How do I turn on fcitx on X login?

I used to have a scim.sh in /etc/profile.d/

Code:#!/bin/bash

# SCIM (Smart Common Input Method platform). This is used to support the
# entering of text in non-US-English languages.

# For SCIM to work, you need to use a UTF-8 locale. Make sure it ends on
# ".UTF-8", not "utf-8"! As an example, you would need to use en_US.UTF-8
# for a US locale (export LANG=en_US.UTF-8), not en_US.
#
# The locale (LANG variable) is set in /etc/profile.d/lang.sh.

if [ -x /usr/bin/scim ]; then
# Enable legacy X applications to use scim:
export XMODIFIERS="@im=SCIM"
# Let GTK applications like Firefox/Thunderbird use scim as
# default immodule:
export GTK_IM_MODULE="scim"
# Enable Qt/KDE applications to use scim:
export QT_IM_MODULE="scim"
# Make scim start automatically if the "magic key" Ctrl-Space is pressed:
export XIM_PROGRAM="/usr/bin/scim -d"
fi

# This ensures scim starts when you logon.
# This will only work if you login through runlevel 4 (graphical login)!!!
# Better is to have it start through Ctrl-Space like configured higher up ^^.
#if [ ! `ls /tmp/scim-socket*` ]; then
# /usr/bin/scim -d
#fiNow we have fcitx and ibus. I think I prefer fcitx. How do I turn it on in X11?