From 004a5e104256da8ec3a845e86c6a10b5c7998b24 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= Date: Fri, 6 Sep 2019 11:50:52 +0200 Subject: [PATCH] iconGrid: Queue a relayout after child opacity changes We're using a vfunc override for `get_paint_volume` to exclude children with an opacity of 0 from the paint volume and thus decrease the size of the area we need to paint. Now if the paint volume is requested during the spring animation (the real icons are hidden using an opacity of 0 and clones are used for the animation), `get_paint_volume` returns a paint volume with a height of 0. After that, the spring animation finishes and the icon-opacities are set to 255 in `_resetAnimationActors`, and since we cache paint volumes and there's no reason for Clutter to assume it got invalid, the icons end up not being painted. Fix this by queuing a relayout of the grid when the opacity of a child is changed from or to 0, which manually invalidates the paint volume. The reason why this is not an issue with the paginated icon grid (all-apps view) is probably because StScrollView invalidates the paint volume a lot more often than regular containers. Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1502 --- js/ui/iconGrid.js | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/js/ui/iconGrid.js b/js/ui/iconGrid.js index 08d72aff1..1d22e821a 100644 --- a/js/ui/iconGrid.js +++ b/js/ui/iconGrid.js @@ -247,11 +247,23 @@ var IconGrid = GObject.registerClass({ _childAdded(grid, child) { child._iconGridKeyFocusInId = child.connect('key-focus-in', this._keyFocusIn.bind(this)); + + child._paintVisible = child.opacity > 0; + child._opacityChangedId = child.connect('notify::opacity', () => { + let paintVisible = child._paintVisible; + child._paintVisible = child.opacity > 0; + if (paintVisible !== child._paintVisible) + this.queue_relayout(); + }); } _childRemoved(grid, child) { child.disconnect(child._iconGridKeyFocusInId); delete child._iconGridKeyFocusInId; + + child.disconnect(child._opacityChangedId); + delete child._opacityChangedId; + delete child._paintVisible; } vfunc_get_preferred_width(_forHeight) {