# get_multiline_type_metrics.rb

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

    include Magick

    TEXT = 'get\nmultiline\ntype\nmetrics'

    background = Image.new(200, 200)
    gc = Draw.new

    # Draw the text centered on the background
    gc.annotate(background, 0, 0, 0, 0, TEXT) do |gc|
        gc.font_family = 'Verdana'
        gc.pointsize = 36
        gc.gravity = CenterGravity
        gc.stroke = 'none'
    end

    begin

        # Get the metrics
        metrics = gc.get_multiline_type_metrics(background, TEXT)

        # Compute the corners for a rectangle surrounding the text
        x = (background.columns - metrics.width) / 2
        y = (background.rows - metrics.height) / 2

        # Draw 2 rectangles over the text.
        gc = Draw.new
        gc.stroke('red')
        gc.stroke_width(5)
        gc.stroke_linejoin('round')
        gc.fill('cyan')
        gc.fill_opacity(0.10)
        gc.rectangle(x, y, x+metrics.width, y+metrics.height)

        gc.stroke('white')
        gc.stroke_width(1)
        gc.fill('none')
        gc.rectangle(x, y, x+metrics.width, y+metrics.height)
        gc.draw(background)

        background.border!(1,1, 'blue')

    # Substitute the standard "Not Implemented" image
    rescue NotImplementedError
        not_implemented = Magick::Image.read("images/notimplemented.gif").first
        not_implemented.resize!(background.columns, background.rows)
        background = not_implemented
    end

    background.write('get_multiline_type_metrics.gif')

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