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/*
* GNU AFFERO GENERAL PUBLIC LICENSE
* Version 3, 19 November 2007
* Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
* Everyone is permitted to copy and distribute verbatim copies
* of this license document, but changing it is not allowed.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using PrusaSL1Reader.Extensions;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
namespace PrusaSL1Reader
{
public class LayerManager : IEnumerable<LayerManager.Layer>
{
#region Layer Class
/// <summary>
/// Represent a Layer
/// </summary>
public class Layer : IEquatable<Layer>, IEquatable<uint>
{
#region Properties
/// <summary>
/// Gets the layer index
/// </summary>
public uint Index { get; }
private byte[] _rawData;
/// <summary>
/// Gets or sets layer image compressed data
/// </summary>
public byte[] RawData
{
get => DecompressLayer(_rawData);
set { _rawData = CompressLayer(value); IsModified = true; }
}
/// <summary>
/// Gets the original filename, null if no filename attached with layer
/// </summary>
public string Filename { get; set; }
/// <summary>
/// Gets if layer has been modified
/// </summary>
public bool IsModified { get; set; }
/// <summary>
/// Gets or sets a new image instance
/// </summary>
public Image<L8> Image
{
get => SixLabors.ImageSharp.Image.Load<L8>(RawData);
set
{
using (MemoryStream stream = new MemoryStream())
{
value.Save(stream, Helpers.PngEncoder);
RawData = stream.ToArray();
}
}
}
#endregion
#region Constructor
public Layer(uint index, byte[] rawData, string filename = null)
{
Index = index;
RawData = rawData;
Filename = filename ?? $"Layer{index}.png";
IsModified = false;
}
public Layer(uint index, Image<L8> image, string filename = null) : this(index, new byte[0], filename)
{
Image = image;
IsModified = false;
}
public Layer(uint index, Stream stream, string filename = null) : this(index, stream.ToArray(), filename)
{ }
#endregion
#region Equatables
public static bool operator ==(Layer obj1, Layer obj2)
{
return obj1.Equals(obj2);
}
public static bool operator !=(Layer obj1, Layer obj2)
{
return !obj1.Equals(obj2);
}
public static bool operator >(Layer obj1, Layer obj2)
{
return obj1.Index > obj2.Index;
}
public static bool operator <(Layer obj1, Layer obj2)
{
return obj1.Index < obj2.Index;
}
public static bool operator >=(Layer obj1, Layer obj2)
{
return obj1.Index >= obj2.Index;
}
public static bool operator <=(Layer obj1, Layer obj2)
{
return obj1.Index <= obj2.Index;
}
public bool Equals(uint other)
{
return Index == other;
}
public bool Equals(Layer other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return Equals(_rawData, other._rawData);
}
public override bool Equals(object obj)
{
if (ReferenceEquals(null, obj)) return false;
if (ReferenceEquals(this, obj)) return true;
if (obj.GetType() != this.GetType()) return false;
return Equals((Layer) obj);
}
public override int GetHashCode()
{
return (_rawData != null ? _rawData.GetHashCode() : 0);
}
private sealed class IndexRelationalComparer : IComparer<Layer>
{
public int Compare(Layer x, Layer y)
{
if (ReferenceEquals(x, y)) return 0;
if (ReferenceEquals(null, y)) return 1;
if (ReferenceEquals(null, x)) return -1;
return x.Index.CompareTo(y.Index);
}
}
public static IComparer<Layer> IndexComparer { get; } = new IndexRelationalComparer();
#endregion
#region Formaters
public override string ToString()
{
return $"{nameof(Filename)}: {Filename}, {nameof(IsModified)}: {IsModified}";
}
#endregion
#region Methods
public Layer Clone()
{
return new Layer(Index, RawData, Filename);
}
#endregion
}
#endregion
#region Properties
/// <summary>
/// Layers List
/// </summary>
public Layer[] Layers { get; }
/// <summary>
/// Gets the layers count
/// </summary>
public uint Count => (uint) Layers.Length;
/// <summary>
/// Gets if any layer got modified, otherwise false
/// </summary>
public bool IsModified
{
get
{
for (uint i = 0; i < Count; i++)
{
if (Layers[i].IsModified) return true;
}
return false;
}
}
#endregion
#region Constructors
public LayerManager(uint layerCount)
{
Layers = new Layer[layerCount];
}
#endregion
#region Indexers
public Layer this[uint index]
{
get => Layers[index];
set => Layers[index] = value;
}
public Layer this[int index]
{
get => Layers[index];
set => Layers[index] = value;
}
public Layer this[long index]
{
get => Layers[index];
set => Layers[index] = value;
}
#endregion
#region Numerators
public IEnumerator<Layer> GetEnumerator()
{
return ((IEnumerable<Layer>)Layers).GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
#region Static Methods
/// <summary>
/// Compress a layer from a <see cref="Stream"/>
/// </summary>
/// <param name="input"><see cref="Stream"/> to compress</param>
/// <returns>Compressed byte array</returns>
public static byte[] CompressLayer(Stream input)
{
return CompressLayer(input.ToArray());
}
/// <summary>
/// Compress a layer from a byte array
/// </summary>
/// <param name="input">byte array to compress</param>
/// <returns>Compressed byte array</returns>
public static byte[] CompressLayer(byte[] input)
{
return input;
/*using (MemoryStream output = new MemoryStream())
{
using (DeflateStream dstream = new DeflateStream(output, CompressionLevel.Optimal))
{
dstream.Write(input, 0, input.Length);
}
return output.ToArray();
}*/
}
/// <summary>
/// Decompress a layer from a byte array
/// </summary>
/// <param name="input">byte array to decompress</param>
/// <returns>Decompressed byte array</returns>
public static byte[] DecompressLayer(byte[] input)
{
return input;
/*using (MemoryStream ms = new MemoryStream(input))
{
using (MemoryStream output = new MemoryStream())
{
using (DeflateStream dstream = new DeflateStream(ms, CompressionMode.Decompress))
{
dstream.CopyTo(output);
}
return output.ToArray();
}
}*/
}
#endregion
#region Methods
/// <summary>
/// Desmodify all layers
/// </summary>
public void Desmodify()
{
for (uint i = 0; i < Count; i++)
{
Layers[i].IsModified = false;
}
}
/// <summary>
/// Clone this object
/// </summary>
/// <returns></returns>
public LayerManager Clone()
{
LayerManager layerManager = new LayerManager(Count);
foreach (var layer in this)
{
layerManager[layer.Index] = layer.Clone();
}
return layerManager;
}
#endregion
}
}
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