But I wanted to query anchors at runtime once too, a few years ago; I think I’ve forgotten why.
> On 6 Apr 2018, at 13:58, Mitch Curtis <mitch.cur...@qt.io> wrote: > > https://bugreports.qt.io/browse/QTBUG-66264 is semi-related to this, or at > least explains why we can’t really return null if they’re not set. > > Without having more information about your use case, it seems like quite a > corner case. > > From: Alexander Ivash [mailto:elder...@gmail.com] > Sent: Friday, 6 April 2018 1:41 PM > To: Mitch Curtis <mitch.cur...@qt.io> > Cc: interest@qt-project.org > Subject: Re: [Interest] How to determine whether QML item is anchored? > > Thanks, I'm aware of this, but this is a bit different.. Would be great to > get ability to compare against something like anchors.defaultLeft or > anchors.NoAnchor in future. > > Sent from Mailspring, the best free email app for work > On Apr 6 2018, at 2:38 pm, Mitch Curtis <mitch.cur...@qt.io> wrote: > > I’m not sure if it helps in your situation, but perhaps you could take a look > at AnchorChanges: > > > > http://doc.qt.io/qt-5/qml-qtquick-anchorchanges.html > > > > When the item is in an “anchored” state: > > > > states: [ > > State { > > name: "anchored" > > > > AnchorChanges { > > target: myRect > > anchors.top: window.top > > anchors.bottom: window.bottom > > } > > PropertyChanges { > > target: myRect > > color: "green" > > } > > }, > > State { > > name: "not-anchored" > > > > AnchorChanges { > > target: myRect > > anchors.top: undefined > > anchors.bottom: undefined > > } > > > > PropertyChanges { > > target: myRect > > color: "red" > > } > > } > > ] > > > > This assumes that you have control over the anchors, though. > > > > From: Alexander Ivash [mailto:elder...@gmail.com] > Sent: Friday, 6 April 2018 1:23 PM > To: Mitch Curtis <mitch.cur...@qt.io> > Cc: interest@qt-project.org > Subject: Re: [Interest] How to determine whether QML item is anchored? > > > Let's say I'm trying to make the logic like this: "If parent component is > anchored, make a child green, otherwise make it red" > > > Sent from Mailspring, the best free email app for work > On Apr 6 2018, at 2:20 pm, Mitch Curtis <mitch.cur...@qt.io> wrote: > > > What are you trying to do? > > > > > > From: Interest [mailto:interest-bounces+mitch.curtis=qt...@qt-project.org] On > Behalf Of Alexander Ivash > Sent: Friday, 6 April 2018 11:40 AM > To: interest@qt-project.org > Subject: [Interest] How to determine whether QML item is anchored? > > > > What I'm missing? It seems like even not anchored item has > anchors.right/left/top/bottom set, so it is not possible to compare with > 'undefined' or something. Of course introducing change handler allows to > track moment of anchoring (although still no way to track un-anchoring), but > this is a bit ugly and not 'Qt-way'. > > > > Sent from Mailspring, the best free email app for work > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
