** Changed in: ubuntu-ui-toolkit (Ubuntu)
Assignee: (unassigned) => Zsombor Egri (zsombi)
** Changed in: ubuntu-ui-toolkit (Ubuntu)
Status: In Progress => Fix Released
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While implementing the bug fix for #1499178 I started to get segfault on
UITK Gallery when one column mode was set. Every time I tried to push a
second page in a column was causing segfault. Sizing invisible item to
fill the AdaptivePageLayout solves the segfault, however would not solve
the pages
Actually the Page does not fill its parent, but anchors to all sides
except the top, and the Page.height depends on the parent, the header,
and whether the Page has a flickable. As long as we don't move the
header into the page, I don't see a better solution than what we have
now. If we don't
Tim, sorry, this auto-correct reformulated my words, I meant concepted
badly :)
Page filling its parent is what causes the width changes when
reparented, do you agree? I do not say that width becoming 0 is right,
but I disagree Page filling its parent is also a wanted behaviour. You
can always
The root cause of the problem you see is because the Page itself anchor
fills to its parent. This was connected badly, and because of that we
have this problem.
A fix would be to have property change for each Page added into the
hidden item to unset the anchor.fill of the page and restore it
Zsombi what do you mean with "connected badly"?
The page fills its parent, but that is what you want, also when it is
(visible) inside the AdaptivePageLayout. You should not set a fixed
width because the columns can be resized (by changing the window size,
changing the column layouts, or directly
OK, so for music the pages that are noticeable with this bug use the
custom ColumnFlow, so I have patched [1] this to only update the widths
of the cards when the view is visible, which appears to have resolved
the issue for us.
However, this should probably still be a bug in the SDK as it was
Internally the AdaptivePageLayout has an Item with id hiddenPages which
is the parent for the Pages that were added but not visible. We did not
set its anchors, that is why it is null. A quick fix to make its width
not 0 is to make it fill its parent (the AdaptivePageLayout), but then
still the
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