Messages

1

Window / Re: SFML Events in Qt creator

« on: April 23, 2014, 10:46:07 am »

Hello I have a problem that I think is similar.

I have a sfml window as the central window of my MainWindow and i want my sfml window to handle the mouse events but it seems that sfml receive all the events : mouseMoved, keyPressed, even joystick events but not buttonPressedEvent. The Qt widget receive them but not the sfml window.

here's my code :

SfmlWidget::SfmlWidget(QWidget *parent, frameTime) :
    QWidget(parent),
    myInitialized(false)
{

    setAttribute(Qt::WA_PaintOnScreen);
    setAttribute(Qt::WA_OpaquePaintEvent);
    setAttribute(Qt::WA_NoSystemBackground);
    setFocusPolicy(Qt::StrongFocus);

    myTimer.setInterval(frameTime);
}

SfmlWidget::~SfmlWidget() {}

#ifdef Q_WS_X11
    #include <Qt/qx11info_x11.h>
    #include <X11/Xlib.h>
#endif

void SfmlWidget::showEvent(QShowEvent *)
{
    if (!myInitialized)
    {
        //si X11
        #ifdef Q_WS_X11
            XFlush(QX11Info::display());
        #endif

        sf::RenderWindow::create(winId());

        onInit();

        connect(&myTimer, SIGNAL(timeout()), this ,SLOT(repaint()));
        myTimer.start();

        myInitialized = true;
    }
}

void SfmlWidget::onInit()
{
    // Nothing to do by default...
}

void SfmlWidget::onUpdate()
{
    // Nothing to do by default...
}

QPaintEngine* SfmlWidget::paintEngine() const
{
    return 0;
}

void SfmlWidget::paintEvent(QPaintEvent *)
{
    onUpdate();
    window->display();
}

void MapWidget::mousePressEvent(QMouseEvent * event)
{
    std::cerr << "mouse pressed Qt "; //Even handled correctly by Qt
}
 

The smfl window which only handle events and print an image

#include <SFML/Graphics.hpp>
#include <iostream>
#include "testsfml.h"

testSfml::testSfml() :
    sf::RenderWindow()
{
    // I set the image to print
}

void testSfml::onInit()
{
    clear();
    displayAll();
    display();
}

void testSfml::onUpdate()
{
    sf::Event event;
    while (pollEvent(event)) {
        switch(event.type)
        {
            case (sf::Event::Closed) :
                close();
                break;

            case (sf::Event::MouseButtonPressed) :
            std::cerr << "mouse clicked"; // Event never handled
                mousePressedEventHandling(event);
                break;
            case (sf::Event::MouseMoved) :
            std::cerr << "mouse moved"; // Event handled
                mouseMovedEventHandling(event);
                break;
            case (sf::Event::KeyPressed) :
            std::cerr << "key pressed"; // Event handled
                break;
            case (sf::Event::JoystickButtonPressed) :
                std::cerr << "joystick "; // Event handled
                break;
            default:
                break;
        }

    }
    display();
}
 

the main :

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    MainWindow* window = new MainWindow();
    SfmlWidget* wid = new SfmlWidget(window, 60);
    window->setCentralWidget(wid);
    window->show();
    return app.exec();
}