/*
*	DSFML - SFML Library wrapper for the D programming language.
*	Copyright (C) 2008 Julien Dagorn (sirjulio13@gmail.com)
*	Copyright (C) 2010 Andreas Hollandt
*
*	This software is provided 'as-is', without any express or
*	implied warranty. In no event will the authors be held
*	liable for any damages arising from the use of this software.
*
*	Permission is granted to anyone to use this software for any purpose,
*	including commercial applications, and to alter it and redistribute
*	it freely, subject to the following restrictions:
*
*	1.  The origin of this software must not be misrepresented;
*		you must not claim that you wrote the original software.
*		If you use this software in a product, an acknowledgment
*		in the product documentation would be appreciated but
*		is not required.
*
*	2.  Altered source versions must be plainly marked as such,
*		and must not be misrepresented as being the original software.
*
*	3.  This notice may not be removed or altered from any
*		source distribution.
*/

module dsfml.graphics.renderwindow;

import	dsfml.graphics.color,
		dsfml.graphics.sprite,
		dsfml.graphics.shape,
		dsfml.graphics.text,
		dsfml.graphics.image,
		dsfml.graphics.rect,
		dsfml.graphics.shader,
		dsfml.graphics.view,
		dsfml.graphics.idrawable;

import	dsfml.window.event,
		dsfml.window.input,
		dsfml.window.videomode,
		dsfml.window.window,
		dsfml.window.windowhandle;

import	dsfml.system.common,
		dsfml.system.stringutil,
		dsfml.system.vector2;

/**
*	Simple wrapper for Window that allows easy 2D rendering. 
*/
class RenderWindow : Window
{
private:	
	View m_view = null;
	View m_defaultView = null;

public:

	/**
	*	Construct the window
	*
	*	Params:	
	*		mode = Video mode to use
	*		title = Title of the window
	*		windowStyle = Window style (Resize | Close by default)
	*		settings = Context settings (default is default ContextSettings values)
	*/
	this(VideoMode mode, string title, uint windowStyle = Style.RESIZE | Style.CLOSE, ContextSettings settings = ContextSettings())
	{
		super(sfRenderWindow_Create(mode, toStringz(title), windowStyle, &settings));
		m_input = new Input(sfRenderWindow_GetInput(m_ptr));
	}

	/**
	*	Construct the window from an existing control
	*	
	*	Params:		
	*		handle = Platform-specific handle of the control
	*		settings = Context settings (default is default ContextSettings values)
	*/
	this(WindowHandle handle, ContextSettings settings = ContextSettings())
	{
		super(sfRenderWindow_CreateFromHandle(handle, &settings));
		m_input = new Input(sfRenderWindow_GetInput(m_ptr));
	}

	override void dispose()
	{
		sfRenderWindow_Destroy(m_ptr);
	}

	/**
	*	Create (or recreate) the window
	*	
	*	Input created with getInput will become invalid.
	*					
	*	Params:		
	*		mode = Video mode to use
	*		title = Title of the window
	*		windowStyle = Window style (Resize | Close by default)
	*		settings = Context settings (default is default ContextSettings values)
	*
	*/
	void create(VideoMode mode, string title, uint windowStyle = Style.RESIZE | Style.CLOSE, ContextSettings settings = ContextSettings())
	{
		if (m_ptr !is null)
			dispose();
			
		m_ptr = sfRenderWindow_Create(mode, toStringz(title), windowStyle, &settings);
		m_input = new Input(sfRenderWindow_GetInput(m_ptr));
	}

	/**
	*	Create (or recreate) the window from an existing control
	*	
	*	Input created with getInput become invalid.
	*					
	*	Params:		
	*		handle = Platform-specific handle of the control
	*		settings = Context settings (default is default ContextSettings values)
	*
	*/
	void create(WindowHandle handle, ContextSettings settings = ContextSettings())
	{
		if (m_ptr !is null)
			dispose();

		m_ptr = sfRenderWindow_CreateFromHandle(handle, &settings);
		m_input = new Input(sfRenderWindow_GetInput(m_ptr));
	}
	
	/**
	*	Draw a sprite, shape or text on the window with a shader
	*
	*	Params:
	*		drawable = IDrawable to draw
	*		shader = Shader to use
	*/
	void draw(IDrawable drawable, Shader shader)
	{
		drawable.renderWithShader(this, shader);
	}
	
	/**
	*	Draw a sprite, shape or text
	*	
	*	Params:
	*		drawable = IDrawable to draw
	*/				
	void draw(IDrawable drawable)
	{
		drawable.render(this);
	}
	
	/**
	*	Clear the screen with the given color.
	*
	*	Params:
	*		col = Fill color
	*/
	void clear(Color col = Color.BLACK)
	{
		sfRenderWindow_Clear(m_ptr, col);
	}

	/**
	*	Change the current active view.
	*	The current view is defined with the initial size of the window
	*
	*	Params: 
	*		newView = Pointer to the new view (pass getDefaultView to set the default view)
	*/
	void setView(View newView)
	{
		if (m_view !is null)
		{		
			m_view.setHandled(false);
		}
		
		sfRenderWindow_SetView(m_ptr, newView.getNativePointer);
		  
		m_view = newView;
		m_view.setHandled(true);
	}

	/**
	*	Get the current view rectangle
	*
	*	Returns: 
	*		current view rectangle, in global coordinates
	*/
	View getView()
	{
		if (m_view is null)
		{
			void* cView = sfRenderWindow_GetView(m_ptr);
			m_view = new View(cView, true);
		}
		return m_view;
	}

	/**
	*	Get the default view
	*
	*	Returns: 
	*		default view
	*/
	View getDefaultView()
	{
		if (m_defaultView is null)
		{
			void* cView = sfRenderWindow_GetDefaultView(m_ptr);
			m_defaultView = new View(cView, true);
		}
		return m_defaultView;
	}

	/**
	*	Convert a point in window coordinates into view coordinates
	*
	*	Params: 
	*		windowX = X coordinate of the point to convert, relative to the window
	*		windowY = Y coordinate of the point to convert, relative to the window
	*		targetView = Target view to convert the point to (pass NULL to use the current view)
	*		
	*	Returns:
	*		Converted point			
	*/	 
	Vector2f convertCoords(uint windowX, uint windowY, View targetView = null)
	{
		Vector2f vec;
		sfRenderWindow_ConvertCoords(m_ptr, windowX, windowY, &vec.x, &vec.y, targetView is null ? null : targetView.getNativePointer);
		return vec;
	}
	
	/**
	 *	Make sure that what has been drawn so far is rendered
	 *	Use this function if you use OpenGL rendering commands, and you want to make sure that things will appear on top
	 *	of all the SFML objects that have been drawn so far. This is needed because SFML doesn't use immediate rendering,
	 *	it first accumulates drawables into a queue and trigger the actual rendering afterwards.
	 *
	 *	You don't need to call this function if you're not dealing with OpenGL directly.
	 */
	void flush()
	{
		sfRenderWindow_Flush(m_ptr);
	}

private:
	
	static extern(C)
	{
		void*	function(VideoMode, cchar*, uint, ContextSettings*)	sfRenderWindow_Create;
		void*	function(WindowHandle, ContextSettings*)			sfRenderWindow_CreateFromHandle;
		void	function(void*)										sfRenderWindow_Destroy;
		void*	function(void*)										sfRenderWindow_GetInput;
//		bool	function(void*)										sfRenderWindow_IsOpened; // also in Window

	/*
		void	function(void*, void*)								sfRenderWindow_DrawSprite;
		void	function(void*, void*)								sfRenderWindow_DrawShape;
		void	function(void*, void*)								sfRenderWindow_DrawText;

		void	function(void*, void*, void*)						sfRenderWindow_DrawSpriteWithShader;
		void	function(void*, void*, void*)						sfRenderWindow_DrawShapeWithShader;
		void	function(void*, void*, void*)						sfRenderWindow_DrawTextWithShader;
	*/
		
		void*	function(void*)										sfRenderWindow_Capture;
		void	function(void*, Color)								sfRenderWindow_Clear;
		void	function(void*, void*)								sfRenderWindow_SetView;
		void*	function(void*)										sfRenderWindow_GetView;
		void*	function (void*)									sfRenderWindow_GetDefaultView;
		void	function(void*, uint, uint, float*, float*, void*)	sfRenderWindow_ConvertCoords;
		
		// DSFML2
		void	function(void*)										sfRenderWindow_Flush;
	}

	static this()
	{
	debug
		DllLoader dll = DllLoader.load("csfml-graphics-d");
	else
		DllLoader dll = DllLoader.load("csfml-graphics");

		mixin(loadFromSharedLib("sfRenderWindow_Create"));
		mixin(loadFromSharedLib("sfRenderWindow_CreateFromHandle"));
		mixin(loadFromSharedLib("sfRenderWindow_Destroy"));
		mixin(loadFromSharedLib("sfRenderWindow_GetInput"));

	/*
		mixin(loadFromSharedLib("sfRenderWindow_DrawSprite"));
		mixin(loadFromSharedLib("sfRenderWindow_DrawShape"));
		mixin(loadFromSharedLib("sfRenderWindow_DrawText"));

		mixin(loadFromSharedLib("sfRenderWindow_DrawSpriteWithShader"));
		mixin(loadFromSharedLib("sfRenderWindow_DrawShapeWithShader"));
		mixin(loadFromSharedLib("sfRenderWindow_DrawTextWithShader"));
	*/
		
		mixin(loadFromSharedLib("sfRenderWindow_Clear"));
		mixin(loadFromSharedLib("sfRenderWindow_SetView"));
		mixin(loadFromSharedLib("sfRenderWindow_GetView"));
		mixin(loadFromSharedLib("sfRenderWindow_GetDefaultView"));
		mixin(loadFromSharedLib("sfRenderWindow_ConvertCoords"));
		
		// DSFML2
		mixin(loadFromSharedLib("sfRenderWindow_Flush"));
	}
	
	static ~this()
	{
		
	}
}