typedef const struct CF_BRIDGED_TYPE(UIFontDescriptor) __CTFontDescriptor * CTFontDescriptorRef;

typedef const struct CF_BRIDGED_TYPE(NSFontDescriptor) __CTFontDescriptor * CTFontDescriptorRef;

CFTypeID CTFontDescriptorGetTypeID( void ) CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontURLAttribute CT_AVAILABLE(10_6, 3_2);

CT_EXPORT const CFStringRef kCTFontNameAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontDisplayNameAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontFamilyNameAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontStyleNameAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontTraitsAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontVariationAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontSizeAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontMatrixAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontCascadeListAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontCharacterSetAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontLanguagesAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontBaselineAdjustAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontMacintoshEncodingsAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontFeaturesAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontFeatureSettingsAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontFixedAdvanceAttribute CT_AVAILABLE(10_5, 3_2);

CT_EXPORT const CFStringRef kCTFontOrientationAttribute CT_AVAILABLE(10_5, 3_2);

typedef CF_ENUM(uint32_t, CTFontOrientation) {
    kCTFontOrientationDefault    CT_ENUM_AVAILABLE(10_8, 6_0) = 0,
    kCTFontOrientationHorizontal CT_ENUM_AVAILABLE(10_8, 6_0) = 1,
    kCTFontOrientationVertical   CT_ENUM_AVAILABLE(10_8, 6_0) = 2,

    kCTFontDefaultOrientation CT_ENUM_DEPRECATED(10_5, 10_11, 3_2, 9_0) = kCTFontOrientationDefault,
    kCTFontHorizontalOrientation CT_ENUM_DEPRECATED(10_5, 10_11, 3_2, 9_0) = kCTFontOrientationHorizontal,
    kCTFontVerticalOrientation CT_ENUM_DEPRECATED(10_5, 10_11, 3_2, 9_0) = kCTFontOrientationVertical
};

CT_EXPORT const CFStringRef kCTFontFormatAttribute CT_AVAILABLE(10_6, 3_2);

typedef CF_ENUM(uint32_t, CTFontFormat) {
    kCTFontFormatUnrecognized       = 0,
    kCTFontFormatOpenTypePostScript = 1,
    kCTFontFormatOpenTypeTrueType   = 2,
    kCTFontFormatTrueType           = 3,
    kCTFontFormatPostScript         = 4,
    kCTFontFormatBitmap             = 5
};

CT_EXPORT const CFStringRef kCTFontRegistrationScopeAttribute CT_AVAILABLE(10_6, 3_2);

CT_EXPORT const CFStringRef kCTFontPriorityAttribute CT_AVAILABLE(10_6, 3_2);

enum {
    kCTFontPrioritySystem       =  10000,
    kCTFontPriorityNetwork      =  20000,
    kCTFontPriorityComputer     =  30000,
    kCTFontPriorityUser         =  40000,
    kCTFontPriorityDynamic      =  50000,
    kCTFontPriorityProcess      =  60000
};
typedef uint32_t CTFontPriority;

CT_EXPORT const CFStringRef kCTFontEnabledAttribute CT_AVAILABLE(10_6, 3_2);

CT_EXPORT const CFStringRef kCTFontDownloadableAttribute CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDownloadedAttribute CT_AVAILABLE(10_12, 7_0);

CTFontDescriptorRef CTFontDescriptorCreateWithNameAndSize(
    CFStringRef         name,
    CGFloat             size ) CT_AVAILABLE(10_5, 3_2);

CTFontDescriptorRef CTFontDescriptorCreateWithAttributes(
    CFDictionaryRef     attributes ) CT_AVAILABLE(10_5, 3_2);

CTFontDescriptorRef CTFontDescriptorCreateCopyWithAttributes(
    CTFontDescriptorRef     original,
    CFDictionaryRef         attributes ) CT_AVAILABLE(10_5, 3_2);

CTFontDescriptorRef __nullable CTFontDescriptorCreateCopyWithFamily(
    CTFontDescriptorRef     original,
    CFStringRef             family ) CT_AVAILABLE(10_9, 7_0);

CTFontDescriptorRef __nullable CTFontDescriptorCreateCopyWithSymbolicTraits(
    CTFontDescriptorRef     original,
    CTFontSymbolicTraits    symTraitValue,
    CTFontSymbolicTraits    symTraitMask ) CT_AVAILABLE(10_9, 7_0);

CTFontDescriptorRef CTFontDescriptorCreateCopyWithVariation(
    CTFontDescriptorRef     original,
    CFNumberRef             variationIdentifier,
    CGFloat                 variationValue ) CT_AVAILABLE(10_5, 3_2);

CTFontDescriptorRef CTFontDescriptorCreateCopyWithFeature(
    CTFontDescriptorRef     original,
    CFNumberRef             featureTypeIdentifier,
    CFNumberRef             featureSelectorIdentifier ) CT_AVAILABLE(10_5, 3_2);

CFArrayRef __nullable CTFontDescriptorCreateMatchingFontDescriptors(
    CTFontDescriptorRef     descriptor,
    CFSetRef __nullable     mandatoryAttributes ) CT_AVAILABLE(10_5, 3_2);

CTFontDescriptorRef __nullable CTFontDescriptorCreateMatchingFontDescriptor(
    CTFontDescriptorRef     descriptor,
    CFSetRef __nullable     mandatoryAttributes ) CT_AVAILABLE(10_5, 3_2);

typedef CF_ENUM(uint32_t, CTFontDescriptorMatchingState) {
    kCTFontDescriptorMatchingDidBegin,              // called once at the beginning.
    kCTFontDescriptorMatchingDidFinish,             // called once at the end.
    
    kCTFontDescriptorMatchingWillBeginQuerying,     // called once before talking to the server.  Skipped if not necessary.
    kCTFontDescriptorMatchingStalled,               // called when stalled. (e.g. while waiting for server response.)
    
    // Downloading and activating are repeated for each descriptor.
    kCTFontDescriptorMatchingWillBeginDownloading,  // Downloading part may be skipped if all the assets are already downloaded
    kCTFontDescriptorMatchingDownloading,
    kCTFontDescriptorMatchingDidFinishDownloading,
    kCTFontDescriptorMatchingDidMatch,              // called when font descriptor is matched.
    
    kCTFontDescriptorMatchingDidFailWithError       // called when an error occurred.  (may be called multiple times.)
};

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingSourceDescriptor CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingDescriptors CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingResult CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingPercentage CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingCurrentAssetSize CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingTotalDownloadedSize CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingTotalAssetSize CT_AVAILABLE(10_8, 6_0);

CT_EXPORT const CFStringRef kCTFontDescriptorMatchingError CT_AVAILABLE(10_8, 6_0);

typedef bool (^CTFontDescriptorProgressHandler)(CTFontDescriptorMatchingState state, CFDictionaryRef progressParameter);

bool CTFontDescriptorMatchFontDescriptorsWithProgressHandler(
    CFArrayRef                          descriptors,
    CFSetRef __nullable                 mandatoryAttributes,
    CTFontDescriptorProgressHandler     progressBlock) CT_AVAILABLE(10_9, 6_0)

CFDictionaryRef CTFontDescriptorCopyAttributes(
    CTFontDescriptorRef     descriptor ) CT_AVAILABLE(10_5, 3_2);

CFTypeRef __nullable CTFontDescriptorCopyAttribute(
    CTFontDescriptorRef     descriptor,
    CFStringRef             attribute ) CT_AVAILABLE(10_5, 3_2);

CFTypeRef __nullable CTFontDescriptorCopyLocalizedAttribute(
    CTFontDescriptorRef     descriptor,
    CFStringRef             attribute,
    CFStringRef __nullable * __nullable language ) CT_AVAILABLE(10_5, 3_2);