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diff --git a/digikam/imageplugins/perspective/perspectivewidget.h b/digikam/imageplugins/perspective/perspectivewidget.h
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date  : 2005-01-18
+ * Description : a widget class to edit perspective.
+ * 
+ * Copyright (C) 2005-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ * Copyright (C) 2006-2007 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
+ * 
+ * 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, 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.
+ * 
+ * ============================================================ */
+
+#ifndef PERSPECTIVEWIDGET_H
+#define PERSPECTIVEWIDGET_H
+
+// Qt includes.
+
+#include <qwidget.h>
+#include <qpoint.h>
+#include <qpointarray.h>
+#include <qcolor.h>
+#include <qrect.h>
+
+// Digikam includes.
+
+#include "dimg.h"
+
+// Local includes.
+
+#include "matrix.h"
+
+class QPixmap;
+
+namespace Digikam
+{
+class ImageIface;
+}
+
+namespace DigikamPerspectiveImagesPlugin
+{
+
+class PerspectiveWidget : public QWidget
+{
+Q_OBJECT
+
+public:
+
+    PerspectiveWidget(int width, int height, QWidget *parent=0);
+    ~PerspectiveWidget();
+
+    QRect  getTargetSize(void);
+    QPoint getTopLeftCorner(void);
+    QPoint getTopRightCorner(void);
+    QPoint getBottomLeftCorner(void);
+    QPoint getBottomRightCorner(void);
+    void   reset(void);
+
+    float getAngleTopLeft(void);
+    float getAngleTopRight(void);
+    float getAngleBottomLeft(void);
+    float getAngleBottomRight(void);
+
+    void  applyPerspectiveAdjustment(void);
+
+    Digikam::ImageIface* imageIface();
+
+public slots:
+
+    void slotToggleAntiAliasing(bool a);
+    void slotToggleDrawWhileMoving(bool draw);
+    void slotToggleDrawGrid(bool grid);
+
+    void slotChangeGuideColor(const QColor &color);
+    void slotChangeGuideSize(int size);    
+
+signals:
+
+    void signalPerspectiveChanged( QRect newSize, float topLeftAngle, float topRightAngle,
+                                   float bottomLeftAngle, float bottomRightAngle );   
+
+protected:
+
+    void paintEvent( QPaintEvent *e );
+    void resizeEvent( QResizeEvent * e );
+    void mousePressEvent ( QMouseEvent * e );
+    void mouseReleaseEvent ( QMouseEvent * e );
+    void mouseMoveEvent ( QMouseEvent * e );
+
+private:  // Widget methods.
+
+    void   updatePixmap(void);
+
+    void   transformAffine(Digikam::DImg *orgImage, Digikam::DImg *destImage,
+                           const Matrix &matrix, Digikam::DColor background);
+
+    QPoint buildPerspective(QPoint orignTopLeft, QPoint orignBottomRight,
+                            QPoint transTopLeft, QPoint transTopRight,
+                            QPoint transBottomLeft, QPoint transBottomRight,
+                            Digikam::DImg *orgImage=0, Digikam::DImg *destImage=0,
+                            Digikam::DColor background=Digikam::DColor());
+
+private:
+
+    enum ResizingMode
+    {
+        ResizingNone = 0,
+        ResizingTopLeft,
+        ResizingTopRight,
+        ResizingBottomLeft,
+        ResizingBottomRight
+    };
+
+    bool                 m_antiAlias;
+    bool                 m_drawWhileMoving;
+    bool                 m_drawGrid;
+
+    uint                *m_data;
+    int                  m_w;
+    int                  m_h;
+    int                  m_origW;
+    int                  m_origH;
+
+    int                  m_currentResizing;
+
+    int                  m_guideSize;
+
+    QRect                m_rect;
+
+    // Tranformed center area for mouse position control.
+
+    QPoint               m_transformedCenter;
+
+    // Draggable local region selection corners.
+
+    QRect                m_topLeftCorner;
+    QRect                m_topRightCorner;
+    QRect                m_bottomLeftCorner;
+    QRect                m_bottomRightCorner;
+
+    QPoint               m_topLeftPoint;
+    QPoint               m_topRightPoint;
+    QPoint               m_bottomLeftPoint;
+    QPoint               m_bottomRightPoint;
+    QPoint               m_spot;
+
+    QColor               m_guideColor;
+
+    // 60 points will be stored to compute a grid of 15x15 lines.
+    QPointArray          m_grid;
+
+    QPixmap             *m_pixmap;
+
+    Digikam::ImageIface *m_iface;
+    Digikam::DImg        m_previewImage;
+};
+
+}  // NameSpace DigikamPerspectiveImagesPlugin
+
+#endif /* PERSPECTIVEWIDGET_H */