Apple Magic Mouse 多点触控在 Linux 里的安装与配置

Felix 弄来一只 Apple Magic Mouse 小白, 蓝牙配对上后发现各种scrolling很靠谱, 三键也支持好了, 但是多指动作没有支持…
在各种Google之后, 找到了有人使用 PyMT 来实现 Magic Mouse 多点触控手势的脚本, 由于原脚本(参考资料1)是针对GNOME/compiz的, 而且网上没有靠谱的KDE可用版本, 于是本猫自己Hack了一下…

安装说明:
首先要安装pymt, ArchLinux用户可以直接

yaourt -S pymt

Ubuntu用户可以直接

sudo apt-get install python-pymt

接下来, 配置pymt识别MagicMouse的多点触控:
编辑 ~/.pymt/config
找到 [input] 段, 修改为:

[input]
default = hidinput,/dev/input/event

上面的<n>需要替换成MagicMouse对应的编号, 可以用下面这个本猫写的挫挫的语句察看:

cat /var/log/Xorg.0.log|grep udev|grep -i apple|grep /dev/input/event

然后, 给这个文件(设备?信号?事件? = =不知道怎么称呼了)加上读属性, 以使得pymt可以用当前用户身份读取:

sudo chmod a+r `cat /var/log/Xorg.0.log|grep udev|grep -i apple|grep /dev/input/event|sed -e 's/.*\(\/dev\/input[^\)]*\).*/\1/'`

至此, 可以认为pymt安装好啦!
测试:

python -m pymt.tools.demo

(arch用户自行改为python2 = =)

接下来…可以试试我的脚本啦!

— Changelog:
2011/4/19 – 第二个版本, 增加了三指上下调节系统音量的功能~~
2011/4/19 – 第一个版本, 仅简单实现了双指Swipe Left/Right 切换虚拟桌面的效果.

#!/usr/bin/env python2
from pymt import *
import sys, dbus, subprocess, os
import time

class Tracer(MTWidget):
    SWIPE_X_THRESHOLD = 120
    SWIPE_Y_THRESHOLD = 50
    LEFT_SWIPE, RIGHT_SWIPE = range(2)

    block = False

    def run_cmd(self, cmd):
        return subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True).communicate()[0]
                                       
    def dbus_message(self, action):
        try:
            rootwin = subprocess.Popen(['xwininfo', '-root'],
                                       stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()[0]
        except OSError:
            raise SystemExit('Error: xwininfo not present')

        try:
            rootwin_id = int(rootwin.split()[3], 0)
        except IndexError:
            raise SystemExit('Error: unexpectedly short output from xwininfo')
        except ValueError:
            raise SystemExit('Error: unable to convert "%s" to int', rootwin.split()[3])

        session_bus = dbus.SessionBus()

        args = ['root', rootwin_id]
        kwin = session_bus.get_object('org.kde.kwin', '/KWin')
        exec('kwin.' + action + '()')
        
    def on_touch_move(self, touch):
        #if touch.y < 150:
        #    return
        #if touch.x < 100 or touch.x > 600:
        #    return
        if self.block:
            return

        if len(getCurrentTouches()) == 3:
            if (touch.y - touch.oypos) < -self.SWIPE_Y_THRESHOLD:
                self.block = True
                currentvolumn = int(self.run_cmd(r'amixer -c 0 get Master|grep -i left|grep %|sed -e "s/.*\[\([0-9]*\)%\].*/\1/"'))
                self.run_cmd('amixer -c 0 sset Master,0 %d' % (currentvolumn - 5, ) + '%')
                return
            if (touch.y - touch.oypos) > self.SWIPE_Y_THRESHOLD:
                self.block = True
                currentvolumn = int(self.run_cmd(r'amixer -c 0 get Master|grep -i left|grep %|sed -e "s/.*\[\([0-9]*\)%\].*/\1/"'))
                self.run_cmd('amixer -c 0 sset Master,0 %d' % (currentvolumn + 5, ) + '%')
                return

        if len(getCurrentTouches()) == 2:
            if (touch.x - touch.oxpos) > self.SWIPE_X_THRESHOLD:
                self.block = True
                self.dbus_message("previousDesktop")
                return
            elif (touch.x - touch.oxpos) < -self.SWIPE_X_THRESHOLD:
                self.block = True
                self.dbus_message("nextDesktop")
                return
                
    def on_touch_up(self, touch):
        self.block = False

runTouchApp(Tracer())

很简单哟~快来自定义属于自己的快捷键吧^_^

参考资料:
1, https://gist.github.com/546779
2, http://ubuntuforums.org/archive/index.php/t-1386790.html
3, http://pymt.eu/wiki/DevGuide/InstallPymtUbuntu
4, http://pymt.eu/wiki/DevGuide/InputConfiguration
5, http://pymt.eu/wiki/DevGuide/ConfigurationFile