AddRelationship(
)
{
if (!_curPageRelAdded && CurrentPageReferences)
{
FontEmbeddingAction action = XpsFontSubsetter.DetermineEmbeddingAction(_glyphTypeface);
switch (action)
{
case FontEmbeddingAction.ImageOnlyFont:
break;
case FontEmbeddingAction.ObfuscateOnlyFont:
case FontEmbeddingAction.ObfuscateSubsetFont:
_packagingPolicy.
RelateResourceToCurrentPage(
_fontResourceStream.Uri,
XpsS0Markup.ResourceRelationshipName);
break;
}
}
// Now we are finished with the current page
// and need flag the need for relationship on the next
_curPageRelAdded = false;
}
AddGlyphRunUsage(
GlyphRun glyphRun
)
{
Uri fontUri = null;
FontEmbeddingAction action = XpsFontSubsetter.DetermineEmbeddingAction(_glyphTypeface);
switch (action)
{
//
// Provide an empty image stream. The Glyphs serializer
// will check content type and render adn serialize an
// image into this stream based on content type
//
case FontEmbeddingAction.ImageOnlyFont:
break;
case FontEmbeddingAction.ObfuscateOnlyFont:
fontUri = _fontResourceStream.Uri;
// nothing to do here since the entire font will be added
break;
case FontEmbeddingAction.ObfuscateSubsetFont:
_fontEmbeddingManager.RecordUsage(glyphRun);
fontUri = _fontResourceStream.Uri;
break;
}
return(fontUri);
}
AddRestrictedRelationship(
)
{
FontEmbeddingAction action = XpsFontSubsetter.DetermineEmbeddingAction(_glyphTypeface);
if (action != FontEmbeddingAction.ImageOnlyFont &&
XpsFontSubsetter.IsRestrictedFont(_glyphTypeface))
{
_packagingPolicy.
RelateRestrictedFontToCurrentDocument(
_fontResourceStream.Uri
);
}
}
AddGlyphRunUsage(
GlyphRun glyphRun
)
{
Uri fontUri = null;
FontEmbeddingAction action = XpsFontSubsetter.DetermineEmbeddingAction(_glyphTypeface);
switch (action)
{
//
// Provide an empty image stream. The Glyphs serializer
// will check content type and render adn serialize an
// image into this stream based on content type
//
case FontEmbeddingAction.ImageOnlyFont:
break;
case FontEmbeddingAction.ObfuscateOnlyFont:
fontUri = _fontResourceStream.Uri;
// nothing to do here since the entire font will be added
break;
case FontEmbeddingAction.ObfuscateSubsetFont:
CodeAccessPermission uriDiscoveryPermission = glyphRun.GlyphTypeface.CriticalUriDiscoveryPermission;
if (uriDiscoveryPermission != null)
{
uriDiscoveryPermission.Assert();
}
try
{
_fontEmbeddingManager.RecordUsage(glyphRun);
}
finally
{
if (uriDiscoveryPermission != null)
{
CodeAccessPermission.RevertAssert();
}
}
fontUri = _fontResourceStream.Uri;
break;
}
return(fontUri);
}
Commit(
)
{
FontEmbeddingAction action = XpsFontSubsetter.DetermineEmbeddingAction(_glyphTypeface);
switch (action)
{
case FontEmbeddingAction.ImageOnlyFont:
// nothing to do here since the glyph runs have already been converted
break;
case FontEmbeddingAction.ObfuscateOnlyFont:
CopyFontStream();
break;
case FontEmbeddingAction.ObfuscateSubsetFont:
SubSetFont(
_fontEmbeddingManager.GetUsedGlyphs(_fontUri),
_fontResourceStream.Stream
);
break;
}
}
