//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="ImageHelper.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. All rights reserved.
//     
//     Permission is hereby granted, free of charge, to any person 
//     obtaining a copy of this software and associated documentation 
//     files (the “Software”), to deal in the Software without restriction, 
//     including without limitation the rights to use, copy, modify, merge,
//     publish, distribute, sublicense, and/or sell copies of the Software, 
//     and to permit persons to whom the Software is furnished to do so, 
//     subject to the following conditions:
//     
//     The above copyright notice and 
//     this permission notice shall be included in all copies 
//     or substantial portions of the Software.
//     
//     THE SOFTWARE IS PROVIDED “AS IS”, 
//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;

namespace StgSharp.Graphics
{
    public static class ImageHelper
    {

        public static void Resize( Image i, int width, int height, ImageMovement move )
        {
            if( i == null ) {
                throw new ArgumentNullException( nameof( i ) );
            }
            if( i.Size == (width, height) ) {
                return;
            }
            if( !Enum.IsDefined( typeof( ImageMovement ), move ) ) {
                throw new InvalidEnumArgumentException( nameof( move ) );
            }
            byte[] oldData = i.Data;
            i.Data = new byte[width * height * i.PixelSize];
            i.Height = height;
            i.Width = width;
            i.PixelUpdateCount++;
            switch( move )
            {
                case ImageMovement.Discard:
                    break;
                case ImageMovement.Top:
                    break;
                default:
                    throw new NotImplementedException();
            }
        }

    }

    [Flags]
    public enum ImageMovement
    {
#pragma warning disable CA1008 
        Discard = 0,
        #pragma warning restore CA1008 
        Top = 1,
        Bottom = 2,
        Left = 4,
        Right = 8,
        TopLeft = Top | Left,
        BottomLeft = Bottom | Left,
        TopRight = Top | Right,
        BottomRight = Bottom | Right,

    }
}