?? myrectangle.java
字號:
// MyRectangle.java
// MyRectangle is a MyShape subclass that represents a
// rectangle, including an implementation of the draw method
// for drawing the rectangle on a Graphics2D context.
package com.deitel.advjhtp1.drawing.model.shapes;
// Java core packages
import java.awt.*;
import java.awt.geom.*;
// third-party packages
import org.w3c.dom.*;
public class MyRectangle extends MyShape {
// draw MyRectangle on given Graphics2D context
public void draw( Graphics2D g2D )
{
// configure Graphics2D (gradient, color, etc.)
configureGraphicsContext( g2D );
// create Rectangle2D for drawing MyRectangle
Shape shape = new Rectangle2D.Float( getLeftX(),
getLeftY(), getWidth(), getHeight() );
// if shape is filled, draw filled shape
if ( isFilled() )
g2D.fill( shape );
else
g2D.draw( shape );
}
// return true if point falls within MyRectangle
public boolean contains( Point2D point )
{
Rectangle2D.Float rectangle = new Rectangle2D.Float(
getLeftX(), getLeftY(), getWidth(), getHeight() );
return rectangle.contains( point );
}
// get XML representation of MyRectangle
public Element getXML( Document document )
{
Element shapeElement = super.getXML( document );
shapeElement.setAttribute( "type", "MyRectangle" );
return shapeElement;
}
}
/***************************************************************
* (C) Copyright 2002 by Deitel & Associates, Inc. and *
* Prentice Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have *
* used their best efforts in preparing the book. These *
* efforts include the development, research, and testing of *
* the theories and programs to determine their effectiveness. *
* The authors and publisher make no warranty of any kind, *
* expressed or implied, with regard to these programs or to *
* the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for *
* incidental or consequential damages in connection with, or *
* arising out of, the furnishing, performance, or use of *
* these programs. *
***************************************************************/
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