mirror of
https://github.com/UglyToad/PdfPig.git
synced 2026-03-10 00:23:29 +08:00
1ef2e127a6
* Make AdobeFontMetricsLigature a struct * Make AdobeFontMetricsCharacterSize a struct * Eliminate allocation in CompactFontFormatData * Pass TransformationMatrix by reference * Seal Encoding classes * Make SubTableHeaderEntry a readonly struct * Introduce StringSplitter and eliminate various allocations in GlyphListFactory * Eliminate a few substring allocations * Use char overload on StringBuilder * Eliminate virtual calls on stringIndex * Optimize ReadHelper ReadLong and ReadInt methods * Add additional readonly annotations to PdfRectangle * Optimize NameTokenizer * Eliminate allocation in TrueTypeGlyphTableSubsetter * Use empty arrays * Eliminate allocations in OperationWriteHelper.WriteHex * Use simplified DecryptCbc method on .NET 6+ * Fix windows-1252 encoding not working on net6.0 and 8.0 * Update int buffers to exact unsigned max length and eliminate additional byte allocation * Fix typo * Remove unused constant
172 lines
8.1 KiB
C#
172 lines
8.1 KiB
C#
namespace UglyToad.PdfPig.Fonts.CompactFontFormat.Dictionaries
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{
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using System;
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using System.Collections.Generic;
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using Core;
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internal class CompactFontFormatTopLevelDictionaryReader : CompactFontFormatDictionaryReader<CompactFontFormatTopLevelDictionary, CompactFontFormatTopLevelDictionary>
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{
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public override CompactFontFormatTopLevelDictionary Read(CompactFontFormatData data, ReadOnlySpan<string> stringIndex)
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{
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var dictionary = new CompactFontFormatTopLevelDictionary();
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ReadDictionary(dictionary, data, stringIndex);
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return dictionary;
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}
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protected override void ApplyOperation(CompactFontFormatTopLevelDictionary dictionary, List<Operand> operands, OperandKey key, ReadOnlySpan<string> stringIndex)
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{
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switch (key.Byte0)
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{
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case 0:
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dictionary.Version = GetString(operands, stringIndex);
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break;
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case 1:
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dictionary.Notice = GetString(operands, stringIndex);
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break;
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case 2:
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dictionary.FullName = GetString(operands, stringIndex);
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break;
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case 3:
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dictionary.FamilyName = GetString(operands, stringIndex);
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break;
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case 4:
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dictionary.Weight = GetString(operands, stringIndex);
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break;
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case 5:
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dictionary.FontBoundingBox = GetBoundingBox(operands);
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break;
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case 12:
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{
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if (!key.Byte1.HasValue)
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{
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throw new InvalidOperationException("A single byte sequence beginning with 12 was found.");
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}
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switch (key.Byte1.Value)
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{
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case 0:
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dictionary.Copyright = GetString(operands, stringIndex);
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break;
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case 1:
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dictionary.IsFixedPitch = operands[0].Double == 1;
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break;
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case 2:
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dictionary.ItalicAngle = operands[0].Double;
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break;
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case 3:
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dictionary.UnderlinePosition = operands[0].Double;
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break;
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case 4:
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dictionary.UnderlineThickness = operands[0].Double;
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break;
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case 5:
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dictionary.PaintType = operands[0].Double;
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break;
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case 6:
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dictionary.CharStringType = (CompactFontFormatCharStringType)GetIntOrDefault(operands, 2);
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break;
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case 7:
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{
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var array = ToArray(operands);
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if (array.Length == 4)
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{
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dictionary.FontMatrix = TransformationMatrix.FromArray(array);
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}
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else if (array.Length == 6)
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{
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dictionary.FontMatrix = TransformationMatrix.FromArray(array);
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}
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else
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{
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throw new InvalidOperationException($"Expected four values for the font matrix, instead got: {array.Length}.");
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}
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}
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break;
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case 8:
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dictionary.StrokeWidth = operands[0].Double;
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break;
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case 20:
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dictionary.SyntheticBaseFontIndex = GetIntOrDefault(operands);
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break;
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case 21:
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dictionary.PostScript = GetString(operands, stringIndex);
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break;
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case 22:
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dictionary.BaseFontName = GetString(operands, stringIndex);
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break;
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case 23:
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dictionary.BaseFontBlend = ReadDeltaToArray(operands);
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break;
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// TODO: CID Font Stuff
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case 30:
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var registry = GetString(operands, stringIndex);
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operands.RemoveAt(0);
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var ordering = GetString(operands, stringIndex);
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operands.RemoveAt(0);
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var supplement = GetIntOrDefault(operands);
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dictionary.CidFontOperators.Ros = new RegistryOrderingSupplement
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{
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Registry = registry,
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Ordering = ordering,
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Supplement = supplement
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};
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dictionary.IsCidFont = true;
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break;
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case 31:
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dictionary.CidFontOperators.Version = GetIntOrDefault(operands);
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break;
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case 32:
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dictionary.CidFontOperators.Revision = GetIntOrDefault(operands);
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break;
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case 33:
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dictionary.CidFontOperators.Type = GetIntOrDefault(operands);
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break;
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case 34:
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dictionary.CidFontOperators.Count = GetIntOrDefault(operands);
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break;
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case 35:
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dictionary.CidFontOperators.UidBase = GetIntOrDefault(operands);
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break;
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case 36:
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dictionary.CidFontOperators.FontDictionaryArray = GetIntOrDefault(operands);
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break;
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case 37:
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dictionary.CidFontOperators.FontDictionarySelect = GetIntOrDefault(operands);
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break;
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case 38:
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dictionary.CidFontOperators.FontName = GetString(operands, stringIndex);
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break;
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}
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}
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break;
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case 13:
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dictionary.UniqueId = operands.Count > 0 ? operands[0].Double : 0;
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break;
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case 14:
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dictionary.Xuid = ToArray(operands);
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break;
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case 15:
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dictionary.CharSetOffset = GetIntOrDefault(operands);
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break;
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case 16:
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dictionary.EncodingOffset = GetIntOrDefault(operands);
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break;
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case 17:
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dictionary.CharStringsOffset = GetIntOrDefault(operands);
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break;
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case 18:
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{
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var size = GetIntOrDefault(operands);
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operands.RemoveAt(0);
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var offset = GetIntOrDefault(operands);
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dictionary.PrivateDictionaryLocation = new CompactFontFormatTopLevelDictionary.SizeAndOffset(size, offset);
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}
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break;
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}
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}
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}
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}
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