Image Manager/Cvb++/QmlStreamDisplay

This example program is located in your CVB installation under %CVB%Tutorial/Image Manager/Cvb++/QmlStreamDisplay.

main.cpp:

// The QmlStreamDisplay example shows an image in a Qt display. With mouse over the pixel data are
// shown.
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
#include <iostream>
 
 
 
 
 
 
 
 
 
 
#include <QApplication>
#include <QQuickView>
#include <QQmlContext>
#include <QIcon>
 
 
 
 
 
 
#include <cvb/ui/image_view_item.hpp>
#include <cvb/device_factory.hpp>
#include <cvb/image.hpp>
#include <cvb/async/single_stream_handler.hpp>
 
int main(int argc, char* argv[])
{
  try
  {
 
    QApplication app(argc, argv);
 
    // register QML components for an image display
    Cvb::UI::ImageViewItem::Register();
 
    QQuickView view;
    view.setResizeMode(QQuickView::SizeRootObjectToView);
    view.setIcon(QIcon(":/qttutorial.png"));
    auto context = view.rootContext();
    // create a controller object to communicate with QML
    Cvb::UI::ImageController imageController;
    context->setContextProperty("mainImage", &imageController);
 
    // load main QML file
    view.setSource(QUrl::fromLocalFile("../main.qml"));
 
    // open a device
    auto device = Cvb::DeviceFactory::Open(Cvb::InstallPath() + CVB_LIT("drivers/CVMock.vin"), Cvb::AcquisitionStack::Vin);
 
    // refresh the image display through the controller object
    imageController.Refresh(device->DeviceImage(), Cvb::UI::AutoRefresh::On);
 
    // get the first stream of the device
    // or use device->Stream(index) to get another stream
    auto stream = device->Stream();
 
    // create an acquisition handler for that stream and run it.
    // Actually the guard starts it, and will finish it when destructed.
 
    // There are two ways to run the acquisition:
    // - Either via stream->Start() and stream->Wait() in a separate thread
    // - or via SingleStreamHandler (Run() / Finish())
    Cvb::StreamHandlerGuard<Cvb::Stream> guard(Cvb::SingleStreamHandler::Create(stream), Cvb::AutoRun::Yes);
 
 
    view.resize(640, 480);
    view.show();
 
 
 
    return app.exec();
  }
  catch (const std::exception& error)
  {
    std::cout << error.what() << std::endl;
  }
}