Have them both usable on non-touch devices.
Also:
FrameContainer: fix focus border handling, and draw inner border after the
content (to prevent it from being overridden by the content bgcolor).
Rename it to "Dimension units", and make it a radio submenu.
Migrate the previous metric_length setting to this new dimension_units
one.
Update optionsutil to follow it.
Using `require` didn't make much sense since most of them are only used in a single place anyway, and it takes care of a few weird interactions in the process (besides not polluting `package.loaded` with useless crap ;)).
* UIManager: Let the fb backend deal with Kaleido wfm promotion. This fixes a number of quirks that poisoned the refresh queue with spurious full-screen refreshes. See https://github.com/koreader/koreader-base/pull/1865 for more details.
* This also means we now disable Kaleido waveform modes when color rendering is disabled (remember to trash your thumbnail cache if you don't want to mix color w/ grayscale thumbnails, though).
* UIManager: Merge refreshes that share an edge, because that was driving me nuts (and would have most likely been merged by the kernel anyway). A perfect test-case is the FM, which trips two separate refreshes because of its title bar.
* ReaderFlipping: Use sensible dimensions, so that we only refresh the icon's region.
* ReaderBookmark: Only refresh the dogear instead of the whole page when toggling bookmarks.
* NetworkSetting: Make it a real boy, so it consistently refreshes properly on dismiss instead of relying on UIManager saving the day.
* Kobo: Aggressively prevent *both* suspend & standby while MTK devices are plugged-in, as both will horribly implode the kernel (we previously only prevent standby while charging).
* Kobo: Switch to 8bpp on B&W MTK devices (or when color rendering is disabled on Kaleido panels).
K4 is ergonomically designed to be held with one hand (one's hand wrapped around the back and both thumb and middle finger on either PgFwd buttons).
This PR allows users to individually invert left and right page turners such that it can be operated just with one hand. It also closes#9350
Not sure if there are any other devices with two sets of page turn buttons, so currently limited to kindle, excluding kindle Voyage, but could be added too, albeit with some gymnastics.
Menu key support for some widgets. would have closed#11783 and #6463 (cumulative with @comphilip's fixes)
It fixes a problem where some virtual keys were not available for non-touch users. closes#11862
Also, adds keyboard settings to non-touch devices. closes#11934
Added in <https://github.com/koreader/koreader/pull/8722> and unproblematic for the past two years, but Weblate has now decided to complain about it to the extent of disabling translations:
> Error message
String contains control character: 'If some book titles, dictionary entries and such are not displayed well but shown as \ufffe\ufffe or ��, it may be necessary to download the required fonts for those languages. They can then be enabled as additional UI fallback fonts.\nFonts for many languages can be downloaded at:\n\nhttps://fonts.google.com/noto\n\nOnly fonts named "Noto Sans xyz" or "Noto Sans xyz UI" (regular, not bold nor italic, not Serif) will be available in this menu. However, bold fonts will be used if their corresponding regular fonts exist.'
