org.jdrawing
Class TransformingDrawingRenderer

java.lang.Object
  org.jdrawing.TransformingDrawingRenderer

All Implemented Interfaces:

DrawingElementRenderer, DrawingRenderer

public class TransformingDrawingRenderer

extends java.lang.Object

implements DrawingRenderer, DrawingElementRenderer

This implementation of DrawingElementRenderer allows user to apply affine transform to drawing. It actually does not render any elements but delegates rendering requests to another element renderer.

Constructor Summary

TransformingDrawingRenderer(java.awt.geom.AffineTransform transform, DrawingRenderer renderer)
Returns a TransformingDrawingElementRenderer with given transform and renderer.

Method Summary

boolean	elementContains(java.lang.Object element, java.awt.geom.Point2D point) Tests if the given element contains the given point.
boolean	elementIntersects(java.lang.Object element, java.awt.geom.Rectangle2D rectangle) Tests if the given element intersects with the given rectangle.
java.awt.Rectangle	getElementBounds(java.lang.Object element) Gets the bounding box for the element.
java.awt.geom.Rectangle2D	getElementBounds2D(java.lang.Object element) Return the high precision bounding box of the element.
DrawingElementRenderer	getElementRenderer(java.lang.Object element) Gets DrawingElementRenderer to be used to render specified element.
DrawingRenderer	getRenderer() Gets the DrawingElementRenderer which is used by this renderer to delegate rendering requests to.
java.awt.geom.AffineTransform	getTransform() Gets the AffineTransform used by this transforming renderer.
void	paintDrawingElement(java.awt.Graphics graphics, java.lang.Object element) Paints the given element.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransformingDrawingRenderer

public TransformingDrawingRenderer(java.awt.geom.AffineTransform transform,
                                   DrawingRenderer renderer)

Returns a TransformingDrawingElementRenderer with given transform and renderer.

Parameters:

transform - an AffineTransform to be applied to drawing

renderer - a DrawingElementRenderer which all rendering requests will be delegated to

Method Detail

getTransform

public java.awt.geom.AffineTransform getTransform()

Gets the AffineTransform used by this transforming renderer.

Returns:

transform used by this renderer

getRenderer

public DrawingRenderer getRenderer()

Gets the DrawingElementRenderer which is used by this renderer to delegate rendering requests to.

Returns:

renderer used to delegate rendering requests

getElementRenderer

public DrawingElementRenderer getElementRenderer(java.lang.Object element)

Description copied from interface: DrawingRenderer

Gets DrawingElementRenderer to be used to render specified element.

Specified by:

getElementRenderer in interface DrawingRenderer

Parameters:

element - drawing element

Returns:

DrawingElementRenderer for the given element

paintDrawingElement

public void paintDrawingElement(java.awt.Graphics graphics,
                                java.lang.Object element)

Paints the given element.

Specified by:

paintDrawingElement in interface DrawingElementRenderer

Parameters:

graphics - graphics context to use for painting

element - element to be painted

Throws:

java.lang.IllegalArgumentException - if graphics is not instance of Graphics2D

getElementBounds

public java.awt.Rectangle getElementBounds(java.lang.Object element)

Description copied from interface: DrawingElementRenderer

Gets the bounding box for the element. If the element is unbounded then this method returns null.

Specified by:

getElementBounds in interface DrawingElementRenderer

Parameters:

element - element to be queried for bounding box

Returns:

bounding box of the element or null is the element is unbounded

getElementBounds2D

public java.awt.geom.Rectangle2D getElementBounds2D(java.lang.Object element)

Description copied from interface: DrawingElementRenderer

Return the high precision bounding box of the element. If the element is unbounded then this method returns null.

Specified by:

getElementBounds2D in interface DrawingElementRenderer

Parameters:

element - element to be queried for bounding box

Returns:

high precision bounding box of the element or null is the element is unbounded

elementIntersects

public boolean elementIntersects(java.lang.Object element,
                                 java.awt.geom.Rectangle2D rectangle)

Tests if the given element intersects with the given rectangle.

Specified by:

elementIntersects in interface DrawingElementRenderer

Parameters:

element - element to be checked for intersection

rectangle - rectangle to be checked for intersection

Returns:

true the given element intersects with the given rectangle; false otherwise

Throws:

java.lang.IllegalArgumentException - if rectangle is null

elementContains

public boolean elementContains(java.lang.Object element,
                               java.awt.geom.Point2D point)

Tests if the given element contains the given point.

Specified by:

elementContains in interface DrawingElementRenderer

Parameters:

element - element to be checked

point - point to be checked

Returns:

true the given element containes the given point; false otherwise

Throws:

java.lang.IllegalArgumentException - if point is null