RE: [jCharts-users] Gradient on each bar rather than across entire graph

[Chris M. <ch...@de...>]

Yes, as you can see from the sample code the dataset index is passed in.
Then if you want to count what bar you are up to then you just have a member
var to do that, the class is called on every bar draw. I've done this when I
wanted the bar colour to change when I reached a 'future' date.

C  

> -----Original Message-----
> From: jch...@li... 
> [mailto:jch...@li...] On Behalf 
> Of Nathaniel G. Auvil
> Sent: Tuesday, 21 September 2004 8:48 a.m.
> To: jch...@li...
> Subject: Re: [jCharts-users] Gradient on each bar rather than 
> across entire graph
> 
> 
> why set the Paint n times, when you can set it once?  The 
> thought at the time was there would be a single Paint per dataset
> 
> you could just have a member which counts?  I think the index 
> is passed in too.
> 
> 
> --- Travis Reeder <tr...@gm...> wrote:
> 
> > I don't think this will work very well for me since the 
> paints are set 
> > dynamically while creating the graph, so how would I get at which 
> > paint is for which bar from the preRender method?  I would need a
> > axisValueRenderEvent.getPaint() or something.
> > 
> > Why doesn't jcharts just set the paint for each bar it draws?  Or 
> > another way of putting that is why does it have the current 
> behaviour?
> > 
> > Travis
> > 
> > 
> > On Mon, 13 Sep 2004 14:34:45 +1200, Chris McKay 
> <ch...@de...> wrote:
> > > Of course you wouldn't set the Paint again!! Better code 
> follows...
> > > 
> > > 
> > > 
> > > public void preRender( AxisValueRenderEvent 
> axisValueRenderEvent ) {
> > >         // overwrite color if range test
> > >         double value = 
> > > axisValueRenderEvent.getiAxisChartDataSet().getValue(
> > > 
> > > axisValueRenderEvent.getDataSetIndex(),
> > > 
> > > axisValueRenderEvent.getValueIndex()
> > >                                                 );
> > >         if (value > loRange && value < hiRange) {
> > >                 axisValueRenderEvent.getGraphics2D().setPaint(
> > > this.inRangePaint );
> > >         }
> > > }
> > > 
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