I have an issue with adding a QR-code to my pdf file.
If I use code like this (with new Bitmap), the resulting image quality is very low.
If use barCodeBuilder.ImageQuality = ImageQualityMode.AntiAlias; the quality is absolutely awful.
var barCodeBuilder = new BarCodeBuilder();
barCodeBuilder.CodeText = resultString;
barCodeBuilder.EncodeType = !qrCode ? EncodeTypes.Code128 : EncodeTypes.QR;
barCodeBuilder.AutoSize = false;
barCodeBuilder.Resolution = new Resolution(300, 300, ResolutionMode.Graphics);
barCodeBuilder.ImageHeight = 4000;
barCodeBuilder.ImageWidth = 4000;
// becomes even worse
//barCodeBuilder.ImageQuality = ImageQualityMode.AntiAlias;
var documentBuilder = new DocumentBuilder(document);
documentBuilder.MoveToField(field, false);
documentBuilder.InsertImage(new Bitmap(barCodeBuilder.GetOnlyBarCodeImage(), !qrCode ? new Size(200, 30) : new Size(100, 100)));
If I use code without new Bitmap, the resulting image is extremely small.
var barCodeBuilder = new BarCodeBuilder();
barCodeBuilder.CodeText = resultString;
barCodeBuilder.EncodeType = !qrCode ? EncodeTypes.Code128 : EncodeTypes.QR;
barCodeBuilder.AutoSize = false;
barCodeBuilder.Resolution = new Resolution(300, 300, ResolutionMode.Graphics);
barCodeBuilder.ImageHeight = 4000;
barCodeBuilder.ImageWidth = 4000;
// becomes even worse
//barCodeBuilder.ImageQuality = ImageQualityMode.AntiAlias;
var documentBuilder = new DocumentBuilder(document);
documentBuilder.MoveToField(field, false);
documentBuilder.InsertImage(barCodeBuilder.GetOnlyBarCodeImage());
Related
while generating pdf on localhost using below code is fine,however it generates a pdf of 0KB size while on server . What I am doing wrong here ?
I am using iTextsharp nuget and the code runs fine on local server.
public byte[] GetPDF(string pHTML, List<int> ideaidlist)
{
byte[] bPDF = null;
MemoryStream ms = new MemoryStream();
TextReader txtReader = new StringReader(pHTML);
// Document doc = new Document(PageSize.LETTER, 0, 0, 0, 0);
Document doc = new Document(new Rectangle(864f, 870f), 0, 0, 0, 0);
string Certpath = ConfigurationManager.AppSettings["MailImagePath"]+"Certificates.pdf";//System.Configuration.
string ImgTopPath =ConfigurationManager.AppSettings["CertificateImagePath"];
string ImgMidPath =ConfigurationManager.AppSettings["CertificateImagePath"];
string ImgBotPath =ConfigurationManager.AppSettings["CertificateImagePath"];
FileInfo newExistFile = new FileInfo(Certpath);
if (newExistFile.Exists)
{
newExistFile.Delete();
}
PdfWriter oPdfWriter = PdfWriter.GetInstance(doc,new FileStream(Certpath , FileMode.CreateNew));
HTMLWorker htmlWorker = new HTMLWorker(doc);
doc.Open();
GeneratePdfVM data = new GeneratePdfVM();
foreach (var item in ideaidlist)
{
data = new CommonBL().GetIdeaidListForGenerateCertificates(item);
doc.NewPage();
PdfPTable table = new PdfPTable(1);
table.TotalWidth = 1000;
table.WidthPercentage = 100;
table.LockedWidth = true;
table.HorizontalAlignment = 0;
table.DefaultCell.Border = Rectangle.NO_BORDER;
iTextSharp.text.Image imageTopURL = iTextSharp.text.Image.GetInstance(ImgTopPath + "CertiTop.PNG");
PdfPCell imgTopCell = new PdfPCell(imageTopURL);
imgTopCell.Border = Rectangle.NO_BORDER;
table.AddCell(imgTopCell);
imageTopURL.SpacingAfter = 20;
PdfPCell FirstTxtCell = new PdfPCell();
Paragraph p = new Paragraph(data.EmpName);
p.Font = new Font(Font.FontFamily.HELVETICA, 35f, Font.UNDERLINE);
p.Alignment = Element.ALIGN_CENTER;
FirstTxtCell.AddElement(p);
FirstTxtCell.PaddingRight = 190f;
FirstTxtCell.Border = 0;
table.AddCell(FirstTxtCell);
iTextSharp.text.Image imageMidURL = iTextSharp.text.Image.GetInstance(ImgMidPath + "CertiMid.PNG");
PdfPCell imgMidCell = new PdfPCell(imageMidURL);
imgMidCell.Border = Rectangle.NO_BORDER;
imgMidCell.Border = 0;
imageMidURL.SpacingBefore = 15f;
imageMidURL.Alignment = Element.ALIGN_CENTER;
imgMidCell.PaddingRight = 244f;
table.AddCell(imgMidCell);
PdfPCell SecTextCell = new PdfPCell();
Paragraph para = new Paragraph(data.Title);
para.Font = new Font(Font.FontFamily.HELVETICA, 32f, Font.ITALIC);
para.Alignment = Element.ALIGN_CENTER;
SecTextCell.AddElement(para);
SecTextCell.Border = 0;
SecTextCell.PaddingRight = 200f;
table.AddCell(SecTextCell);
iTextSharp.text.Image imageBotURL = iTextSharp.text.Image.GetInstance(ImgBotPath + "CertiBottom.PNG");
PdfPCell imgBotCell = new PdfPCell(imageBotURL);
imgBotCell.Border = 0;
table.AddCell(imgBotCell);
imageBotURL.SpacingBefore=20;
imageTopURL.ScaleAbsolute(860f, 230f);
imageMidURL.ScaleAbsolute(930f, 100f);
imageBotURL.ScaleAbsolute(864f, 230f);
doc.Open();
doc.Add(table);
htmlWorker.StartDocument();
htmlWorker.Parse(txtReader);
htmlWorker.EndDocument();
}
htmlWorker.Close();
doc.Close();
bPDF = ms.ToArray();
ms.Close();
return bPDF;
}
Here I am calling the above function :
public void GenerateCertificatePDF(List<int> ideaidlist)
{
string HTMLContent = "";
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=" + "Certificates.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(GetPDF(HTMLContent, ideaidlist));
}
When you run your code locally, a file is created:
new FileStream(Certpath , FileMode.CreateNew)
That same file is created on the server when you run the code on the server.
However, you also want to send the bytes of the PDF document to the browser. To achieve this by creating a MemoryStream:
MemoryStream ms = new MemoryStream();
When I search your code for the ms variable, I don't find it anywhere except at the very end:
bPDF = ms.ToArray();
ms.Close();
return bPDF;
In other words: you don't write any bytes to ms; the MemoryStream is empty. This is proven by the fact that you get 0 bytes.
Your code works in the sense that a PDF is written on the disk of the server, but that's not what you want, is it? You want this method to create a PDF in memory and then send its bytes to a server.
To achieve this, you need to remove all references to certPath, the part where you exist if the file exists and the FileStream. Instead, you need to write the PDF to the MemoryStream:
PdfWriter oPdfWriter = PdfWriter.GetInstance(doc, ms);
This is explained by Chris Haas in his answer to this question: iTextSharp - Create new document as Byte[]
I user LUCENE_30 for my search engine but i cannot make fuzzy search.How can i make it work?
I tried use GetFuzzyQuery but nothing happens.As i see is not supported.
Here my code :
if (searchQuery.Length < 3)
{
throw new ArgumentException("none");
}
FSDirectory dir = FSDirectory.Open(new DirectoryInfo(_indexFileLocation));
var searcher = new IndexSearcher(dir, true);
var analyzer = new RussianAnalyzer(Lucene.Net.Util.Version.LUCENE_29);
var query = MultiFieldQueryParser.Parse(Lucene.Net.Util.Version.LUCENE_30, searchQuery, new[] {"Title" }, new[] { Occur.SHOULD }, analyzer);
var hits = searcher.Search(query, 11110);
var dto = new PerformSearchResultDto();
dto.SearchResults = new List<SearchResult>();
dto.Total = hits.TotalHits;
for (int i = pagesize * page; i < hits.TotalHits && i < pagesize * page + pagesize; i++)
{
// Document doc = hits.Doc(i);
int docId = hits.ScoreDocs[i].Doc;
var doc = searcher.Doc(docId);
var result = new SearchResult();
result.Title = doc.Get("Title");
result.Type = doc.Get("Type");
result.Href = doc.Get("Href");
result.LastModified = doc.Get("LastModified");
result.Site = doc.Get("Site");
result.City = doc.Get("City");
//result.Region = doc.Get("Region");
result.Content = doc.Get("Content");
result.NoIndex = Convert.ToBoolean(doc.Get("NoIndex"));
dto.SearchResults.Add(result);
}
Fuzzy queries certainly are supported. See the FuzzyQuery class.
The query parser also supports fuzzy queries, simply with a tilde appended: misspeled~
my problem is a bit strange!! I'm going to create a calendar tile with writable bitmap for windows phone 8. so I'm using this character "📆".
I'm using the below code and everything works fine as I expected on emulator. but when I test my app on a real device,calendar character will be appeared different
private void RenderText9()
{
int width = 159;
int height = 159;
string imagename = "SmallBackground";
WriteableBitmap b = new WriteableBitmap(width, height);
var canvas = new Grid();
canvas.Width = b.PixelWidth;
canvas.Height = b.PixelHeight;
var background = new Canvas();
background.Height = b.PixelHeight;
background.Width = b.PixelWidth;
SolidColorBrush backColor = new SolidColorBrush((Color)Application.Current.Resources["PhoneAccentColor"]);
background.Background = backColor;
var textBlock = new TextBlock();
textBlock.Text = "25";
textBlock.TextAlignment = TextAlignment.Center;
textBlock.Margin = new Thickness(0, 72, 0, 0);
textBlock.Width = 159;
textBlock.TextWrapping = TextWrapping.Wrap;
textBlock.Foreground = new SolidColorBrush(Colors.White);
textBlock.FontSize = 35;
var textBlock2 = new TextBlock();
textBlock2.Text = "📆";
textBlock2.TextAlignment = TextAlignment.Center;
textBlock2.Margin = new Thickness(0, 40, 0, 0);
textBlock2.Width = 159;
textBlock2.TextWrapping = TextWrapping.Wrap;
textBlock2.Foreground = new SolidColorBrush(Colors.White); //color of the text on the Tile
textBlock2.FontSize = 75;
canvas.Children.Add(textBlock);
canvas.Children.Add(textBlock2);
b.Render(background, null);
b.Render(canvas, null);
b.Invalidate(); //Draw bitmap
//Save bitmap as jpeg file in Isolated Storage
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream imageStream = new IsolatedStorageFileStream("/Shared/ShellContent/" + imagename + ".jpg", System.IO.FileMode.Create, isf))
{
b.SaveJpeg(imageStream, b.PixelWidth, b.PixelHeight, 0, 100);
}
}
}
this is the tile on both emulator and real device(pay attention to difference).
anybody knows any solution??? I don't understand the reason !!
I'm trying to generate a simple image and display it in WinRT/XAML.
For that I want the byte[] of an image drawn with SharpDX.
My Approach so far seems fine but the resulting buffer is empty.
I tried CopyPixels as well but it also only produced zeros.
Can somebody point me in the right direction?
private static byte[] Draw(TexRenderer trnder, int width, int height)
{
var wicFactory = new ImagingFactory();
var dddFactory = new SharpDX.Direct2D1.Factory();
var dwFactory = new SharpDX.DirectWrite.Factory();
var wicBitmap = new Bitmap(
wicFactory,
width,
height,
SharpDX.WIC.PixelFormat.Format32bppBGR,
BitmapCreateCacheOption.CacheOnLoad);
var renderTargetProperties = new RenderTargetProperties(
RenderTargetType.Default,
new SharpDX.Direct2D1.PixelFormat(Format.Unknown, AlphaMode.Unknown),
dddFactory.DesktopDpi.Width,
dddFactory.DesktopDpi.Height,
RenderTargetUsage.None,
FeatureLevel.Level_DEFAULT);
var renderTarget = new WicRenderTarget(
dddFactory,
wicBitmap,
renderTargetProperties)
{
TextAntialiasMode = TextAntialiasMode.Cleartype
};
renderTarget.BeginDraw();
var textFormat = new TextFormat(dwFactory, "Consolas", 48)
{
TextAlignment = TextAlignment.Center,
ParagraphAlignment = ParagraphAlignment.Center
};
var textBrush = new SolidColorBrush(
renderTarget,
Color.Blue);
renderTarget.Clear(Color.White);
renderTarget.DrawText(
"Hi, mom!",
textFormat,
new RectangleF(0, 0, width, height),
textBrush);
var bitmapRenderTarget = new BitmapRenderTarget(renderTarget, CompatibleRenderTargetOptions.None);
trnder.Render(bitmapRenderTarget, 0, 0);
renderTarget.EndDraw();
var bitmaplock = wicBitmap.Lock(null, BitmapLockFlags.Read);
var dStream = new DataStream(bitmaplock.Data.DataPointer, bitmaplock.Stride * bitmaplock.Size.Height, true, true);
var buffer = new byte[bitmaplock.Stride * bitmaplock.Size.Height];
dStream.Write(buffer, 0, buffer.Length);
return buffer;
}
I run in the same issue, i need acces to the raw texture data for phisics
DataStream dataStream = new DataStream(source.Size.Height * source.Size.Width, true, true);
bitmapSource.CopyPixels( source.Size.Width * sizeof(uint), dataStream);
var data = dataStream.ReadRange<uint>(source.Size.Width * source.Size.Height);
on the forums SharpDX forumsformore details
I've recently moved to almost exclusively electronic books. I prefer to mark up documents with highlighting or annotations as I read them.
However, when I get an updated version of a PDF - O'Reilly, for example, will give access to corrected versions of the books you've purchased - I'm then stuck with a marked up older copy and a newer copy, without my notes.
My preferred language being C# I realize that iTextSharp is probably what I'd need to use if I wanted to programmatically do this (see for example Copy pdf annotations via C#), but is there an easier way to handle this?
I can't believe I'm the only one with this issue, so is there perhaps already a solution that will handle this for me?
You can use this example for iTextSharp to approach your problem:
var output = new MemoryStream();
using (var document = new Document(PageSize.A4, 70f, 70f, 20f, 20f))
{
var readers = new List<PdfReader>();
var writer = PdfWriter.GetInstance(document, output);
writer.CloseStream = false;
document.Open();
const Int32 requiredWidth = 500;
const Int32 zeroBottom = 647;
const Int32 left = 50;
Action<String, Action> inlcudePdfInDocument = (filename, e) =>
{
var reader = new PdfReader(filename);
readers.Add(reader);
var pageCount = reader.NumberOfPages;
for (var i = 0; i < pageCount; i++)
{
e?.Invoke();
var imp = writer.GetImportedPage(reader, (i + 1));
var scale = requiredWidth / imp.Width;
var height = imp.Height * scale;
writer.DirectContent.AddTemplate(imp, scale, 0, 0, scale, left, zeroBottom - height);
var annots = reader.GetPageN(i + 1).GetAsArray(PdfName.ANNOTS);
if (annots != null && annots.Size != 0)
{
foreach (var a in annots)
{
var newannot = new PdfAnnotation(writer, new Rectangle(0, 0));
var annotObj = (PdfDictionary) PdfReader.GetPdfObject(a);
newannot.PutAll(annotObj);
var rect = newannot.GetAsArray(PdfName.RECT);
rect[0] = new PdfNumber(((PdfNumber)rect[0]).DoubleValue * scale + left); // Left
rect[1] = new PdfNumber(((PdfNumber)rect[1]).DoubleValue * scale); // top
rect[2] = new PdfNumber(((PdfNumber)rect[2]).DoubleValue * scale + left); // right
rect[3] = new PdfNumber(((PdfNumber)rect[3]).DoubleValue * scale); // bottom
writer.AddAnnotation(newannot);
}
}
document.NewPage();
}
}
foreach (var apprPdf in pdfs)
{
document.NewPage();
inlcudePdfInDocument(apprPdf.Pdf, null);
}
document.Close();
readers.ForEach(x => x.Close());
}
output.Position = 0;
return output;
This example copies a list of pdf files with annotations into a new pdf file.
Obtain data from two PdfReaders simultaneously - one for copying new pdf and another for copying annotations from old pdf.