1 files changed, 147 insertions, 0 deletions
diff --git a/krita/core/tiles/kis_memento.h b/krita/core/tiles/kis_memento.h
new file mode 100644
index 00000000..696f8129
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+++ b/krita/core/tiles/kis_memento.h
@@ -0,0 +1,147 @@
+/*
+ *  Copyright (c) 2005 Casper Boemann <cbr@boemann.dk>
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef KIS_MEMENTO_H_
+#define KIS_MEMENTO_H_
+
+#include <qglobal.h>
+#include <qrect.h>
+
+#include <ksharedptr.h>
+
+class KisTile;
+class KisTiledDataManager;
+
+class KisMemento;
+typedef KSharedPtr<KisMemento> KisMementoSP;
+
+class KisMemento : public KShared
+{
+public:
+    KisMemento(Q_UINT32 pixelSize);
+    ~KisMemento();
+/*
+    // For consolidating transactions
+    virtual KisTransaction &operator+=(const KisTransaction &) = 0;
+    // For consolidating transactions
+    virtual KisTransaction &operator+(const KisTransaction &,
+                  const KisTransaction &) = 0;
+*/
+    void extent(Q_INT32 &x, Q_INT32 &y, Q_INT32 &w, Q_INT32 &h) const;
+    QRect extent() const;
+
+    bool containsTile(Q_INT32 col, Q_INT32 row, Q_UINT32 tileHash) const;
+
+    // For debugging use
+    bool valid() const { return m_valid; }
+    void setInvalid() { m_valid = false; }
+
+private:
+
+    class DeletedTile {
+    public:
+        DeletedTile(Q_INT32 col, Q_INT32 row, const DeletedTile *next)
+            : m_col(col),
+              m_row(row),
+              m_next(next)
+        {
+        }
+
+        Q_INT32 col() const { return m_col; }
+        Q_INT32 row() const { return m_row; }
+        const DeletedTile *next() const { return m_next; }
+
+    private:
+        Q_INT32 m_col;
+        Q_INT32 m_row;
+        const DeletedTile *m_next;
+    };
+
+    class DeletedTileList {
+    public:
+        DeletedTileList()
+            : m_firstDeletedTile(0)
+        {
+        }
+
+        ~DeletedTileList();
+
+        void addTile(Q_INT32 col, Q_INT32 row)
+        {
+            DeletedTile *d = new DeletedTile(col, row, m_firstDeletedTile);
+            Q_CHECK_PTR(d);
+
+            m_firstDeletedTile = d;
+        }
+
+        DeletedTile *firstTile() const
+        {
+            return m_firstDeletedTile;
+        }
+
+        void clear();
+
+    private:
+        DeletedTile *m_firstDeletedTile;
+    };
+
+    void addTileToDeleteOnRedo(Q_INT32 col, Q_INT32 row)
+    {
+        m_redoDelTilesList.addTile(col, row);
+    }
+
+    DeletedTile *tileListToDeleteOnRedo()
+    {
+        return m_redoDelTilesList.firstTile();
+    }
+
+    void clearTilesToDeleteOnRedo()
+    {
+        m_redoDelTilesList.clear();
+    }
+
+    void addTileToDeleteOnUndo(Q_INT32 col, Q_INT32 row)
+    {
+        m_undoDelTilesList.addTile(col, row);
+    }
+
+    DeletedTile *tileListToDeleteOnUndo()
+    {
+        return m_undoDelTilesList.firstTile();
+    }
+
+    void clearTilesToDeleteOnUndo()
+    {
+        m_undoDelTilesList.clear();
+    }
+
+    friend class KisTiledDataManager;
+    KisTiledDataManager *originator;
+    KisTile **m_hashTable;
+    Q_UINT32 m_numTiles;
+    KisTile **m_redoHashTable;
+    DeletedTileList m_redoDelTilesList;
+    DeletedTileList m_undoDelTilesList;
+    Q_UINT8 *m_defPixel;
+    Q_UINT8 *m_redoDefPixel;
+    void deleteAll(KisTile *tile);
+
+    bool m_valid;
+};
+
+#endif // KIS_MEMENTO_H_