/usr/include/qwt/qwt_matrix_raster_data.h is in libqwt-dev 6.0.0-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#ifndef QWT_MATRIX_RASTER_DATA_H
#define QWT_MATRIX_RASTER_DATA_H 1
#include "qwt_global.h"
#include "qwt_raster_data.h"
#include <qvector.h>
/*!
\brief A class representing a matrix of values as raster data
QwtMatrixRasterData implements an interface for a matrix of
equidistant values, that can be used by a QwtPlotRasterItem.
It implements a couple of resampling algorithms, to provide
values for positions, that or not on the value matrix.
*/
class QWT_EXPORT QwtMatrixRasterData: public QwtRasterData
{
public:
/*!
\brief Resampling algorithm
The default setting is NearestNeighbour;
*/
enum ResampleMode
{
/*!
Return the value from the matrix, that is nearest to the
the requested position.
*/
NearestNeighbour,
/*!
Interpolate the value from the distances and values of the
4 surrounding values in the matrix,
*/
BilinearInterpolation
};
QwtMatrixRasterData();
virtual ~QwtMatrixRasterData();
void setResampleMode(ResampleMode mode);
ResampleMode resampleMode() const;
virtual void setInterval( Qt::Axis, const QwtInterval & );
void setValueMatrix( const QVector<double> &values, size_t numColumns );
const QVector<double> valueMatrix() const;
size_t numColumns() const;
size_t numRows() const;
virtual QRectF pixelHint( const QRectF & ) const;
virtual double value( double x, double y ) const;
private:
void update();
class PrivateData;
PrivateData *d_data;
};
#endif
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