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40 
41 #include "mainwindow.h"
42 
43 #include <QApplication>
44 #include <QMenuBar>
45 #include <QGroupBox>
46 #include <QGridLayout>
47 #include <QSlider>
48 #include <QLabel>
49 #include <QTimer>
50 
51 #include "glwidget.h"
52 
MainWindow()53 MainWindow::MainWindow()
54 {
55     GLWidget *glwidget = new GLWidget();
56     QLabel *label = new QLabel(this);
57     QTimer *timer = new QTimer(this);
58     QSlider *slider = new QSlider(this);
59     slider->setOrientation(Qt::Horizontal);
60 
61     slider->setRange(0, 100);
62     slider->setSliderPosition(50);
63     timer->setInterval(10);
64     label->setText("A QGlWidget with OpenGl ES");
65     label->setAlignment(Qt::AlignHCenter);
66 
67     QGroupBox * groupBox = new QGroupBox(this);
68     setCentralWidget(groupBox);
69     groupBox->setTitle("OpenGL ES Example");
70 
71     QGridLayout *layout = new QGridLayout(groupBox);
72 
73     layout->addWidget(glwidget,1,0,8,1);
74     layout->addWidget(label,9,0,1,1);
75     layout->addWidget(slider, 11,0,1,1);
76 
77     groupBox->setLayout(layout);
78 
79     QMenu *fileMenu = new QMenu("File");
80     QMenu *helpMenu = new QMenu("Help");
81     QMenu *showMenu = new QMenu("Show");
82     menuBar()->addMenu(fileMenu);
83     menuBar()->addMenu(showMenu);
84     menuBar()->addMenu(helpMenu);
85     QAction *exit = new QAction("Exit", fileMenu);
86     QAction *aboutQt = new QAction("AboutQt", helpMenu);
87     QAction *showLogo = new QAction("Show 3D Logo", showMenu);
88     QAction *showTexture = new QAction("Show 2D Texture", showMenu);
89     QAction *showBubbles = new QAction("Show bubbles", showMenu);
90     showBubbles->setCheckable(true);
91     showBubbles->setChecked(true);
92     fileMenu->addAction(exit);
93     helpMenu->addAction(aboutQt);
94     showMenu->addAction(showLogo);
95     showMenu->addAction(showTexture);
96     showMenu->addAction(showBubbles);
97 
98     QObject::connect(timer, SIGNAL(timeout()), glwidget, SLOT(updateGL()));
99     QObject::connect(exit, SIGNAL(triggered(bool)), this, SLOT(close()));
100     QObject::connect(aboutQt, SIGNAL(triggered(bool)), qApp, SLOT(aboutQt()));
101 
102     QObject::connect(showLogo, SIGNAL(triggered(bool)), glwidget, SLOT(setLogo()));
103     QObject::connect(showTexture, SIGNAL(triggered(bool)), glwidget, SLOT(setTexture()));
104     QObject::connect(showBubbles, SIGNAL(triggered(bool)), glwidget, SLOT(showBubbles(bool)));
105     QObject::connect(slider, SIGNAL(valueChanged(int)), glwidget, SLOT(setScaling(int)));
106     timer->start();
107 }
108