import vix.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;
import java.awt.image.*;
import java.util.*;
import javax.swing.*;

public class Cubica extends Desenho
{
  private static final String NOME = "Cubica";
  private static final float MARGEM = 5;

  protected static JPopupMenu popup;
  static {
    popup = new JPopupMenu(NOME);
    final JMenuItem item1 = new JMenuItem("Info");
    item1.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent ev) {
        JPopupMenu popup = (JPopupMenu)item1.getParent();
        Cubica cubica = (Cubica)popup.getClientProperty(DESENHO);
        String msg = "Cubica: "+cubica.cubica;
        JOptionPane.showMessageDialog(null, msg, "Descrição",
                                      JOptionPane.INFORMATION_MESSAGE);
      }
    });
    popup.add(item1);
  }

  protected CubicCurve2D cubica;
  protected Shape contorno;

  public Cubica(Point2D[] pontos) {
    this(pontos[0], pontos[1], pontos[2], pontos[3]);
  }
  public Cubica(Point2D p1, Point2D cp1, Point2D cp2, Point2D p2) {
    cubica = new CubicCurve2D.Float();
    cubica.setCurve(p1, cp1, cp2, p2);
    atualizaNome();
  }
  protected void atualizaContorno() {
    Stroke s = vs.getGraphics2D().getStroke();
    contorno = s.createStrokedShape(cubica);
  }
  protected void atualizaNome() {
    String p1 = "("+cubica.getX1()+","+cubica.getY1()+")";
    String c1 = "("+cubica.getCtrlX1()+","+cubica.getCtrlY1()+")";
    String c2 = "("+cubica.getCtrlX2()+","+cubica.getCtrlY2()+")";
    String p2 = "("+cubica.getX2()+","+cubica.getY2()+")";
    nome = NOME+" ["+p1+","+c1+","+c2+","+p2+"]";
  }
  public Rectangle2D getBounds2D() {
    return cubica.getBounds2D();
  }
  public TypeVO pick(Point2D pt) {
    float x = (float)pt.getX()-MARGEM;
    float y = (float)pt.getY()-MARGEM;
    float w = 2*MARGEM;
    float h = 2*MARGEM;
    if (contorno == null) atualizaContorno();
    if (contorno.intersects(x,y,w,h)) return this;
    return null;
  }
  public void callbackRepaint(Graphics2D g) {
    g.setColor(Color.black);
    g.draw(cubica);
  }
  public boolean msgHandlerVO(Message msg) {
    if (msg instanceof ExibePopupElementoMsg) {
      exibePopup(popup, (ExibePopupElementoMsg)msg);
      return true;
    }
    return super.msgHandlerVO(msg);
  }
  public boolean move(float dx, float dy) {
    float x1 = (float)cubica.getX1()+dx;
    float y1 = (float)cubica.getY1()+dy;
    float cx1 = (float)cubica.getCtrlX1()+dx;
    float cy1 = (float)cubica.getCtrlY1()+dy;
    float cx2 = (float)cubica.getCtrlX2()+dx;
    float cy2 = (float)cubica.getCtrlY2()+dy;
    float x2 = (float)cubica.getX2()+dx;
    float y2 = (float)cubica.getY2()+dy;
    cubica.setCurve(x1,y1, cx1,cy1, cx2,cy2, x2,y2);
    atualizaContorno();
    atualizaNome();
    return true;
  }
  public void desenhaRascunho(Graphics2D g) {
    g.setColor(Color.black);
    g.draw(cubica);
  }
  public void marcaControles(Graphics2D g) {
    g.setColor(Color.blue);
    float x = (float)cubica.getX1();
    float y = (float)cubica.getY1();
    g.draw(new Rectangle2D.Float(x-MARGEM/2, y-MARGEM/2, MARGEM, MARGEM));
    x = (float)cubica.getCtrlX1();
    y = (float)cubica.getCtrlY1();
    g.draw(new Rectangle2D.Float(x-MARGEM/2, y-MARGEM/2, MARGEM, MARGEM));
    x = (float)cubica.getCtrlX2();
    y = (float)cubica.getCtrlY2();
    g.draw(new Rectangle2D.Float(x-MARGEM/2, y-MARGEM/2, MARGEM, MARGEM));
    x = (float)cubica.getX2();
    y = (float)cubica.getY2();
    g.draw(new Rectangle2D.Float(x-MARGEM/2, y-MARGEM/2, MARGEM, MARGEM));
  }
  public int pegaControle(Point2D pt) {
    if (cubica.getP1().distance(pt) <= MARGEM) return 0;
    if (cubica.getCtrlP1().distance(pt) <= MARGEM) return 1;
    if (cubica.getCtrlP2().distance(pt) <= MARGEM) return 2;
    if (cubica.getP2().distance(pt) <= MARGEM) return 3;
    return -1;
  }
  public void desenhaRascunho(Graphics2D g, int controle, Point2D pt) {
    Point2D p = null;
    switch (controle) {
      case 0 :
        p = cubica.getP1();
        break;
      case 1 :
        p = cubica.getCtrlP1();
        break;
      case 2 :
        p = cubica.getCtrlP2();
        break;
      case 3 :
        p = cubica.getP2();
        break;
      default : // Not reached.
        System.out.println("Cubica: desenhaRascunho de "+controle+"?");
        return;
    }
    g.setColor(Color.black);
    mudaControle(controle, pt);
    g.draw(cubica);
    mudaControle(controle, p);
  }
  public void mudaControle(int controle, Point2D pt) {
    float x1 = (float)cubica.getX1();
    float y1 = (float)cubica.getY1();
    float cx1 = (float)cubica.getCtrlX1();
    float cy1 = (float)cubica.getCtrlY1();
    float cx2 = (float)cubica.getCtrlX2();
    float cy2 = (float)cubica.getCtrlY2();
    float x2 = (float)cubica.getX2();
    float y2 = (float)cubica.getY2();
    switch (controle) {
      case 0 :
        x1 = (float)pt.getX();
        y1 = (float)pt.getY();
        break;
      case 1 :
        cx1 = (float)pt.getX();
        cy1 = (float)pt.getY();
        break;
      case 2 :
        cx2 = (float)pt.getX();
        cy2 = (float)pt.getY();
        break;
      case 3 :
        x2 = (float)pt.getX();
        y2 = (float)pt.getY();
        break;
      default : // Not reached.
        System.out.println("Cubica: mudaControle de "+controle+"?");
        return;
    }
    cubica.setCurve(x1,y1, cx1,cy1, cx2,cy2, x2,y2);
    atualizaContorno();
    atualizaNome();
  }
}