Glyphs and Metrics of Type1 Fonts | C++

Get Font Metrics

Aspose.Font for C++ API can read Font Metrics information from Type1 fonts. The following code sample shows how to read metrics information such as Ascender, Descender, TypoAscender, TypoDescender and UnitsPerEm.

For complete examples and data files, please go to https://github.com/aspose-font/Aspose.Font-for-C
System::String fileName = dataDir + u"courier.pfb";
//Font file name with full path
    
System::SharedPtr<FontDefinition> fd = System::MakeObject<FontDefinition>(Aspose::Font::FontType::Type1, System::MakeObject<FontFileDefinition>(u"pfb", System::MakeObject<FileSystemStreamSource>(fileName)));
System::SharedPtr<Type1Font> font = System::DynamicCast_noexcept<Aspose::Font::Type1::Type1Font>(Aspose::Font::Font::Open(fd));
    
System::String name = font->get_FontName();
System::Console::WriteLine(System::String(u"Font name: ") + name);
System::Console::WriteLine(System::String(u"Glyph count: ") + font->get_NumGlyphs());
System::String metrics = System::String::Format(u"Font metrics: ascender - {0}, descender - {1}, typo ascender = {2}, typo descender = {3}, UnitsPerEm = {4}", font->get_Metrics()->get_Ascender(), font->get_Metrics()->get_Descender(), font->get_Metrics()->get_TypoAscender(), font->get_Metrics()->get_TypoDescender(), font->get_Metrics()->get_UnitsPerEM());
    
System::Console::WriteLine(metrics);

Detect Latin Symbols

Aspose.Font for C++ lets you detect Latin Symbols from Type1 font files in your C++ applications. This can be achieved using the following sample code.

• Load the Font file using FontFileDefinition
• Decode the GlyphId using the DecodeToGid() method

  For complete examples and data files, please go to https://github.com/aspose-font/Aspose.Font-for-C
  System::String fileName = dataDir + u"courier.pfb";
  //Font file name with full path
      
  System::SharedPtr<FontDefinition> fd = System::MakeObject<FontDefinition>(Aspose::Font::FontType::Type1, System::MakeObject<FontFileDefinition>(u"pfb", System::MakeObject<FileSystemStreamSource>(fileName)));
  System::SharedPtr<Type1Font> font = System::DynamicCast_noexcept<Aspose::Font::Type1::Type1Font>(Aspose::Font::Font::Open(fd));
      
  bool latinText = true;
      
      
  for (uint32_t code = 65; code < static_cast<uint32_t>(123); code++)
  {
      System::SharedPtr<GlyphId> gid = font->get_Encoding()->DecodeToGid(code);
      if (gid == nullptr || gid == System::StaticCast<System::Object>(GlyphUInt32Id::get_NotDefId()))
      {
          latinText = false;
      }
  }
      
  if (latinText)
  {
      System::Console::WriteLine(System::String::Format(u"Font {0} supports latin symbols.", font->get_FontName()));
  }
  else
  {
      System::Console::WriteLine(System::String::Format(u"Latin symbols are not supported by font {0}.", font->get_FontName()));
  }