last 7 months of qs changes

modules/user/modules/quickshell/shell/components/FlickMonitor.qml

@@ -0,0 +1,90 @@
+import QtQuick
+import Quickshell
+
+Scope {
+	id: root
+
+	required property MouseArea target;
+
+	property real velocityX: 0;
+	property real velocityY: 0;
+
+	signal flickStarted();
+	signal flickCompleted();
+
+	property real dragStartX: 0;
+	property real dragStartY: 0;
+	property real dragDeltaX: 0;
+	property real dragDeltaY: 0;
+	property real dragEndX: 0;
+	property real dragEndY: 0;
+
+	property var sampleIdx: -1
+	property var tSamples: []
+	property var xSamples: []
+	property var ySamples: []
+
+	ElapsedTimer { id: velocityTimer }
+
+	function resetSamples() {
+		velocityTimer.restart();
+		sampleIdx = -1;
+		tSamples = [];
+		xSamples = [];
+		ySamples = [];
+	}
+
+	function sample() {
+		const deltaT = velocityTimer.elapsed();
+
+		sampleIdx++;
+		if (sampleIdx > 5) {
+			sampleIdx = 0;
+		}
+
+		tSamples[sampleIdx] = deltaT;
+		xSamples[sampleIdx] = dragDeltaX;
+		ySamples[sampleIdx] = dragDeltaY;
+	}
+
+	function updateVelocity() {
+		let firstIdx = sampleIdx + 1;
+		if (firstIdx > tSamples.length - 1) firstIdx = 0;
+
+		const deltaT = tSamples[sampleIdx] - tSamples[firstIdx];
+		const deltaX = xSamples[sampleIdx] - xSamples[firstIdx];
+		const deltaY = ySamples[sampleIdx] - ySamples[firstIdx];
+
+		root.velocityX = deltaX / deltaT;
+		root.velocityY = deltaY / deltaT;
+	}
+
+	Connections {
+		target: root.target;
+
+		function onPressed(event: MouseEvent) {
+			root.resetSamples();
+			root.dragDeltaX = 0;
+			root.dragDeltaY = 0;
+			root.dragStartX = event.x;
+			root.dragStartY = event.y;
+			root.flickStarted();
+		}
+
+		function onReleased(event: MouseEvent) {
+			root.dragDeltaX = event.x - root.dragStartX;
+			root.dragDeltaY = event.y - root.dragStartY;
+			root.dragEndX = event.x;
+			root.dragEndY = event.y;
+			root.sample();
+			root.updateVelocity();
+			root.flickCompleted();
+		}
+
+		function onPositionChanged(event: MouseEvent) {
+			root.dragDeltaX = event.x - root.dragStartX;
+			root.dragDeltaY = event.y - root.dragStartY;
+			root.sample();
+		}
+	}
+}