The Nebula Device 3: Input::InputHandler Class Reference

The Nebula Device 3

Input::InputHandler Class Reference

#include <inputhandler.h>

Inheritance diagram for Input::InputHandler:

Core::RefCounted Base::GamePadBase Base::KeyboardBase Base::MouseBase XInput::XInputGamePad Input::Keyboard Win32::Win32Mouse Input::GamePad Input::Mouse


Detailed Description

Input handlers receive and process input events. Handlers are chained together, sorted by priority, and input events travel from one handler to the next. Input events may be blocked by an input handler, so that the blocked events are not passed on to the next lower-priority handlers. Subclasses of InputHandler present the received input in more specific ways.

(C) 2007 Radon Labs GmbH

Public Member Functions

 InputHandler ()
 constructor
virtual ~InputHandler ()
 destructor
bool IsAttached () const
 return true if the input handler is currently attached
virtual void BeginCapture ()
 capture input to this event handler
virtual void EndCapture ()
 end input capturing to this event handler
bool IsCapturing () const
 return true if this input handler captures input
int GetRefCount () const
 get the current refcount
void AddRef ()
 increment refcount by one
void Release ()
 decrement refcount and destroy object if refcount is zero
bool IsInstanceOf (const Rtti &rtti) const
 return true if this object is instance of given class
bool IsInstanceOf (const Util::String &className) const
 return true if this object is instance of given class by string
bool IsInstanceOf (const Util::FourCC &classFourCC) const
 return true if this object is instance of given class by fourcc
bool IsA (const Rtti &rtti) const
 return true if this object is instance of given class, or a derived class
bool IsA (const Util::String &rttiName) const
 return true if this object is instance of given class, or a derived class, by string
bool IsA (const Util::FourCC &rttiFourCC) const
 return true if this object is instance of given class, or a derived class, by fourcc
const Util::StringGetClassName () const
 get the class name
Util::FourCC GetClassFourCC () const
 get the class FourCC code

Static Public Member Functions

static void DumpRefCountingLeaks ()
 dump refcounting leaks, call at end of application (NEBULA3_DEBUG builds only!)

Protected Member Functions

virtual void OnAttach ()
 called when the handler is attached to the input server
virtual void OnRemove ()
 called when the handler is removed from the input server
virtual void OnBeginFrame ()
 called on InputServer::BeginFrame()
virtual void OnEndFrame ()
 called on InputServer::EndFrame();
virtual void OnObtainCapture ()
 called when input handler obtains capture
virtual void OnReleaseCapture ()
 called when input handler looses capture
virtual bool OnEvent (const InputEvent &inputEvent)
 called when an input event should be processed
virtual void OnReset ()
 called when the handler should reset itself

Member Function Documentation

void Input::InputHandler::BeginCapture (  )  [virtual]

capture input to this event handler

Begin capturing input to this input handler. This method must be overriden in a subclass, the derived method must call ObtainMouseCapture(), ObtainKeyboardCapture(), or both, depending on what type input events you want to capture. An input handler which captures input gets all input events of the given type exclusively.

Reimplemented in Base::KeyboardBase, and Base::MouseBase.

void Input::InputHandler::EndCapture (  )  [virtual]

end input capturing to this event handler

End capturing input to this input handler. Override this method in a subclass and release the captures obtained in BeginCapture().

Reimplemented in Base::KeyboardBase, and Base::MouseBase.

void Input::InputHandler::OnReset (  )  [protected, virtual]

called when the handler should reset itself

OnReset is called when the app loses or gains focus (amongst other occasions). The input handler should reset its internal state to prevent keys from sticking down, etc...

Reimplemented in Base::GamePadBase, Base::KeyboardBase, and Base::MouseBase.

int Core::RefCounted::GetRefCount (  )  const [inline, inherited]

get the current refcount

Return the current refcount of the object.

void Core::RefCounted::AddRef (  )  [inline, inherited]

increment refcount by one

Increment the refcount of the object.

void Core::RefCounted::Release (  )  [inline, inherited]

decrement refcount and destroy object if refcount is zero

Decrement the refcount and destroy object if refcount is zero.

const Util::String & Core::RefCounted::GetClassName (  )  const [inline, inherited]

get the class name

Get the class name of the object.

Util::FourCC Core::RefCounted::GetClassFourCC (  )  const [inline, inherited]

get the class FourCC code

Get the class FourCC of the object.

void Core::RefCounted::DumpRefCountingLeaks (  )  [static, inherited]

dump refcounting leaks, call at end of application (NEBULA3_DEBUG builds only!)

This method should be called as the very last before an application exits.