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Class weblab.gauge.NeedleMeter 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----weblab.gauge.Meter
                                   |
                                   +----weblab.gauge.NeedleMeter
public class NeedleMeter
extends Meter
A meter gauge with a needle indicator. Derived from sample codes by Liam Relihan.

Variable Index

o needleColor
o valueColor
o zones

Constructor Index

o NeedleMeter()
Constructor for Needle class.
o NeedleMeter(double, double, double, double)
Constructor for Needle class.

Method Index

o drawMeter(Graphics)
draws the gauge in the background.
o getMinimumSize()
o getNeedleColor()
get the needle color
o getPreferredSize()
o setNeedleColor(Color)
set the needle color
o setZone(String, double, double, Color)
set a color zone, e.g.

Variables

o zones 
 public Vector zones
o needleColor 
 protected Color needleColor
o valueColor 
 protected Color valueColor

Constructors

o NeedleMeter 
 public NeedleMeter()
Constructor for Needle class.

o NeedleMeter 
 public NeedleMeter(double lo,
                    double hi,
                    double grad,
                    double val)
Constructor for Needle class.

Methods

o setZone 
 public void setZone(String zoneName,
                     double lowerBound,
                     double upperBound,
                     Color color)
set a color zone, e.g. a red "Danger" zone

o setNeedleColor 
 public void setNeedleColor(Color theColor)
set the needle color

o getNeedleColor 
 public Color getNeedleColor()
get the needle color

o drawMeter 
 protected void drawMeter(Graphics g)
draws the gauge in the background. This allows the reduction of flicker.

Overrides:
drawMeter in class Meter
o getMinimumSize 
 public Dimension getMinimumSize()
Overrides:
getMinimumSize in class Meter
o getPreferredSize 
 public Dimension getPreferredSize()
Overrides:
getPreferredSize in class Meter 
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