BrailleTutorNS::ShortStylusSuppressor Class Reference

Filters out spurious stylus-related BaseIOEvents. More...

#include <ShortStylusSuppressor.h>

Inheritance diagram for BrailleTutorNS::ShortStylusSuppressor:

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Collaboration diagram for BrailleTutorNS::ShortStylusSuppressor:

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List of all members.

Public Member Functions
	ShortStylusSuppressor (const TimeInterval &threshold=0.75)
	Constructor.
void	setBaseIOEventHandler (BaseIOEventHandler &bioeh)
	Register a BaseIOEventHandler with this ShortStylusSuppressor.
void	pollBaseIOEvents (BaseIOEventHandler &bioeh)
	Call a BaseIOEventHandler functor on the events list immediately.
void	setThreshold (const TimeInterval &threshold)
	Set the minimum insertion/withdrawal-time threshold for stylus events.
virtual void	operator() (std::deque< BaseIOEvent > &events)
	BaseIOEvent handler callback.
virtual	~ShortStylusSuppressor ()
	Destructor.

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Detailed Description

Filters out spurious stylus-related BaseIOEvents.

Some BrailleTutors generate spurious stylus events---when hands are rubbed across the Tutor, for example, or when a stylus is being inserted or removed and makes weak electrical contact. These spurious events are typically pretty short. A ShortStylusSuppressor will filter stylus-related BaseIOEvents where the delay between STYLUS_DOWN and STYLUS_UP is too brief to have been real. All other BaseIOEvents are passed through. See additional note in ShortStylusSuppressor.h

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The documentation for this class was generated from the following file:

• /Users/tom/usr/src/BrailleTutor-0.7/extras/ShortStylusSuppressor.h

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