minicomic-backend/classes/Filter.rb
2010-01-05 22:07:30 -05:00

59 lines
1.3 KiB
Ruby

class Filter
@config = {}
@cleanup = []
attr_accessor :config, :cleanup
def initialize
@config = {}
@cleanup = []
end
def cleanup
@cleanup.each do |f|
if File.exists? f; File.unlink(f); end
end
end
def recalc_pixels
if @config['print']
if !@config['dpi']; raise "DPI not defined"; end
if (@config['dpi'].to_i.to_s) != @config['dpi'].to_s; raise "DPI not integer"; end
if @config['width_inches'] && (@config['width_inches'].to_f != 0)
@config['width'] = (@config['width_inches'].to_f * @config['dpi'].to_f).to_i
else
@config.delete('width')
end
if @config['height_inches'] && (@config['height_inches'].to_f != 0)
@config['height'] = (@config['height_inches'].to_f * @config['dpi'].to_f).to_i
else
@config.delete('height')
end
if (!@config['width'] && !@config['height'])
raise "No dimensions defined!"
end
end
end
#
# Set the config
#
def config=(c)
@config = c
recalc_pixels
end
#
# Get the dimensions of a file
#
def get_dimensions(input)
dimensions = nil
IO.popen("identify -format '%w,%h' \"#{input}\"") do |fh|
dimensions = fh.readlines.first.split(",").collect { |d| d.to_i }
end
dimensions
end
end