How disable drag of points in the x axis on chartview

I have a qtchart with a lineseries with 5 points on the graph. I can drag these points on in both x and y axis inside min and max of axisX and axisY.
How can disable drag of points in the x axis? so it is possible to drag points vertically on the chart. Here is my code:ChartView { id: chart property var selectedPoint: undefined anchors.fill: parent antialiasing: true property real toleranceX: 0.05 property real toleranceY: 0.05 ValueAxis { id: axisX min: 0 max: 5 } ValueAxis { id: axisY min: 10 max: 10 } LineSeries { id: series1 axisX: axisX axisY: axisY pointsVisible: true } MouseArea { anchors.fill: parent onPressed: { var cp = chart.mapToValue(Qt.point(mouse.x,mouse.y)); for(var i = 0;i < series1.count;i ++) { var p = series1.at(i); if(Math.abs(cp.x  p.x) <= chart.toleranceX && Math.abs(cp.y  p.y) <= chart.toleranceY) { chart.selectedPoint = p; break; } } } onPositionChanged: { if(chart.selectedPoint != undefined) { var p = Qt.point(mouse.x, mouse.y); var cp = chart.mapToValue(p); if(cp.x >= axisX.min && cp.x <= axisX.max && cp.y >= axisY.min && cp.y <= axisY.max) { series1.replace(chart.selectedPoint.x, chart.selectedPoint.y, cp.x, cp.y); chart.selectedPoint = cp; } } } onReleased: { chart.selectedPoint = undefined; } } } // Add data to the series Component.onCompleted: { for (var i = 0; i <= 5; i++) { series1.append(i, Math.random()); } }
So far I could disable drag on x axis for one point in this case point on 3 by changing
onPositionChanged
to following code but there are two problems, first this is just one point, second, it does not disable the drag completely instead the point can be dragged on x axis between 2 to 4 but it cannot be dragged outside this range.onPositionChanged: { if(chart.selectedPoint != undefined) { var p = Qt.point(mouse.x, mouse.y); var cp = chart.mapToValue(p); if(cp.x >= axisX.min && cp.x <= axisX.max && cp.y >= axisY.min && cp.y <= axisY.max) { if (Math.round(cp.x) == 3){ series1.replace(chart.selectedPoint.x, chart.selectedPoint.y, cp.x, cp.y); chart.selectedPoint = cp; } } } }