diff options
Diffstat (limited to 'src/libnrtype')
| -rw-r--r-- | src/libnrtype/FontFactory.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/libnrtype/FontFactory.cpp b/src/libnrtype/FontFactory.cpp index fa452dd77..e11fed20c 100644 --- a/src/libnrtype/FontFactory.cpp +++ b/src/libnrtype/FontFactory.cpp @@ -97,6 +97,7 @@ font_factory::font_factory(void) : fontSize(512), loadedPtr(new FaceMapType()) { + // std::cout << pango_version_string() << std::endl; #ifdef USE_PANGO_WIN32 #else pango_ft2_font_map_set_resolution(PANGO_FT2_FONT_MAP(fontServer), @@ -545,6 +546,7 @@ void font_factory::GetUIFamiliesAndStyles(FamilyToStylesMap *map) if (faceDescr) { Glib::ustring familyUIName = GetUIFamilyString(faceDescr); Glib::ustring styleUIName = GetUIStyleString(faceDescr); + // std::cout << familyUIName << " " << styleUIName << " (" << displayName << ")" << std::endl; // Disable synthesized (faux) font faces except for CSS generic faces if (pango_font_face_is_synthesized(faces[currentFace]) ) { @@ -558,6 +560,35 @@ void font_factory::GetUIFamiliesAndStyles(FamilyToStylesMap *map) } } + // Pango breaks the 1 to 1 mapping between Pango weights and CSS weights by + // adding Semi-Light (as of 1.36.7), Book (as of 1.24), and Ultra-Heavy (as of + // 1.24). We need to map these weights to CSS weights. Book and Ultra-Heavy + // are rarely used. Semi-Light (350) is problematic as it is halfway between + // Light (300) and Normal (400) and if care is not taken it is converted to + // Normal, rather than Light. + // + // Note: The ultimate solution to handling various weight in the same + // font family is to support the @font rules from CSS. + // + // Additional notes, helpful for debugging: + // Pango's FC backend: + // Weights defined in fontconfig/fontconfig.h + // String equivalents in src/fcfreetype.c + // Weight set from os2->usWeightClass + // Use Fontforge: Element->Font Info...->OS/2->Misc->Weight Class to check font weight + size_t f = styleUIName.find( "Book" ); + if( f != Glib::ustring::npos ) { + styleUIName.replace( f, 4, "Normal" ); + } + f = styleUIName.find( "Semi-Light" ); + if( f != Glib::ustring::npos ) { + styleUIName.replace( f, 10, "Light" ); + } + f = styleUIName.find( "Ultra-Heavy" ); + if( f != Glib::ustring::npos ) { + styleUIName.replace( f, 11, "Heavy" ); + } + if (!familyUIName.empty() && !styleUIName.empty()) { // Find the right place to put the style information, adding @@ -581,6 +612,7 @@ void font_factory::GetUIFamiliesAndStyles(FamilyToStylesMap *map) ++it) { if ( (*it).CssName == styleUIName) { exists = true; + std::cerr << "Warning: Font face with same CSS values already added: " << familyUIName << " " << styleUIName << " (" << (*it).DisplayName << ", " << displayName << ")" << std::endl; break; } } |