qt5base-lts/examples/gui/analogclock/main.cpp
Gunnar Sletta c97104f31e Analog clock and raster window examples
Change-Id: I36586fbaa7da25208bbc1964d2708f094d0d5c98
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
2012-07-13 09:55:18 +02:00

161 lines
4.0 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the examples of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:BSD$
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#include <QtGui>
#include "rasterwindow.h"
//! [5]
class AnalogClockWindow : public RasterWindow
{
public:
AnalogClockWindow();
protected:
void timerEvent(QTimerEvent *);
void render(QPainter *p);
private:
int m_timerId;
};
//! [5]
//! [6]
AnalogClockWindow::AnalogClockWindow()
{
setWindowTitle("Analog Clock");
resize(200, 200);
m_timerId = startTimer(1000);
}
//! [6]
//! [7]
void AnalogClockWindow::timerEvent(QTimerEvent *event)
{
if (event->timerId() == m_timerId)
renderLater();
}
//! [7]
//! [1] //! [14]
void AnalogClockWindow::render(QPainter *p)
{
//! [14]
//! [8]
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);
//! [8]
//! [9]
p->setRenderHint(QPainter::Antialiasing);
//! [9] //! [10]
p->translate(width() / 2, height() / 2);
int side = qMin(width(), height());
p->scale(side / 200.0, side / 200.0);
//! [1] //! [10]
//! [11]
p->setPen(Qt::NoPen);
p->setBrush(hourColor);
//! [11]
//! [2]
QTime time = QTime::currentTime();
p->save();
p->rotate(30.0 * ((time.hour() + time.minute() / 60.0)));
p->drawConvexPolygon(hourHand, 3);
p->restore();
//! [2]
//! [12]
p->setPen(hourColor);
for (int i = 0; i < 12; ++i) {
p->drawLine(88, 0, 96, 0);
p->rotate(30.0);
}
//! [12] //! [13]
p->setPen(Qt::NoPen);
p->setBrush(minuteColor);
//! [13]
//! [3]
p->save();
p->rotate(6.0 * (time.minute() + time.second() / 60.0));
p->drawConvexPolygon(minuteHand, 3);
p->restore();
//! [3]
//! [4]
p->setPen(minuteColor);
for (int j = 0; j < 60; ++j) {
if ((j % 5) != 0)
p->drawLine(92, 0, 96, 0);
p->rotate(6.0);
}
//! [4]
}
int main(int argc, char **argv)
{
QGuiApplication app(argc, argv);
AnalogClockWindow clock;
clock.show();
app.exec();
}