RE: [flexcoders] various font/callout weirdness with piechart

Fri, 16 Jun 2006 10:47:50 -0700

 
 
 
 
The insideWithCallout logic says
    1. try and place all the laels inside the pie at the default font-size.
    2. if the labels overlap each other, try scaling them down so they won't collide anymore.
    3. if you have to scale them down below some lower limit, pull them out instead and make a callout out of them
 
That lower limit is defined by the insideLabelSizeLimit style on PieSeries.  It's default value is 9. When you set the PieSeries default font-size to 8, then...well, every label is below the lower limit, and gets turned into a callout.  Slightly odd behavior, I'll admit, but easy to solve in your code.
 
When I set the font up to 30pt, I get a pie that behaves more or less as expected.  Can you include more detail on what you're seeing?
 
Ely.
 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Jason
Sent: Friday, June 16, 2006 10:26 AM
To: [email protected]
Subject: [flexcoders] various font/callout weirdness with piechart

I've noticed a few different kinds of weirdness with pie charts and fonts.  Take the example below:

<?xml version="1.0" encoding="utf-8"?>
<Application xmlns="http://www.adobe.com/2006/mxml" layout="absolute">
  <Style>
    PieSeries{
      font-size: 10pt;
    }
  </Style>

    <Panel width="100%" height="100%" title="data based renderers" >
        <PieChart width="100%" height="100%">
          <dataProvider>
            <Array>
              <Number>29</Number>
           &nb! sp;  <Number>99</Number>
              <Number>9999</Number>
            </Array>
          </dataProvider>
          <series>
            <PieSeries labelPosition="insideWithCallout"/>
          </series>
        </PieChart>
    </Panel>
 
</Application>

Resize that around and it looks pretty normal (at least, in 1600x1200).  The smallest pie piece gets callout and the other two don't.  Now, turn the font size down to, say, 8pt.  Notice that this makes the callouts happen more often.  You would think ! the smaller font size would mean it's more likely to be put on! the pie slice.  And why is the huge pie piece getting a callout?

Okay, now for the real weirdness.  Change the font size up to, say, 30pt.  Now it puts the bigger labels on the pie.  They won't fit, of course, and they wind up getting put in the wrong place.  There should certainly be callouts.  Part of it is probably also related to it trying to scale them down automatically.


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