* Get rid of the `canToggleGSensor` Device cap, it's now mandatory for `hasGSensor` devices. (This means Kindles can now toggle the gyro, fix#9136).
* This also means that `Device:toggleGSensor` is now implemented by `Generic`.
* Update the Screen & Gyro rotation constants to be clearer (c.f., https://github.com/koreader/koreader-base/pull/1568) (/!\ This might conceivably break some `rotation_map` user-patches).
* Input: Move the platform-specific gyro handling to Device implementations, and let Input only handle a single, custom protocol (`EV_MSC:MSC_GYRO`).
* Input: Refine the `rotation_map` disable method implemented in 43b021d37c. Instead of directly poking at the internal field, use a new method, `disableRotationMap` (/!\ Again, this might break some `rotation_map` user-patches).
* Input: Minor tweaks to event adjust hooks to make them more modular, allowing the Kobo implementation to build and use a single composite hook. API compatibility maintained with wrappers.
- Cleanup search and animation codes, fix inconsistencies
between animation/no-animation opening, and refreshes
glitches on eInk.
- Show menu item on tap, with buttons to either open
directly, or to walk there (removed earlier "Animation"
checkbox, so the choice can be decided later).
- Move event handlers into ReaderMenu/FileManagerMenu.
- Avoid duplicated and confusing results from gestures
and font-family submenus.
Exclude some screensaver option showing book content
(title, page image) when "Exclude this book cover" is checked.
Random image as fallback, KOReader logo as 2nd-order fallback.
Use the same mtime (the newest) for both entries, so that priority order
wins the tie, giving priority to the primary.
Avoids preferring an older legacy sidecar in case of issues with the new
files.
If there are hidden flows, this calculates the current page, total pages, percent, time left in chapter, and time left in the magic variables used in screensaver message only for the current flow. If there are no hidden flows, the behavior is the same as before.
Adjust image colors for PocketBook color devices to supply
brighter image colors. Make it a config option so we can
adjust it to a sensible default for all devices later.
Also enable HW Dithering for color devices: the dithering
flag allows us to figure out if what is viewed is an
image or text. This way we can enable color rendering
or not based on the dithering flag.
Piggybacking on the touch gesture handlers implied that the gesture
filter (tap and/or swipe) was still applied, which made no sense.
Also, stop the weird Event roundtrip for events we're actually the only
ones to handle, just call the handler ourselves directly.
Fix#9792
It possibly historically never made it out of InkView in the past, but
apparently that's no longer the case and/or every other key behaves the
same way anyway, so it's harmless at worst.
Fix#9791
