kis_merge_walker.h

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/*
 *  SPDX-FileCopyrightText: 2009 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef __KIS_MERGE_WALKER_H
#define __KIS_MERGE_WALKER_H
 
#include "kis_types.h"
#include "kis_base_rects_walker.h"
 
class KisMergeWalker;
typedef KisSharedPtr<KisMergeWalker> KisMergeWalkerSP;
 
class KRITAIMAGE_EXPORT KisMergeWalker : public virtual KisBaseRectsWalker
{
 
public:
    enum Flag {
        DEFAULT = 0,
        NO_FILTHY = 0x1,
        CLONES_DONT_INVALIDATE_FRAMES = 0x2
    };
 
    Q_DECLARE_FLAGS(Flags, Flag)
 
    KisMergeWalker(QRect cropRect, Flags flags = DEFAULT);
 
    ~KisMergeWalker() override;
 
    UpdateType type() const override;
 
protected:
    KisMergeWalker() : m_flags(DEFAULT) {}
    KisMergeWalker(Flags flags) : m_flags(flags) {}
 
    void startTrip(KisProjectionLeafSP startWith) override;
 
    using KisBaseRectsWalker::startTrip;
 
    void startTripWithMask(KisProjectionLeafSP filthyMask, KisMergeWalker::Flags flags);
 
private:
    void startTripImpl(KisProjectionLeafSP startLeaf, Flags flags);
 
private:
    void visitHigherNode(KisProjectionLeafSP leaf, NodePosition positionToFilthy);
 
    void visitLowerNode(KisProjectionLeafSP leaf);
 
private:
    const Flags m_flags;
};
 
Q_DECLARE_OPERATORS_FOR_FLAGS(KisMergeWalker::Flags)
 
#endif /* __KIS_MERGE_WALKER_H */