Add support for CairoMakie

Project.toml

@@ -21,6 +21,7 @@ julia = "1.6"
 
 [extras]
 Cairo = "159f3aea-2a34-519c-b102-8c37f9878175"
+CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
 Fontconfig = "186bb1d3-e1f7-5a2c-a377-96d770f13627"
 Gadfly = "c91e804a-d5a3-530f-b6f0-dfbca275c004"
 ImageMagick = "6218d12a-5da1-5696-b52f-db25d2ecc6d1"

src/Optional/CairoMakie.jl

@@ -0,0 +1,15 @@
+import .CairoMakie: Figure
+
+function Base.convert(t::Type{PngImage}, plot::CairoMakie.Figure)
+    pb = PipeBuffer()
+    show(pb, MIME("image/png"), plot)
+    return PngImage(pb)
+end
+
+preprocess(name, plot::CairoMakie.Figure, data) = preprocess(name, convert(PngImage, plot), data)
+preprocess(name, plots::AbstractArray{<:CairoMakie.Figure}, data) = begin
+    for (i, plot)=enumerate(plots)
+        preprocess(name*"/$i", plot, data)
+    end
+    return data
+end

src/TensorBoardLogger.jl

@@ -100,6 +100,9 @@ function __init__()
     @require Plots="91a5bcdd-55d7-5caf-9e0b-520d859cae80" begin
         include("Optional/Plots.jl")
     end
+    @require CairoMakie="13f3f980-e62b-5c42-98c6-ff1f3baf88f0" begin
+      include("Optional/CairoMakie.jl")
+    end
     @require PyPlot="d330b81b-6aea-500a-939a-2ce795aea3ee" begin
         include("Optional/PyPlot.jl")
     end