IMWheel
Section: User Commands (1)
Updated: September 8 2002
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NAME
imwheel - a mouse wheel and stick interpreter for X Windows
SYNOPSIS
imwheel [ options ]
DESCRIPTION
IMWheel is a universal mouse wheel and mouse stick translator for the X
Windows System. Using either a special version of gpm and it's /dev/gpmwheel
FIFO, or the support for a ZAxis on the mouse built into some servers, such as
XFree86. Utilizing the input from gpm or X Windows, imwheel translates mouse
wheel and mouse stick actions into keyboard events using the XTest extension to
X. Use xdpyinfo for information on the supported extensions in your X
server.
COMMAND LINE OPTIONS
Available command line options are as follows:
- -4, --flip-buttons
-
Flips the mouse buttons so that 4 is 5 and 5 is 4, reversing
the Up and Down actions. This would make 4 buttons somewhat useful!
This is the similar to using "-b 54678", see the -b option.
See also xmodmap(1).
- -b, --buttons button-spec
-
Remap buttons in button-spec to interpreted wheel/thumb input.
Also limits the button grab to the specified buttons when using the ZAxis method.
(see "X WINDOWS ZAXIS METHOD" below)
the button-spec may specify any of up to five buttons.
the button-spec is decoded in the following order for wheel input:
-
-
Index Interpreted As Button Number
1 Wheel Up 4
2 Wheel Down 5
3 Wheel Left 6
4 Wheel Right 7
5 Thumb Button 1 8
6 Thumb Button 2 9
A button-spec of "45" will limit the grabbed buttons for only wheel up and down.
A button-spec of "67" may be useful to use actual buttons 6 and 7 as wheel up
and down, and limit the grab to only those two buttons.
A button-spec of "0" turns off any defined mapping, thus allowing for skips in
the button-spec for something that doesn't exist on your mouse.
A button-spec of "45006" may be for normal wheel up/down and a thumb button 1, but
no horizontal wheel axis.
The default button-spec is "456789".
See also xmodmap(1).
- -c, --config
-
Popup to configuration helper window imediately.
See also CONFIGURATION HELPER
- -D, --debug
-
Show all possible debug info while running. This spits out alot and I also
suggest using the -d option to prevent imwheel from detaching from the
controlling terminal.
- -d, --detach
-
Actually this does the opposite of it's name, it prevents detachment from the
controlling terminal. (no daemon...) Control-C stops, etc...
- -f, --focus
-
Forces the X event subwindow to be used instead of the original hack that would
replace the subwindow in the X event with a probed focus query (XGetInputFocus).
This should fix some compatability problems with some window managers, such as
window maker, and perhaps enlightenment. If nothing seems to be working right,
try toggling this on or off...
- -g, --focus-events
-
Disable the use of focus events for button grabs. If your @Excluded windows
are not regrabbing the mouse buttons when exited, try toggling this on or off...
- -h, --help
-
Short help on options plus version/author info.
- -k, --kill
-
Attempts to kill old imwheel (useful only for --wheel-fifo method.)
Pidfile must be created for this to work (no -p or --pid option on
the previous imwheel invocation). Process IDs are
tested using /proc/${pid}/status Name: field ?= imwheel.
If /proc is not mounted then this fails everytime!
Otherwise, this ensures that the wrong process is not killed.
- -p, --pid
-
Don't write a pid file for gpmwheel FIFO method. This is the only
method that uses the pid file. XGrab doesn't need it, so it just
issues a warning about starting multiple imwheels on the same
display. Some people really prefer this, especially when they are
not using a SUID root imwheel executable.
- -q, --quit
-
Quit imwheel before entering event loop. Usful in killing an
imwheel running in gpmwheel FIFO mode after exiting XWindows,
if you're using pid files that is.
Example: `imwheel -k -q' = kill and quit (option order doesn't matter)
- -s, --sensitivity sum-min
-
(Stick mice, Wheel FIFO method only)
like -t only this sets a minimum total amount of movment of the
stick or marble, before any action is taken. This works good
with the Marble type devices.
This should be a multiple of the threshhold as given by the -t option.
The default is 0, meaning that there is no sensitivity testing,
all input spawns an event.
See the -t option also.
(see "STICK SENSITIVITY SETTINGS" below)
- -t, --threshhold minimum-pressure
-
Used with gpm only and then only with recognized stick mice.
stick mice send a pressure value ranging from 0(no pressure) to
7(hard push). This sets the minimum required pressure for
input to be registered. Setting it to zero will cause realtime sticking,
which is usually too much action for X to keep up. (max rate i saw was
100 events a second!). Once input is registered, it is summed up per axis,
and then it must equal or exceed the sensitivity setting to pass as an input.
See the -s option also, for sensitivity.
The default is 2, to avoid slight presses on the 90-degree direction of the
intended while still getting to the intended direction. Setting this to 7 is
insane, because it requires the user to push as hard as possible everytime they
want something to happen! However it may not be so insane for people using
trackballs for input, as they may spin much faster per sample...
(see "STICK SENSITIVITY SETTINGS" below)
- -W, --wheel-fifo fifo
-
Use the gpm/jamd wheel fifo instead of XGrabMouse. See GPM/JAMD WHEEL FIFO METHOD
section. This method allows only one X display to be used. This is required
for the gpm method to work. This method only works with the imwheel version
of gpm and with jamd. To find out if you are running the imwheel version of gpm
use the following command and look for "(imwheel)" in the title:
-
-
gpm -v
fifo names the named pipe (FIFO) created by gpm. It defaults to
"/dev/gpmwheel" (for --wheel-fifo only). The FIFO must exist before
running imwheel in this mode. using jamd requires you to name the correct fifo
because it doesn't use /dev/gpmwheel, but rather one of the /dev/jam_imwheel:0.0
named fifos created by jamd's imwheel module.
@Exclude commands in the rc file are unused in this mode.
- -X, --display display
-
Use XServer at a specified display in standard X form.
Using this option is usful for multiple displays in the X Window ZAxis Method.
- -x, --transpose
-
This swaps the X and Y axis of movement for stick input from a wheel-fifo.
X WINDOWS ZAXIS METHOD
This method is the only method that works with multiple X displays, using
multiple imwheels. Use multiple imwheels by either setting the DISPLAY
environment variable before running each imwheel, or use the -X or
--display options to specify a different display for each imwheel.
Running multiple imwheels on the same display is not recommended, but is
allowed, and may cause strange things to happen while using the stick or wheel.
Edit the XF86Config and add/edit the following lines in the
"Pointer"(XFree86 3.3) or
"InputDevice"(XFree86 4.x)
section:
1 axis (vertical wheel):
-
(XFree86 3.3)
- Buttons 5
ZAxisMapping 4 5
(XFree86 4.x)
- Option "Buttons" "5"
Option "ZAxisMapping" "4 5"
2 axis (1 stick or 2 perpendicular wheels):
-
(XFree86 3.3)
- Buttons 7
ZAxisMapping 4 5 6 7
(XFree86 4.x)
- Option "Buttons" "7"
Option "ZAxisMapping" "4 5 6 7"
The Buttons option may be greater than stated above if you have thumb
buttons, or other extras that qualify as buttons.
Make sure your Protocol is set to either "IMPS/2" for a PS/2 mouse
or for serial mice set it to "IntelliMouse" or "Auto".
This is for IntelliMouse compatible mice, other protocols may be required for other mice.
Then while running X Windows run imwheel without the --wheel-fifo
or -W options.
NOTE
The @Exclude command must be used for clients that either use the ZAxis
for themselves and have no keyboard translations to cause the same desired
effect. The @Exclude command must also be added for any client requiring
mouse and/or mouse button grabs and that don't specify specific buttons to
grab. These clients fail when they try to grab the mouse because the buttons 4
and 5 are already grabbed by imwheel. XV is an example of a client that
requires these types of grabs to succeed. KDE clients use the ZAxis for their
own purposes. The supplied imwheelrc included and exclusion for XV already.
See the IMWheelRC section for more information.
Also pid files are not used for this method. Thus the -p and --pid
options have no effect, and are ignored.
GPM/JAMD WHEEL FIFO METHOD
This method is REQUIRED for any X Windows server without wheel
mouse support built in. This method will currently support mice as supported
through gpm or jamd.
In the Pointer section of your XF86Config (or the equivalent configuration file
for your X server) change your mouse Protocol to be "MouseSystems"
(or the equivelant...), also change the Device file that the mouse is read from
to "/dev/gpmdata", then restart X Windows if it is running.
jamd will replicate to /dev/jam_ps2:0.0 or some other devices as well,
make sure to use the right X Mouse protocol in this case,
like the jamd_ps2 device is X mouse protocol PS/2,
and the jamd_imps2 device is X mouse protocol IMPS/2.
Before starting X Windows (re)start gpm with the -W option. Make sure
you are using a supported wheel or stick mouse as stated in the gpm man page.
After starting X Windows run imwheel as follows adding options as desired:
for gpm you can use the following option to imwheel
--wheel-fifo
jamd requires you specify the fifo name as one of the /dev/jamd_imwheel:0.0
named fifos. Run
ls -al /dev/jam_imwheel*
to see what is available.
In this example I would use
-W /dev/jam_imwheel:0.0
as the option to imwheel.
I usually add the -k option to kill off any old imwheel processes left
over, as imwheel doesn't exit with the server, but rather it will only die if a
wheel or stick action occurs when an X server is not connected, such as when X
is dead or the DISPLAY environment variable is setup wrong, or the -X or
--display variables connected imwheel to a now defunct X server.
gpm or jamd, and/or imwheel can be restarted at any time, imwheel can sense when
gpm of jamd is not there, and gpm nor jamd doesn't give a hoot about imwheel
being up or not.
NOTE
The @Exclude command has no bearing in this method, it is ignored. No Focus
change events are received in this method. Thus KDE and other clients that
support X based wheel events through the ZAxis are not going to work except
through normal imwheel keypress translation of wheel and stick actions.
XV will function fine, as will any client that grabs the mouse and/or mouse
buttons. This mode doesn't use any grabs to function.
STICK SENSITIVITY SETTINGS
The -s and -t options specify a sensitivity and threshhold.
each movement of a stick, or trackball, must equal or exceed the threshhold to
be added to the respective axis sum. In other words if you puch the stick up
hard enough to exceed the threshhold then the Y axis sum would be increased by
however much you pressed up.
Next the summed X and Y axis movement is each compared to the sensitivity setting.
If the sensitivity setting is equalled or exceeded, then one imwheel event is spawned,
thus after pressing up for a bit, the Y sum exceeds the sensitivity and a wheel up
event is interpreted by imwheel into an action such as a PageUp key.
The sensitivity therefore must be greater than the threshhold for it to have any
bearing on the input. Pseudo code such as the following may explain:
-
if(input >= threshhold)
- sum = sum + input
if(sum >= sensitivity) {
- do an imwheel action
sum = 0
}
IMWHEELRC
IMWheel uses, optionally, two configuration files. One called /etc/X11/imwheelrc,
which is used for everybody. The other is $HOME/.imwheelrc, used only for one
user. One is supplied and should have been installed automatically in /etc
if not also in the installing users $HOME as well. All whitespace is ignored
in the files except for within the window names' double quotes.
The configuration file consists of window names and event translations and/or
imwheel commands that begin with an `@' (at) symbol. Each window name starts a
section that is it's configuration. The window names a priortized as first
come first served, so more generic matches should always occur later in the
configuration file.
Comments are started with a pound (#) and extend to the end of the line.
IMWHEELRC WINDOW SECTION HEADERS
Window name section headers are actually one of four things:
Window Title
Window Class Name
Window Resource Name
(null) which matches "\(null\)" in the imwheelrc
Most of these are probe-able using fvwm2's FvwmIdent module or the configurator
(see the CONFIGURATION HELPER section). Other window managers may have their
own method of identifying windows' attributes.
Each window name is matched as a regex string. Thus any window is matched using
the regex pattern ".*" as a window name. This pattern should be the last
section in your configuration file, or it will override the other window
configurations in the file for matched wheel/stick actions.
There is one special header noted as "(null)" which matches windows that have a
null string in the three attributes. This makes it possible to assign actions
to even Quake3, which has no info for it's window. Just make sure that you
realize that the keys used should not be keys that may conflict with other
key actions in the game or application you are aiming to make work!
The included imwheelrc file has a "(null)" section included to demonstrate, and
it should work with Quake3.
Each window/class/resource name must be enclosed in double quotes (") on a line by
itself.
Inside each window section is any number of translation definitions or commands.
Each translation definition or command must be on a line by itself. The window section doesn't have to be terminated, as it is terminated by either starting
another window section or the end of the configuration file.
IMWHEELRC TRANSLATION DEFINITIONS
Mouse wheel/stick translations each take up a line after a window section has
been started. Each argument is seperated by commas(,) whitespace is ignored.
KeySyms are used to specify the keyboard input and outputs. pipes (|) are used
to join multiple keys into one input/output.
The format is as follows:
REQUIRED
The following arguments a required to make a minimum translation definition.
- Key Modifiers Input
-
X KeySyms joined by pipes that indicate the required keys pressed when the
mouse action is made in order for this translation to be used. Alt, Meta,
Control, and Shift keys are typical modifiers, but are stated slightly different
than just `Shift' but rather `Shift_L' or `Shift_R', differentiating between
left and right shift keys. See the KeySyms section for more.
`None' is a special KeySym used by imwheel, it is used to indicate no
modifiers. A blank entry is also acceptable in this case, but less descriptive
of what is going on! If `None' is used then there can be no modifiers
in use during the wheel action. If the field is blank then any modifier
will match, so put these last in their window section.
- Mouse Action Input
-
This is the input from the mouse wheel or stick. It is one of the following and
only one:
Up
Down
Left
Right
Thumb
These are self explanatory. If you have trouble use the configurator!
- Key Action Output
-
Out KeySyms are placed here. See KeySyms section for more on all available
KeySyms. Join KeySyms using pipes. Output keys are pressed in order and
released, in reverse order, only after all have been pressed, likely making
them all combined as in `Control_L|C' which would be a `^C' (control-c)
keypress.
OPTIONAL
The following options are optional, but to use one you must fill in all the
preceding arguments.
- Output Repetitions
-
How many times should the Output KeySyms be pressed in a row.
Default is 1.
- Delay Before KeyUp Event
-
How long in microseconds until we release all the Output KeySyms in one Output
Repetition.
Default is 0.
- Delay Before Next KeyPress Event
-
How long in microseconds until we press the next the Output KeySyms.
Ths delay occurs after the Output KeySyms are released.
Default is 0.
IMWHEELRC COMMANDS
Commands start with the `@' character. Commands are as follows:
- @Exclude
-
Exclude this window from imwheel grabing mouse events. imwheel will ungrab
the mouse when these windows are entered and not regrab the mouse until focus
is changed to a non-excluded window. This allows the ZAxis button events to
pass through normally and mouse grabs to succeed.
XV and KDE clients need this for the X Windows Method.
This command has no effect in the GPM Method. The mouse isn't grabbed, nor are
ZAxis button events created by the server.
- @Repeat
-
Repeat the mouse button to the window. This cause a mouse button to be generated
in the current window. It does not use XSendEvent so the mouse button presses
are indistiguishable from the real thing. This mode is not compatible with the
XGrabButtons method of imwheel, otherwise listed as the ZAxis Method in this manpage.
Motions are mapped as follows:
-
-
Up is button 4
Down is button 5
Left is button 6
Right is button 7
Thumb1 is button 8
Thumb2 is button 9
- @Priority=priority
-
Using this is allowed in each window/class/resource section.
Higher priority values take precedence over lower ones.
Equal priorities on sections make the imwheelrc file parsed from top to bottom
to find the first match.
Thus @Priority can be used to make the file search for matches out of order,
then you dont have to keep the entries in order if you so please.
the supplied imwheelrc file contains extensive comments and examples of the
@Priority function.
The default priority for any new section is 0.
The last @Priority command in a section overrides all previous priorities
for that section. Thus each section has only one priority setting in the end.
Priorities are kept as an int, thus range from INT_MAX to INT_MIN.
(see /usr/include/limits.h for these values on your system)
CONFIGURATION HELPER
IMWheel contains a semi-hidden configuration helper which can be brought up
by rolling/sticking up and down a few times in the root window of the X server.
Inside this window you can find out possible window names to use in your
imwheelrc file. Press on the mini-screen capture to grab another window,
including the root window (whole screen).
Mouse wheel and stick actions can be grabbed along with
active modifier keys on the keyboard. The mouse wheel/stick action is displayed
and the X KeySyms are displayed beneath it. All this information can be
directly entered into an imwheelrc as desired.
IMWheel can be restarted to read in a changed imwheelrc file or the
configurator can be canceled causing imwheel to resume oprations without
reading the configuration file. To restart imwheel execs itself as called by
the user in the first place but adding the -R option to indicate to
itself that this is a restarted imwheel. The -R is not for use by the
user, as it bypasses some configuration of imwheel.
KEYSYMS
The program expects combinations of keysyms to be used by using pipe(|)
characters to combine them together.
Example:
-
Alt_R|Shift_R
Means right alt and right shift together, not just either one or the
other! And not one after the other, they are both pressed at the same time
essentially.
For FIFO users, it is possible to send a real mouse button event, using
the special Button# syntax. An imwheelrc keysym of Button1 would
send a real Mouse button 1 (left mouse button) event. Mouse4 is what you'd want
for a MouseWheelUp type event. Mouse5 is what you want to MouseWheelDown event.
Many applications will understand the meaning of mouse button 4 and 5, but most don't
go beyond that. So Mouse6 and greater have no "standardized" meaning. The Button# syntax
can be combined with regular keysyms, to send keys and mouse buttons at the same time.
Example:
-
Shift_L|Button4
- meaning left shift and wheel up.
Button5
- meaning wheel down.
Other button to imwheel meaniful references:
-
KeySym IMWheel Input Real Mouse
------ ------------- ----------
Button1 (none) Left Mouse Button
Button2 (none) Middle Mouse Button
Button3 (none) Right Mouse Button
Button4 Up Mouse Wheel Up
Button5 Down Mouse Wheel Down
Button6 Left Mouse Wheel Left
Button7 Right Mouse Wheel Right
Button8 Thumb1 Side Mouse Button 1 (left/up)
Button9 Thumb2 Side Mouse Button 2 (right/down)
Common Modifier Keysym names used in X:
Shift_L Shift_R
Control_L Control_R
Alt_L Alt_R
These are probably not currently assigned any keys, unless you xmodmap them in:
Meta_L Meta_R (Actually, Sun keyboards have this...)
Super_L Super_R
Hyper_L Hyper_R
And here's some that you may use, and they are somewhere on your keyboard:Here's where they were on my keyboard, again, this is not universal.
Use the xev program to test your own keys on your keyboard!
Caps_Lock = The Caps Lock key!
(This still turns on and off caps lock!)
Num_Lock = The Num Lock key!
(This is not good to use...
for the same reasons as Caps_Lock)
Multi_key = The Scroll Lock key!
(Go figure!)
Mode_switch = Right Alt...for me anyways.
(This mean I cannot use Alt_R)
The windows keys may not be assigned any KeySyms, but they will have numbers.
xmodmap can be used to assign them to a real KeySym.
To find keysym names for any keys available see the
/usr/include/X11/keysymdef.h file, and for any define in that file
remove the "XK_" for the usable KeySym name in the configuration file.
The path to this file may differ for you.
Remember, there's always the configurator.
And xev will also help here too!
WHEEL OR STICK AS MIDDLE BUTTON IN X
Configure the XF86Config without "Emulate3Buttons" and increase "Buttons" if it is 2
in the Ponter or InputDevice section. The wheel or stick will act as a real
middle button and the outer two buttons will act as separate buttons (1 and 3),
even when pressed together.
Of course if your wheel keeps clicking middle button while you're trying to use the
wheel you may want to activate the Emulate3Buttons option to disable the wheel button!
And donn't forget to reduce the Buttons argument to 2!
LEFTY BUTTON MAPPING IN X WINDOWS
For those of you lefties out there using method #1, the non-gpm method this
command may help you get the buttons set up correctly in XWindows for both
left handed and imwheel use.
-
xmodmap -e "pointer = 3 2 1 4 5"
or
xmodmap -e "pointer = 3 2 1 4 5 6 7"
etc...
xmodmap -e "pointer = 3 2 1 4 5 6 7 8 9"
NOTE: most of these are NOT going to work, because of all the limits in X.
add more numbers to the end of this line if you have more buttons!
BUGS
Of course...but most of the time it's just that you haven't read everything I've written here and in the files of the distribution itself. Even then, you may be giving up too easily. Keep trying, it's not that hard. I am always working on reducing strange behavior. This is still a beta, as indicated by the leading 0 in the version number.
Real Bugs
imwheel doesn't get along with itself on the same X display or using the same
gpmwheel FIFO. - This will always be your fault :-/
Stick mice are still a pain in the butt to use. - This is the manufacturer's fault.
Or X Windows fault, for not having a method to easily use such devices in all applications.
Keyboard focus isn't changed automatically to input keys into Window mouse is
over. This only occurs with Click-to-Focus type focus managment in window managers.
I use sloppy focus in fvwm2, which always works for me. - Whose fault is this?
(Switch focus modes and/or window managers, or try the -f option on imwheel)
Configuration file is not validated for correctness nicely...although it does
get preparsed before the main program starts, thus stopping you before you run
with an invalid configuration file. I just have never made a bad configuration
file, so I guess I'll have to try and do that to see what happens. Just don't
make any mistakes and you'll be fine. - This is my fault?! ;)
HOMEPAGE
http://jonatkins.org/imwheel
AUTHOR
Jonathan Atkins <jcatki@jonatkins.org>
FILES
$HOME/.imwheelrc
The users configuration file.
/etc/X11/imwheelrc
The global location for the configuration
file, it is always loaded. Overided by
the users configuration file.
/dev/gpmwheel
The default wheel FIFO from gpm, if used.
/dev/jam_imwheel:0.0 (or other numbers...)
A wheel FIFO from jamd, if used, must be specified.
jamd allows more than on FIFO, and thus allows more than
one instance of imwheel to be running on the same computer
when running imwheel on multiple displays
using the Wheel FIFO method.
/tmp/imwheel.pid
The public area for imwheel's pid file.
/var/run/imwheel.pid
The private area for imwheel's pid file.
SEE ALSO
jamd(1)
Jon Atkins Mouse - a replacement/augmentation for/to gpm.
xwheel(1x)
The new replacement for imwheel. Uses jamd instead of gpm or ZAxis.
(may not be available yet)
xdpyinfo(1x)
X Display information, including extensions.
gpm(8)
General Purpose Mouse, imwheel edition required.
FvwmIdent(1x)
FVWM2's Identify module, for probing windows.
regex(7)
POSIX 1003.2 Regular Expressions.
xmodmap(1x)
Utility for modifying keymap & button mappings in X.
xev(1x)
Print contents of X events.
/usr/include/X11/keysymdef.h
X11 KeySym definitions.
/usr/include/limits.h
INT_MIN and INT_MAX definitions.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- COMMAND LINE OPTIONS
-
- X WINDOWS ZAXIS METHOD
-
- GPM/JAMD WHEEL FIFO METHOD
-
- STICK SENSITIVITY SETTINGS
-
- IMWHEELRC
-
- IMWHEELRC WINDOW SECTION HEADERS
-
- IMWHEELRC TRANSLATION DEFINITIONS
-
- IMWHEELRC COMMANDS
-
- CONFIGURATION HELPER
-
- KEYSYMS
-
- WHEEL OR STICK AS MIDDLE BUTTON IN X
-
- LEFTY BUTTON MAPPING IN X WINDOWS
-
- BUGS
-
- HOMEPAGE
-
- AUTHOR
-
- FILES
-
- SEE ALSO
-