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////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include "QSFMLCanvas.hpp"
#include <QEvent>
// Platform-specific headers
#ifdef Q_WS_X11
#include <Qt/qx11info_x11.h>
#include <X11/Xlib.h>
#endif
////////////////////////////////////////////////////////////
/// Construct the QSFMLCanvas
////////////////////////////////////////////////////////////
QSFMLCanvas::QSFMLCanvas(const QSize& Size, unsigned int FrameTime, QWidget* Parent) :
QWidget(Parent)
{
// Resize the widget
resize(Size);
// Setup some states to allow direct rendering into the widget
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_OpaquePaintEvent);
setAttribute(Qt::WA_NoSystemBackground);
// Set strong focus to enable keyboard events to be received
setFocusPolicy(Qt::StrongFocus);
// Setup the timer
myTimer.setInterval(FrameTime);
}
////////////////////////////////////////////////////////////
/// Destructor
////////////////////////////////////////////////////////////
QSFMLCanvas::~QSFMLCanvas()
{
// Nothing to do...
}
////////////////////////////////////////////////////////////
/// Notification for the derived class that moment is good
/// for doing initializations
////////////////////////////////////////////////////////////
void QSFMLCanvas::OnInit()
{
// Nothing to do by default...
}
////////////////////////////////////////////////////////////
/// Notification for the derived class that moment is good
/// for doing its update and drawing stuff
////////////////////////////////////////////////////////////
void QSFMLCanvas::OnUpdate()
{
// Nothing to do by default...
}
////////////////////////////////////////////////////////////
/// Return the paint engine used by the widget to draw itself
////////////////////////////////////////////////////////////
QPaintEngine* QSFMLCanvas::paintEngine() const
{
return 0;
}
////////////////////////////////////////////////////////////
/// Called each time an event is received by the widget ;
/// we use it to catch the Polish event and initialize
/// our SFML window
////////////////////////////////////////////////////////////
bool QSFMLCanvas::event(QEvent* Event)
{
if (Event->type() == QEvent::Polish)
{
// Under X11, we need to flush the commands sent to the server to ensure that
// SFML will get an updated view of the windows
#ifdef Q_WS_X11
XFlush(QX11Info::display());
#endif
// Create the SFML window with the widget handle
Create(winId());
// Let the derived class do its specific stuff
OnInit();
// Setup the timer to trigger a refresh at specified framerate
connect(&myTimer, SIGNAL(timeout()), this, SLOT(repaint()));
myTimer.start();
}
return QWidget::event(Event);
}
////////////////////////////////////////////////////////////
/// Called when the widget needs to be painted ;
/// we use it to display a new frame
////////////////////////////////////////////////////////////
void QSFMLCanvas::paintEvent(QPaintEvent*)
{
// Let the derived class do its specific stuff
OnUpdate();
// Display on screen
Display();
}
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