AreaTouchHandler.cpp

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 #include "AreaTouchHandler.h"
00025 #include "touchevent.h"
00026 
00027 using namespace std;
00028 
00029 class area
00030 {
00031     public:
00032     int top,bottom,left,right,command;
00033     area(int top, int bottom, int left, int right, int command)
00034     {
00035         this->top=top;
00036         this->bottom=bottom;
00037         this->left=left;
00038         this->right=right;
00039         this->command=command;
00040     }
00041 };
00042 
00043 AreaTouchHandler::AreaTouchHandler(TouchPanel* panel)
00044 {
00045     panel->attachPenDown(this,&AreaTouchHandler::down);
00046     panel->attachPenMove(this,&AreaTouchHandler::move);
00047     panel->attachPenUp(this,&AreaTouchHandler::up);
00048 }
00049 
00050 void AreaTouchHandler::addArea(int top, int bottom, int left, int right, int commandCode)
00051 {
00052     _areas.push_back(new area(top,bottom,left,right,commandCode));
00053 }
00054 
00055 uint32_t AreaTouchHandler::down(uint32_t arg)
00056 {
00057     TouchEvent *te=(TouchEvent*)arg;
00058 //    printf("d %i/%i\n",te->x,te->y);
00059     _x=te->x;
00060     _y=te->y;
00061     _samples=1;
00062     int c=findCommand();
00063     _called=false;
00064     if (0!=c)
00065     {
00066         _called=true;
00067         _callback.call(c);
00068     }
00069     return 0;
00070 }
00071 uint32_t AreaTouchHandler::move(uint32_t arg)
00072 {
00073     if (_called)
00074         return 0;
00075     TouchEvent *te=(TouchEvent*)arg;
00076 //    printf("m %i/%i\n",te->x,te->y);
00077     _x=(te->x+_x*_samples)/(_samples+1);
00078     _y=(te->y+_y*_samples)/(_samples+1);
00079     _samples++;
00080     int c=findCommand();
00081     if (0!=c)
00082     {
00083         _called=true;
00084         _callback.call(c);
00085     }
00086     return 0;
00087 }
00088 uint32_t AreaTouchHandler::up(uint32_t arg)
00089 {
00090     _x=0;
00091     _y=0;
00092     _samples=0;
00093     _called=false;
00094     return 0;
00095 }
00096 
00097 int AreaTouchHandler::findCommand()
00098 {
00099     if (_called)
00100         return 0;
00101     if (_samples<5)
00102         return 0;
00103     for (list<area*>::iterator it = _areas.begin(); it != _areas.end(); it++) {
00104         area* a=*it;
00105         if (_x>=a->left && _x<=a->right && _y>=a->top && _y<=a->bottom)
00106             return a->command;
00107         }
00108     return 0;
00109 }