Touch in QML chartview
Unsolved
QML and Qt Quick
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I have created a QML chart with code
ChartView { id: chart anchors.fill: parent antialiasing: true ValueAxis { id: axisY tickCount: 3 } DateTimeAxis{ id: xTime gridVisible: false } ToolTip { id: id_toolTip contentItem: Text{ color: "#21be2b" } background: Rectangle { border.color: "#21be2b" } } SplineSeries{ id: chartseries pointsVisible: true pointLabelsVisible: false useOpenGL: true axisX: xTime axisY: axisY onClicked: { id_toolTip.text = "dd" id_toolTip.visible = true; } } }
But tooltip is not showing on all touches . Sometimes it shows . Sometimes it did not. What will be the cause
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@Refi
That is probably due to the hotspot of the touch not being exactly on the graph sometimes...One obvious way to improve this is to increase the width of your graph lines, but that may not be too pretty.
Another way is to determine the closest point on your graph using some code computations.
My idiot's solutions is this: superimpose the same series, make its color "transparent" but give it a sufficiently wide line thickness and put the click handler there...
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@Diracsbracket
I think this is a good Idea . Will try this.
Is there any to put tooltips only on graph points after makingpointsVisible : true