analogclock.cpp Example File | Qt 4.8 (original) (raw)

widgets/analogclock/analogclock.cpp

#include

#include "analogclock.h"

AnalogClock::AnalogClock(QWidget *parent) : QWidget(parent) { QTimer *timer = new QTimer(this); connect(timer, SIGNAL(timeout()), this, SLOT(update())); timer->start(1000);

setWindowTitle(tr("Analog Clock"));
resize(200, 200);

}

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](qcolor.html) hourColor(127, 0, 127);
[QColor](qcolor.html) minuteColor(0, 127, 127, 191);

int side = [qMin](qtglobal.html#qMin)(width(), height());
[QTime](qtime.html) time = [QTime](qtime.html)::currentTime();

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

painter.setPen([Qt](qt-module.html)::NoPen);
painter.setBrush(hourColor);

painter.save();
painter.rotate(30.0 * ((time.hour() + 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](qt-module.html)::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);
}

}

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