public override PreviewBitmapResult GetPreviewBitmap(ref string remoteName, int width, int height,
out Bitmap returnedBitmap)
{
string[] images = new[] { "Blue hills.jpg", "Sunset.jpg", "Water lilies.jpg", "Winter.jpg" };
string imageFolder = Settings["iconFolder"];
returnedBitmap = null;
PreviewBitmapResult result = PreviewBitmapResult.None;
string bitmapFile;
remoteName = remoteName.Substring(1);
if (remoteName.EndsWith(@"..\"))
{
return(PreviewBitmapResult.None);
}
if (Directory.Exists(remoteName))
{
int imgIndex = rnd.Next(4);
bitmapFile = Path.Combine(imageFolder, images[imgIndex]);
Image img = Image.FromFile(bitmapFile);
returnedBitmap = new Bitmap(img, width / rnd.Next(1, 3), height / rnd.Next(1, 3));
result = PreviewBitmapResult.Extracted;
}
else if (File.Exists(remoteName))
{
string extension = Path.GetExtension(remoteName);
if (extension != null)
{
if (extension.ToUpper().Equals(".TXT"))
{
bitmapFile = "logo_large.gif";
remoteName = Path.Combine(imageFolder, bitmapFile);
result = PreviewBitmapResult.ExtractYourself;
}
else if (extension.ToUpper().Equals(".EXE"))
{
bitmapFile = "Exe_Bmp.png";
string tmpFile = Path.Combine(Environment.ExpandEnvironmentVariables("%TEMP%"), bitmapFile);
try {
File.Copy(Path.Combine(imageFolder, bitmapFile), tmpFile, false);
} catch (Exception) {
}
remoteName = tmpFile;
result = PreviewBitmapResult.ExtractYourselfAndDelete;
}
}
result = result | PreviewBitmapResult.Cache;
}
return(result);
}
public PreviewBitmapResult GetPreviewBitmap(WsPath filePath, int width, int height)
{
try
{
return(ExecuteAsync(filePath, async() =>
{
WsFile file = await _apiClient.FindFile(filePath.GetFilePath());
if (file != null)
{
WsFolder folder = await _apiClient.FindFolder(filePath.Parent.GetFolderPath());
if (folder != null)
{
WsFilePreview filePreview = await _filesPreviewCache.FindFilePreview(folder, filePath.Name);
byte[] jpgData = await filePreview.JpgData;
if (jpgData?.Length > 0)
{
using (MemoryStream jpgStream = new MemoryStream(jpgData))
{
Image jpg = Image.FromStream(jpgStream);
decimal ratio = (decimal)jpg.Width / jpg.Height;
if (ratio > 1)
{
height = (int)(height / ratio);
}
if (ratio < 1)
{
width = (int)(width / ratio);
}
Bitmap bmp = new Bitmap(jpg, width, height);
return PreviewBitmapResult.Extracted(bmp, null, false);
}
}
}
}
return PreviewBitmapResult.None;
}));
}
catch
{
return(PreviewBitmapResult.None);
}
}
