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add option <grab/> to the device configuration. If this is set to 'true', the events from this devices are exclusively handled by our handler and are not distributed to other driver(s).

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This commit is contained in:
torsten 2009-08-22 08:32:36 +00:00 committed by Tim Moore
parent cd89ce7d0a
commit b772e5872a
3 changed files with 19 additions and 2 deletions
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1
src/Input/FGEventInput.cxx
View file

@ -276,6 +276,7 @@ void FGEventInput::AddDevice( FGInputDevice * inputDevice )
inputDevice->AddHandledEvent( FGInputEvent::NewObject( inputDevice, *it ) );
inputDevice->SetDebugEvents( deviceNode->getBoolValue("debug-events", inputDevice->GetDebugEvents() ));
inputDevice->SetGrab( deviceNode->getBoolValue("grab", inputDevice->GetGrab() ));
// TODO:
// add nodes for the last event:

9
src/Input/FGEventInput.hxx
View file

@ -164,7 +164,7 @@ typedef class SGSharedPtr<FGInputEvent> FGInputEvent_ptr;
*/
class FGInputDevice : public SGReferenced {
public:
FGInputDevice() : debugEvents(false) {}
FGInputDevice() : debugEvents(false), grab(false) {}
FGInputDevice( string aName ) : name(aName) {}
virtual ~FGInputDevice();
@ -196,6 +196,9 @@ public:
bool GetDebugEvents () const { return debugEvents; }
void SetDebugEvents( bool value ) { debugEvents = value; }
bool GetGrab() const { return grab; }
void SetGrab( bool value ) { grab = value; }
private:
// A map of events, this device handles
map<string,FGInputEvent_ptr> handledEvents;
@ -206,6 +209,10 @@ private:
// print out events comming in from the device
// if true
bool debugEvents;
// grab the device exclusively, if O/S supports this
// so events are not sent to other applications
bool grab;
};
typedef SGSharedPtr<FGInputDevice> FGInputDevice_ptr;

11
src/Input/FGLinuxEventInput.cxx
View file

@ -251,11 +251,20 @@ void FGLinuxInputDevice::Open()
if( (fd = ::open( devname.c_str(), O_RDWR )) == -1 ) {
throw exception();
}
if( GetGrab() && ioctl( fd, EVIOCGRAB, 2 ) != 0 ) {
SG_LOG( SG_INPUT, SG_WARN, "Can't grab " << devname << " for exclusive access" );
}
}
void FGLinuxInputDevice::Close()
{
if( fd != -1 ) ::close(fd);
if( fd != -1 ) {
if( GetGrab() && ioctl( fd, EVIOCGRAB, 0 ) != 0 ) {
SG_LOG( SG_INPUT, SG_WARN, "Can't ungrab " << devname );
}
::close(fd);
}
fd = -1;
}