/*
   ui/modelview.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_UI_MODELVIEW_H__
#define __INCLUDED_UI_MODELVIEW_H__

#include "math/axis.h"
#include "ui/widget.h"
#include "render/camera.h"

namespace ui
{

class ModelView : public Widget
{
public:
	ModelView(Widget *parent);
	~ModelView();
	
	enum Mode { Model = 0, Globe = 1 };

	inline std::string const &modelname() const {
		return modelview_modelname;
	}

	inline Mode mode() const {
		return modelview_mode;
	}
	
	inline float zoom() const {
		return modelview_zoom;
	}
	
	inline float radius() const {
		return modelview_radius;
	}

	/**
	 * @brief clear the modelview and show nothing
	 * */
	void clear();
	
	/**
	 * @brief show a textured globe with an optional corona
	 * */
	void set_globetexturename(const std::string & texturename, const std::string & coronaname, const std::string ringsname, const bool bright = false);
	
	/**
	 * @brief show a model
	 * */
	void set_modelname(const std::string & modelname);

	/**
	 * @brief et primary and secondary entity color, to be used by the model renderer
	 * */
	void set_colors(const math::Color & color_primary, const math::Color & color_secondary);

	/**
	 * @brief  print modelview widget description
	 * */
	virtual void print(const size_t indent) const;

	/**
	 * @brief set the zoom out factor
	 * @param zoom the new zoom factor
	 * The zoom factor will be clamped to the range [1.0-10.0]
	 * 1.0 is not zoomed out, 10.0 is zoomed out by a factor of 10
	 * */
	void set_zoom(const float zoom);
	
	inline void set_radius(const float radius) {
		modelview_radius = radius;
	}
	
	inline void set_mode(const Mode mode) {
		modelview_mode = mode;
	}

protected:
	/// draw the widget
	virtual void draw();

	/// draw border
	virtual void draw_border();
	
	/// draw border
	virtual void draw_background();

	/**
	 * @brief mouse button press event handler
	 * */
	virtual bool on_mousepress(const unsigned int button);

	/**
	 * @brief mouse button release event handler
	 * */
	virtual bool on_mouserelease(const unsigned int button);
	
	/**
	 * @brief mouse over event handler
	 * */
	virtual void on_mouseover(const math::Vector2f &cursor);
	
	/**
	 * @brief mouse movement event handler
	 * */
	virtual void on_mousemove(const math::Vector2f &cursor);
	
	/**
	 * @brief mouse hweel event handler
	 * */
	virtual bool on_mousewheel(const math::Vector2f & direction);

private:
	void reset();
	
	void draw_model();
	
	void draw_globe();
	
	Mode		modelview_mode;
	
	std::string	modelview_modelname;
	std::string	modelview_globetexturename;
	std::string	modelview_globecoronaname;
	std::string	modelview_globeringsname;
	bool		modelview_globebright;
	
	math::Color	modelview_color_primary;
	math::Color	modelview_color_secondary;
	
	float		modelview_zoom;
	float		modelview_radius;
	
	math::Axis	modelview_axis;
	math::Vector2f	modelview_cursor;
	bool		modelview_dragging;
	
	render::Camera	modelview_camera;
};

}

#endif // __INCLUDED_UI_MODELVIEW_H__