void _AutoUpdateSingle(_AUData k)
{
//FUTURE: optimize.
// Don't load ico/exe file if not modified.
// Don't do too frequently for same file.
// Skip duplicate paths.
// Don't do for files where getting icon is very slow.
if (!_LoadImage(out var b, k.file, k.giFlags, k.callback))
{
return;
}
if (b == k.oldImage)
{
return; //callback returned the same object
}
if (_CompareImages(b, k.oldImage))
{
if (k.canDispose)
{
b.Dispose();
}
return;
}
lock (this) _AddImage(k.file, b, true);
//k.autoUpdated?.Invoke(b, k.auParam);
//AOutput.Write(k.auParam);
//APerf.First();
k.autoUpdated?.Invoke(b, k.auParam);
//APerf.NW();
}
static void _AutoUpdateAdd(_AUData d)
{
if (t_auTimer == null)
{
t_auTimer = new ATimer(t => _AutoUpdateTimer());
t_auList = new Queue <_AUData>();
}
t_auList.Enqueue(d);
t_auTimer.Every(50);
}
Bitmap _GetImage(string file, IconGetFlags giFlags, Func <Bitmap> callback, Action <Bitmap, object> autoUpdate, object auParam, bool auDispose)
{
bool cached = true;
lock (this) {
Bitmap R = null;
//is in memory cache?
if (_table == null)
{
_table = new Hashtable(StringComparer.OrdinalIgnoreCase);
}
else
{
R = _table[file] as Bitmap;
}
if (R == null)
{
//is in file cache?
try {
if (_x == null && AFile.ExistsAsFile(_cacheFile))
{
_x = AExtXml.LoadElem(_cacheFile);
if (_iconSize != _x.Attr("size", 0) || ADpi.BaseDPI != _x.Attr("dpi", 0))
{
_x = null;
ADebug.Print("info: cleared icon cache");
}
//FUTURE: Delete unused entries. Maybe try to auto-update changed icons.
// Not very important, because there is ClearCache.
}
if (_x != null)
{
var x = _x.Elem("i", "name", file, true);
if (x != null)
{
using var ms = new MemoryStream(Convert.FromBase64String(x.Value), false);
R = new Bitmap(ms);
}
}
}
catch (Exception ex) {
ADebug.Print(ex.Message);
}
if (R != null)
{
_table[file] = R; //add to memory cache
}
else if (_LoadImage(out R, file, giFlags, callback)) //get file icon
{
_AddImage(file, R, false); //add to file cache and memory cache
cached = false;
}
}
//auto-update
if (cached && autoUpdate != null)
{
var d = new _AUData()
{
cache = this, oldImage = R, file = file, callback = callback,
autoUpdated = autoUpdate, auParam = auParam, giFlags = giFlags, canDispose = auDispose,
};
_AutoUpdateAdd(d);
}
return(R);
}
}
