117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
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/**
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* @file NexTouch.h
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*
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* The definition of class NexTouch.
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*
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* @author Wu Pengfei (email:<pengfei.wu@itead.cc>)
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* @date 2015/8/13
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*
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* @copyright
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* Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd. \n
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#ifndef __NEXTOUCH_H__
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#define __NEXTOUCH_H__
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#include <Arduino.h>
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#include "NexConfig.h"
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#include "NexObject.h"
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/**
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* @addtogroup TouchEvent
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* @{
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*/
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/**
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* Push touch event occuring when your finger or pen coming to Nextion touch pannel.
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*/
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#define NEX_EVENT_PUSH (0x01)
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/**
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* Pop touch event occuring when your finger or pen leaving from Nextion touch pannel.
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*/
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#define NEX_EVENT_POP (0x00)
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/**
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* Type of callback funciton when an touch event occurs.
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*
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* @param ptr - user pointer for any purpose. Commonly, it is a pointer to a object.
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* @return none.
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*/
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typedef void (*NexTouchEventCb)(void *ptr);
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/**
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* Father class of the components with touch events.
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*
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* Derives from NexObject and provides methods allowing user to attach
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* (or detach) a callback function called when push(or pop) touch event occurs.
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*/
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class NexTouch: public NexObject
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{
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public: /* static methods */
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static void iterate(NexTouch **list, uint8_t pid, uint8_t cid, int32_t event);
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public: /* methods */
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/**
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* @copydoc NexObject::NexObject(uint8_t pid, uint8_t cid, const char *name);
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*/
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NexTouch(uint8_t pid, uint8_t cid, const char *name);
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/**
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* Attach an callback function of push touch event.
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*
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* @param push - callback called with ptr when a push touch event occurs.
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* @param ptr - parameter passed into push[default:NULL].
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* @return none.
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*
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* @note If calling this method multiply, the last call is valid.
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*/
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void attachPush(NexTouchEventCb push, void *ptr = NULL);
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/**
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* Detach an callback function.
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*
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* @return none.
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*/
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void detachPush(void);
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/**
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* Attach an callback function of pop touch event.
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*
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* @param pop - callback called with ptr when a pop touch event occurs.
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* @param ptr - parameter passed into pop[default:NULL].
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* @return none.
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*
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* @note If calling this method multiply, the last call is valid.
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*/
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void attachPop(NexTouchEventCb pop, void *ptr = NULL);
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/**
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* Detach an callback function.
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*
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* @return none.
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*/
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void detachPop(void);
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private: /* methods */
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void push(void);
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void pop(void);
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private: /* data */
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NexTouchEventCb __cb_push;
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void *__cbpush_ptr;
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NexTouchEventCb __cb_pop;
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void *__cbpop_ptr;
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};
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/**
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* @}
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*/
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#endif /* #ifndef __NEXTOUCH_H__ */
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