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75 lines
2.0 KiB
75 lines
2.0 KiB
/***************************************************************************
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* Copyright (C) 2003 by Hans Karlsson *
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* karlsson.h@home.se *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#include "graph.h"
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#include <tqstring.h>
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Graph::Graph(karamba* k, int x, int y, int w, int h, int nbrPts):
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Meter(k, x, y, w, h), lastValue(0)
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{
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nbrPoints = (nbrPts==0)? 50:nbrPts ;
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ptPtr = 0;
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values = new int[nbrPoints];
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for(int i = 0; i < nbrPoints; i++)
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values[i] = 0;
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minValue = 0;
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maxValue = 100;
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}
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Graph::~Graph()
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{
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delete[] values;
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}
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void Graph::setValue( long v)
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{
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if( v > maxValue)
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{
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// maxValue = v;
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v = maxValue;
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}
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if( v < minValue)
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{
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//minValue = v;
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v = minValue;
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}
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lastValue = v;
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values[ptPtr] = (int) (v / (maxValue + 0.0001) * getHeight());
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ptPtr = (ptPtr + 1) % nbrPoints;
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}
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void Graph::setValue( TQString v )
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{
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setValue((long)(v.toDouble() + 0.5));
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}
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void Graph::mUpdate(TQPainter *p)
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{
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if (hidden == 0)
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{
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double step = (getWidth() / (nbrPoints-1.001));
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double xPos = 0;
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double nextXPos = 0;
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p->setPen(color);
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for (int i = 0; i < nbrPoints - 1 ; i ++)
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{
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nextXPos = xPos + step;
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p->drawLine(getX() + (int)xPos, getY()+getHeight() -
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(int) values[(ptPtr+i) % nbrPoints] ,
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getX() + (int)nextXPos, getY()+getHeight() -
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(int) values[(ptPtr + i +1) % nbrPoints] );
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xPos = nextXPos;
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}
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}
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}
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#include "graph.moc"
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