diff options
Diffstat (limited to 'examples/widgets/tools/echoplugin/echowindow/echowindow.cpp')
-rw-r--r-- | examples/widgets/tools/echoplugin/echowindow/echowindow.cpp | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/examples/widgets/tools/echoplugin/echowindow/echowindow.cpp b/examples/widgets/tools/echoplugin/echowindow/echowindow.cpp new file mode 100644 index 0000000000..7cc97e16eb --- /dev/null +++ b/examples/widgets/tools/echoplugin/echowindow/echowindow.cpp @@ -0,0 +1,118 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** 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 Digia Plc 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 "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, SIGNAL(editingFinished()), + this, SLOT(sendEcho())); + connect(button, SIGNAL(clicked()), + this, SLOT(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] |