Bilinear demosaic extremely fast and simple.

rtgui/mycurve.h

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+/*
+ *  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>
+#include <curvelistener.h>
+#include <cursormanager.h>
+
+#define RADIUS			3	/* radius of the control points. Assuming that the center of the spot is in the center of the pixel, the real RADIUS will be this value +0.5 */
+#define MIN_DISTANCE	8	/* min distance between control points */
+#define GRAPH_SIZE		200 /* size of the curve editor graphic */
+
+// For compatibility and simplicity reason, order shouldn't change, and must be identical to the order specified in the curveType widget
+enum CurveType {
+	Empty = -1,
+	Linear,			// 0
+	Spline,			// 1
+	Parametric,		// 2
+	NURBS,			// 3
+	// Insert new curve type above this line
+	Unchanged		// Must remain the last of the enum
+};
+
+class CurveDescr {
+
+    public:
+        CurveType type;
+        std::vector<double> x, y;   // in case of parametric curves the curve parameters are stored in vector x. In other cases these vectors store the coordinates of the bullets.
+};
+
+class MyCurve;
+struct MyCurveIdleHelper {
+    MyCurve* myCurve;
+    bool destroyed;
+    int pending;
+};
+
+class MyCurve : public Gtk::DrawingArea {
+
+    friend int mchistupdate (void* data);
+
+    protected:
+        CurveListener* listener;
+        CurveDescr curve;
+        CursorShape cursor_type;
+        Glib::RefPtr<Gdk::Pixmap> pixmap;
+        int innerWidth;		// inner width of the editor, allocated by the system
+        int innerHeight;	// inner height of the editor, allocated by the system
+        int prevInnerHeight;// previous inner height of the editor
+        int grab_point;		// the point that the user is moving
+        int closest_point;	// the point that is the closest from the cursor
+        int lit_point;		// the point that is lit when the cursor is near it
+        //int last;
+		Gdk::ModifierType mod_type;
+    	int cursorX;		// X coordinate in the graph of the cursor
+    	int cursorY;		// Y coordinate in the graph of the cursor
+    	double clampedX;	// clamped grabbed point X coordinates in the [0;1] range
+    	double clampedY;	// clamped grabbed point Y coordinates in the [0;1] range
+        double deltaX;		// signed X distance of the cursor between two consecutive MOTION_NOTIFY
+        double deltaY;		// signed Y distance of the cursor between two consecutive MOTION_NOTIFY
+        double distanceX;	// X distance from the cursor to the closest point
+        double distanceY;	// Y distance from the cursor to the closest point
+    	double ugpX;		// unclamped grabbed point X coordinate in the graph
+    	double ugpY;		// unclamped grabbed point Y coordinate in the graph
+        std::vector<Gdk::Point> point;
+        std::vector<Gdk::Point> upoint;
+        std::vector<Gdk::Point> lpoint;
+        int activeParam;
+        unsigned int bghist[256];	// histogram values
+        bool bghistvalid;
+        bool buttonPressed;
+        MyCurveIdleHelper* mcih;
+
+        void draw (int handle);
+        void interpolate ();
+        void getCursorPosition(GdkEvent* event);
+        void findClosestPoint();
+        std::vector<double> get_vector (int veclen);
+
+    public:
+        MyCurve ();
+        ~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 ();
+        void setActiveParam (int ac);
+        void updateBackgroundHistogram (unsigned int* hist);
+        void reset ();
+};
+
+#endif