static char *get_fallback(void *priv, const char *family, uint32_t codepoint) { CFStringRef name = CFStringCreateWithBytes( 0, (UInt8 *)family, strlen(family), kCFStringEncodingUTF8, false); CTFontRef font = CTFontCreateWithName(name, 0, NULL); uint32_t codepointle = OSSwapHostToLittleInt32(codepoint); CFStringRef r = CFStringCreateWithBytes( 0, (UInt8*)&codepointle, sizeof(codepointle), kCFStringEncodingUTF32LE, false); CTFontRef fb = CTFontCreateForString(font, r, CFRangeMake(0, 1)); CFStringRef cffamily = CTFontCopyFamilyName(fb); char *res_family = cfstr2buf(cffamily); SAFE_CFRelease(name); SAFE_CFRelease(font); SAFE_CFRelease(r); SAFE_CFRelease(fb); SAFE_CFRelease(cffamily); return res_family; }
static OSStatus local_CoreTR(CGContextRef ctx, CGRect r, CFStringRef string, CFStringRef fontName, CGFloat fontSize, TRFallbackBehavior fallbackBehavior, Boolean render, CGFloat baseline, TRInfo* oInfo) { if (!ctx || !string || !fontName) return paramErr; CGContextSaveGState(ctx); CGContextSetTextMatrix(ctx, CGAffineTransformIdentity); CTFontDescriptorRef fdesc = CTFontDescriptorCreateWithNameAndSize(fontName, fontSize); CTFontRef font = CTFontCreateWithFontDescriptor(fdesc, fontSize, NULL); CFIndex slen = CFStringGetLength(string); CFRange range = CFRangeMake(0L,slen); UniChar* buff = calloc(slen, sizeof(UniChar)); CFStringGetCharacters(string, range, buff); CGGlyph* glyphs = calloc(slen, sizeof(CGGlyph)); Boolean supported = CTFontGetGlyphsForCharacters(font, buff, glyphs, slen); //NSLog(@"%@ supported for '%@'? %d", fontName, string, supported); CFRelease(fdesc); if (!supported) { if (fallbackBehavior == TRLastResortFallbackBehavior) { CFRelease(font); fdesc = CTFontDescriptorCreateWithNameAndSize(CFSTR("LastResort"), fontSize); font = CTFontCreateWithFontDescriptor(fdesc, fontSize, NULL); CFRelease(fdesc); supported = true; } else { CFRange rng = CFRangeMake(0L, CFStringGetLength(string)); CTFontRef font2 = CTFontCreateForString(font, string, rng); CFRelease(font); CFStringRef fontName2 = CTFontCopyName(font2, kCTFontFullNameKey); fdesc = CTFontDescriptorCreateWithNameAndSize(fontName2, fontSize); //NSLog(@"falling back to %@ from %@ : %@", fontName2, fontName, fdesc); CFRelease(fontName2); font = CTFontCreateWithFontDescriptor(fdesc, fontSize, NULL); CFRelease(fdesc); supported = CTFontGetGlyphsForCharacters(font, buff, glyphs, slen); } } free(buff); free(glyphs); CFMutableDictionaryRef attrs = CFDictionaryCreateMutable(kCFAllocatorDefault, 1L, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFDictionarySetValue(attrs, kCTFontAttributeName, font); CFAttributedStringRef attrStr = CFAttributedStringCreate(kCFAllocatorDefault, string, attrs); CFRelease(attrs); CTLineRef line = CTLineCreateWithAttributedString(attrStr); CFRelease(attrStr); CGRect bounds = CTLineGetImageBounds(line, ctx); CGFloat descent = CTFontGetDescent(font); CGFloat ascent = CTFontGetAscent(font); CFRelease(font); if (baseline < 0.0L) baseline = ((r.size.height - bounds.size.height + descent)/2.0L); if (render && (supported || fallbackBehavior != TRNoRenderFallbackBehavior)) { CGFloat x = r.origin.x + (r.size.width/2.0L) - (bounds.size.width/2.0L) - bounds.origin.x; CGFloat y = r.origin.y + baseline; CGPoint where = CGPointMake(x, y); CGContextSetTextPosition(ctx, where.x, where.y); CTLineDraw(line, ctx); } CFRelease(line); if (oInfo) { oInfo->height = bounds.size.height + descent; oInfo->width = bounds.size.width; oInfo->ascent = ascent; oInfo->descent = descent; oInfo->baseline = baseline; oInfo->fontSupported = supported; } CGContextRestoreGState(ctx); return (supported)? noErr:kATSUFontsNotMatched; }