qgseffectstack.h

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/***************************************************************************
                             qgseffectstack.h
                             ----------------
    begin                : December 2014
    copyright            : (C) 2014 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 QGSEFFECTSTACK_H
#define QGSEFFECTSTACK_H

#include "qgis_core.h"
#include "qgis.h"
#include "qgspainteffect.h"

class CORE_EXPORT QgsEffectStack : public QgsPaintEffect
{

  public:

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

    QgsEffectStack() = default;

    QgsEffectStack( const QgsEffectStack &other );

    explicit QgsEffectStack( const QgsPaintEffect &effect );

    ~QgsEffectStack() override;

    QString type() const override { return QStringLiteral( "effectStack" ); }
    QgsEffectStack *clone() const override SIP_FACTORY;
    bool saveProperties( QDomDocument &doc, QDomElement &element ) const override;
    bool readProperties( const QDomElement &element ) override;

    QgsStringMap properties() const override;

    void readProperties( const QgsStringMap &props ) override;

    void appendEffect( QgsPaintEffect *effect SIP_TRANSFER );

    bool insertEffect( const int index, QgsPaintEffect *effect SIP_TRANSFER );

    bool changeEffect( const int index, QgsPaintEffect *effect SIP_TRANSFER );

    QgsPaintEffect *takeEffect( const int index SIP_TRANSFERBACK );

    QList< QgsPaintEffect * > *effectList();

    int count() const { return mEffectList.count(); }

    QgsPaintEffect *effect( int index ) const;

    QgsEffectStack &operator=( const QgsEffectStack &rhs );

  protected:

    void draw( QgsRenderContext &context ) override;

  private:

    QList< QgsPaintEffect * > mEffectList;

    void clearStack();
};

#endif // QGSEFFECTSTACK_H