initial import

rtgui/mycurve.h

@@ -0,0 +1,69 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  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/>.
+ */
+#ifndef _MYCURVE_
+#define _MYCURVE_
+
+#include <gtkmm.h>
+#include <vector>
+
+class CurveListener {
+
+    public:
+        virtual void curveChanged () {}
+};
+
+enum CurveType {Linear, Spline};
+
+class CurveDescr {
+
+    public:
+        CurveType type;
+        std::vector<double> x, y;
+};
+
+class MyCurve : public Gtk::DrawingArea {
+
+        CurveListener* listener;
+        CurveDescr curve;
+        Gdk::CursorType cursor_type;
+        Glib::RefPtr<Gdk::Pixmap> pixmap;
+        int height;                 
+        int grab_point;              
+        int last;
+        std::vector<Gdk::Point> point;
+        
+    protected:
+        void draw (int width, int height);
+        void interpolate (int width, int height);
+        std::vector<double> get_vector (int veclen);
+        double spline_eval (int n, double x[], double y[], double y2[], double val);
+        void spline_solve (int n, double x[], double y[], double y2[]);
+
+    public:
+        MyCurve ();
+        
+        void setCurveListener (CurveListener* cl) { listener = cl; }
+        std::vector<double> getPoints ();
+        void setPoints (const std::vector<double>& p);
+        void setType (CurveType t);
+        bool handleEvents (GdkEvent* event);
+        void notifyListener ();
+};
+
+#endif