require 'rvg/rvg'

Magick::RVG.dpi = 90

TEXT_STYLES = {
  writing_mode: 'tb',
  glyph_orientation_vertical: 0,
  fill: 'red4',
  font_weight: 'bold',
  font_size: 16
}

TEXT_STYLES2 = {
  writing_mode: 'tb',
  glyph_orientation_vertical: 90,
  fill: 'green',
  font_weight: 'bold',
  font_size: 16
}

rvg = Magick::RVG.new(1.25.in, 7.in).viewbox(0, 0, 125, 700) do |canvas|
  canvas.background_fill = 'white'

  canvas.text(40, 15, ':glyph_orientation_vertical=0').styles(TEXT_STYLES)
  canvas.text(80, 25, ':glyph_orientation_vertical=90').styles(TEXT_STYLES2)

  canvas.rect(124, 698).styles(fill: 'none', stroke: 'blue')
end

rvg.draw.write('writing_mode01.gif')
