private static WriteableBitmap GetWriteableBitmapFromFile(string f)
{
var icon = GIconHelper.GetFileIcon(f, false).ToBitmap();
IntPtr hBitmap = icon.GetHbitmap();
BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
bitmapSource.Freeze();
WriteableBitmap writeableBmp = new WriteableBitmap(bitmapSource);
icon.Dispose();
return(writeableBmp);
}
private static BitmapSource GetBitmapFromFileNoCache(string f, int level)
{
Logger.I("GetBitmapFromFileNoCache for {0} level {1}", f, level);
if (level > 5)
{
return(null); //防止递归调用死循环，将堆栈耗尽
}
if (PathHelper.IsValidWebLink(f))
{
return(GetBitmapFromFileNoCache(CfgPath.Res_HTTP_Path, level + 1));
}
else if (PathHelper.IsValidFS(f))
{
try
{
Logger.I(" isvalidfs try GetBitmapFromFileNoCache for {0} level {1}", f, level);
Icon ic = GIconHelper.GetFileIcon(f, false);
if (ic == null)
{
Logger.I("GetBitmapFromFileNoCache failed: ic==null for {0} level {1}", f, level);
return(null);
}
var icon = ic.ToBitmap();
IntPtr hBitmap = icon.GetHbitmap();
BitmapSource bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
bitmapSource.Freeze();
icon.Dispose();
return(bitmapSource);
}
catch (Exception e)
{
Logger.E(e);
Logger.E("get icon failed!======{0}", f);
if (f != CfgPath.Res_UNKNOW_Path)
{
return(GetBitmapFromFileNoCache(CfgPath.Res_UNKNOW_Path, level + 1));
}
else
{
return(null);
}
}
}
else
{
return(GetBitmapFromFileNoCache(CfgPath.Res_UNKNOW_Path, level + 1));
}
}