67 lines
1.9 KiB
Julia
67 lines
1.9 KiB
Julia
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# NOTE: backend should implement `html_body` and `html_head`
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# CREDIT: parts of this implementation were inspired by @joshday's PlotlyLocal.jl
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function standalone_html(plt::AbstractPlot; title::AbstractString = get(plt.attr, :window_title, "Plots.jl"))
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"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>$title</title>
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$(html_head(plt))
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</head>
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<body>
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$(html_body(plt))
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</body>
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</html>
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"""
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end
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function open_browser_window(filename::AbstractString)
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@static if is_apple()
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return run(`open $(filename)`)
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end
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@static if is_linux() || is_bsd() # is_bsd() addition is as yet untested, but based on suggestion in https://github.com/JuliaPlots/Plots.jl/issues/681
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return run(`xdg-open $(filename)`)
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end
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@static if is_windows()
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return run(`$(ENV["COMSPEC"]) /c start "" "$(filename)"`)
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end
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warn("Unknown OS... cannot open browser window.")
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end
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function write_temp_html(plt::AbstractPlot)
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html = standalone_html(plt; title = plt.attr[:window_title])
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filename = string(tempname(), ".html")
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output = open(filename, "w")
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write(output, html)
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close(output)
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filename
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end
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function standalone_html_window(plt::AbstractPlot)
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filename = write_temp_html(plt)
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open_browser_window(filename)
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end
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# uses wkhtmltopdf/wkhtmltoimage: http://wkhtmltopdf.org/downloads.html
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function html_to_png(html_fn, png_fn, w, h)
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run(`wkhtmltoimage -f png -q --width $w --height $h --disable-smart-width $html_fn $png_fn`)
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end
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function show_png_from_html(io::IO, plt::AbstractPlot)
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# write html to a temporary file
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html_fn = write_temp_html(plt)
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# convert that html file to a temporary png file using wkhtmltoimage
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png_fn = tempname() * ".png"
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w, h = plt.attr[:size]
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html_to_png(html_fn, png_fn, w, h)
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# now read that file data into io
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pngdata = readall(png_fn)
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write(io, pngdata)
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end
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