Module: FN::PDF::Node::CreateTextflow

Extended by:
CreateTextflow
Includes:
Node::Base
Included in:
CreateTextflow
Defined in:
lib/fn/pdf/node/create_textflow.rb

Constant Summary collapse

NL = 
/\r|\n/
SPACE = 
/\s+/
BASE_FORMAT = 
{
  "face" => "Arial",
  "size" => "12",
  "blockindent" => "0",
  "indent" => "0",
  "leftmargin" => "0",
  "rightmargin" => "0",
  "leading" => "2",
  "color" => "#0000FF",
  "align" => "left",
  "bold" => false,
  "italic" => false,
  "underline" => false
}

Constants included from Node::Base

Node::Base::CURRENT_PAGE_HEIGHT, Node::Base::CURRENT_PAGE_WIDTH

Instance Method Summary collapse

Methods included from Node::Base

#classify, #has_no_children, #mixin, #value, #visit_children, #with_attributes_like

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fn/pdf/node/create_textflow.rb', line 44

def empty?
  inner_text.gsub(/<[^>]*>|\s+/, '').empty?
end

#flow_name(node = nil) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 32

def flow_name(node = nil)
  if node
    if node["id"]
      "flow-#{node["id"]}"
    else
      "flow-#{node["text"]}-#{node["index"]}"
    end
  else
    self["assigns"]
  end
end

#format(node, buffer = "<fontname=Arial encoding=#{Writer.encoding} fontsize=10>", options = BASE_FORMAT) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 95

def format(node, buffer = "<fontname=Arial encoding=#{Writer.encoding} fontsize=10>", options = BASE_FORMAT)
  return nil unless node
  
  options = options.dup
  if node.text?
    buffer << formatter(options)
    buffer << node.to_s.gsub(NL, '') 
  elsif node.element?
    case node.name.downcase
    when "br"
      buffer << "<nextline>"
    when "b"
      options["bold"] = true
    when "i"
      options["italic"] = true
    when "u"
      options["underline"] = true
    when "li"
      buffer << "&bull;&nbsp;"
    when "font"
      options["size"]   = node["size"]  if node["size"]
      options["face"]   = node["face"]  if node["face"]
      options["color"]  = node["color"] if node["color"]
      
      options["size"]   = node["SIZE"]  if node["SIZE"]
      options["face"]   = node["FACE"]  if node["FACE"]
      options["color"]  = node["COLOR"] if node["COLOR"]
    end
      
    node.children.each{|c| format(c, buffer, options)}
    
    case node.name.downcase
    when "p", "li"
      buffer << "<nextparagraph>"
    end
  else
    raise "unhandled node type"
  end
  return buffer
end

#format_color(hex) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 91

def format_color(hex)
  hex.scan(/[\da-f]{2}/i).map{|s| s.to_i(16) / 255.0 }.join(" ")
end

#format_face(attrs) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 83

def format_face(attrs)
  # titlecase
  face = attrs["face"].split(SPACE).map{|s| s.capitalize }.join(" ")
  face += ",Bold" if attrs["bold"]
  face += ",Italic" if attrs["italic"]
  return face
end

#formatter(options) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 57

def formatter(options)
  attrs = options.dup
  attrs["leftindent"] = (attrs["blockindent"].to_f + attrs["leftmargin"].to_f).to_i
  attrs["totalleading"] = (attrs["size"].to_f + attrs["leading"].to_f).to_i
  # puts attrs.inspect
  attrs["formatted_color"] = format_color(attrs["color"])
  attrs["formatted_face"] = format_face(attrs)
  %(<encoding=unicode 
  embedding=true 
  adjustmethod=nofit 
  nofitlimit=100% 
  minspacing=100% 
  maxspacing=100% 
  kerning=true 
  charref=true
  fontname={#{attrs["formatted_face"]}} 
  fontsize=#{attrs['size']} 
  leftindent=#{attrs['leftindent']}
  rightindent=#{attrs['rightmargin']}
  leading=#{attrs["totalleading"]} 
  fillcolor={rgb #{attrs["formatted_color"]}}
  parindent=#{attrs["indent"]}
  underline=#{attrs['underline']}
  alignment=#{attrs["align"]}>).gsub(SPACE, ' ')
end

#inner_text ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 48

def inner_text
  child.to_s.gsub("<![CDATA[", "").gsub("]]>", "")
end

#visit(struct, debug = false) ⇒ Object 



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# File 'lib/fn/pdf/node/create_textflow.rb', line 52

def visit(struct, debug = false)
  tf = struct.create_textflow(inner_text, "")
  struct.assigns self, tf
end