72 lines
2.0 KiB
C#
72 lines
2.0 KiB
C#
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/////////////////////////////////////////////////////////////////////////////////
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// Author : leoyaik@unity3d.com
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/////////////////////////////////////////////////////////////////////////////////
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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namespace PhotoshopFile
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{
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/// <summary>
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/// Layers that are stored as Additional Info, rather than in the main
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/// Layers section of the PSD file.
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/// </summary>
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/// <remarks>
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/// Photoshop stores layers in the Additional Info section for 16-bit and
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/// 32-bit depth images. The Layers section in the PSD file is left empty.
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///
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/// This appears to be for backward-compatibility purposes, but it is not
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/// required. Photoshop will successfully load a high-bitdepth image that
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/// puts the layers in the Layers section.
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/// </remarks>
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internal class LayerId : LayerInfo
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{
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public override string Signature
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{
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get { return "8BIM"; }
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}
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private string key;
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public override string Key
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{
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get { return key; }
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}
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private int id = 0;
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public int ID
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{
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get { return id; }
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}
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public LayerId(string key)
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{
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switch (key)
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{
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// The key does not have to match the bit depth, but it does have to
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// be one of the known values.
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case "lyid":
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case "lnsr":
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this.key = key;
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break;
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default:
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throw new PsdInvalidException(
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"LayerId key should be lyid or lnsr");
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}
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}
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public LayerId(PsdBinaryReader reader,
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string key, long dataLength)
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: this(key)
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{
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if (dataLength == 4)
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id = reader.ReadInt32();
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else
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throw new PsdInvalidException("LayerId data length should be 4");
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}
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}
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}
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