I finally figured this issue out! I kept coming back to it with no luck, but I
finally figured out that Qt was capturing all my events before the viewer had
the chance to intercept them. The below code works perfectly!
Code:
#include <QWidget> //must include before any x11
#ifdef WIN32
#include <QWidget>
#include <osgViewer/api/Win32/GraphicsWindowWin32>
#define OSG_PLATFORM_WINDOW osgViewer::GraphicsWindowWin32
#define WINDOW_HANDLE HWND
#else
#include <osgViewer/api/X11/GraphicsWindowX11>
#define OSG_PLATFORM_WINDOW osgViewer::GraphicsWindowX11
#define WINDOW_HANDLE Window
#include <X11/extensions/XInput2.h>
#include <QtX11Extras/QX11Info>
#endif
osg::GraphicsContext::Traits* createWindowTraits(QWidget* OwningWidget)
{
auto traits = new osg::GraphicsContext::Traits();
traits->x = OwningWidget->x();
traits->y = OwningWidget->y();
traits->width = OwningWidget->size().width();
traits->height = OwningWidget->size().height();
traits->doubleBuffer = true;
if (OwningWidget)
{
OSG_PLATFORM_WINDOW::WindowData* data = new
OSG_PLATFORM_WINDOW::WindowData(OwningWidget->winId());
traits->inheritedWindowData = data;
}
return traits;
}
void setOwningWidgetOnGraphicsContext(QWidget* widget, osg::GraphicsContext*
context)
{
#ifdef __GNUC__
auto bmwindow = dynamic_cast<osgViewer::GraphicsWindowX11*>(context);
//Clear the event mask. We don't want Qt stealing our events, let OSG have
them
XSetWindowAttributes swatt;
swatt.event_mask = 0;
XChangeWindowAttributes(QX11Info::display(), widget->winId(), CWEventMask,
&swatt);
//XI2 Mouse Events
int n;
XIEventMask *xi_masks = XIGetSelectedEvents( QX11Info::display(),
widget->winId(), &n );
if( xi_masks != nullptr )
{
for( int i = 0; i < n; i++ )
if( xi_masks[i].mask_len >= 1 )
{
xi_masks[i].mask[0] &= ~XI_ButtonPressMask;
xi_masks[i].mask[0] &= ~XI_ButtonReleaseMask;
xi_masks[i].mask[0] &= ~XI_MotionMask;
}
XISelectEvents( QX11Info::display(), widget->winId(), xi_masks, n );
XFree( xi_masks );
}
//Now subscribe for ourselves
XSelectInput( bmwindow->getEventDisplay(), widget->winId(), ExposureMask |
StructureNotifyMask |
KeyPressMask | KeyReleaseMask |
PointerMotionMask | ButtonPressMask | ButtonReleaseMask |
KeymapStateMask | FocusChangeMask | EnterWindowMask );
XFlush( bmwindow->getEventDisplay() );
XSync( bmwindow->getEventDisplay(), 0 );
#endif
}
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=76821#76821
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