qgsrastertransparency.h

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/* **************************************************************************
                qgsrastertransparency.h -  description
                       -------------------
begin                : Mon Nov 30 2007
copyright            : (C) 2007 by Peter J. Ersts
email                : [email protected]
 
****************************************************************************/
 
/* **************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef QGSRASTERTRANSPARENCY_H
#define QGSRASTERTRANSPARENCY_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgis.h"
#include <QList>
class QDomDocument;
class QDomElement;
 
class CORE_EXPORT QgsRasterTransparency
{
 
  public:
 
    QgsRasterTransparency() = default;
 
    struct TransparentThreeValuePixel
    {
 
      TransparentThreeValuePixel( double red = 0, double green = 0, double blue = 0, double opacity = 0 )
        : red( red )
        , green( green )
        , blue( blue )
        , opacity( opacity )
      {}
 
      double red;
 
      double green;
 
      double blue;
 
      double opacity = 0;
 
      bool operator==( const QgsRasterTransparency::TransparentThreeValuePixel &other ) const
      {
        return qgsDoubleNear( red, other.red )
               && qgsDoubleNear( green, other.green )
               && qgsDoubleNear( blue, other.blue )
               && qgsDoubleNear( opacity, other.opacity );
      }
      bool operator!=( const QgsRasterTransparency::TransparentThreeValuePixel &other ) const
      {
        return !( *this == other );
      }
 
#ifdef SIP_RUN
      SIP_PYOBJECT __repr__();
      % MethodCode
      const QString str = QStringLiteral( "<QgsRasterTransparency.TransparentThreeValuePixel: %1, %2, %3, %4>" ).arg( sipCpp->red ).arg( sipCpp->green ).arg( sipCpp->blue ).arg( sipCpp->opacity );
      sipRes = PyUnicode_FromString( str.toUtf8().constData() );
      % End
#endif
    };
 
    struct TransparentSingleValuePixel
    {
 
      TransparentSingleValuePixel( double minimum = 0, double maximum = 0, double opacity = 0, bool includeMinimum = true, bool includeMaximum = true )
        : min( minimum )
        , max( maximum )
        , opacity( opacity )
        , includeMinimum( includeMinimum )
        , includeMaximum( includeMaximum )
      {}
 
      double min;
 
      double max;
 
      double opacity = 0;
 
      bool includeMinimum = true;
 
      bool includeMaximum = true;
 
      bool operator==( const QgsRasterTransparency::TransparentSingleValuePixel &other ) const
      {
        return qgsDoubleNear( min, other.min )
               && qgsDoubleNear( max, other.max )
               && qgsDoubleNear( opacity, other.opacity )
               && includeMinimum == other.includeMinimum && includeMaximum == other.includeMaximum;
      }
      bool operator!=( const QgsRasterTransparency::TransparentSingleValuePixel &other ) const
      {
        return !( *this == other );
      }
 
#ifdef SIP_RUN
      SIP_PYOBJECT __repr__();
      % MethodCode
      const QString str = QStringLiteral( "<QgsRasterTransparency.TransparentSingleValuePixel: %1, %2, %3>" ).arg( sipCpp->min ).arg( sipCpp->max ).arg( sipCpp->opacity );
      sipRes = PyUnicode_FromString( str.toUtf8().constData() );
      % End
#endif
    };
 
    QVector<QgsRasterTransparency::TransparentSingleValuePixel> transparentSingleValuePixelList() const;
 
    QVector<QgsRasterTransparency::TransparentThreeValuePixel> transparentThreeValuePixelList() const;
 
    void initializeTransparentPixelList( double value );
 
    void initializeTransparentPixelList( double redValue, double greenValue, double blueValue );
 
    void setTransparentSingleValuePixelList( const QVector<QgsRasterTransparency::TransparentSingleValuePixel> &newList );
 
    void setTransparentThreeValuePixelList( const QVector<QgsRasterTransparency::TransparentThreeValuePixel> &newList );
 
    Q_DECL_DEPRECATED int alphaValue( double value, int globalTransparency = 255 ) const SIP_DEPRECATED;
 
    double opacityForValue( double value ) const;
 
    Q_DECL_DEPRECATED int alphaValue( double redValue, double greenValue, double blueValue, int globalTransparency = 255 ) const SIP_DEPRECATED;
 
    double opacityForRgbValues( double redValue, double greenValue, double blueValue ) const;
 
    bool isEmpty() const;
 
    void writeXml( QDomDocument &doc, QDomElement &parentElem ) const;
 
    void readXml( const QDomElement &elem );
 
  private:
    QVector<QgsRasterTransparency::TransparentThreeValuePixel> mTransparentThreeValuePixelList;
 
    QVector<QgsRasterTransparency::TransparentSingleValuePixel> mTransparentSingleValuePixelList;
 
};
#endif