qgscoloreffect.h

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/***************************************************************************
                             qgscoloreffect.h
                             ----------------
    begin                : March 2015
    copyright            : (C) 2015 Nyall Dawson
    email                : nyall dot dawson at gmail dot com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 QGSCOLOREFFECT_H
#define QGSCOLOREFFECT_H

#include "qgis_core.h"
#include "qgspainteffect.h"
#include "qgsimageoperation.h"
#include "qgis.h"
#include <QPainter>

class CORE_EXPORT QgsColorEffect : public QgsPaintEffect
{

  public:

    static QgsPaintEffect *create( const QgsStringMap &map ) SIP_FACTORY;

    QgsColorEffect();

    QString type() const override { return QStringLiteral( "color" ); }
    QgsStringMap properties() const override;
    void readProperties( const QgsStringMap &props ) override;
    QgsColorEffect *clone() const override SIP_FACTORY;

    void setBrightness( int brightness ) { mBrightness = qBound( -255, brightness, 255 ); }

    int brightness() const { return mBrightness; }

    void setContrast( int contrast ) { mContrast = qBound( -100, contrast, 100 ); }

    int contrast() const { return mContrast; }

    void setSaturation( double saturation ) { mSaturation = saturation; }

    double saturation() const { return mSaturation; }

    void setGrayscaleMode( QgsImageOperation::GrayscaleMode grayscaleMode ) { mGrayscaleMode = grayscaleMode; }

    QgsImageOperation::GrayscaleMode grayscaleMode() const { return mGrayscaleMode; }

    void setColorizeOn( bool colorizeOn ) { mColorizeOn = colorizeOn; }

    bool colorizeOn() const { return mColorizeOn; }

    void setColorizeColor( const QColor &colorizeColor );

    QColor colorizeColor() const { return mColorizeColor; }

    void setColorizeStrength( int colorizeStrength ) { mColorizeStrength = colorizeStrength; }

    int colorizeStrength() const { return mColorizeStrength; }

    void setOpacity( const double opacity ) { mOpacity = opacity; }

    double opacity() const { return mOpacity; }

    void setBlendMode( const QPainter::CompositionMode mode ) { mBlendMode = mode; }

    QPainter::CompositionMode blendMode() const { return mBlendMode; }

  protected:

    void draw( QgsRenderContext &context ) override;

  private:

    double mOpacity = 1.0;
    QPainter::CompositionMode mBlendMode = QPainter::CompositionMode_SourceOver;
    int mBrightness = 0;
    int mContrast = 0;
    double mSaturation = 1.0;
    QgsImageOperation::GrayscaleMode mGrayscaleMode = QgsImageOperation::GrayscaleOff;
    bool mColorizeOn = false;
    QColor mColorizeColor;
    int mColorizeStrength = 100;
};

#endif // QGSBLUREFFECT_H