95 lines
2.6 KiB
C#
95 lines
2.6 KiB
C#
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/////////////////////////////////////////////////////////////////////////////////
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//
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// Photoshop PSD FileType Plugin for Paint.NET
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// http://psdplugin.codeplex.com/
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//
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// This software is provided under the MIT License:
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// Copyright (c) 2006-2007 Frank Blumenberg
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// Copyright (c) 2010-2015 Tao Yue
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//
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// See LICENSE.txt for complete licensing and attribution information.
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//
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/////////////////////////////////////////////////////////////////////////////////
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using System;
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namespace PhotoshopFile
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{
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internal enum LayerSectionType
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{
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Layer = 0,
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OpenFolder = 1,
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ClosedFolder = 2,
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SectionDivider = 3
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}
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internal enum LayerSectionSubtype
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{
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Normal = 0,
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SceneGroup = 1
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}
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/// <summary>
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/// Layer sections are known as Groups in the Photoshop UI.
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/// </summary>
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internal class LayerSectionInfo : 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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public LayerSectionType SectionType { get; set; }
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private LayerSectionSubtype? subtype;
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public LayerSectionSubtype Subtype
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{
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get { return subtype ?? LayerSectionSubtype.Normal; }
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set { subtype = value; }
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}
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private string blendModeKey;
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public string BlendModeKey
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{
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get { return blendModeKey; }
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set
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{
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if (value.Length != 4)
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{
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throw new ArgumentException(
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"BlendModeKey must be 4 characters in length.");
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}
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blendModeKey = value;
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}
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}
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public LayerSectionInfo(PsdBinaryReader reader, string key, int dataLength)
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{
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// The key for layer section info is documented to be "lsct". However,
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// some Photoshop files use the undocumented key "lsdk", with apparently
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// the same data format.
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this.key = key;
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SectionType = (LayerSectionType)reader.ReadInt32();
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if (dataLength >= 12)
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{
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var signature = reader.ReadAsciiChars(4);
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if (signature != "8BIM")
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throw new PsdInvalidException("Invalid section divider signature.");
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BlendModeKey = reader.ReadAsciiChars(4);
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if (dataLength >= 16)
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{
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Subtype = (LayerSectionSubtype)reader.ReadInt32();
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}
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}
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}
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}
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}
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