`PNG`¶ ↑

home: github.com/seattlerb/png
bugs: github.com/seattlerb/png/issues
doco: docs.seattlerb.org/png

DESCRIPTION¶ ↑

PNG is an almost-pure-ruby PNG library. It lets you write a PNG without any C libraries.

FEATURES¶ ↑

Very simple interface.
Outputs simple PNG files with ease.
Basic PNG reader as well (someday it might do compositing and the like!).
Almost pure ruby, does require a compiler.

SYNOPSIS¶ ↑

require "png"

canvas = PNG::Canvas.new 200, 200

# Set a point to a color
canvas[100, 100] = PNG::Color::Black

# draw an anti-aliased line
canvas.line 50, 50, 100, 50, PNG::Color::Blue

png = PNG.new canvas
png.save "blah.png"

REQUIREMENTS¶ ↑

+ C compiler + RubyInline + Hoe

INSTALL¶ ↑

+ sudo gem install png

LICENSE¶ ↑

(The MIT License)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.