/*
 * CoordinateCanvas.java
 *
 * Created on November 10, 2005, 10:18 AM
 */

package Current.canvases.Coordinate;

import Current.gui.*;
import Current.manage.*;

import java.awt.*;
import java.awt.event.*;

import org.pat.graphics.boxed.ListenString;

/**
 *
 * @author  pat
 */
public class CoordinateCanvas extends DBCanvas
implements MouseListener, FocusListener, KeyListener {
    Manager M;
    
    ListenString[] Z;
    
    ListenString doc;
    int selected=-1;
    
    static final int padding=4;
    
    // colors
    static final Color buttonBg=new Color(255,80,255);
    static final Color buttonFg=Color.black;
    
    
    /** Creates a new instance of CoordinateCanvas */
    public CoordinateCanvas(Manager M) {
        this.M=M;
        M.addListener(this);
        
        setBackground(new Color(100,0,100));
        
        setFont(new Font("Monospaced", Font.PLAIN, 12));
        Z=new ListenString[2];
        
        double x=padding,y=padding;
        Z[0]=new ListenString("0.123456", this);
        Z[0].setLeft(x);
        Z[0].setTop(y);
        Z[0].setColors(buttonFg,buttonBg);
        //Z[0].showBorder=false;
        
        x=Z[0].getRight()+padding;
        doc=new ListenString("?",this);
        doc.setLeft(x);
        doc.setTop(y);
        doc.setColors(buttonFg,buttonBg);
        
        x=padding;
        y=Z[0].getBottom()+padding;
        Z[1]=new ListenString("0.123456", this);
        Z[1].setLeft(x);
        Z[1].setTop(y);
        Z[1].setColors(buttonFg,buttonBg);
        //Z[1].showBorder=false;
        
        setSize((int)(doc.getRight()+padding),(int)(Z[1].getBottom()+padding));
        mcbReceive((Parameter)(M.mcbGet(Parameter.class)));
        
        addMouseListener(this);
        addFocusListener(this);
        addKeyListener(this);
    }
    
    public void mcbCleanup() {
        M.remove(this);
    }
    
    public void paint(Graphics gfx) {
        Graphics2D g=(Graphics2D) gfx;
        
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
        //g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
        //RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
        
        Z[0].render(g);
        Z[1].render(g);
        doc.render(g);
        
        Dimension D=getSize();
        g.setColor(new Color(255,155,0));
        g.drawRect(0,0,D.width-1,D.height-1);
    }
    
    public void mcbReceive(Parameter p) {
        double x=(int)(p.getX()*1000000)/1000000.0;
        double y=(int)(p.getY()*1000000)/1000000.0;
        if (x==1){
            x=0.999999;
        }
        if (y==1){
            y=0.999999;
        }
        if (x==0)
            Z[0].str="0.";
        else
            Z[0].str=Double.toString(x);
        if (y==0)
            Z[1].str="0.";
        else
            Z[1].str=Double.toString(y);
        repaint();
    }
    
    public void updateColors(){
        Z[1].setColors(buttonFg,buttonBg);
        Z[0].setColors(buttonFg,buttonBg);
        if (selected!=-1) {
            Z[selected].setColors(buttonFg,Color.white);
        }
    }
    
    public void deselect() {
        selected=-1;
        Z[1].setColors(buttonFg,buttonBg);
        Z[0].setColors(buttonFg,buttonBg);
    }
    
    public void mouseClicked(MouseEvent e) {
        if (doc.contains(e.getX(),e.getY())){
            M.mcbSend(new HelpDocument("CoordinateCanvas.html"));
            //M.setExplain("These numbers represent the angles of the triangle that correspond to the point in the parameter space. Two of the angles of the triangle can be described as 90 degrees times the top and bottom numbers.");
            return;
        }
        for (int i=0; i<2; i++) {
            if (Z[i].contains(e.getX(),e.getY())){
                if (selected!=i)
                    selected=i;
                else
                    selected=-1;
                updateColors();
                repaint();
                return;
            }
        }
    }
    
    public void mouseEntered(MouseEvent e) {
    }
    
    public void mouseExited(MouseEvent e) {
    }
    
    public void mousePressed(MouseEvent e) {
    }
    
    public void mouseReleased(MouseEvent e) {
    }
    
    public void focusGained(java.awt.event.FocusEvent focusEvent) {
    }
    
    public void focusLost(java.awt.event.FocusEvent focusEvent) {
        deselect();
        repaint();
    }
    
    public void keyPressed(KeyEvent e) {
    }
    
    public void keyReleased(KeyEvent E) {
    }
    
    public void keyTyped(KeyEvent e) {
        if (e.getKeyChar()==KeyEvent.VK_TAB) {
            selected=(selected+1)%2;
            updateColors();
            repaint();
            return;
        }
        if (selected!=-1) {
            if (e.getKeyChar()==KeyEvent.VK_ENTER) {
                deselect();
                repaint();
                return;
            }
            String str=Z[selected].str;
            if (e.getKeyChar()==KeyEvent.VK_BACK_SPACE) {
                if (str.length()>2)
                    str=str.substring(0,str.length()-1);
            }
            if (e.getKeyChar()==KeyEvent.VK_DELETE) {
                str="0.";
            }
            int ch=(int)(e.getKeyChar()-'0');
            if ((ch>=0)&&(ch<10)){
                if (str.length()<8) {
                    str=str+e.getKeyChar();
                }
            }
            //System.out.println("x="+x+" temp="+temp);
            if (str!=Z[selected].str) {
                Z[selected].str=str;
                M.setParameter(Double.parseDouble(Z[0].str), Double.parseDouble(Z[1].str));
            }
        }
    }
    
}