const int sICONDIRENTRY = 16; // sizeof(ICONDIRENTRY)
public List <IconFrame> SplitIcon(sd.Icon icon)
{
if (frames != null)
{
return(frames);
}
if (icon == null)
{
throw new ArgumentNullException("icon");
}
// Get multiple .ico file image.
byte[] srcBuf;
using (var stream = new MemoryStream())
{
icon.Save(stream);
stream.Flush();
srcBuf = stream.ToArray();
}
var splitIcons = new List <sd.Icon>();
int count = BitConverter.ToInt16(srcBuf, 4); // ICONDIR.idCount
for (int i = 0; i < count; i++)
{
using (var destStream = new MemoryStream())
using (var writer = new BinaryWriter(destStream))
{
// Copy ICONDIR and ICONDIRENTRY.
int pos = 0;
writer.Write(srcBuf, pos, sICONDIR - 2);
writer.Write((short)1); // ICONDIR.idCount == 1;
pos += sICONDIR;
pos += sICONDIRENTRY * i;
writer.Write(srcBuf, pos, sICONDIRENTRY - 4); // write out icon info (minus old offset)
writer.Write(sICONDIR + sICONDIRENTRY); // write offset of icon data
pos += 8;
// Copy picture and mask data.
int imgSize = BitConverter.ToInt32(srcBuf, pos); // ICONDIRENTRY.dwBytesInRes
pos += 4;
int imgOffset = BitConverter.ToInt32(srcBuf, pos); // ICONDIRENTRY.dwImageOffset
if (imgOffset + imgSize > srcBuf.Length)
{
throw new ArgumentException("ugh");
}
writer.Write(srcBuf, imgOffset, imgSize);
writer.Flush();
// Create new icon.
destStream.Seek(0, SeekOrigin.Begin);
splitIcons.Add(new sd.Icon(destStream));
}
}
frames = splitIcons.Select(r => IconFrame.FromControlObject(1, r)).ToList();
return(frames);
}
void CreateFrames(MemoryStream input)
{
frames = new List <IconFrame>();
foreach (var pb in SplitIcon(input))
{
frames.Add(IconFrame.FromControlObject(1, new Bitmap(new BitmapHandler(pb))));
}
}
IEnumerable <IconFrame> GetFrames()
{
foreach (var rep in Control.Representations())
{
var img = new NSImage();
img.AddRepresentation(rep);
yield return(IconFrame.FromControlObject(1, new Bitmap(new BitmapHandler(img))));
}
}
protected override void Initialize()
{
base.Initialize();
if (iconFrames == null)
{
// create frames
iconFrames = Frames.Select(r => IconFrame.FromControlObject(1f, new Bitmap(new BitmapHandler(r)))).ToList();
}
}
void SetFrames(MemoryStream ms)
{
var icons = SplitIcon(Control, ms);
frames = new List <IconFrame>();
foreach (var icon in icons)
{
frames.Add(IconFrame.FromControlObject(1f, new Bitmap(new BitmapHandler(icon))));
}
}
void SetFrames()
{
_frames = new List <IconFrame>();
foreach (var rep in Control.Representations())
{
var img = new NSImage();
img.AddRepresentation(rep);
_frames.Add(IconFrame.FromControlObject(1, new Bitmap(new BitmapHandler(img))));
}
}
IEnumerable <IconFrame> GetFrames()
{
var icons = Control?.Decoder?.Frames;
if (icons == null)
{
yield return(IconFrame.FromControlObject(1f, new Bitmap(new BitmapHandler(Control))));
yield break;
}
foreach (var icon in icons)
{
// this is needed to actually load the icon so it can then be used in other threads.
// even though we freeze it, it delays the creation until something like this is called..
_ = icon.PixelWidth;
yield return(IconFrame.FromControlObject(1f, new Bitmap(new BitmapHandler(icon))));
}
}