diff options
Diffstat (limited to 'examples/widgets/tutorials/threads/clock')
4 files changed, 211 insertions, 0 deletions
diff --git a/examples/widgets/tutorials/threads/clock/clock.pro b/examples/widgets/tutorials/threads/clock/clock.pro new file mode 100644 index 0000000000..b07c84a627 --- /dev/null +++ b/examples/widgets/tutorials/threads/clock/clock.pro @@ -0,0 +1,14 @@ +CONFIG += console +TEMPLATE = app +SOURCES += main.cpp \ + clockthread.cpp +HEADERS += clockthread.h + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/tutorials/threads/clock +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS clock.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/tutorials/threads/clock +INSTALLS += target sources + + +QT += widgets diff --git a/examples/widgets/tutorials/threads/clock/clockthread.cpp b/examples/widgets/tutorials/threads/clock/clockthread.cpp new file mode 100644 index 0000000000..dccf4446ef --- /dev/null +++ b/examples/widgets/tutorials/threads/clock/clockthread.cpp @@ -0,0 +1,66 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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 <QtWidgets> +#include "clockthread.h" + + //This class starts another thread where it emits a signal for every new second. + +//! [1] +// clock/clockthread.cpp +void ClockThread::run() +{ + QTimer timer; + connect(&timer, SIGNAL(timeout()), this, SLOT(timerHit()), Qt::DirectConnection); + timer.setInterval(10); + timer.start(); // puts one event in the threads event queue + exec(); + timer.stop(); +} + +void ClockThread::timerHit() +{ + QString newTime= QDateTime::currentDateTime().toString("ddd MMMM d yy, hh:mm:ss"); + if(m_lastTime != newTime ){ + m_lastTime = newTime; + emit sendTime(newTime) ; + } +} +//! [1] diff --git a/examples/widgets/tutorials/threads/clock/clockthread.h b/examples/widgets/tutorials/threads/clock/clockthread.h new file mode 100644 index 0000000000..e33b38fca4 --- /dev/null +++ b/examples/widgets/tutorials/threads/clock/clockthread.h @@ -0,0 +1,64 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef CLOCKTHREAD_H +#define CLOCKTHREAD_H + +#include <QString> +#include <QThread> + + + +//! [1] +// clock/clockthread.h +class ClockThread : public QThread +{ + Q_OBJECT +signals: + void sendTime(QString time); +private: + void run(); + QString m_lastTime; +private slots: + void timerHit(); + +}; +//! [1] +#endif // CLOCKTHREAD_H
\ No newline at end of file diff --git a/examples/widgets/tutorials/threads/clock/main.cpp b/examples/widgets/tutorials/threads/clock/main.cpp new file mode 100644 index 0000000000..78c27440d6 --- /dev/null +++ b/examples/widgets/tutorials/threads/clock/main.cpp @@ -0,0 +1,67 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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 <QtWidgets> +#include "clockthread.h" + +//A clock that does time formatting in another thread + +//! [1] +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + // build gui + QWidget widget; + QLabel *label = new QLabel; + QHBoxLayout *layout = new QHBoxLayout(&widget); + layout->addWidget(label); + widget.setWindowTitle("clock"); + + //instantiate thread object + ClockThread clockThread; + QObject::connect(&clockThread, SIGNAL(sendTime(QString)), label, SLOT(setText(QString)), Qt::QueuedConnection); + clockThread.start(); + widget.show(); + app.exec(); + clockThread.quit(); + clockThread.wait(); + return 0; +} +//! [1] |