PG_EventSupplier Class Reference

Inheritance diagram for PG_EventSupplier:

[legend]List of all members.

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Detailed Description

Interface for classes that supply SDL_Events to Paragui.

Author:

Martin Bickel

Paragui works with SDL_Events to obtain input and operating system events. Instead of getting them directly from SDL it uses this interface, allowing the application to preprocess SDL_events or obtain them from an application specific event source.

Public Member Functions
virtual	~PG_EventSupplier ()
virtual bool	PollEvent (SDL_Event *event)=0
	Polls for currently pending events, and returns true if there are any pending events, or false if there are none available.
virtual bool	PeepEvent (SDL_Event *event)=0
	Checks if an event is in the queue.
virtual int	WaitEvent (SDL_Event *event)=0
	Waits indefinitely for the next available event.
virtual int	GetMouseState (int &x, int &y)=0
	Get the current mouse position.

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Constructor & Destructor Documentation

virtual PG_EventSupplier::~PG_EventSupplier (   )  [inline, virtual]

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Member Function Documentation

virtual int PG_EventSupplier::GetMouseState (  int &  x, int &  y )  [pure virtual]

Get the current mouse position. Parameters: x  current mouse x position y  current mouse y position Returns: bitmap of pressed mouse buttons Implemented in PG_SDLEventSupplier.

virtual bool PG_EventSupplier::PeepEvent (  SDL_Event *  event  )  [pure virtual]

Checks if an event is in the queue. If there is, it will be copied into the event structure, WITHOUT being removed from the event queue. Parameters: event  pointer to an event structure Returns: true - events are available Implemented in PG_SDLEventSupplier.

virtual bool PG_EventSupplier::PollEvent (  SDL_Event *  event  )  [pure virtual]

Polls for currently pending events, and returns true if there are any pending events, or false if there are none available. If event is not NULL, the next event is removed from the queue and stored in that area. Parameters: event  pointer to an event structure Returns: true - events are available Implemented in PG_SDLEventSupplier.

virtual int PG_EventSupplier::WaitEvent (  SDL_Event *  event  )  [pure virtual]

Waits indefinitely for the next available event. Parameters: event  pointer to an event structure Returns: return 0 if there was an error while waiting for events Implemented in PG_SDLEventSupplier.

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