Pipette and "On Preview Widgets" branch. See issue 227

The pipette part is already working quite nice but need to be finished. The widgets part needs more work...

rtgui/hsvequalizer.h

@@ -0,0 +1,60 @@
+/*
+ *  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 HSVEQUALIZER_H_INCLUDED
+#define HSVEQUALIZER_H_INCLUDED
+
+#include <gtkmm.h>
+#include "adjuster.h"
+#include "toolpanel.h"
+#include "guiutils.h"
+#include "curveeditor.h"
+#include "curveeditorgroup.h"
+#include "colorprovider.h"
+
+
+class HSVEqualizer : public Gtk::VBox, public AdjusterListener, public FoldableToolPanel, public CurveListener, public ColorProvider
+{
+
+protected:
+
+    Gtk::CheckButton * enabled;
+
+	CurveEditorGroup*  curveEditorG;
+	FlatCurveEditor*   hshape;
+	FlatCurveEditor*   sshape;
+	FlatCurveEditor*   vshape;
+
+public:
+
+    HSVEqualizer ();
+    virtual ~HSVEqualizer ();
+
+    void read           (const rtengine::procparams::ProcParams* pp, const ParamsEdited* pedited=NULL); 
+    void write          (rtengine::procparams::ProcParams* pp, ParamsEdited* pedited=NULL);
+    void curveChanged   (CurveEditor* ce);
+    //void setDefaults    (const rtengine::procparams::ProcParams* defParams, const ParamsEdited* pedited=NULL);
+    void setBatchMode   (bool batchMode);
+    void autoOpenCurve  ();
+    virtual void colorForValue (double valX, double valY, int callerId, ColorCaller* caller);
+   
+    //void adjusterChanged (Adjuster* a, double newval);
+};
+
+#endif