Mega Code Archive
Shaped clock
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**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
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#ifndef SHAPEDCLOCK_H
#define SHAPEDCLOCK_H
#include <QWidget>
class ShapedClock : public QWidget
{
Q_OBJECT
public:
ShapedClock(QWidget *parent = 0);
QSize sizeHint() const;
protected:
void mouseMoveEvent(QMouseEvent *event);
void mousePressEvent(QMouseEvent *event);
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
private:
QPoint dragPosition;
};
#endif
#include <QtGui>
#include "shapedclock.h"
ShapedClock::ShapedClock(QWidget *parent)
: QWidget(parent, Qt::FramelessWindowHint | Qt::WindowSystemMenuHint)
{
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(update()));
timer->start(1000);
QAction *quitAction = new QAction(tr("E&xit"), this);
quitAction->setShortcut(tr("Ctrl+Q"));
connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
addAction(quitAction);
setContextMenuPolicy(Qt::ActionsContextMenu);
setToolTip(tr("Drag the clock with the left mouse button.\n"
"Use the right mouse button to open a context menu."));
setWindowTitle(tr("Shaped Analog Clock"));
}
void ShapedClock::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton) {
dragPosition = event->globalPos() - frameGeometry().topLeft();
event->accept();
}
}
void ShapedClock::mouseMoveEvent(QMouseEvent *event)
{
if (event->buttons() & Qt::LeftButton) {
move(event->globalPos() - dragPosition);
event->accept();
}
}
void ShapedClock::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() + 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);
}
}
void ShapedClock::resizeEvent(QResizeEvent * /* event */)
{
int side = qMin(width(), height());
QRegion maskedRegion(width() / 2 - side / 2, height() / 2 - side / 2, side,
side, QRegion::Ellipse);
setMask(maskedRegion);
}
QSize ShapedClock::sizeHint() const
{
return QSize(100, 100);
}
#include <QApplication>
#include "shapedclock.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
ShapedClock clock;
clock.show();
return app.exec();
}
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