info.monitorenter.gui.chart.traces.painters
Class TracePainterPolyline

java.lang.Object
  info.monitorenter.gui.chart.traces.painters.ATracePainter
      info.monitorenter.gui.chart.traces.painters.TracePainterPolyline

All Implemented Interfaces:

IPointPainter, ITracePainter, Serializable, Comparable

public class TracePainterPolyline
extends ATracePainter

A trace painter that increases performance by summing up all points to render for a paint iteration (submitted by paintPoint(int, int, int, int, Graphics2D, TracePoint2D) invocations between startPaintIteration(Graphics2D, ITrace2D) and endPaintIteration(Graphics2D)) and only invoking only one polyline paint for a paint call of the corresponding Chart2D.

Version:

$Revision: 1.9 $

Author:

Achim Westermann

See Also:

Serialized Form

Constructor Summary

TracePainterPolyline()
Default Constructor.

Method Summary

void	endPaintIteration(Graphics2D g2d) Invoked to inform implementations that a paint iteration ends for the corresponding ITrace2D.
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	startPaintIteration(Graphics2D g2d, ITrace2D trace) Invoked to inform implementations that a paint iteration starts for the corresponding ITrace2D.

Methods inherited from class info.monitorenter.gui.chart.traces.painters.ATracePainter

compareTo, discontinue, equals, getPreviousPoint, getPreviousX, getPreviousY, hashCode

Methods inherited from class java.lang.Object

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

Constructor Detail

TracePainterPolyline

public TracePainterPolyline()

Default Constructor.

Method Detail

endPaintIteration

public void endPaintIteration(Graphics2D g2d)

Description copied from interface: ITracePainter

Invoked to inform implementations that a paint iteration ends for the corresponding ITrace2D.

Specified by:

endPaintIteration in interface ITracePainter

Overrides:

endPaintIteration in class ATracePainter

Parameters:

g2d - provided in case pending paint operations have to be performed.

See Also:

ITracePainter.endPaintIteration(java.awt.Graphics2D)

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

Overrides:

paintPoint in class ATracePainter

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:

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

startPaintIteration

public void startPaintIteration(Graphics2D g2d,
                                ITrace2D trace)

Description copied from interface: ITracePainter

Invoked to inform implementations that a paint iteration starts for the corresponding ITrace2D.

Specified by:

startPaintIteration in interface ITracePainter

Overrides:

startPaintIteration in class ATracePainter

Parameters:

g2d - provided in case pending paint operations have to be performed.

trace - the TracePoint2D to paint in this iteration.

See Also:

ATracePainter.startPaintIteration(java.awt.Graphics2D, info.monitorenter.gui.chart.ITrace2D)