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diff --git a/src/imageplugins/coreplugin/hsl/hsltool.h b/src/imageplugins/coreplugin/hsl/hsltool.h
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+++ b/src/imageplugins/coreplugin/hsl/hsltool.h
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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2004-07-16
+ * Description : digiKam image editor to adjust Hue, Saturation,
+ *               and Lightness of picture.
+ *
+ * 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 HSLTOOL_H
+#define HSLTOOL_H
+
+// Digikam includes.
+
+#include "editortool.h"
+
+class TQComboBox;
+class TQHButtonGroup;
+
+class KHSSelector;
+
+namespace KDcrawIface
+{
+class RDoubleNumInput;
+}
+
+namespace Digikam
+{
+class HistogramWidget;
+class ColorGradientWidget;
+class ImageWidget;
+class DColor;
+class DImg;
+class EditorToolSettings;
+}
+
+namespace DigikamImagesPluginCore
+{
+class HSPreviewWidget;
+
+class HSLTool : public Digikam::EditorTool
+{
+    TQ_OBJECT
+  
+
+public:
+
+    HSLTool(TQObject *parent);
+    ~HSLTool();
+
+private slots:
+
+    void slotEffect();
+    void slotChannelChanged(int channel);
+    void slotScaleChanged(int scale);
+    void slotColorSelectedFromTarget( const Digikam::DColor &color );
+    void slotHSChanged(int h, int s);
+    void slotHChanged(double h);
+    void slotSChanged(double s);
+    void slotResetSettings();
+
+private:
+
+    void writeSettings();
+    void readSettings();
+    void finalRendering();
+
+private:
+
+    enum HistogramScale
+    {
+        Linear=0,
+        Logarithmic
+    };
+
+    enum ColorChannel
+    {
+        LuminosityChannel=0,
+        RedChannel,
+        GreenChannel,
+        BlueChannel
+    };
+
+    uchar                        *m_destinationPreviewData;
+
+    TQComboBox                    *m_channelCB;
+
+    TQHButtonGroup                *m_scaleBG;
+
+    KDcrawIface::RDoubleNumInput *m_hInput;
+    KDcrawIface::RDoubleNumInput *m_sInput;
+    KDcrawIface::RDoubleNumInput *m_lInput;
+
+    KHSSelector                  *m_HSSelector;
+
+    HSPreviewWidget              *m_HSPreview;
+
+    Digikam::ImageWidget         *m_previewWidget;
+
+    Digikam::ColorGradientWidget *m_hGradient;
+
+    Digikam::HistogramWidget     *m_histogramWidget;
+
+    Digikam::DImg                *m_originalImage;
+
+    Digikam::EditorToolSettings  *m_gboxSettings;
+};
+
+}  // NameSpace DigikamImagesPluginCore
+
+#endif /* HSLTOOL_H */