internal void Read()
{
try
{
int tableOffset = _fontData.Position;
version = _fontData.ReadUShort();
numTables = _fontData.ReadUShort();
#if DEBUG_
if (_fontData.Name == "Cambria")
{
Debug - Break.Break();
}
#endif
bool success = false;
for (int idx = 0; idx < numTables; idx++)
{
PlatformId platformId = (PlatformId)_fontData.ReadUShort();
int encodingId = _fontData.ReadUShort();
int offset = _fontData.ReadLong();
int currentPosition = _fontData.Position;
// Just read Windows stuff.
if (platformId == PlatformId.Win && ((WinEncodingId)encodingId == WinEncodingId.Symbol || (WinEncodingId)encodingId == WinEncodingId.Unicode))
{
symbol = (WinEncodingId)encodingId == WinEncodingId.Symbol;
_fontData.Position = tableOffset + offset;
cmap4 = new CMap4(_fontData, (WinEncodingId)encodingId);
_fontData.Position = currentPosition;
// We have found what we are looking for, so break.
success = true;
break;
}
if (platformId == PlatformId.Apple && (AppleEncodingId)encodingId == AppleEncodingId.Unicode20BmpOnly)
{
symbol = false;
_fontData.Position = tableOffset + offset;
cmap4 = new CMap4(_fontData, WinEncodingId.Unicode);
_fontData.Position = currentPosition;
// We have found what we are looking for, so break.
success = true;
break;
}
}
if (!success)
{
throw new InvalidOperationException("Font has no usable platform or encoding ID. It cannot be used with PDFsharp.");
}
}
catch (Exception ex)
{
throw new InvalidOperationException(PSSR.ErrorReadingFontData, ex);
}
}
/// <summary>
/// Create a WPF GlyphTypeface and retrieve font data from it.
/// </summary>
internal static XFontSource CreateFontSource(string familyName, FontResolvingOptions fontResolvingOptions,
out WpfFontFamily wpfFontFamily, out WpfTypeface wpfTypeface, out WpfGlyphTypeface wpfGlyphTypeface, string typefaceKey)
{
if (string.IsNullOrEmpty(typefaceKey))
{
typefaceKey = XGlyphTypeface.ComputeKey(familyName, fontResolvingOptions);
}
XFontStyle style = fontResolvingOptions.FontStyle;
#if DEBUG
if (StringComparer.OrdinalIgnoreCase.Compare(familyName, "Segoe UI Semilight") == 0 &&
(style & XFontStyle.BoldItalic) == XFontStyle.Italic)
{
familyName.GetType();
}
#endif
// Use WPF technique to create font data.
wpfTypeface = XPrivateFontCollection.TryCreateTypeface(familyName, style, out wpfFontFamily);
#if DEBUG__
if (wpfTypeface != null)
{
WpfGlyphTypeface glyphTypeface;
ICollection <WpfTypeface> list = wpfFontFamily.GetTypefaces();
foreach (WpfTypeface tf in list)
{
if (!tf.TryGetGlyphTypeface(out glyphTypeface))
{
Debug - Break.Break();
}
}
//if (!WpfTypeface.TryGetGlyphTypeface(out glyphTypeface))
// throw new InvalidOperationException(PSSR.CannotGetGlyphTypeface(familyName));
}
#endif
if (wpfFontFamily == null)
{
wpfFontFamily = new WpfFontFamily(familyName);
}
if (wpfTypeface == null)
{
wpfTypeface = FontHelper.CreateTypeface(wpfFontFamily, style);
}
// Let WPF choose the right glyph typeface.
if (!wpfTypeface.TryGetGlyphTypeface(out wpfGlyphTypeface))
{
throw new InvalidOperationException(PSSR.CannotGetGlyphTypeface(familyName));
}
// Get or create the font source and cache it unter the specified typeface key.
XFontSource fontSource = XFontSource.GetOrCreateFromWpf(typefaceKey, wpfGlyphTypeface);
return(fontSource);
}
/// <summary>
/// When overridden in a derived class, encodes a set of characters from the specified character array into the specified byte array.
/// </summary>
/// <param name="chars">The character array containing the set of characters to encode.</param>
/// <param name="charIndex">The index of the first character to encode.</param>
/// <param name="charCount">The number of characters to encode.</param>
/// <param name="bytes">The byte array to contain the resulting sequence of bytes.</param>
/// <param name="byteIndex">The index at which to start writing the resulting sequence of bytes.</param>
/// <returns>
/// The actual number of bytes written into <paramref name="bytes"/>.
/// </returns>
public override int GetBytes(char[] chars, int charIndex, int charCount, byte[] bytes, int byteIndex)
{
for (int count = charCount; count > 0; charIndex++, byteIndex++, count--)
{
#if DEBUG_
if ((uint)chars[charIndex] > 255)
{
Debug - Break.Break(true);
}
#endif
//Debug.Assert((uint)chars[charIndex] < 256, "Raw string contains invalid character with a value > 255.");
bytes[byteIndex] = (byte)chars[charIndex];
//#warning Here is a HACK that must not be ignored!
// HACK:
// bytes[byteIndex] = (byte)chars[charIndex];
}
return(charCount);
}
/// <summary>
/// Create a GDI+ font and use its handle to retrieve font data using native calls.
/// </summary>
internal static XFontSource CreateFontSource(string familyName, FontResolvingOptions fontResolvingOptions, out GdiFont font, string typefaceKey)
{
if (string.IsNullOrEmpty(typefaceKey))
{
typefaceKey = XGlyphTypeface.ComputeKey(familyName, fontResolvingOptions);
}
#if true_
if (familyName == "Cambria")
{
Debug - Break.Break();
}
#endif
GdiFontStyle gdiStyle = (GdiFontStyle)(fontResolvingOptions.FontStyle & XFontStyle.BoldItalic);
// Create a 10 point GDI+ font as an exemplar.
XFontSource fontSource;
font = FontHelper.CreateFont(familyName, 10, gdiStyle, out fontSource);
if (fontSource != null)
{
Debug.Assert(font != null);
// Case: Font was created by a GDI+ private font collection.
#if true
#if DEBUG
XFontSource existingFontSource;
Debug.Assert(FontFactory.TryGetFontSourceByTypefaceKey(typefaceKey, out existingFontSource) &&
ReferenceEquals(fontSource, existingFontSource));
#endif
#else
// Win32 API cannot get font data from fonts created by private font collection,
// because this is handled internally in GDI+.
// Therefore the font source was created when the private font is added to the private font collection.
if (!FontFactory.TryGetFontSourceByTypefaceKey(typefaceKey, out fontSource))
{
// Simplify styles.
// (The code is written for clarity - do not rearrange for optimization)
if (font.Bold && font.Italic)
{
if (FontFactory.TryGetFontSourceByTypefaceKey(XGlyphTypeface.ComputeKey(font.Name, true, false), out fontSource))
{
// Use bold font.
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
else if (FontFactory.TryGetFontSourceByTypefaceKey(XGlyphTypeface.ComputeKey(font.Name, false, true), out fontSource))
{
// Use italic font.
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
else if (FontFactory.TryGetFontSourceByTypefaceKey(XGlyphTypeface.ComputeKey(font.Name, false, false), out fontSource))
{
// Use regular font.
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
}
else if (font.Bold || font.Italic)
{
// Use regular font.
if (FontFactory.TryGetFontSourceByTypefaceKey(XGlyphTypeface.ComputeKey(font.Name, false, false), out fontSource))
{
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
}
else
{
if (FontFactory.TryGetFontSourceByTypefaceKey(XGlyphTypeface.ComputeKey(font.Name, false, false), out fontSource))
{
// Should never come here...
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
}
}
#endif
}
else
{
// Get or create the font source and cache it unter the specified typeface key.
fontSource = XFontSource.GetOrCreateFromGdi(typefaceKey, font);
}
return(fontSource);
}
/// <summary>
/// Inserts pages of the specified document into this document.
/// </summary>
/// <param name="index">The index in this document where to insert the page .</param>
/// <param name="document">The document to be inserted.</param>
/// <param name="startIndex">The index of the first page to be inserted.</param>
/// <param name="pageCount">The number of pages to be inserted.</param>
public void InsertRange(int index, PdfDocument document, int startIndex, int pageCount)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
if (index < 0 || index > Count)
{
throw new ArgumentOutOfRangeException("index", "Argument 'index' out of range.");
}
int importDocumentPageCount = document.PageCount;
if (startIndex < 0 || startIndex + pageCount > importDocumentPageCount)
{
throw new ArgumentOutOfRangeException("startIndex", "Argument 'startIndex' out of range.");
}
if (pageCount > importDocumentPageCount)
{
throw new ArgumentOutOfRangeException("pageCount", "Argument 'pageCount' out of range.");
}
PdfPage[] insertPages = new PdfPage[pageCount];
PdfPage[] importPages = new PdfPage[pageCount];
// 1st create all new pages.
for (int idx = 0, insertIndex = index, importIndex = startIndex;
importIndex < startIndex + pageCount;
idx++, insertIndex++, importIndex++)
{
PdfPage importPage = document.Pages[importIndex];
PdfPage page = ImportExternalPage(importPage);
insertPages[idx] = page;
importPages[idx] = importPage;
Owner._irefTable.Add(page);
// Add page substitute to importedObjectTable.
PdfImportedObjectTable importedObjectTable = Owner.FormTable.GetImportedObjectTable(importPage);
importedObjectTable.Add(importPage.ObjectID, page.Reference);
PagesArray.Elements.Insert(insertIndex, page.Reference);
if (Owner.Settings.TrimMargins.AreSet)
{
page.TrimMargins = Owner.Settings.TrimMargins;
}
}
Elements.SetInteger(Keys.Count, PagesArray.Elements.Count);
// 2nd copy link annotations that are in the range of the imported pages.
for (int idx = 0, importIndex = startIndex;
importIndex < startIndex + pageCount;
idx++, importIndex++)
{
PdfPage importPage = document.Pages[importIndex];
PdfPage page = insertPages[idx];
// Get annotations.
PdfArray annots = importPage.Elements.GetArray(PdfPage.Keys.Annots);
if (annots != null)
{
PdfAnnotations annotations = new PdfAnnotations(Owner);
// Loop through annotations.
int count = annots.Elements.Count;
for (int idxAnnotation = 0; idxAnnotation < count; idxAnnotation++)
{
PdfDictionary annot = annots.Elements.GetDictionary(idxAnnotation);
if (annot != null)
{
string subtype = annot.Elements.GetString(PdfAnnotation.Keys.Subtype);
if (subtype == "/Link")
{
bool addAnnotation = false;
PdfLinkAnnotation newAnnotation = new PdfLinkAnnotation(Owner);
PdfName[] importAnnotationKeyNames = annot.Elements.KeyNames;
foreach (PdfName pdfItem in importAnnotationKeyNames)
{
PdfItem impItem;
switch (pdfItem.Value)
{
case "/BS":
newAnnotation.Elements.Add("/BS", new PdfLiteral("<</W 0>>"));
break;
case "/F": // /F 4
impItem = annot.Elements.GetValue("/F");
Debug.Assert(impItem is PdfInteger);
newAnnotation.Elements.Add("/F", impItem.Clone());
break;
case "/Rect": // /Rect [68.6 681.08 145.71 702.53]
impItem = annot.Elements.GetValue("/Rect");
Debug.Assert(impItem is PdfArray);
newAnnotation.Elements.Add("/Rect", impItem.Clone());
break;
case "/StructParent": // /StructParent 3
impItem = annot.Elements.GetValue("/StructParent");
Debug.Assert(impItem is PdfInteger);
newAnnotation.Elements.Add("/StructParent", impItem.Clone());
break;
case "/Subtype": // Already set.
break;
case "/Dest": // /Dest [30 0 R /XYZ 68 771 0]
impItem = annot.Elements.GetValue("/Dest");
impItem = impItem.Clone();
// Is value an array with 5 elements where the first one is an iref?
PdfArray destArray = impItem as PdfArray;
if (destArray != null && destArray.Elements.Count == 5)
{
PdfReference iref = destArray.Elements[0] as PdfReference;
if (iref != null)
{
iref = RemapReference(insertPages, importPages, iref);
if (iref != null)
{
destArray.Elements[0] = iref;
newAnnotation.Elements.Add("/Dest", destArray);
addAnnotation = true;
}
}
}
break;
default:
#if DEBUG_
Debug - Break.Break(true);
#endif
break;
}
}
// Add newAnnotations only it points to an imported page.
if (addAnnotation)
{
annotations.Add(newAnnotation);
}
}
}
}
// At least one link annotation found?
if (annotations.Count > 0)
{
//Owner._irefTable.Add(annotations);
page.Elements.Add(PdfPage.Keys.Annots, annotations);
}
}
}
}
/// <summary>
/// Reads all required tables from the font data.
/// </summary>
internal void Read()
{
// Determine font technology
// ReSharper disable InconsistentNaming
const uint OTTO = 0x4f54544f; // Adobe OpenType CFF data, tag: 'OTTO'
const uint TTCF = 0x74746366; // TrueType Collection tag: 'ttcf'
// ReSharper restore InconsistentNaming
try
{
#if DEBUG_
if (Name == "Cambria")
{
Debug - Break.Break();
}
#endif
// Check if data is a TrueType collection font.
uint startTag = ReadULong();
if (startTag == TTCF)
{
_fontTechnology = FontTechnology.TrueTypeCollection;
throw new InvalidOperationException("TrueType collection fonts are not yet supported by PdfSharpCore.");
}
// Read offset table
_offsetTable.Version = startTag;
_offsetTable.TableCount = ReadUShort();
_offsetTable.SearchRange = ReadUShort();
_offsetTable.EntrySelector = ReadUShort();
_offsetTable.RangeShift = ReadUShort();
// Move to table dictionary at position 12
Debug.Assert(_pos == 12);
//tableDictionary = (offsetTable.TableCount);
if (_offsetTable.Version == OTTO)
{
_fontTechnology = FontTechnology.PostscriptOutlines;
}
else
{
_fontTechnology = FontTechnology.TrueTypeOutlines;
}
for (int idx = 0; idx < _offsetTable.TableCount; idx++)
{
TableDirectoryEntry entry = TableDirectoryEntry.ReadFrom(this);
TableDictionary.Add(entry.Tag, entry);
#if VERBOSE
Debug.WriteLine(String.Format("Font table: {0}", entry.Tag));
#endif
}
// PDFlib checks this, but it is not part of the OpenType spec anymore
if (TableDictionary.ContainsKey("bhed"))
{
throw new NotSupportedException("Bitmap fonts are not supported by PdfSharpCore.");
}
// Read required tables
if (Seek(CMapTable.Tag) != -1)
{
cmap = new CMapTable(this);
}
if (Seek(ControlValueTable.Tag) != -1)
{
cvt = new ControlValueTable(this);
}
if (Seek(FontProgram.Tag) != -1)
{
fpgm = new FontProgram(this);
}
if (Seek(MaximumProfileTable.Tag) != -1)
{
maxp = new MaximumProfileTable(this);
}
if (Seek(NameTable.Tag) != -1)
{
name = new NameTable(this);
}
if (Seek(FontHeaderTable.Tag) != -1)
{
head = new FontHeaderTable(this);
}
if (Seek(HorizontalHeaderTable.Tag) != -1)
{
hhea = new HorizontalHeaderTable(this);
}
if (Seek(HorizontalMetricsTable.Tag) != -1)
{
hmtx = new HorizontalMetricsTable(this);
}
if (Seek(OS2Table.Tag) != -1)
{
os2 = new OS2Table(this);
}
if (Seek(PostScriptTable.Tag) != -1)
{
post = new PostScriptTable(this);
}
if (Seek(GlyphDataTable.Tag) != -1)
{
glyf = new GlyphDataTable(this);
}
if (Seek(IndexToLocationTable.Tag) != -1)
{
loca = new IndexToLocationTable(this);
}
if (Seek(GlyphSubstitutionTable.Tag) != -1)
{
gsub = new GlyphSubstitutionTable(this);
}
if (Seek(ControlValueProgram.Tag) != -1)
{
prep = new ControlValueProgram(this);
}
}
catch (Exception)
{
GetType();
throw;
}
}
