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ChartView and scrollbar

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  • S Offline
    S Offline
    SeeLook
    wrote on 26 Dec 2016, 14:51 last edited by
    #1

    Hi
    I couldn't find it in any doc.

    How to make ChartView scrollable with mouse (finger) when appended data goes out of defined X axis maximum?

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    0
    • V Offline
      V Offline
      vladstelmahovsky
      wrote on 27 Dec 2016, 09:02 last edited by
      #2

      Have you tried to put it into Flickable {} ?

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      • S Offline
        S Offline
        SeeLook
        wrote on 27 Dec 2016, 11:17 last edited by
        #3

        Thanks for clue, but seems like ChartView has fixed size.
        I added MouseArea to handle it - it works like dragging

        ChartView {
            id: chartView
            MouseArea {
                anchors.fill: parent
                property int lastX: 0
                property int lastY: 0
                onPressed: {
                    lastX = mouse.x
                    lastY = mouse.y
                }
        
                onPositionChanged: {
                    if (lastX !== mouse.x) {
                        chartView.scrollRight(lastX - mouse.x)
                        lastX = mouse.x
                    }
                    if (lastY !== mouse.y) {
                        chartView.scrollDown(lastY - mouse.y)
                        lastY = mouse.y
                    }
                }
            }
        }
        
        
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        • V Offline
          V Offline
          vorlket
          wrote on 13 Jan 2017, 04:37 last edited by
          #4

          Have you tried qchart with graphicsview framework?

          S 1 Reply Last reply 13 Jan 2017, 08:15
          0
          • V vorlket
            13 Jan 2017, 04:37

            Have you tried qchart with graphicsview framework?

            S Offline
            S Offline
            SeeLook
            wrote on 13 Jan 2017, 08:15 last edited by
            #5

            Yes, in another project.
            QGraphicsView lays a top of QAbstaractScrollArea, so scroll bars appears there out of a box. But it requires a few lines of code to add scrolling by drag a scene.
            This time I needed QML way.

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