source: ntrip/trunk/BNC/qwtpolar/qwt_polar_spectrogram.h@ 8983

Last change on this file since 8983 was 8127, checked in by stoecker, 7 years ago

update qwt and qwtpolar, many QT5 fixes (unfinished)

File size: 2.6 KB
Line 
1/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * QwtPolar Widget Library
3 * Copyright (C) 2008 Uwe Rathmann
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the Qwt License, Version 1.0
7 *****************************************************************************/
8
9#ifndef QWT_POLAR_SPECTROGRAM_H
10#define QWT_POLAR_SPECTROGRAM_H
11
12#include "qwt_polar_global.h"
13#include "qwt_polar_item.h"
14#include <qimage.h>
15
16class QwtRasterData;
17class QwtColorMap;
18
19/*!
20 \brief An item, which displays a spectrogram
21
22 A spectrogram displays threedimenional data, where the 3rd dimension
23 ( the intensity ) is displayed using colors. The colors are calculated
24 from the values using a color map.
25
26 \sa QwtRasterData, QwtColorMap
27*/
28class QWT_POLAR_EXPORT QwtPolarSpectrogram: public QwtPolarItem
29{
30public:
31 /*!
32 Attributes to modify the drawing algorithm.
33 The default setting disables ApproximatedAtan
34
35 \sa setPaintAttribute(), testPaintAttribute()
36 */
37 enum PaintAttribute
38 {
39 /*!
40 Use qwtFastAtan2 instead of atan2 for translating
41 widget into polar coordinates.
42 */
43
44 ApproximatedAtan = 0x01
45 };
46
47 //! Paint attributes
48 typedef QFlags<PaintAttribute> PaintAttributes;
49
50 explicit QwtPolarSpectrogram();
51 virtual ~QwtPolarSpectrogram();
52
53 void setData( QwtRasterData *data );
54 const QwtRasterData *data() const;
55
56 void setColorMap( QwtColorMap * );
57 const QwtColorMap *colorMap() const;
58
59 void setPaintAttribute( PaintAttribute, bool on = true );
60 bool testPaintAttribute( PaintAttribute ) const;
61
62 virtual int rtti() const;
63
64 virtual void draw( QPainter *painter,
65 const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap,
66 const QPointF &pole, double radius,
67 const QRectF &canvasRect ) const;
68
69 virtual QwtInterval boundingInterval( int scaleId ) const;
70
71protected:
72 virtual QImage renderImage(
73 const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap,
74 const QPointF &pole, const QRect &rect ) const;
75
76 virtual void renderTile(
77 const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap,
78 const QPointF &pole, const QPoint &imagePos,
79 const QRect &tile, QImage *image ) const;
80
81private:
82 class TileInfo;
83 void renderTile( const QwtScaleMap &, const QwtScaleMap &,
84 const QPointF &pole, TileInfo * ) const;
85
86 class PrivateData;
87 PrivateData *d_data;
88};
89
90Q_DECLARE_OPERATORS_FOR_FLAGS( QwtPolarSpectrogram::PaintAttributes )
91
92#endif
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