image/commands/kis_node_opacity_command.h

0001 /*
0002  *  SPDX-FileCopyrightText: 2002 Patrick Julien <freak@codepimps.org>
0003  *  SPDX-FileCopyrightText: 2005 C. Boemann <cbo@boemann.dk>
0004  *
0005  *  SPDX-License-Identifier: GPL-2.0-or-later
0006  */
0007 #ifndef KIS_NODE_OPACITY_COMMAND_H
0008 #define KIS_NODE_OPACITY_COMMAND_H
0009
0010 #include "kis_node_command.h"
0011 #include "commands_new/KisAsynchronouslyMergeableCommandInterface.h"
0012 #include "boost/optional.hpp"
0013
0014 /// The command for setting the node opacity
0015 class KRITAIMAGE_EXPORT KisNodeOpacityCommand : public KisNodeCommand, public KisAsynchronouslyMergeableCommandInterface
0016 {
0017
0018 public:
0019     /**
0020      * Constructor
0021      * @param node The node the command will be working on.
0022      * @param oldOpacity the old node opacity
0023      * @param newOpacity the new node opacity
0024      */
0025     KisNodeOpacityCommand(KisNodeSP node, quint8 newOpacity);
0026
0027     void redo() override;
0028     void undo() override;
0029
0030     int id() const override;
0031     bool mergeWith(const KUndo2Command *command) override;
0032     bool canMergeWith(const KUndo2Command *command) const override;
0033     bool canAnnihilateWith(const KUndo2Command *command) const override;
0034
0035 private:
0036     boost::optional<quint8> m_oldOpacity;
0037     QScopedPointer<KUndo2Command> m_autokey;
0038     quint8 m_newOpacity;
0039 };
0040
0041 #endif /* KIS_NODE_OPACITY_COMMAND_H */