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Diffstat (limited to 'examples/widgets/shapedclock/shapedclock.cpp')
-rw-r--r-- | examples/widgets/shapedclock/shapedclock.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/examples/widgets/shapedclock/shapedclock.cpp b/examples/widgets/shapedclock/shapedclock.cpp new file mode 100644 index 0000000..9b8a282 --- /dev/null +++ b/examples/widgets/shapedclock/shapedclock.cpp @@ -0,0 +1,159 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#include "shapedclock.h" + +//! [0] +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")); +} +//! [0] + +//! [1] +void ShapedClock::mousePressEvent(QMouseEvent *event) +{ + if (event->button() == Qt::LeftButton) { + dragPosition = event->globalPos() - frameGeometry().topLeft(); + event->accept(); + } +} +//! [1] + +//! [2] +void ShapedClock::mouseMoveEvent(QMouseEvent *event) +{ + if (event->buttons() & Qt::LeftButton) { + move(event->globalPos() - dragPosition); + event->accept(); + } +} +//! [2] + +//! [3] +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); + } +} +//! [3] + +//! [4] +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); +} +//! [4] + +//! [5] +QSize ShapedClock::sizeHint() const +{ + return QSize(100, 100); +} +//! [5] |