Qwt User's Guide 6.1.2

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qwt_matrix_raster_data.h
1 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10 #ifndef QWT_MATRIX_RASTER_DATA_H
11 #define QWT_MATRIX_RASTER_DATA_H 1
12
13 #include "qwt_global.h"
14 #include "qwt_raster_data.h"
15 #include <qvector.h>
16
25 class QWT_EXPORT QwtMatrixRasterData: public QwtRasterData
26 {
27 public:
32 enum ResampleMode
33 {
38 NearestNeighbour,
39
44 BilinearInterpolation
45 };
46
47 QwtMatrixRasterData();
48 virtual ~QwtMatrixRasterData();
49
50 void setResampleMode(ResampleMode mode);
51 ResampleMode resampleMode() const;
52
53 virtual void setInterval( Qt::Axis, const QwtInterval & );
54
55 void setValueMatrix( const QVector<double> &values, int numColumns );
56 const QVector<double> valueMatrix() const;
57
58 void setValue( int row, int col, double value );
59
60 int numColumns() const;
61 int numRows() const;
62
63 virtual QRectF pixelHint( const QRectF & ) const;
64
65 virtual double value( double x, double y ) const;
66
67 private:
68 void update();
69
70 class PrivateData;
71 PrivateData *d_data;
72 };
73
74 #endif
QwtRasterData::value
virtual double value(double x, double y) const =0
QwtRasterData
QwtRasterData defines an interface to any type of raster data.
Definition: qwt_raster_data.h:32
QwtRasterData::setInterval
virtual void setInterval(Qt::Axis, const QwtInterval &)
Definition: qwt_raster_data.cpp:176
QwtMatrixRasterData::ResampleMode
ResampleMode
Resampling algorithm The default setting is NearestNeighbour;.
Definition: qwt_matrix_raster_data.h:32
QwtRasterData::pixelHint
virtual QRectF pixelHint(const QRectF &) const
Pixel hint.
Definition: qwt_raster_data.cpp:242
QwtMatrixRasterData
A class representing a matrix of values as raster data.
Definition: qwt_matrix_raster_data.h:25
QwtInterval
A class representing an interval.
Definition: qwt_interval.h:26
QwtMatrixRasterData::NearestNeighbour
Definition: qwt_matrix_raster_data.h:38