# colors.rb

    #!/usr/local/bin/ruby18 -w
    require 'RMagick'
    include Magick

    puts("Creating colors.miff. This may take a few seconds...")

    colors = ImageList.new

    # Add a row of "null" colors so we'll have
    # room to add the title at the top.
    4.times { colors.read('null:') }

    puts("\tCreating color swatches...")

    # Create a 200x25 image for each named color.
    # Label with the name, RGB values, and compliance type.
    colors { |c|
        if c.name !~ /grey/ then    # omit SVG 'grays'
            colors.new_image(200, 25) {
                self.background_color = c.color
                self.border_color = 'gray50'
                }
            rgb  = sprintf('#%02x%02x%02x', c.color.red&0xff,  c.color.green&0xff, c.color.blue&0xff)
            rgb += sprintf('%02x', c.color.opacity&0xff) if c.color.opacity != 0
            m = /(.*?)Compliance/.match c.compliance.to_s
            colors.cur_image['Label'] = "#{c.name} (#{rgb}) #{m[1]}"
        end
    }

    puts("\tCreating montage...")

    # Montage. Each image will have 40 tiles.
    # There will be 16 images.
    montage = colors.montage {
        self.geometry = '200x25+10+5'
        self.gravity = CenterGravity
        self.tile = '4x10'
        self.background_color = 'black'
        self.border_width = 1
        self.fill = 'white'
        self.stroke = 'transparent'
    }

    # Add the title at the top, over the 'null:'
    # tiles we added at the very beginning.
    title = Draw.new
    title.annotate(montage, 0,0,0,20, 'Named Colors') {
        self.fill = 'white'
        self.stroke = 'transparent'
        self.pointsize = 32
        self.font_weight = BoldWeight
        self.gravity = NorthGravity
    }

    puts("\tWriting ./colors.miff")
    montage.each { |f| f.compression = ZipCompression }
    montage.write('colors.miff')

    # Make a small sample of the full montage to display in the HTML file.
    sample = montage[8].crop(55, 325, 495, 110)
    sample.page = Rectangle.new(495,110)
    sample.write('colors.gif')

    exit

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