info.monitorenter.gui.chart.pointpainters
Class PointPainterVerticalBar

java.lang.Object
  info.monitorenter.gui.chart.pointpainters.PointPainterVerticalBar

All Implemented Interfaces:

IPointPainter, Serializable

public class PointPainterVerticalBar
extends Object
implements IPointPainter

Renders points by painting a bar with choosable width for each point to show.

Bars are placed around the x value to render: the middle of the bar in x dimension is the exact x value.

Version:

$Revision: 1.7 $

Author:

Achim Westermann

See Also:

Serialized Form

Constructor Summary

PointPainterVerticalBar(Chart2D chart)
Creates an instance with a default bar width size of 4.

PointPainterVerticalBar(int barWidth, Chart2D chart)
Creates an instance with the bar width.

Method Summary

int	getBarWidth() Returns the diameter of the discs to paint in pixel.
void	paintPoint(int absoluteX, int absoluteY, int nextX, int nextY, Graphics2D g, TracePoint2D original) Paint the point given by absolute coordinates on the given graphic context.
void	setBarWidth(int barWidth) Sets the width of the bars to paint in pixel.

Methods inherited from class java.lang.Object

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

Constructor Detail

PointPainterVerticalBar

public PointPainterVerticalBar(Chart2D chart)

Creates an instance with a default bar width size of 4.

Parameters:

chart - the corresponding chart for bound information.

PointPainterVerticalBar

public PointPainterVerticalBar(int barWidth,
                               Chart2D chart)

Creates an instance with the bar width.

Parameters:

barWidth - the bar width in pixel to use.

chart - the corresponding chart for bound information.

Method Detail

getBarWidth

public int getBarWidth()

Returns the diameter of the discs to paint in pixel.

Returns:

the diameter of the discs to paint in pixel.

paintPoint

public void paintPoint(int absoluteX,
                       int absoluteY,
                       int nextX,
                       int nextY,
                       Graphics2D g,
                       TracePoint2D original)

Description copied from interface: IPointPainter

Paint the point given by absolute coordinates on the given graphic context.

The next coordinates are also provided to allow to check how much distance is available for the graphic representation of the current point.

Note that by contract the TracePoint2D argument is only guaranteed to be non-null in case the instance is used as a painter for ITracePainter subtypes. If you plan to use your implementation also for a subcomponent of an IErrorBarPainter (e.g. IErrorBarPainter.setConnectionPainter(IPointPainter)) then you have to implement "null - safe" for that argument.

Specified by:

paintPoint in interface IPointPainter

Parameters:

absoluteX - the ready to use x value for the point to paint.

absoluteY - the ready to use y value for the point to paint.

nextX - the ready to use next x value for the point to paint.

nextY - the ready to use next y value for the point to paint.

g - the graphic context to paint on.

original - just for information, for painting this should be irrelevant and it should not be changed too!

See Also:

IPointPainter.paintPoint(int, int, int, int, java.awt.Graphics2D, info.monitorenter.gui.chart.TracePoint2D)

setBarWidth

public void setBarWidth(int barWidth)

Sets the width of the bars to paint in pixel.

Parameters:

barWidth - the width of the bars to paint in pixel.