解决搜狗输入法Ubuntu 14.04下黑块状态条

搜狗的Linux输入法正式版发布之时，恰好Ubuntu 14.04

LTS也刚刚发布正式版。尝试安装搜狗的Linux输入法之后，出现了一个小小的问题：输入法状态条是一个黑色块。

我的Linux桌面用的是i3平铺式桌面管理器，多显示器环境下非常好用，强烈推荐。除此之外，GUI底层用的是KDE。

做了一番功课之后，结果发现因为搜狗要支持皮肤，所以那个状态条是半透明状态的。而我目前的默认环境下不支持compositor窗口管理器，无法处理半透明窗口的效果，于是就只能显示一个黑色块。

解决办法是安装Compton，以支持窗口的半透明效果。Ubuntu默认情况下没有可用的APT源，有两种办法安装：一个是从源码编译(不赘述)，另外一个是使用一个第三方的源。

安装第三方源并安装compton

sudo apt-add-repository

ppa:richardgv/compton

sudo apt-get update && sudo apt-get install

compton

配置compton

编辑文件 ~/.compton.conf，输入如下内容

backend = "glx";

paint-on-overlay = true;

glx-no-stencil = true;

glx-no-rebind-pixmap = true;

vsync = "opengl-swc";

# These are important. The first one enables the opengl

backend. The last one

# is the vsync method. Depending on the driver you might need

to use a

# different method.

# The other options are smaller performance tweaks that work

well in most

# cases.

# You can find the rest of the options here:

# https://github.com/chjj/compton/wiki/perf-guide, and

here:

# https://github.com/chjj/compton/wiki/vsync-guide

# Shadow

shadow = false;  # Enabled

client-side shadows on windows.

no-dock-shadow = true;  # Avoid drawing shadows on dock/panel

windows.

no-dnd-shadow = true;  # Don't draw shadows on DND windows.

clear-shadow = true;  # Zero the part of the

shadow's mask behind the window (experimental).

shadow-radius = 7;  # The blur radius for shadows. (default 12)

shadow-offset-x = -7;  # The left offset for shadows. (default

-15)

shadow-offset-y = -7;  # The top offset for shadows. (default

-15)

shadow-exclude = [

"! name~=''",

"n:e:Notification",

"n:e:Plank",

"n:e:Docky",

"g:e:Synapse",

"g:e:Kupfer",

"g:e:Conky",

"n:w:*Firefox*",

"n:w:*Chrome*",

"n:w:*Chromium*",

"class_g ?=

'Notify-osd'",

"class_g ?=

'Cairo-dock'",

"class_g ?=

'Xfce4-notifyd'",

"class_g ?=

'Xfce4-power-manager'"

];

# The shadow exclude options are helpful if you have shadows

enabled. Due to

# the way compton draws its shadows, certain applications will

have visual

# glitches

# (most applications are fine, only apps that do weird things

with xshapes or

# argb are affected).

# This list includes all the affected apps I found in my

testing. The "!

# name~=''" part excludes shadows on any "Unknown" windows,

this prevents a

# visual glitch with the XFWM alt tab switcher.

# Fading

fading = true; # Fade windows during opacity changes.

fade-delta = 4; # The time between steps in a fade in

milliseconds. (default 10).

fade-in-step = 0.03; # Opacity change between steps while

fading in. (default 0.028).

fade-out-step = 0.03; # Opacity change between steps while

fading out. (default 0.03).

#no-fading-openclose = true; # Fade windows in/out when

opening/closing

detect-client-opacity = true; # This prevents opacity being

ignored for some apps. For example without this enabled my

xfce4-notifyd is 100% opacity no matter what.

# Window type settings

wintypes:

{

tooltip = { fade = true; shadow = false;

};

};

重点是其中 shadow 一项的值设置为 false 。

自启动

最后，修改i3配置文件 ~/.i3/config，在最后加入下面的代码，实现自动启动compton和搜狗输入法

# auto start commands

exec --no-startup-id fcitx -r

exec --no-startup-id fcitx-qimpanel

exec --no-startup-id compton -b

安装完成了，系统也顺便带了半透明和淡入淡出效果。