This app allows utilization of a Tolino ebook reader's sleep screen to display announcements or data from a web source. Using the sleep screen means that the reader will still be available to serve its main purpose, and will go back to display useful information automatically when putting itself to sleep.
The app has been tested with a Tolino page with software 14.1.0. It may be broken with current versions of the Tolino software, or models with advanced e-ink displays. Still, the software may be useful for reference.
The app is notified of changes to the device's state only after the system has drawn its own sleep images to the screen. For a smooth transition, it is possible to replace the Tolino's sleep images with an image that has no content, a "transition image." Paths to sleep images are hardcoded into the Tolino system, thus it is necessary to perform a minor modification to the system partition in order to have it display a different image when going to sleep. The modification is harmless and may be reverted any time, but requires root access while being applied, or reverted. Proceed as follows:
/system/bin/su
or /system/xbin/su
, plus a compatible superuser app to grant
root access to Android apps.When "override system sleep images" is checked in the app's preferences, /data/sleep/images/
will contain the following files:
transition.jpg
suspend.jpg
suspend_charging.jpg
suspend_batteryfull.jpg
By default, suspend*.jpg
files are symlinks to transition.jpg,
which is updated by
the app whenever a different transition image is selected.
By replacing symlinks with actual files, or pointing them elsewhere, you may use custom transition images.
Make sure to leave transition.jpg
alone, as it will be overwritten each time
a different transition image is selected in the preferences screen.