1799925 - panels and tooltips should be contain: paint

Status: RESOLVED FIXED

(Core :: XUL, task)

Description

[Emilio Cobos Álvarez (:emilio)]

Since they can't paint outside of the widget, it makes sense. Now that popups are not so special and they just use the top layer we can enforce it. This should save some work when adding / removing transforms to popups (since they won't change the containing block).

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1799925 - Make XUL popups contain: paint. r=#layout

Since they can't paint outside of the widget, it makes sense.

Now that popups are not so special and they just use the top layer we
can enforce it using contain: size.

This should save some work when adding / removing transforms to popups
(since they won't change the containing block).

Now popups can become dynamic reflow roots, and that caught some issues
with the reflow requests. We need to hit
nsMenuPopupFrame::LayoutPopup(), so the right thing to do is to use
NS_FRAME_IS_DIRTY.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/73dd9b390b9a
Make XUL popups contain: paint. r=dholbert

Comment 3

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/73dd9b390b9a