Yahoo! UI Library

dom  2.3.0

Yahoo! UI Library > dom > YAHOO.util.Region

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Class YAHOO.util.Region

Known Subclasses:
YAHOO.util.Point
A region is a representation of an object on a grid. It is defined by the top, right, bottom, left extents, so is rectangular by default. If other shapes are required, this class could be extended to support it.

Constructor

YAHOO.util.Region ( t , r , b , l )
Parameters:
t <Int> the top extent
r <Int> the right extent
b <Int> the bottom extent
l <Int> the left extent

Properties

0 - Int

The region's left extent as index, for symmetry with set/getXY

1 - Int

The region's top extent as index, for symmetry with set/getXY

bottom - Int

The region's bottom extent

left - Int

The region's left extent

right - int

The region's right extent

top - Int

The region's top extent

Methods

contains

Boolean contains ( region )
Returns true if this region contains the region passed in
Parameters:
region <Region> The region to evaluate
Returns: Boolean
True if the region is contained with this region, else false

getArea

Int getArea ( )
Returns the area of the region
Returns: Int
the region's area

getRegion

static Region getRegion ( el )
Returns a region that is occupied by the DOM element
Parameters:
el <HTMLElement> The element
Returns: Region
The region that the element occupies

intersect

Region intersect ( region )
Returns the region where the passed in region overlaps with this one
Parameters:
region <Region> The region that intersects
Returns: Region
The overlap region, or null if there is no overlap

toString

void toString ( )
toString
Returns: void
string the region properties

union

Region union ( region )
Returns the region representing the smallest region that can contain both the passed in region and this region.
Parameters:
region <Region> The region that to create the union with
Returns: Region
The union region

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