examples/widgets/analogclock/analogclock.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/widgets/analogclock/analogclock.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,146 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "analogclock.h"
+
+//! [0] //! [1]
+AnalogClock::AnalogClock(QWidget *parent)
+//! [0] //! [2]
+    : QWidget(parent)
+//! [2] //! [3]
+{
+//! [3] //! [4]
+    QTimer *timer = new QTimer(this);
+//! [4] //! [5]
+    connect(timer, SIGNAL(timeout()), this, SLOT(update()));
+//! [5] //! [6]
+    timer->start(1000);
+//! [6]
+
+    setWindowTitle(tr("Analog Clock"));
+    resize(200, 200);
+//! [7]
+}
+//! [1] //! [7]
+
+//! [8] //! [9]
+void AnalogClock::paintEvent(QPaintEvent *)
+//! [8] //! [10]
+{
+    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();
+//! [10]
+
+//! [11]
+    QPainter painter(this);
+//! [11] //! [12]
+    painter.setRenderHint(QPainter::Antialiasing);
+//! [12] //! [13]
+    painter.translate(width() / 2, height() / 2);
+//! [13] //! [14]
+    painter.scale(side / 200.0, side / 200.0);
+//! [9] //! [14]
+
+//! [15]
+    painter.setPen(Qt::NoPen);
+//! [15] //! [16]
+    painter.setBrush(hourColor);
+//! [16]
+
+//! [17] //! [18]
+    painter.save();
+//! [17] //! [19]
+    painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0)));
+    painter.drawConvexPolygon(hourHand, 3);
+    painter.restore();
+//! [18] //! [19]
+
+//! [20]
+    painter.setPen(hourColor);
+//! [20] //! [21]
+
+    for (int i = 0; i < 12; ++i) {
+        painter.drawLine(88, 0, 96, 0);
+        painter.rotate(30.0);
+    }
+//! [21]
+
+//! [22]
+    painter.setPen(Qt::NoPen);
+//! [22] //! [23]
+    painter.setBrush(minuteColor);
+
+//! [24]
+    painter.save();
+    painter.rotate(6.0 * (time.minute() + time.second() / 60.0));
+    painter.drawConvexPolygon(minuteHand, 3);
+    painter.restore();
+//! [23] //! [24]
+
+//! [25]
+    painter.setPen(minuteColor);
+//! [25] //! [26]
+
+//! [27]
+    for (int j = 0; j < 60; ++j) {
+        if ((j % 5) != 0)
+            painter.drawLine(92, 0, 96, 0);
+        painter.rotate(6.0);
+    }
+//! [27]
+}
+//! [26]