Vertical alignment in PDF tables is broken

[rsynnest]

Valign does not work. :top ends up centered, :center ends up at the bottom, and :bottom ends up at the bottom correctly.

The original valign code was added in prawn:5cddc78a

I've written a small script that can be used to quickly test/iterate, for anyone out there who wants to try a fix. I am not a Ruby dev and there are no build instructions for this repo so I just slapped this together:

Build Environment

Project files:

main.rb
./prawn-table/    <----- clone of this repo

To rebuild the Gem with your changes, and rebuild the PDF:

cd ./prawn-table
rm prawn-table-*.gem && gem build prawn-table.gemspec
cd -
ruby main.rb

Contents of main.rb:

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'prawn'
  gem 'prawn-table', :path => './prawn-table'
end


Prawn::Document.generate('result.pdf') do

data = [ ["TOP", "", ""], ]
table data, :cell_style => { :valign => :top}
move_down 20

data = [ ["CENTER", "", ""], ]
table data, :cell_style => { :valign => :center}
move_down 20

data = [ ["BOTTOM", "", ""], ]
table data, :cell_style => { :valign => :bottom}
move_down 20


end

Results

The current codebase results in the following:

Simply commenting out prawn/table/cell/text.rb line 69 gives a better result in my opinion: