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2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
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29
30// W A R N I N G
31// -------------
32//
33// This file is not part of the Qt Chart API. It exists purely as an
34// implementation detail. This header file may change from version to
35// version without notice, or even be removed.
36//
37// We mean it.
38
39#ifndef QXYMODELMAPPER_P_H
40#define QXYMODELMAPPER_P_H
41
42#include <QtCharts/QXYModelMapper>
43#include <QtCharts/private/qchartglobal_p.h>
44#include <QtCore/QObject>
45
46QT_BEGIN_NAMESPACE
47class QModelIndex;
48class QAbstractItemModel;
49class QPointF;
50QT_END_NAMESPACE
51
52QT_CHARTS_BEGIN_NAMESPACE
53
54class QXYModelMapper;
55class QXYSeries;
56
57class Q_CHARTS_PRIVATE_EXPORT QXYModelMapperPrivate : public QObject
58{
59 Q_OBJECT
60
61public:
62 QXYModelMapperPrivate(QXYModelMapper *q);
63
64public Q_SLOTS:
65 // for the model
66 void modelUpdated(QModelIndex topLeft, QModelIndex bottomRight);
67 void modelRowsAdded(QModelIndex parent, int start, int end);
68 void modelRowsRemoved(QModelIndex parent, int start, int end);
69 void modelColumnsAdded(QModelIndex parent, int start, int end);
70 void modelColumnsRemoved(QModelIndex parent, int start, int end);
71 void handleModelDestroyed();
72
73 // for the series
74 void handlePointAdded(int pointPos);
75 void handlePointRemoved(int pointPos);
76 void handlePointsRemoved(int pointPos, int count);
77 void handlePointReplaced(int pointPos);
78 void handleSeriesDestroyed();
79
80 void initializeXYFromModel();
81
82private:
83 QModelIndex xModelIndex(int xPos);
84 QModelIndex yModelIndex(int yPos);
85 void insertData(int start, int end);
86 void removeData(int start, int end);
87 void blockModelSignals(bool block = true);
88 void blockSeriesSignals(bool block = true);
89 qreal valueFromModel(QModelIndex index);
90 void setValueToModel(QModelIndex index, qreal value);
91
92private:
93 QXYSeries *m_series;
94 QAbstractItemModel *m_model;
95 int m_first;
96 int m_count;
97 Qt::Orientation m_orientation;
98 int m_xSection;
99 int m_ySection;
100 bool m_seriesSignalsBlock;
101 bool m_modelSignalsBlock;
102
103private:
104 QXYModelMapper *q_ptr;
105 Q_DECLARE_PUBLIC(QXYModelMapper)
106};
107
108QT_CHARTS_END_NAMESPACE
109
110#endif // QXYMODELMAPPER_P_H
111

source code of qtcharts/src/charts/xychart/qxymodelmapper_p.h