DrawChanels.java

package ua.stu.view.scpview;

import ua.stu.scplib.attribute.GraphicAttributeBase;
import and.awt.BasicStroke;
import and.awt.Color;
import android.R.bool;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.Scroller;
import net.pbdavey.awt.AwtView;
import net.pbdavey.awt.Font;
import net.pbdavey.awt.Graphics2D;
import net.pbdavey.awt.RenderingHints;
/**
 * Класс для отрисовки именов каналов и единичного сигнала
 * 
 * @author ivan
 *
 */
public class DrawChanels extends AwtView{

	// window size params
	private int W = 70;
	private int H = 600;
	// scroll window params
	private int SW = 920;
	private int SH = 600;
	// inch constant
	private float duim = (float) 25.4;
	// screen size in dpi
	private int sizeScreen = 126;
	//set of graphic attributes
	private GraphicAttributeBase g=null;
	// array for channel offsets
	private float offsets[] = null;
	//the number of tiles to display per column
	private int nTilesPerColumn = 12;
	//the number of tiles to display per row (if 1, then nTilesPerColumn should == numberOfChannels)
	private int nTilesPerRow = 1;
	//how may pixels to use to represent one millivolt
	private float yPixelsInMillivolts;
	// color map
	Color curveColor = Color.blue;
	Color channelNameColor = Color.black;
	// basic font
	Font font = null;
	// scrolling
	private GestureDetector gestureDetector;	
	private Scroller scroller;
	// inversion flag
	private boolean isInvert = false;

	@Override
    public boolean onTouchEvent(MotionEvent event) {
		if ((event.getAction() & MotionEvent.ACTION_MASK) == MotionEvent.ACTION_DOWN) {
			if (!scroller.isFinished()) scroller.abortAnimation();
		}	
		// check for scroll gesture
		if (gestureDetector.onTouchEvent(event)) return true;
		return true;
    }

	public void initscale(GestureListener mg){
		gestureDetector = new GestureDetector(getContext(),mg);
		scroller = new Scroller(getContext());
		// init scrollbars
        setVerticalScrollBarEnabled(true);
        setHorizontalFadingEdgeEnabled(false);
        setHorizontalScrollBarEnabled(false);
        TypedArray a = getContext().obtainStyledAttributes(R.styleable.View);       
        initializeScrollbars(a);
        a.recycle();
	}
	public DrawChanels(Context context) {
		super(context);
		
	}
	public DrawChanels(Context context, AttributeSet attribSet) {
		super(context, attribSet);

	}
	
	public void drawChannels(Graphics2D g2) {
		// start x channel name offset
				int channelNameXOffset = 10;
				// start y channel name offset
				font=new Font("Ubuntu",0,(14));		
				float widthOfTileInPixels = W/nTilesPerRow;
				float heightOfTileInPixels = H/nTilesPerColumn;		
				int channel=0;
				g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);	
				float tile = yPixelsInMillivolts*duim/sizeScreen;
				float yIdealTiles = 4*tile - (int)(tile/2);	
				for (int row=0;row<nTilesPerColumn;++row) {
					float drawingOffsetX = 0;
					for (int col=0;col<nTilesPerRow;++col) {
							g2.setStroke(new BasicStroke((float) 1.0));
					if (g.getChannelNames() != null && channel < g.getDisplaySequence().length && 
								g.getDisplaySequence()[channel] < g.getChannelNames().length) {
							String channelName=g.getChannelNames()[g.getDisplaySequence()[channel]];
							if (channelName != null) {
								g2.setStroke(new BasicStroke());
								g2.setColor(channelNameColor);
								g2.setFont(font);
								g2.drawString(channelName,drawingOffsetX+channelNameXOffset,offsets[row]);
								g2.setColor(curveColor);
								// drawing ideal signal
								g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/8)
										,(int)(offsets[row])
										,(int)(channelNameXOffset*4 + heightOfTileInPixels/4)
										,(int)(offsets[row]));
								if (!isInvert) {
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row])
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row] - yIdealTiles));
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row] - yIdealTiles)
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row] - yIdealTiles));
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row] - yIdealTiles)
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row]));
								}
								else {
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row])
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row] + yIdealTiles));
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/4)
											,(int)(offsets[row] + yIdealTiles)
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row] + yIdealTiles));
									g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row] + yIdealTiles)
											,(int)(channelNameXOffset*4 + heightOfTileInPixels/2)
											,(int)(offsets[row]));
								}
								g2.drawLine((int)(channelNameXOffset*4 + heightOfTileInPixels/2)
										,(int)(offsets[row])
										,(int)(channelNameXOffset*4 + 5*heightOfTileInPixels/8)
										,(int)(offsets[row]));
							}
							// ideal signal end
						}
						
						drawingOffsetX+=widthOfTileInPixels;
						++channel;
					}
				}
	}

	@Override
	public void paint(Graphics2D g2) {
		if (g==null || offsets==null) return;
		drawChannels(g2);
	}
	
	public void setGraphicAttributeBase(GraphicAttributeBase g) {
		this.g=g;
	}
	public void setYScale(float millimetersPerMillivolt) {		
		this.yPixelsInMillivolts = (7/millimetersPerMillivolt/(duim/sizeScreen));
	}		
	
	public void setInvert(boolean invert) {
		this.isInvert = invert;
	}
	public void setyPixelsInMillivolts(int yPixelsInMillivolts) {
		this.yPixelsInMillivolts = yPixelsInMillivolts;
	}
	public void setGraphicColor(Color c){
		this.curveColor=c;
	}
	public void setChanelNameColor(Color c){
	this.channelNameColor=c;	
	}
	public Scroller getScroller() {
		return scroller;
	}
	
	public void setOffsets(float[] arr) {
		offsets = arr.clone();
	}
}