Eu acho que você deveria olhar dessa maneira:
1 2 3 4 5 6 7 8 9 <--position-- physical keys
Option "ButtonMapping" "1 9 3 4 5 6 7 8 2" <--function-- logical keys
-
A posição que indica o id da chave conforme relatado pelo mouse (através do driver). Então cabe ao fabricante como encomendá-los, mas a maioria prefere a ordem comum.
Mouses ainda usam os protocolos antigos como o PS2, ele não tem como armazenar ou informar informações sobre os botões disponíveis e suas funções. Portanto, o servidor X não pode informar o ID de cada botão físico, apenas tentando-os usando uma ferramenta como
xev
que mostra os eventos X:xev -event mouse
Ou
evtest
que mostra os eventos brutos:sudo evtest
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A chave lógica é aquela realmente mapeada em algum outro lugar para funções extras. Neste nível, X olha para eles como: button1, button2, button3, button4, ..., button24 e não conhece sua função.
Exemplos de referência oficiais:
7. Configuration Examples
This section shows some example InputDevice section for popular mice.
All the examples assume that the mouse is connected to the PS/2 mouse
port, and the OS supports the PS/2 mouse initialization. It is also
assumed that /dev/mouse is a link to the PS/2 mouse port.
Logitech MouseMan+ has 4 buttons and a wheel. The following example
makes the wheel movement available as the button 5 and 6.
Section "InputDevice"
Identifier "MouseMan+"
Driver "mouse"
Option "Device" "/dev/mouse"
Option "Protocol" "MouseManPlusPS/2"
Option "Buttons" "6"
Option "ZAxisMapping" "5 6"
EndSection
You can change button number assignment using the xmodmap command
AFTER you start the X server with the above configuration. You may
not like to use the wheel as the button 2 and rather want the side
button (button 4) act like the button 2. You may also want to map the
wheel movement to the button 4 and 5. This can be done by the
following command:
xmodmap -e "pointer = 1 6 3 2 4 5"
After this command is run, the correspondence between the buttons and
button numbers will be as shown in the following table.
Physical Buttons Reported as:
------------------------------------
1 Left Button Button 1
2 Wheel Button Button 6
3 Right Button Button 3
4 Side Button Button 2
5 Wheel Negative Move Button 4
6 Wheel Positive Move Button 5
Starting in the Xorg 6.9 release, you can also achieve this in your
configuration file by adding this to the "InputDevice" section in
xorg.conf:
Option "ButtonMapping" "1 6 3 2 4 5"
For the MS IntelliMouse Explorer which as a wheel and 5 buttons, you
may have the following InputDevice section.
Section "InputDevice"
Identifier "IntelliMouse Explorer"
Driver "mouse"
Option "Device" "/dev/mouse"
Option "Protocol" "ExplorerPS/2"
Option "Buttons" "7"
Option "ZAxisMapping" "6 7"
EndSection
The IntelliMouse Explorer has 5 buttons, thus, you should give "7" to
the Buttons option if you want to map the wheel movement to buttons (6
and 7). With this configuration, the correspondence between the
buttons and button numbers will be as follows:
Physical Buttons Reported as:
------------------------------------
1 Left Button Button 1
2 Wheel Button Button 2
3 Right Button Button 3
4 Side Button 1 Button 4
5 Side Button 2 Button 5
6 Wheel Negative Move Button 6
7 Wheel Positive Move Button 7
You can change button number assignment using xmodmap AFTER you
started the X server with the above configuration.
xmodmap -e "pointer = 1 2 3 4 7 5 6"
The above command will moves the side button 2 to the button 7 and
make the wheel movement reported as the button 5 and 6. See the table
below.
Physical Buttons Reported as:
------------------------------------
1 Left Button Button 1
2 Wheel Button Button 2
3 Right Button Button 3
4 Side Button 1 Button 4
5 Side Button 2 Button 7
6 Wheel Negative Move Button 5
7 Wheel Positive Move Button 6
For the A4 Tech WinEasy mouse which has two wheels and 3 buttons, you
may have the following InputDevice section.
Section "InputDevice"
Identifier "WinEasy"
Driver "mouse"
Option "Device" "/dev/mouse"
Option "Protocol" "IMPS/2"
Option "Buttons" "7"
Option "ZAxisMapping" "4 5 6 7"
EndSection
The movement of the first wheel is mapped to the button 4 and 5. The
second wheel's movement will be reported as the buttons 6 and 7.
The Kensington Expert mouse is really a trackball. It has 4 buttons
arranged in a rectangle around the ball.
Fonte: ftp://ftp.x.org/pub/ current / doc / mouse.txt