601 lines
21 KiB
Julia
601 lines
21 KiB
Julia
# https://github.com/sisl/PGFPlots.jl
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# significant contributions by: @pkofod
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# --------------------------------------------------------------------------------------
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const _pgfplots_linestyles = KW(
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:solid => "solid",
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:dash => "dashed",
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:dot => "dotted",
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:dashdot => "dashdotted",
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:dashdotdot => "dashdotdotted",
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)
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const _pgfplots_markers = KW(
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:none => "none",
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:cross => "+",
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:xcross => "x",
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:+ => "+",
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:x => "x",
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:utriangle => "triangle*",
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:dtriangle => "triangle*",
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:circle => "*",
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:rect => "square*",
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:star5 => "star",
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:star6 => "asterisk",
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:diamond => "diamond*",
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:pentagon => "pentagon*",
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:hline => "-",
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:vline => "|"
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)
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const _pgfplots_legend_pos = KW(
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:bottomleft => "south west",
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:bottomright => "south east",
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:topright => "north east",
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:topleft => "north west",
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:outertopright => "outer north east",
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)
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const _pgf_series_extrastyle = KW(
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:steppre => "const plot mark right",
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:stepmid => "const plot mark mid",
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:steppost => "const plot",
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:sticks => "ycomb",
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:ysticks => "ycomb",
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:xsticks => "xcomb",
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)
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# PGFPlots uses the anchors to define orientations for example to align left
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# one needs to use the right edge as anchor
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const _pgf_annotation_halign = KW(
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:center => "",
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:left => "right",
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:right => "left"
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)
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const _pgf_framestyles = [:box, :axes, :origin, :zerolines, :grid, :none]
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const _pgf_framestyle_defaults = Dict(:semi => :box)
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function pgf_framestyle(style::Symbol)
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if style in _pgf_framestyles
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return style
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else
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default_style = get(_pgf_framestyle_defaults, style, :axes)
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@warn("Framestyle :$style is not (yet) supported by the PGFPlots backend. :$default_style was cosen instead.")
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default_style
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end
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end
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# --------------------------------------------------------------------------------------
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# takes in color,alpha, and returns color and alpha appropriate for pgf style
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function pgf_color(c::Colorant)
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cstr = @sprintf("{rgb,1:red,%.8f;green,%.8f;blue,%.8f}", red(c), green(c), blue(c))
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cstr, alpha(c)
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end
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function pgf_color(grad::ColorGradient)
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# Can't handle ColorGradient here, fallback to defaults.
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cstr = @sprintf("{rgb,1:red,%.8f;green,%.8f;blue,%.8f}", 0.0, 0.60560316,0.97868012)
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cstr, 1
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end
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# Generates a colormap for pgfplots based on a ColorGradient
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function pgf_colormap(grad::ColorGradient)
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join(map(grad.colors) do c
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@sprintf("rgb=(%.8f,%.8f,%.8f)", red(c), green(c),blue(c))
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end,", ")
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end
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pgf_thickness_scaling(plt::Plot) = plt[:thickness_scaling]
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pgf_thickness_scaling(sp::Subplot) = pgf_thickness_scaling(sp.plt)
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pgf_thickness_scaling(series) = pgf_thickness_scaling(series[:subplot])
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function pgf_fillstyle(plotattributes, i = 1)
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cstr,a = pgf_color(get_fillcolor(plotattributes, i))
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fa = get_fillalpha(plotattributes, i)
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if fa !== nothing
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a = fa
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end
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"fill = $cstr, fill opacity=$a"
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end
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function pgf_linestyle(linewidth::Real, color, α = 1, linestyle = "solid")
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cstr, a = pgf_color(plot_color(color, α))
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"""
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color = $cstr,
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draw opacity = $a,
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line width = $linewidth,
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$(get(_pgfplots_linestyles, linestyle, "solid"))"""
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end
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function pgf_linestyle(plotattributes, i = 1)
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lw = pgf_thickness_scaling(plotattributes) * get_linewidth(plotattributes, i)
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lc = get_linecolor(plotattributes, i)
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la = get_linealpha(plotattributes, i)
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ls = get_linestyle(plotattributes, i)
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return pgf_linestyle(lw, lc, la, ls)
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end
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function pgf_font(fontsize, thickness_scaling = 1, font = "\\selectfont")
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fs = fontsize * thickness_scaling
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return string("{\\fontsize{", fs, " pt}{", 1.3fs, " pt}", font, "}")
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end
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function pgf_marker(plotattributes, i = 1)
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shape = _cycle(plotattributes[:markershape], i)
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cstr, a = pgf_color(plot_color(get_markercolor(plotattributes, i), get_markeralpha(plotattributes, i)))
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cstr_stroke, a_stroke = pgf_color(plot_color(get_markerstrokecolor(plotattributes, i), get_markerstrokealpha(plotattributes, i)))
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return string(
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"mark = $(get(_pgfplots_markers, shape, "*")),\n",
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"mark size = $(pgf_thickness_scaling(plotattributes) * 0.5 * _cycle(plotattributes[:markersize], i)),\n",
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plotattributes[:seriestype] == :scatter ? "only marks,\n" : "",
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"mark options = {
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color = $cstr_stroke, draw opacity = $a_stroke,
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fill = $cstr, fill opacity = $a,
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line width = $(pgf_thickness_scaling(plotattributes) * _cycle(plotattributes[:markerstrokewidth], i)),
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rotate = $(shape == :dtriangle ? 180 : 0),
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$(get(_pgfplots_linestyles, _cycle(plotattributes[:markerstrokestyle], i), "solid"))
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}"
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)
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end
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function pgf_add_annotation!(o, x, y, val, thickness_scaling = 1)
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# Construct the style string.
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# Currently supports color and orientation
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cstr,a = pgf_color(val.font.color)
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push!(o, PGFPlots.Plots.Node(val.str, # Annotation Text
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x, y,
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style="""
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$(get(_pgf_annotation_halign,val.font.halign,"")),
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color=$cstr, draw opacity=$(convert(Float16,a)),
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rotate=$(val.font.rotation),
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font=$(pgf_font(val.font.pointsize, thickness_scaling))
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"""))
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end
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# --------------------------------------------------------------------------------------
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function pgf_series(sp::Subplot, series::Series)
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plotattributes = series.plotattributes
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st = plotattributes[:seriestype]
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series_collection = PGFPlots.Plot[]
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# function args
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args = if st == :contour
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plotattributes[:z].surf, plotattributes[:x], plotattributes[:y]
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elseif is3d(st)
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plotattributes[:x], plotattributes[:y], plotattributes[:z]
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elseif st == :straightline
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straightline_data(series)
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elseif st == :shape
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shape_data(series)
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elseif ispolar(sp)
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theta, r = plotattributes[:x], plotattributes[:y]
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rad2deg.(theta), r
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else
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plotattributes[:x], plotattributes[:y]
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end
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# PGFPlots can't handle non-Vector?
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# args = map(a -> if typeof(a) <: AbstractVector && typeof(a) != Vector
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# collect(a)
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# else
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# a
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# end, args)
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if st in (:contour, :histogram2d)
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style = []
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kw = KW()
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push!(style, pgf_linestyle(plotattributes))
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push!(style, pgf_marker(plotattributes))
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push!(style, "forget plot")
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kw[:style] = join(style, ',')
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func = if st == :histogram2d
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PGFPlots.Histogram2
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else
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kw[:labels] = series[:contour_labels]
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kw[:levels] = series[:levels]
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PGFPlots.Contour
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end
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push!(series_collection, func(args...; kw...))
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else
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# series segments
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segments = iter_segments(series)
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for (i, rng) in enumerate(segments)
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style = []
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kw = KW()
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push!(style, pgf_linestyle(plotattributes, i))
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push!(style, pgf_marker(plotattributes, i))
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if st == :shape
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push!(style, pgf_fillstyle(plotattributes, i))
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end
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# add to legend?
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if i == 1 && sp[:legend] != :none && should_add_to_legend(series)
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if plotattributes[:fillrange] !== nothing
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push!(style, "forget plot")
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push!(series_collection, pgf_fill_legend_hack(plotattributes, args))
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else
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kw[:legendentry] = plotattributes[:label]
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if st == :shape # || plotattributes[:fillrange] !== nothing
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push!(style, "area legend")
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end
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end
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else
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push!(style, "forget plot")
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end
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seg_args = (arg[rng] for arg in args)
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# include additional style, then add to the kw
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if haskey(_pgf_series_extrastyle, st)
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push!(style, _pgf_series_extrastyle[st])
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end
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kw[:style] = join(style, ',')
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# add fillrange
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if series[:fillrange] !== nothing && st != :shape
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push!(series_collection, pgf_fillrange_series(series, i, _cycle(series[:fillrange], rng), seg_args...))
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end
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# build/return the series object
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func = if st == :path3d
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PGFPlots.Linear3
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elseif st == :scatter
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PGFPlots.Scatter
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else
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PGFPlots.Linear
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end
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push!(series_collection, func(seg_args...; kw...))
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end
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end
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series_collection
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end
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function pgf_fillrange_series(series, i, fillrange, args...)
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st = series[:seriestype]
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style = []
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kw = KW()
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push!(style, "line width = 0")
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push!(style, "draw opacity = 0")
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push!(style, pgf_fillstyle(series, i))
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push!(style, pgf_marker(series, i))
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push!(style, "forget plot")
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if haskey(_pgf_series_extrastyle, st)
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push!(style, _pgf_series_extrastyle[st])
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end
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kw[:style] = join(style, ',')
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func = is3d(series) ? PGFPlots.Linear3 : PGFPlots.Linear
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return func(pgf_fillrange_args(fillrange, args...)...; kw...)
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end
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function pgf_fillrange_args(fillrange, x, y)
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n = length(x)
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x_fill = [x; x[n:-1:1]; x[1]]
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y_fill = [y; _cycle(fillrange, n:-1:1); y[1]]
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return x_fill, y_fill
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end
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function pgf_fillrange_args(fillrange, x, y, z)
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n = length(x)
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x_fill = [x; x[n:-1:1]; x[1]]
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y_fill = [y; y[n:-1:1]; x[1]]
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z_fill = [z; _cycle(fillrange, n:-1:1); z[1]]
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return x_fill, y_fill, z_fill
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end
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function pgf_fill_legend_hack(plotattributes, args)
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style = []
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kw = KW()
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push!(style, pgf_linestyle(plotattributes, 1))
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push!(style, pgf_marker(plotattributes, 1))
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push!(style, pgf_fillstyle(plotattributes, 1))
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push!(style, "area legend")
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kw[:legendentry] = plotattributes[:label]
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kw[:style] = join(style, ',')
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st = plotattributes[:seriestype]
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func = if st == :path3d
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PGFPlots.Linear3
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elseif st == :scatter
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PGFPlots.Scatter
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else
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PGFPlots.Linear
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end
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return func(([arg[1]] for arg in args)...; kw...)
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end
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# ----------------------------------------------------------------
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function pgf_axis(sp::Subplot, letter)
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axis = sp[Symbol(letter,:axis)]
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style = []
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kw = KW()
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# turn off scaled ticks
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push!(style, "scaled $(letter) ticks = false")
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# set to supported framestyle
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framestyle = pgf_framestyle(sp[:framestyle])
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# axis guide
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kw[Symbol(letter,:label)] = axis[:guide]
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# axis label position
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labelpos = ""
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if letter == :x && axis[:guide_position] == :top
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labelpos = "at={(0.5,1)},above,"
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elseif letter == :y && axis[:guide_position] == :right
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labelpos = "at={(1,0.5)},below,"
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end
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# Add label font
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cstr, α = pgf_color(plot_color(axis[:guidefontcolor]))
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push!(style, string(letter, "label style = {", labelpos ,"font = ", pgf_font(axis[:guidefontsize], pgf_thickness_scaling(sp)), ", color = ", cstr, ", draw opacity = ", α, ", rotate = ", axis[:guidefontrotation], "}"))
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# flip/reverse?
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axis[:flip] && push!(style, "$letter dir=reverse")
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# scale
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scale = axis[:scale]
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if scale in (:log2, :ln, :log10)
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kw[Symbol(letter,:mode)] = "log"
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scale == :ln || push!(style, "log basis $letter=$(scale == :log2 ? 2 : 10)")
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end
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# ticks on or off
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if axis[:ticks] in (nothing, false, :none) || framestyle == :none
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push!(style, "$(letter)majorticks=false")
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end
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# grid on or off
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if axis[:grid] && framestyle != :none
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push!(style, "$(letter)majorgrids = true")
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else
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push!(style, "$(letter)majorgrids = false")
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end
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# limits
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# TODO: support zlims
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if letter != :z
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lims = ispolar(sp) && letter == :x ? rad2deg.(axis_limits(sp, :x)) : axis_limits(sp, letter)
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kw[Symbol(letter,:min)] = lims[1]
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kw[Symbol(letter,:max)] = lims[2]
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end
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if !(axis[:ticks] in (nothing, false, :none, :native)) && framestyle != :none
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ticks = get_ticks(sp, axis)
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#pgf plot ignores ticks with angle below 90 when xmin = 90 so shift values
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tick_values = ispolar(sp) && letter == :x ? [rad2deg.(ticks[1])[3:end]..., 360, 405] : ticks[1]
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push!(style, string(letter, "tick = {", join(tick_values,","), "}"))
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if axis[:showaxis] && axis[:scale] in (:ln, :log2, :log10) && axis[:ticks] == :auto
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# wrap the power part of label with }
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tick_labels = Vector{String}(undef, length(ticks[2]))
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for (i, label) in enumerate(ticks[2])
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base, power = split(label, "^")
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power = string("{", power, "}")
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tick_labels[i] = string(base, "^", power)
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end
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push!(style, string(letter, "ticklabels = {\$", join(tick_labels,"\$,\$"), "\$}"))
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elseif axis[:showaxis]
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tick_labels = ispolar(sp) && letter == :x ? [ticks[2][3:end]..., "0", "45"] : ticks[2]
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if axis[:formatter] in (:scientific, :auto)
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tick_labels = string.("\$", convert_sci_unicode.(tick_labels), "\$")
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tick_labels = replace.(tick_labels, Ref("×" => "\\times"))
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end
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push!(style, string(letter, "ticklabels = {", join(tick_labels,","), "}"))
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else
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push!(style, string(letter, "ticklabels = {}"))
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end
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push!(style, string(letter, "tick align = ", (axis[:tick_direction] == :out ? "outside" : "inside")))
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cstr, α = pgf_color(plot_color(axis[:tickfontcolor]))
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push!(style, string(letter, "ticklabel style = {font = ", pgf_font(axis[:tickfontsize], pgf_thickness_scaling(sp)), ", color = ", cstr, ", draw opacity = ", α, ", rotate = ", axis[:tickfontrotation], "}"))
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push!(style, string(letter, " grid style = {", pgf_linestyle(pgf_thickness_scaling(sp) * axis[:gridlinewidth], axis[:foreground_color_grid], axis[:gridalpha], axis[:gridstyle]), "}"))
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end
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# framestyle
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if framestyle in (:axes, :origin)
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axispos = framestyle == :axes ? "left" : "middle"
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if axis[:draw_arrow]
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push!(style, string("axis ", letter, " line = ", axispos))
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else
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# the * after line disables the arrow at the axis
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push!(style, string("axis ", letter, " line* = ", axispos))
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end
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end
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if framestyle == :zerolines
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push!(style, string("extra ", letter, " ticks = 0"))
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push!(style, string("extra ", letter, " tick labels = "))
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push!(style, string("extra ", letter, " tick style = {grid = major, major grid style = {", pgf_linestyle(pgf_thickness_scaling(sp), axis[:foreground_color_border], 1.0), "}}"))
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end
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if !axis[:showaxis]
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push!(style, "separate axis lines")
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end
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if !axis[:showaxis] || framestyle in (:zerolines, :grid, :none)
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push!(style, string(letter, " axis line style = {draw opacity = 0}"))
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else
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push!(style, string(letter, " axis line style = {", pgf_linestyle(pgf_thickness_scaling(sp), axis[:foreground_color_border], 1.0), "}"))
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end
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# return the style list and KW args
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style, kw
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end
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# ----------------------------------------------------------------
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function _update_plot_object(plt::Plot{PGFPlotsBackend})
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plt.o = PGFPlots.Axis[]
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# Obtain the total height of the plot by extracting the maximal bottom
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# coordinate from the bounding box.
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total_height = bottom(bbox(plt.layout))
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for sp in plt.subplots
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# first build the PGFPlots.Axis object
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style = ["unbounded coords=jump"]
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kw = KW()
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# add to style/kw for each axis
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for letter in (:x, :y, :z)
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if letter != :z || is3d(sp)
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axisstyle, axiskw = pgf_axis(sp, letter)
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append!(style, axisstyle)
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merge!(kw, axiskw)
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end
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end
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# bounding box values are in mm
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# note: bb origin is top-left, pgf is bottom-left
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# A round on 2 decimal places should be enough precision for 300 dpi
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# plots.
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bb = bbox(sp)
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push!(style, """
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xshift = $(left(bb).value)mm,
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yshift = $(round((total_height - (bottom(bb))).value, digits=2))mm,
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axis background/.style={fill=$(pgf_color(sp[:background_color_inside])[1])}
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""")
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kw[:width] = "$(width(bb).value)mm"
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kw[:height] = "$(height(bb).value)mm"
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if sp[:title] != ""
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kw[:title] = "$(sp[:title])"
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cstr, α = pgf_color(plot_color(sp[:titlefontcolor]))
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push!(style, string("title style = {font = ", pgf_font(sp[:titlefontsize], pgf_thickness_scaling(sp)), ", color = ", cstr, ", draw opacity = ", α, ", rotate = ", sp[:titlefontrotation], "}"))
|
||
end
|
||
|
||
if get_aspect_ratio(sp) in (1, :equal)
|
||
kw[:axisEqual] = "true"
|
||
end
|
||
|
||
legpos = sp[:legend]
|
||
if haskey(_pgfplots_legend_pos, legpos)
|
||
kw[:legendPos] = _pgfplots_legend_pos[legpos]
|
||
end
|
||
cstr, bg_alpha = pgf_color(plot_color(sp[:background_color_legend]))
|
||
fg_alpha = alpha(plot_color(sp[:foreground_color_legend]))
|
||
|
||
push!(style, string(
|
||
"legend style = {",
|
||
pgf_linestyle(pgf_thickness_scaling(sp), sp[:foreground_color_legend], fg_alpha, "solid", ), ",",
|
||
"fill = $cstr,",
|
||
"fill opacity = $bg_alpha,",
|
||
"text opacity = $(alpha(plot_color(sp[:legendfontcolor]))),",
|
||
"font = ", pgf_font(sp[:legendfontsize], pgf_thickness_scaling(sp)),
|
||
"}",
|
||
))
|
||
|
||
if any(s[:seriestype] == :contour for s in series_list(sp))
|
||
kw[:view] = "{0}{90}"
|
||
kw[:colorbar] = !(sp[:colorbar] in (:none, :off, :hide, false))
|
||
elseif is3d(sp)
|
||
azim, elev = sp[:camera]
|
||
kw[:view] = "{$(azim)}{$(elev)}"
|
||
end
|
||
|
||
axisf = PGFPlots.Axis
|
||
if sp[:projection] == :polar
|
||
axisf = PGFPlots.PolarAxis
|
||
#make radial axis vertical
|
||
kw[:xmin] = 90
|
||
kw[:xmax] = 450
|
||
end
|
||
|
||
# Search series for any gradient. In case one series uses a gradient set
|
||
# the colorbar and colomap.
|
||
# The reasoning behind doing this on the axis level is that pgfplots
|
||
# colorbar seems to only works on axis level and needs the proper colormap for
|
||
# correctly displaying it.
|
||
# It's also possible to assign the colormap to the series itself but
|
||
# then the colormap needs to be added twice, once for the axis and once for the
|
||
# series.
|
||
# As it is likely that all series within the same axis use the same
|
||
# colormap this should not cause any problem.
|
||
for series in series_list(sp)
|
||
for col in (:markercolor, :fillcolor, :linecolor)
|
||
if typeof(series.plotattributes[col]) == ColorGradient
|
||
push!(style,"colormap={plots}{$(pgf_colormap(series.plotattributes[col]))}")
|
||
|
||
if sp[:colorbar] == :none
|
||
kw[:colorbar] = "false"
|
||
else
|
||
kw[:colorbar] = "true"
|
||
end
|
||
# goto is needed to break out of col and series for
|
||
@goto colorbar_end
|
||
end
|
||
end
|
||
end
|
||
@label colorbar_end
|
||
|
||
push!(style, "colorbar style={title=$(sp[:colorbar_title])}")
|
||
o = axisf(; style = join(style, ","), kw...)
|
||
|
||
# add the series object to the PGFPlots.Axis
|
||
for series in series_list(sp)
|
||
push!.(Ref(o), pgf_series(sp, series))
|
||
|
||
# add series annotations
|
||
anns = series[:series_annotations]
|
||
for (xi,yi,str,fnt) in EachAnn(anns, series[:x], series[:y])
|
||
pgf_add_annotation!(o, xi, yi, PlotText(str, fnt), pgf_thickness_scaling(series))
|
||
end
|
||
end
|
||
|
||
# add the annotations
|
||
for ann in sp[:annotations]
|
||
pgf_add_annotation!(o, locate_annotation(sp, ann...)..., pgf_thickness_scaling(sp))
|
||
end
|
||
|
||
|
||
# add the PGFPlots.Axis to the list
|
||
push!(plt.o, o)
|
||
end
|
||
end
|
||
|
||
function _show(io::IO, mime::MIME"image/svg+xml", plt::Plot{PGFPlotsBackend})
|
||
show(io, mime, plt.o)
|
||
end
|
||
|
||
function _show(io::IO, mime::MIME"application/pdf", plt::Plot{PGFPlotsBackend})
|
||
# prepare the object
|
||
pgfplt = PGFPlots.plot(plt.o)
|
||
|
||
# save a pdf
|
||
fn = tempname()*".pdf"
|
||
PGFPlots.save(PGFPlots.PDF(fn), pgfplt)
|
||
|
||
# read it into io
|
||
write(io, read(open(fn), String))
|
||
|
||
# cleanup
|
||
PGFPlots.cleanup(plt.o)
|
||
end
|
||
|
||
function _show(io::IO, mime::MIME"application/x-tex", plt::Plot{PGFPlotsBackend})
|
||
fn = tempname()*".tex"
|
||
PGFPlots.save(fn, backend_object(plt), include_preamble=plt.attr[:tex_output_standalone])
|
||
write(io, read(open(fn), String))
|
||
end
|
||
|
||
function _display(plt::Plot{PGFPlotsBackend})
|
||
# prepare the object
|
||
pgfplt = PGFPlots.plot(plt.o)
|
||
|
||
# save an svg
|
||
fn = string(tempname(), ".svg")
|
||
PGFPlots.save(PGFPlots.SVG(fn), pgfplt)
|
||
|
||
# show it
|
||
open_browser_window(fn)
|
||
|
||
# cleanup
|
||
PGFPlots.cleanup(plt.o)
|
||
end
|