/// <summary>
/// 创建缩略图。
/// </summary>
/// <param name="store"></param>
/// <param name="ls"></param>
/// <param name="wf"></param>
/// <param name="w"></param>
/// <param name="h"></param>
/// <returns></returns>
public static Image CreateThumbnail(LocalStudentWorkStore store, LocalStudent ls, LocalStudentWorkFile wf, int w, int h)
{
if (store != null && ls != null && wf != null)
{
try
{
string root = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures) + "\\SFIT_TeaClient\\" + store.TeacherID + "_" + store.CatalogID;
if (!Directory.Exists(root)) Directory.CreateDirectory(root);
string path = Path.GetFullPath(string.Format("{0}\\{1}_{2}_{3}x{4}.jpg", root, ls.StudentID, wf.FileID, w, h));
if (File.Exists(path)) return Image.FromFile(path);
if (DefaultThumbnailFormat.IsExistThumbnailFormat(wf.FileExt))
{
string source = ls.Work.StudentWorkFilePath(store, ls, wf);
if (File.Exists(source))
{
Image img = ImageHelper.MakeThumbnail(Image.FromFile(source), w, h);
if (img != null)
{
img.Save(path, System.Drawing.Imaging.ImageFormat.Jpeg);
return img;
}
}
}
}
catch (Exception e)
{
UtilTools.OnExceptionRecord(e, typeof(ThumbnailsHelpers));
}
}
return null;
}
/// <summary>
/// 获取学生作品路径。
/// </summary>
/// <param name="store"></param>
/// <param name="ls"></param>
/// <param name="workFile"></param>
/// <returns></returns>
public string StudentWorkFilePath(LocalStudentWorkStore store, LocalStudent ls, LocalStudentWorkFile workFile)
{
if (store != null && ls != null && workFile != null)
{
string rootDir = store.RootDir();
if (!string.IsNullOrEmpty(rootDir) && Directory.Exists(rootDir))
{
string dir = Path.GetFullPath(string.Format("{0}/{1}", rootDir, ls.StudentID));
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
return Path.GetFullPath(string.Format("{0}/{1}{2}", dir, workFile.FileID, workFile.FileExt));
}
}
return null;
}
/// <summary>
/// 保存数据。
/// </summary>
/// <param name="store">学生作品存储。</param>
/// <param name="ls">学生信息。</param>
/// <param name="files">文件数据。</param>
public void SaveFiles(LocalStudentWorkStore store, LocalStudent ls, StudentWorkFiles files)
{
if (store != null && ls != null && files != null && files.Count > 0)
{
if (this.WorkFiles == null)
this.WorkFiles = new LocalStudentWorkFiles();
else
this.WorkFiles.Clear();
for (int i = 0; i < files.Count; i++)
{
StudentWorkFile swf = files[i];
if (swf.Data != null && swf.Data.Length > 0)
{
LocalStudentWorkFile file = new LocalStudentWorkFile();
file.FileID = swf.FileID;
file.FileName = Path.GetFileNameWithoutExtension(swf.FileName);
file.FileExt = swf.FileExt;
file.Size = swf.Size > 0 ? swf.Size : swf.Data.Length;
if (this.FileExt == null)
this.FileExt = file.FileExt;
else if (this.FileExt.IndexOf(file.FileExt) == -1)
this.FileExt += string.Format("|{0}", file.FileExt);
string path = this.StudentWorkFilePath(store, ls, file);
if (!string.IsNullOrEmpty(path))
{
using (FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write))
{
fs.Write(swf.Data, 0, swf.Data.Length);
}
this.WorkFiles.Add(file);
}
}
}
}
}
/// <summary>
/// 恢复作业关联。
/// </summary>
public static void RecoveryWorkAssociation(ref LocalStudentWorkStore store, string studentId)
{
if (store == null || store.Students == null || store.Students.Count == 0 || string.IsNullOrEmpty(studentId)) return;
LocalStudent ls = store.Students[studentId];
if (ls == null || ls.HasWork()) return;
string dir = Path.GetFullPath(string.Format("{0}/{1}", store.RootDir(), ls.StudentID));
if (!Directory.Exists(dir)) return;
FileInfo[] files = new DirectoryInfo(dir).GetFiles();
if (files == null || files.Length == 0) return;
ls.Work = new LocalStudentWork();
ls.Work.WorkID = Guid.NewGuid().ToString().Replace("-", "");
ls.Work.WorkName = store.CatalogName;
ls.Work.UploadIP = "127.0.0.1";
ls.Work.Type = EnumWorkType.Public;
ls.Work.Time = DateTime.Now;
ls.Work.Status = EnumWorkStatus.Recive | EnumWorkStatus.Submit;
ls.Work.Description = new CDATA();
ls.Work.WorkFiles = new LocalStudentWorkFiles();
for (int i = 0; i < files.Length; i++)
{
if (files[i].Exists)
{
LocalStudentWorkFile file = new LocalStudentWorkFile();
file.FileID = Path.GetFileNameWithoutExtension(files[i].Name);
file.FileName = ls.Work.WorkName + "_" + (i + 1);
file.FileExt = files[i].Extension;
file.Size = files[i].Length;
if (ls.Work.FileExt == null)
ls.Work.FileExt = file.FileExt;
else if (ls.Work.FileExt.IndexOf(file.FileExt) == -1)
ls.Work.FileExt += string.Format("|{0}", file.FileExt);
ls.Work.WorkFiles.Add(file);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="zipWorkPath"></param>
/// <param name="store"></param>
/// <param name="ls"></param>
/// <param name="lsw"></param>
/// <param name="handler"></param>
private void ImportWorkFiles(string zipWorkPath, LocalStudentWorkStore store, LocalStudent ls, LocalStudentWork lsw, RaiseChangedHandler handler)
{
if (this.zipFile != null && !string.IsNullOrEmpty(zipWorkPath))
{
Stream stream = stream = ZipUtils.ZipFileData(this.zipFile, zipWorkPath);
if (stream != null)
{
if (string.Equals(Path.GetExtension(zipWorkPath), ".zip", StringComparison.InvariantCultureIgnoreCase))
{
#region 压缩文件解压。
using (ZipInputStream zipStream = new ZipInputStream(stream))
{
if (zipStream == null)
{
return;
}
ZipEntry entry = null;
while ((entry = zipStream.GetNextEntry()) != null)
{
if (entry != null && entry.IsFile && !string.IsNullOrEmpty(entry.Name))
{
LocalStudentWorkFile lswf = new LocalStudentWorkFile();
lswf.FileID = string.Format("{0}", Guid.NewGuid()).Replace("-", string.Empty);
lswf.FileExt = Path.GetExtension(entry.Name);
lswf.FileName = Path.GetFileNameWithoutExtension(entry.Name);
if (string.IsNullOrEmpty(lsw.FileExt))
{
lsw.FileExt = lswf.FileExt;
}
else if (lsw.FileExt.IndexOf(lswf.FileExt) == -1)
{
lsw.FileExt += "|" + lswf.FileExt;
}
lswf.Size = entry.Size;
lsw.WorkFiles.Add(lswf);
this.RaiseChanged(handler, string.Format("导入作品{0}{1}...", lswf.FileName, lswf.FileExt));
using (FileStream fs = new FileStream(lsw.StudentWorkFilePath(store, ls, lswf), FileMode.Create, FileAccess.Write))
{
byte[] buf = new byte[512];
int len = 0;
while ((len = zipStream.Read(buf, 0, buf.Length)) > 0)
{
fs.Write(buf, 0, len);
}
}
}
}
}
#endregion
}
else
{
#region 导入单独文件。
LocalStudentWorkFile lswf = new LocalStudentWorkFile();
lswf.FileID = string.Format("{0}", Guid.NewGuid()).Replace("-", string.Empty);
lswf.FileName = lsw.WorkName;
lswf.FileExt = Path.GetExtension(zipWorkPath);
if (string.IsNullOrEmpty(lsw.FileExt))
{
lsw.FileExt = lswf.FileExt;
}
else if (lsw.FileExt.IndexOf(lswf.FileExt) == -1)
{
lsw.FileExt += "|" + lswf.FileExt;
}
lswf.Size = stream.Length;
lsw.WorkFiles.Add(lswf);
this.RaiseChanged(handler, string.Format("导入作品{0}{1}...", lswf.FileName, lswf.FileExt));
using (FileStream fs = new FileStream(lsw.StudentWorkFilePath(store, ls, lswf), FileMode.Create, FileAccess.Write))
{
byte[] buf = new byte[512];
StreamUtils.Copy(stream, fs, buf);
}
#endregion
}
}
}
}
