[jCharts-developers] [ jcharts-Bugs-1028516 ] LineChart shape cannot be null

[SourceForge.net <no...@so...>]

Bugs item #1028516, was opened at 2004-09-15 14:10
Message generated for change (Comment added) made by momat
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=116161&aid=1028516&group_id=16161

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: MoMaT (momat)
Assigned to: Nathaniel G. Auvil (nathaniel_auvil)
Summary: LineChart shape cannot be null

Initial Comment:
The following code from userGuide 0.3.0, true for 0.7.5
is no longer valid for 1.0.0-alpha-1 if the legend is used:

Shape[] shapes= { PointChartProperties.SHAPE_CIRCLE,
null };
LineChartProperties lineChartProperties= new
LineChartProperties( strokes, shapes );

Giving the one of shapes array shape value of null (to
render a flat line without any triangles, circles or
such) and setting the legend visible, makes the chart
impossible to render:
java.lang.NullPointerException
	at org.krysalis.jcharts.Legend.render(Unknown Source)

I quess the new way of rendering the lineChart icon in
a legend (line+shape instead of box) is the cause of
this, since it is probably not null protected.

----------------------------------------------------------------------

>Comment By: MoMaT (momat)
Date: 2004-10-22 18:08

Message:
Logged In: YES 
user_id=829758

I've applied such a temporary patch in Legend.java line 506:
>>
  if( this.shapes.size() > 0 && this.shapes.size() >
labelIndex )
<<
  if( chartType != ChartType.LINE && this.shapes.size() > 0
&& this.shapes.size() > labelIndex )

It preserves v.0.7 legend behaviour.

BTW, doesn't making the paint transparent prevent the line
from being drawn?

----------------------------------------------------------------------

Comment By: Nathaniel G. Auvil (nathaniel_auvil)
Date: 2004-10-22 17:36

Message:
Logged In: YES 
user_id=118938

Half way to having a fix to this. 

----------------------------------------------------------------------

Comment By: Nathaniel G. Auvil (nathaniel_auvil)
Date: 2004-10-19 22:16

Message:
Logged In: YES 
user_id=118938

A work-around for this would be to just use a shape and make
the Paint transparent.


----------------------------------------------------------------------

Comment By: Nathaniel G. Auvil (nathaniel_auvil)
Date: 2004-10-18 02:38

Message:
Logged In: YES 
user_id=118938

Yeah, i see the legend wants to have a Shape in there.  I
will make a fix for this.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=116161&aid=1028516&group_id=16161