Long live Qt 4.5!

1 files changed, 119 insertions, 0 deletions

diff --git a/examples/tools/echoplugin/echowindow/echowindow.cpp b/examples/tools/echoplugin/echowindow/echowindow.cpp
new file mode 100644
index 0000000..0de85ea
--- /dev/null
+++ b/examples/tools/echoplugin/echowindow/echowindow.cpp
@@ -0,0 +1,119 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#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]