A DreamService shows a full-screen clock, the date and the next alarm,
digital or as the world clock's analog face, on black. Night mode dims
every colour towards black and turns the display down; the clock moves
to a new spot each minute so nothing burns in. It wakes only on the
minute and on a time, zone or 12/24-hour change.
The tabs' settings gear becomes an overflow menu with "Screen saver" and
"Settings". An app cannot start the system's dream without a system
permission, so that item opens an activity with the same content, which
keeps the screen on only while charging. Style and night mode live in
Settings > Clock and in the dream's own settings screen, and are carried
in backups; older backups restore the defaults.
Fixes#25
makiolaj
1e29226364