Fix disappearing icons in frequent view

https://bugzilla.redhat.com/show_bug.cgi?id=1753337

fix-disappearing-icons.patch

@@ -0,0 +1,90 @@
+From 4915a9e8e404555379aa8807ad8c53c7589f2ae7 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
+Date: Sun, 8 Sep 2019 18:09:23 +0200
+Subject: [PATCH 1/2] iconGrid: Delete private child property when removing
+ child
+
+Delete a private property we set when the child got added to make sure
+the reference is deleted after the child got removed from the grid.
+
+https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/704
+---
+ js/ui/iconGrid.js | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/js/ui/iconGrid.js b/js/ui/iconGrid.js
+index e0a1e8bd8..08d72aff1 100644
+--- a/js/ui/iconGrid.js
++++ b/js/ui/iconGrid.js
+@@ -251,6 +251,7 @@ var IconGrid = GObject.registerClass({
+ 
+     _childRemoved(grid, child) {
+         child.disconnect(child._iconGridKeyFocusInId);
++        delete child._iconGridKeyFocusInId;
+     }
+ 
+     vfunc_get_preferred_width(_forHeight) {
+-- 
+2.23.0
+
+
+From 004a5e104256da8ec3a845e86c6a10b5c7998b24 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
+Date: Fri, 6 Sep 2019 11:50:52 +0200
+Subject: [PATCH 2/2] 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) {
+-- 
+2.23.0
+

gnome-shell.spec

@@ -1,6 +1,6 @@
 Name:           gnome-shell
 Version:        3.34.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Window management and application launching for GNOME
 
 License:        GPLv2+
@@ -17,6 +17,9 @@ Patch1: gnome-shell-favourite-apps-firefox.patch
 Patch2: 0001-endSessionDialog-Immediately-add-buttons-to-the-dial.patch
 Patch3: 0002-endSessionDialog-Support-rebooting-into-the-bootload.patch
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1753337
+Patch4: fix-disappearing-icons.patch
+
 %define libcroco_version 0.6.8
 %define eds_version 3.33.1
 %define gnome_desktop_version 3.33.4
@@ -211,6 +214,9 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/evolution-calendar.de
 %{_mandir}/man1/gnome-shell.1*
 
 %changelog
+* Fri Sep 20 2019 Florian Müllner <fmuellner@redhat.com> - 3.34.0-2
+- Fix disappearing icons in frequent view
+
 * Mon Sep 09 2019 Florian Müllner <fmuellner@redhat.com> - 3.34.0-1
 - Update to 3.34.0