lsm/PdfPig
1
0
Fork 0
mirror of https://github.com/UglyToad/PdfPig.git synced 2025-09-21 04:17:57 +08:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

wire up cidtogid map for type2cid fonts

Browse Source
This commit is contained in:
Eliot Jones
2018-04-14 18:53:31 +01:00
parent 983933b6e8
commit f1c01b5576
8 changed files with 106 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
src/UglyToad.PdfPig/Fonts/Parser/Parts/CidFontFactory.cs
View File

@@ -52,7 +52,7 @@
var baseFont = dictionary.GetNameOrDefault(NameToken.BaseFont);
var systemInfo = GetSystemInfo(dictionary);
var subType = dictionary.GetNameOrDefault(NameToken.Subtype);
if (NameToken.CidFontType0.Equals(subType))
{
@@ -61,12 +61,14 @@
if (NameToken.CidFontType2.Equals(subType))
{
return new Type2CidFont(type, subType, baseFont, systemInfo, descriptor, fontProgram, verticalWritingMetrics, widths);
var cidToGid = GetCharacterIdentifierToGlyphIndexMap(dictionary, isLenientParsing);
return new Type2CidFont(type, subType, baseFont, systemInfo, descriptor, fontProgram, verticalWritingMetrics, widths, cidToGid);
}
return null;
}
private bool TryGetFontDescriptor(DictionaryToken dictionary, out DictionaryToken descriptorDictionary)
{
descriptorDictionary = null;
@@ -152,7 +154,7 @@
return widths;
}
private VerticalWritingMetrics ReadVerticalDisplacements(DictionaryToken dict)
private static VerticalWritingMetrics ReadVerticalDisplacements(DictionaryToken dict)
{
var verticalDisplacements = new Dictionary<int, decimal>();
var positionVectors = new Dictionary<int, PdfVector>();
@@ -237,6 +239,30 @@
return new CharacterIdentifierSystemInfo(registry, ordering, supplement);
}
private CharacterIdentifierToGlyphIndexMap GetCharacterIdentifierToGlyphIndexMap(DictionaryToken dictionary, bool isLenientParsing)
{
if (!dictionary.TryGet(NameToken.CidToGidMap, out var entry))
{
return new CharacterIdentifierToGlyphIndexMap();
}
if (entry is NameToken name)
{
if (!name.Equals(NameToken.CidToGidMap) && !isLenientParsing)
{
throw new InvalidOperationException($"The CIDToGIDMap in a Type 0 font should have the value /Identity, instead got: {name}.");
}
return new CharacterIdentifierToGlyphIndexMap();
}
var stream = DirectObjectFinder.Get<StreamToken>(entry, pdfScanner);
var bytes = stream.Decode(filterProvider);
return new CharacterIdentifierToGlyphIndexMap(bytes);
}
private string SafeKeyAccess(DictionaryToken dictionary, NameToken keyName)
{
if (!dictionary.TryGet(keyName, out var token))