int main(int argc, char **argv)
{
QApplication app(argc, argv);
if ((QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_1_5) == 0) {
QMessageBox::critical(0, "OpenGL features missing",
"OpenGL version 1.5 or higher is required to run this demo.\n"
"The program will now exit.");
return -1;
}
int maxTextureSize = 1024;
QGLWidget *widget = new QGLWidget(QGLFormat(QGL::SampleBuffers));
widget->makeCurrent();
if (!necessaryExtensionsSupported()) {
QMessageBox::critical(0, "OpenGL features missing",
"The OpenGL extensions required to run this demo are missing.\n"
"The program will now exit.");
delete widget;
return -2;
}
// Check if all the necessary functions are resolved.
if (!getGLExtensionFunctions().resolve(widget->context())) {
QMessageBox::critical(0, "OpenGL features missing",
"Failed to resolve OpenGL functions required to run this demo.\n"
"The program will now exit.");
delete widget;
return -3;
}
// TODO: Make conditional for final release
QMessageBox::information(0, "For your information",
"This demo can be GPU and CPU intensive and may\n"
"work poorly or not at all on your system.");
widget->makeCurrent(); // The current context must be set before calling Scene's constructor
Scene scene(1024, 768, maxTextureSize);
GraphicsView view;
view.setViewport(widget);
view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
view.setScene(&scene);
view.show();
return app.exec();
}
int emscriptenQtSDLMain(int argc, char *argv[])
#endif
{
QApplication *app = new QApplication(argc, argv);
qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
//! [0]
//! [1]
QGraphicsScene *scene = new QGraphicsScene(-200, -200, 400, 400);
for (int i = 0; i < 10; ++i) {
ColorItem *item = new ColorItem;
item->setPos(::sin((i * 6.28) / 10.0) * 150,
::cos((i * 6.28) / 10.0) * 150);
scene->addItem(item);
}
Robot *robot = new Robot;
robot->scale(1.2, 1.2);
robot->setPos(0, -20);
scene->addItem(robot);
//! [1]
//! [2]
GraphicsView *view = new GraphicsView(scene);
view->setRenderHint(QPainter::Antialiasing);
view->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
view->setBackgroundBrush(QColor(230, 200, 167));
view->setWindowTitle("Drag and Drop Robot");
#if defined(Q_OS_SYMBIAN)
view->showMaximized();
#else
view->show();
#endif
return app->exec();
}