Module: Helpema::ZBar

Extended by:
Helpema, ZBar
Included in:
ZBar
Defined in:
lib/helpema/zbar.rb

Constant Summary

Constants included from Helpema

VERSION

Class Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpema

define_command, requires, run_command, to_arg

Class Attribute Details

.screenshot ⇒ Object

Returns the value of attribute screenshot.



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# File 'lib/helpema/zbar.rb', line 6

def screenshot
  @screenshot
end

.version ⇒ Object

Returns the value of attribute version.



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# File 'lib/helpema/zbar.rb', line 6

def version
  @version
end

Instance Method Details

#cam ⇒ Object 



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# File 'lib/helpema/zbar.rb', line 26

def cam() = ZBar._cam()

#img(filename) ⇒ Object 



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# File 'lib/helpema/zbar.rb', line 33

def img(filename) = ZBar._img(filename:filename)

#screen ⇒ Object 



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# File 'lib/helpema/zbar.rb', line 35

def screen
  raw = nil
  Dir.mktmpdir do |tmpdir|
   _ = File.join(tmpdir, "#{$$}.#{Time.now.to_f}.png")
   raw = _ if ZBar.snapshot(_) and not (_=ZBar.img(_).chomp).empty?
  end
  raw
end

#snapshot(filename) ⇒ Object 



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# File 'lib/helpema/zbar.rb', line 10

def snapshot(filename)
  system(*ZBar.screenshot, filename)
end