fix pgfplots saving with FileIO

src/examples.jl

@@ -443,6 +443,7 @@ _backend_skips = Dict(
     :gr => [25, 30],
     :pyplot => [25, 30],
     :plotlyjs => [2, 21, 25, 30, 31],
+    :pgfplots => [2, 25, 30],
 )
 
 # ---------------------------------------------------------------------------------

src/init.jl

@@ -80,4 +80,28 @@ function __init__()
             ENV["MPLBACKEND"] = "Agg"
         end
     end
+
+
+
+    # ---------------------------------------------------------
+    # A backup, if no PNG generation is defined, is to try to make a PDF and use FileIO to convert
+    @require FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549" begin
+        PDFBackends = Union{PGFPlotsBackend,PlotlyJSBackend,PyPlotBackend,InspectDRBackend,GRBackend}
+        function _show(io::IO, ::MIME"image/png", plt::Plot{<:PDFBackends})
+            fn = tempname()
+
+            # first save a pdf file
+            pdf(plt, fn)
+
+            # load that pdf into a FileIO Stream
+            s = FileIO.load(fn * ".pdf")
+
+            # save a png
+            pngfn = fn * ".png"
+            FileIO.save(pngfn, s)
+
+            # now write from the file
+            write(io, read(open(pngfn), String))
+        end
+    end
 end

src/output.jl

@@ -210,30 +210,6 @@ _show(io::IO, ::MIME{Symbol("text/plain")}, plt::Plot) = show(io, plt)
 closeall() = closeall(backend())
 
 
-# ---------------------------------------------------------
-# A backup, if no PNG generation is defined, is to try to make a PDF and use FileIO to convert
-
-const PDFBackends = Union{PGFPlotsBackend,PlotlyJSBackend,PyPlotBackend,InspectDRBackend,GRBackend}
-if is_installed("FileIO")
-    @eval import FileIO
-    function _show(io::IO, ::MIME"image/png", plt::Plot{<:PDFBackends})
-        fn = tempname()
-
-        # first save a pdf file
-        pdf(plt, fn)
-
-        # load that pdf into a FileIO Stream
-        s = FileIO.load(fn * ".pdf")
-
-        # save a png
-        pngfn = fn * ".png"
-        FileIO.save(pngfn, s)
-
-        # now write from the file
-        write(io, read(open(pngfn), String))
-    end
-end
-
 # function html_output_format(fmt)
 #     if fmt == "png"
 #         @eval function Base.show(io::IO, ::MIME"text/html", plt::Plot)

test/imgcomp.jl

@@ -29,11 +29,7 @@ default(size=(500,300))
 # TODO: use julia's Condition type and the wait() and notify() functions to initialize a Window, then wait() on a condition that
 #       is referenced in a button press callback (the button clicked callback will call notify() on that condition)
 
-<<<<<<< HEAD
-const _current_plots_version = v"0.20.3"
-=======
 import Plots._current_plots_version
->>>>>>> move _current_plots_version from PlotDocs to Plots
 
 
 function image_comparison_tests(pkg::Symbol, idx::Int; debug = false, popup = isinteractive(), sigma = [1,1], tol = 1e-2)