lib/LOWPASS.h

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00001 /*
00002  *  Qtstalker stock charter
00003  *
00004  *  Copyright (C) 2001-2007 Stefan S. Stratigakos
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019  *  USA.
00020  */
00021 
00022 #include "IndicatorPlugin.h"
00023 #include "qtsFFT.h"
00024 
00025 class LOWPASS : public IndicatorPlugin
00026 {
00027   public:
00028     LOWPASS ();
00029     virtual ~LOWPASS ();
00030     Indicator * calculate ();
00031     PlotLine * getLowpass (PlotLine *in, double fre, double wid);
00032     int indicatorPrefDialog (QWidget *);
00033     void setDefaults();
00034     PlotLine * calculateCustom (QString &, QPtrList<PlotLine> &);
00035     void getIndicatorSettings (Setting &);
00036     void setIndicatorSettings (Setting &);
00037     void formatDialog (QStringList &vl, QString &rv, QString &rs);
00038   
00039   private:
00040     QColor color;
00041     PlotLine::LineType lineType;
00042     QString label;
00043     double freq;
00044     double width;
00045     BarData::InputType input;
00046     qtsFFT * fft;
00047     void detrend(PlotLine* inLine, double* slope, double* intercept);
00048     PlotLine * detrend(PlotLine *x, double &slope, double &intercept, bool detrend = true);
00049     PlotLine * raise2Power(PlotLine *x, double pad = 0.0);
00050 
00051     QString colorLabel;
00052     QString lineTypeLabel;
00053     QString labelLabel;
00054     QString inputLabel;
00055     QString pluginLabel;
00056     QString freqLabel;
00057     QString widthLabel;
00058 };
00059