main.cpp Example File

script/calculator/main.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2015 The Qt Company Ltd.
 ** Contact: http://www.qt.io/licensing/
 **
 ** 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 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 <QApplication>
 #include <QUiLoader>
 #include <QtScript>
 #include <QWidget>
 #include <QFile>
 #include <QMainWindow>
 #include <QLineEdit>

 #ifndef QT_NO_SCRIPTTOOLS
 #include <QScriptEngineDebugger>
 #endif

 int main(int argc, char **argv)
 {
     Q_INIT_RESOURCE(calculator);

     QApplication app(argc, argv);
     QScriptEngine engine;

 #if !defined(QT_NO_SCRIPTTOOLS)
     QScriptEngineDebugger debugger;
     debugger.attachTo(&engine);
     QMainWindow *debugWindow = debugger.standardWindow();
     debugWindow->resize(1024, 640);
 #endif

     QString scriptFileName(":/calculator.js");
     QFile scriptFile(scriptFileName);
     scriptFile.open(QIODevice::ReadOnly);
     engine.evaluate(scriptFile.readAll(), scriptFileName);
     scriptFile.close();

     QUiLoader loader;
     QFile uiFile(":/calculator.ui");
     uiFile.open(QIODevice::ReadOnly);
     QWidget *ui = loader.load(&uiFile);
     uiFile.close();

     QScriptValue ctor = engine.evaluate("Calculator");
     QScriptValue scriptUi = engine.newQObject(ui, QScriptEngine::ScriptOwnership);
     QScriptValue calc = ctor.construct(QScriptValueList() << scriptUi);

 #if !defined(QT_NO_SCRIPTTOOLS)
     QLineEdit *display = ui->findChild<QLineEdit*>("display");
     QObject::connect(display, SIGNAL(returnPressed()),
                      debugWindow, SLOT(show()));
 #endif
     ui->show();
     return app.exec();
 }