/* Copyright (C) 1999  Free Software Foundation

   This file is part of libjava.

This software is copyrighted work licensed under the terms of the
Libjava License.  Please consult the file "LIBJAVA_LICENSE" for
details.  */

package java.awt;

/* Status:  Mostly complete. Some of the Java2D stuff is commented out. */

// FIXME: Should extend Rectangle2D for 1.2 implementation
public class Rectangle implements Cloneable, Shape
{
  public int x;
  public int y;
  public int width;
  public int height;

  public Rectangle()
  {
    x = 0;
    y = 0;
    width = 0;
    height = 0;
  }

  public Rectangle(Rectangle r)
  {
    x = r.x;
    y = r.y;
    width = r.width;
    height = r.height;
  }

  public Rectangle(int x, int y, int width, int height)
  {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
  }

  public Rectangle(int width, int height)
  {
    x = 0;
    y = 0;
    this.width = width;
    this.height = height;
  }

  public Rectangle(Point p, Dimension d)
  {
    x = p.x;
    y = p.y;
    width = d.width;
    height = d.height;
  }

  public Rectangle(Point p)
  {
    x = p.x;
    y = p.y;
    width = 0;
    height = 0;
  }

  public Rectangle(Dimension d)
  {
    x = 0;
    y = 0;
    width = d.width;
    height = d.height;
  }

  public Rectangle getBounds ()
  {
    return (Rectangle) this.clone();
  }

  public void add(int newx, int newy)
  {
    int x = this.x > newx ? newx : this.x;
    int y = this.y > newy ? newy : this.y;
    width = (this.x + width > newx ? this.x + width : newx) - x;
    height = (this.y + height > newy ? this.y + height : newy) - y;
    this.x = x;
    this.y = y;
  }

  public void add(Point pt)
  {
    add (pt.x, pt.y);
  }

  public void add(Rectangle r)
  {
    int x = this.x > r.x ? r.x : this.x;
    int y = this.y > r.y ? r.y : this.y;
    width = (this.x + width > r.x + r.width ? 
             this.x + width : r.x + r.width) - x;
    height = (this.y + height > r.y + r.height ?
              this.y + height : r.y + r.height) - y;
    this.x = x;
    this.y = y;
  }

  public boolean contains(int x, int y)
  {
    return (x >= this.x && x <= this.x + this.width
            && y >= this.y && y <= this.y + this.height);
  }   

  public boolean contains(int x, int y, int w, int h)
  {
    return (x >= this.x && x + w <= this.x + this.width
            && y >= this.y && y + h <= this.y + this.height);
  }

  public boolean contains(Point p)
  {
    return contains(p.x, p.y);
  }

  public boolean contains(Rectangle r)
  {
    return contains(r.x, r.y, r.width, r.height);
  }

  public boolean equals(Object obj)
  {
    if (obj instanceof Rectangle)
      {
	Rectangle r = (Rectangle) obj;
	return (r.x == x 
	        && r.y == y 
		&& r.width == width 
		&& r.height == height);
      }
    return false;
  }

  public double getHeight()
  {
    return (double) this.height;     
  }

  public Point getLocation()
  {
    return new Point(x,y);
  }

  public Dimension getSize()
  {
    return new Dimension(width, height);
  }

  public double getWidth()
  {
    return (double) this.width;
  }

  public double getX()
  {
    return (double) x;
  }

  public double getY()
  {
    return (double) y;
  }

  public void grow(int h, int v)
  {
    width += h;
    height += v;
  }

  /** @deprecated Use contains() instead. */
  public boolean inside(int x, int y)
  {
    return contains(x, y);
  }

  /** @specnote If there is no intersection, an empty rectangle at 0,0 
    *           is returned.
    */
  public Rectangle intersection(Rectangle r)
  {
    int newx = x < r.x ? r.x : x;
    int newy = y < r.y ? r.y : y;
    int neww = (x + width < r.x + r.width ?
        	x + width : r.x + r.width) - newx;
    int newh = (y + height < r.y + r.height ?
        	y + height : r.y + r.height) - newy;
    if (neww >= 0 && newh >= 0)
      return new Rectangle(newx, newy, neww, newh);
    else
      return new Rectangle(0, 0, 0, 0);
  }

  /** @specnote If the intersection is at an edge or corner only (an empty
    *           intersection with a non-zero location), false is returned.
    */
  public boolean intersects(Rectangle r)
  {
    int neww = (x + width < r.x + r.width ?
        	x + width : r.x + r.width) - (x < r.x ? r.x : x);
    int newh = (y + height < r.y + r.height ?
        	y + height : r.y + r.height) - (y < r.y ? r.y : y);
    return (neww > 0 && newh > 0);
  }

  public boolean isEmpty()
  {
    return (width > 0 && height > 0);
  }

  /** @deprecated Use setLocation() instead. */
  public void move(int x, int y)
  {
    setLocation(x, y);
  }

  public int outcode(double x, double y)
  {
    // FIXME
    return 0;
  }

  /** @deprecated Use setBounds() instead. */
  public void reshape(int x, int y, int width, int height)
  {
    setBounds(x, y, width, height);
  }

  /** @deprecated Use setSize() instead. */
  public void resize(int width, int height)
  {
    setSize(width, height);
  }

  public void setBounds(int x, int y, int width, int height)
  {
    this.x = x;
    this.y = y;
    this.width = width;
    this.height = height;
  }

  public void setBounds(Rectangle r)
  {
    this.x = r.x;
    this.y = r.y;
    this.width = r.width;
    this.height = r.height;     
  }

  public void setLocation(int x, int y)
  {
    this.x = x;
    this.y = y;
  }

  public void setLocation(Point p)
  {
    this.x = p.x;
    this.y = p.y;
  }

  public void setRect(double x, double y, double width, double height)
  {
    this.x = (int) x;
    this.y = (int) y;
    this.width = (int) width;
    this.height = (int) height;
  }

  public void setSize(Dimension d)
  {
    this.width = d.width;
    this.height = d.height;
  }

  public void setSize(int width, int height)
  {
    this.width = width;
    this.height = height;
  }

  public void translate(int x, int y)
  {
    x += x;
    y += y;
  }

  public Rectangle union(Rectangle r)
  {
    int newx = x > r.x ? r.x : x;
    int newy = y > r.y ? r.y : y;     
    int neww = (this.x + width > r.x + r.width ? 
               this.x + width : r.x + r.width) - newx;
    int newh = (this.y + height > r.y + r.height ?
        	this.y + height : r.y + r.height) - newy;
    return new Rectangle(newx, newy, neww, newh);
  }

  // Commented out until we have Rectangle2D
  /*
  public Rectangle2D createIntersection(Rectangle2D r)
  {
  }

  public Rectangle2D createUnion(Rectangle2D r)
  {
  }

  public Rectangle2D getBounds2D()
  {
  }
  */

  public String toString()
  {
    return getClass().getName() + "[x=" + x + ",y=" + y + ",width=" + width + 
           ",height=" + height + "]";
  }


}