SOP/SOP_UndoGDT.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Jonathan McGee
 *      Side Effects Software Inc.
 *      477 Richmond Street West
 *      Toronto, Ontario,  M5V 3E7
 *      Canada
 *      416-504-9876
 *
 * NAME:        SOP Library (C++)
 *
 * COMMENTS: This class stores deltas (a GDT_Detail object) which are
 *           used to complete an undo/redo operation for a class
 *           derived from SOP_GDT.
 *           Depending on the type of undo, we may apply the deltas
 *           inversely or not on an undo.
 */

#ifndef __SOP_UndoGDT_h__
#define __SOP_UndoGDT_h__

#include "SOP_API.h"
#include <UT/UT_Undo.h>
#include <GDT/GDT_Detail.h>

class SOP_GDT;

enum SOP_UndoGDTType {
    SOP_UNDOGDTTYPE_APPLY_CURRENT_DELTA         = 0,
    SOP_UNDOGDTTYPE_CLEAR_PERMANENT_DELTA       = 1
};

class SOP_API SOP_UndoGDT : public UT_Undo
{
    public:
        // Upon creation of a SOP_UndoGDT object, the node id
        // and a copy of the given GDT are stored.
                             SOP_UndoGDT(SOP_GDT *gdtnode,
                                         GDT_Detail *delta,
                                         SOP_UndoGDTType undotype);
        virtual             ~SOP_UndoGDT();

        virtual void         undo(void);
        virtual void         redo(void);

    private:
        int                  myOpId;
        GDT_Detail          *myDelta;
        SOP_UndoGDTType      myUndoType;
        GDT_CoordinateFrames *myCoordinateFrames;
};

#endif

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