/* $Id: plugin_test.c,v 1.1 2004/06/07 06:56:55 reinelt Exp $
*
* Handy functions for testing displays and debugging code.
*
* Copyright 2004 Andy Baxter.
* Based on sample plugin by:
*
* Copyright 2003 Michael Reinelt <reinelt@eunet.at>
* Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: plugin_test.c,v $
* Revision 1.1  2004/06/07 06:56:55  reinelt
*
* added test plugin from Andy Baxter
*
*/

int plugin_init_test (void);

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ctype.h>

#include "debug.h"
#include "plugin.h"

#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif


// used for testing bars - keeps values for a series of 10 bars,
// which are incremented and decremented between 0 and rmax by
// amount rdelta every time they are read. Starting value is rstart.
// rbar gives the number of the test bar.
static void my_test_bar (RESULT *result, RESULT *rbar, RESULT *rmax,
			 RESULT *rstart, RESULT *rdelta)
{
  static double values[10]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
  static double deltas[10];
  int bar;
  double max,delta,value;

  max=R2N(rmax);
  delta=R2N(rdelta);

  // the maths is just to stop double rounding errors and bad values.
  bar=((int)floor(R2N(rbar)+0.1)) % 10;
  if ( fabs(delta) > 0.1 ) {
    // don't move or init the bar if delta=0 (the widget is only browsing)
    if (values[bar] == -1) {
      // first time called.
      values[bar]=R2N(rstart);
      deltas[bar]=delta;
    };
    values[bar]+=deltas[bar];
  };
  if (values[bar] < 0 || values[bar] > max ) {
    // turn around.
    deltas[bar]= -deltas[bar];
    values[bar]+= deltas[bar];
  };
  value=values[bar];
  SetResult(&result, R_NUMBER, &value);
}


// like above, but just switches a value between 1 and -1. Can use to test
// visibility of icons.
static void my_test_onoff (RESULT *result, RESULT *arg1)
{
  static int on[10] = {1,1,1,1,1,1,1,1,1,1};
  int i;
  double val;
  
  i = ((int)floor(R2N(arg1)+0.1)) % 10;
  on[i] = -on[i];
  val = (double)on[i];

  SetResult(&result, R_NUMBER, &val);
}


int plugin_init_test (void)
{
  
  AddFunction ("test::bar",   4, my_test_bar);
  AddFunction ("test::onoff", 1, my_test_onoff);
  
  return 0;
}

void plugin_exit_test(void)
{
  // empty
}