/**
 * @file v4coloru.cpp
 * @brief LLColor4U class implementation.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

#include "linden_common.h"

//#include "v3coloru.h"
#include "v4coloru.h"
#include "v4color.h"
//#include "vmath.h"
#include "llmath.h"

// LLColor4U
LLColor4U LLColor4U::white(255, 255, 255, 255);
LLColor4U LLColor4U::black(  0,   0,   0, 255);
LLColor4U LLColor4U::red  (255,   0,   0, 255);
LLColor4U LLColor4U::green(  0, 255,   0, 255);
LLColor4U LLColor4U::blue (  0,   0, 255, 255);

// conversion
/* inlined to fix gcc compile link error
LLColor4U::operator LLColor4()
{
    return(LLColor4((F32)mV[VRED]/255.f,(F32)mV[VGREEN]/255.f,(F32)mV[VBLUE]/255.f,(F32)mV[VALPHA]/255.f));
}
*/

// Constructors


/*
LLColor4U::LLColor4U(const LLColor3 &vec)
{
    mV[VRED] = vec.mV[VRED];
    mV[VGREEN] = vec.mV[VGREEN];
    mV[VBLUE] = vec.mV[VBLUE];
    mV[VALPHA] = 255;
}
*/


// Clear and Assignment Functions



// LLColor4U Operators

/*
LLColor4U LLColor4U::operator=(const LLColor3 &a)
{
    mV[VRED] = a.mV[VRED];
    mV[VGREEN] = a.mV[VGREEN];
    mV[VBLUE] = a.mV[VBLUE];

// converting from an rgb sets a=1 (opaque)
    mV[VALPHA] = 255;
    return (*this);
}
*/


std::ostream& operator<<(std::ostream& s, const LLColor4U &a)
{
    s << "{ " << (S32)a.mV[VRED] << ", " << (S32)a.mV[VGREEN] << ", " << (S32)a.mV[VBLUE] << ", " << (S32)a.mV[VALPHA] << " }";
    return s;
}

// static
bool LLColor4U::parseColor4U(const std::string& buf, LLColor4U* value)
{
    if( buf.empty() || value == nullptr)
    {
        return false;
    }

    U32 v[4];
    S32 count = sscanf( buf.c_str(), "%u, %u, %u, %u", v + 0, v + 1, v + 2, v + 3 );
    if (1 == count )
    {
        // try this format
        count = sscanf( buf.c_str(), "%u %u %u %u", v + 0, v + 1, v + 2, v + 3 );
    }
    if( 4 != count )
    {
        return false;
    }

    for( S32 i = 0; i < 4; i++ )
    {
        if( v[i] > U8_MAX )
        {
            return false;
        }
    }

    value->set( U8(v[0]), U8(v[1]), U8(v[2]), U8(v[3]) );
    return true;
}