Timers run in their own thread, to take advantage of existing Java
Executor features. By hooking into ALooper, we can spin the main
Activity's UI thread event loop without causing a fuss, or spinning the
CPU by just polling our event loop constantly.
This will let us spawn a new process for an Android Service to handle
all our WebContent needs. The ServiceConnection is manged by each
WebView. The lifecycle of the Service is not quite clear yet, but each
bindService call will get a unique Messenger that can be used to
transfer the WebContent side of the LibIPC socketpair we use in other
ports.
This allows our WebViewImplementationNative class to paint into an
Android Bitmap class from the onDraw() view event. We also set the
viewport geometry from the view since we're setting the Kotlin Bitmap
at the same time.
This template app from Android Studio should hopefully be more fun to
work on than the Qt wrapped application we were using before. :^)
It currently builds the native code using gradle rules, and has a stub
WebViewImplementationNative class that will wrap a c++ class of the same
name that inhertis from WebView::ViewImplementation. Spawning helper
processes and creating proper views in Kotlin is next on the list.