Detailed Description

LayoutVisitor is used to position a tree of objects on a plane (the objects must implement the getParent()).

It uses a simple algorithm that positions the objects on a discrete array with distance 1 so that all leaves are equal distant from their neighbours. The positions are stored in a map that is provided by the getMap() method.

Author: ingo herwig ingo@.nosp@m.wemo.nosp@m.ve.co.nosp@m.m

Definition at line 25 of file LayoutVisitor.php.

Inheritance diagram for LayoutVisitor:

Public Member Functions
	__construct ()

	visit ($obj)

	getMap ()

	flip ()

Public Member Functions inherited from Visitor
	startIterator (NodeIterator $iterator)

	startArray ($array)

	doPreVisit ()

	doPostVisit ()

Public Attributes
const	MAPTYPE_HORIZONTAL = 0

const	MAPTYPE_VERTICAL = 1

Constructor & Destructor Documentation

◆ __construct()

__construct ( )

Constructor.

Definition at line 35 of file LayoutVisitor.php.

Member Function Documentation

◆ visit()

visit ( $obj )

Visit the current object in iteration and position it on the map.

Parameters

$obj	PersistentObject instance

Reimplemented from Visitor.

Definition at line 44 of file LayoutVisitor.php.

◆ getMap()

getMap ( )

Visit the current object in iteration and position it on the map.

Returns: The object map as assioziative array (key: object Id, value: Position). map["type"] = MAPTYPE_HORIZONTAL | MAPTYPE_VERTICAL

Definition at line 53 of file LayoutVisitor.php.

◆ flip()

flip ( )

Flip layout (x <-> y).

Definition at line 60 of file LayoutVisitor.php.

Member Data Documentation

◆ MAPTYPE_HORIZONTAL

const MAPTYPE_HORIZONTAL = 0

Definition at line 27 of file LayoutVisitor.php.

◆ MAPTYPE_VERTICAL

const MAPTYPE_VERTICAL = 1

Definition at line 28 of file LayoutVisitor.php.