prawn-fast-png¶ ↑

An extension of Prawn that improves the performance when embedding PNG images containing an alpha channel. Uses RMagick to separate RGB and alpha channels.

Usage¶ ↑

This gem doesn’t introduce any API changes, so please refer to Prawn’s RDoc.

require 'prawn'
require 'prawn/fast_png'

pdf = Prawn::Document.new
pdf.image 'dice.png'
pdf.render_file 'example.pdf'

Running Prawn’s tests¶ ↑

cd path_to_prawn_src
git tag # available versions
git checkout version.tag
# or
git checkout master
cd -
rake test PRAWN_DIR=path_to_prawn_src

for versions 0.5.1-0.8.3 add PRAWN_REQUIRE=prawn/core option

rake test PRAWN_DIR=path_to_prawn_src PRAWN_REQUIRE=prawn/core

GitHub¶ ↑

github.com/amberbit/prawn-fast-png

Mailing list¶ ↑

groups.google.com/group/prawn-ruby

Credits¶ ↑

prawn-fast-png is maintained by Wojciech Piekutowski, and is funded by AmberBit.