7e8cdbcf65
While #12256 papered over the tracking of a *single* suspend -> (resume->suspend) series of events, things still go out of sync if you tack on *more* suspend/resume events after that. The upside is that our *actual* tracking of suspend/resume is solid, so at least we're actually doing the right thing as far as PM is concerned. The downside is that on Kobo, the frontlight handling code is full of delays, and the ramping down/up itself also takes some time, so things can quickly overrun into the wrong event. This means a couple of things: * We need to cancel any scheduled frontlight toggles and ramps on Kobo, to ensure that only the one from the *last* event received goes through, in an attempt to limit the amount of potential crossover. * Tracking fl_was_on *cannot* reliably be done from the suspend/resume handlers (especially on Kobo), as the ramps themselves may cross over the event barriers (and we potentially cancel the task anyway), so this was moved to the very few interactive callers that will actually change the frontlight state. * On Kobo, crossover is still *somewhat* possible because the ramps take time. It's mostly harmless for the ramp down, we just need to tweak the ramp down to start from the actual intensity to avoid a weird jump on the initial step if there's an inconsistency. For the ramp up, we potentially need to manually kill the light first, because off -> on assumes it *really* starts from off ;). Followup to #12256 Fix #12246 (again)
KOReader is a document viewer primarily aimed at e-ink readers.
Download • User guide • Wiki • Developer docs
Main features
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portable: runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS.
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multi-format documents: supports fixed page formats (PDF, DjVu, CBT, CBZ) and reflowable e-book formats (EPUB, FB2, Mobi, DOC, RTF, HTML, CHM, TXT). Scanned PDF/DjVu documents can also be reflowed with the built-in K2pdfopt library. ZIP files are also supported for some formats.
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full-featured reading: multi-lingual user interface with a highly customizable reader view and many typesetting options. You can set arbitrary page margins, override line spacing and choose external fonts and styles. It has multi-lingual hyphenation dictionaries bundled into the application.
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integrated with calibre (search metadata, receive ebooks wirelessly, browse library via OPDS), Wallabag, Wikipedia, Google Translate and other content providers.
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optimized for e-ink devices: custom UI without animation, with paginated menus, adjustable text contrast, and easy zoom to fit content or page in paged media.
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extensible: via plugins
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fast: on some older devices, it has been measured to have less than half the page-turn delay as the built in reading software.
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and much more: look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, over-the-air software updates, an FTP client, an SSH server, …
Please check the user guide and the wiki to discover more features and to help us document them.
Screenshots
Installation
Please follow the model specific steps for your device:
Android • Cervantes • Kindle • Kobo • Linux • Pocketbook • reMarkable
Development
Setting up a build environment • Collaborating with Git • Building targets • Porting • Developer docs
Support
KOReader is developed and supported by volunteers all around the world. There are many ways you can help:
- fix bugs and implement new features
- translate the program into your language or improve an existing translation
- document lesser-known features on the wiki
- help others with your knowledge on the forum
Right now we only support liberapay donations.
Contributors
