vol.java

一份java写的期货交易程序

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   VOL.java

package gnnt.MEBS.HQApplet.Indicator;

import gnnt.MEBS.HQApplet.*;
import java.awt.Graphics;
import java.awt.Rectangle;

// Referenced classes of package gnnt.MEBS.HQApplet.Indicator:
//            IndicatorBase, IndicatorPos

public class VOL extends IndicatorBase
{

    private final int m_iParam[] = {
        5, 10
    };

    public VOL(IndicatorPos pos, int Precision)
    {
        super(pos, Precision);
        m_strIndicatorName = "VOL";
        m_iPrecision = 0;
        m_strParamName = new String[m_iParam.length];
        for(int i = 0; i < m_iParam.length; i++)
            m_strParamName[i] = "MA" + m_iParam[i];

    }

    public void Paint(Graphics g, Rectangle rc, KLineData data[])
    {
        super.Paint(g, rc, data);
        Calculate();
        GetMaxMin();
        for(int i = 0; i < m_iParam.length; i++)
            GetValueMaxMin(m_data[i], m_iParam[i] - 1);

        DrawCoordinate(g, 0);
        DrawVolume(g);
        for(int i = 0; i < m_iParam.length; i++)
            DrawLine(g, m_data[i], m_iParam[i] - 1, HQApplet.rhColor.clIndicator[i]);

    }

    public void Calculate()
    {
        m_data = new float[m_iParam.length][];
        for(int i = 0; i < m_iParam.length; i++)
            AverageVolume(i);

        m_data = new float[m_iParam.length][];
        for(int i = 0; i < m_iParam.length; i++)
            AverageVolume(i);

    }

    private void GetMaxMin()
    {
        m_max = 0.0F;
        m_min = 0.0F;
        for(int i = m_pos.m_Begin; i <= m_pos.m_End; i++)
            if((float)m_kData[i].totalAmount > m_max)
                m_max = m_kData[i].totalAmount;

    }

    private void DrawVolume(Graphics g)
    {
        if(m_max - m_min == 0.0F || m_rc.height - m_iTextH <= 0)
            return;
        int width = m_pos.m_Ratio >= 3F ? (int)((m_pos.m_Ratio + 1.0F) / 3F) : 0;
        if(width % 2 == 0 && width > 0)
            width--;
        float valuex = (float)m_rc.x + m_pos.m_Ratio / 2.0F;
        float valuey = (m_max - m_min) / (float)(m_rc.height - m_iTextH);
        for(int i = m_pos.m_Begin; i <= m_pos.m_End; i++)
        {
            int value = m_rc.y + m_iTextH + (int)((m_max - (float)m_kData[i].totalAmount) / valuey);
            if(m_kData[i].openPrice > m_kData[i].closePrice)
            {
                g.setColor(HQApplet.rhColor.clKLineDown);
                g.fillRect((int)valuex - width, value, 2 * width + 1, (m_rc.y + m_rc.height) - value - 1);
            } else
            if(m_kData[i].openPrice < m_kData[i].closePrice)
            {
                g.setColor(HQApplet.rhColor.clKLineUp);
                g.drawRect((int)valuex - width, value, 2 * width, (m_rc.y + m_rc.height) - value - 1);
            } else
            {
                g.setColor(HQApplet.rhColor.clKLineEqual);
                g.drawRect((int)valuex - width, value, 2 * width, (m_rc.y + m_rc.height) - value - 1);
            }
            valuex += m_pos.m_Ratio;
        }

    }

    private void AverageVolume(int iIndex)
    {
        if(m_kData == null || m_kData.length == 0)
            return;
        int n = m_iParam[iIndex];
        if(n > m_kData.length || n < 1)
            return;
        m_data[iIndex] = new float[m_kData.length];
        float data[] = m_data[iIndex];
        float prevolume = 0.0F;
        double sum = 0.0D;
        for(int i = 0; i < n - 1; i++)
            sum += m_kData[i].totalAmount;

        for(int i = n - 1; i < m_kData.length; i++)
        {
            sum -= prevolume;
            sum += m_kData[i].totalAmount;
            data[i] = (float)(sum / (double)n);
            prevolume = m_kData[(i - n) + 1].totalAmount;
        }

    }
}