D29692: Recommend better width calculation for PlaceholderMessage

[Nathaniel Graham]

ngraham created this revision.
ngraham added a reviewer: Kirigami.
Herald added a project: Kirigami.
Herald added a subscriber: plasma-devel.
ngraham requested review of this revision.

REVISION SUMMARY
  Left and right anchors + margins + vertical centering don't work well work together, and
  the text overflows instead of wrapping. Setting the vertical anchor and defining a width
  works much better. Also recommend larger margins by default as this looks nicer.
  
  I don't want to define a default width and alignment in the component itself that uses
  anchors and references `parent`, since it may be inside a layout rather than being the
  child of a ListView or something.

TEST PLAN
  Literally none, it's a documentation improvement. The recommended code works thoigh.

REPOSITORY
  R169 Kirigami

BRANCH
  recommend-better-PlaceholderMessagewidth (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29692

AFFECTED FILES
  src/controls/PlaceholderMessage.qml

To: ngraham, #kirigami
Cc: plasma-devel, fbampaloukas, GB_2, domson, dkardarakos, ngraham, apol, ahiemstra, davidedmundson, mart
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/plasma-devel/attachments/20200512/7df25c45/attachment-0001.htm>