diff options
Diffstat (limited to 'src/os/macosx/string_osx.h')
| -rw-r--r-- | src/os/macosx/string_osx.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/os/macosx/string_osx.h b/src/os/macosx/string_osx.h index ea7904f54..d632b0a44 100644 --- a/src/os/macosx/string_osx.h +++ b/src/os/macosx/string_osx.h @@ -38,7 +38,52 @@ public: static StringIterator *Create(); }; +/** + * Helper class to construct a new #CoreTextParagraphLayout. + */ +class CoreTextParagraphLayoutFactory { +public: + /** Helper for GetLayouter, to get the right type. */ + typedef UniChar CharType; + /** Helper for GetLayouter, to get whether the layouter supports RTL. */ + static const bool SUPPORTS_RTL = true; + + /** + * Get the actual ParagraphLayout for the given buffer. + * @param buff The begin of the buffer. + * @param buff_end The location after the last element in the buffer. + * @param fontMapping THe mapping of the fonts. + * @return The ParagraphLayout instance. + */ + static ParagraphLayouter *GetParagraphLayout(CharType *buff, CharType *buff_end, FontMap &fontMapping); + + /** + * Append a wide character to the internal buffer. + * @param buff The buffer to append to. + * @param buffer_last The end of the buffer. + * @param c The character to add. + * @return The number of buffer spaces that were used. + */ + static size_t AppendToBuffer(CharType *buff, const CharType *buffer_last, WChar c) + { + if (c >= 0x010000U) { + /* Character is encoded using surrogates in UTF-16. */ + if (buff + 1 <= buffer_last) { + buff[0] = (CharType)(((c - 0x010000U) >> 10) + 0xD800); + buff[1] = (CharType)(((c - 0x010000U) & 0x3FF) + 0xDC00); + } else { + /* Not enough space in buffer. */ + *buff = 0; + } + return 2; + } else { + *buff = (CharType)(c & 0xFFFF); + return 1; + } + } +}; +void MacOSResetScriptCache(FontSize size); void MacOSSetCurrentLocaleName(const char *iso_code); int MacOSStringCompare(const char *s1, const char *s2); |