gem.sh

Metadata

Name: chunky_png
Version: 1.4.0
Platform: ruby
Authors: Willem van Bergen
Bindir: bin
Date: 2020-12-28 00:00:00 UTC
Dependencies: rake (>= 0, development)
standard (>= 0, development)
yard (~> 0.9, development)
rspec (~> 3, development)
Description: This pure Ruby library can read and write PNG images without depending on an external image library, like RMagick. It tries to be memory efficient and reasonably fast. It supports reading and writing all PNG variants that are defined in the specification, with one limitation: only 8-bit color depth is supported. It supports all transparency, interlacing and filtering options the PNG specifications allows. It can also read and write textual metadata from PNG files. Low-level read/write access to PNG chunks is also possible. This library supports simple drawing on the image canvas and simple operations like alpha composition and cropping. Finally, it can import from and export to RMagick for interoperability. Also, have a look at OilyPNG at https://github.com/wvanbergen/oily_png. OilyPNG is a drop in mixin module that implements some of the ChunkyPNG algorithms in C, which provides a massive speed boost to encoding and decoding.
Email: willem@railsdoctors.com
Extra rdoc files: README.md
BENCHMARKING.rdoc
CONTRIBUTING.rdoc
CHANGELOG.rdoc
Files: .github/workflows/ruby.yml
.gitignore
.standard.yml
.yardopts
BENCHMARKING.rdoc
CHANGELOG.rdoc
CONTRIBUTING.rdoc
Gemfile
LICENSE
README.md
Rakefile
benchmarks/decoding_benchmark.rb
benchmarks/encoding_benchmark.rb
benchmarks/filesize_benchmark.rb
bin/rake
bin/standardrb
chunky_png.gemspec
docs/.gitignore
docs/CNAME
docs/_config.yml
docs/_posts/2010-01-14-memory-efficiency-when-using-ruby.md
docs/_posts/2010-01-17-ode-to-array-pack-and-string-unpack.md
docs/_posts/2014-11-07-the-value-of-a-pure-ruby-library.md
docs/index.md
lib/chunky_png.rb
lib/chunky_png/canvas.rb
lib/chunky_png/canvas/adam7_interlacing.rb
lib/chunky_png/canvas/data_url_exporting.rb
lib/chunky_png/canvas/data_url_importing.rb
lib/chunky_png/canvas/drawing.rb
lib/chunky_png/canvas/masking.rb
lib/chunky_png/canvas/operations.rb
lib/chunky_png/canvas/png_decoding.rb
lib/chunky_png/canvas/png_encoding.rb
lib/chunky_png/canvas/resampling.rb
lib/chunky_png/canvas/stream_exporting.rb
lib/chunky_png/canvas/stream_importing.rb
lib/chunky_png/chunk.rb
lib/chunky_png/color.rb
lib/chunky_png/datastream.rb
lib/chunky_png/dimension.rb
lib/chunky_png/image.rb
lib/chunky_png/palette.rb
lib/chunky_png/point.rb
lib/chunky_png/rmagick.rb
lib/chunky_png/vector.rb
lib/chunky_png/version.rb
spec/chunky_png/canvas/adam7_interlacing_spec.rb
spec/chunky_png/canvas/data_url_exporting_spec.rb
spec/chunky_png/canvas/data_url_importing_spec.rb
spec/chunky_png/canvas/drawing_spec.rb
spec/chunky_png/canvas/masking_spec.rb
spec/chunky_png/canvas/operations_spec.rb
spec/chunky_png/canvas/png_decoding_spec.rb
spec/chunky_png/canvas/png_encoding_spec.rb
spec/chunky_png/canvas/resampling_spec.rb
spec/chunky_png/canvas/stream_exporting_spec.rb
spec/chunky_png/canvas/stream_importing_spec.rb
spec/chunky_png/canvas_spec.rb
spec/chunky_png/color_spec.rb
spec/chunky_png/datastream_spec.rb
spec/chunky_png/dimension_spec.rb
spec/chunky_png/image_spec.rb
spec/chunky_png/point_spec.rb
spec/chunky_png/rmagick_spec.rb
spec/chunky_png/vector_spec.rb
spec/chunky_png_spec.rb
spec/png_suite/background_chunks/bgai4a08.png
spec/png_suite/background_chunks/bgai4a16.png
spec/png_suite/background_chunks/bgan6a08.png
spec/png_suite/background_chunks/bgan6a16.png
spec/png_suite/background_chunks/bgbn4a08.png
spec/png_suite/background_chunks/bggn4a16.png
spec/png_suite/background_chunks/bgwn6a08.png
spec/png_suite/background_chunks/bgyn6a16.png
spec/png_suite/basic/basi0g01.png
spec/png_suite/basic/basi0g01.rgba
spec/png_suite/basic/basi0g02.png
spec/png_suite/basic/basi0g02.rgba
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spec/png_suite/basic/basi0g04.rgba
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spec/png_suite/basic/basi0g08.rgba
spec/png_suite/basic/basi0g16.png
spec/png_suite/basic/basi0g16.rgba
spec/png_suite/basic/basi2c08.png
spec/png_suite/basic/basi2c08.rgba
spec/png_suite/basic/basi2c16.png
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spec/png_suite/basic/basi3p01.rgba
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spec/png_suite/basic/basi3p08.rgba
spec/png_suite/basic/basi4a08.png
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spec/png_suite/basic/basi4a16.png
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spec/png_suite/basic/basi6a08.png
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spec/png_suite/basic/basn0g01.png
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spec/png_suite/broken/x00n0g01.png
spec/png_suite/broken/xcrn0g04.png
spec/png_suite/broken/xlfn0g04.png
spec/png_suite/chunk_ordering/oi1n0g16.png
spec/png_suite/chunk_ordering/oi1n2c16.png
spec/png_suite/chunk_ordering/oi2n0g16.png
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spec/png_suite/other/pp0n2c16.png
spec/png_suite/other/pp0n6a08.png
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spec/png_suite/other/ps1n2c16.png
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spec/png_suite/transparency/tbbn1g04.png
spec/png_suite/transparency/tbbn2c16.png
spec/png_suite/transparency/tbbn3p08.png
spec/png_suite/transparency/tbgn2c16.png
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spec/png_suite/transparency/tbyn3p08.png
spec/png_suite/transparency/tp0n1g08.png
spec/png_suite/transparency/tp0n2c08.png
spec/png_suite/transparency/tp0n3p08.png
spec/png_suite/transparency/tp1n3p08.png
spec/png_suite_spec.rb
spec/resources/adam7.png
spec/resources/bezier_five_point.png
spec/resources/bezier_four_point.png
spec/resources/bezier_four_point_flipped.png
spec/resources/bezier_four_point_s.png
spec/resources/bezier_six_point.png
spec/resources/bezier_three_point.png
spec/resources/bezier_three_point_flipped.png
spec/resources/circles.png
spec/resources/clock.png
spec/resources/clock_base.png
spec/resources/clock_bl_xdown_ydown.png
spec/resources/clock_bl_xdown_yup.png
spec/resources/clock_bl_xup_yup.png
spec/resources/clock_mask.png
spec/resources/clock_mask_updated.png
spec/resources/clock_nn_xdown_ydown.png
spec/resources/clock_nn_xdown_yup.png
spec/resources/clock_nn_xup_yup.png
spec/resources/clock_updated.png
spec/resources/composited.png
spec/resources/cropped.png
spec/resources/cropped_height.png
spec/resources/damaged_chunk.png
spec/resources/damaged_signature.png
spec/resources/empty.png
spec/resources/itxt_chunk.png
spec/resources/lines.png
spec/resources/operations.png
spec/resources/operations_border.png
spec/resources/operations_grayscale.png
spec/resources/partial_circles.png
spec/resources/pixelstream.bgr
spec/resources/pixelstream.rgb
spec/resources/pixelstream.rgba
spec/resources/pixelstream_best_compression.png
spec/resources/pixelstream_fast_rgba.png
spec/resources/pixelstream_reference.png
spec/resources/polygon_filled_horizontal.png
spec/resources/polygon_filled_vertical.png
spec/resources/polygon_triangle_filled.png
spec/resources/polygon_unfilled.png
spec/resources/rect.png
spec/resources/replaced.png
spec/resources/text_chunk.png
spec/resources/trailing_bytes_after_iend_chunk.png
spec/resources/ztxt_chunk.png
spec/spec_helper.rb
tasks/benchmarks.rake
Homepage: https://github.com/wvanbergen/chunky_png/wiki
Licenses: MIT
Metadata: {"source_code_uri"=>"https://github.com/wvanbergen/chunky_png", "wiki_uri"=>"https://github.com/wvanbergen/chunky_png/wiki"}
Rdoc options: --title
chunky_png
--main
README.rdoc
--line-numbers
--inline-source
Require paths: lib
Required ruby version: >= 2.0
Required rubygems version: >= 0
Rubygems version: 3.0.3
Specification version: 4
Summary: Pure ruby library for read/write, chunk-level access to PNG files
Test files: spec/chunky_png/canvas/adam7_interlacing_spec.rb
spec/chunky_png/canvas/data_url_exporting_spec.rb
spec/chunky_png/canvas/data_url_importing_spec.rb
spec/chunky_png/canvas/drawing_spec.rb
spec/chunky_png/canvas/masking_spec.rb
spec/chunky_png/canvas/operations_spec.rb
spec/chunky_png/canvas/png_decoding_spec.rb
spec/chunky_png/canvas/png_encoding_spec.rb
spec/chunky_png/canvas/resampling_spec.rb
spec/chunky_png/canvas/stream_exporting_spec.rb
spec/chunky_png/canvas/stream_importing_spec.rb
spec/chunky_png/canvas_spec.rb
spec/chunky_png/color_spec.rb
spec/chunky_png/datastream_spec.rb
spec/chunky_png/dimension_spec.rb
spec/chunky_png/image_spec.rb
spec/chunky_png/point_spec.rb
spec/chunky_png/rmagick_spec.rb
spec/chunky_png/vector_spec.rb
spec/chunky_png_spec.rb
spec/png_suite/background_chunks/bgai4a08.png
spec/png_suite/background_chunks/bgai4a16.png
spec/png_suite/background_chunks/bgan6a08.png
spec/png_suite/background_chunks/bgan6a16.png
spec/png_suite/background_chunks/bgbn4a08.png
spec/png_suite/background_chunks/bggn4a16.png
spec/png_suite/background_chunks/bgwn6a08.png
spec/png_suite/background_chunks/bgyn6a16.png
spec/png_suite/basic/basi0g01.png
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spec/png_suite/filtering/f01n0g08_reference.rgba
spec/png_suite/filtering/f01n2c08.png
spec/png_suite/filtering/f01n2c08.rgba
spec/png_suite/filtering/f01n2c08_reference.png
spec/png_suite/filtering/f01n2c08_reference.rgba
spec/png_suite/filtering/f02n0g08.png
spec/png_suite/filtering/f02n0g08.rgba
spec/png_suite/filtering/f02n0g08_reference.png
spec/png_suite/filtering/f02n0g08_reference.rgba
spec/png_suite/filtering/f02n2c08.png
spec/png_suite/filtering/f02n2c08.rgba
spec/png_suite/filtering/f02n2c08_reference.png
spec/png_suite/filtering/f02n2c08_reference.rgba
spec/png_suite/filtering/f03n0g08.png
spec/png_suite/filtering/f03n0g08.rgba
spec/png_suite/filtering/f03n0g08_reference.png
spec/png_suite/filtering/f03n0g08_reference.rgba
spec/png_suite/filtering/f03n2c08.png
spec/png_suite/filtering/f03n2c08.rgba
spec/png_suite/filtering/f03n2c08_reference.png
spec/png_suite/filtering/f03n2c08_reference.rgba
spec/png_suite/filtering/f04n0g08.png
spec/png_suite/filtering/f04n0g08.rgba
spec/png_suite/filtering/f04n0g08_reference.png
spec/png_suite/filtering/f04n0g08_reference.rgba
spec/png_suite/filtering/f04n2c08.png
spec/png_suite/filtering/f04n2c08.rgba
spec/png_suite/filtering/f04n2c08_reference.png
spec/png_suite/filtering/f04n2c08_reference.rgba
spec/png_suite/gamma/g03n0g16.png
spec/png_suite/gamma/g03n2c08.png
spec/png_suite/gamma/g03n3p04.png
spec/png_suite/gamma/g04n0g16.png
spec/png_suite/gamma/g04n2c08.png
spec/png_suite/gamma/g04n3p04.png
spec/png_suite/gamma/g05n0g16.png
spec/png_suite/gamma/g05n2c08.png
spec/png_suite/gamma/g05n3p04.png
spec/png_suite/gamma/g07n0g16.png
spec/png_suite/gamma/g07n2c08.png
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spec/png_suite/gamma/g10n0g16.png
spec/png_suite/gamma/g10n2c08.png
spec/png_suite/gamma/g10n3p04.png
spec/png_suite/gamma/g25n0g16.png
spec/png_suite/gamma/g25n2c08.png
spec/png_suite/gamma/g25n3p04.png
spec/png_suite/metadata/cm0n0g04.png
spec/png_suite/metadata/cm7n0g04.png
spec/png_suite/metadata/cm9n0g04.png
spec/png_suite/other/ccwn2c08.png
spec/png_suite/other/ccwn3p08.png
spec/png_suite/other/cdfn2c08.png
spec/png_suite/other/cdhn2c08.png
spec/png_suite/other/cdsn2c08.png
spec/png_suite/other/cdun2c08.png
spec/png_suite/other/ch1n3p04.png
spec/png_suite/other/ch2n3p08.png
spec/png_suite/other/cs3n2c16.png
spec/png_suite/other/cs3n3p08.png
spec/png_suite/other/cs5n2c08.png
spec/png_suite/other/cs5n3p08.png
spec/png_suite/other/cs8n2c08.png
spec/png_suite/other/cs8n3p08.png
spec/png_suite/other/ct0n0g04.png
spec/png_suite/other/ct1n0g04.png
spec/png_suite/other/ctzn0g04.png
spec/png_suite/other/pp0n2c16.png
spec/png_suite/other/pp0n6a08.png
spec/png_suite/other/ps1n0g08.png
spec/png_suite/other/ps1n2c16.png
spec/png_suite/other/ps2n0g08.png
spec/png_suite/other/ps2n2c16.png
spec/png_suite/sizes/s01i3p01.png
spec/png_suite/sizes/s01n3p01.png
spec/png_suite/sizes/s02i3p01.png
spec/png_suite/sizes/s02n3p01.png
spec/png_suite/sizes/s03i3p01.png
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spec/png_suite/sizes/s04i3p01.png
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spec/png_suite/sizes/s05i3p02.png
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spec/png_suite/sizes/s06i3p02.png
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spec/png_suite/sizes/s07i3p02.png
spec/png_suite/sizes/s07n3p02.png
spec/png_suite/sizes/s08i3p02.png
spec/png_suite/sizes/s08n3p02.png
spec/png_suite/sizes/s09i3p02.png
spec/png_suite/sizes/s09n3p02.png
spec/png_suite/sizes/s32i3p04.png
spec/png_suite/sizes/s32n3p04.png
spec/png_suite/sizes/s33i3p04.png
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spec/png_suite/sizes/s34i3p04.png
spec/png_suite/sizes/s34n3p04.png
spec/png_suite/sizes/s35i3p04.png
spec/png_suite/sizes/s35n3p04.png
spec/png_suite/sizes/s36i3p04.png
spec/png_suite/sizes/s36n3p04.png
spec/png_suite/sizes/s37i3p04.png
spec/png_suite/sizes/s37n3p04.png
spec/png_suite/sizes/s38i3p04.png
spec/png_suite/sizes/s38n3p04.png
spec/png_suite/sizes/s39i3p04.png
spec/png_suite/sizes/s39n3p04.png
spec/png_suite/sizes/s40i3p04.png
spec/png_suite/sizes/s40n3p04.png
spec/png_suite/transparency/tbbn1g04.png
spec/png_suite/transparency/tbbn2c16.png
spec/png_suite/transparency/tbbn3p08.png
spec/png_suite/transparency/tbgn2c16.png
spec/png_suite/transparency/tbgn3p08.png
spec/png_suite/transparency/tbrn2c08.png
spec/png_suite/transparency/tbwn1g16.png
spec/png_suite/transparency/tbwn3p08.png
spec/png_suite/transparency/tbyn3p08.png
spec/png_suite/transparency/tp0n1g08.png
spec/png_suite/transparency/tp0n2c08.png
spec/png_suite/transparency/tp0n3p08.png
spec/png_suite/transparency/tp1n3p08.png
spec/png_suite_spec.rb
spec/resources/adam7.png
spec/resources/bezier_five_point.png
spec/resources/bezier_four_point.png
spec/resources/bezier_four_point_flipped.png
spec/resources/bezier_four_point_s.png
spec/resources/bezier_six_point.png
spec/resources/bezier_three_point.png
spec/resources/bezier_three_point_flipped.png
spec/resources/circles.png
spec/resources/clock.png
spec/resources/clock_base.png
spec/resources/clock_bl_xdown_ydown.png
spec/resources/clock_bl_xdown_yup.png
spec/resources/clock_bl_xup_yup.png
spec/resources/clock_mask.png
spec/resources/clock_mask_updated.png
spec/resources/clock_nn_xdown_ydown.png
spec/resources/clock_nn_xdown_yup.png
spec/resources/clock_nn_xup_yup.png
spec/resources/clock_updated.png
spec/resources/composited.png
spec/resources/cropped.png
spec/resources/cropped_height.png
spec/resources/damaged_chunk.png
spec/resources/damaged_signature.png
spec/resources/empty.png
spec/resources/itxt_chunk.png
spec/resources/lines.png
spec/resources/operations.png
spec/resources/operations_border.png
spec/resources/operations_grayscale.png
spec/resources/partial_circles.png
spec/resources/pixelstream.bgr
spec/resources/pixelstream.rgb
spec/resources/pixelstream.rgba
spec/resources/pixelstream_best_compression.png
spec/resources/pixelstream_fast_rgba.png
spec/resources/pixelstream_reference.png
spec/resources/polygon_filled_horizontal.png
spec/resources/polygon_filled_vertical.png
spec/resources/polygon_triangle_filled.png
spec/resources/polygon_unfilled.png
spec/resources/rect.png
spec/resources/replaced.png
spec/resources/text_chunk.png
spec/resources/trailing_bytes_after_iend_chunk.png
spec/resources/ztxt_chunk.png
spec/spec_helper.rb
Original platform: ruby
New platform: ruby

Top-Level Modules

ChunkyPNG