def create_tags(buffer)
buffer.create_tag('heading',
'weight' => Pango::FontDescription::WEIGHT_BOLD,
'size' => 15 * Pango::SCALE)
buffer.create_tag("italic",
"style" => Pango::FontDescription::STYLE_ITALIC)
buffer.create_tag("bold",
"weight" => Pango::FontDescription::WEIGHT_BOLD)
buffer.create_tag("big",
"size" => 20 * Pango::SCALE)
buffer.create_tag("xx-small",
"scale" => Pango::AttrScale::XX_SMALL)
buffer.create_tag("x-large",
"scale" => Pango::AttrScale::X_LARGE)
buffer.create_tag("monospace", "family" => "monospace")
buffer.create_tag("blue_foreground", "foreground" => "blue")
buffer.create_tag("red_background", "background" => "red")
stipple = Gdk::Pixmap.create_from_data(nil, GRAY50_BITS, GRAY50_WIDTH,
GRAY50_HEIGHT)
buffer.create_tag("background_stipple",
"background_stipple" => stipple)
buffer.create_tag("foreground_stipple",
"foreground_stipple" => stipple)
buffer.create_tag("big_gap_before_line",
"pixels_above_lines" => 30)
buffer.create_tag("big_gap_after_line",
"pixels_below_lines" => 30)
buffer.create_tag("double_spaced_line",
"pixels_inside_wrap" => 10)
buffer.create_tag("not_editable",
"editable" => false)
buffer.create_tag("word_wrap",
"wrap_mode" => Gtk::TextTag::WRAP_WORD)
buffer.create_tag("char_wrap",
"wrap_mode" => Gtk::TextTag::WRAP_CHAR)
buffer.create_tag("no_wrap",
"wrap_mode" => Gtk::TextTag::WRAP_NONE)
buffer.create_tag("center",
"justification" => Gtk::JUSTIFY_CENTER)
buffer.create_tag("right_justify",
"justification" => Gtk::JUSTIFY_RIGHT)
buffer.create_tag("wide_margins",
"left_margin" => 50,
"right_margin" => 50)
buffer.create_tag("strikethrough",
"strikethrough" => true)
buffer.create_tag("underline",
"underline" => Pango::AttrUnderline::SINGLE)
buffer.create_tag("double_underline",
"underline" => Pango::AttrUnderline::DOUBLE)
buffer.create_tag("superscript",
"rise" => 10 * Pango::SCALE,
"size" => 8 * Pango::SCALE)
buffer.create_tag("subscript",
"rise" => -10 * Pango::SCALE,
"size" => 8 * Pango::SCALE)
buffer.create_tag("rtl_quote",
"wrap_mode" => Gtk::TextTag::WRAP_WORD,
"direction" => Gtk::Widget::TEXT_DIR_RTL,
"indent" => 30,
"left_margin" => 20,
"right_margin" => 20)
end