More efficiant roomList delegate in view detection

This commit is contained in:
miruka 2020-04-17 06:30:23 -04:00
parent ecb88864a9
commit 8b02f0e462
2 changed files with 19 additions and 14 deletions

View File

@ -45,20 +45,15 @@ Column {
delegate: HLoader {
asynchronous: false
active: firstSyncDone && inView
active: index === 0 || (
roomList.firstDelegateHeight !== 0 &&
index >= roomList.firstIndexInView &&
index <= roomList.lastIndexInView
)
width: roomList.width
height: roomList.firstDelegateHeight
// XXX: these assume the view has no spacing/margins/header/footer
readonly property int yTop:
accountRooms.y + account.height + accountRooms.spacing +
model.index * height
readonly property int yBottom: yTop + height
readonly property bool inView:
yBottom >= mainPaneList.contentY &&
yTop <= mainPaneList.contentY + mainPaneList.height
readonly property var sourceModel: model
sourceComponent: Room {
@ -71,7 +66,9 @@ Column {
highlight: null // managed by the AccountRoomsList
onFirstDelegateHeightChanged: firstDelegateHeight = firstDelegateHeight
onFirstDelegateHeightChanged:
if (firstDelegateHeight !== 0)
firstDelegateHeight = firstDelegateHeight
// Delete 0 must *always* be loaded, and all delegates must have the
@ -81,6 +78,14 @@ Column {
contentItem.visibleChildren[0].implicitHeight :
0
readonly property int firstIndexInView:
(mainPaneList.contentY - account.height - accountRooms.spacing) /
firstDelegateHeight -
accountRooms.y / firstDelegateHeight
readonly property int lastIndexInView:
firstIndexInView + mainPaneList.height / firstDelegateHeight
readonly property bool hasActiveRoom:
window.uiState.page === "Pages/Chat/Chat.qml" &&
window.uiState.pageProperties.userId === userId

View File

@ -13,9 +13,9 @@ HTileDelegate {
opacity:
model.left ? theme.mainPane.listView.room.leftRoomOpacity : 1
topPadding: theme.spacing / (model.index === 0 ? 1 : 1.5)
bottomPadding:
theme.spacing / (model.index === view.count - 1 ? 1 : 1.5)
// topPadding: theme.spacing / (model.index === 0 ? 1 : 1.5)
// bottomPadding:
// theme.spacing / (model.index === view.count - 1 ? 1 : 1.5)
leftPadding: theme.spacing * 2
rightPadding: theme.spacing