How to enable dvorak layout for ibus-unikey. Put this file in /usr/share/ibus/component

unikey.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- filename: unikey.xml -->
<component>
	<name>org.freedesktop.IBus.Unikey</name>
	<description>Unikey Component</description>
	<exec>/usr/lib/ibus/ibus-engine-unikey --ibus</exec>
	<version>0.6.1</version>
	<author>Lê Quốc Tuấn &lt;mr.lequoctuan@gmail.com&gt;</author>
	<license>GPL</license>
	<homepage>http://code.google.com/p/ibus-unikey</homepage>
	<textdomain>ibus-unikey</textdomain>

	<engines>
        <engine>
            <name>Unikey</name>
            <longname>Unikey</longname>
            <description>Vietnamese Input Method Engine for IBus using Unikey Engine
Usage:
  - Choose input method, output charset, options in language bar.
  - There are 4 input methods: Telex, Vni, STelex (simple telex) and STelex2 (which same as STelex, the difference is it use w as ư).
  - And 7 output charsets: Unicode (UTF-8), TCVN3, VNI Win, VIQR, CString, NCR Decimal and NCR Hex.
  - Use &lt;Shift&gt;+&lt;Space&gt; or &lt;Shift&gt;+&lt;Shift&gt; to restore keystrokes.
  - Use &lt;Control&gt; to commit a word.</description>
            <language>vi</language>
            <license>GPLv3</license>
            <author>Lê Quốc Tuấn &lt;mr.lequoctuan@gmail.com&gt;</author>
            <icon>/usr/share/ibus-unikey/icons/ibus-unikey.png</icon>
            <layout>default</layout>
            <layout_variant></layout_variant>
            <layout_option></layout_option>
            <hotkeys></hotkeys>
            <symbol></symbol>
            <setup></setup>
            <version></version>
            <textdomain></textdomain>
            <icon_prop_key></icon_prop_key>
            <rank>99</rank>
        </engine>
</engines>


</component>