Code for Shaped Clock Example
/****************************************************************************
**
** (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of Qt Jambi.
**
** ** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
package com.trolltech.examples;
import com.trolltech.qt.core.*;
import com.trolltech.qt.core.Qt.MouseButton;
import com.trolltech.qt.core.Qt.WindowFlags;
import com.trolltech.qt.gui.*;
@QtJambiExample(name = "Shaped Clock")
public class ShapedClock extends QWidget {
public static void main(String args[]) {
QApplication.initialize(args);
ShapedClock shapedClock = new ShapedClock(null);
shapedClock.show();
QApplication.exec();
}
private QPoint dragPosition = new QPoint();
private static QPolygon hourHand;
private static QPolygon minuteHand;
public ShapedClock(QWidget parent) {
super(parent, new WindowFlags(Qt.WindowType.FramelessWindowHint));
QTimer timer = new QTimer(this);
timer.timeout.connect(this, "update()");
timer.start(1000);
hourHand = new QPolygon();
hourHand.append(new QPoint(7, 8));
hourHand.append(new QPoint(-7, 8));
hourHand.append(new QPoint(0, -40));
minuteHand = new QPolygon();
minuteHand.append(new QPoint(7, 8));
minuteHand.append(new QPoint(-7, 8));
minuteHand.append(new QPoint(0, -70));
setWindowTitle(tr("Shaped Analog Clock"));
setContextMenuPolicy(Qt.ContextMenuPolicy.ActionsContextMenu);
QAction quitAction = new QAction(tr("E&xit"), this);
quitAction.setShortcut("Ctrl+Q");
quitAction.triggered.connect(this, "close()");
addAction(quitAction);
setToolTip(tr("Drag the clock with the left mouse button.\n" +
"Use the right mouse button to open a context menu."));
}
@Override
public void mousePressEvent(QMouseEvent event) {
if (event.button() == MouseButton.LeftButton) {
QPoint topLeft = frameGeometry().topLeft();
dragPosition.setX(event.globalPos().x() - topLeft.x());
dragPosition.setY(event.globalPos().y() - topLeft.y());
event.accept();
}
}
@Override
public void mouseMoveEvent(QMouseEvent event) {
if (event.buttons().isSet(MouseButton.LeftButton)) {
move(new QPoint(event.globalPos().x() - dragPosition.x(),
event.globalPos().y() - dragPosition.y()));
event.accept();
}
}
@Override
public void paintEvent(QPaintEvent event) {
QColor hourColor = new QColor(127, 0, 127);
QColor minuteColor = new QColor(0, 127, 127, 191);
int side = Math.min(width(), height());
QTime time = QTime.currentTime();
QPainter painter = new QPainter(this);
painter.setRenderHint(QPainter.RenderHint.Antialiasing);
painter.translate(width() / 2, height() / 2);
painter.scale(side / 200.0, side / 200.0);
painter.setPen(QPen.NoPen);
painter.setBrush(hourColor);
painter.save();
painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0)));
painter.drawConvexPolygon(hourHand);
painter.restore();
painter.setPen(hourColor);
for (int i = 0; i < 12; ++i) {
painter.drawLine(88, 0, 96, 0);
painter.rotate(30.0);
}
painter.setPen(QPen.NoPen);
painter.setBrush(minuteColor);
painter.save();
painter.rotate(6.0 * (time.minute() + time.second() / 60.0));
painter.drawConvexPolygon(minuteHand);
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);
}
}
@Override
public void resizeEvent(QResizeEvent event) {
int side = Math.min(width(), height());
QRegion maskedRegion;
maskedRegion = new QRegion((width() - side) / 2, (height() - side) / 2,
side, side, QRegion.RegionType.Ellipse);
setMask(maskedRegion);
}
@Override
public QSize sizeHint() {
return new QSize(100, 100);
}
}