Class: SimpleMapnik::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/simple_mapnik/config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Config

Returns a new instance of Config.



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# File 'lib/simple_mapnik/config.rb', line 19

def initialize(path)
  @path = path
  @settings ||= File.exist?(config_file) ? YAML.load_file(config_file) : {}
end

Instance Attribute Details

#background_color ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 40

def background_color
  @background_color ||= settings.fetch('background_color', '#483d8b')
end

#line_stroke_color ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 48

def line_stroke_color
  @line_stroke_color ||= settings.fetch('line_stroke_color', '#483d8b')
end

#line_stroke_width ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 52

def line_stroke_width
  @line_stroke_width ||= settings.fetch('line_stroke_width', '0.2')
end

#marker_fill ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 56

def marker_fill
  @marker_fill ||= settings.fetch('marker_fill', '#0000ff')
end

#marker_height ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 64

def marker_height
  @marker_height ||= settings.fetch('marker_height', '5')
end

#marker_stroke_color ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 68

def marker_stroke_color
  @marker_stroke_color ||= settings.fetch('marker_stroke_color', '#483d8b')
end

#marker_stroke_width ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 72

def marker_stroke_width
  @marker_stroke_width ||= settings.fetch('marker_stroke_width', '0.2')
end

#marker_width ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 60

def marker_width
  @marker_width ||= settings.fetch('marker_width', '5')
end

#polygon_fill_color ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 44

def polygon_fill_color
  @polygon_fill_color ||= settings.fetch('polygon_fill_color', '#fffff0')
end

#settings ⇒ Object (readonly)

Returns the value of attribute settings.



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# File 'lib/simple_mapnik/config.rb', line 6

def settings
  @settings
end

#srs ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 32

def srs
  @srs ||= '+init=epsg:4326'
end

#type ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 36

def type
  @type ||= 'shape'
end

Instance Method Details

#config_file ⇒ Object 



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# File 'lib/simple_mapnik/config.rb', line 24

def config_file
  if defined?(Rails) && Rails.root
    File.join(Rails.root, 'config/mapnik.yml')
  else
    File.expand_path('../../config/mapnik.yml', File.dirname(__FILE__))
  end
end

#xml ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/simple_mapnik/config.rb', line 77

def xml
  Nokogiri::XML::Builder.new do |xml|
    xml.Map(srs: srs, :'background-color' => background_color) do
      xml.Style(name: 'style') do
        xml.Rule() do
          xml.Filter('[mapnik::geometry_type]=point')
          xml.MarkersSymbolizer(
            fill: marker_fill,
            width: marker_width,
            height: marker_height,
            stroke: marker_stroke_color,
            :'stroke-width' => marker_stroke_width,
            :'allow-overlap' => 'true'
          )
        end
        xml.Rule() do
          xml.PolygonSymbolizer(fill: polygon_fill_color)
          xml.LineSymbolizer(
            stroke: line_stroke_color,
            :'stroke-width' => line_stroke_width)
        end
      end
      xml.Layer(name: 'layer', srs: srs) do
        xml.StyleName 'style'
        xml.Datasource do
          xml.Parameter(@path, name: 'file')
          xml.Parameter(type, name: 'type')
        end
      end
    end
  end.to_xml
  # rubocop:enable Metrics/AbcSize, Metrics/MethodLength
end