import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.lang.*;

// Standing Wave Patterns

public class TransGraphCanvas2 extends Canvas implements ComponentListener{
    private static final Color bgcolor = Color.gray;
    
    private double ymax, ymin, xmax, xmin;
    private boolean IsYRangeMaxSet, IsYRangeMinSet, IsXRangeMaxSet, IsXRangeMinSet; 
    private int LeftMargin=30, RightMargin=15, TopMargin=20, BottomMargin=15;
    private int WIDTH, HEIGHT;
    private String X1, X2, Y1, Y2, Y3, Y4, TITLE;
    private Image im;
    private Graphics buf;
    private int VPos = 0;
    private static final Font TitleFont = TheFonts.serif12;
    private static final Font LabelFont = TheFonts.sanSerif11;
    private double[] x, y;
    protected double xpos, xposref;
    private int[] xx, yy;
    private int[] xx_old, yy_old;
    private int N;
    private int Flag = 0;
    private boolean IsTraceOn, IsCleanUpOn, IsDynamic, IsVoltage;
    public double sfactor;
    
    public TransGraphCanvas2(){
	super();
	N = 100;
        
        LeftMargin = (int)Math.ceil(30*sfactor);
        RightMargin = (int)Math.ceil(15*sfactor);
        TopMargin = (int)Math.ceil(20*sfactor);
        BottomMargin = (int)Math.ceil(15*sfactor);
        
	xpos = 0.0;
	xposref = 0.0;
	setBackground(bgcolor);
	xmax = 1.0;
	xmin = 0.0;
	ymax = 2.0;
	ymin = 0.0;
	X1 = "L";
	X2 = "0";
	Y1 = "  ";
	Y2 = "  ";
	TITLE = "  ";
        
        IsVoltage = true;
	IsYRangeMaxSet = false;
	IsYRangeMinSet = false;
	IsXRangeMaxSet = false;
	IsXRangeMinSet = false;
	IsTraceOn = false;
	IsCleanUpOn = false;
	IsDynamic = false;
	try{
	    x = new double[N];
	    y = new double[N];
	    xx = new int[N];
	    yy = new int[N];
	    xx_old = new int[N];
	    yy_old = new int[N];
	}
	catch(Exception e){e.printStackTrace();}
	for(int i = 0; i < x.length; i++){
	    x[i] = (double)i;
	    y[i] = 0.0;
	}
	//Listeners
	this.addComponentListener(this);
    }
    
    public void paint(Graphics g){
	if(im == null){
	    im = createImage(getSize().width,getSize().height);
	    buf = im.getGraphics();
	    drawGraph(buf);
	}
	else{
            drawGraph(buf);
	}
	g.drawImage(im,0,0,null);
    }
    
    public void update(Graphics g){		// added to avoid clearing
	paint(g);
    }
    
    public void clear(){
	this.getGraphics().clearRect(0,0,getSize().width,getSize().height);
	repaint();
    }
    
    public void redo(Graphics g){
        g.clearRect(0,0,getSize().width-1,getSize().height-1);
    }
    
    public void drawGraph(Graphics g){
	if(!IsDynamic){
	    g.clearRect(0,0,getSize().width-1,getSize().height-1);
	}
        LeftMargin = (int)Math.ceil(30*sfactor);
        RightMargin = (int)Math.ceil(15*sfactor);
        TopMargin = (int)Math.ceil(20*sfactor);
        BottomMargin = (int)Math.ceil(15*sfactor);
        
	drawAxis(g);
	labelDetect();
	drawLabels(g);
	
	drawPoints(g,1);
	//if(!IsDynamic){
	    drawRef(g);
	//}
        
        drawZeroLine(g);
                
    }
    
    private void ignition(){
	LeftMargin = (int)Math.ceil(30*sfactor);
        RightMargin = (int)Math.ceil(15*sfactor);
        TopMargin = (int)Math.ceil(20*sfactor);
        BottomMargin = (int)Math.ceil(15*sfactor);
        
        N = x.length;
	//Find the boundaries for data
    	if(!IsYRangeMaxSet){ ymax = MaestroA.getMax(y);}
	if(!IsYRangeMinSet){ ymin = MaestroA.getMin(y);}
	
	if(!IsXRangeMaxSet){ xmax = x[x.length-1];}
	if(!IsXRangeMinSet){ xmin = x[0]; }
	
	//Confine data
	MaestroA.confiner(x,xmax,xmin);
	MaestroA.confiner(y,ymax,ymin);
	if(ymax==0.0 && ymin==0.0){ymax=0.001;}
	
	//Reverse Mapping
	for(int i = 0; i < xx.length; i++){
	    xx[N-1-i] = (int)MaestroA.mapper(x[i],(double)LeftMargin+1,(double)(getSize().width-RightMargin),xmax,xmin);
	    yy[N-1-i] = (int)MaestroA.mapper(y[i],(double)TopMargin+1,(double)(getSize().height-BottomMargin)-1,ymax,ymin);
	    
	}
    }
    
    private void drawPoints(Graphics g, int tipo){
	//switch(tipo){
	    //case 1:
                if(IsVoltage){
                     g.setColor(Color.yellow);
                }
                else{
                     g.setColor(Color.white);
                }
		    //g.drawPolyline(xx,yy,xx.length);
		for(int i = 0; i < xx.length-1; i++){
                    g.drawLine(xx[i],yy[i],xx[i+1],yy[i+1]);
		}
                
		//break;
	    
	//}
    }
       
    private void drawAxis(Graphics g){
	VPos = getSize().height - BottomMargin;
	WIDTH = getSize().width - LeftMargin -RightMargin;
	HEIGHT = VPos - TopMargin;
	g.setColor(Color.white);
	g.drawLine(LeftMargin,VPos,getSize().width-RightMargin,VPos);
	g.drawLine(LeftMargin,TopMargin,LeftMargin,VPos);
	g.drawLine(getSize().width-RightMargin,TopMargin,getSize().width-RightMargin,VPos);
    }
    
    public void drawRef(Graphics g){
	  if(!IsDynamic){
	    xposref = xpos;
	  } 
   	  if(xposref <=xmax && xposref >= xmin){
		int tx1right,tx1, ty1, tx2, ty2;
		tx1right = (int)MaestroA.mapper(xmin,(double)LeftMargin+1,(double)(getSize().width-RightMargin),xmax,xmin);
		tx1 = (int)MaestroA.mapper(xposref,(double)LeftMargin+1,(double)(getSize().width-RightMargin),xmax,xmin);
		ty1 = TopMargin;
		tx2 = tx1;
		ty2 = getSize().height-BottomMargin;
		if(xposref == 0.0){
		    g.setColor(Color.white);
		}
		else{		    
		    g.setColor(Color.green);		    
		}
		g.drawLine(tx1,ty1,tx2,ty2);
                g.setColor(Color.white);
                g.drawLine(tx1right,ty1,tx1right,ty2);		
          }
    }	
    
    private void labelDetect(){
    
	double tempmax=0.0;
	if(ymax>=1.0 && ymax<1.0E3 || ymax==0.0){
	    tempmax = ymax;
	}
	else if(ymax<1.0E6 && ymax>=1.0e3){
	    tempmax = ymax*1.0E-3;
	}
	else if(ymax>=1.0e6){
	    tempmax = ymax*1.0E-6;
	}
	else if(ymax<1.0 && ymax>=1.0e-3){
	    tempmax = ymax*1.0E3;
	}
	else if(ymax<1.0E-3 && ymax>=1.0e-6){
	    tempmax = ymax*1.0E6;
	}
	else if(ymax<1.0E-6 && ymax>=1.0e-9){
	    tempmax = ymax*1.0E9;
	}
	else if(ymax<1.0E-9 && ymax>=1.0E-12){
	    tempmax = ymax*1.0E12;
	}
	else if(ymax<1.0E-12 && ymax>=1.0E-15){
	    tempmax = ymax*1.0E15;
	}
	else if(ymax<1.0E-15){
	    tempmax = ymax*1.0E18;
	}
	
	    Y1 = String.valueOf(MaestroA.rounder(tempmax,3))+" ";
	
	if(ymin==0.0){
	    Y2 = String.valueOf(MaestroA.rounder(ymin,3))+" ";
	}
	else{
	    Y2 = String.valueOf(MaestroA.rounder(-tempmax,3))+" ";
	}
	Y3 = "_";
	Y4 = "|";

    }
    
    private void drawLabels(Graphics g){
	String tmp;
	//g.setFont(LabelFont);
        g.setFont(new Font("SanSerif",Font.PLAIN,(int)Math.ceil(10*sfactor)));
	g.clearRect(0,0,LeftMargin-(int)Math.ceil(1*sfactor),getSize().height-(int)Math.ceil(1*sfactor));
	g.clearRect(0,0,getSize().width-(int)Math.ceil(1*sfactor),TopMargin-(int)Math.ceil(1*sfactor));
	FontMetrics fm = g.getFontMetrics();
	tmp = X1;
	//g.drawString(tmp,LeftMargin-1,VPos+fm.getHeight()+2);
	tmp = X2;
	//g.drawString(tmp,getSize().width-RightMargin-fm.stringWidth(tmp)/2+1,VPos+fm.getHeight()+2);
	tmp = Y1;
	//g.drawString(tmp,LeftMargin-fm.stringWidth(tmp),TopMargin+fm.getHeight());
	//g.drawString(tmp,LeftMargin-fm.stringWidth(tmp)-10,TopMargin);
	tmp = Y2;
	g.drawString(tmp,LeftMargin-fm.stringWidth(tmp)-(int)Math.ceil(5*sfactor),VPos+(int)Math.ceil(7*sfactor));
	
	tmp = Y3;
	g.drawString(tmp,LeftMargin-(int)Math.ceil(5*sfactor),VPos-(int)Math.ceil(1*sfactor));
	g.drawString(tmp,LeftMargin-(int)Math.ceil(5*sfactor), TopMargin);
	g.drawString(tmp,getSize().width-RightMargin,VPos-(int)Math.ceil(1*sfactor));
	g.drawString(tmp,getSize().width-RightMargin,TopMargin);
	tmp = Y4;
	//g.drawString(tmp,LeftMargin,VPos+4);
	//g.drawString(tmp,getSize().width-RightMargin-fm.stringWidth(tmp)/2+1,VPos+4);
	
	tmp = TITLE;
	//g.setFont(TitleFont);
        g.setFont(new Font("Serif",Font.PLAIN,(int)Math.ceil(11*sfactor)));
	//g.drawString(tmp,LeftMargin-20,TopMargin-2);
        g.drawString(tmp,6*getSize().width/10,TopMargin-(int)Math.ceil(7*sfactor));
        
        if(Flag == 1){
	    //g.setFont(TheFonts.sanSerif11);
            MaestroG.superscripter("2 |V","+","|",g,(int)Math.ceil(10*sfactor),LeftMargin-(int)Math.ceil(24*sfactor),TopMargin-(int)Math.ceil(4*sfactor));  
	}
	else if(Flag == 2){
	    //g.setFont(TheFonts.sanSerif11);
            MaestroG.supsub("2 |V","+","| / Z","0","",g,(int)Math.ceil(10*sfactor),LeftMargin-(int)Math.ceil(24*sfactor),TopMargin-(int)Math.ceil(4*sfactor));
	}
    }
    
    private void drawZeroLine(Graphics g){
	int myY;
	myY = (int)MaestroA.mapper(0,(double)TopMargin,(double)VPos,ymax,ymin);
	g.setColor(Color.red);
	g.drawLine(LeftMargin+1,myY,getSize().width-RightMargin-1,myY);
    }
    
    
    public synchronized void reset(){
	IsYRangeMaxSet = false;
	IsYRangeMinSet = false;
	IsXRangeMaxSet = false;
	IsXRangeMinSet = false;
	IsTraceOn = false;
	IsCleanUpOn = false;
    }
    
    public synchronized void cleanUp(){
	IsCleanUpOn=true;
    }
    
    public synchronized void setYRangeMax(double ymax){
	this.ymax = ymax;
	IsYRangeMaxSet = true;
    }
    
    public synchronized void setYRangeMin(double ymin){
	this.ymin = ymin;
	IsYRangeMinSet = true;
    }
    
    public synchronized void setXRangeMax(double xmax){
	this.xmax = xmax;
	IsXRangeMaxSet = true;
    }
    
    public synchronized void setXRangeMin(double xmin){
	this.xmin = xmin;
	IsXRangeMinSet = true;
    }
    
    public synchronized void setTrace(boolean IsTraceOn){
	this.IsTraceOn = IsTraceOn;
	this.clean_memory();
    }
    
    public synchronized void setDynamics(boolean IsDynamic){
	this.IsDynamic = IsDynamic;
    }
    
    /*
    public void update(Graphics g){
	if(!IsDynamic){
	    super.update(g);
	    return;
	}
	if(IsDynamic && IsTraceOn){g.clipRect(LeftMargin+1,TopMargin+1,WIDTH-1,HEIGHT-1);}
	if(IsCleanUpOn){
	    //g.clearRect(0,0,getSize().width-1,getSize().height-1);
	    g.clearRect(LeftMargin+1,TopMargin+1,WIDTH-1,HEIGHT-1);
	    IsCleanUpOn = false;
	}
	drawZeroLine(g);
	if(!IsTraceOn){
	    drawPoints(g,2);//This cleans the previous graph
	    drawRef(g);
	}
	drawPoints(g,1);//This draws the new graph
	
	    drawRef(g);
	
	push();
        
    }
    */
    
    public void plot(double xdata[], double ydata[]){
	N = xdata.length;
	x = new double[N];
	y = new double[N];
	xx = new int[N];
	yy = new int[N];
	for(int i = 0; i < N; i++){
	    x[i] = xdata[i];
	    y[i] = ydata[i];
	}	
	ignition();
	repaint();
        
    }
    
    private void push(){
	if(xx.length != xx_old.length){
	    xx_old = new int[xx.length];
	    yy_old = new int[xx.length];
	}
    
	for(int i = 0; i < xx.length; i++){
	    xx_old[i] = xx[i];
	    yy_old[i] = yy[i];
	}
    }
    
     private void clean_memory(){
	if(xx.length != xx_old.length){
	    xx_old = new int[xx.length];
	    yy_old = new int[xx.length];
	}
    
	for(int i = 0; i < xx.length; i++){
	    xx_old[i] = xx[i];
	    yy_old[i] = 0;
	}
    }
    
    
    
    public synchronized void setScaling(double sfactor){
	this.sfactor = sfactor;   
    }
    
    public synchronized void setTitle(String TITLE){
	this.TITLE = TITLE;
    }
    
    public void setXpos(double xpos){
	this.xpos = xpos;   
    }
    
    public synchronized void setIsVoltage(boolean IsVoltage){
	this.IsVoltage = IsVoltage;
    }
    
    public synchronized void setFlag(int number){
	this.Flag = number;
    }
       
    public void componentHidden(ComponentEvent evt){/*cleanUp();*/}
    public void componentMoved(ComponentEvent evt){/*cleanUp();*/}
    public void componentResized(ComponentEvent evt){/*cleanUp();*/}
    public void componentShown(ComponentEvent evt){/*cleanUp();*/}
     
}