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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 QLEGEND_P_H
40#define QLEGEND_P_H
41
42#include <QtCharts/QLegend>
43#include <QtCharts/private/qchartglobal_p.h>
44
45QT_CHARTS_BEGIN_NAMESPACE
46
47class QChart;
48class ChartPresenter;
49class QAbstractSeries;
50class LegendLayout;
51class QLegendMarker;
52
53class Q_CHARTS_PRIVATE_EXPORT QLegendPrivate : public QObject
54{
55 Q_OBJECT
56public:
57 QLegendPrivate(ChartPresenter *presenter, QChart *chart, QLegend *q);
58 ~QLegendPrivate();
59
60 void setOffset(const QPointF &offset);
61 QPointF offset() const;
62 int roundness(qreal size);
63
64 QGraphicsItemGroup* items() { return m_items; }
65
66 QList<QLegendMarker*> markers(QAbstractSeries *series = 0);
67 qreal maxMarkerWidth() const;
68
69 static QObject *relatedObject(const QLegendMarker *l);
70
71public Q_SLOTS:
72 void handleSeriesAdded(QAbstractSeries *series);
73 void handleSeriesRemoved(QAbstractSeries *series);
74 void handleSeriesVisibleChanged();
75 void handleCountChanged();
76
77private:
78 // Internal helpers
79 void insertMarkerHelper(QLegendMarker *marker);
80 void addMarkers(QList<QLegendMarker *> markers);
81 void removeMarkerHelper(QLegendMarker *marker);
82 void removeMarkers(QList<QLegendMarker *> markers);
83 void decorateMarker(QLegendMarker *marker);
84 void decorateMarkers(QList<QLegendMarker *> markers);
85 void updateToolTips();
86
87private:
88 QLegend *q_ptr;
89 ChartPresenter *m_presenter;
90 LegendLayout *m_layout;
91 QChart *m_chart;
92 QGraphicsItemGroup *m_items;
93 Qt::Alignment m_alignment;
94 QBrush m_brush;
95 QPen m_pen;
96 QFont m_font;
97 QBrush m_labelBrush;
98
99 qreal m_diameter;
100 bool m_attachedToChart;
101 bool m_backgroundVisible;
102 bool m_reverseMarkers;
103 bool m_showToolTips;
104 QLegend::MarkerShape m_markerShape;
105
106 QList<QLegendMarker *> m_markers;
107 QList<QAbstractSeries *> m_series;
108
109 QHash<QGraphicsItem *, QLegendMarker *> m_markerHash;
110
111 friend class QLegend;
112 friend class LegendMarkerItem;
113 friend class LegendLayout;
114 friend class QLegendMarkerPrivate;
115 friend class LegendScroller;
116};
117
118QT_CHARTS_END_NAMESPACE
119
120#endif
121

source code of qtcharts/src/charts/legend/qlegend_p.h