Add thumbnail support

Basic Info

This is a feature request.

I'm using Android in version: 7.1.1 (Pixel)

I'm running Cryptomator in version: 0.3.1

Description

Please show thumbnails as in the Native Dropbox Android App. Scrolling through hundreds of files named IMG_20160604_165251.jpg is very inconvenient.

[tobihagemann]

Thank you for your feature request!

Additional info: It's similar to the iOS app (cryptomator/cryptomator-ios#73) and comes with the same challenges.

Perhaps you could do something similar to Windows. When jpg/png/gif files are added to the Vault, the Cryptomator app creates (or updates) a hidden "thumbs.db" file, which then gets sync'd to dropbox. Then when users open a vault on android (or iOS), Cryptomator automatically downloads, decrypts "thumbs.db", to display thumbnails. It would be far less bandwidth and CPU intensive than generating the thumbnails on the fly.

…

On Tue, Mar 14, 2017 at 1:04 PM, Tobias Hagemann ***@***.***> wrote: Thank you for your feature request! Additional info: It's similar to the iOS app (cryptomator/cryptomator-ios# 73 <cryptomator/cryptomator-ios#73>) and comes with the same challenges. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#41 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AB2Fr6VGmHbWgE4LkbVtFR7Ha-7wwNZnks5rlsijgaJpZM4Mc27S> .

-- m: 347-542-7368

[markuskreusch]

@ghost Yes, thats something we already discussed internally. Problems with this approach are that thumbnails for existing images would not be available, but this could be acceptable. An alternative could be to use the cache implemented in #48, but of course this would only work for some image files. We will see what we will do in the end.

[jwsp1]

Doesn't Cryptomator need to fully download all files before being able to show thumbnails? This probably takes ages given that phones take 5-10MP photos.
Technically, would it be possible to download a compressed/rescaled version of photos?
A 9 MB photo results in a ~400KB (1366x768 pixels) or ~700KB (1920x1080 pixels) file. Even on a tablet, 1920x1080 pixel photos still look pretty clear. This will heavily increase download/decrypt speed.
So to get thumbnails work, I would welcome the ability to download/cache certain (sub-)folders.

[serialpotato]

Wont it be possible to also keep thumbnails of images encrypted in the cache directory of encrypted storage and the cryptomator app configured to automatically decrypt the encrypted cache as it lists the files. Ideally, these thumbs would be a fraction of image, <100Kb with some whatsapp picture algo that retains most detail with minimum size. It will take few more moment to load all thumbnails as the whole directory is listed. And when user clicks on a file, full image is downloaded.

So a cache directory, whatsapp like algo for image thumbnail retaining max data in small size and app to auto load all thumbs or of coreesponding directory when its visited

[alexanderadam]

I'm not sure whether this is relevant for someone but IMHO rcx (F-Droid) is able to show thumbnails. It's based on rclone, though. Thus this is only a solution if Cryptomator interoperability is not necessary for you.

[serialpotato]

I'm not sure whether this is relevant for someone but IMHO rcx (F-Droid) is able to show thumbnails. It's based on rclone, though. Thus this is only a solution if Cryptomator interoperability is not necessary for you.

Now, I hate myself for subscription of cryptomator. It's practically useless for photos. rcx just works!

[T81]

cryptomator/cryptomator-ios#73 (comment) looks promising though

[uhLydn]

cryptomator/cryptomator-ios#73 (comment) looks promising though

It does for iOS. Sad Android Users here..