////////////////////////////////////////////////////////////////////////////////
//
//      File: LoadPalette.cpp
//
//      Date: December 1999
//
//      Author: Daniel Switkin
//
//      Copyright 2003 (c) by Daniel Switkin. This file is made publically available
//      under the BSD license, with the stipulations that this complete header must
//      remain at the top of the file indefinitely, and credit must be given to the
//      original author in any about box using this software.
//
////////////////////////////////////////////////////////////////////////////////

// Additional authors:  John Scipione, <jscipione@gmail.com>


#include "LoadPalette.h"

#include <GraphicsDefs.h>
#include <ByteOrder.h>


LoadPalette::LoadPalette() {
        backgroundindex = 0;
        usetransparent = false;
        transparentindex = 0;
        size = size_in_bits = 0;
}


uint32
LoadPalette::ColorForIndex(int index)
{
        // never index into pal directly - this function is safe
        if (index >= 0 && index <= size) {
                if (usetransparent && index == transparentindex)
                        return B_TRANSPARENT_MAGIC_RGBA32;
                else
                        return data[index];
        } else
                return B_BENDIAN_TO_HOST_INT32(0x000000ff);
}


void
LoadPalette::SetColor(int index, uint8 red, uint8 green, uint8 blue)
{
        if (index < 0 || index > 255)
                return;

        data[index] = (blue << 24) + (green << 16) + (red << 8) + 0xff;
        data[index] = B_BENDIAN_TO_HOST_INT32(data[index]);
}