class Magick::RVG::Utility::TextAttributes

def affine
    @affine[-1]
end

def baseline_shift
    @baseline_shift[-1]
end

def baseline_shift=(value)
    @baseline_shift[-1] = value
end

def glyph_orientation_horizontal
    @glyph_orientation_horizontal[-1]
end

def glyph_orientation_horizontal=(angle)
    @glyph_orientation_horizontal[-1] = angle
end

def glyph_orientation_vertical
    @glyph_orientation_vertical[-1]
end

def glyph_orientation_vertical=(angle)
    @glyph_orientation_vertical[-1] = angle
end

def initialize
    @affine = []
    @affine << Magick::AffineMatrix.new(1, 0, 0, 1, 0, 0)
    @baseline_shift = []
    @baseline_shift << :baseline
    @glyph_orientation_horizontal = []
    @glyph_orientation_horizontal << 0
    @glyph_orientation_vertical = []
    @glyph_orientation_vertical << 90
    @letter_spacing = []
    @letter_spacing << 0
    @text_anchor = []
    @text_anchor << :start
    @word_spacing = []
    @word_spacing << 0
    @writing_mode = []
    @writing_mode << 'lr-tb'
end

def letter_spacing
    @letter_spacing[-1]
end

def letter_spacing=(value)
    @letter_spacing[-1] = value
end

def non_default?
    @baseline_shift[-1] != :baseline || @letter_spacing[-1] != 0 ||
    @word_spacing[-1] != 0 || @writing_mode[-1][/\Alr/].nil? ||
    @glyph_orientation_horizontal[-1] != 0
end

def pop
    @affine.pop
    @baseline_shift.pop
    @text_anchor.pop
    @writing_mode.pop
    @glyph_orientation_vertical.pop
    @glyph_orientation_horizontal.pop
    @letter_spacing.pop
    @word_spacing.pop
end

def push
    @affine.push(@affine.last.dup)
    @baseline_shift.push(@baseline_shift.last)
    @text_anchor.push(@text_anchor.last)
    @writing_mode.push(@writing_mode.last.dup)
    @glyph_orientation_vertical.push(@glyph_orientation_vertical.last)
    @glyph_orientation_horizontal.push(@glyph_orientation_horizontal.last)
    @letter_spacing.push(@letter_spacing.last)
    @word_spacing.push(@word_spacing.last)
end

def set_affine(sx, rx, ry, sy, tx, ty)
    @affine[-1].sx = sx
    @affine[-1].rx = rx
    @affine[-1].ry = ry
    @affine[-1].sy = sy
    @affine[-1].tx = tx
    @affine[-1].ty = ty
end

def text_anchor
    @text_anchor[-1]
end

def text_anchor=(anchor)
    @text_anchor[-1] = anchor
end

def word_spacing
    @word_spacing[-1]
end

def word_spacing=(value)
    @word_spacing[-1] = value
end

def writing_mode
    @writing_mode[-1]
end

def writing_mode=(mode)
    @writing_mode[-1] = WRITING_MODE.include?(mode) ? mode : 'lr-tb'
end