Android Open Source - SpunkyCharts Draw Semantics_ C A N D L E

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Back to project page SpunkyCharts.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.jogden.spunkycharts.traditionalchart.draw;
//from w ww  .  j a v a2s . c  o  m
/* 
Copyright (C) 2014 Jonathon Ogden     < jeog.dev@gmail.com >

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 3 of the License, or
(at your option) any later version.

This program 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, see http://www.gnu.org/licenses.
*/

import com.jogden.spunkycharts.misc.OHLC;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;

public class DrawSemantics_CANDLE  extends DrawSemantics_OHLC
{    
    static private int upColor = Color.GREEN;
    static private int downColor = Color.RED;
    static private Paint upBrush;
    static private Paint downBrush;
    static{
        upBrush = new Paint(Paint.ANTI_ALIAS_FLAG);        
        upBrush.setColor(upColor);
        upBrush.setStyle(Paint.Style.FILL);
        downBrush = new Paint(Paint.ANTI_ALIAS_FLAG);
        downBrush.setColor(downColor);        
        downBrush.setStyle(Paint.Style.FILL);
    }
    
    public DrawSemantics_CANDLE(
        Context context, int width, int height,
        int topBuffer, int bottomBuffer,
        float displayHigh, float displayLow,
        int lineColor, int lineThickness, float segThickness
        ){  
            super(
                context, width, height, 
                topBuffer, bottomBuffer,
                displayHigh, displayLow,
                lineColor, lineThickness, segThickness
                );              
        }  
    
    @Override
    public void drawSegment(Canvas canvas,int xPos, OHLC ohlc)
    {
        float closeY = displayHigh - ohlc.close;
        float openY = displayHigh - ohlc.open;
        float highY = displayHigh - ohlc.high;
        float lowY = displayHigh - ohlc.low;
        float diff = ohlc.close - ohlc.open;
        canvas.drawLine( 
            xPos, 
            (highY*pixPerY) + tBuf, 
            xPos, 
            (Math.max(openY, closeY)*pixPerY) + tBuf, 
            brush 
            );
        canvas.drawLine( 
            xPos, 
            (Math.min(openY, closeY)*pixPerY) + tBuf, 
            xPos, 
            (lowY*pixPerY) + tBuf, 
            brush 
            );   
        canvas.drawRect(
            (float)xPos - (width/2f) + barBufX, 
            (closeY*pixPerY)+tBuf, 
            (float)xPos + (width/2f) - barBufX, 
            (openY*pixPerY)+tBuf,
            (diff < 0) ? downBrush : upBrush
            );    
        /*
        if( diff > 0 )           
        else if( diff < 0)
            canvas.drawRect(
                (float)xPos - (width/2f) + barBufX, 
                (openY*pixPerY)+tBuf, 
                (float)xPos + (width/2f) - barBufX, 
                (closeY*pixPerY)+tBuf,
                downBrush
                );
        else
            canvas.drawLine( 
                (float)xPos - (width/2f) + barBufX, 
                (closeY*pixPerY) + tBuf, 
                (float)xPos + (width/2f) - barBufX,  
                (closeY*pixPerY) + tBuf, 
                brush 
                );           */         
    }

}

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