57fae860fd
Task-number: QTBUG-60635 Change-Id: I4313ff65875d20b768d7ad6e9c8322bd5cf7f1ab Reviewed-by: Paul Wicking <paul.wicking@qt.io> Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
129 lines
4.4 KiB
C++
129 lines
4.4 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 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 <QtWidgets>
|
|
|
|
#include "echowindow.h"
|
|
|
|
//! [0]
|
|
EchoWindow::EchoWindow()
|
|
{
|
|
createGUI();
|
|
setLayout(layout);
|
|
setWindowTitle("Echo Plugin Example");
|
|
|
|
if (!loadPlugin()) {
|
|
QMessageBox::information(this, "Error", "Could not load the plugin");
|
|
lineEdit->setEnabled(false);
|
|
button->setEnabled(false);
|
|
}
|
|
}
|
|
//! [0]
|
|
|
|
//! [1]
|
|
void EchoWindow::sendEcho()
|
|
{
|
|
QString text = echoInterface->echo(lineEdit->text());
|
|
label->setText(text);
|
|
}
|
|
//! [1]
|
|
|
|
//! [2]
|
|
void EchoWindow::createGUI()
|
|
{
|
|
lineEdit = new QLineEdit;
|
|
label = new QLabel;
|
|
label->setFrameStyle(QFrame::Box | QFrame::Plain);
|
|
button = new QPushButton(tr("Send Message"));
|
|
|
|
connect(lineEdit, &QLineEdit::editingFinished,
|
|
this, &EchoWindow::sendEcho);
|
|
connect(button, &QPushButton::clicked,
|
|
this, &EchoWindow::sendEcho);
|
|
|
|
layout = new QGridLayout;
|
|
layout->addWidget(new QLabel(tr("Message:")), 0, 0);
|
|
layout->addWidget(lineEdit, 0, 1);
|
|
layout->addWidget(new QLabel(tr("Answer:")), 1, 0);
|
|
layout->addWidget(label, 1, 1);
|
|
layout->addWidget(button, 2, 1, Qt::AlignRight);
|
|
layout->setSizeConstraint(QLayout::SetFixedSize);
|
|
}
|
|
//! [2]
|
|
|
|
//! [3]
|
|
bool EchoWindow::loadPlugin()
|
|
{
|
|
QDir pluginsDir(qApp->applicationDirPath());
|
|
#if defined(Q_OS_WIN)
|
|
if (pluginsDir.dirName().toLower() == "debug" || pluginsDir.dirName().toLower() == "release")
|
|
pluginsDir.cdUp();
|
|
#elif defined(Q_OS_MAC)
|
|
if (pluginsDir.dirName() == "MacOS") {
|
|
pluginsDir.cdUp();
|
|
pluginsDir.cdUp();
|
|
pluginsDir.cdUp();
|
|
}
|
|
#endif
|
|
pluginsDir.cd("plugins");
|
|
foreach (QString fileName, pluginsDir.entryList(QDir::Files)) {
|
|
QPluginLoader pluginLoader(pluginsDir.absoluteFilePath(fileName));
|
|
QObject *plugin = pluginLoader.instance();
|
|
if (plugin) {
|
|
echoInterface = qobject_cast<EchoInterface *>(plugin);
|
|
if (echoInterface)
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
//! [3]
|