File indexing completed on 2024-05-12 15:56:38

 /*
  *  SPDX-FileCopyrightText: 2020 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 #ifndef KOACTIVECANVASRESOURCEDEPENDENCY_H
 #define KOACTIVECANVASRESOURCEDEPENDENCY_H
 
 #include <QScopedPointer>
 #include <QSharedPointer>
 #include "kritaflake_export.h"
 
 
 /**
  * @brief A representation of dependency between different canvas
  * resources stored in KoReosurceManager.
  *
  * A resource dependency looks like that
  *
  *     source ----->----- depends on ----->----- target
  *
  * , that is, when 'target' changes 'source' should be updated.
  */
 class KRITAFLAKE_EXPORT KoActiveCanvasResourceDependency
 {
 public:
     KoActiveCanvasResourceDependency(int sourceKey, int targetKey);
     virtual ~KoActiveCanvasResourceDependency();
 
     /**
      * @return the resource type that should be updated when targetKey() is changed
      */
     int sourceKey() const;
 
     /**
      * @return the resource type that should cause updates sourceKey()
      */
     int targetKey() const;
 
     /**
      * @return true if \p source does really depend on \p target and the
      * manager should emit notification about \p target's change
      */
     virtual bool shouldUpdateSource(QVariant &source, const QVariant &target) = 0;
 
 private:
     struct Private;
     const QScopedPointer<Private> m_d;
 };
 
 typedef QSharedPointer<KoActiveCanvasResourceDependency> KoActiveCanvasResourceDependencySP;
 
 #endif // KOACTIVECANVASRESOURCEDEPENDENCY_H