edu.umd.cs.jazz.scenegraph
Class ZLayoutManagerTree

java.lang.Object
  |
  +--edu.umd.cs.jazz.scenegraph.ZLayoutManagerTree

public class ZLayoutManagerTree

extends java.lang.Object

implements ZLayoutManager

ZLayoutManagerTree implements a generic tree layout manager that can layout hierarchical Jazz objects.

Field Summary

protected static java.util.Hashtable	areaManager
protected static int	currentHeadStyle
protected static int	currentOrientation
protected static float	currentXSpacing
protected static float	currentYSpacing
static float	DEFAULT_LeftMostPos
static float	DEFAULT_TopMostPos
static float	DEFAULT_XSpacing
static float	DEFAULT_YSpacing
static int	Heading_IN
static int	Heading_OUT
static int	Heading_SIDE
static int	link_ANGLEDLINE
static int	link_STRAIGHTLINE
protected static boolean	linkVisible
static int	Orientation_LEFTRIGHT
static int	Orientation_TOPDOWN

Constructor Summary

ZLayoutManagerTree()
Default constructor, calls a longer version with all the default settings.

ZLayoutManagerTree(int orientation, int headingStyle, boolean showLink, int linkStyle)
Constructor with all the custom options

Method Summary

void	doLayout(ZNode node) The tree layout algorithm.
static int	getCurrentHeadStyle()
static int	getCurrentOrientation() Get the current orientation.
static float	getCurrentXSpacing()
static float	getCurrentYSpacing()
static int	getZLinkStyle() Get the value of ZLinkStyle.
static boolean	setCurrentHeadingStyle(int h)
static boolean	setCurrentOrientation(int orientation) Set the current orientation.
static boolean	setCurrentXSpacing(float x)
static boolean	setCurrentYSpacing(float y)
static boolean	setZLinkStyle(int v) Set the value of ZLinkStyle.

Methods inherited from class java.lang.Object

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

Field Detail

Orientation_TOPDOWN

public static final int Orientation_TOPDOWN

Orientation_LEFTRIGHT

public static final int Orientation_LEFTRIGHT

link_STRAIGHTLINE

public static final int link_STRAIGHTLINE

link_ANGLEDLINE

public static final int link_ANGLEDLINE

currentOrientation

protected static int currentOrientation

Heading_IN

public static final int Heading_IN

Heading_OUT

public static final int Heading_OUT

Heading_SIDE

public static final int Heading_SIDE

currentHeadStyle

protected static int currentHeadStyle

DEFAULT_XSpacing

public static final float DEFAULT_XSpacing

DEFAULT_YSpacing

public static final float DEFAULT_YSpacing

currentXSpacing

protected static float currentXSpacing

currentYSpacing

protected static float currentYSpacing

DEFAULT_LeftMostPos

public static final float DEFAULT_LeftMostPos

DEFAULT_TopMostPos

public static final float DEFAULT_TopMostPos

areaManager

protected static java.util.Hashtable areaManager

linkVisible

protected static boolean linkVisible

Constructor Detail

ZLayoutManagerTree

public ZLayoutManagerTree()

Default constructor, calls a longer version with all the default settings.

ZLayoutManagerTree

public ZLayoutManagerTree(int orientation,
                          int headingStyle,
                          boolean showLink,
                          int linkStyle)

Constructor with all the custom options

Parameters:

orientation - the orientation style

headingStyle - the heading style

showLink - switch to control whether link is visible

linkStyle - the link style

Method Detail

setCurrentOrientation

public static boolean setCurrentOrientation(int orientation)

Set the current orientation. If the orientation is not supported, nothing will happen.

Parameters:

orientation - the orientation want to set

Returns:

true if orientation set, false if orientation not supported.

getCurrentOrientation

public static int getCurrentOrientation()

Get the current orientation.

Returns:

returns the current orientation for this tree

setCurrentHeadingStyle

public static boolean setCurrentHeadingStyle(int h)

Parameters:

h - the heading style want to set

Returns:

true if set successfuly, false otherwise

getCurrentHeadStyle

public static int getCurrentHeadStyle()

Returns:

the current heading style

setCurrentXSpacing

public static boolean setCurrentXSpacing(float x)

Parameters:

x - the value for x spacing -- horizontal spacing

Returns:

true if set successfuly, false otherwise

setCurrentYSpacing

public static boolean setCurrentYSpacing(float y)

Parameters:

y - the value for y spacing -- horizontal spacing

Returns:

true if set successfuly, false otherwise

getCurrentXSpacing

public static float getCurrentXSpacing()

Returns:

current x spacing

getCurrentYSpacing

public static float getCurrentYSpacing()

Returns:

current y spacing

getZLinkStyle

public static int getZLinkStyle()

Get the value of ZLinkStyle.

Returns:

Value of ZLinkStyle.

setZLinkStyle

public static boolean setZLinkStyle(int v)

Set the value of ZLinkStyle.

Parameters:

v - Value to assign to ZLinkStyle.

Returns:

true if set successfuly

doLayout

public void doLayout(ZNode node)

The tree layout algorithm. Layout will place this node at anchor place first, and layout all its children alone the base line, and translate them so that this node will sit in the middle (according to heading style.)

Specified by:

doLayout in interface ZLayoutManager

Parameters:

node - the node that needs to lay out its children