diff options
Diffstat (limited to 'src/fontcache.cpp')
| -rw-r--r-- | src/fontcache.cpp | 227 |
1 files changed, 224 insertions, 3 deletions
diff --git a/src/fontcache.cpp b/src/fontcache.cpp index 2e227c674..7ccdfb931 100644 --- a/src/fontcache.cpp +++ b/src/fontcache.cpp @@ -328,7 +328,7 @@ static int CALLBACK EnumFontCallback(const ENUMLOGFONTEX *logfont, const NEWTEXT return 0; // stop enumerating } -bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid) +bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, const char *str) { EFCParam langInfo; if (GetLocaleInfo(MAKELCID(winlangid, SORT_DEFAULT), LOCALE_FONTSIGNATURE, (LPTSTR)&langInfo.locale, sizeof(langInfo.locale) / sizeof(TCHAR)) == 0) { @@ -350,6 +350,227 @@ bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, i return ret == 0; } +#elif defined(__APPLE__) + +#include "os/macosx/macos.h" +#include <ApplicationServices/ApplicationServices.h> + +FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) +{ + FT_Error err = FT_Err_Cannot_Open_Resource; + + /* Get font reference from name. */ + CFStringRef name = CFStringCreateWithCString(kCFAllocatorDefault, font_name, kCFStringEncodingUTF8); + ATSFontRef font = ATSFontFindFromName(name, kATSOptionFlagsDefault); + CFRelease(name); + if (font == kInvalidFont) return err; + + /* Get a file system reference for the font. */ + FSRef ref; + OSStatus os_err = -1; +#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5) + if (MacOSVersionIsAtLeast(10, 5, 0)) { + os_err = ATSFontGetFileReference(font, &ref); + } else +#endif + { +#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__ + /* This type was introduced with the 10.5 SDK. */ +#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5) + #define ATSFSSpec FSSpec +#endif + FSSpec spec; + os_err = ATSFontGetFileSpecification(font, (ATSFSSpec *)&spec); + if (os_err == noErr) os_err = FSpMakeFSRef(&spec, &ref); +#endif + } + + if (os_err == noErr) { + /* Get unix path for file. */ + UInt8 file_path[PATH_MAX]; + if (FSRefMakePath(&ref, file_path, sizeof(file_path)) == noErr) { + DEBUG(freetype, 3, "Font path for %s: %s", font_name, file_path); + err = FT_New_Face(_library, (const char *)file_path, 0, face); + } + } + + return err; +} + +bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, const char *str) +{ + bool result = false; + +#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5) + if (MacOSVersionIsAtLeast(10, 5, 0)) { + /* Determine fallback font using CoreText. This uses the language isocode + * to find a suitable font. CoreText is available from 10.5 onwards. */ + char lang[16]; + if (strcmp(language_isocode, "zh_TW") == 0) { + /* Traditional Chinese */ + strecpy(lang, "zh-Hant", lastof(lang)); + } else if (strcmp(language_isocode, "zh_CN") == 0) { + /* Simplified Chinese */ + strecpy(lang, "zh-Hans", lastof(lang)); + } else if (strncmp(language_isocode, "ur", 2) == 0) { + /* The urdu alphabet is variant of persian. As OS X has no default + * font that advertises an urdu language code, search for persian + * support instead. */ + strecpy(lang, "fa", lastof(lang)); + } else { + /* Just copy the first part of the isocode. */ + strecpy(lang, language_isocode, lastof(lang)); + char *sep = strchr(lang, '_'); + if (sep != NULL) *sep = '\0'; + } + + CFStringRef lang_code; + lang_code = CFStringCreateWithCString(kCFAllocatorDefault, lang, kCFStringEncodingUTF8); + + /* Create a font iterator and iterate over all fonts that + * are available to the application. */ + ATSFontIterator itr; + ATSFontRef font; + ATSFontIteratorCreate(kATSFontContextLocal, NULL, NULL, kATSOptionFlagsUnRestrictedScope, &itr); + while (!result && ATSFontIteratorNext(itr, &font) == noErr) { + /* Get CoreText font handle. */ + CTFontRef font_ref = CTFontCreateWithPlatformFont(font, 0.0, NULL, NULL); + CFArrayRef langs = CTFontCopySupportedLanguages(font_ref); + if (langs != NULL) { + /* Font has a list of supported languages. */ + for (CFIndex i = 0; i < CFArrayGetCount(langs); i++) { + CFStringRef lang = (CFStringRef)CFArrayGetValueAtIndex(langs, i); + if (CFStringCompare(lang, lang_code, kCFCompareAnchored) == kCFCompareEqualTo) { + /* Lang code is supported by font, get full font name. */ + CFStringRef font_name = CTFontCopyFullName(font_ref); + char name[128]; + CFStringGetCString(font_name, name, lengthof(name), kCFStringEncodingUTF8); + CFRelease(font_name); + /* Skip some inappropriate or ugly looking fonts that have better alternatives. */ + if (strncmp(name, "Courier", 7) == 0 || strncmp(name, "Apple Symbols", 13) == 0 || + strncmp(name, ".Aqua", 5) == 0 || strncmp(name, "LastResort", 10) == 0 || + strncmp(name, "GB18030 Bitmap", 14) == 0) continue; + + /* Save result. */ + strecpy(settings->small_font, name, lastof(settings->small_font)); + strecpy(settings->medium_font, name, lastof(settings->medium_font)); + strecpy(settings->large_font, name, lastof(settings->large_font)); + DEBUG(freetype, 2, "CT-Font for %s: %s", language_isocode, name); + result = true; + break; + } + } + CFRelease(langs); + } + CFRelease(font_ref); + } + ATSFontIteratorRelease(&itr); + CFRelease(lang_code); + } else +#endif + { +#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__ + /* Determine fallback font using ATSUI. This uses a string sample with + * missing characters. This is not failure-proof, but a better way like + * using the isocode as in the CoreText code path is not available. + * ATSUI was deprecated with 10.6 and is only partially available in + * 64-bit mode. */ + + /* Extract a UniChar represenation of the sample string. */ + CFStringRef cf_str = CFStringCreateWithCString(kCFAllocatorDefault, str, kCFStringEncodingUTF8); + if (cf_str == NULL) { + /* Something went wrong. Corrupt/invalid sample string? */ + return false; + } + CFIndex str_len = CFStringGetLength(cf_str); + UniChar string[str_len]; + CFStringGetCharacters(cf_str, CFRangeMake(0, str_len), string); + + /* Create a default text style with the default font. */ + ATSUStyle style; + ATSUCreateStyle(&style); + + /* Create a text layout object from the sample string using the text style. */ + UniCharCount run_len = kATSUToTextEnd; + ATSUTextLayout text_layout; + ATSUCreateTextLayoutWithTextPtr(string, kATSUFromTextBeginning, kATSUToTextEnd, str_len, 1, &run_len, &style, &text_layout); + + /* Try to match a font for the sample text. ATSUMatchFontsToText stops after + * it finds the first continous character run not renderable with the currently + * selected font starting at offset. The matching needs to be repeated until + * the end of the string is reached to make sure the fallback font matches for + * all characters in the string and not only the first run. */ + UniCharArrayOffset offset = kATSUFromTextBeginning; + OSStatus os_err; + do { + ATSUFontID font; + UniCharCount run_len; + os_err = ATSUMatchFontsToText(text_layout, offset, kATSUToTextEnd, &font, &offset, &run_len); + if (os_err == kATSUFontsMatched) { + /* Found a better fallback font. Update the text layout + * object with the new font. */ + ATSUAttributeTag tag = kATSUFontTag; + ByteCount size = sizeof(font); + ATSUAttributeValuePtr val = &font; + ATSUSetAttributes(style, 1, &tag, &size, &val); + offset += run_len; + } + /* Exit if the end of the string is reached or some other error occured. */ + } while (os_err == kATSUFontsMatched && offset < (UniCharArrayOffset)str_len); + + if (os_err == noErr || os_err == kATSUFontsMatched) { + /* ATSUMatchFontsToText exited normally. Extract font + * out of the text layout object. */ + ATSUFontID font; + ByteCount act_len; + ATSUGetAttribute(style, kATSUFontTag, sizeof(font), &font, &act_len); + + /* Get unique font name. The result is not a c-string, we have + * to leave space for a \0 and terminate it ourselves. */ + char name[128]; + ATSUFindFontName(font, kFontUniqueName, kFontNoPlatformCode, kFontNoScriptCode, kFontNoLanguageCode, 127, name, &act_len, NULL); + name[act_len > 127 ? 127 : act_len] = '\0'; + + /* Save Result. */ + strecpy(settings->small_font, name, lastof(settings->small_font)); + strecpy(settings->medium_font, name, lastof(settings->medium_font)); + strecpy(settings->large_font, name, lastof(settings->large_font)); + DEBUG(freetype, 2, "ATSUI-Font for %s: %s", language_isocode, name); + result = true; + } + + ATSUDisposeTextLayout(text_layout); + ATSUDisposeStyle(style); + CFRelease(cf_str); +#endif + } + + if (result && strncmp(settings->medium_font, "Geeza Pro", 9) == 0) { + /* The font 'Geeza Pro' is often found for arabic characters, but + * it has the 'tiny' problem of not having any latin characters. + * 'Arial Unicode MS' on the other hand has arabic and latin glyphs, + * but seems to 'forget' to inform the OS about this fact. Manually + * substitute the latter for the former if it is loadable. */ + bool ft_init = _library != NULL; + FT_Face face; + /* Init FreeType if needed. */ + if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName("Arial Unicode MS", &face) == FT_Err_Ok) { + FT_Done_Face(face); + strecpy(settings->small_font, "Arial Unicode MS", lastof(settings->small_font)); + strecpy(settings->medium_font, "Arial Unicode MS", lastof(settings->medium_font)); + strecpy(settings->large_font, "Arial Unicode MS", lastof(settings->large_font)); + DEBUG(freetype, 1, "Replacing font 'Geeza Pro' with 'Arial Unicode MS'"); + } + if (!ft_init) { + /* Uninit FreeType if we did the init. */ + FT_Done_FreeType(_library); + _library = NULL; + } + } + + return result; +} + #elif defined(WITH_FONTCONFIG) static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) { @@ -417,7 +638,7 @@ static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) return err; } -bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid) +bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, const char *str) { if (!FcInit()) return false; @@ -483,7 +704,7 @@ error_pattern: #else /* without WITH_FONTCONFIG */ FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) {return FT_Err_Cannot_Open_Resource;} -bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid) { return false; } +bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, const char *str) { return false; } #endif /* WITH_FONTCONFIG */ /** |