ChartViewSelector.qml Example File | Qt Charts 5.12.8

- Qt 5.12
- Qt Charts
- Qml Custom Legend
- ChartViewSelector.qml Example File
- Qt Charts | Commercial or GPLv3

# ChartViewSelector.qml Example File

qmlcustomlegend/qml/qmlcustomlegend/ChartViewSelector.qml

     /****************************************************************************
     **
     ** 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
     ** Licensees holding valid commercial Qt licenses may use this file in
     ** accordance with the commercial license agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
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     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3 or (at your option) any later version
     ** approved by the KDE Free Qt Foundation. The licenses are as published by
     ** the Free Software Foundation and appearing in the file LICENSE.GPL3
     ** included in the packaging of this file. Please review the following
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     import QtQuick 2.0
     import QtCharts 2.0

     Item {
         id: chartViewSelector
         width: parent.width
         height: parent.height
         signal seriesAdded(string seriesName, color seriesColor)

         function highlightSeries(seriesName) {
             if (seriesName == "") {
                 if (state != "")
                     state = "";

                 for (var i = 0; i < chartViewStacked.count; i++)
                     chartViewStacked.series(i).opacity = 1.0;
             } else {
                 var targetOpacity = 0.1;
                 for (var j = 0; j < chartViewStacked.count; j++) {
                     if (chartViewStacked.series(j).name != seriesName)
                         chartViewStacked.series(j).opacity = 0.25;
                     else if (state == "highlight")
                         chartViewSelected.selectedSeries = chartViewStacked.series(j);
                 }
             }
         }

         function selectSeries(seriesName) {
             for (var i = 0; i < chartViewStacked.count; i++) {
                 if (chartViewStacked.series(i).name == seriesName) {
                     chartViewSelected.selectedSeries = chartViewStacked.series(i);
                     if (chartViewSelector.state == "")
                         chartViewSelector.state = "highlighted";
                     else
                         chartViewSelector.state = "";
                 }
             }
         }

         ChartViewStacked {
             id: chartViewStacked
             anchors.left: parent.left
             anchors.leftMargin: 0
             width: parent.width
             height: parent.height
             onSeriesAdded: chartViewSelector.seriesAdded(series.name, series.color);
         }

         ChartViewHighlighted {
             id: chartViewSelected
             anchors.left: chartViewStacked.right
             width: parent.width
             height: parent.height

             opacity: 0.0
             onClicked: {
                 chartViewSelector.state = "";
             }
         }

         states: State {
             name: "highlighted"
             PropertyChanges {
                 target: chartViewSelected
                 opacity: 1.0
             }
             PropertyChanges {
                 target: chartViewStacked
                 anchors.leftMargin: -chartViewStacked.width
                 opacity: 0.0
             }
         }

         transitions: Transition {
             PropertyAnimation {
                 properties: "width, height, opacity, anchors.leftMargin"
                 duration: 400
             }
         }
     }