Fixes#6489.
The issue arose in multitap scenarios, where the tip display state
became desynchronised with the actual display state as maintained in
the Android code.
The fix I applied was to reduce some of the state checks into the js
wrapper android-host.js. This is not ideal. The state machine for key
tip display is scattered across four functions in three files:
* visualKeyboard.ts: VisualKeyboard.highlightKey
* visualKeyboard.ts: VisualKeyboard.showKeyTip
* embedded/keytip.ts: KeyTip.show
* android-host.js: oskShowKeyPreview / oskClearKeyPreview
I have moved the actual re-creation check for the tip to the lowest
level functions -- those in android-host.js. But a more detailed look at
the state machine and a refactoring would certainly be worthwhile.
Fixes#6455.
This involved adding an extra hint to the data passed into the lexical
model layer, being the CasingForm that the current layer wants to use.
Given there are several entry points to the lexical model layer, this
meant a few places where we needed to check the current layer.
I refactored the very long function `InputProcessor.processKeyEvent` to
extract out the `buildAlternates` function. There should be no
functional changes to the `buildAlternates` code. But it makes
`processKeyEvent` significantly easier to read.
While this was done in code as a global override, probably following
Apple stylistic changes, it is better to leave this to the keyboard
developer to decide on.
Adjusts the dimensions to use pixel boundaries to prevent antialiasing
for some of the key preview and longpress popups, and adjusts horizontal
positioning of key preview to center more precisely, for iOS.
Fixes#5929.
Fixes#6381.
This fixes four separate issues with the longpress popups and key
previews:
1. The key preview was offset by a couple of pixels (unreported issue).
2. The background 'shim' did not cover the key caps, which caused them
to look startlingly white when the rest of the background greyed
down (#5929).
3. The popup menu was incorrectly wrapping to two rows due to sizing
model mismatches (#6381).
4. The popup menu would be realigned incorrectly for the in-app
keyboard, when moving it to keep it in the keyboard area (#5929).
