AccountBar: reduce opacity of collapsed accounts

src/gui/MainPane/AccountBar.qml

@@ -57,6 +57,13 @@ Rectangle {
                     // compact: tile.compact
 
                     radius: theme.mainPane.accountBar.account.avatarRadius
+
+                    opacity:
+                        tile.collapsed ?
+                        theme.mainPane.accountBar.account.collapsedOpacity :
+                        1
+
+                    Behavior on opacity { HNumberAnimation {} }
                 }
 
                 MessageIndicator {
@@ -94,6 +101,10 @@ Rectangle {
             contextMenu: AccountContextMenu { userId: model.id }
 
             onLeftClicked: roomList.goToAccount(model.id)
+
+            readonly property bool collapsed:
+                (window.uiState.collapseAccounts[model.id] || false) &&
+                ! roomList.filter
         }
 
         highlight: Item {

src/themes/Midnight.qpl

@@ -283,6 +283,7 @@ mainPane:
         color background: colors.mediumBackground
 
         account:
+            real collapsedOpacity: 0.3
             color background:      "transparent"
             int avatarRadius:      controls.avatar.radius