protected override void WriteData(PsdBinaryWriter writer)
{
var startPosition = writer.BaseStream.Position;
writer.WriteUnicodeString(Name);
writer.WritePadding(startPosition, 4);
}
public void Save(PsdBinaryWriter writer, Boolean globalLayerInfo,
Boolean isLargeDocument)
{
Util.DebugMessage(writer.BaseStream, "Save, Begin, LayerInfo, {0}, {1}",
Signature, Key);
writer.WriteAsciiChars(Signature);
writer.WriteAsciiChars(Key);
var startPosition = writer.BaseStream.Position;
using (var lengthWriter = new PsdBlockLengthWriter(writer,
LayerInfoUtil.HasLongLength(Key, isLargeDocument)))
{
// Depending on the key, the length may be unpadded, 2-padded, or
// 4-padded. Thus, it is up to each implementation of WriteData to
// pad the length correctly.
WriteData(writer);
}
// Data for global layer info is always padded to a multiple of 4,
// even if this causes the stated length to be incorrect.
if (globalLayerInfo)
{
writer.WritePadding(startPosition, 4);
}
Util.DebugMessage(writer.BaseStream, "Save, End, LayerInfo, {0}, {1}",
Signature, Key);
}
/// <summary>
/// Write out the image resource block: header and data.
/// </summary>
public void Save(PsdBinaryWriter writer)
{
Util.DebugMessage(writer.BaseStream, "Save, Begin, ImageResource");
writer.WriteAsciiChars(Signature);
writer.Write((UInt16)ID);
writer.WritePascalString(Name, 2);
// Length is unpadded, but data is even-padded
var startPosition = writer.BaseStream.Position;
using (new PsdBlockLengthWriter(writer))
{
WriteData(writer);
}
writer.WritePadding(startPosition, 2);
Util.DebugMessage(writer.BaseStream, "Save, End, ImageResource, {0}", ID);
}
///////////////////////////////////////////////////////////////////////////
private void SaveLayerAndMaskInfo(PsdBinaryWriter writer)
{
Util.DebugMessage(writer.BaseStream, "Save, Begin, Layer and mask info");
using (new PsdBlockLengthWriter(writer, IsLargeDocument))
{
var startPosition = writer.BaseStream.Position;
SaveLayers(writer);
SaveGlobalLayerMask(writer);
foreach (var info in AdditionalInfo)
{
info.Save(writer,
globalLayerInfo: true,
isLargeDocument: IsLargeDocument);
}
writer.WritePadding(startPosition, 2);
}
Util.DebugMessage(writer.BaseStream, "Save, End, Layer and mask info");
}
/// <summary>
/// Saves the Layers Info section, including headers and padding.
/// </summary>
/// <param name="writer">The PSD writer.</param>
internal void SaveLayers(PsdBinaryWriter writer)
{
Util.DebugMessage(writer.BaseStream, "Save, Begin, Layers Info section");
using (new PsdBlockLengthWriter(writer, IsLargeDocument))
{
var startPosition = writer.BaseStream.Position;
// Only one set of Layers can exist in the file. If layers will be
// written to the Additional Info section, then the Layers section
// must be empty to avoid conflict.
var hasInfoLayers = AdditionalInfo.Exists(x => x is InfoLayers);
if (!hasInfoLayers)
{
SaveLayersData(writer);
}
// Documentation states that the Layers Info section is even-padded,
// but it is actually padded to a multiple of 4.
writer.WritePadding(startPosition, 4);
}
Util.DebugMessage(writer.BaseStream, "Save, End, Layers Info section");
}