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Diffstat (limited to 'tests/manual/wasm/eventloop/thread_exec/main.cpp')
-rw-r--r-- | tests/manual/wasm/eventloop/thread_exec/main.cpp | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/tests/manual/wasm/eventloop/thread_exec/main.cpp b/tests/manual/wasm/eventloop/thread_exec/main.cpp new file mode 100644 index 0000000000..fb477843d8 --- /dev/null +++ b/tests/manual/wasm/eventloop/thread_exec/main.cpp @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2021 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include <QtGui> + +class EventTarget : public QObject +{ + Q_OBJECT +protected: + bool event(QEvent *evt) + { + if (evt->type() == QEvent::User) { + qDebug() << "User event on thread" << QThread::currentThread(); + return true; + } + return QObject::event(evt); + } +}; + +class EventPosterWindow: public QRasterWindow +{ +public: + EventPosterWindow(EventTarget *target) + :m_target(target) + { } + + void paintEvent(QPaintEvent *ev) override { + QPainter p(this); + p.fillRect(ev->rect(), QColorConstants::Svg::deepskyblue); + p.drawText(50, 100, "Application has started. Click to post events.\n See the developer tools console for debug output"); + } + + void mousePressEvent(QMouseEvent *) override { + qDebug() << "Posting events from thread" << QThread::currentThread(); + QGuiApplication::postEvent(m_target, new QEvent(QEvent::User)); + QTimer::singleShot(500, m_target, []() { + qDebug() << "Timer event on secondary thread" << QThread::currentThread(); + }); + } + +public: + EventTarget *m_target; +}; + +class SecondaryThread : public QThread +{ +public: + void run() override { + qDebug() << "exec on secondary thread" << QThread::currentThread(); + exec(); + } +}; + +// This example demonstrates how to start a secondary thread event loop +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + EventTarget eventTarget; + + EventPosterWindow window(&eventTarget); + window.show(); + + SecondaryThread thread; + eventTarget.moveToThread(&thread); + +#if QT_CONFIG(thread) + thread.start(); +#else + qDebug() << "Warning: This test requires a multithreaded build of Qt for WebAssembly"; +#endif + + return app.exec(); +} + +#include "main.moc" |