broulik created this revision. broulik added a reviewer: Plasma. Herald added a project: Plasma. Herald added a subscriber: plasma-devel. broulik requested review of this revision.
REVISION SUMMARY Opacity affects each item individually, so during the transition, you have an `Image` with a certain opacity and a `Rectangle` behind it. Since the `Image` has its `opacity` transition to zero, you can see through it to the background `Rectangle` behind it. Using `layer` during the transition we can combine the entire item into a single surface and animate its `opacity` as a whole. BUG: 410313 FIXED-IN: 5.17.0 TEST PLAN - Wallpaper transition doesn't flash anymore. Previously was most noticeable when just changing the size mode (e.g. from stretched to centered) Not really sure about the performance implications of using `layer` on such a a large surface? REPOSITORY R120 Plasma Workspace REVISION DETAIL https://phabricator.kde.org/D23021 AFFECTED FILES wallpapers/image/imagepackage/contents/ui/main.qml To: broulik, #plasma Cc: plasma-devel, LeGast00n, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
