dbus

dbus 概念

--翻遍了google和百度，就这个图对入门帮助最大，dbus的文档真难找

fcitx 概念

dbus-send  命令行

/inputmethod --对象路径

org.freedesktop.DBus.Properties --interface

--dest=org.fcitx.Fcitx    //名称

 dbus-send --session --dest=org.fcitx.Fcitx --print-reply /inputmethod  org.freedesktop.DBus.Properties.GetAll string:org.fcitx.Fcitx.InputMethod
method return time=1589505703.719201 sender=:1.4 -> destination=:1.76 serial=218 reply_serial=2
   array [
      dict entry(
         string "IMList"
         variant             array [
               struct {
                  string "键盘"
                  string "fcitx-keyboard-us"
                  string "en"
                  boolean true
               }
               struct {
                  string "拼音"
                  string "pinyin"
                  string "zh_CN"
                  boolean true
               }
               struct {
                  string "双拼"
                  string "shuangpin"
                  string "zh_CN"
                  boolean true
               }
               struct {
                  string "五笔字型"
                  string "wubi"
                  string "zh_CN"
                  boolean true
               }
               struct {
                  string "新酷音"
                  string "chewing"
                  string "zh_TW"
                  boolean true
               }
               struct {
                  string "中州韻"
                  string "rime"
                  string "zh_TW"
                  boolean true
               }
               struct {
                  string "讯飞输入法"
                  string "iflyime"
                  string "zh_CN"
                  boolean false
               }
               struct {
                  string "五笔拼音"
                  string "wbpy"
                  string "zh_CN"
                  boolean false
               }
            ]
      )
      dict entry(
         string "CurrentIM"
         variant             string "fcitx-keyboard-us"
      )
   ]

#获取当前的输入法

uos@uos-PC:~$ dbus-send --session --dest=org.fcitx.Fcitx --print-reply /inputmethod org.fcitx.Fcitx.InputMethod.GetCurrentIM
method return time=1589506396.672512 sender=:1.4 -> destination=:1.81 serial=299 reply_serial=2
string "fcitx-keyboard-us

#设置为chewin 输入法

uos@uos-PC:~$ dbus-send --session --dest=org.fcitx.Fcitx --print-reply /inputmethod org.fcitx.Fcitx.InputMethod.SetCurrentIM string:chewing
method return time=1589506465.397429 sender=:1.4 -> destination=:1.82 serial=317 reply_serial=2
uos@uos-PC:~$

#gdbus 用法

gdbus call --session --dest com.deepin.daemon.Keybinding --object-path /com/deepin/daemon/Keybinding --method com.deepin.daemon.Keybinding.ListAllShortcuts

cmd ==>  dbus-send --session --dest=org.fcitx.Fcitx --print-reply /inputmethod  org.freedesktop.DBus.Properties.GetAll string:org.fcitx.Fcitx.InputMethod

 

另一个例子

uos@uos-PC:~/tmp$ dbus-send --session --dest=com.deepin.daemon.InputDevices --print-reply /com/deepin/daemon/InputDevice/Mouse  org.freedesktop.DBus.Properties.GetAll string:com.deepin.daemon.InputDevice.Mouse
method return time=1612511729.341407 sender=:1.177 -> destination=:1.297 serial=55919 reply_serial=2
   array [
      dict entry(
         string "MotionAcceleration"
         variant             double 1
      )
      dict entry(
         string "MotionScaling"
         variant             double 10
      )
      dict entry(
         string "DoubleClick"
         variant             int32 400
      )
      dict entry(
         string "DisableTpad"
         variant             boolean false
      )
      dict entry(
         string "NaturalScroll"
         variant             boolean false
      )
      dict entry(
         string "AdaptiveAccelProfile"
         variant             boolean true
      )
      dict entry(
         string "Exist"
         variant             boolean true
      )
      dict entry(
         string "LeftHanded"
         variant             boolean true
      )
      dict entry(
         string "MiddleButtonEmulation"
         variant             boolean false
      )
      dict entry(
         string "DragThreshold"
         variant             int32 8
      )
      dict entry(
         string "MotionThreshold"
         variant             double 1
      )
      dict entry(
         string "DeviceList"
         variant             string "[{"Id":7,"Name":"VMware VMware Virtual USB Mouse","TrackPoint":false},{"Id":9,"Name":"VirtualPS/2 VMware VMMouse","TrackPoint":false}]"
      )
   ]

 设置鼠标左键

uos@uos-PC:~/tmp$ dbus-send --session --dest=com.deepin.daemon.InputDevices --print-reply /com/deepin/daemon/InputDevice/Mouse  org.freedesktop.DBus.Properties.Set string:com.deepin.daemon.InputDevice.Mouse  string:LeftHanded variant:boolean:true
method return time=1612513318.004456 sender=:1.177 -> destination=:1.311 serial=63883 reply_serial=2

python version

import dbus
bus = dbus.SystemBus()
hci0 = bus.get_object('org.bluez', '/org/bluez/hci0')
props = dbus.Interface(hci0, 'org.freedesktop.DBus.Properties')
props.Set('org.bluez.Adapter1', 'Discoverable', True)

dbus signal的处理方法

demo代码参考

https://github.com/sgh/dbus-examples

命令行

signal time=1622515858.073001 sender=:1.719 -> destination=(null destination) serial=77 path=/com/burtonini/dbus/ping; interface=com.burtonini.dbus.Signal; member=Ping
string "Ping!"

dbus-send --type=signal  /com/burtonini/dbus/ping com.burtonini.dbus.Signal.Ping string:"Ping"

dbus-monitor | grep -e EntryAdd -e EntryRemove