/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code 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.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/
#ifndef __DEBUGGRAPH_H__
#define __DEBUGGRAPH_H__

/*
================================================================================================
Contains the DebugGraph declaration.
================================================================================================
*/

/*
================================================
The *Debug Graph, idDebugGraph, contains graphing functionality common to many debug tools.
================================================
*/
class idDebugGraph {
public:
	idDebugGraph( int numItems = 0 );

	void	Enable( bool b ) { enable = b; }

	// create a graph with the specified number of bars
	void	Init( int numBars );

	void	AddGridLine( float value, const idVec4 & color );

	// sets a bar value, pass -1 to append an element
	void	SetValue( int b, float value, const idVec4 & color );
	float	GetValue( int b ) { return bars[b].value; }

	// sets a bar label
	void	SetLabel( int b, const char * text );

	enum fillMode_t {
		GRAPH_LINE,				// only draw a single top line for each bar
		GRAPH_FILL,				// fill the entire bar from the bottom (or left)
		GRAPH_FILL_REVERSE,		// fill the entire bar from the top (or right)
	};
	void	SetFillMode( fillMode_t m ) { mode = m; }

	// render the graph sideways?
	void	SetSideways( bool s ) { sideways = s; }

	// the background color is what's drawn between bars and in the empty space
	void	SetBackgroundColor( const idVec4 & color ) { bgColor = color; }
	void	SetLabelColor( const idVec4 & color ) { fontColor = color; }

	// the border specifies the amount of space between bars as well as the amount of space around the entire graph
	void	SetBorder( float b ) { border = b; }

	// set the screen position for the graph
	void	SetPosition( float x, float y, float w, float h ) { position.Set( x, y, w, h ); }

	void	Render( idRenderSystem * gui );

private:
	const class idMaterial * white;
	const class idMaterial * font;

	idVec4	bgColor;
	idVec4	fontColor;
	fillMode_t mode;
	bool	sideways;
	float	border;
	idVec4	position;
	bool	enable;

	struct graphPlot_t {
		float	value;
		idVec4	color;
	};
	idList< graphPlot_t >	bars;
	idList< graphPlot_t >	grid;
	idList< idStr >			labels;
};

#endif