KChart

KChartPolarDiagram.h
1/*
2 * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
3 *
4 * This file is part of the KD Chart library.
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8
9#ifndef KCHARTPOLARDIAGRAM_H
10#define KCHARTPOLARDIAGRAM_H
11
12
13#include "KChartPosition.h"
14#include "KChartAbstractPolarDiagram.h"
15
16QT_BEGIN_NAMESPACE
17class QPolygonF;
18QT_END_NAMESPACE
19
20namespace KChart {
21
22/**
23 * @brief PolarDiagram defines a common polar diagram
24 */
25class KCHART_EXPORT PolarDiagram : public AbstractPolarDiagram
26{
27 Q_OBJECT
28
29 Q_DISABLE_COPY( PolarDiagram )
30 KCHART_DECLARE_DERIVED_DIAGRAM( PolarDiagram, PolarCoordinatePlane )
31
32public:
33 explicit PolarDiagram(
34 QWidget* parent = nullptr, PolarCoordinatePlane* plane = nullptr );
35 ~PolarDiagram() override;
36
37protected:
38 // Implement AbstractDiagram
39 /** \reimpl */
40 void paint ( PaintContext* paintContext ) override;
41
42public:
43 /** \reimpl */
44 void resize ( const QSizeF& area ) override;
45
46 // Implement AbstractPolarDiagram
47 /** \reimpl */
48 qreal valueTotals () const override;
49 /** \reimpl */
50 qreal numberOfValuesPerDataset() const override;
51 /** \reimpl */
52 qreal numberOfGridRings() const override;
53
54
55 /**
56 * Creates an exact copy of this diagram.
57 */
58 virtual PolarDiagram * clone() const;
59
60 /** \deprecated Use PolarCoordinatePlane::setStartPosition( qreal degrees ) instead. */
61 void setZeroDegreePosition( int degrees );
62 /** \deprecated Use qreal PolarCoordinatePlane::startPosition instead. */
63 int zeroDegreePosition() const;
64
65 void setRotateCircularLabels( bool rotateCircularLabels );
66 bool rotateCircularLabels() const;
67
68 /** Close each of the data series by connecting the last point to its
69 * respective start point
70 */
71 void setCloseDatasets( bool closeDatasets );
72 bool closeDatasets() const;
73
74 void setShowDelimitersAtPosition( Position position,
75 bool showDelimiters );
76 void setShowLabelsAtPosition( Position position,
77 bool showLabels );
78
79 bool showDelimitersAtPosition( Position position ) const;
80
81 bool showLabelsAtPosition( Position position ) const;
82
83 virtual void paint ( PaintContext* paintContext,
84 bool calculateListAndReturnScale,
85 qreal& newZoomX, qreal& newZoomY ); // KChart 3: references -> pointers
86
87protected:
88 /** \reimpl */
89 const QPair<QPointF, QPointF> calculateDataBoundaries() const override;
90 void paintEvent ( QPaintEvent* ) override;
91 void resizeEvent ( QResizeEvent* ) override;
92 virtual void paintPolarMarkers( PaintContext* ctx, const QPolygonF& polygon );
93
94}; // End of class PolarDiagram
95
96}
97
98
99#endif // KCHARTPOLARDIAGRAM_H
Base class for diagrams based on a polar coordinate system.
Stores information about painting diagrams.
PolarDiagram defines a common polar diagram.
Defines a position, using compass terminology.
This file is part of the KDE documentation.
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