protected PdfPage(PdfIndirectReference pages, PdfPageTree parent, PdfObjectType type)
: base(type)
{
GenerationNumber = pages.GenerationNumber;
ObjectNumber = pages.ObjectNumber;
Parent = parent;
}
public PdfPage(PdfIndirectReference pages, PdfPageTree parent)
: this(pages, parent, PdfObjectType.Page)
{
IsContainer = true;
var page = pages.Dereference <PdfDictionary>();
page.ExpectsType("Page");
foreach (PdfKeyValuePair pair in page.Items)
{
HandleKeyValuePair(pair);
}
}
public PdfPageTree(PdfIndirectReference pages, PdfPageTree parent)
: base(pages, parent, PdfObjectType.PageTree)
{
IsContainer = true;
var pageTree = pages.Dereference <PdfDictionary>();
pageTree.ExpectsType("Pages");
foreach (PdfKeyValuePair pair in pageTree.Items)
{
switch (pair.Key.Text)
{
case "Type": // skip Type Pages
break;
case "Kids":
var kids = (PdfArray)pair.Value;
Kids = new List <IPdfObject>();
foreach (PdfIndirectReference item in kids.Items)
{
var dic = item.Dereference <PdfDictionary>();
string type = dic["Type"].Text;
if (type == "Pages")
{
Kids.Add(new PdfPageTree(item, this));
}
else if (type == "Page")
{
Kids.Add(new PdfPage(item, this));
}
else
{
throw new Exception("Content of Kids in a Page Tree Node must be either a Page or another Page Tree Node");
}
}
break;
case "Count":
Count = new PdfCount(pair.Value as PdfNumeric);
_items.Add(Count);
break;
default:
HandleKeyValuePair(pair);
break;
}
}
_items.AddRange(Kids);
}
public PdfPageTree(PdfIndirectReference pages, PdfPageTree parent)
: base(pages, parent, PdfObjectType.PageTree)
{
IsContainer = true;
var pagetree = pages.Dereference<PdfDictionary>();
pagetree.ExpectsType("Pages");
foreach (PdfKeyValuePair pair in pagetree.Items)
{
switch (pair.Key.Text)
{
case "Type": // skip Type Pages
break;
case "Kids":
PdfArray kids = pair.Value as PdfArray;
Kids = new List<IPdfObject>();
foreach (PdfIndirectReference item in kids.Items)
{
var dic = item.Dereference<PdfDictionary>();
String type = dic["Type"].Text;
if (type == "Pages")
Kids.Add(new PdfPageTree(item, this));
else if (type == "Page")
Kids.Add(new PdfPage(item, this));
else
throw new Exception("Content of Kids in a Page Tree Node must be either a Page or another Page Tree Node");
}
break;
case "Count":
Count = new PdfCount(pair.Value as PdfNumeric);
_items.Add(Count);
break;
default:
HandleKeyValuePair(pair);
break;
}
}
_items.AddRange(Kids);
}
public PdfCatalog(PdfDictionary catalog)
: base(PdfObjectType.Catalog)
{
IsContainer = true;
catalog.ExpectsType("Catalog");
foreach (PdfKeyValuePair pair in catalog.Items)
{
switch (pair.Key.Text)
{
case "Type": // skip Type Catalog
break;
case "Pages":
Pages = new PdfPageTree(catalog["Pages"] as PdfIndirectReference);
break;
default:
_items.Add(pair);
break;
}
}
}