#!/home/software/ruby-1.8.5/bin/ruby -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')