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Improve docs for horizontal scrolling with mouse and touchpad (Bug#39979)

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* lisp/mwheel.el (mouse-wheel-tilt-scroll,
mouse-wheel-flip-direction): Improve docstrings.
* doc/emacs/frames.texi (Mouse Commands): Mention touchpads.
This commit is contained in:
İ. Göktuğ Kayaalp 2020-03-08 00:15:01 +03:00 • committed by Noam Postavsky
parent 1bc3fa0bd0
commit ef5744a988
2 changed files with 10 additions and 6 deletions
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9
doc/emacs/frames.texi
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@ -217,10 +217,11 @@ default bound to scrolling with the @key{Ctrl} modifier.
@vindex mouse-wheel-tilt-scroll
@vindex mouse-wheel-flip-direction
Emacs can also support horizontal scrolling if your mouse's wheel can
be tilted. This feature is off by default; the variable
@code{mouse-wheel-tilt-scroll} turns it on. If you'd like to reverse
the direction of horizontal scrolling, customize the variable
@code{mouse-wheel-flip-direction} to a non-@code{nil} value.
be tilted, or your touchpad supports it. This feature is off by
default; the variable @code{mouse-wheel-tilt-scroll} turns it on. If
you'd like to reverse the direction of horizontal scrolling, customize
the variable @code{mouse-wheel-flip-direction} to a non-@code{nil}
value.
When the mouse pointer is over an image, scrolling the mouse wheel
with the @key{Ctrl} modifier scales the image under the mouse pointer.

7
lisp/mwheel.el
View file

@ -145,13 +145,16 @@ face height."
;;; For tilt-scroll
;;;
(defcustom mouse-wheel-tilt-scroll nil
"Enable scroll using tilting mouse wheel."
"Enable horizontal scrolling via mouse or touchpad.
Also see `mouse-wheel-flip-direction'."
:group 'mouse
:type 'boolean
:version "26.1")
(defcustom mouse-wheel-flip-direction nil
"Swap direction of `wheel-right' and `wheel-left'."
"Swap direction of `wheel-right' and `wheel-left'.
This inverts the direction of horizontal scrolling. Also see
`mouse-wheel-tilt-scroll'."
:group 'mouse
:type 'boolean
:version "26.1")