Changes to black compression and saturation controls. Black compression from 0-50 acts the same as 0-100 on the previous version, compressing dark tones without crushing blacks. 50-100 then starts crushing blacks until by 100 on the slider, all tones up to the set black point are sent to zero. In the new saturation control, negative values of the slider set a linear curve rather than an inverted S curve, and smoothly decrease saturation to zero across the board.

rtgui/equalizer.h

@@ -0,0 +1,59 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  RawTherapee 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 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  RawTherapee 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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  2010 Ilya Popov <ilia_popov@rambler.ru>
+ */
+ 
+#ifndef EQUALIZER_H_INCLUDED
+#define EQUALIZER_H_INCLUDED
+
+#include <gtkmm.h>
+#include <adjuster.h>
+#include <toolpanel.h>
+
+class Equalizer : public Gtk::VBox, public AdjusterListener, public ToolPanel 
+{
+
+protected:
+
+    Gtk::CheckButton * enabled;
+    Adjuster* correction[8]; 
+
+    sigc::connection enaConn;
+    sigc::connection neutralPressedConn;
+    sigc::connection contrastPlusPressedConn;
+    sigc::connection contrastMinusPressedConn;
+    
+    bool lastEnabled;
+
+public:
+
+    Equalizer ();
+    virtual ~Equalizer ();
+
+    void read           (const rtengine::procparams::ProcParams* pp, const ParamsEdited* pedited=NULL); 
+    void write          (rtengine::procparams::ProcParams* pp, ParamsEdited* pedited=NULL);
+    void setDefaults    (const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited=NULL);
+    void setBatchMode   (bool batchMode);
+   
+    void adjusterChanged (Adjuster* a, double newval);
+    void enabledToggled ();
+    void neutralPressed ();
+    void contrastPlusPressed ();
+    void contrastMinusPressed ();
+};
+
+#endif