Save Plot as png

[t-bltg]

Allow saving plot as png file using FreeTypeAbstraction.

Needs #238 (true colors, RGB).
Needs JuliaGraphics/FreeTypeAbstraction.jl#69.

transparent

non-transparent

[johnnychen94]

This looks awesome! I assume this will eventually make the new DemoCards-based gallery work for UnicodePlots?

[t-bltg]

I assume this will eventually make the new DemoCards-based gallery work for UnicodePlots?

Haha, yes you found the hidden goal of this PR 🥇

[codecov-commenter]

Codecov Report

Merging #239 (e86be32) into master (ee91545) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head e86be32 differs from pull request most recent head 095bf2e. Consider uploading reports for the commit 095bf2e to get more accurate results

@@           Coverage Diff           @@
##           master     #239   +/-   ##
=======================================
  Coverage   99.93%   99.93%           
=======================================
  Files          28       28           
  Lines        1572     1638   +66     
=======================================
+ Hits         1571     1637   +66     
  Misses          1        1           

Impacted Files	Coverage Δ
src/canvas.jl	100.00% <100.00%> (ø)
src/canvas/braillecanvas.jl	98.11% <100.00%> (ø)
src/canvas/densitycanvas.jl	100.00% <100.00%> (ø)
src/canvas/heatmapcanvas.jl	100.00% <100.00%> (ø)
src/canvas/lookupcanvas.jl	100.00% <100.00%> (ø)
src/common.jl	100.00% <100.00%> (ø)
src/graphics.jl	100.00% <100.00%> (ø)
src/graphics/bargraphics.jl	100.00% <100.00%> (ø)
src/graphics/boxgraphics.jl	100.00% <100.00%> (ø)
src/plot.jl	100.00% <100.00%> (ø)
... and 1 more

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[t-bltg]

I'm sure there will be some polishing fixes needed, but I can save a layout in png from Plots.jl so I will test it now to build Plots docs.