touchpanel.h

00001 /*
00002 * mbed AR1020 library
00003 * Copyright (c) 2010 Hendrik Lipka
00004 *
00005 * Permission is hereby granted, free of charge, to any person obtaining a copy
00006 * of this software and associated documentation files (the "Software"), to deal
00007 * in the Software without restriction, including without limitation the rights
00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 * copies of the Software, and to permit persons to whom the Software is
00010 * furnished to do so, subject to the following conditions:
00011 *
00012 * The above copyright notice and this permission notice shall be included in
00013 * all copies or substantial portions of the Software.
00014 *
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 * THE SOFTWARE.
00022 */
00023 
00024 #ifndef __TOUCHPANEL_H_
00025 #define __TOUCHPANEL_H_
00026 
00027 #include "FPointer.h"
00028 
00029 class TouchPanel
00030  {
00031     public:
00032         /**
00033             initialize the controller
00034         */
00035         virtual void init()=0;
00036         
00037         /**
00038             read X coordinate (from last update)
00039             @returns last known X coordinate
00040         */
00041         virtual int x()=0;
00042         /**
00043             read Y coordinate (from last update)
00044             @returns last known Y coordinate
00045         */
00046         virtual int y()=0;
00047         
00048         /**
00049             @return 0 if pen is up, >0 if pen is down (maybe different due to touch pressure, if supported)
00050         */
00051         virtual int pen()=0;
00052         
00053         /**
00054             read coordinates on request
00055         */
00056         virtual void read()=0;
00057         
00058         class T;
00059         
00060         /**
00061             attach listener called on 'pen-down'
00062             @params item the callback object
00063             @params method the callback method
00064         */
00065         template<class T> 
00066         void attachPenDown(T* item, uint32_t (T::*method)(uint32_t)) { _callbackPD.attach(item, method); }   
00067         /**
00068             attach listener called on 'pen-down'
00069             @params function the callback function
00070         */
00071         void attachPenDown(uint32_t (*function)(uint32_t)) { _callbackPD.attach(function); }   
00072         /**
00073             attach listener called on 'pen-move'
00074             @params item the callback object
00075             @params method the callback method
00076         */
00077         template<class T> 
00078         void attachPenMove(T* item, uint32_t (T::*method)(uint32_t)) { _callbackPM.attach(item, method); }   
00079         /**
00080             attach listener called on 'pen-move'
00081             @params function the callback function
00082         */
00083         void attachPenMove(uint32_t (*function)(uint32_t)) { _callbackPM.attach(function); }   
00084         /**
00085             attach listener called on 'pen-up'
00086             @params item the callback object
00087             @params method the callback method
00088         */
00089         template<class T> 
00090         void attachPenUp(T* item, uint32_t (T::*method)(uint32_t)) { _callbackPU.attach(item, method); }   
00091         /**
00092             attach listener called on 'pen-up'
00093             @params function the callback function
00094         */
00095         void attachPenUp(uint32_t (*function)(uint32_t)) { _callbackPU.attach(function); }   
00096         
00097     protected:
00098         FPointer      _callbackPD;
00099         FPointer      _callbackPM;
00100         FPointer      _callbackPU;
00101  };
00102 
00103 
00104 #endif