On Assembling pdf files from different sources - part 1 we started to face the challenge of assembling a pdf file from different sources through an automatizated process.
We have seen how to add sections and how to add images and bookmarks to the sections.
When you create sections you can also create headers and footers for these sections, like in the code snippet below where even and odd headers and footers are differentiated:
void CreateHeaders(string headerText, string footerText)
{
Section sec = document.LastSection;
Paragraph parNumPages = new Paragraph();
parNumPages.AddText("Page ");
parNumPages.AddPageField();
parNumPages.AddText(" of ");
parNumPages.AddNumPagesField();
var header = document.LastSection.Headers.Primary;
var holesImg = header.AddImage("holes.png");
holesImg.Height = "9cm";
holesImg.LockAspectRatio = true;
holesImg.RelativeVertical = RelativeVertical.Page;
holesImg.RelativeHorizontal = RelativeHorizontal.Page;
holesImg.Top = "6.5cm";
holesImg.Left = "8mm";
var headerPrimary = document.LastSection.Headers.Primary;
var headerPrimaryImg = headerPrimary.AddImage("headers\\header_right.png");
headerPrimaryImg.Height = "1.2cm";
headerPrimaryImg.LockAspectRatio = true;
headerPrimaryImg.RelativeVertical = RelativeVertical.Page;
headerPrimaryImg.RelativeHorizontal = RelativeHorizontal.Page;
headerPrimaryImg.Top = "7mm";
headerPrimaryImg.Left = "2cm";
var tfHeaderPrimary = sec.Headers.Primary.Elements.AddTextFrame();
tfHeaderPrimary.AddParagraph(headerText).Style = "BreadcrumbsRight";
tfHeaderPrimary.Width = "6cm";
tfHeaderPrimary.RelativeVertical = RelativeVertical.Page;
tfHeaderPrimary.RelativeHorizontal = RelativeHorizontal.Page;
tfHeaderPrimary.Top = "1.3cm";
tfHeaderPrimary.Left = "2cm";
var headerEven = document.LastSection.Headers.EvenPage;
var headerEvenImg = headerEven.AddImage("headers\\header_left.png");
headerEvenImg.Height = "1.2cm";
headerEvenImg.LockAspectRatio = true;
headerEvenImg.RelativeVertical = RelativeVertical.Page;
headerEvenImg.RelativeHorizontal = RelativeHorizontal.Page;
headerEvenImg.Top = "7mm";
headerEvenImg.Left = "2cm";
var parHeaderEven = sec.Headers.EvenPage.AddTextFrame();
parHeaderEven.AddParagraph(headerText).Style = "BreadcrumbsLeft";
parHeaderEven.Width = "6cm";
parHeaderEven.RelativeVertical = RelativeVertical.Page;
parHeaderEven.RelativeHorizontal = RelativeHorizontal.Page;
parHeaderEven.Top = "1.3cm";
parHeaderEven.Left = "22cm";
// FOOTERS
var footerPrimary = document.LastSection.Footers.Primary;
var footerPrimaryImg = footerPrimary.AddImage("headers\\footer_right.png");
footerPrimaryImg.Height = "2.5mm";
footerPrimaryImg.LockAspectRatio = true;
footerPrimaryImg.RelativeVertical = RelativeVertical.Page;
footerPrimaryImg.RelativeHorizontal = RelativeHorizontal.Page;
footerPrimaryImg.Top = "19cm";
footerPrimaryImg.Left = "2cm";
var tfFooterPrimary = sec.Footers.Primary.Elements.AddTextFrame();
tfFooterPrimary.AddParagraph(footerText).Style = "BreadcrumbsRight";
tfFooterPrimary.Width = "6cm";
tfFooterPrimary.RelativeVertical = RelativeVertical.Page;
tfFooterPrimary.RelativeHorizontal = RelativeHorizontal.Page;
tfFooterPrimary.Top = "18.9cm";
tfFooterPrimary.Left = "25.5cm";
var footerEven = document.LastSection.Footers.EvenPage;
var footerEvenImg = footerEven.AddImage("headers\\footer_left.png");
footerEvenImg.Height = "2.5mm";
footerEvenImg.LockAspectRatio = true;
footerEvenImg.RelativeVertical = RelativeVertical.Page;
footerEvenImg.RelativeHorizontal = RelativeHorizontal.Page;
footerEvenImg.Top = "19cm";
footerEvenImg.Left = "2cm";
var tfFooterEven = sec.Footers.EvenPage.Elements.AddTextFrame();
tfFooterEven.AddParagraph(footerText).Style = "BreadcrumbsLeft";
tfFooterEven.Width = "6cm";
tfFooterEven.RelativeVertical = RelativeVertical.Page;
tfFooterEven.RelativeHorizontal = RelativeHorizontal.Page;
tfFooterEven.Top = "18.9cm";
tfFooterEven.Left = "20.5cm";
}
As already explained in part 1, it is important to create room for the external pdf files before they are concatenated to the main pdf; in fact MigraDoc does not include an API to import external files and you have to go through PDFSharp, but in that case you lose the abstraction layer of sections, paragraphs, etc; in other words, when you leverage the pdf importing capability of PDFSharp, then you lose the logic structure of the MigraDoc; so, concatenate pdf files is the last thing to do (almost last.. you have to add page numbers at the end).
So, to create room for external pdf files and let their content to be bookmarked, you can take a look to the trick below, where there are created as many sections as the pdf files listed in a declist.txt file:
public void PreFillPart6Section()
{
Section section = GetSection("Part6Section");
CreateHeaders("Decisions and Regulations", "");
string titleSection = "PART 6: DECISIONS AND REGULATIONS";
var parT = section.AddParagraph(titleSection);
parT.Format.Font.Color = Colors.Transparent;
parT.Format.SpaceBefore = "10cm";
bCreator.AddBookmarkMigraDoc(parT, titleSection, titleSection, typeOfBookmark.part);
section.AddPageBreak();
// section for Decisions and Regulations
AddDefaultSection("DecRegsSection");
section = GetSection("DecRegsSection");
// read list of pdf files and save names in a list
using (StreamReader sr = new StreamReader("dec\\declist.txt"))
{
try
{
while (sr.EndOfStream == false)
{
declist.Add("rfu\\" + sr.ReadLine());
}
}
catch (Exception ex){}
}
// Create blank sections pages
foreach (string dec in declist)
{
for (int i = 1; i <= XPdfForm.FromFile(dec).PageCount; i++)
{
// NB each page contains 2 dec
string sectionName = dec + "_" + i.ToString();
if (IsOdd(decPagesCounter))
{
AddDefaultSection(sectionName);
}
var par = document.LastSection.AddParagraph(sectionName);
par.Format.Font.Color = Colors.Transparent;
string bookmarktext = dec.Replace(".pdf", "").Replace("dec\\", "");
bCreator.AddBookmarkMigraDoc(par, bookmarktext, bookmarktext, typeOfBookmark.part);
decPagesCounter += 1;
}
}
pageAdded = decPagesCounter / 2;
}
Then you can add to the other sections all the data needed, in my case they came mainly form Sharepoint lists and some text from extenal txt files; in this case I leveraged the MigraDoc DDL (MigraDoc Document Description Language) to add formatted text in the following way:
public void FillIntroSection()
{
var document2 = MigraDoc.DocumentObjectModel.IO.DdlReader.DocumentFromFile("intro.mdddl");
int indexIntroSection = GetSectionIndex("IntroSection");
Section section = GetSection("IntroSection");
foreach (DocumentObject el in document2.Sections[0].Elements)
{
DocumentObject elCloned = (DocumentObject)el.Clone();
document.Sections[indexIntroSection].Elements.Add(elCloned);
}
}
It is important to note that we imported just the elements included in the first section of the intro.mdddl file and that they need to be cloned before added to the relevant section of the main pdf.
A portion of intro.mdddl file is showed below:
\document
{
\styles
{
Normal
{
Font.Name = "Swis721 Lt BT"
Font.Color = Black
}
Heading1
{
Font.Name = "Swis721 BT"
Font.Size = 16
Font.Bold = true
ParagraphFormat.SpaceBefore = 6
ParagraphFormat.SpaceAfter = 6
ParagraphFormat.KeepWithNext = true
ParagraphFormat.Alignment = Left
ParagraphFormat.OutlineLevel = BodyText
}
Heading2
{
Font.Size = 11
ParagraphFormat.SpaceBefore = 12
ParagraphFormat.SpaceAfter = 6
ParagraphFormat.KeepWithNext = true
}
DirChapter : Heading1
{
ParagraphFormat.Alignment = Left
ParagraphFormat.OutlineLevel = BodyText
Font.Color = Black
Font.Bold = true
}
DirParagraph : Normal
{
Font.Bold = false
Font.Size = 11
ParagraphFormat.Alignment = Justify
ParagraphFormat.SpaceAfter = 1
ParagraphFormat.OutlineLevel = BodyText
}
}
\section [
PageSetup
{
StartingNumber = 1
Orientation = Landscape
TopMargin = "20mm"
BottomMargin = "35mm"
LeftMargin = "15mm"
RightMargin = "25mm"
HeaderDistance = "20mm"
FooterDistance = "15mm"
MirrorMargins = false
OddAndEvenPagesHeaderFooter = true
//DifferentFirstPageHeaderFooter = true
}
]
{
\header
{
}
\footer [Format.Alignment = Center]
{
}
// -------------------------------------------------------------------------
\paragraph [Style = "DirChapter"]
{
Disclaimer
}
\paragraph [Style = "DirParagraph"]
{
This document has been prepared for guidance only ...
}
\paragraph
\paragraph [Style = "DirChapter"]
{
About
}
\paragraph [Style = "DirParagraph"]
{
The Guidelines are prepared to ...
}
\paragraph [Style = "DirParagraph"]
{
As you may see the sintax is very clear and in some way similar to LaTEX language.
Now it's time to add the extenal pdf files; in the code snippet below they are added injecting two pages of the external files in one extisting (and bookmarked) page of the main pdf:
void AddExternalPdfs()
{
// Associate the MigraDoc document with a renderer.
pdfRenderer.Document = document;
// Layout and render document to PDF.
pdfRenderer.RenderDocument();
// Create a renderer and prepare (=layout) the document.
var docRenderer = new DocumentRenderer(document);
docRenderer.PrepareDocument();
int pageFilled = 0;
int pagesNumWithoutRfU = docRenderer.FormattedDocument.PageCount - pageAdded;
var page1 = pdfRenderer.PdfDocument.Pages[pagesNumWithoutRfU];
XGraphics gfx = null;
int currentNumpage = pagesNumWithoutRfU;
foreach (string dec in decList)
{
var DECform = XPdfForm.FromFile(dec);
double extWidth = DECform.PixelWidth;
double extHeight = DECform.PixelHeight;
page1.Width = 2 * extWidth;
page1.Height = extHeight;// -extHeight / 4;
// draw two pages into one page of the main pdf
for (var idx = 0; idx < DECform.PageCount; idx++)
{
// Get a graphics object for page1.
gfx = XGraphics.FromPdfPage(page1);
// Set the page number (which is one-based).
DECform.PageNumber = idx + 1;
// Draw the page identified by the page number.
if (pageFilled == 0)
{
XRect decRect = new XRect(0, 0, DECform.PointWidth, DECform.PointHeight);
gfx.DrawImage(DECform, decRect);
pageFilled += 1;
}
else
{
XRect decRect = new XRect(page1.Width / 2, 0, DECform.PointWidth, DECform.PointHeight);
gfx.DrawImage(DECform, decRect);
pageFilled = 0;
currentNumpage += 1;
if (currentNumpage == pdfRenderer.PdfDocument.Pages.Count)
pdfRenderer.PdfDocument.Pages.Add();
page1 = pdfRenderer.PdfDocument.Pages[currentNumpage];
extWidth = DECform.PixelWidth;
extHeight = DECform.PixelHeight;
page1.Width = 2 * extWidth;
page1.Height = extHeight;
}
gfx.Dispose();
}
}
}
If you want add a cover to the main pdf file by importing an external pdf file you can go in this way:
public void AddCover(int coverNum, int numPage)
{
PdfPage page1 = new PdfPage();
page1.Size = PageSize.A4;
page1.Orientation = PageOrientation.Landscape;
StreamReader sr = new StreamReader("covers\\cover0.pdf");
var coverDocument = PdfReader.Open(sr.BaseStream, PdfDocumentOpenMode.Import);
var pageCover = coverDocument.Pages[coverNum];
pdfRenderer.PdfDocument.Pages.RemoveAt(0);
pdfRenderer.PdfDocument.InsertPage(numPage, pageCover);
for (int i = 0; i < pdfRenderer.PdfDocument.Pages.Count; i++)
{
PdfPage pageDbg = pdfRenderer.PdfDocument.Pages[i];
}
}
At the end, if you want to add page numbers, you can leverage PDFSharp capabilities: private void AddPageNumbers()
{
// Make a font and a brush to draw the page counter.
XFont font = new XFont("Swis 721 Th BT", 6);
XBrush brush = XBrushes.Gray;
// Add the page counter.
string noPages = pdfRenderer.PdfDocument.Pages.Count.ToString();
for (int i = 1; i < pdfRenderer.PdfDocument.Pages.Count; ++i)
{
// skip page 0 which is the cover
PdfPage page = pdfRenderer.PdfDocument.Pages[i];
// Make a layout rectangle.
XRect layoutRectangle = new XRect(0/*X*/, page.Height - font.Height - 50/*Y*/, page.Width - 25/*Width*/, font.Height/*Height*/);
XGraphics gfx = XGraphics.FromPdfPage(page);
gfx.DrawString(
"Page " + (i + 1).ToString() + " of " + noPages,
font,
brush,
layoutRectangle,
XStringFormats.BottomRight);
gfx.Dispose();
}
}