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diff --git a/src/imageplugins/adjustcurves/adjustcurvestool.h b/src/imageplugins/adjustcurves/adjustcurvestool.h
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+++ b/src/imageplugins/adjustcurves/adjustcurvestool.h
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2004-12-01
+ * Description : image histogram adjust curves.
+ *
+ * Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ *
+ * 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 ADJUSTCURVESTOOL_H
+#define ADJUSTCURVESTOOL_H
+
+// Digikam includes.
+
+#include "editortool.h"
+
+// Local includes.
+
+class TQComboBox;
+class TQPushButton;
+class TQHButtonGroup;
+
+namespace Digikam
+{
+class CurvesWidget;
+class HistogramWidget;
+class ColorGradientWidget;
+class EditorToolSettings;
+class ImageWidget;
+class DImg;
+class DColor;
+}
+
+namespace DigikamAdjustCurvesImagesPlugin
+{
+
+class AdjustCurvesTool : public Digikam::EditorTool
+{
+    TQ_OBJECT
+  
+
+public:
+
+    AdjustCurvesTool(TQObject *parent);
+    ~AdjustCurvesTool();
+
+private:
+
+    void readSettings();
+    void writeSettings();
+    void finalRendering();
+
+private slots:
+
+    void slotSaveAsSettings();
+    void slotLoadSettings();
+    void slotEffect();
+    void slotResetSettings();
+    void slotResetCurrentChannel();
+    void slotChannelChanged(int channel);
+    void slotScaleChanged(int scale);
+    void slotCurveTypeChanged(int type);
+    void slotSpotColorChanged(const Digikam::DColor& color);
+    void slotColorSelectedFromTarget(const Digikam::DColor& color);
+    void slotPickerColorButtonActived();
+
+private:
+
+    enum ColorPicker
+    {
+        BlackTonal=0,
+        GrayTonal,
+        WhiteTonal
+    };
+
+    enum ColorChannel
+    {
+        LuminosityChannel=0,
+        RedChannel,
+        GreenChannel,
+        BlueChannel,
+        AlphaChannel
+    };
+
+    enum CurvesDrawingType
+    {
+        SmoothDrawing=0,
+        FreeDrawing
+    };
+
+    enum HistogramScale
+    {
+        Linear=0,
+        Logarithmic
+    };
+
+    uchar                        *m_destinationPreviewData;
+
+    int                           m_histoSegments;
+    int                           m_currentPreviewMode;
+
+    TQComboBox                    *m_channelCB;
+
+    TQPushButton                  *m_resetButton;
+    TQPushButton                  *m_pickBlack;
+    TQPushButton                  *m_pickGray;
+    TQPushButton                  *m_pickWhite;
+    TQPushButton                  *m_curveFree;
+    TQPushButton                  *m_curveSmooth;
+
+    TQHButtonGroup                *m_pickerColorButtonGroup;
+    TQHButtonGroup                *m_scaleBG;  
+    TQHButtonGroup                *m_curveType;
+
+    Digikam::CurvesWidget        *m_curvesWidget;
+
+    Digikam::HistogramWidget     *m_histogramWidget;
+
+    Digikam::ColorGradientWidget *m_hGradient;
+    Digikam::ColorGradientWidget *m_vGradient;
+
+    Digikam::ImageWidget         *m_previewWidget;
+
+    Digikam::EditorToolSettings  *m_gboxSettings;
+
+    Digikam::DImg                *m_originalImage;
+};
+
+}  // NameSpace DigikamAdjustCurvesImagesPlugin
+
+#endif /* ADJUSTCURVESTOOL_H */