Qt 4.8: main.cpp Example File (script/qstetrix/main.cpp)

Qt Reference Documentation

# main.cpp Example File

script/qstetrix/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** 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 Nokia Corporation 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 "tetrixboard.h"

     #include <QtGui>
     #include <QtScript>
     #include <QUiLoader>

     #ifndef QT_NO_SCRIPTTOOLS
     #include <QtScriptTools>
     #endif

     struct QtMetaObject : private QObject
     {
     public:
         static const QMetaObject *get()
             { return &static_cast<QtMetaObject*>(0)->staticQtMetaObject; }
     };

     class TetrixUiLoader : public QUiLoader
     {
     public:
         TetrixUiLoader(QObject *parent = 0)
             : QUiLoader(parent)
             { }
         virtual QWidget *createWidget(const QString &className, QWidget *parent = 0,
                                       const QString &name = QString())
         {
             if (className == QLatin1String("TetrixBoard")) {
                 QWidget *board = new TetrixBoard(parent);
                 board->setObjectName(name);
                 return board;
             }
             return QUiLoader::createWidget(className, parent, name);
         }
     };

     static QScriptValue evaluateFile(QScriptEngine &engine, const QString &fileName)
     {
         QFile file(fileName);
         file.open(QIODevice::ReadOnly);
         return engine.evaluate(file.readAll(), fileName);
     }

     int main(int argc, char *argv[])
     {
         Q_INIT_RESOURCE(tetrix);

         QApplication app(argc, argv);
         QScriptEngine engine;

         QScriptValue Qt = engine.newQMetaObject(QtMetaObject::get());
         Qt.setProperty("App", engine.newQObject(&app));
         engine.globalObject().setProperty("Qt", Qt);

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

         evaluateFile(engine, ":/tetrixpiece.js");
         evaluateFile(engine, ":/tetrixboard.js");
         evaluateFile(engine, ":/tetrixwindow.js");

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

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

         QPushButton *debugButton = ui->findChild<QPushButton*>("debugButton");
     #if !defined(QT_NO_SCRIPTTOOLS)
         QObject::connect(debugButton, SIGNAL(clicked()),
                          debugger.action(QScriptEngineDebugger::InterruptAction),
                          SIGNAL(triggered()));
         QObject::connect(debugButton, SIGNAL(clicked()),
                          debugWindow, SLOT(show()));
     #else
         debugButton->hide();
     #endif

         ui->resize(550, 370);
         ui->show();

         qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
         return app.exec();
     }