qgsprojectstylealgorithms.h

Go to the documentation of this file.

/***************************************************************************
                         qgsprojectstylealgorithms.h
                         ---------------------
    begin                : July 2019
    copyright            : (C) 2019 by 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 QGSPROJECTSTYLESALGORITHMS_H
#define QGSPROJECTSTYLESALGORITHMS_H
 
#define SIP_NO_FILE
 
#include "qgis_sip.h"
#include "qgis_analysis.h"
#include "qgsprocessingalgorithm.h"
#include "qgsstyle.h"
#include "qgsstyleentityvisitor.h"
 
 
class ANALYSIS_EXPORT QgsSaveToStyleVisitor : public QgsStyleEntityVisitorInterface
{
  public:
 
    QgsSaveToStyleVisitor( QgsStyle *style, const QList< QgsStyle::StyleEntity > &objects = QList< QgsStyle::StyleEntity >() );
 
    bool visit( const QgsStyleEntityVisitorInterface::StyleLeaf &entity ) override;
    bool visitEnter( const QgsStyleEntityVisitorInterface::Node &node ) override;
    bool visitExit( const QgsStyleEntityVisitorInterface::Node &node ) override;
 
  private:
 
    QgsStyle *mStyle = nullptr;
    QList< QgsStyle::StyleEntity > mObjects;
    QStringList mParentNames;
 
};
 
class QgsStyleFromProjectAlgorithm : public QgsProcessingAlgorithm
{
 
  public:
 
    QgsStyleFromProjectAlgorithm();
    ~QgsStyleFromProjectAlgorithm() override;
    void initAlgorithm( const QVariantMap &configuration = QVariantMap() ) override;
    QString name() const override;
    QString displayName() const override;
    QStringList tags() const override;
    QString group() const override;
    QString groupId() const override;
    QString shortHelpString() const override;
    QString shortDescription() const override;
    QgsStyleFromProjectAlgorithm *createInstance() const override SIP_FACTORY;
 
  protected:
 
    bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
    QVariantMap processAlgorithm( const QVariantMap &parameters,
                                  QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
 
  private:
 
    QString mProjectPath;
    QList< QgsStyle::StyleEntity > mObjects;
    std::unique_ptr< QgsStyle > mStyle;
};
 
 
#endif // QGSPROJECTSTYLESALGORITHMS_H