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May 1, 2023 14:26
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Ruby script to convert animated GIF into an Android AnimationDrawable
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#!/usr/bin/ruby | |
require 'fileutils' | |
require 'RMagick' | |
require 'slop' | |
require 'builder' | |
opts = Slop.new do | |
banner "gif2animdraw [options]\n" | |
on :i, :input=, 'path to animated GIF (or directory of GIFs)', :required => true | |
on :o, :outdir=, 'path to root output directory', :required => true | |
on :d, :density=, 'density name to use for frames', :required=>true | |
on :oneshot, 'if set, animation does not repeat', :required => false, :default=>false | |
help | |
end | |
begin | |
opts.parse | |
rescue | |
puts opts.help | |
exit -1 | |
end | |
if !['ldpi', 'mdpi', 'tvdpi', 'hdpi', 'xhdpi', 'xxhdpi', 'xxxhdpi'].include?(opts[:d]) | |
puts "Invalid density #{opts[:d]}" | |
exit -1 | |
end | |
glob=File.directory?(opts[:i]) ? File.join(opts[:i], '*.gif') : opts[:i] | |
Dir[glob].each do |gif| | |
input=Magick::ImageList.new(gif).coalesce | |
output=File.join(opts[:o], 'drawable') | |
output_density=File.join(opts[:o], 'drawable-'+opts[:d]) | |
basename=File.basename(gif, '.gif').downcase.gsub(/\W/,'_') | |
FileUtils.mkdir_p output | |
FileUtils.mkdir_p output_density | |
Dir.glob(File.join(output_density, basename+'*.png')).each {|f| File.delete(f) } | |
input.write File.join(output_density, basename+'_%d.png') | |
builder = Builder::XmlMarkup.new(:indent=>2) | |
builder.tag!('animation-list', | |
'xmlns:android'=>'http://schemas.android.com/apk/res/android', | |
'android:oneshot'=>opts[:oneshot]) do | |
i=0 | |
input.each do |frame| | |
builder.item('android:drawable'=>"@drawable/#{basename}_#{i}", | |
'android:duration'=>frame.delay*1000/input.ticks_per_second) | |
i+=1 | |
end | |
end | |
open(File.join(output, basename+'.xml'), 'w') do |f| | |
f.puts builder.target! | |
end | |
end |
If anyone else is still looking at this (no judgements), make sure you install slop 3, not the rewritten slop 4 which was rewritten and has broken changes.
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@frankkienl: I updated the script so
-i
accepts a directory or an individual GIF.And, since comments here do not trigger GitHub notifications (grrrrr...), please use StackOverflow for further questions about this script. Tag your question with
commonsware
(in addition toandroid
orruby
, whichever is more applicable to your question).