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Code Packages Releases Activity

workaround for all the terrible default QT scrolling behavior

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- DankGridView, DankFlickable, DankListView\
- Touchpad behavior greatly improved by preserving momentum
- Fixed janky nested scrollers in control center
This commit is contained in:
bbedward
2025-08-07 15:22:40 -04:00
parent 02ab8e2db5
commit 98d2ca24a8
25 changed files with 973 additions and 788 deletions
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92
Modules/ProcessList/ProcessListView.qml
View File

@@ -49,9 +49,7 @@ Column {
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: {
processListView.captureAnchor();
SysMonitorService.setSortBy("name");
processListView.restoreAnchor();
}
}
@@ -90,9 +88,7 @@ Column {
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: {
processListView.captureAnchor();
SysMonitorService.setSortBy("cpu");
processListView.restoreAnchor();
}
}
@@ -131,9 +127,7 @@ Column {
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: {
processListView.captureAnchor();
SysMonitorService.setSortBy("memory");
processListView.restoreAnchor();
}
}
@@ -173,9 +167,7 @@ Column {
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: {
processListView.captureAnchor();
SysMonitorService.setSortBy("pid");
processListView.restoreAnchor();
}
}
@@ -211,9 +203,7 @@ Column {
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: {
processListView.captureAnchor();
SysMonitorService.toggleSortOrder();
processListView.restoreAnchor();
}
}
@@ -228,101 +218,21 @@ Column {
}
ListView {
DankListView {
id: processListView
property real stableY: 0
property bool isUserScrolling: false
property bool isScrollBarDragging: false
property string keyRoleName: "pid"
property var _anchorKey: undefined
property real _anchorOffset: 0
function captureAnchor() {
const y = contentY + 1;
const idx = indexAt(0, y);
if (idx < 0 || !model || idx >= model.length)
return ;
_anchorKey = model[idx][keyRoleName];
const it = itemAtIndex(idx);
_anchorOffset = it ? (y - it.y) : 0;
}
function restoreAnchor() {
Qt.callLater(function() {
if (_anchorKey === undefined || !model)
return ;
var i = -1;
for (var j = 0; j < model.length; ++j) {
if (model[j][keyRoleName] === _anchorKey) {
i = j;
break;
}
}
if (i < 0)
return ;
positionViewAtIndex(i, ListView.Beginning);
const maxY = Math.max(0, contentHeight - height);
contentY = Math.max(0, Math.min(maxY, contentY + _anchorOffset - 1));
});
}
width: parent.width
height: parent.height - columnHeaders.height
clip: true
spacing: 4
model: SysMonitorService.processes
boundsBehavior: Flickable.StopAtBounds
// Qt 6.9+ scrolling: flickDeceleration/maximumFlickVelocity only affect touch now
interactive: true
flickDeceleration: 1500 // Touch only in Qt 6.9+ // Lower = more momentum, longer scrolling
maximumFlickVelocity: 2000 // Touch only in Qt 6.9+ // Higher = faster maximum scroll speed
boundsMovement: Flickable.FollowBoundsBehavior
pressDelay: 0
flickableDirection: Flickable.VerticalFlick
onMovementStarted: isUserScrolling = true
onMovementEnded: {
isUserScrolling = false;
if (contentY > 40)
stableY = contentY;
}
onContentYChanged: {
if (!isUserScrolling && !isScrollBarDragging && visible && stableY > 40 && Math.abs(contentY - stableY) > 10)
contentY = stableY;
}
onModelChanged: {
if (model && model.length > 0 && !isUserScrolling && stableY > 40)
Qt.callLater(function() {
contentY = stableY;
});
}
delegate: ProcessListItem {
process: modelData
contextMenu: root.contextMenu
}
ScrollBar.vertical: ScrollBar {
id: verticalScrollBar
policy: ScrollBar.AsNeeded
onPressedChanged: {
processListView.isScrollBarDragging = pressed;
if (!pressed && processListView.contentY > 40)
processListView.stableY = processListView.contentY;
}
}
ScrollBar.horizontal: ScrollBar {
policy: ScrollBar.AlwaysOff
}
}
}