Re: pixel-scroll-precision-mode very slow on macOS with regular mouse wheel

[Alan Third]

On 8 December 2021 05:48:47 GMT, Po Lu <luangruo@yahoo.com> wrote:
>Aaron Jensen <aaronjensen@gmail.com> writes:
>
>> macOS scrolling w/ a mouse wheel has acceleration. If I scroll slowly,
>> it goes very slowly, 1 tick is a couple pixels. If I scroll quickly I
>> can go through a whole page in a handful of ticks. Perhaps that
>> mechanic would need to be replicated?
>
>I don't understand what you mean by that: when precision deltas are not
>available (which is the case with your mouse), Emacs uses the fallback
>deltas provided by macOS, which should be sufficient for our purposes.
>
>But I suspect I misunderstood how those deltas work.  They might be
>reported as portions of an abstract unit, instead of in pixels, which is
>the case with precise deltas.
>
>In that case, we will have to scale those deltas by some method, but I
>don't know what TRT is for macOS.

Apple's docs say multiply them by the line height, so a delta of 1.0 should 
scroll one line. You deleted the comment in the code that explained that.
-- 
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