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6** This file is part of the Qt Charts module of the Qt Toolkit.
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29
30
31#ifndef CHARTS_H
32#define CHARTS_H
33#include "model.h"
34#include <QtCore/QList>
35#include <QtCore/QString>
36#include <QtCore/QSharedPointer>
37#include <QtCharts/QChartGlobal>
38
39QT_CHARTS_BEGIN_NAMESPACE
40class QChart;
41QT_CHARTS_END_NAMESPACE
42
43QT_CHARTS_USE_NAMESPACE
44
45class Chart
46{
47public:
48 virtual ~Chart() {};
49 virtual QChart *createChart(const DataTable &table) = 0;
50 virtual QString name() = 0;
51 virtual QString category() = 0;
52 virtual QString subCategory() = 0;
53
54};
55
56namespace Charts
57{
58
59 typedef QList<Chart *> ChartList;
60
61 inline ChartList &chartList()
62 {
63 static ChartList list;
64 return list;
65 }
66
67 inline bool findChart(Chart *chart)
68 {
69 ChartList &list = chartList();
70 if (list.contains(t: chart))
71 return true;
72
73 foreach (Chart *item, list) {
74 if (item->name() == chart->name() && item->category() == chart->category() && item->subCategory() == chart->subCategory())
75 return true;
76 }
77 return false;
78 }
79
80 inline void addChart(Chart *chart)
81 {
82 ChartList &list = chartList();
83 if (!findChart(chart))
84 list.append(t: chart);
85 }
86}
87
88template <class T>
89class ChartWrapper
90{
91public:
92 QSharedPointer<T> chart;
93 ChartWrapper() : chart(new T) { Charts::addChart(chart: chart.data()); }
94};
95
96#define DECLARE_CHART(chartType) static ChartWrapper<chartType> chartType;
97#define DECLARE_CHART_TEMPLATE(chartType,chartName) static ChartWrapper<chartType> chartName;
98
99#endif
100

source code of qtcharts/tests/manual/chartviewer/charts.h