private IconDirectoryMember FindMember(IconDirectoryMember newMember)
{
foreach (IconDirectoryMember member in _members)
{
if (member.CompareTo(newMember) == 0)
{
return(member);
}
}
return(null);
}
///////////////////////////////////
public void Save(Stream stream)
{
BinaryWriter wtr = new BinaryWriter(stream);
// Write IconHeader ( IconDirectory )
wtr.Write((UInt16)0); // wReserved
wtr.Write((UInt16)(IsIcon ? 1 : 2)); // wType
wtr.Write((UInt16)this._members.Count); // wCount
// Write out the array of directory entries, calculating the offsets first
UInt32[] offsets = new UInt32[_members.Count];
UInt32 offsetFromEndOfDirectory =
(UInt32)stream.Position + (UInt32)(_members.Count * Marshal.SizeOf(typeof(FileIconDirectoryEntry)));
for (int i = 0; i < _members.Count; i++)
{
IconDirectoryMember m = _members[i] as IconDirectoryMember;
// Offset is from the start of the file
offsets[i] = offsetFromEndOfDirectory;
offsetFromEndOfDirectory += m.Size;
}
for (int i = 0; i < _members.Count; i++)
{
IconDirectoryMember member = _members[i] as IconDirectoryMember;
wtr.Write((Byte)member.Dimensions.Width);
wtr.Write((Byte)member.Dimensions.Height);
wtr.Write(member.ColorCount);
wtr.Write(member.Reserved);
wtr.Write(member.Planes);
wtr.Write(member.BitCount);
wtr.Write(member.Size);
wtr.Write(offsets[i]);
}
// Write out the actual images
for (int i = 0; i < _members.Count; i++)
{
IconDirectoryMember m = _members[i] as IconDirectoryMember;
wtr.Write(m.ResourceData.RawData);
}
// and we're done
}
public void RemoveMemberImage(IconDirectoryMember member)
{
if (_members.IndexOf(member) == -1)
{
return;
}
ResourceLang lang = member.ResourceData.Lang;
_members.Remove(member);
Source.Remove(lang);
}
public static void FromFile(Stream stream, UInt16 lang, ResourceSource source, ResIconDir resDir)
{
if (stream.Length < Marshal.SizeOf(typeof(IconDirectory)))
{
return;
}
BinaryReader rdr = new BinaryReader(stream);
IconDirectory?tDir = ReadIcoHeader(rdr);
if (tDir == null)
{
return;
}
IconDirectory dir = tDir.Value;
///////////////////////////////
// rdr is now at the beginning of the array of FileIconDirectoryMembers
FileIconDirectoryEntry[] subImages = new FileIconDirectoryEntry[dir.wCount];
for (int i = 0; i < dir.wCount; i++)
{
subImages[i] = ReadFileDirMember(rdr);
}
/////////////////////////////
// now for image data itself
IconImageResourceDataFactory factory = GetIconImageFactory();
for (int i = 0; i < dir.wCount; i++)
{
FileIconDirectoryEntry img = subImages[i];
stream.Seek(img.dwImageOffset, SeekOrigin.Begin);
Byte[] data = new Byte[img.dwBytesInRes];
stream.Read(data, 0, (int)img.dwBytesInRes);
Size dimensions = new Size(img.bWidth == 0 ? 256 : img.bWidth, img.bHeight == 0 ? 256 : img.bHeight);
IconCursorImageResourceData memberImageData = factory.FromResource(null, data) as IconCursorImageResourceData;
IconDirectoryMember member = new IconDirectoryMember(memberImageData, dimensions, img.bColorCount, img.bReserved, img.wPlanes, img.wBitCount, img.dwBytesInRes);
resDir.AddUpdateMemberImage(member);
}
}
///////////////////////////////////
public IconDirectoryMember GetIconForSize(Size size)
{
// search for an identical or larger match (larger results can be scaled down)
// sorted by size, then color depth; so the first dimensions match will be of the highest color depth
IconDirectoryMember[] sortedIcons = new IconDirectoryMember[_members.Count];
_members.CopyTo(sortedIcons, 0);
Array.Sort <IconDirectoryMember>(sortedIcons, delegate(IconDirectoryMember x, IconDirectoryMember y) {
// compare y to x because we want it in descending order
Int32 sizeComparison = y.Dimensions.Width.CompareTo(x.Dimensions.Width);
return(sizeComparison == 0 ? y.BitCount.CompareTo(x.BitCount) : sizeComparison);
});
IconDirectoryMember bestMatch = null;
foreach (IconDirectoryMember member in sortedIcons)
{
if (member.Dimensions == size)
{
return(member);
}
if (bestMatch == null)
{
bestMatch = member;
}
if (member.Dimensions.Width > size.Width)
{
if (bestMatch == null)
{
bestMatch = member;
}
else
{
if (member.Dimensions.Width < bestMatch.Dimensions.Width)
{
bestMatch = member;
}
}
}
}
return(bestMatch);
}
/// <summary>Adds or Updates (replaces) a member image. DO NOT USE to add an entry that already exists as part of a resource</summary>
public void AddUpdateMemberImage(IconDirectoryMember newMember)
{
// it is important to maintain order: color depth ascending then size descending.
// I've implemented this in IconDirectoryMember.CompareTo and called in GetRawData()
// first off, check if it's an add or an update by seeing if the specified member already exists
IconDirectoryMember orig = null;
if ((orig = FindMember(newMember)) != null)
{
// it already exists, so just update the associated ResourceLang
ResourceLang lang = orig.ResourceData.Lang;
lang.SwapData(newMember.ResourceData);
_members.Add(newMember);
_members.Remove(orig);
}
else
{
// it's new, so add it
if (IsIcon)
{
Source.Add(_iconImageTypeId, Source.GetUnusedName(_iconImageTypeId), Lang, newMember.ResourceData);
}
else
{
Source.Add(_cursorImageTypeId, Source.GetUnusedName(_iconImageTypeId), Lang, newMember.ResourceData);
}
_members.Add(newMember);
}
_updated = true;
}
internal void UnderlyingAdd(IconDirectoryMember existingMember)
{
_members.Add(existingMember);
}
