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/** 
 * @file llbadge.h
 * @brief Header for badges
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLBADGE_H
#define LL_LLBADGE_H

#include <string>

#include "lluicolor.h"
#include "lluictrl.h"
#include "llstring.h"
#include "lluiimage.h"
#include "llview.h"

//
// Declarations
//

class LLFontGL;
class LLScrollContainer;
class LLUICtrlFactory;

//
// Relative Position Alignment
//

namespace LLRelPos
{
	enum Location
	{
		CENTER	= 0,

		LEFT	= (1 << 0),
		RIGHT	= (1 << 1),

		TOP		= (1 << 2),
		BOTTOM	= (1 << 3),

		BOTTOM_LEFT		= (BOTTOM | LEFT),
		BOTTOM_RIGHT	= (BOTTOM | RIGHT),

		TOP_LEFT		= (TOP | LEFT),
		TOP_RIGHT		= (TOP | RIGHT),
	};

	inline bool IsBottom(Location relPos)	{ return (relPos & BOTTOM) == BOTTOM; }
	inline bool IsCenter(Location relPos)	{ return (relPos == CENTER); }
	inline bool IsLeft(Location relPos)		{ return (relPos & LEFT) == LEFT; }
	inline bool IsRight(Location relPos)	{ return (relPos & RIGHT) == RIGHT; }
	inline bool IsTop(Location relPos)		{ return (relPos & TOP) == TOP; }
}

// NOTE: This needs to occur before Optional<LLRelPos::Location> declaration for proper compilation.
namespace LLInitParam
{
	template<>
	struct TypeValues<LLRelPos::Location> : public TypeValuesHelper<LLRelPos::Location>
	{
		static void declareValues();
	};
}

//
// Classes
//

class LLBadge
: public LLUICtrl
{
public:
	struct Params 
	: public LLInitParam::Block<Params, LLUICtrl::Params>
	{
		Optional< LLHandle<LLView> >	owner;	// Mandatory in code but not in xml
		
		Optional< LLUIImage* >			border_image;
		Optional< LLUIColor >			border_color;

		Optional< LLUIImage* >			image;
		Optional< LLUIColor >			image_color;
		
		Optional< std::string >			label;
		Optional< LLUIColor >			label_color;

		Optional< S32 >					label_offset_horiz;
		Optional< S32 >					label_offset_vert;

		Optional< LLRelPos::Location >	location;
		Optional< S32 >					location_offset_hcenter;
		Optional< S32 >					location_offset_vcenter;
		Optional< U32 >					location_percent_hcenter;
		Optional< U32 >					location_percent_vcenter;

		Optional< F32 >					padding_horiz;
		Optional< F32 >					padding_vert;
		
		Params();
		
		bool equals(const Params&) const;
	};
	
protected:
	friend class LLUICtrlFactory;
	LLBadge(const Params& p);

public:

	~LLBadge();

	bool				addToView(LLView * view);

	virtual void		draw();

	const std::string	getLabel() const { return wstring_to_utf8str(mLabel); }
	void				setLabel( const LLStringExplicit& label);

private:
	LLPointer< LLUIImage >	mBorderImage;
	LLUIColor				mBorderColor;

	const LLFontGL*			mGLFont;
	
	LLPointer< LLUIImage >	mImage;
	LLUIColor				mImageColor;
	
	LLUIString				mLabel;
	LLUIColor				mLabelColor;

	S32						mLabelOffsetHoriz;
	S32						mLabelOffsetVert;

	LLRelPos::Location		mLocation;
	S32						mLocationOffsetHCenter;
	S32						mLocationOffsetVCenter;
	F32						mLocationPercentHCenter;
	F32						mLocationPercentVCenter;
	
	LLHandle< LLView >		mOwner;

	F32						mPaddingHoriz;
	F32						mPaddingVert;

	LLScrollContainer*		mParentScroller;
};

// Build time optimization, generate once in .cpp file
#ifndef LLBADGE_CPP
extern template class LLBadge* LLView::getChild<class LLBadge>(const std::string& name, BOOL recurse) const;
#endif

#endif  // LL_LLBADGE_H