public IconLocation(string fileName, int index, GILI iconFlags, SHIL size)
{
FileName = string.Intern(Path.GetFullPath(fileName));
Index = index;
IconFlags = iconFlags;
Size = size;
}
private ImageSource GetIcon(SHIL iconSize, GILI iconAttrs)
{
int iconIndex = GetIconIndex(iconAttrs);
return(iconIndex != UnindexableIconIndex
? _tree.IconList.GetIconByIndex(iconSize, iconIndex)
: _tree.IconList.ExtractIcon(ParentShellFolder, _pidl, iconSize, iconAttrs));
}
public int GetIconOf([In] PIDLIST pidl, [In] GILI flags)
{
int iconIndex;
HRESULT hr = Com.GetIconOf(pidl, flags, out iconIndex);
if (hr == HRESULT.S_FALSE)
{
return(ShellItem.NoIconIndex);
}
hr.ThrowIfFailed();
return(iconIndex);
}
public bool?GetIconLocation(GILI inFlags, out string iconFile, out int iconIndex, out GILR resFlags)
{
var sb = new StringBuilder(Native.MAX_PATH);
HRESULT hr = Com.GetIconLocation(inFlags, sb, sb.Capacity, out iconIndex, out resFlags);
iconFile = sb.ToString();
if (hr == HRESULT.S_FALSE)
{
return(false);
}
else if (hr == HRESULT.E_PENDING)
{
return(null);
}
hr.ThrowIfFailed();
return(true);
}
private int GetIconIndex(GILI iconAttrs)
{
if (_iconIndex != UndefinedIconIndex)
{
return(_iconIndex);
}
if (IsDesktop)
{
using (PIDLIST desktopPidl = Native.SHGetKnownFolderIDList(FOLDERID.Desktop))
return(_iconIndex = Native.SHGetFileInfo(desktopPidl, SHGFI.SYSICONINDEX).iIcon);
}
Dispatcher.InvokeAsync(
() => {
int iconIndex;
using (NativeShellIcon shellIcon = ParentShellFolder.QueryInterface <IShellIcon>().ToNative())
iconIndex = shellIcon != null ? _tree.IconList.GetIconIndex(shellIcon, _pidl, iconAttrs) : UnindexableIconIndex;
Set(ref _iconIndex, iconIndex, "IconSmall", "IconLarge", "IconExtraLarge", "IconJumbo");
},
DispatcherPriority.Background);
return(NoIconIndex);
}
public ImageSource GetIcon(NativeShellIcon shellIcon, PIDLIST pidl, SHIL iconSize, GILI iconFlags)
{
return(GetIconByIndex(iconSize, GetIconIndex(shellIcon, pidl, iconFlags)));
}
public int GetIconIndex(NativeShellIcon shellIcon, PIDLIST pidl, GILI iconFlags)
{
return(shellIcon.GetIconOf(pidl, iconFlags));
}
private ImageSource ExtractIcon(NativeShellFolder shellFolder, PIDLIST pidl, int iconSize, GILI iconFlags)
{
using (NativeExtractIcon extractIcon = shellFolder.GetUIObjectOf <IExtractIcon>(pidl).ToNative()) {
string iconFile;
int iconIndex;
GILR iconResultFlags;
if (!extractIcon.GetIconLocation(iconFlags, out iconFile, out iconIndex, out iconResultFlags).GetValueOrDefault())
{
return(null); // TODO return default icon, schedule async icon extraction
}
HICON hicon;
// TODO check cache
/*if (!iconResultFlags.Has(GILR.NOTFILENAME))
* Native.PrivateExtractIcons(iconFile, iconIndex, iconSize, out hicon, LR.LOADFROMFILE);*/
if (!extractIcon.Extract(iconFile, iconIndex, (ushort)iconSize, out hicon) && !iconResultFlags.Has(GILR.NOTFILENAME))
{
Native.PrivateExtractIcons(iconFile, iconIndex, iconSize, out hicon, LR.LOADFROMFILE);
}
if (hicon == IntPtr.Zero)
{
return(null);
}
return(Native.CreateBitmapSourceFromHIcon(hicon));
}
}
public ImageSource ExtractIcon(NativeShellFolder shellFolder, PIDLIST pidl, SHIL iconSize, GILI iconFlags)
{
return(ExtractIcon(shellFolder, pidl, IconSizeToPixels(iconSize), iconFlags));
}
