touch screen handler for the microchip AR1020

Revision:
1:264ad2a00fd9
Child:
3:b7eb3b3fe79f
diff -r cf4dd04052e3 -r 264ad2a00fd9 AreaTouchHandler.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AreaTouchHandler.cpp	Tue Feb 22 21:43:39 2011 +0000
@@ -0,0 +1,85 @@
+/*
+* mbed AR1020 library
+* Copyright (c) 2010 Hendrik Lipka
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*/
+
+#include "AreaTouchHandler.h"
+#include "touchevent.h"
+
+using namespace std;
+
+uint32_t AreaTouchHandler::down(uint32_t arg)
+{
+    TouchEvent *te=(TouchEvent*)arg;
+    _x=te->x;
+    _y=te->y;
+    _samples=1;
+    int c=findCommand();
+    _called=false;
+    if (0!=c)
+    {
+        _called=true;
+        _callback.call(c);
+    }
+    return 0;
+}
+uint32_t AreaTouchHandler::move(uint32_t arg)
+{
+    if (_called)
+        return 0;
+    TouchEvent *te=(TouchEvent*)arg;
+    printf("%i\n",te->y);
+    _x=(te->x+_x*_samples)/(_samples+1);
+    _y=(te->y+_y*_samples)/(_samples+1);
+    _samples++;
+    int c=findCommand();
+    if (0!=c)
+    {
+        _called=true;
+        _callback.call(c);
+    }
+    return 0;
+}
+uint32_t AreaTouchHandler::up(uint32_t arg)
+{
+    printf("up\n");
+    _x=0;
+    _y=0;
+    _samples=0;
+    _called=false;
+    return 0;
+}
+
+int AreaTouchHandler::findCommand()
+{
+    if (_called)
+        return 0;
+    if (_samples<3)
+        return 0;
+    printf("%f\n",_y);
+    for (list<area*>::iterator it = _areas.begin(); it != _areas.end(); it++) {
+        area* a=*it;
+        if (_x>=a->left && _x<=a->right && _y>=a->top && _y<=a->bottom)
+            return a->command;
+        }
+    printf(".\n");
+    return 0;
+}