/// <summary>
/// Adds an object to the document.
/// </summary>
/// <returns>The added object.</returns>
private PortableDocumentObject AddObject()
{
var obj = new PortableDocumentObject(this.objects.Count + 1);
this.objects.Add(obj);
return(obj);
}
/// <summary>
/// Adds a page specified by width and height.
/// </summary>
/// <param name="width">The page width in points.</param>
/// <param name="height">The page height in points.</param>
public void AddPage(double width = 595, double height = 842)
{
this.PageWidth = width;
this.PageHeight = height;
this.currentPageContents = this.AddObject();
var page1 = this.AddObject(PdfWriter.ObjectType.Page);
page1["/Parent"] = this.pages;
page1["/MediaBox"] = new[] { 0d, 0d, width, height };
page1["/Contents"] = this.currentPageContents;
page1["/Resources"] = this.resources;
this.pageReferences.Add(page1);
}
/// <summary>
/// Adds a font.
/// </summary>
/// <param name="font">The font.</param>
/// <returns>The added object.</returns>
private string AddFont(PortableDocumentFont font)
{
//// For the standard 14 fonts, the entries FirstChar, LastChar, Widths, and FontDescriptor must either all be
//// present or all be absent. Ordinarily, they are absent; specifying them enables a standard font to be overridden
PortableDocumentObject fd = null;
if (font.SubType != FontSubType.Type1)
{
fd = this.AddObject(PdfWriter.ObjectType.FontDescriptor);
fd["/Ascent"] = font.Ascent;
fd["/CapHeight"] = font.CapHeight;
fd["/Descent"] = font.Descent;
fd["/Flags"] = font.Flags;
fd["/FontBBox"] = font.FontBoundingBox;
fd["/ItalicAngle"] = font.ItalicAngle;
fd["/StemV"] = font.StemV;
fd["/XHeight"] = font.XHeight;
fd["/FontName"] = "/" + font.FontName;
}
var f = this.AddObject(PdfWriter.ObjectType.Font);
f["/Subtype"] = "/" + font.SubType;
f["/Encoding"] = "/" + font.Encoding;
f["/BaseFont"] = "/" + font.BaseFont;
if (fd != null)
{
f["/FontDescriptor"] = fd;
}
if (font.SubType != FontSubType.Type1)
{
// Optional for Type 1 fonts
f["/FirstChar"] = font.FirstChar;
f["/LastChar"] = font.FirstChar + font.Widths.Length - 1;
f["/Widths"] = font.Widths;
}
int i = this.fonts.Count + 1;
string fontId = "/F" + i;
this.fonts.Add(fontId, f);
return(fontId);
}
/// <summary>
/// Initializes a new instance of the <see cref="PortableDocument" /> class.
/// </summary>
public PortableDocument()
{
this.metadata = this.AddObject();
this.metadata["/CreationDate"] = DateTime.Now;
this.catalog = this.AddObject(PdfWriter.ObjectType.Catalog);
this.pages = this.AddObject(PdfWriter.ObjectType.Pages);
this.catalog["/Pages"] = this.pages;
this.fonts = new Dictionary <string, object>();
this.xobjects = new Dictionary <string, object>();
this.extgstate = new Dictionary <string, object>();
this.resources = this.AddObject();
// See chapter 10.1 - ProcSet is obsolete from version 1.4?
this.resources["/ProcSet"] = new[] { "/PDF", "/Text", "/ImageB", "/ImageC", "/ImageI" };
this.resources["/Font"] = this.fonts;
this.resources["/XObject"] = this.xobjects;
this.resources["/ExtGState"] = this.extgstate;
this.currentFont = StandardFonts.Helvetica.GetFont(false, false);
this.currentFontSize = 12;
}
