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Diffstat (limited to 'examples/widgets/shapedclock/shapedclock.cpp')
-rw-r--r-- | examples/widgets/shapedclock/shapedclock.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/examples/widgets/shapedclock/shapedclock.cpp b/examples/widgets/shapedclock/shapedclock.cpp new file mode 100644 index 0000000000..71c27bff14 --- /dev/null +++ b/examples/widgets/shapedclock/shapedclock.cpp @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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] |