com.jidesoft.gauge
Class DefaultNeedleRenderer

java.lang.Object
  com.jidesoft.gauge.DefaultNeedleRenderer

All Implemented Interfaces:

NeedleRenderer

public class DefaultNeedleRenderer
extends Object
implements NeedleRenderer

The usual renderer for a needle. By recognising a NeedleStyle, this class is already quite configurable, so you should not normally need to define a custom renderer.

Constructor Summary

DefaultNeedleRenderer()

Method Summary

Shape

paintNeedle(Graphics2D g2d, AbstractGauge m, Double value, double x, double y, double angle, double radius, NeedleStyle style) Paints the pointer in the centre of the display

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultNeedleRenderer

public DefaultNeedleRenderer()

Method Detail

paintNeedle

public Shape paintNeedle(Graphics2D g2d,
                         AbstractGauge m,
                         Double value,
                         double x,
                         double y,
                         double angle,
                         double radius,
                         NeedleStyle style)

Paints the pointer in the centre of the display

Specified by:

paintNeedle in interface NeedleRenderer

Parameters:

g2d - the graphics context into which we should paint

x - the x coordinate of the centre of the dial

y - the y coordinate of the centre of the dial

angle - the angle at which to draw the pointer in degrees

radius - the radius of the dial

m - the Meter component onto which the needle will be painted

style - the needle style, which provides preferred styling details. A renderer should respect these preferences but on occasions may have good reason to override them.