Class: DYI::Formatter::EpsFormatter

Inherits:
Base
  • Object
show all
Defined in:
lib/dyi/formatter/eps_formatter.rb,
lib/ironruby.rb

Overview

Since:

  • 0.0.0

Instance Method Summary collapse

Methods inherited from Base

#initialize, #save, #string, #write_image

Constructor Details

This class inherits a constructor from DYI::Formatter::Base

Instance Method Details

#base_transform ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 59

def base_transform
  pt_ratio = 1.quo(Length.unit_ratio('pt'))
  <<-EOS
[#{pt_ratio} 0 0 -#{pt_ratio} 0 #{@canvas.real_height * pt_ratio}] concat
  EOS
end

#footer_comment ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 53

def footer_comment
  <<-EOS
%%EOF
  EOS
end

#header_comment ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 30

def header_comment
  <<-EOS
%!PS-Adobe-3.0 EPSF-3.0
%%Creator: DYI #{DYI::VERSION} (#{DYI::URL})
%%CreationDate: #{Time.now.strftime('%a %b %d %H:%M:%S %Y')}
%%BoundingBox: 0 0 #{@canvas.real_width.to_f('pt').ceil}  #{@canvas.real_height.to_f('pt').ceil}
%%EndComments
  EOS
end

#prolog ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 40

def prolog
  <<-EOS
%%BeginProlog
/px { } bind def
/pt { #{Length.unit_ratio('pt')} mul } bind def
/cm { #{Length.unit_ratio('cm')} mul } bind def
/mm { #{Length.unit_ratio('mm')} mul } bind def
/in { #{Length.unit_ratio('in')} mul } bind def
/pc { #{Length.unit_ratio('pc')} mul } bind def
%%EndProlog
  EOS
end

#puts(io = $>) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 66

def puts(io=$>)
  StringFormat.set_default_formats(:color=>['%.3f %.3f %.3f', true], :length=>'0.### U', :coordinate=>'x y') {
    if @canvas.root_element?
      io << header_comment
      io << prolog
      io << base_transform
    end
    @canvas.write_as(self, io)
    if @canvas.root_element?
      io << footer_comment
    end
  }
end

#write_canvas(canvas, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 80

def write_canvas(canvas, io)
  canvas.child_elements.each do |element|
    element.write_as(self, io)
  end
end

#write_circle(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 105

def write_circle(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    puts_line(io, shape.center.x + shape.radius, shape.center.y, 'moveto')
    puts_line(io, shape.center.x, shape.center.y, shape.radius, 0, 360, 'arc')
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_ellipse(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 121

def write_ellipse(shape, io)
  ratio = shape.radius_x.to_f / shape.radius_y.to_f
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 1, 1.0 / ratio, 'scale')
    puts_line(io, 'newpath')
    puts_line(io, shape.center.x + shape.radius_x, shape.center.y * ratio, 'moveto')
    puts_line(io, shape.center.x, shape.center.y * ratio, shape.radius_x, 0, 360, 'arc')
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_group(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 237

def write_group(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    shape.child_elements.each do |element|
      element.write_as(self, io)
    end
  } unless shape.child_elements.empty?
end

#write_line(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 139

def write_line(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    write_lines(io, [shape.start_point, shape.end_point])
    if block_given?
      yield
    else
      stroke_current_path(io, shape)
    end
  }
end

#write_path(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 184

def write_path(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    shape.compatible_path_data.each do |cmd|
      case cmd
      when Shape::Path::MoveCommand
        puts_line(io, cmd.point.x, cmd.point.y, cmd.relative? ? 'rmoveto' : 'moveto')
      when Shape::Path::CloseCommand
        puts_line(io, 'closepath')
      when Shape::Path::LineCommand
        puts_line(io, cmd.point.x, cmd.point.y, cmd.relative? ? 'rlineto' : 'lineto')
      when Shape::Path::CurveCommand
        puts_line(io,
                  cmd.control_point1.x, cmd.control_point1.y,
                  cmd.control_point2.x, cmd.control_point2.y,
                  cmd.point.x, cmd.point.y,
                  cmd.relative? ? 'rcurveto' : 'curveto')
      else
        raise TypeError, "unknown command: #{cmd.class}"
      end
    end
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_polygon(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 168

def write_polygon(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    write_lines(io, shape.points)
    puts_line(io, 'closepath')
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_polyline(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 153

def write_polyline(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    write_lines(io, shape.points)
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_rectangle(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/dyi/formatter/eps_formatter.rb', line 86

def write_rectangle(shape, io)
  command_block(io) {
    transform_path(io, shape)
    clip_path(io, shape)
    puts_line(io, 'newpath')
    puts_line(io, shape.left, shape.top, 'moveto')
    puts_line(io, shape.width, 0, 'rlineto')
    puts_line(io, 0, shape.height, 'rlineto')
    puts_line(io, -shape.width, 0, 'rlineto')
    puts_line(io, 'closepath')
    if block_given?
      yield
    else
      fill_current_path(io, shape)
      stroke_current_path(io, shape)
    end
  }
end

#write_text(shape, io) ⇒ Object

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  • 0.0.0



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# File 'lib/ironruby.rb', line 298

def write_text(shape, io)
  command_block(io) {
    puts_line(io, '/GothicBBB-Medium-RKSJ-H findfont', shape.font.draw_size, 'scalefont setfont')
    text = String.new(
        System::Text::Encoding.convert(
          System::Text::Encoding.get_encoding('UTF-8'),
          System::Text::Encoding.get_encoding('Shift_JIS'),
          shape.formated_text
        )
      ).unpack('H*').first
#          text = NKF.nkf('-s -W', shape.formated_text).unpack('H*').first
    case shape.attributes[:text_anchor]
      when 'middle' then dx = "<#{text}> stringwidth pop -0.5 mul"
      when 'end' then dx = "<#{text}> stringwidth pop -1 mul"
      else dx = "0"
    end
    case shape.attributes[:alignment_baseline]
      when 'top' then y = shape.point.y - shape.font_height * 0.85
      when 'middle' then y = shape.point.y - shape.font_height * 0.35
      when 'bottom' then y = shape.point.y + shape.font_height * 0.15
      else y = shape.point.y
    end
    puts_line(io, "[ 1 0 0 -1 #{dx}", shape.point.y * 2, '] concat')
    puts_line(io, shape.point.x, y, 'moveto')
    puts_line(io, "<#{text}>", 'show')
  }
end