axmol/cocos2dx/touch_dispatcher/CCTouchDelegateProtocol.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2009      Valentin Milea

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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#ifndef __TOUCH_DISPATHCHER_CCTOUCH_DELEGATE_PROTOCOL_H__
#define __TOUCH_DISPATHCHER_CCTOUCH_DELEGATE_PROTOCOL_H__

#include "cocoa/CCObject.h"
#include "ccConfig.h"

NS_CC_BEGIN

class Touch;
class Event;
class Set;
class TouchDispatcher;

/**
 * @addtogroup input
 * @{
 */

class CC_DLL TouchDelegate
{
public:

    TouchDelegate() {}

    virtual ~TouchDelegate()
    {
    }

    virtual bool ccTouchBegan(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent); return false;};
    // optional

    virtual void ccTouchMoved(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}
    virtual void ccTouchEnded(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}
    virtual void ccTouchCancelled(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}

    // optional
     virtual void ccTouchesBegan(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchesMoved(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchesEnded(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchesCancelled(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}

};
/**
 @brief
 Using this type of delegate results in two benefits:
 - 1. You don't need to deal with Sets, the dispatcher does the job of splitting
 them. You get exactly one UITouch per call.
 - 2. You can *claim* a UITouch by returning true in ccTouchBegan. Updates of claimed
 touches are sent only to the delegate(s) that claimed them. So if you get a move/
 ended/canceled update you're sure it's your touch. This frees you from doing a
 lot of checks when doing multi-touch. 

 (The name TargetedTouchDelegate relates to updates "targeting" their specific
 handler, without bothering the other handlers.)
 @since v0.8
 */
 class CC_DLL TargetedTouchDelegate : public TouchDelegate
 {
 public:
     /** Return true to claim the touch.
      @since v0
     */
     virtual bool ccTouchBegan(Touch *pTouch, Event *pEvent) { CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);return false;};
 
     // optional
     virtual void ccTouchMoved(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchEnded(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchCancelled(Touch *pTouch, Event *pEvent) {CC_UNUSED_PARAM(pTouch); CC_UNUSED_PARAM(pEvent);}
 };
 
/** @brief
 This type of delegate is the same one used by CocoaTouch. You will receive all the events (Began,Moved,Ended,Canceled).
 @since v0.8
 */
 class CC_DLL StandardTouchDelegate : public TouchDelegate
 {
 public:
     // optional
     virtual void ccTouchesBegan(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchesMoved(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
     virtual void ccTouchesEnded(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
    virtual void ccTouchesCancelled(Set *pTouches, Event *pEvent) {CC_UNUSED_PARAM(pTouches); CC_UNUSED_PARAM(pEvent);}
 };

// end of input group
/// @}

NS_CC_END

#endif // __TOUCH_DISPATHCHER_CCTOUCH_DELEGATE_PROTOCOL_H__