
}
/***
** set size of clock
**
***/
void AnalogClock::setSizeOfClock(int width,int heigh)
{
  resize(width, heigh);
}