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+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2004-12-06
+ * Description : Black and White conversion tool.
+ *
+ * Copyright (C) 2004-2005 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
+ * Copyright (C) 2006-2007 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 IMAGEEFFECT_BWSEPIA_H
+#define IMAGEEFFECT_BWSEPIA_H
+
+// Qt Includes.
+
+#include <qstring.h>
+
+// Digikam include.
+
+#include "imagedlgbase.h"
+
+class QHButtonGroup;
+class QComboBox;
+class QButtonGroup;
+
+class KIntNumInput;
+class KTabWidget;
+
+namespace Digikam
+{
+class HistogramWidget;
+class ColorGradientWidget;
+class ImageWidget;
+class DColor;
+class DImg;
+class ImageCurves;
+class CurvesWidget;
+}
+
+namespace DigikamImagesPluginCore
+{
+
+class PreviewPixmapFactory;
+
+class ImageEffect_BWSepia : public Digikam::ImageDlgBase
+{
+    Q_OBJECT
+
+public:
+
+    ImageEffect_BWSepia(QWidget *parent);
+    ~ImageEffect_BWSepia();
+
+    friend class PreviewPixmapFactory;
+    
+protected:
+
+    QPixmap getThumbnailForEffect(int type);
+    void finalRendering();
+
+protected slots:
+
+    virtual void slotTimer();
+
+private:
+
+    void readUserSettings();
+    void writeUserSettings();
+    void resetValues();
+    void blackAndWhiteConversion(uchar *data, int w, int h, bool sb, int type);
+    
+private slots:
+
+    void slotUser2();
+    void slotUser3();
+    void slotEffect();
+    void slotChannelChanged(int channel);
+    void slotScaleChanged(int scale);
+    void slotSpotColorChanged(const Digikam::DColor &color);    
+    void slotColorSelectedFromTarget( const Digikam::DColor &color );
+    void slotFilterSelected(int filter);
+
+private:
+
+    enum BlackWhiteConversionType
+    {
+        BWNoFilter=0,         // B&W filter to the front of lens.
+        BWGreenFilter,
+        BWOrangeFilter,
+        BWRedFilter,
+        BWYellowFilter,
+
+        BWGeneric,            // B&W film simulation.
+        BWAgfa200X,    
+        BWAgfapan25,
+        BWAgfapan100,
+        BWAgfapan400,
+        BWIlfordDelta100,
+        BWIlfordDelta400,
+        BWIlfordDelta400Pro3200,
+        BWIlfordFP4,
+        BWIlfordHP5,
+        BWIlfordPanF,
+        BWIlfordXP2Super,
+        BWKodakTmax100,
+        BWKodakTmax400,
+        BWKodakTriX,
+
+        BWNoTone,             // Chemical color tone filter.
+        BWSepiaTone,        
+        BWBrownTone,
+        BWColdTone,
+        BWSeleniumTone,
+        BWPlatinumTone,
+	BWGreenTone
+    };
+
+    enum HistogramScale
+    {
+        Linear=0,
+        Logarithmic
+    };
+
+    enum ColorChannel
+    {
+        LuminosityChannel=0,
+        RedChannel,
+        GreenChannel,
+        BlueChannel
+    };
+
+    enum SettingsTab
+    {
+        FilmTab=0,
+        BWFiltersTab,
+        ToneTab,
+        LuminosityTab
+    };
+
+    // Color filter attenuation in percents. 
+    double m_redAttn, m_greenAttn, m_blueAttn;
+
+    // Channel mixer color multiplier. 
+    double m_redMult, m_greenMult, m_blueMult; 
+
+    uchar                        *m_destinationPreviewData;
+    
+    QComboBox                    *m_channelCB;
+    
+    QHButtonGroup                *m_scaleBG;
+    
+    QListBox                     *m_bwFilters;
+    QListBox                     *m_bwFilm;
+    QListBox                     *m_bwTone;
+
+    KIntNumInput                 *m_cInput;
+    KIntNumInput                 *m_strengthInput;
+    
+    KTabWidget                   *m_tab;
+    
+    Digikam::ImageWidget         *m_previewWidget;
+
+    Digikam::ColorGradientWidget *m_hGradient;
+    
+    Digikam::HistogramWidget     *m_histogramWidget;
+
+    Digikam::CurvesWidget        *m_curvesWidget;
+
+    Digikam::ImageCurves         *m_curves;
+    
+    Digikam::DImg                *m_originalImage;
+    Digikam::DImg                 m_thumbnailImage;
+
+    PreviewPixmapFactory         *m_previewPixmapFactory;
+};
+
+}  // NameSpace DigikamImagesPluginCore
+
+#endif /* IMAGEEFFECT_BWSEPIA_H */