/*
 *  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 _THRESHOLDADJUSTER_H_
#define _THRESHOLDADJUSTER_H_

#include <gtkmm.h>
#include "editedstate.h"
#include "guiutils.h"
#include "thresholdselector.h"

class ThresholdAdjuster;

/*
 * TODO: Maybe we could just send back the history string instead of the individual values?
 */
class ThresholdAdjusterListener {

  public:
	// to be used by listener that has created a ThresholdAdjuster with with single threshold and precision > 0
    virtual void adjusterChanged (ThresholdAdjuster* a, double newBottom, double newTop) {}
	// to be used by listener that has created a ThresholdAdjuster with with double threshold and precision > 0
    virtual void adjusterChanged (ThresholdAdjuster* a, double newBottomLeft, double newTopLeft, double newBottomRight, double newTopRight) {}
	// to be used by listener that has created a ThresholdAdjuster with with single threshold and precision == 0
    virtual void adjusterChanged (ThresholdAdjuster* a, int newBottom, int newTop) {}
	// to be used by listener that has created a ThresholdAdjuster with with double threshold and precision == 0
    virtual void adjusterChanged (ThresholdAdjuster* a, int newBottomLeft, int newTopLeft, int newBottomRight, int newTopRight) {}
};


class ThresholdAdjuster : public Gtk::VBox {

	protected:
		Gtk::HBox* hbox;
		Gtk::Label* label;
		ThresholdSelector tSelector;
		//MySpinButton* spin;
		Gtk::Button* reset;
		ThresholdAdjusterListener* adjusterListener;
		sigc::connection delayConnection;
		//sigc::connection spinChange;
		sigc::connection selectorChange;
		sigc::connection editedChange;
		bool listenerReady;
		double initialDefaultVal[4];	// default value at construction time
		EditedState editedState;
		EditedState defEditedState;
		Gtk::CheckButton* editedCheckBox;
		bool afterReset;
		bool blocked;
		bool addMode;
		bool separatedMode;
		int delay;

		double shapeValue (double a);
		void refreshLabelStyle ();
		void initObject (Glib::ustring label, bool editedcb);
		void sendToListener ();

	public:

		// Custom Threshold widget with 2 cursors (Top and Bottom) and a custom curve provided by the instanciator,
		// each cursor having his own range, default value and precision
		ThresholdAdjuster (Glib::ustring label,
				double minValueBottom, double maxValueBottom, double defBottom, Glib::ustring labelBottom, unsigned int precisionBottom,
				double minValueTop,    double maxValueTop,    double defTop,    Glib::ustring labelTop,    unsigned int precisionTop,
				ThresholdCurveProvider* curveProvider, bool editedCheckBox=false);
		// Simple Threshold widget with 2 linked sliders (0->1 or 1->0)
		ThresholdAdjuster (Glib::ustring label, double minValue, double maxValue, double defBottom,
				double defTop, unsigned int precision, bool startAtOne, bool editedCheckBox=false);
		// Simple Threshold widget with 4 linked sliders by pairs (0->1->0 or 1->0->1)
		ThresholdAdjuster (Glib::ustring label, double minValue, double maxValue, double defBottomLeft,
				double defTopLeft, double defBottomRight, double defTopRight, unsigned int precision,
				bool startAtOne, bool editedCheckBox=false);

		virtual ~ThresholdAdjuster ();
		void setAdjusterListener (ThresholdAdjusterListener* alistener) { adjusterListener = alistener; }

		void setBgCurveProvider (ThresholdCurveProvider* provider);
		ThresholdSelector* getThresholdSelector() { return &tSelector; };

		template <typename T>
		rtengine::procparams::Threshold<T> getValue () {
			return tSelector.getPositions<T>();
		}
		void getValue (double& bottom, double& top);
		void getValue (double& bottomLeft, double& topLeft, double& bottomRight, double& topRight);
		void getValue (int& bottom, int& top);
		void getValue (int& bottomLeft, int& topLeft, int& bottomRight, int& topRight);
		void getValue (Glib::ustring& bottom, Glib::ustring& top);
		void getValue (Glib::ustring& bottomLeft, Glib::ustring& topLeft, Glib::ustring& bottomRight, Glib::ustring& topRight);
		template <class T>
		void setValue (const rtengine::procparams::Threshold<T> &tValues) { tSelector.setPositions<T>(tValues); }
		void setValue (double bottom, double top);
		void setValue (double bottomLeft, double topLeft, double bottomRight, double topRight);
		void setEnabled (bool enabled);
		template <typename T>
		void setDefault (const rtengine::procparams::Threshold<T> &tresh) { tSelector.setDefaults<T>(tresh); }
		void setDefault (double defBottom, double defTop);
		void setDefault (double defBottomLeft, double defTopLeft, double defBottomRight, double defTopRight);
		void setEditedState (EditedState eState);
		EditedState getEditedState ();
		void setDefaultEditedState (EditedState eState);
		void showEditedCB ();
		void block(bool isBlocked) { blocked = isBlocked; }
		void setBgGradient (const std::vector<GradientMilestone> &milestones) { tSelector.setBgGradient (milestones); }
		void setBgColorProvider (ColorProvider *cp, int i) { tSelector.setColorProvider(cp, i); }
		void setUpdatePolicy (eUpdatePolicy policy) { tSelector.setUpdatePolicy(policy); }

		//void spinChanged ();
		void selectorChanged ();
		bool notifyListener ();
		void resetPressed (GdkEventButton* event);
		void editedToggled ();
		Glib::ustring getHistoryString ();
		void set_tooltip_markup(const Glib::ustring& markup);
		// this set_tooltip_text method is to set_tooltip_markup, and text can contain markups
		void set_tooltip_text(const Glib::ustring& text);
};

#endif
