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Zebbeman
n00b
Joined: 14 Jun 2003
Posts: 56
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 Posted: Fri Nov 06, 2009 10:23 pm Post subject: [solved] Trademark™ character with key combination |
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Hi,
I want to use a key combination to get the Trademark™ sign. I am using Openbox, so I tried to find a way to bind ctrl+t to the ™ code (U+2122, 0xE2 or equivalent) in rc.xml but I did not understand how to do that. Does anyone know how to make ctrl+t printing a ™ sign? It does not have to be in rc.xml, any suggestion is welcome.
Last edited by Zebbeman on Tue Nov 17, 2009 5:22 pm; edited 1 time in total |
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Chris W
l33t
Joined: 25 Jun 2002
Posts: 960
Location: Brisbane, Australia
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| Posted: Sat Nov 07, 2009 7:42 am Post subject: |
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You could use the Compose key mechanism in X. | Code: |
$ xmodmap -e "keysym Menu = Multi_key"
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Sets the Menu key (assuming a Windows keyboard) as the Compose or Multi-key. Then pressing and releasing the keys one at a time: generates the ™ code at least on my machine. As a bonus, typing accented Latin characters is also done this way: | Code: |
Menu ' a
Menu ` a
Menu ~ e |
áàẽ ...
You might already have something mapped to Compose key have a look at: | Code: |
$ xmodmap -pk | grep Multi_key
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You should be able to make the change permanent with a ~/.Xmodmap file containing just the "keysym Menu = Multi_key" string or by putting the full command in another startup file (.xinitrc or the like).
Another approach is to use a key as "Mode_switch" and a free modifier: | Code: |
$ xmodmap
xmodmap: up to 4 keys per modifier, (keycodes in parentheses):
shift Shift_L (0x32), Shift_R (0x3e)
lock Caps_Lock (0x42)
control Control_L (0x25), Control_R (0x69)
mod1 Alt_L (0x40), Alt_R (0x6c), Meta_L (0xcd)
mod2 Num_Lock (0x4d)
mod3
mod4 Super_L (0x85), Super_R (0x86), Super_L (0xce), Hyper_L (0xcf)
mod5 ISO_Level3_Shift (0x5c), Mode_switch (0xcb)
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mod 3 is free, and I'll use my right Windows key (keycode 134, found using xev): | Code: |
$ xmodmap -e 'keycode 134 = Mode_switch'
$ xmodmap -e 'clear mod3'
$ xmodmap -e 'add mod3 = Mode_switch'
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then: | Code: |
$ xmodmap -e 'keycode 28 = t T trademark trademark'
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Pressing Mode_Switch+t (together) should get you the ™ symbol.
_________________
Cheers,
Chris W
"Common sense: The collection of prejudices acquired by age 18." -- Einstein |
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Zebbeman
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Joined: 14 Jun 2003
Posts: 56
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| Posted: Sat Nov 07, 2009 11:04 am Post subject: |
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Thanks! Works perfect!
Is there any way to add this to Alt Gr + t? I tried, of course, replacing 134 with 108 but all my other ©® and such disappeared  |
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Chris W
l33t
Joined: 25 Jun 2002
Posts: 960
Location: Brisbane, Australia
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| Posted: Sat Nov 07, 2009 10:30 pm Post subject: |
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I assume that AltGr+c and AltGr+r currently give you the copyright and registered symbols before the tweaks above. You'd have to look at your xmodmap output (before tweaks) to see the mappings for the C, R, T and Alt keys: | Code: |
$ xmodmap
xmodmap: up to 4 keys per modifier, (keycodes in parentheses):
shift Shift_L (0x32), Shift_R (0x3e)
lock Caps_Lock (0x42)
control Control_L (0x25), Control_R (0x69)
mod1 Alt_L (0x40), Alt_R (0x6c), Meta_L (0xcd)
mod2 Num_Lock (0x4d)
mod3
mod4 Super_L (0x85), Mode_switch (0x86), Super_L (0xce), Hyper_L (0xcf)
mod5 ISO_Level3_Shift (0x5c), Mode_switch (0xcb)
$ xmodmap -pke | egrep '[crt] [CRT]|108'
keycode 27 = r R r R r R
keycode 28 = t T t T t T
keycode 54 = c C c C c C
keycode 108 = Alt_R Meta_R Alt_R Meta_R Alt_R Meta_R
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I'd guess that AltGR (may be an alias for Alt_R) is already mapped as the Mode_switch key and to mod1, 2, 3, or 4 (not 5), and that your mappings look something like: | Code: |
keycode 27 = r R registered registered r R
keycode 28 = t T t T t T
keycode 54 = c C copyright copyright c C
keycode 108 = Mode_switch
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in which case a simple: | Code: |
xmodmap -e 'keycode 28 = t T trademark trademark t T'
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should see you good.
For my locale the symbols that the Multi_key compose approach can build is in /usr/share/X11/locale/en_US.UTF-8/Compose. The copyright and registered symbols are | Code: |
<Multi_key> <o> <c> : "©" copyright # COPYRIGHT SIGN
<Multi_key> <o> <C> : "©" copyright # COPYRIGHT SIGN
<Multi_key> <O> <c> : "©" copyright # COPYRIGHT SIGN
<Multi_key> <O> <C> : "©" copyright # COPYRIGHT SIGN
<Multi_key> <o> <r> : "®" registered # REGISTERED SIGN
<Multi_key> <o> <R> : "®" registered # REGISTERED SIGN
<Multi_key> <O> <r> : "®" registered # REGISTERED SIGN
<Multi_key> <O> <R> : "®" registered # REGISTERED SIGN
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so they are still available this way.
_________________
Cheers,
Chris W
"Common sense: The collection of prejudices acquired by age 18." -- Einstein |
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Zebbeman
n00b
Joined: 14 Jun 2003
Posts: 56
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| Posted: Tue Nov 17, 2009 5:21 pm Post subject: |
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Thanks again!
It did not work exactly like you wrote, but almost. I changed:
xmodmap -e 'keycode 28 = t T trademark trademark t T'
to:
xmodmap -e 'keycode 28 = t T t T trademark trademark'
Zebbeman™ |
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Chris W
l33t
Joined: 25 Jun 2002
Posts: 960
Location: Brisbane, Australia
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| Posted: Tue Nov 17, 2009 9:26 pm Post subject: |
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Your AltGr key would seem to be mapped to the ISO_Level3_Shift keysym, which is why the 5th and 6th modifiers were needed rather than the 3rd/4th which are controlled by the Mode_Switch keysym. The doco on this stuff is truly confusing.
Anyway, good to see you going.
_________________
Cheers,
Chris W
"Common sense: The collection of prejudices acquired by age 18." -- Einstein |
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