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Allow selecting pre-written BarGlyph’s by a symbol name, add two Gray code sequences #246

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Allow selecting pre-written BarGlyph’s by a symbol name, add two Gray code sequences #246

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1b2f477
Allow selecting pre-written BarGlyph’s by a symbol name
ikirill Aug 5, 2022
cf135b3
Add braille and block de Bruijn sequences
ikirill Nov 22, 2025
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30 changes: 30 additions & 0 deletions src/ProgressMeter.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,36 @@ function BarGlyphs(s::AbstractString)
end
const defaultglyphs = BarGlyphs('|','█', Sys.iswindows() ? '█' : ['▏','▎','▍','▌','▋','▊','▉'],' ','|',)

""" BarGlyphs(which::Symbol)

- `:braille`, a gray code on Braille characters, approximately sorted by weight
- `:blocks`, a gray code on unicode quarter-blocks

Demonstration:
```
n=1000; progress = Progress(n, barglyphs=BarGlyphs(:blocks), showspeed=true, barlen=20, dt=0)
for i=1:n; sleep(1/60); next!(progress, ignore_predictor=true); end
```
"""
function BarGlyphs(which::Symbol)
if which == :braille
# Braille gray code in order of approximately (±1) increasing
# weight. See Knuth volume 4A. The second-last character used
# to be ⣿, but it is deleted to make the sequence loop: it’s
# not a valid Gray code.
BarGlyphs('│', '⣿', collect(" ⠁⠃⠂⠆⠄⠌⠈⠘⠐⠰⠠⡠⡀⣀⢀⢐⢘⢈⢨⢠⢢⢂⢃⢁⢅⢄⣄⡄⡆⡂⡃⡁⡑⡐⡘⡈⡨⠨⠬⠤⠦⠢⠣⠡⠱⠑⠕⠔⠖⠒⠚⠊⠋⠉⠍⠅⠇⠏⠎⠞⠜⠝⠙⠛⠓⠳⠲⠶⠴⠵⠥⠭⠩⠫⠪⠺⠸⡸⡰⡱⡡⡩⡉⡋⡊⡚⡒⡲⡢⡦⡤⡬⡌⡜⡔⡕⡅⣅⣁⣃⣂⣆⢆⢦⢤⢥⢡⣡⣠⣨⣈⣌⢌⢍⢉⢋⢊⢚⢒⢲⢰⣰⣐⣔⢔⢕⢑⣑⣱⢱⢳⢓⢛⢙⢝⢜⢼⢴⢶⢖⣖⣒⣚⣘⣸⢸⢺⢪⢮⢎⣎⣊⣋⣉⣩⢩⢭⢬⣬⣤⣦⣢⣣⢣⢧⢇⣇⡇⡏⡍⡭⡥⡵⡴⡶⡖⡞⡎⡮⡪⡫⡣⡳⡓⡛⡙⡹⠹⠽⠼⠾⠮⠯⠧⠷⠗⠟⠿⠻⡻⡺⡾⡼⡽⡝⡟⡗⡷⡧⣧⣥⣭⣍⣏⢏⢯⢫⣫⣪⣺⣲⣶⣴⣼⣜⣞⢞⢟⢗⢷⢵⢽⢹⣹⣙⣛⣓⣗⣕⣝⣽⣵⣷⣳⣻⢻⢿⢾⣾⣮⣯⡯⡿⣟"), ' ', '│')
elseif which == :braille_debruijn
BarGlyphs('│', '⣿', collect("⠀⢀⠠⠐⠈⠁⠂⠄⣀⢠⠰⠘⠉⠃⠆⣄⡠⢐⠨⠑⠊⠅⡂⢄⣠⢰⠸⠙⠋⠇⣆⡤⡐⢈⠡⠒⠌⡁⢂⠤⣐⢨⠱⠚⠍⡃⢆⣤⡰⢘⠩⠓⠎⡅⣂⢤⣰⢸⠹⠛⠏⣇⡦⡔⡈⢁⠢⠔⣈⢡⠲⠜⡉⢃⠦⣔⡨⢑⠪⠕⡊⢅⡢⢔⣨⢱⠺⠝⡋⢇⣦⡴⡘⢉⠣⠖⡌⣁⢢⠴⣘⢩⠳⠞⡍⣃⢦⣴⡸⢙⠫⠗⡎⣅⣢⢴⣸⢹⠻⠟⣏⡧⡖⣌⡡⢒⠬⡑⢊⠥⡒⢌⣡⢲⠼⡙⢋⠧⣖⡬⣑⢪⠵⡚⢍⡣⢖⣬⡱⢚⠭⡓⢎⡥⣒⢬⣱⢺⠽⡛⢏⣧⡶⡜⣉⢣⠶⣜⡩⢓⠮⡕
⢥⡲⢜⣩⢳⠾⡝⣋⢧⣶⡼⣙⢫⠷⡞⣍⣣⢶⣼⡹⢛⠯⡗⣎⣥⣲⢼⣹⢻⠿⣟⡯⣗⡮⣕⡪⢕⣪⢵⡺⢝⡫⢗⣮⡵⣚⢭⡳⢞⡭⣓⢮⣵⣺⢽⡻⢟⣯⡷⣞⣭⣳⢾⡽⣛⢯⣷⡾⣝⣫⢷⣾⣽⣻⢿"), ' ', '│')
elseif which == :blocks
BarGlyphs('│', '█', collect(" ▗▐▝▞▖▌▘▀▜▚▙▄▟▛"), ' ', '│')
elseif which == :blocks_debruijn
BarGlyphs('│', '█', collect(" ▗▝▘▄▐▀▙▞▚▟▜"), ' ', '│')
else
error("Unrecognized default BarGlyphs name: $which")
end
end

# Internal struct for holding common properties and internals for progress meters
Base.@kwdef mutable struct ProgressCore
color::Symbol = :green # color of the meter
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16 changes: 16 additions & 0 deletions test/test.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -306,6 +306,22 @@ println("Testing custom bar glyphs")
testfunc14("[=> ]")
@test_throws ErrorException testfunc14("gklelt")

function testfunc14a(barglyphs::Symbol)
n = 30
p = Progress(n, barglyphs=BarGlyphs(barglyphs))
for i in 1:n
sleep(0.05)
next!(p)
end
finish!(p)
end

testfunc14a(:blocks)
testfunc14a(:braille)
testfunc14a(:blocks_debruijn)
testfunc14a(:braille_debruijn)
@test_throws ErrorException testfunc14a(:xxyyzz)

# Threshold-based progress reports
println("Testing threshold-based progress")
prog = ProgressThresh(1e-5; desc="Minimizing:")
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