Font::CodePath Font::codePath(const TextRun& run) const
{
if (s_codePath != Auto)
return s_codePath;
#if ENABLE(SVG_FONTS)
if (run.renderingContext())
return Simple;
#endif
#if PLATFORM(QT) && !HAVE(QRAWFONT)
if (run.expansion() || run.rtl() || isSmallCaps() || wordSpacing() || letterSpacing())
return Complex;
#endif
if (m_fontDescription.featureSettings() && m_fontDescription.featureSettings()->size() > 0)
return Complex;
CodePath result = Simple;
// Start from 0 since drawing and highlighting also measure the characters before run->from
// FIXME: Should use a UnicodeSet in ports where ICU is used. Note that we
// can't simply use UnicodeCharacter Property/class because some characters
// are not 'combining', but still need to go to the complex path.
// Alternatively, we may as well consider binary search over a sorted
// list of ranges.
for (int i = 0; i < run.length(); i++) {
const UChar c = run[i];
if (c < 0x2E5) // U+02E5 through U+02E9 (Modifier Letters : Tone letters)
continue;
if (c <= 0x2E9)
return Complex;
if (c < 0x300) // U+0300 through U+036F Combining diacritical marks
continue;
if (c <= 0x36F)
return Complex;
if (c < 0x0591 || c == 0x05BE) // U+0591 through U+05CF excluding U+05BE Hebrew combining marks, Hebrew punctuation Paseq, Sof Pasuq and Nun Hafukha
continue;
if (c <= 0x05CF)
return Complex;
// U+0600 through U+109F Arabic, Syriac, Thaana, NKo, Samaritan, Mandaic,
// Devanagari, Bengali, Gurmukhi, Gujarati, Oriya, Tamil, Telugu, Kannada,
// Malayalam, Sinhala, Thai, Lao, Tibetan, Myanmar
if (c < 0x0600)
continue;
if (c <= 0x109F)
return Complex;
// U+1100 through U+11FF Hangul Jamo (only Ancient Korean should be left here if you precompose;
// Modern Korean will be precomposed as a result of step A)
if (c < 0x1100)
continue;
if (c <= 0x11FF)
return Complex;
if (c < 0x135D) // U+135D through U+135F Ethiopic combining marks
continue;
if (c <= 0x135F)
return Complex;
if (c < 0x1700) // U+1780 through U+18AF Tagalog, Hanunoo, Buhid, Taghanwa,Khmer, Mongolian
continue;
if (c <= 0x18AF)
return Complex;
if (c < 0x1900) // U+1900 through U+194F Limbu (Unicode 4.0)
continue;
if (c <= 0x194F)
return Complex;
if (c < 0x1980) // U+1980 through U+19DF New Tai Lue
continue;
if (c <= 0x19DF)
return Complex;
if (c < 0x1A00) // U+1A00 through U+1CFF Buginese, Tai Tham, Balinese, Batak, Lepcha, Vedic
continue;
if (c <= 0x1CFF)
return Complex;
if (c < 0x1DC0) // U+1DC0 through U+1DFF Comining diacritical mark supplement
continue;
if (c <= 0x1DFF)
return Complex;
// U+1E00 through U+2000 characters with diacritics and stacked diacritics
if (c <= 0x2000) {
result = SimpleWithGlyphOverflow;
continue;
}
if (c < 0x20D0) // U+20D0 through U+20FF Combining marks for symbols
continue;
if (c <= 0x20FF)
return Complex;
if (c < 0x2CEF) // U+2CEF through U+2CF1 Combining marks for Coptic
continue;
if (c <= 0x2CF1)
return Complex;
if (c < 0x302A) // U+302A through U+302F Ideographic and Hangul Tone marks
continue;
if (c <= 0x302F)
return Complex;
if (c < 0xA67C) // U+A67C through U+A67D Combining marks for old Cyrillic
continue;
if (c <= 0xA67D)
return Complex;
if (c < 0xA6F0) // U+A6F0 through U+A6F1 Combining mark for Bamum
continue;
if (c <= 0xA6F1)
return Complex;
// U+A800 through U+ABFF Nagri, Phags-pa, Saurashtra, Devanagari Extended,
// Hangul Jamo Ext. A, Javanese, Myanmar Extended A, Tai Viet, Meetei Mayek,
if (c < 0xA800)
continue;
if (c <= 0xABFF)
return Complex;
if (c < 0xD7B0) // U+D7B0 through U+D7FF Hangul Jamo Ext. B
continue;
if (c <= 0xD7FF)
return Complex;
if (c <= 0xDBFF) {
// High surrogate
if (i == run.length() - 1)
continue;
UChar next = run[++i];
if (!U16_IS_TRAIL(next))
continue;
UChar32 supplementaryCharacter = U16_GET_SUPPLEMENTARY(c, next);
if (supplementaryCharacter < 0x1F1E6) // U+1F1E6 through U+1F1FF Regional Indicator Symbols
continue;
if (supplementaryCharacter <= 0x1F1FF)
return Complex;
if (supplementaryCharacter < 0xE0100) // U+E0100 through U+E01EF Unicode variation selectors.
continue;
if (supplementaryCharacter <= 0xE01EF)
return Complex;
// FIXME: Check for Brahmi (U+11000 block), Kaithi (U+11080 block) and other complex scripts
// in plane 1 or higher.
continue;
}
if (c < 0xFE00) // U+FE00 through U+FE0F Unicode variation selectors
continue;
if (c <= 0xFE0F)
return Complex;
if (c < 0xFE20) // U+FE20 through U+FE2F Combining half marks
continue;
if (c <= 0xFE2F)
return Complex;
}
if (run.length() > 1 && typesettingFeatures())
return Complex;
return result;
}
Font::CodePath Font::codePath(const TextRun& run) const
{
if (s_codePath != Auto)
return s_codePath;
#if PLATFORM(QT)
if (run.expansion() || run.rtl() || isSmallCaps() || wordSpacing() || letterSpacing())
return Complex;
#endif
CodePath result = Simple;
// Start from 0 since drawing and highlighting also measure the characters before run->from
for (int i = 0; i < run.length(); i++) {
const UChar c = run[i];
if (c < 0x300) // U+0300 through U+036F Combining diacritical marks
continue;
if (c <= 0x36F)
return Complex;
if (c < 0x0591 || c == 0x05BE) // U+0591 through U+05CF excluding U+05BE Hebrew combining marks, Hebrew punctuation Paseq, Sof Pasuq and Nun Hafukha
continue;
if (c <= 0x05CF)
return Complex;
if (c < 0x0600) // U+0600 through U+1059 Arabic, Syriac, Thaana, Devanagari, Bengali, Gurmukhi, Gujarati, Oriya, Tamil, Telugu, Kannada, Malayalam, Sinhala, Thai, Lao, Tibetan, Myanmar
continue;
if (c <= 0x1059)
return Complex;
if (c < 0x1100) // U+1100 through U+11FF Hangul Jamo (only Ancient Korean should be left here if you precompose; Modern Korean will be precomposed as a result of step A)
continue;
if (c <= 0x11FF)
return Complex;
if (c < 0x1780) // U+1780 through U+18AF Khmer, Mongolian
continue;
if (c <= 0x18AF)
return Complex;
if (c < 0x1900) // U+1900 through U+194F Limbu (Unicode 4.0)
continue;
if (c <= 0x194F)
return Complex;
if (c < 0x1E00) // U+1E00 through U+2000 characters with diacritics and stacked diacritics
continue;
if (c <= 0x2000) {
result = SimpleWithGlyphOverflow;
continue;
}
if (c < 0x20D0) // U+20D0 through U+20FF Combining marks for symbols
continue;
if (c <= 0x20FF)
return Complex;
if (c < 0xFE20) // U+FE20 through U+FE2F Combining half marks
continue;
if (c <= 0xFE2F)
return Complex;
}
#if ENABLE(SAMSUNG_WEBKIT_PERFORMANCE_PATCH)
// SAMSUNG CHANGE : Webkit Performance Patch Merge + r94303
if (run.length() > 1 && typesettingFeatures())
#else
if (typesettingFeatures())
// SAMSUNG CHANGE : Webkit Performance Patch Merge -
#endif
return Complex;
return result;
}