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 "qgspainteffect.h"

class CORE_EXPORT QgsEffectStack : public QgsPaintEffect
{

  public:

    static QgsPaintEffect* create( const QgsStringMap& map );

    QgsEffectStack();
    QgsEffectStack( const QgsEffectStack& other );

    explicit QgsEffectStack( const QgsPaintEffect& effect );

    virtual ~QgsEffectStack();

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

    virtual QgsStringMap properties() const override;

    virtual void readProperties( const QgsStringMap& props ) override;

    void appendEffect( QgsPaintEffect* effect );

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

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

    QgsPaintEffect* takeEffect( const int index );

    QList< QgsPaintEffect* >* effectList();

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

    QgsPaintEffect* effect( int index ) const;

    QgsEffectStack& operator=( const QgsEffectStack& rhs );

  protected:

    virtual void draw( QgsRenderContext& context ) override;

  private:

    QList< QgsPaintEffect* > mEffectList;

    void clearStack();
};

#endif // QGSEFFECTSTACK_H