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diff --git a/src/imageplugins/channelmixer/channelmixer.h b/src/imageplugins/channelmixer/channelmixer.h
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+++ b/src/imageplugins/channelmixer/channelmixer.h
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2005-02-26
+ * Description : image channels mixer.
+ *
+ * Copyright (C) 2005-2008 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 CHANNELMIXER_H
+#define CHANNELMIXER_H
+
+// Digikam includes.
+
+#include "imagedlgbase.h"
+
+class TQCheckBox;
+class TQComboBox;
+class TQPushButton;
+class TQHButtonGroup;
+
+class KDoubleNumInput;
+
+namespace Digikam
+{   
+class HistogramWidget;
+class ColorGradientWidget;
+class ImageWidget;
+class DColor;
+}
+
+namespace DigikamChannelMixerImagesPlugin
+{
+
+class ChannelMixerDialog : public Digikam::ImageDlgBase
+{
+    TQ_OBJECT
+  
+
+public:
+
+    ChannelMixerDialog(TQWidget *parent);
+    ~ChannelMixerDialog();
+
+private:
+
+    void readUserSettings();
+    void writeUserSettings();
+    void resetValues();
+    void finalRendering();
+    void adjustSliders();
+    
+private slots:
+
+    void slotUser2();
+    void slotUser3();
+    void slotResetCurrentChannel();
+    void slotEffect();
+    void slotChannelChanged(int channel);
+    void slotScaleChanged(int scale);
+    void slotGainsChanged();
+    void slotMonochromeActived(bool mono);
+    void slotColorSelectedFromTarget(const Digikam::DColor &color);    
+
+private:
+
+    enum ColorChannelGains 
+    {
+        RedChannelGains=0,
+        GreenChannelGains,
+        BlueChannelGains
+    };
+
+    enum HistogramScale
+    {
+        Linear=0,
+        Logarithmic
+    };
+
+private:
+    
+    uchar                        *m_destinationPreviewData;
+ 
+    double                        m_redRedGain;
+    double                        m_redGreenGain;
+    double                        m_redBlueGain;
+    double                        m_greenRedGain;
+    double                        m_greenGreenGain;
+    double                        m_greenBlueGain;
+    double                        m_blueRedGain;
+    double                        m_blueGreenGain;
+    double                        m_blueBlueGain;
+    double                        m_blackRedGain;
+    double                        m_blackGreenGain;
+    double                        m_blackBlueGain;
+    
+    TQComboBox                    *m_channelCB;    
+    
+    TQHButtonGroup                *m_scaleBG;  
+
+    KDoubleNumInput              *m_redGain;
+    KDoubleNumInput              *m_greenGain;
+    KDoubleNumInput              *m_blueGain;
+    
+    TQPushButton                  *m_resetButton;
+    
+    TQCheckBox                    *m_preserveLuminosity;
+    TQCheckBox                    *m_monochrome;
+    
+    Digikam::ColorGradientWidget *m_hGradient;
+    
+    Digikam::HistogramWidget     *m_histogramWidget;
+    
+    Digikam::ImageWidget         *m_previewWidget;
+};
+
+}  // NameSpace DigikamChannelMixerImagesPlugin
+
+#endif /* CHANNELMIXER_H */