echowindow.cpp Example File tools/echoplugin/echowindow/echowindow.cpp
#include <QtGui>
#include "echowindow.h"
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);
}
}
void EchoWindow::sendEcho()
{
QString text = echoInterface->echo(lineEdit->text());
label->setText(text);
}
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);
}
bool EchoWindow::loadPlugin()
{
QDir pluginDirectory(qApp->applicationDirPath() + "/plugin/");
QString fileName = pluginDirectory.entryList(
QStringList() << "libechoplugin*").first();
QPluginLoader pluginLoader(pluginDirectory.absoluteFilePath(fileName));
QObject *plugin = pluginLoader.instance();
if (plugin) {
echoInterface = qobject_cast<EchoInterface *>(plugin);
if(echoInterface)
return true;
}
return false;
}
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