[Haskell-cafe] graphical editor links ?

[Luc TAESCH]

I am designing some graphical editor ( visio - dia like) and would be interested to hear any pointer to help me think on the architecture of this, in term of data structure/ EDSL/ persistence/ paradigm (FP/ FRP/...)

for the different "layers of abstraction " I may see , like 
rendering libraries ( gtk/wx..)<-> model of the diagram<-> semantics ( this is a state diag/ archimate / mind mapping , i.e. what the glyph and lines means ) <-> persistence

Any help & pointers welcomed ! 
( and which place is best to discuss this ?)
Luc


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