Class: SVGUtilities

Inherits:
Object
  • Object
show all
Defined in:
lib/IFMapper/SVGMapExporter.rb

Class Method Summary collapse

Class Method Details

.add_compass(svg) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 91

def self.add_compass(svg)
  compassgroup = SVGUtilities::get_compass_svg_group()
      
  defs = svg.root.add_element "defs"
  
  defs.add_element compassgroup
  
  return svg
end

.add_text(svg, x, y, font_size, text, opts, fill_colour) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 28

def self.add_text( svg, x, y, font_size, text, opts, fill_colour )
  if DEBUG_OUTPUT; puts "svg::FXMap::svg_draw_name_text:" end
  y = y + font_size

  t = svg.root.add_element "text", {
  "x"            => x,
  "y"            => y,
  "style"        => "font-size:" + font_size.to_s() + "pt;fill:#" + fill_colour.to_s()}

  t.text = text

  return [svg, x, y]
end

.add_titles(svg, opts, x, y, font_size, mapname, mapcreator) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 147

def self.add_titles( svg, opts, x, y, font_size, mapname, mapcreator )
  if DEBUG_OUTPUT; puts "svg::SVGUtilities::add_titles" end

  if opts['print_title'] == true
    if not mapname or mapname == ''
      if DEBUG_OUTPUT; puts "svg::SVGUtilities::add_titles:name is empty, not printing" end
    else
      svg, x, y = SVGUtilities::add_text(svg, x, y, font_size*1.5, mapname, opts, '000000')
      y = y + (opts['name_line_spacing'] * 4)
    end
  end

  if opts['print_creator'] == true
    if not mapcreator or mapcreator == ''
      if DEBUG_OUTPUT; puts "svg::SVGUtilities::add_titles:creator is empty, not printing" end
    else
      svg, x, y = SVGUtilities::add_text(svg, x, y, font_size*0.85, 'Map ' + opts['creator_prefix'] + mapcreator, opts, '000000')
      y = y + (opts['name_line_spacing'] * 4)
    end
  end
  
  return [svg, x, y]
end

.break_text_lines(text, maxlinelength) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 50

def self.break_text_lines( text, maxlinelength )
  if DEBUG_OUTPUT; printf("SVGUtilities::break_text_lines:text=%s\r\n", text) end
  
  out = Array.new

  max_chars = maxlinelength
  words = text.split(" ")
  cur_str = ""

  words.each { |word|
    new_len = cur_str.length + word.length
    if DEBUG_OUTPUT; printf("SVGUtilities::break_text_lines:current word: %s :: new_len: %d\r\n", word, new_len) end
    new_len = cur_str.length + word.length
    if new_len <= max_chars
      cur_str = cur_str + word + " "
    else
      out << cur_str
      cur_str = "" + word + " "
    end
  }
  out << cur_str

  return out
end

.get_compass_svg_group ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 75

def self.get_compass_svg_group()
  
  file = File.new( "icons/compass.svg" )
  doc = REXML::Document.new file
  
  newgroup = REXML::Element.new "g"
  newgroup.attributes["id"] = "compass"
  
  doc.root.elements.each {|elem|
    newgroup.add_element(elem)  
  }
  
  return newgroup
      
end

.new_svg_doc(width, height) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 14

def self.new_svg_doc ( width, height)
  svg = REXML::Document.new
  svg << REXML::XMLDecl.new

  svg.add_element "svg", {
      "width"        => width,
      "height"    => height,
      "version"    => "1.1",
      "xmlns"        => "http://www.w3.org/2000/svg",
      "xmlns:xlink" => "http://www.w3.org/1999/xlink"}
  return svg
  
end

.num_text_lines(text, maxlinelength) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 42

def self.num_text_lines ( text, maxlinelength )
  if text and not text == ''
    return SVGUtilities::break_text_lines(text.chomp().strip(), maxlinelength).length
  else
    return 0
  end
end

.svg_add_script(svg, opts) ⇒ Object 



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# File 'lib/IFMapper/SVGMapExporter.rb', line 102

def self.svg_add_script( svg, opts )
  svg.root.attributes["onload"] = "Init(evt)"

  script = svg.root.add_element "script", {
  "type"            => "text/ecmascript" }

  script.add( REXML::CData.new("
  var SVGDocument = null;
  var SVGRoot = null;

  function Init(evt)
  {
     SVGDocument = evt.target.ownerDocument;
     SVGRoot = SVGDocument.documentElement;
  }

  function ToggleOpacity(evt, targetId)
  {
     var newTarget = evt.target;
     if (targetId)
     {
        newTarget = SVGDocument.getElementById(targetId);
     }
     var newValue = newTarget.getAttributeNS(null, 'opacity')

     if ('0' != newValue)
     {
        newValue = '0';
     }
     else
     {
        newValue = '1';
     }
     newTarget.setAttributeNS(null, 'opacity', newValue);

     if (targetId)
     {
        SVGDocument.getElementById(targetId + 'Exception').setAttributeNS(null, 'opacity', '1');
     }
  }
  "))

  return svg;
end