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Documents: Fix letterhead and other problems
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This commit is contained in:
Lorenz Stechauner
2026-03-27 12:06:19 +01:00
parent 982a6616e1
commit 3c52156b7e
6 changed files with 79 additions and 63 deletions
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87
Elwig/Documents/Document.cs
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@@ -88,11 +88,15 @@ namespace Elwig.Documents {
}
public int Render(string path) {
using var writer = new PdfWriter(path);
return Render(writer);
using (var writer = new PdfWriter(path)) {
Render(writer);
}
using var reader = new PdfReader(path);
using var pdf = new PdfDocument(reader);
return pdf.GetNumberOfPages();
}
private int Render(PdfWriter writer) {
private void Render(PdfWriter writer) {
NF = PdfFontFactory.CreateFont(@"C:\Windows\Fonts\times.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED);
BF = PdfFontFactory.CreateFont(@"C:\Windows\Fonts\timesbd.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED);
IF = PdfFontFactory.CreateFont(@"C:\Windows\Fonts\timesi.ttf", PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED);
@@ -117,16 +121,14 @@ namespace Elwig.Documents {
_doc = new iText.Layout.Document(pdf, iText.Kernel.Geom.PageSize.A4);
try {
_doc.SetFont(NF).SetFontSize(12);
RenderHeader(_doc, pdf);
BeforeRenderBody(_doc, pdf);
RenderBody(_doc, pdf);
var pageNum = pdf.GetNumberOfPages();
return pageNum;
} finally {
_doc.Close();
}
}
protected virtual void RenderHeader(iText.Layout.Document doc, PdfDocument pdf) { }
protected virtual void BeforeRenderBody(iText.Layout.Document doc, PdfDocument pdf) { }
protected virtual void RenderBody(iText.Layout.Document doc, PdfDocument pdf) { }
@@ -150,84 +152,77 @@ namespace Elwig.Documents {
using var mergedPdf = new PdfDocument(writer);
var merger = new PdfMerger(mergedPdf);
PdfPage? letterheadPage = null;
int letterheadInsertIndex = 0;
int letterheadDocIndex = 0;
(PdfPage Page, int InsertIndex, int DocIndex)? letterhead = null;
int p = mergedPdf.GetNumberOfPages();
for (int i = 0; i < m.Documents.Count; i++) {
if (cancelToken?.IsCancellationRequested ?? false)
throw new OperationCanceledException("Dokumentenerzeugung abgebrochen!");
var doc = m.Documents[i];
int p0 = mergedPdf.GetNumberOfPages();
int p0 = p;
if (letterheadPage != null && doc is Letterhead) {
if (mergedPdf.GetNumberOfPages() <= letterheadInsertIndex) {
mergedPdf.AddPage(letterheadPage);
if (letterhead != null && doc is Letterhead) {
if (p0 <= letterhead.Value.InsertIndex) {
mergedPdf.AddPage(letterhead.Value.Page);
mergedPdf.AddNewPage();
} else {
mergedPdf.AddPage(letterheadInsertIndex + 1, letterheadPage);
mergedPdf.AddNewPage(letterheadInsertIndex + 2);
mergedPdf.AddPage(letterhead.Value.InsertIndex + 1, letterhead.Value.Page);
mergedPdf.AddNewPage(letterhead.Value.InsertIndex + 2);
}
pageNums[letterheadDocIndex] = 1;
letterheadPage = null;
pageNums[letterhead.Value.DocIndex] = 1;
letterhead = null;
p += 2;
}
if (doc is RawPdfDocument) {
if (IsDoublePaged && doc is Letterhead) {
using var reader = new PdfReader(doc.PdfPath);
using var src = new PdfDocument(reader);
letterheadPage = src.GetPage(1).CopyTo(mergedPdf);
letterheadInsertIndex = p0;
letterheadDocIndex = i;
} else {
using var reader = new PdfReader(doc.PdfPath);
using var src = new PdfDocument(reader);
merger.Merge(src, 1, src.GetNumberOfPages());
}
using var reader = new PdfReader(doc.PdfPath);
using var src = new PdfDocument(reader);
merger.Merge(src, 1, src.GetNumberOfPages());
p += src.GetNumberOfPages();
} else {
int pageNum = doc.Render(tmpPdf.FilePath);
if (IsDoublePaged && doc is Letterhead) {
using var reader = new PdfReader(tmpPdf.FilePath);
using var src = new PdfDocument(reader);
letterheadPage = src.GetPage(1).CopyTo(mergedPdf);
letterheadInsertIndex = p0;
letterheadDocIndex = i;
letterhead = (src.GetPage(1).CopyTo(mergedPdf), p0, i);
} else {
using var reader = new PdfReader(tmpPdf.FilePath);
using var src = new PdfDocument(reader);
merger.Merge(src, 1, pageNum);
p += pageNum;
}
}
int p1 = mergedPdf.GetNumberOfPages();
int p1 = p;
pageNums.Add(p1 - p0);
if (IsDoublePaged && doc is not Letterhead && mergedPdf.GetNumberOfPages() % 2 != 0) {
if (letterheadPage != null) {
mergedPdf.AddPage(letterheadPage);
letterheadPage = null;
if (IsDoublePaged && doc is not Letterhead && p % 2 != 0) {
if (letterhead != null) {
mergedPdf.AddPage(letterhead.Value.Page);
letterhead = null;
} else {
mergedPdf.AddNewPage();
}
p++;
}
progress?.Report(100.0 * (i + 1) / (m.Documents.Count + 1));
}
if (letterheadPage != null) {
if (mergedPdf.GetNumberOfPages() <= letterheadInsertIndex) {
mergedPdf.AddPage(letterheadPage.CopyTo(mergedPdf));
if (letterhead != null) {
if (p <= letterhead.Value.InsertIndex) {
mergedPdf.AddPage(letterhead.Value.Page);
mergedPdf.AddNewPage();
} else {
mergedPdf.AddPage(letterheadInsertIndex + 1, letterheadPage.CopyTo(mergedPdf));
mergedPdf.AddNewPage(letterheadInsertIndex + 2);
mergedPdf.AddPage(letterhead.Value.InsertIndex + 1, letterhead.Value.Page);
mergedPdf.AddNewPage(letterhead.Value.InsertIndex + 2);
}
pageNums[letterheadDocIndex] = 1;
pageNums[letterhead.Value.DocIndex] = 1;
p += 2;
}
TotalPages = pageNums.Sum();
TotalPages = p;
} catch {
pdf.Dispose();
throw;
@@ -394,6 +389,8 @@ namespace Elwig.Documents {
}
private void OnPageEnd(PdfDocumentEvent evt) {
if (_doc is Letterhead) return;
var pdf = evt.GetDocument();
var page = evt.GetPage();
var pageNum = pdf.GetPageNumber(page);