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Deal with overlapping legends in pie charts

#344

In the spirit of #122 Improve graph readability, there's one specific aspect of charts that could be improved: overlapping legends in pie charts. With small enough slices, the legends overlap. If there's only two overlapping legends, moneyGuru manages to deal with it, but more than that and we're lost.

Previously dealing with it was complicated because it happened in the GUI layer and that the pie chart drawing code in Objective C was already complex enough, but now that drawing happens in the core, it should be simple enough to do it.

What I'm thinking about is a 2-cases scenario:

  1. No legend overlap. Keep things as they were.
  2. Any legend overlapping? Go in "Crowded mode".

When in Crowded mode, all legends are pushed to the left and right side (depending on which side they were on previously) and then simply distributed evenly on the Y axis.

Reported by Virgil Dupras · September 25th, 2012 @ 10:25 PM

State: fixed
Milestone: none
Assigned to: Virgil Dupras Virgil Dupras

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