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input: don't map wheel events to BTN_{BACK,FORWARD}

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BTN_BACK and BTN_FORWARD are separate buttons. The scroll wheel don't
have any button mappings in libinput/wayland, so make up our own
defines.

This allows us to map them in mouse bindings.

Also expose BTN_WHEEL_{LEFT,RIGHT}. These were already defined, and
used, internally, to handle wheel tilt events. With this, they can
also be used in mouse bindings.

Finally, fix encoding used for BTN_{BACK,FORWARD} when sending mouse
button events to the client application. Before this, they were mapped
to buttons 4/5. But, button 4/5 are for the scroll wheel, and as
mentioned above, BTN_{BACK,FORWARD} are not the same as scroll wheel
"buttons".

Closes #1763
This commit is contained in:
Daniel Eklöf 2024-07-13 10:24:11 +02:00
parent 15c0078c2d
commit 1136108c97
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7 changed files with 59 additions and 27 deletions
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23
doc/foot.ini.5.scd
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@ -1156,10 +1156,13 @@ The trailing *COUNT* (number of times the button has to be clicked) is
optional and specifies the click count required to trigger the
binding. The default if *COUNT* is omitted is _1_.
To map wheel events (i.e. scrolling), use the button names *BTN_BACK*
(up) and *BTN_FORWARD* (down). Note that these events never generate a
*COUNT* larger than 1. That is, *BTN_BACK+2*, for example, will never
trigger.
To map wheel events (i.e. scrolling), use the button names
*BTN_WHEEL_BACK* (up) and *BTN_WHEEL_FORWARD* (down). Note that these
events never generate a *COUNT* larger than 1. That is,
*BTN_WHEEL_BACK+2*, for example, will never trigger.
Foot also recognizes tiltable wheels; to map these, use
*BTN_WHEEL_LEFT* and *BTN_WHEEL_RIGHT*.
A modifier+button combination can only be mapped to *one* action. Lets
say you want to bind *BTN\_MIDDLE* to *fullscreen*. Since
@ -1187,7 +1190,7 @@ actions listed under *key-bindings* can be used here as well.
Alt screen: send fake _KeyUP_ events to the client application, if
alternate scroll mode is enabled.
Default: _BTN_BACK_
Default: _BTN\_WHEEL\_BACK_
*scrollback-down-mouse*
Normal screen: scrolls down the contents.
@ -1195,7 +1198,7 @@ actions listed under *key-bindings* can be used here as well.
Alt screen: send fake _KeyDOWN_ events to the client application, if
alternate scroll mode is enabled.
Default: _BTN_FORWARD_
Default: _BTN\_WHEEL\_FORWARD_
*select-begin*
Begin an interactive selection. The selection is finalized, and
@ -1269,12 +1272,12 @@ actions listed under *key-bindings* can be used here as well.
Pastes from the _primary selection_. Default: _BTN\_MIDDLE_.
*font-increase*
Increases the font size by 0.5pt. Default: _Control+BTN\_BACK_
(also defined in *key-bindings*).
Increases the font size by 0.5pt. Default:
_Control+BTN\_WHEEL\_BACK_ (also defined in *key-bindings*).
*font-decrease*
Decreases the font size by 0.5pt. Default: _Control+BTN\_FORWARD_
(also defined in *key-bindings*).
Decreases the font size by 0.5pt. Default:
_Control+BTN\_WHEEL\_FORWARD_ (also defined in *key-bindings*).
# TWEAK