[SDK] MainView.backgroundColor is not usable any more

The biggest problem is that it is not possible to know what color should be used in the labels due to the fact that we don't necessarily know what is the color the label is rendered on, unfortunately Text/Label does not support chameleon colors.

OTOH, I would be glad to see those colors which cause trouble, so we can see what luminosity or other color tone we should use to chose the proper theme.

there is no problem with the backgroundColor.

There are palette issues with certain footer colors. A new bug will be filed.

Actually it was reproduced by bug #1386208. It seams the bug shows up when the MainView uses different colours for backgroundColor and header/footerColor. In this case the theme chosen by MainViewStyle will be the SuruGradient, which is deprecated, however the theme chooser logic wasn't fixed.

We can start to ignore headerColor and footerColor of MainView. Then we never have gradient backgrounds any more (except if apps implement a custom background and don't rely on MainView).

Question for design: Do we need to support gradient backgrounds?

Instead of deprecating gradient backgrounds, we can simply use either the Ambience or SuruDark theme (no SuruGradient) depending on the headerColor of the gradient.

It is not about deprecating gradient backgrounds, but getting rid of the automatic SuruGradient theme selection.

However, maybe header colours should be transparent when gradients are used as app background, and should take the theme colours only when solid fill is used. But this is up to the designers.

It has been confirmed that this is caused when gradient background is set of the application, which loads SuruGradient theme. The theme is deprecated, and SuruDark or Ambiance theme should be used whenever appropriate.

Giorgio, I don' think there is any need to get this bug triaged from your side.. unless you want to have a different solution...

This bug was fixed in the package ubuntu-ui-toolkit - 1.1.1364+15.04.20141209-0ubuntu1

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ubuntu-ui-toolkit (1.1.1364+15.04.20141209-0ubuntu1) vivid; urgency=medium

  [ Zsombor Egri ]
  * Theming fixes: application theming, binding loop fix, auto-theming
    moved into MainView and it is applicable only on Ambiance and
    SuruDark, SuruGradient is no longer auto-themed.
    Fixes: LP: #1213043, LP: #1277647, LP: #1330510, LP: #1356779,
           LP: #1389792.
  * ServiceProperties component to Ubuntu.Components 1.1.
    Fixes: LP: #1391877.
  * New ListItem component base. Support for leading/trailing actions.
    Exported in Ubuntu.Components 1.2 UNSTABLE release.
    Fixes: LP: #1097728, LP: #1372592, LP: #1383870.
  * removing failing ServiceProperties and app-theming branches
  * Application theming ant other theming related binding loop fixes
  * ServiceProperties DBus property watcher

  [ Christian Dywan ]
  * Do the default theme check properly: for non-debug and without
    build errors.
  * Don't activate the control in ListItem.Standard implicitly.
    Fixes: LP: #1372563.
  * Improve AutoPilot caret dragging test cases.
  * Use new qt_gl_set_global_share_context setter with Qt 5.4.
    Fixes: LP: #1397979.
  * Add sortCaseSensitivity to the SortFilterModel example.
    Fixes: LP: #1391034.
  * Change offending links into bold font. Fixes: LP: #1395011.

  [ Daniel d'Andrada ]
  * This is needed by unity8 for the "shell rotation" feature (ie
    shell does all the rotation work instead of apps rotating
    themselves). unity8's dialogs (like the power dialog when you
    long press the power button) should follow its parent item
    rotation and size, as one would expect, and not be sneakily
    reparented to the scene root item, in which case the shell
    UI would be rotated but its dialog would not.
    Related bug LP: #1394511. Fixes: LP: #1394511.

  [ Tim Peeters ]
  * Remove the old header separator style. Fixes: LP: #1372590.

  [ Loïc Molinari ]
  * Made the UCAlarmPrivate destructor private.

  [ Ubuntu daily release ]
  * New rebuild forced
 -- Ubuntu daily release <email address hidden> Tue, 09 Dec 2014 11:47:33 +0000