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AWT/Swing merge from GNU Classpath.

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From-SVN: r56147
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Bryce McKinlay 2002-08-09 04:26:17 +00:00 • committed by Bryce McKinlay
parent 097684ce62
commit 7bde45b2eb
490 changed files with 86038 additions and 9753 deletions
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218
libjava/java/awt/Point.java
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@ -1,4 +1,5 @@
/* Copyright (C) 1999, 2002 Free Software Foundation
/* Point.java -- represents a point in 2-D space
Copyright (C) 1999, 2002 Free Software Foundation
This file is part of GNU Classpath.
@ -36,144 +37,209 @@ exception statement from your version. */
package java.awt;
import java.awt.geom.Point2D;
/* Written using "Java Class Libraries", 2nd edition, plus online
* API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Believed complete and correct, except that neither toString
* nor hashCode have been compared with JDK output.
*/
import java.awt.geom.Point2D;
import java.io.Serializable;
/**
* This class represents a point on the screen using cartesian coordinates.
* Remember that in screen coordinates, increasing x values go from left to
* right, and increasing y values go from top to bottom.
*
* <p>There are some public fields; if you mess with them in an inconsistent
* manner, it is your own fault when you get invalid results. Also, this
* class is not threadsafe.
*
* @author Per Bothner <bothner@cygnus.com>
* @author Aaron M. Renn (arenn@urbanophile.com)
* @date February 8, 1999.
* @author Aaron M. Renn <arenn@urbanophile.com>
* @author Eric Blake <ebb9@email.byu.edu>
* @since 1.0
* @status updated to 1.4
*/
public class Point extends Point2D implements java.io.Serializable
public class Point extends Point2D implements Serializable
{
/**
* @serial The X coordinate of the point.
* Compatible with JDK 1.0+.
*/
private static final long serialVersionUID = -5276940640259749850L;
/**
* The x coordinate.
*
* @see #getLocation()
* @see #move(int, int)
* @serial the X coordinate of the point
*/
public int x;
/**
* @serial The Y coordinate of the point.
* The y coordinate.
*
* @see #getLocation()
* @see #move(int, int)
* @serial The Y coordinate of the point
*/
public int y;
/**
* Initializes a new instance of <code>Point</code> representing the
* coordiates (0,0).
*
* @since 1.1
*/
public Point () { }
public Point()
{
}
/**
* Initializes a new instance of <code>Point</code> with coordinates
* identical to the coordinates of the specified points.
*
* @param point The point to copy the coordinates from.
* @param point the point to copy the coordinates from
* @throws NullPointerException if p is null
*/
public Point (Point p) { this.x = p.x; this.y = p.y; }
public Point(Point p)
{
x = p.x;
y = p.y;
}
/**
* Initializes a new instance of <code>Point</code> with the specified
* coordinates.
*
* @param x The X coordinate of this point.
* @param y The Y coordinate of this point.
* @param x the X coordinate
* @param y the Y coordinate
*/
public Point (int x, int y) { this.x = x; this.y = y; }
/**
* Tests whether or not this object is equal to the specified object.
* This will be true if and only if the specified objectj:
* <p>
* <ul>
* <li>Is not <code>null</code>.
* <li>Is an instance of <code>Point</code>.
* <li>Has X and Y coordinates equal to this object's.
* </ul>
*
* @param obj The object to test against for equality.
*
* @return <code>true</code> if the specified object is equal to this
* object, <code>false</code> otherwise.
*/
public boolean equals (Object obj)
public Point(int x, int y)
{
if (! (obj instanceof Point))
return false;
Point p = (Point) obj;
return this.x == p.x && this.y == p.y;
this.x = x;
this.y = y;
}
/**
* Returns a hash value for this point.
* Get the x coordinate.
*
* @param A hash value for this point.
* @return the value of x, as a double
*/
public int hashCode () { return x ^ y; }
public double getX()
{
return x;
}
/**
* Returns the location of this object as a point. A pretty useless
* method. It is included to mimic the <code>getLocation</code> method
* in component.
* Get the y coordinate.
*
* @return This point.
* @return the value of y, as a double
*/
public Point getLocation () { return new Point(this); }
public double getY()
{
return y;
}
/**
* Sets this object's coordinates to the specified values. This method
* is identical to the <code>setLocation(int, int)</code> method.
* Returns the location of this point. A pretty useless method, as this
* is already a point.
*
* @param x The new X coordinate.
* @param y The new Y coordinate.
* @return a copy of this point
* @see #setLocation(Point)
* @since 1.1
*/
public void move (int x, int y) { this.x = x; this.y = y; }
public Point getLocation()
{
return new Point(x, y);
}
/**
* Sets this object's coordinates to match those of the specified point.
*
* @param p the point to copy the coordinates from
* @throws NullPointerException if p is null
* @since 1.1
*/
public void setLocation(Point p)
{
x = p.x;
y = p.y;
}
/**
* Sets this object's coordinates to the specified values. This method
* is identical to the <code>move()</code> method.
*
* @param x The new X coordinate.
* @param y The new Y coordinate.
* @param x the new X coordinate
* @param y the new Y coordinate
*/
public void setLocation (int x, int y) { this.x = x; this.y = y; }
public void setLocation(int x, int y)
{
this.x = x;
this.y = y;
}
/**
* Sets this object's coordinates to match those of the specified point.
* Sets this object's coordinates to the specified values. This method
* performs normal casting from double to int, so you may lose precision.
*
* @param point The point to copy the coordinates from.
* @param x the new X coordinate
* @param y the new Y coordinate
*/
public void setLocation (Point pt) { this.x = pt.x; this.y = pt.y; }
public void setLocation(double x, double y)
{
this.x = (int) x;
this.y = (int) y;
}
/**
* Changes the coordinates of this point such that the specified
* Sets this object's coordinates to the specified values. This method
* is identical to the <code>setLocation(int, int)</code> method.
*
* @param x the new X coordinate
* @param y the new Y coordinate
*/
public void move(int x, int y)
{
this.x = x;
this.y = y;
}
/**
* Changes the coordinates of this point such that the specified
* <code>dx</code> parameter is added to the existing X coordinate and
* <code>dy</code> is added to the existing Y coordinate.
*
* @param dx The amount to add to the X coordinate.
* @param dy The amount to add to the Y coordinate.
* @param dx the amount to add to the X coordinate
* @param dy the amount to add to the Y coordinate
*/
public void translate (int x, int y) { this.x += x; this.y += y; }
/**
* Returns a string representation of this object.
*
* @return A string representation of this object.
*/
public String toString ()
public void translate(int dx, int dy)
{
return getClass().getName() + "[x:"+x+",y:"+y+']';
x += dx;
y += dy;
}
public double getX() { return x; }
public double getY() { return y; }
/**
* Tests whether or not this object is equal to the specified object.
* This will be true if and only if the specified object is an instance
* of Point2D and has the same X and Y coordinates.
*
* @param obj the object to test against for equality
* @return true if the specified object is equal
*/
public boolean equals(Object obj)
{
if (! (obj instanceof Point2D))
return false;
Point2D p = (Point2D) obj;
return x == p.getX() && y == p.getY();
}
public void setLocation (double x, double y)
{ this.x = (int) x; this.y = (int) y; }
}
/**
* Returns a string representation of this object. The format is:
* <code>getClass().getName() + "[x=" + x + ",y=" + y + ']'</code>.
*
* @return a string representation of this object
*/
public String toString()
{
return getClass().getName() + "[x=" + x + ",y=" + y + ']';
}
} // class Point