Qt 5.9 | Qt Charts | Qml Custom Legend | ChartViewHighlighted.qml Example File

Qt 5.9.3 Reference Documentation

# ChartViewHighlighted.qml Example File

qmlcustomlegend/qml/qmlcustomlegend/ChartViewHighlighted.qml

      /****************************************************************************
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      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the Qt Charts module of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:GPL$
      ** Commercial License Usage
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      import QtQuick 2.0
      import QtCharts 2.0

      ChartView {
          id: chartViewHighlighted
          title: ""
          property variant selectedSeries
          signal clicked
          legend.visible: false
          margins.top: 10
          margins.bottom: 0
          antialiasing: true

          LineSeries {
              id: lineSeries

              axisX: ValueAxis {
                  min: 2006
                  max: 2012
                  labelFormat: "%.0f"
                  tickCount: 7
              }
              axisY: ValueAxis {
                  id: axisY
                  titleText: "EUR"
                  min: 0
                  max: 40000
                  labelFormat: "%.0f"
                  tickCount: 5
              }
          }

          MouseArea {
              anchors.fill: parent
              onClicked: {
                  chartViewHighlighted.clicked();
              }
          }

          onSelectedSeriesChanged: {
              lineSeries.clear();
              lineSeries.color = selectedSeries.color;
              var maxVal = 0.0;
              for (var i = 0; i < selectedSeries.upperSeries.count; i++ ) {
                  var y = selectedSeries.upperSeries.at(i).y - selectedSeries.lowerSeries.at(i).y;
                  lineSeries.append(selectedSeries.upperSeries.at(i).x, y);
                  if (maxVal < y)
                      maxVal = y;
              }
              chartViewHighlighted.title = selectedSeries.name;
              axisY.max = maxVal;
              axisY.applyNiceNumbers()
          }
      }