Improvement: Rework playlist progressbar

[wutschel]

Description

Use UIView and their backgroundColor instead of UIImages. The progress bar itself is a child view of a masking UIView. The layout is corrected to have the whole progress view aligning with cell's bottom. The animation from 0-to-x% was updated to finish well within the update cycle time of 1 second and to only run, if the progress bar is updated first time for an already advanced playback. All now obsolete images are removed.

Screenshots (left = before, right = after):

Summary for release notes

Improvement: Rework playlist progressbar

[kambala-decapitator]

use UIProgressBar

[wutschel]

use UIProgressBar

Oh no. I wasn't even aware this exists ...

[wutschel]

use UIProgressBar

i played around with UIProgressView. I see the beauty of just setting progress and bar/track color, but I cannot make the layout as I want to. For example I am not able to change its height without setting transform, which has unwanted side effects.

Does not have any effect using UIProgressViewStyleBar style (width and origin can be changed though):

CGRect frame = playlistProgressbar.frame;
frame.size.height = 6;
playlistProgressbar.frame = frame;

[kambala-decapitator]

try setting progressImage to a 1pt wide image of desired height, although not sure it'd help

[wutschel]

try setting progressImage to a 1pt wide image of desired height, although not sure it'd help

Doesn't make any difference.

[kambala-decapitator]

try setting progressImage to a 1pt wide image of desired height, although not sure it'd help

Doesn't make any difference.

ok, then let's forget about UIProgressView

[kambala-decapitator]

now you should use your new progress bar component

[wutschel]

now you should use your new progress bar component

I guess I shot myself in the foot now. The class I introduced in #1220 is not a generic progress bar, but already tailored for PVR/broadcast (I even should rename the class to reflect this). Here, I need a generic one which only does the progress bar itself. This could then be used in the PVR/broadcast and the playlist progress view.

Separate PR to unify this later? Otherwise I would introduce the progress bar view class here, and then rebase/adapt the LiveTV PR to make use if it.

[kambala-decapitator]

performing refactoring right in #1220 would fine as well

[kambala-decapitator]

performing refactoring right in #1220 would fine as well

or even better: merge #1220, then refactor in this PR

[wutschel]

or even better: merge #1220, then refactor in this PR

Locally did this already based on whatever #1220 is currently looking like. Now adding the whole playlist progress view programmatically using a new class PlaylistProgressView.

[wutschel]

Here we go, updated this PR to make use of latest and greatest changes/concept discussed in #1220.