Display output in Juno Plot pane

[cormullion]

By loading this code:

using Juno, Hiccup

Media.media(Drawing, Media.Plot)

function Media.render(pane::Juno.PlotPane, img::Drawing)
    Media.render(pane, Hiccup.div(Hiccup.img(src=img.filename)))
end

it's sort of possible to display output in a Juno Plot pane:

However, this doesn't update when the file changes, so it's not yet working satisfactorily.

[cormullion]

The code can be improved (JunoLab/Juno.jl#58) by adding a browser-fooling URL:

using Luxor
using Juno, Hiccup
Juno.media(MyType, Media.Plot)
Juno.media(MyType, Media.Graphical)

function Juno.render(pane::Juno.PlotPane, img::Drawing)
    Juno.render(pane, Hiccup.div(Hiccup.img(src=img.filename*"?$(time())")))
end

cd("/tmp")
Drawing("A6", "/tmp/t17.png")
background("grey20")
origin()
randomhue()
R = rand(30:63)
epitrochoid(R, rand(12:41), rand(5:137), :stroke)
fontsize(70)
sethue("white")
text(string(R))
finish()
display(currentdrawing)

This might be added to the Luxor package one day, perhaps when there are conditional dependencies (i.e. "load this code only if Juno is available".

[pfitzseb]

Okay, so our design idea here was that you'll only need to depend on Juno, which is super small and lightweight (because it and all it's dependecies are pure Julia) and can then call Juno.isactive() as a guard around your render definitions.
This approach shouldn't add much overhead, but still work around the conditional requirements issue. Still, it's of course up to you if you want to support native Juno plotting right now :)

[cormullion]

Oh, it's easier than I thought... ! I'll have a crack at it today or tomorrow!

[pfitzseb]

Great :)
Btw, you don't even need to save the svg to a file -- dumping the svg contents into the plot pane directly works too.

[cormullion]

Added code to support Juno in this commit, see how it works...