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/***************************************************************************
* Copyright (C) 2003 by Hans Karlsson *
* [email protected] *
* *
* This program 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 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "graph.h"
#include <tqstring.h>
Graph::Graph(karamba* k, int x, int y, int w, int h, int nbrPts):
Meter(k, x, y, w, h), lastValue(0)
{
nbrPoints = (nbrPts==0)? 50:nbrPts ;
ptPtr = 0;
values = new int[nbrPoints];
for(int i = 0; i < nbrPoints; i++)
values[i] = 0;
minValue = 0;
maxValue = 100;
}
Graph::~Graph()
{
delete[] values;
}
void Graph::setValue( long v)
{
if( v > maxValue)
{
// maxValue = v;
v = maxValue;
}
if( v < minValue)
{
//minValue = v;
v = minValue;
}
lastValue = v;
values[ptPtr] = (int) (v / (maxValue + 0.0001) * getHeight());
ptPtr = (ptPtr + 1) % nbrPoints;
}
void Graph::setValue( TQString v )
{
setValue((long)(v.toDouble() + 0.5));
}
void Graph::mUpdate(TQPainter *p)
{
if (hidden == 0)
{
double step = (getWidth() / (nbrPoints-1.001));
double xPos = 0;
double nextXPos = 0;
p->setPen(color);
for (int i = 0; i < nbrPoints - 1 ; i ++)
{
nextXPos = xPos + step;
p->drawLine(getX() + (int)xPos, getY()+getHeight() -
(int) values[(ptPtr+i) % nbrPoints] ,
getX() + (int)nextXPos, getY()+getHeight() -
(int) values[(ptPtr + i +1) % nbrPoints] );
xPos = nextXPos;
}
}
}
#include "graph.moc"
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