public Pdf2Image(string pdfFileName, Pdf2ImageSettings settings)
: this(pdfFileName)
{
if (settings == null)
{
throw new ArgumentNullException("setting");
}
this.Settings = settings;
}
//Конструктор формы
public MainForm()
{
InitializeComponent();
//Настройки рендеринга pdf
_settings = new Pdf2ImageSettings
{
AntiAliasMode = AntiAliasMode.High,
Dpi = 96,
GridFitMode = GridFitMode.Topological,
ImageFormat = ImageFormat.Png24
};
//Инициализация
_zoom = 1f;
_canRender = true;
_mouseDown = false;
_resize = false;
_currentPage = 0;
tscbZoom.SelectedIndex = 1;
_list = new List <ImageProp>();
}
protected virtual IDictionary <GhostScriptCommand, object> GetConversionArguments(string pdfFileName, string outputImageFileName, int pageNumber, string password, Pdf2ImageSettings settings)
{
Dictionary <GhostScriptCommand, object> arguments;
arguments = new Dictionary <GhostScriptCommand, object>();
// basic GhostScript setup
arguments.Add(GhostScriptCommand.Silent, null);
arguments.Add(GhostScriptCommand.Safer, null);
arguments.Add(GhostScriptCommand.Batch, null);
arguments.Add(GhostScriptCommand.NoPause, null);
// specify the output
arguments.Add(GhostScriptCommand.Device, GhostScriptAPI.GetDeviceName(settings.ImageFormat));
arguments.Add(GhostScriptCommand.OutputFile, outputImageFileName);
// page numbers
arguments.Add(GhostScriptCommand.FirstPage, pageNumber);
arguments.Add(GhostScriptCommand.LastPage, pageNumber);
// graphics options
arguments.Add(GhostScriptCommand.UseCIEColor, null);
if (settings.AntiAliasMode != AntiAliasMode.None)
{
arguments.Add(GhostScriptCommand.TextAlphaBits, settings.AntiAliasMode);
arguments.Add(GhostScriptCommand.GraphicsAlphaBits, settings.AntiAliasMode);
}
arguments.Add(GhostScriptCommand.GridToFitTT, settings.GridFitMode);
// image size
if (settings.TrimMode != PdfTrimMode.PaperSize)
{
arguments.Add(GhostScriptCommand.Resolution, settings.Dpi.ToString());
}
switch (settings.TrimMode)
{
case PdfTrimMode.PaperSize:
if (settings.PaperSize != PaperSize.Default)
{
arguments.Add(GhostScriptCommand.FixedMedia, true);
arguments.Add(GhostScriptCommand.PaperSize, settings.PaperSize);
}
break;
case PdfTrimMode.TrimBox:
arguments.Add(GhostScriptCommand.UseTrimBox, true);
break;
case PdfTrimMode.CropBox:
arguments.Add(GhostScriptCommand.UseCropBox, true);
break;
}
// pdf password
if (!string.IsNullOrEmpty(password))
{
arguments.Add(GhostScriptCommand.PDFPassword, password);
}
// pdf filename
arguments.Add(GhostScriptCommand.InputFile, pdfFileName);
return(arguments);
}
private bool ConvertDocumentPdf(int id)
{
TaiLieu document = db.TaiLieux.Where(x => x.MaTaiLieu == id).FirstOrDefault();
if (document != null)
{
string strPdfPath = Path.Combine(Server.MapPath("~/Upload/TaiLieuGoc/"), document.fileGOC);
if (System.IO.File.Exists(strPdfPath) && strPdfPath.ToLower().EndsWith(".pdf"))
{
Pdf2ImageSettings convertSetting = new Pdf2ImageSettings();
convertSetting.Dpi = 150;
Pdf2Image pdf = new Pdf2Image(strPdfPath, convertSetting);
if (pdf.PageCount > 0)
{
List <PdfPage> lstPage = new List <PdfPage>();
for (int j = 1; j <= pdf.PageCount; j++)
{
try
{
System.Drawing.Bitmap bitmap = pdf.GetImage(j);
//MemoryStream ms = new MemoryStream();
//bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
string strFileName = id + "-" + j + ".png";
string strFilePath = Path.Combine(Server.MapPath("~/Upload/Image/"), strFileName);
if (System.IO.File.Exists(strFilePath))
{
System.IO.File.Delete(strFilePath);
}
bitmap.Save(strFilePath, System.Drawing.Imaging.ImageFormat.Png);
PdfPage page = new PdfPage();
page.DocumentId = id;
page.Page = j;
page.ImageUrl = "/Upload/Image/" + strFileName;
lstPage.Add(page);
}
catch (IndexOutOfRangeException)
{
break;
}
catch (Exception ex)
{
using (StreamWriter writer = new StreamWriter(Path.Combine(Server.MapPath("~/Upload/Image/"), "Log.txt"), true, System.Text.UTF8Encoding.Unicode))
{
writer.WriteLine(ex.ToString());
}
break;
}
}
if (lstPage.Count > 0)
{
using (TransactionScope scope = new TransactionScope())
{
var lstOld = db.PdfPages.Where(x => x.DocumentId == id).ToList();
if (lstOld != null)
{
foreach (var item in lstOld)
{
db.PdfPages.Remove(item);
}
}
db.PdfPages.AddRange(lstPage);
db.SaveChanges();
scope.Complete();
}
return(true);
}
}
}
}
return(false);
}
