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Diffstat (limited to 'examples/qml/qmlextensionplugins/timemodel.h')
-rw-r--r-- | examples/qml/qmlextensionplugins/timemodel.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/examples/qml/qmlextensionplugins/timemodel.h b/examples/qml/qmlextensionplugins/timemodel.h new file mode 100644 index 0000000000..bb107aeb71 --- /dev/null +++ b/examples/qml/qmlextensionplugins/timemodel.h @@ -0,0 +1,111 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, 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 The Qt Company Ltd 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef TIMEMODEL_H +#define TIMEMODEL_H + +#include <QtQml/qqml.h> +#include <QtCore/qdatetime.h> +#include <QtCore/qbasictimer.h> +#include <QtCore/qcoreapplication.h> + +// Implements a "TimeModel" class with hour and minute properties +// that change on-the-minute yet efficiently sleep the rest +// of the time. + +class MinuteTimer : public QObject +{ + Q_OBJECT +public: + MinuteTimer(QObject *parent) : QObject(parent) {} + + void start(); + void stop(); + + int hour() const { return time.hour(); } + int minute() const { return time.minute(); } + +signals: + void timeChanged(); + +protected: + void timerEvent(QTimerEvent *) override; + +private: + QTime time; + QBasicTimer timer; +}; + +//![0] +class TimeModel : public QObject +{ + Q_OBJECT + Q_PROPERTY(int hour READ hour NOTIFY timeChanged) + Q_PROPERTY(int minute READ minute NOTIFY timeChanged) + QML_NAMED_ELEMENT(Time) +//![0] + +public: + TimeModel(QObject *parent=nullptr); + ~TimeModel() override; + + int minute() const { return timer->minute(); } + int hour() const { return timer->hour(); } + +signals: + void timeChanged(); + +private: + QTime t; + static MinuteTimer *timer; + static int instances; +}; + +#endif // TIMEMODEL_H |