public static bool BuildPreview(string temporaryDirectory, string sourceFile, string mimetype, int width, int height, out string previewMimetype, out string previewPath, out string error)
{
IPreview preview = null;
bool success = false;
previewMimetype = null;
previewPath = null;
error = null;
if (mimetype.StartsWith("image/", System.StringComparison.InvariantCulture) ||
mimetype.StartsWith("video/", System.StringComparison.InvariantCulture) ||
mimetype.StartsWith("audio/", System.StringComparison.InvariantCulture))
{
preview = new ImageVideoPreview(temporaryDirectory);
}
else if (mimetype == "application/pdf")
{
preview = new PdfPreview(temporaryDirectory);
}
else if (mimetype == "text/uri-list")
{
preview = new UrlPreview(temporaryDirectory);
}
//else if (mimetype == "application/x-laclasse-pad")
// preview = new HtmlPreview(temporaryDirectory);
if (preview != null)
{
previewPath = preview.Process(sourceFile, mimetype, width, height, out PreviewFormat format, out error);
if (previewPath != null)
{
if (format == PreviewFormat.PNG)
{
previewMimetype = "image/png";
}
else
{
previewMimetype = "image/jpeg";
}
success = true;
}
else
{
success = false;
}
}
return(success);
}
public MainWindow()
{
InitializeComponent();
try
{
PdfPreview.OpenFile(previewPath);
System.Windows.Threading.DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer();
dispatcherTimer.Tick += dispatcherTimer_Tick;
TextEntry.TextChanged += dispatcherTimer_Tick;
dispatcherTimer.Interval = new TimeSpan(0, 0, 120);
dispatcherTimer.Start();
}
catch
{
}
}
protected void UploadButton_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
try
{
if (ddlSection.SelectedIndex != -1)
{
DulyDBDataContext dc = new DulyDBDataContext();
//get the extension
string extension = System.IO.Path.GetExtension(FileUpload1.FileName);
//generate RandomName
string random = randomName();
string newFileName = random + extension;
FileUpload1.SaveAs(HttpContext.Current.Server.MapPath("~") + "/Uploads/" +
newFileName);
//THIS IS WHERE THE PREVIEW IMG IS CREATED
//open the document
PdfManager objPdf = new PdfManager();
PdfDocument objDoc = objPdf.OpenDocument(HttpContext.Current.Server.MapPath("~") + "/Uploads/" + newFileName);
//get the first page
PdfPage firstPage = objDoc.Pages[1];
//convert to img
PdfPreview objPreview = firstPage.ToImage("ResolutionX=100; ResolutionY=100");
//save
objPreview.Save(HttpContext.Current.Server.MapPath("~") + "/Preview/" + random + ".png", true);
//END OF PREVIEW
//test link
hyperlink.NavigateUrl = "http://dulynoted-001-site1.smarterasp.net/Uploads/" + newFileName;
hyperlink.Visible = true;
var newNote = new Note
{
sId = int.Parse(ddlSection.SelectedValue),
userId = int.Parse(Session["dulyNoted"].ToString()),
numberTimesFlagged = 0,
upVoteCounter = 0,
downVoteCounter = 0,
source = "http://dulynoted-001-site1.smarterasp.net/Uploads/" + newFileName,
preview = "http://dulynoted-001-site1.smarterasp.net/Preview/" + random + ".png",
title = NoteTitle.Text,
description = NoteDescription.Text,
noteDate = Calendar_NoteDate.SelectedDate,
uploadDate = DateTime.Now
};
dc.Notes.InsertOnSubmit(newNote);
dc.SubmitChanges();
//AFTER THE FILE IS UPLOADED HERE
NoteTitle.Text = "";
NoteDescription.Text = "";
}
else
{
UploadLabel1.Text = "You must select a section.";
}
}
catch (Exception ex)
{
UploadLabel1.Text = "ERROR: " + ex.Message.ToString();
}
}
else
{
UploadLabel1.Text = "You have not specified a file.";
}
}
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
// formatting to PDF and save result to file
MarkdownPdf.Transform(TextEntry.Text, previewPath);
PdfPreview.OpenFile(previewPath);
}
