net.sourceforge.jeuclid.elements.support
Class ElementListSupport

java.lang.Object
  net.sourceforge.jeuclid.elements.support.ElementListSupport

public final class ElementListSupport
extends Object

Class to support Lists of MathElements.

This class can be used by all elements that have some kinf of a list of children that they need to handle in a row-like manner.

Version:

$Revision: 310 $

Author:

Max Berger

Method Summary

static List<JEuclidElement>	createListOfChildren(Node parent) Creates a list of children for the given MathElement.
static void	fireChangeForSubTree(List<JEuclidElement> elements) Calls ChangeTrackingInterface.fireChangeForSubTree() on all the given elements.
static float	getAscentHeight(Graphics2D g, List<JEuclidElement> elements) Retrieve the maximum ascent height of the list.
static float	getDescentHeight(Graphics2D g, List<JEuclidElement> elements) Retrieve the maximum descent height of the list.
static float	getHeight(Graphics2D g, List<JEuclidElement> elements) Retrieve the total height of the list.
static float	getWidth(Graphics2D g, List<JEuclidElement> elements) Retrieve the total witdth of the list.
static void	paint(Graphics2D g, float posX, float posY, List<JEuclidElement> elements) Paint all elements in a row-like fashion.

Methods inherited from class java.lang.Object

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

Method Detail

createListOfChildren

public static List<JEuclidElement> createListOfChildren(Node parent)

Creates a list of children for the given MathElement.

Parameters:

parent - the parent element.

Returns:

list of Children.

getAscentHeight

public static float getAscentHeight(Graphics2D g,
                                    List<JEuclidElement> elements)

Retrieve the maximum ascent height of the list.

Parameters:

g - Graphics2D context to use.

elements - List of elements.

Returns:

the max ascent height.

getDescentHeight

public static float getDescentHeight(Graphics2D g,
                                     List<JEuclidElement> elements)

Retrieve the maximum descent height of the list.

Parameters:

g - Graphics2D context to use.

elements - List of elements.

Returns:

the max descent height.

getHeight

public static float getHeight(Graphics2D g,
                              List<JEuclidElement> elements)

Retrieve the total height of the list.

Parameters:

g - Graphics2D context to use.

elements - List of elements.

Returns:

thetotal height.

getWidth

public static float getWidth(Graphics2D g,
                             List<JEuclidElement> elements)

Retrieve the total witdth of the list.

Parameters:

g - Graphics2D context to use.

elements - List of elements.

Returns:

the total width.

paint

public static void paint(Graphics2D g,
                         float posX,
                         float posY,
                         List<JEuclidElement> elements)

Paint all elements in a row-like fashion.

Parameters:

g - Graphics2D context to use.

elements - List of elements.

posX - x-origin to use for painting.

posY - y-origin to use for painting.

fireChangeForSubTree

public static void fireChangeForSubTree(List<JEuclidElement> elements)

Calls ChangeTrackingInterface.fireChangeForSubTree() on all the given elements.

Parameters:

elements - a list of elements to fire the change on.