public static bool CreatePdf(Stream output, Config config)
{
using (MemoryStream ms = new MemoryStream())
{
using (Document document = new Document(PageSize.LETTER))
using (PdfWriter writer = PdfWriter.GetInstance(document, ms))
{
document.AddTitle($"{config.website} - {config.title}");
document.AddAuthor($"{config.website}");
document.AddSubject(config.title);
document.AddKeywords($"{config.keywords}");
document.AddCreator($"{config.creator}");
document.AddCreationDate();
document.AddLanguage("en");
document.Open();
document.SetPageSize(PageSize.LETTER);
float w = document.PageSize.Width - document.LeftMargin - document.RightMargin;
float h = document.PageSize.Height - document.TopMargin - document.BottomMargin;
float headerInfoHeight = 68;
float headerHeight = h / 16;
float headerImageHeight = headerHeight + document.TopMargin + headerInfoHeight;
float headerImageWidth = (headerImageHeight * 640.0f) / 480.0f;
float headerWidth = w - headerImageWidth;
float headerTitleHeight = headerImageHeight - headerInfoHeight;
Rectangle[] bodyLayoutRects = new Rectangle[]
{
//
// Page 1
//
new Rectangle(0, 0, 0, 0),
new Rectangle(0, 0, 0, 0),
//
// Page 2+
//
new Rectangle(0, 0, 0, 0),
new Rectangle(0, 0, 0, 0),
//
// Footer
//
new Rectangle(0, 0, 0, 0),
};
Font fontTitle = new Font(Font.FontFamily.HELVETICA, 16, Font.BOLD, BaseColor.DARK_GRAY);
Font fontPrimaryInfo = new Font(Font.FontFamily.HELVETICA, 8, Font.BOLD, BaseColor.DARK_GRAY);
Font fontSecondaryInfo = new Font(Font.FontFamily.HELVETICA, 8, Font.NORMAL, BaseColor.DARK_GRAY);
Font fontFooter = new Font(Font.FontFamily.HELVETICA, 6, Font.NORMAL, BaseColor.GRAY);
Font fontBodyNormal = new Font(Font.FontFamily.HELVETICA, 8, Font.NORMAL, BaseColor.BLACK);
Font fontBodyHeader = new Font(Font.FontFamily.HELVETICA, 12, Font.BOLD, BaseColor.DARK_GRAY);
Font fontBodyHeaderMinor = new Font(Font.FontFamily.HELVETICA, 10, Font.BOLD, BaseColor.DARK_GRAY);
bodyLayoutRects[2].Left = bodyLayoutRects[0].Left = document.LeftMargin;
bodyLayoutRects[1].Top = bodyLayoutRects[0].Top = document.TopMargin;
bodyLayoutRects[2].Right = bodyLayoutRects[0].Right = bodyLayoutRects[0].Left + ((w / 2) - (document.LeftMargin / 2));
bodyLayoutRects[1].Bottom = bodyLayoutRects[0].Bottom = bodyLayoutRects[0].Top + (h - (headerImageHeight - document.TopMargin / 2.0f));
bodyLayoutRects[3].Left = bodyLayoutRects[1].Left = document.LeftMargin + (w / 2) + (document.LeftMargin / 2);
bodyLayoutRects[3].Right = bodyLayoutRects[1].Right = bodyLayoutRects[1].Left + ((w / 2) - (document.LeftMargin));
bodyLayoutRects[3].Top = bodyLayoutRects[2].Top = document.TopMargin;
bodyLayoutRects[3].Bottom = bodyLayoutRects[2].Bottom = bodyLayoutRects[2].Top + (h - (document.TopMargin / 2.0f));
bodyLayoutRects[4].Left = document.LeftMargin;
bodyLayoutRects[4].Right = w;
bodyLayoutRects[4].Top = 0;
bodyLayoutRects[4].Bottom = document.TopMargin / 2;
Rectangle[] headerLayoutRects = new Rectangle[]
{
//
// Title
//
new Rectangle(0, 0, 0, 0),
//
// Info
//
new Rectangle(0, 0, 0, 0),
};
headerLayoutRects[0].Left = document.LeftMargin;
headerLayoutRects[0].Top = document.PageSize.Height - (headerTitleHeight + document.TopMargin / 2);
headerLayoutRects[0].Right = headerLayoutRects[0].Left + headerWidth;
headerLayoutRects[0].Bottom = headerLayoutRects[0].Top + headerTitleHeight;
headerLayoutRects[1].Left = document.LeftMargin;
headerLayoutRects[1].Top = document.PageSize.Height - headerImageHeight + 4;
headerLayoutRects[1].Right = headerLayoutRects[1].Left + headerWidth;
headerLayoutRects[1].Bottom = headerLayoutRects[1].Top + headerInfoHeight;
//
// Cover Image
//
System.Drawing.Image sysCoverImage = CreateCoverImage(config.imageUrl, config.overlayUrl, headerImageWidth * 4, headerImageHeight * 4);
if (sysCoverImage != null)
{
iTextSharp.text.Image coverImage = iTextSharp.text.Image.GetInstance(sysCoverImage, System.Drawing.Imaging.ImageFormat.Jpeg);
if (coverImage != null)
{
coverImage.SetAbsolutePosition(document.PageSize.Width - headerImageWidth, document.PageSize.Height - headerImageHeight);
coverImage.ScaleToFit(headerImageWidth, headerImageHeight);
document.Add(coverImage);
}
}
ColumnText ct = new ColumnText(writer.DirectContent);
//
// Title
//
{
Paragraph p = new Paragraph();
p.Alignment = Element.ALIGN_CENTER;
p.Font = fontTitle;
p.Add(config.title);
ct.AddElement(p);
p = new Paragraph();
p.Alignment = Element.ALIGN_CENTER;
p.Font = fontPrimaryInfo;
p.Add(config.subHeader1);
ct.AddElement(p);
ct.SetSimpleColumn(headerLayoutRects[0]);
ct.Go();
}
//
// Info
//
{
Paragraph p = new Paragraph();
p.Alignment = Element.ALIGN_CENTER;
p.Font = fontSecondaryInfo;
Html2PdfContext ctxSubHeader = new Html2PdfContext()
{
defaultFontSize = fontSecondaryInfo.Size,
defaultAlignment = Element.ALIGN_CENTER,
bodyFont = fontSecondaryInfo,
bodyFontHeader = fontSecondaryInfo,
bodyFontHeaderMinor = fontSecondaryInfo,
};
List <IElement> elementsNutrition = ParseHTML(config.subHeader2, ctxSubHeader);
foreach (IElement el in elementsNutrition)
{
if (el is Paragraph)
{
((Paragraph)el).Alignment = Element.ALIGN_CENTER;
}
ct.AddElement(el);
}
ct.SetSimpleColumn(headerLayoutRects[1]);
ct.Alignment = Element.ALIGN_CENTER;
ct.Go();
}
Html2PdfContext ctx = new Html2PdfContext()
{
defaultFontSize = fontBodyNormal.Size,
bodyFont = fontBodyNormal,
bodyFontHeader = fontBodyHeader,
bodyFontHeaderMinor = fontBodyHeaderMinor,
};
List <IElement> elements = ParseHTML(config.body, ctx);
foreach (IElement el in elements)
{
ct.AddElement(el);
}
int c = 0;
int status = 0;
while (ColumnText.HasMoreText(status))
{
ct.SetSimpleColumn(bodyLayoutRects[c]);
status = ct.Go();
++c;
if (c == 2)
{
ColumnText.ShowTextAligned(writer.DirectContentUnder, Element.ALIGN_CENTER, new Phrase(config.footer, fontFooter),
(bodyLayoutRects[4].Left + bodyLayoutRects[4].Right) / 2,
bodyLayoutRects[4].Bottom - (fontFooter.Size / 2),
0);
document.NewPage();
}
else if (c == 4)
{
ColumnText.ShowTextAligned(writer.DirectContentUnder, Element.ALIGN_CENTER, new Phrase(config.footer, fontFooter),
(bodyLayoutRects[4].Left + bodyLayoutRects[4].Right) / 2,
bodyLayoutRects[4].Bottom - (fontFooter.Size / 2),
0);
document.NewPage();
c = 2;
}
}
//
// needed to ensure we dont access the stream
//
document.Close();
}
MemoryStream msReadFrom = new MemoryStream(ms.GetBuffer());
EncryptPdf(msReadFrom, output);
}
return(true);
}
private static List <IElement> ParseHTML(string rawHtml, Html2PdfContext ctx)
{
List <IElement> elements = new List <IElement>();
MatchCollection matches = _findHtmlToken.Matches(rawHtml);
StringBuilder sb = new StringBuilder();
int lastIndex = 0;
foreach (Match match in matches)
{
int textToEatLen = match.Index - lastIndex;
if (textToEatLen > 0)
{
string textToEat = rawHtml.Substring(lastIndex, textToEatLen);
sb.Append(textToEat);
}
string cleanPara = CleanupParagraph(sb.ToString());
bool isOpeningTag = true;
if (match.Groups[1].Value == "</")
{
isOpeningTag = false;
}
string tag = match.Groups[2].Value.ToLower();
if (isOpeningTag)
{
ctx.EatText(cleanPara, elements);
sb.Clear();
if (tag == "strong")
{
ctx.PushChunkFontStyle(Html2PdfContext.ChunkFontStyle.Strong);
}
else if (tag == "em")
{
ctx.PushChunkFontStyle(Html2PdfContext.ChunkFontStyle.Emphasis);
}
else if (tag == "a")
{
Match hrefMatch = _findHrefLink.Match(match.Value);
if (hrefMatch.Success)
{
string url = hrefMatch.Groups[1].Value;
ctx.currentAnchor = new Anchor();
ctx.currentAnchor.Font = new Font(ctx.bodyFont.BaseFont, ctx.CurrentChunkFontSize, Font.UNDERLINE, ctx.bodyFont.Color);
ctx.currentAnchor.Reference = url;
if (ctx.currentListItem != null)
{
ctx.currentListItem.Add(ctx.currentAnchor);
}
else if (ctx.currentParagraph != null)
{
ctx.currentParagraph.Add(ctx.currentAnchor);
}
}
}
else if (tag == "ul")
{
List list = new List(false, false, ctx.bodyFont.Size * 1.5f);
list.ListSymbol = new Chunk("");
elements.Add(list);
ctx.currentList = list;
ctx.hasListItems = false;
}
else if (tag == "ol")
{
List list = new List(true, false, ctx.bodyFont.Size * 1.5f);
elements.Add(list);
ctx.currentList = list;
ctx.hasListItems = false;
}
else if (tag == "li")
{
if (ctx.currentList == null)
{
List list = new List(false, false);
elements.Add(list);
ctx.currentList = list;
}
ListItem li = new ListItem();
li.SpacingBefore = 4;
li.Font = ctx.bodyFont;
ctx.currentList.Add(li);
ctx.currentListItem = li;
ctx.hasListItems = true;
}
else if (tag == "h1" || tag == "h2" || tag == "h3")
{
ctx.CreateParagraph(Html2PdfContext.ParaStyle.Header, elements);
ctx.PushChunkFontSize(ctx.bodyFontHeader.Size);
}
else if (tag == "h4" || tag == "h5" || tag == "h6")
{
ctx.CreateParagraph(Html2PdfContext.ParaStyle.HeaderMinor, elements);
ctx.PushChunkFontSize(ctx.bodyFontHeaderMinor.Size);
}
else if (IsBlockElementTag(tag))
{
ctx.CreateParagraph(Html2PdfContext.ParaStyle.Body, elements);
ctx.PushChunkFontSize(ctx.bodyFont.Size);
}
else if (IsLineBreakingTag(tag))
{
sb.Append("\n");
}
}
else
{
ctx.EatText(cleanPara, elements);
sb.Clear();
if (tag == "strong" || tag == "em")
{
ctx.PopChunkFontStyle();
}
else if (tag == "h1" || tag == "h2" || tag == "h3" || tag == "h4" || tag == "h5" || tag == "h6" || IsBlockElementTag(tag))
{
ctx.PopChunkFontSize();
}
if (tag == "li")
{
ctx.currentListItem = null;
}
else if (tag == "ol" || tag == "ul")
{
ctx.currentListItem = null;
ctx.currentList = null;
if (ctx.hasListItems)
{
//
// todo: Extra spacing after a list?
//
// elements.Add(new Paragraph(""));
ctx.hasListItems = false;
}
}
else if (tag == "a")
{
ctx.currentAnchor = null;
}
}
lastIndex = match.Index + match.Length;
}
if (lastIndex < rawHtml.Length)
{
string textToEat = rawHtml.Substring(lastIndex);
textToEat = CleanupParagraph(textToEat);
ctx.EatText(textToEat, elements);
}
List <IElement> elementsToRemove = new List <IElement>();
foreach (IElement element in elements)
{
if (element is Paragraph)
{
Paragraph p = (Paragraph)element;
if (p.Count >= 1 && p.Content.Trim().Length == 0)
{
elementsToRemove.Add(p);
}
}
}
foreach (IElement elementToRemove in elementsToRemove)
{
elements.Remove(elementToRemove);
}
return(elements);
}
