# File lib/barby/outputter/cairo_outputter.rb, line 150
150:     def full_height(options={})
151:       height(options) + (margin(options) * 2)
152:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 146
146:     def full_width(options={})
147:       width(options) + (margin(options) * 2)
148:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 138
138:     def height(options={})
139:       if barcode.two_dimensional?
140:         encoding.size * xdim(options)
141:       else
142:         @height || options[:height] || 50
143:       end
144:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 158
158:     def margin(options={})
159:       @margin || options[:margin] || 10
160:     end

    # File lib/barby/outputter/cairo_outputter.rb, line 27
27:     def render_to_cairo_context(context, options={})
28:       if context.respond_to?(:have_current_point?) and
29:           context.have_current_point?
30:         current_x, current_y = context.current_point
31:       else
32:         current_x = x(options) || margin(options)
33:         current_y = y(options) || margin(options)
34:       end
35: 
36:       _xdim = xdim(options)
37:       _height = height(options)
38:       original_current_x = current_x
39:       context.save do
40:         context.set_source_color(:black)
41:         context.fill do
42:           if barcode.two_dimensional?
43:             boolean_groups.each do |groups|
44:               groups.each do |bar,amount|
45:                 current_width = _xdim * amount
46:                 if bar
47:                   context.rectangle(current_x, current_y, current_width, _xdim)
48:                 end
49:                 current_x += current_width
50:               end
51:               current_x = original_current_x
52:               current_y += _xdim
53:             end
54:           else
55:             boolean_groups.each do |bar,amount|
56:               current_width = _xdim * amount
57:               if bar
58:                 context.rectangle(current_x, current_y, current_width, _height)
59:               end
60:               current_x += current_width
61:             end
62:           end
63:         end
64:       end
65: 
66:       context
67:     end

    # File lib/barby/outputter/cairo_outputter.rb, line 97
97:     def to_eps(options={})
98:       to_ps(options.merge(:eps => true))
99:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 103
103:     def to_pdf(options={})
104:       output_to_string_io do |io|
105:         Cairo::PDFSurface.new(io,
106:                               full_width(options),
107:                               full_height(options)) do |surface|
108:           render(surface, options)
109:         end
110:       end
111:     end

    # File lib/barby/outputter/cairo_outputter.rb, line 71
71:     def to_png(options={})
72:       output_to_string_io do |io|
73:         Cairo::ImageSurface.new(options[:format],
74:                                 full_width(options),
75:                                 full_height(options)) do |surface|
76:           render(surface, options)
77:           surface.write_to_png(io)
78:         end
79:       end
80:     end

    # File lib/barby/outputter/cairo_outputter.rb, line 84
84:     def to_ps(options={})
85:       output_to_string_io do |io|
86:         Cairo::PSSurface.new(io,
87:                              full_width(options),
88:                              full_height(options)) do |surface|
89:           surface.eps = options[:eps] if surface.respond_to?(:eps=)
90:           render(surface, options)
91:         end
92:       end
93:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 115
115:     def to_svg(options={})
116:       output_to_string_io do |io|
117:         Cairo::SVGSurface.new(io,
118:                               full_width(options),
119:                               full_height(options)) do |surface|
120:           render(surface, options)
121:         end
122:       end
123:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 134
134:     def width(options={})
135:       (barcode.two_dimensional? ? encoding.first.length : encoding.length) * xdim(options)
136:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 126
126:     def x(options={})
127:       @x || options[:x]
128:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 154
154:     def xdim(options={})
155:       @xdim || options[:xdim] || 1
156:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 130
130:     def y(options={})
131:       @y || options[:y]
132:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 165
165:     def output_to_string_io
166:       io = StringIO.new
167:       yield(io)
168:       io.rewind
169:       io.read
170:     end

     # File lib/barby/outputter/cairo_outputter.rb, line 173
173:     def render(surface, options)
174:       context = Cairo::Context.new(surface)
175:       yield(context) if block_given?
176:       context.set_source_color(options[:background] || :white)
177:       context.paint
178:       render_to_cairo_context(context, options)
179:       context
180:     end