mainwindow.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtCore module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** BSD License Usage
 ** Alternatively, 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."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 //Own
 #include "mainwindow.h"
 #include "graphicsscene.h"

 //Qt
 #include <QGraphicsView>
 #include <QApplication>
 #include <QMenu>
 #include <QMenuBar>
 #include <QLayout>

 #ifndef QT_NO_OPENGL
 # include <QtOpenGL/QtOpenGL>
 #endif

 MainWindow::MainWindow() : QMainWindow(0)
 {
     QMenu *file = menuBar()->addMenu(tr("&File"));

     QAction *newAction = file->addAction(tr("New Game"));
     newAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_N));
     QAction *quitAction = file->addAction(tr("Quit"));
     quitAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q));

     if (QApplication::arguments().contains("-fullscreen")) {
         scene = new GraphicsScene(0, 0, 750, 400, GraphicsScene::Small);
         setWindowState(Qt::WindowFullScreen);
     } else {
         scene = new GraphicsScene(0, 0, 880, 630);
         layout()->setSizeConstraint(QLayout::SetFixedSize);
     }

     view = new QGraphicsView(scene, this);
     view->setAlignment(Qt::AlignLeft | Qt::AlignTop);
     scene->setupScene(newAction, quitAction);
 #ifndef QT_NO_OPENGL
     QGLWidget *glWidget = new QGLWidget(QGLFormat(QGL::SampleBuffers));
     if (glWidget->context()->isValid()) {
         view->setViewport(glWidget);
     } else {
         qWarning("Unable to create an Open GL context with sample buffers, not using Open GL.");
         delete glWidget;
     }
 #endif
     setCentralWidget(view);
 }