Photos in scope not visible until all loaded

[Kyle Nitzsche]

I think this is a generic unity8 issue that is exposed in the My Photos scope. This scope displays photos from the photo roll through mediascanner.

Problem:
When there are many photos, the scope does not display thumbnails for quite a while. (It may even be that no photo thumbnails display until all are loaded into memory.) This is an awkward user experience because the scope looks like nothing is happening for significant periods of time.

Expectation:
Photo thumbnails would display as they arrive. (Perhaps there would be some kind of window around what is currently visible in the scope so that as soon as photos in the current scroll area, before it by some amount, and after it by some amount are in memory, they could display and the user could scroll somewhat, with the window moving appropriately.)

[Andrea Cimitan (cimi)]

Probably not a bug in unity8, as we simply display what we receive from the backend. From a quick chat, when we receive data we display it, so if you see a blank dash is because the backend didn't set the data yet.

I think the data should behave as a list, where as soon as results are populating they are being appended in batches... for example for 1000 photos, send the first dozen then another dozen etc etc... until you reach 1000. That way we don't have to wait until 1000 photos are being processed in order to be sent to unity8.

[Michał Sawicz (saviq)]

> Probably not a bug in unity8, as we simply display what we receive from
> the backend. From a quick chat, when we receive data we display it, so
> if you see a blank dash is because the backend didn't set the data yet.
>
> I think the data should behave as a list, where as soon as results are
> populating they are being appended in batches... for example for 1000
> photos, send the first dozen then another dozen etc etc... until you
> reach 1000. That way we don't have to wait until 1000 photos are being
> processed in order to be sent to unity8.

Which is exactly what happens. It's not about the *items* not being shown in the UI, just about the images themselves not showing up. The dash has all the data it needs by that time.

[Olli Ries (ories)]

this bug needs to be targeted after RTM, via ota

[Victor Tuson Palau (vtuson)]

not sure about that, it basically freezes the phone for a few seconds

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 8.01+15.04.20141202-0ubuntu1

---------------
unity8 (8.01+15.04.20141202-0ubuntu1) vivid; urgency=low

  [ Michael Terry ]
  * Make sure that there is no window of opportunity for swiping away
    greeter before the lockscreen appears.
  * Don't allow dragging the greeter out from the left edge if it's
    hidden there. (LP: #1372952)

  [ Michał Sawicz ]
  * Move from Theme colour to direct UbuntuColors.orange for activity
    indicator and preview buttons

  [ Albert Astals ]
  * Use QImageReader not to load the image into memory twice (LP:
    #1384374)
  * Don't create the whole current scope delegates, just height * 3 (LP:
    #1384393, #1384374)
  * Make CroppedImageSizer async
  * Use ubuntu::connectivity::NetworkingStatus instead of
    QNetworkConfigurationManager
  * Compile with Qt 5.4 (LP: #1395636)

  [ Michael Zanetti ]
  * close previews and temp scopes on left edge/BFB (LP: #1391798)
  * make spread reversible (LP: #1368668, #1355284, #1368677)

  [ Andrea Cimitan ]
  * Different drag behaviour for not closable apps in spread (LP:
    #1368287)

  [ Daniel d'Andrada ]
  * Make UnityTestCase.touchFlick properly map event coordinates
 -- Ubuntu daily release <email address hidden> Tue, 02 Dec 2014 09:26:49 +0000

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 8.02+15.04.20150113~rtm-0ubuntu1

---------------
unity8 (8.02+15.04.20150113~rtm-0ubuntu1) 14.09; urgency=medium

  [ Albert Astals ]
  * Use QImageReader not to load the image into memory twice
  * Don't create the whole current scope delegates, just height * 3 (LP:
    #1384393)
  * Make CroppedImageSizer async
  * Rework how we set the ranges so we get some more asynchronousity
    from item views
  * Make sure changing a scope doesn't trigger creation/destruction of
    delegates until it's finished

  [ Michael Terry ]
  * Don't block handling power events on loading the greeter's qml and the
    background image. (LP: #1383277)
 -- Ubuntu daily release <email address hidden> Tue, 13 Jan 2015 15:18:13 +0000

[Yuan-Chen Cheng (ycheng-twn)]

hmm, what I saw is the other bug. mark fix commit in Savilerow.

[John McAleely (john.mcaleely)]

@pat, is there a reason this ended up in the phondations bucket? Doesn't look like it belongs.

[John McAleely (john.mcaleely)]

I take back the assignment. there appears to be no work to do here :-)