/* Copyright 2005 Nicholas Bishop
 * 
 * This file is part of SharpConstruct.
 *
 * SharpConstruct 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 2 of the License, or
 * (at your option) any later version.
 *
 * SharpConstruct 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 SharpConstruct; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#ifndef EDITOR_HH
#define EDITOR_HH

#include "ArcBall.h"
#include "Color.h"
#include "Cursor.hh"
#include "Math.hh"
#include "Optimized.h"
#include "Output3D.hh"
#include <gtkglmm.h>
#include <map>

namespace SharpConstruct
{
	namespace GInterface
	{
		class Editor : public Gtk::GL::DrawingArea
		{
		public:
			class DisplayOptionsData
			{
			public:
				enum GraphicsModeType
				{
					VBO, VAR, IMMEDIATE
				};

				DisplayOptionsData( Editor& );
				~DisplayOptionsData();
				
				bool Wireframe() const;
				bool Smoothed() const;
				bool DoubleSided() const;
				bool Speed() const;
				const Output3D& Output() const;
				Output3D& Output();
				GraphicsModeType GraphicsMode() const;
				const Color& BackgroundColor() const;
				
				void ToggleWireframe();
				void ToggleSmoothed();
				void ToggleDoubleSided();
				void ToggleSpeed();
				void SetGraphicsMode();
				void SetGraphicsMode( const GraphicsModeType );
				void SetBackgroundColor( const Color& );
			private:
				Editor& view_;

				bool wireframe_;
				bool smoothed_;
				bool double_sided_;
				bool speed_;
				Output3D* glout_;
				GraphicsModeType graphics_mode_;
				Color background_color_;
			};

			Editor();

			void Refresh( const bool, const bool );
			void ResetView();

			const DisplayOptionsData& DisplayOptions() const;
			DisplayOptionsData& DisplayOptions();
		protected:
			virtual bool on_button_press_event( GdkEventButton* );
			virtual bool on_motion_notify_event( GdkEventMotion* );
			virtual bool on_button_release_event( GdkEventButton* );
			virtual bool on_scroll_event( GdkEventScroll* );
			virtual void on_size_allocate( Gtk::Allocation& );

			virtual void on_realize();
			virtual bool on_configure_event( GdkEventConfigure* );
			virtual bool on_expose_event( GdkEventExpose* );

			void on_entire_section_changed_( const bool, const bool, const bool );
		private:
			void draw_model_();
			void load_data_();
			void orientate_();
			Optimized::Point3D project_( const Optimized::Point3D& in ) const;
			Math::Point2D< int > project_2d_( const Optimized::Point3D& in ) const;
			Optimized::Point3D unproject_( const Optimized::Point3D& in ) const;
			void project_points_();
			void project_normals_();
			Math::Rect2D< int > selection_boundary_() const;
			void set_viewport_();
			void update_mouse_();

			bool update_vert_norm_;
			bool update_color_;
			bool update_polygons_;
			DisplayOptionsData display_options_;

			bool redraw_complete_;
			bool rendered_;
			Math::Rect2D< int > dirty_;

			// Depth copy
			bool update_depth_storage_;
			std::vector< float > depth_storage_;

			// Camera
			ArcBall arc_ball_;
			Math::Point2D< float > location_;
			float zoom_;
			// Cached camera values
			double model_matrix_[ 16 ];
			double projection_matrix_[ 16 ];
			int viewport_[ 4 ];

			Cursor cursor_;
			Gdk::Point mouse_loc_;
			Gdk::ModifierType mouse_state_;
			Math::Point2D< int > last_mouse_location_;
			bool recalc_all_projected_;
			std::map< std::string, Math::Point2D< int > > symm_locs_;
		};
	}
}

#endif