class PDF::Inspector::Text

def initialize
  @font_settings = []
  @fonts = {}
  @font_objects = {}
  @strings = []
  @character_spacing = []
  @word_spacing = []
  @kerned = []
  @text_rendering_mode = []
  @positions = []
  @horizontal_text_scaling = []
end

def move_text_position(tx, ty)
  @positions << [tx, ty]
end

def page=(page)
  @state = PDF::Reader::PageState.new(page)
  page.fonts.each do |label, stream|
    @fonts[label]        = stream[:BaseFont]
    @font_objects[label] = PDF::Reader::Font.new(page.objects, stream)
  end
end

def set_character_spacing(spacing)
  @state.set_character_spacing(spacing)
  @character_spacing << spacing
end

def set_horizontal_text_scaling(scaling)
  @state.set_horizontal_text_scaling(scaling)
  @horizontal_text_scaling << scaling
end

def set_text_font_and_size(*params)
  @state.set_text_font_and_size(*params)
  @font_settings << { name: @fonts[params[0]], size: params[1] }
end

def set_text_rendering_mode(*params)
  @state.set_text_rendering_mode(*params)
  @text_rendering_mode << params[0]
end

def set_word_spacing(*params)
  @state.set_word_spacing(*params)
  @word_spacing << params[0]
end

def show_text(*params)
  @kerned << false
  @strings << @state.current_font.to_utf8(params[0])
end

def show_text_with_positioning(*params)
  @kerned << true
  # ignore kerning information
  show_text params[0].reject { |e|
    e.is_a? Numeric
  }.join
end