Package eu.webtoolkit.jwt

Class WPolygonArea

java.lang.Object

eu.webtoolkit.jwt.WObject

eu.webtoolkit.jwt.WAbstractArea

eu.webtoolkit.jwt.WPolygonArea

public class WPolygonArea
extends WAbstractArea

An interactive area in a widget, specified by a polygon.

The area may be added to a WImage or WPaintedWidget to provide interactivity on a polygon area of the image. The polygon is specified in pixel coordinates, and uses an even-odd winding rule (overlaps create holes).

The polygon area corresponds to the HTML <area shape="poly"> tag.

See Also:

• WImage.addArea(WAbstractArea area)
• WPaintedWidget.addArea(WAbstractArea area)
• WCircleArea
• WRectArea

Nested Class Summary

Nested classes/interfaces inherited from class eu.webtoolkit.jwt.WObject

WObject.FormData

Constructor Summary

Constructors

Constructor	Description
WPolygonArea()	Creates an empty polygon.
WPolygonArea(List<WPoint> points)	Creates a polygon area with given vertices.

Method Summary

Modifier and Type	Method	Description
void	addPoint(double x, double y)	Adds a point.
void	addPoint(int x, int y)	Adds a point.
void	addPoint(WPoint point)	Adds a point.
void	addPoint(WPointF point)	Adds a point.
List<WPointF>	getPointFs()	Returns the polygon vertices.
List<WPoint>	getPoints()	Returns the polygon vertices.
protected String	getUpdateAreaCoordsJS()
void	setPoints(List<WPoint> points)	Sets the polygon vertices.
protected boolean	updateDom(DomElement element, boolean all)

Methods inherited from class eu.webtoolkit.jwt.WAbstractArea

addStyleClass, addStyleClass, clicked, doubleClicked, enterPressed, escapePressed, getAlternateText, getCursor, getJsRef, getLink, getStyleClass, getToolTip, isHole, isTransformable, keyPressed, keyWentDown, keyWentUp, mouseDragged, mouseMoved, mouseWentDown, mouseWentOut, mouseWentOver, mouseWentUp, mouseWheel, removeStyleClass, removeStyleClass, setAlternateText, setCursor, setCursor, setCursor, setHole, setLink, setObjectName, setStyleClass, setToolTip, setTransformable

Methods inherited from class eu.webtoolkit.jwt.WObject

getId, getObjectName, remove, setFormData, tr

Methods inherited from class java.lang.Object

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

Constructor Details

WPolygonArea

public WPolygonArea()

Creates an empty polygon.

Defines an empty polygon.

WPolygonArea

public WPolygonArea(List<WPoint> points)

Creates a polygon area with given vertices.

The polygon is defined with vertices corresponding to points. The polygon is closed by connecting the last point with the first point.

Method Details

addPoint

public void addPoint(int x,
 int y)

Adds a point.

addPoint

public void addPoint(double x,
 double y)

Adds a point.

addPoint

public void addPoint(WPoint point)

Adds a point.

addPoint

public void addPoint(WPointF point)

Adds a point.

setPoints

public void setPoints(List<WPoint> points)

Sets the polygon vertices.

The polygon is defined with vertices corresponding to points. The polygon is closed by connecting the last point with the first point.

getPointFs

public List<WPointF> getPointFs()

Returns the polygon vertices.

See Also:

• setPoints(List points)
• getPoints()

getPoints

public List<WPoint> getPoints()

Returns the polygon vertices.

See Also:

• setPoints(List points)
• getPointFs()

updateDom

protected boolean updateDom(DomElement element,
 boolean all)

Overrides:

updateDom in class WAbstractArea

getUpdateAreaCoordsJS

protected String getUpdateAreaCoordsJS()

Specified by:

getUpdateAreaCoordsJS in class WAbstractArea