blob: 43edf326bb61f2071c5a5651ae83196cc92e80d3 [file] [log] [blame]
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkTypes.h"
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
#ifdef SK_BUILD_FOR_MAC
#import <ApplicationServices/ApplicationServices.h>
#endif
#ifdef SK_BUILD_FOR_IOS
#include <CoreText/CoreText.h>
#include <CoreText/CTFontManager.h>
#include <CoreGraphics/CoreGraphics.h>
#include <CoreFoundation/CoreFoundation.h>
#include <dlfcn.h>
#endif
#include "include/core/SkData.h"
#include "include/core/SkFontArguments.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontStyle.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/ports/SkFontMgr_mac_ct.h"
#include "include/private/SkFixed.h"
#include "include/private/SkOnce.h"
#include "include/private/SkTPin.h"
#include "include/private/SkTemplates.h"
#include "include/private/SkTo.h"
#include "src/core/SkFontDescriptor.h"
#include "src/ports/SkTypeface_mac_ct.h"
#include "src/utils/SkUTF.h"
#include <string.h>
#include <memory>
#if (defined(SK_BUILD_FOR_IOS) && defined(__IPHONE_14_0) && \
__IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_14_0) || \
(defined(SK_BUILD_FOR_MAC) && defined(__MAC_11_0) && \
__MAC_OS_VERSION_MIN_REQUIRED >= __MAC_11_0)
static uint32_t SkGetCoreTextVersion() {
// If compiling for iOS 14.0+ or macOS 11.0+, the CoreText version number
// must be derived from the OS version number.
static const uint32_t kCoreTextVersionNEWER = 0x000D0000;
return kCoreTextVersionNEWER;
}
#else
static uint32_t SkGetCoreTextVersion() {
// Check for CoreText availability before calling CTGetCoreTextVersion().
static const bool kCoreTextIsAvailable = (&CTGetCoreTextVersion != nullptr);
if (kCoreTextIsAvailable) {
return CTGetCoreTextVersion();
}
// Default to a value that's smaller than any known CoreText version.
static const uint32_t kCoreTextVersionUNKNOWN = 0;
return kCoreTextVersionUNKNOWN;
}
#endif
static SkUniqueCFRef<CFStringRef> make_CFString(const char s[]) {
return SkUniqueCFRef<CFStringRef>(CFStringCreateWithCString(nullptr, s, kCFStringEncodingUTF8));
}
/** Creates a typeface from a descriptor, searching the cache. */
static sk_sp<SkTypeface> create_from_desc(CTFontDescriptorRef desc) {
SkUniqueCFRef<CTFontRef> ctFont(CTFontCreateWithFontDescriptor(desc, 0, nullptr));
if (!ctFont) {
return nullptr;
}
return SkTypeface_Mac::Make(std::move(ctFont), OpszVariation(), nullptr);
}
static SkUniqueCFRef<CTFontDescriptorRef> create_descriptor(const char familyName[],
const SkFontStyle& style) {
SkUniqueCFRef<CFMutableDictionaryRef> cfAttributes(
CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks));
SkUniqueCFRef<CFMutableDictionaryRef> cfTraits(
CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks));
if (!cfAttributes || !cfTraits) {
return nullptr;
}
// TODO(crbug.com/1018581) Some CoreText versions have errant behavior when
// certain traits set. Temporary workaround to omit specifying trait for those
// versions.
// Long term solution will involve serializing typefaces instead of relying upon
// this to match between processes.
//
// Compare CoreText.h in an up to date SDK for where these values come from.
static const uint32_t kSkiaLocalCTVersionNumber10_14 = 0x000B0000;
static const uint32_t kSkiaLocalCTVersionNumber10_15 = 0x000C0000;
// CTFontTraits (symbolic)
// macOS 14 and iOS 12 seem to behave badly when kCTFontSymbolicTrait is set.
// macOS 15 yields LastResort font instead of a good default font when
// kCTFontSymbolicTrait is set.
if (SkGetCoreTextVersion() < kSkiaLocalCTVersionNumber10_14) {
CTFontSymbolicTraits ctFontTraits = 0;
if (style.weight() >= SkFontStyle::kBold_Weight) {
ctFontTraits |= kCTFontBoldTrait;
}
if (style.slant() != SkFontStyle::kUpright_Slant) {
ctFontTraits |= kCTFontItalicTrait;
}
SkUniqueCFRef<CFNumberRef> cfFontTraits(
CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &ctFontTraits));
if (cfFontTraits) {
CFDictionaryAddValue(cfTraits.get(), kCTFontSymbolicTrait, cfFontTraits.get());
}
}
// CTFontTraits (weight)
CGFloat ctWeight = SkCTFontCTWeightForCSSWeight(style.weight());
SkUniqueCFRef<CFNumberRef> cfFontWeight(
CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctWeight));
if (cfFontWeight) {
CFDictionaryAddValue(cfTraits.get(), kCTFontWeightTrait, cfFontWeight.get());
}
// CTFontTraits (width)
CGFloat ctWidth = SkCTFontCTWidthForCSSWidth(style.width());
SkUniqueCFRef<CFNumberRef> cfFontWidth(
CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctWidth));
if (cfFontWidth) {
CFDictionaryAddValue(cfTraits.get(), kCTFontWidthTrait, cfFontWidth.get());
}
// CTFontTraits (slant)
// macOS 15 behaves badly when kCTFontSlantTrait is set.
if (SkGetCoreTextVersion() != kSkiaLocalCTVersionNumber10_15) {
CGFloat ctSlant = style.slant() == SkFontStyle::kUpright_Slant ? 0 : 1;
SkUniqueCFRef<CFNumberRef> cfFontSlant(
CFNumberCreate(kCFAllocatorDefault, kCFNumberCGFloatType, &ctSlant));
if (cfFontSlant) {
CFDictionaryAddValue(cfTraits.get(), kCTFontSlantTrait, cfFontSlant.get());
}
}
// CTFontTraits
CFDictionaryAddValue(cfAttributes.get(), kCTFontTraitsAttribute, cfTraits.get());
// CTFontFamilyName
if (familyName) {
SkUniqueCFRef<CFStringRef> cfFontName = make_CFString(familyName);
if (cfFontName) {
CFDictionaryAddValue(cfAttributes.get(), kCTFontFamilyNameAttribute, cfFontName.get());
}
}
return SkUniqueCFRef<CTFontDescriptorRef>(
CTFontDescriptorCreateWithAttributes(cfAttributes.get()));
}
// Same as the above function except style is included so we can
// compare whether the created font conforms to the style. If not, we need
// to recreate the font with symbolic traits. This is needed due to MacOS 10.11
// font creation problem https://bugs.chromium.org/p/skia/issues/detail?id=8447.
static sk_sp<SkTypeface> create_from_desc_and_style(CTFontDescriptorRef desc,
const SkFontStyle& style) {
SkUniqueCFRef<CTFontRef> ctFont(CTFontCreateWithFontDescriptor(desc, 0, nullptr));
if (!ctFont) {
return nullptr;
}
const CTFontSymbolicTraits traits = CTFontGetSymbolicTraits(ctFont.get());
CTFontSymbolicTraits expected_traits = traits;
if (style.slant() != SkFontStyle::kUpright_Slant) {
expected_traits |= kCTFontItalicTrait;
}
if (style.weight() >= SkFontStyle::kBold_Weight) {
expected_traits |= kCTFontBoldTrait;
}
if (expected_traits != traits) {
SkUniqueCFRef<CTFontRef> ctNewFont(CTFontCreateCopyWithSymbolicTraits(
ctFont.get(), 0, nullptr, expected_traits, expected_traits));
if (ctNewFont) {
ctFont = std::move(ctNewFont);
}
}
return SkTypeface_Mac::Make(std::move(ctFont), OpszVariation(), nullptr);
}
/** Creates a typeface from a name, searching the cache. */
static sk_sp<SkTypeface> create_from_name(const char familyName[], const SkFontStyle& style) {
SkUniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style);
if (!desc) {
return nullptr;
}
return create_from_desc_and_style(desc.get(), style);
}
static const char* map_css_names(const char* name) {
static const struct {
const char* fFrom; // name the caller specified
const char* fTo; // "canonical" name we map to
} gPairs[] = {
{ "sans-serif", "Helvetica" },
{ "serif", "Times" },
{ "monospace", "Courier" }
};
for (size_t i = 0; i < std::size(gPairs); i++) {
if (strcmp(name, gPairs[i].fFrom) == 0) {
return gPairs[i].fTo;
}
}
return name; // no change
}
namespace {
static sk_sp<SkData> skdata_from_skstreamasset(std::unique_ptr<SkStreamAsset> stream) {
size_t size = stream->getLength();
if (const void* base = stream->getMemoryBase()) {
return SkData::MakeWithProc(base, size,
[](const void*, void* ctx) -> void {
delete (SkStreamAsset*)ctx;
}, stream.release());
}
return SkData::MakeFromStream(stream.get(), size);
}
static SkUniqueCFRef<CFDataRef> cfdata_from_skdata(sk_sp<SkData> data) {
void const * const addr = data->data();
size_t const size = data->size();
CFAllocatorContext ctx = {
0, // CFIndex version
data.release(), // void* info
nullptr, // const void *(*retain)(const void *info);
nullptr, // void (*release)(const void *info);
nullptr, // CFStringRef (*copyDescription)(const void *info);
nullptr, // void * (*allocate)(CFIndex size, CFOptionFlags hint, void *info);
nullptr, // void*(*reallocate)(void* ptr,CFIndex newsize,CFOptionFlags hint,void* info);
[](void*,void* info) -> void { // void (*deallocate)(void *ptr, void *info);
SkASSERT(info);
((SkData*)info)->unref();
},
nullptr, // CFIndex (*preferredSize)(CFIndex size, CFOptionFlags hint, void *info);
};
SkUniqueCFRef<CFAllocatorRef> alloc(CFAllocatorCreate(kCFAllocatorDefault, &ctx));
return SkUniqueCFRef<CFDataRef>(CFDataCreateWithBytesNoCopy(
kCFAllocatorDefault, (const UInt8 *)addr, size, alloc.get()));
}
static SkUniqueCFRef<CTFontRef> ctfont_from_skdata(sk_sp<SkData> data, int ttcIndex) {
// TODO: Use CTFontManagerCreateFontDescriptorsFromData when available.
if (ttcIndex != 0) {
return nullptr;
}
SkUniqueCFRef<CFDataRef> cfData(cfdata_from_skdata(std::move(data)));
SkUniqueCFRef<CTFontDescriptorRef> desc(
CTFontManagerCreateFontDescriptorFromData(cfData.get()));
if (!desc) {
return nullptr;
}
return SkUniqueCFRef<CTFontRef>(CTFontCreateWithFontDescriptor(desc.get(), 0, nullptr));
}
static bool find_desc_str(CTFontDescriptorRef desc, CFStringRef name, SkString* value) {
SkUniqueCFRef<CFStringRef> ref((CFStringRef)CTFontDescriptorCopyAttribute(desc, name));
if (!ref) {
return false;
}
SkStringFromCFString(ref.get(), value);
return true;
}
static inline int sqr(int value) {
SkASSERT(SkAbs32(value) < 0x7FFF); // check for overflow
return value * value;
}
// We normalize each axis (weight, width, italic) to be base-900
static int compute_metric(const SkFontStyle& a, const SkFontStyle& b) {
return sqr(a.weight() - b.weight()) +
sqr((a.width() - b.width()) * 100) +
sqr((a.slant() != b.slant()) * 900);
}
class SkFontStyleSet_Mac : public SkFontStyleSet {
public:
SkFontStyleSet_Mac(CTFontDescriptorRef desc)
: fArray(CTFontDescriptorCreateMatchingFontDescriptors(desc, nullptr))
, fCount(0)
{
if (!fArray) {
fArray.reset(CFArrayCreate(nullptr, nullptr, 0, nullptr));
}
fCount = SkToInt(CFArrayGetCount(fArray.get()));
}
int count() override {
return fCount;
}
void getStyle(int index, SkFontStyle* style, SkString* name) override {
SkASSERT((unsigned)index < (unsigned)fCount);
CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), index);
if (style) {
*style = SkCTFontDescriptorGetSkFontStyle(desc, false);
}
if (name) {
if (!find_desc_str(desc, kCTFontStyleNameAttribute, name)) {
name->reset();
}
}
}
SkTypeface* createTypeface(int index) override {
SkASSERT((unsigned)index < (unsigned)CFArrayGetCount(fArray.get()));
CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), index);
return create_from_desc(desc).release();
}
SkTypeface* matchStyle(const SkFontStyle& pattern) override {
if (0 == fCount) {
return nullptr;
}
return create_from_desc(findMatchingDesc(pattern)).release();
}
private:
SkUniqueCFRef<CFArrayRef> fArray;
int fCount;
CTFontDescriptorRef findMatchingDesc(const SkFontStyle& pattern) const {
int bestMetric = SK_MaxS32;
CTFontDescriptorRef bestDesc = nullptr;
for (int i = 0; i < fCount; ++i) {
CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray.get(), i);
int metric = compute_metric(pattern, SkCTFontDescriptorGetSkFontStyle(desc, false));
if (0 == metric) {
return desc;
}
if (metric < bestMetric) {
bestMetric = metric;
bestDesc = desc;
}
}
SkASSERT(bestDesc);
return bestDesc;
}
};
SkUniqueCFRef<CFArrayRef> SkCopyAvailableFontFamilyNames(CTFontCollectionRef collection) {
// Create a CFArray of all available font descriptors.
SkUniqueCFRef<CFArrayRef> descriptors(
CTFontCollectionCreateMatchingFontDescriptors(collection));
// Copy the font family names of the font descriptors into a CFSet.
auto addDescriptorFamilyNameToSet = [](const void* value, void* context) -> void {
CTFontDescriptorRef descriptor = static_cast<CTFontDescriptorRef>(value);
CFMutableSetRef familyNameSet = static_cast<CFMutableSetRef>(context);
SkUniqueCFRef<CFTypeRef> familyName(
CTFontDescriptorCopyAttribute(descriptor, kCTFontFamilyNameAttribute));
if (familyName) {
CFSetAddValue(familyNameSet, familyName.get());
}
};
SkUniqueCFRef<CFMutableSetRef> familyNameSet(
CFSetCreateMutable(kCFAllocatorDefault, 0, &kCFTypeSetCallBacks));
CFArrayApplyFunction(descriptors.get(), CFRangeMake(0, CFArrayGetCount(descriptors.get())),
addDescriptorFamilyNameToSet, familyNameSet.get());
// Get the set of family names into an array; this does not retain.
CFIndex count = CFSetGetCount(familyNameSet.get());
std::unique_ptr<const void*[]> familyNames(new const void*[count]);
CFSetGetValues(familyNameSet.get(), familyNames.get());
// Sort the array of family names (to match CTFontManagerCopyAvailableFontFamilyNames).
std::sort(familyNames.get(), familyNames.get() + count, [](const void* a, const void* b){
return CFStringCompare((CFStringRef)a, (CFStringRef)b, 0) == kCFCompareLessThan;
});
// Copy family names into a CFArray; this does retain.
return SkUniqueCFRef<CFArrayRef>(
CFArrayCreate(kCFAllocatorDefault, familyNames.get(), count, &kCFTypeArrayCallBacks));
}
/** Use CTFontManagerCopyAvailableFontFamilyNames if available, simulate if not. */
SkUniqueCFRef<CFArrayRef> SkCTFontManagerCopyAvailableFontFamilyNames() {
#ifdef SK_BUILD_FOR_IOS
using CTFontManagerCopyAvailableFontFamilyNamesProc = CFArrayRef (*)(void);
CTFontManagerCopyAvailableFontFamilyNamesProc ctFontManagerCopyAvailableFontFamilyNames;
*(void**)(&ctFontManagerCopyAvailableFontFamilyNames) =
dlsym(RTLD_DEFAULT, "CTFontManagerCopyAvailableFontFamilyNames");
if (ctFontManagerCopyAvailableFontFamilyNames) {
return SkUniqueCFRef<CFArrayRef>(ctFontManagerCopyAvailableFontFamilyNames());
}
SkUniqueCFRef<CTFontCollectionRef> collection(
CTFontCollectionCreateFromAvailableFonts(nullptr));
return SkUniqueCFRef<CFArrayRef>(SkCopyAvailableFontFamilyNames(collection.get()));
#else
return SkUniqueCFRef<CFArrayRef>(CTFontManagerCopyAvailableFontFamilyNames());
#endif
}
} // namespace
class SkFontMgr_Mac : public SkFontMgr {
SkUniqueCFRef<CFArrayRef> fNames;
int fCount;
CFStringRef getFamilyNameAt(int index) const {
SkASSERT((unsigned)index < (unsigned)fCount);
return (CFStringRef)CFArrayGetValueAtIndex(fNames.get(), index);
}
static SkFontStyleSet* CreateSet(CFStringRef cfFamilyName) {
SkUniqueCFRef<CFMutableDictionaryRef> cfAttr(
CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks));
CFDictionaryAddValue(cfAttr.get(), kCTFontFamilyNameAttribute, cfFamilyName);
SkUniqueCFRef<CTFontDescriptorRef> desc(
CTFontDescriptorCreateWithAttributes(cfAttr.get()));
return new SkFontStyleSet_Mac(desc.get());
}
public:
SkUniqueCFRef<CTFontCollectionRef> fFontCollection;
SkFontMgr_Mac(CTFontCollectionRef fontCollection)
: fNames(fontCollection ? SkCopyAvailableFontFamilyNames(fontCollection)
: SkCTFontManagerCopyAvailableFontFamilyNames())
, fCount(fNames ? SkToInt(CFArrayGetCount(fNames.get())) : 0)
, fFontCollection(fontCollection ? (CTFontCollectionRef)CFRetain(fontCollection)
: CTFontCollectionCreateFromAvailableFonts(nullptr))
{}
protected:
int onCountFamilies() const override {
return fCount;
}
void onGetFamilyName(int index, SkString* familyName) const override {
if ((unsigned)index < (unsigned)fCount) {
SkStringFromCFString(this->getFamilyNameAt(index), familyName);
} else {
familyName->reset();
}
}
SkFontStyleSet* onCreateStyleSet(int index) const override {
if ((unsigned)index >= (unsigned)fCount) {
return nullptr;
}
return CreateSet(this->getFamilyNameAt(index));
}
SkFontStyleSet* onMatchFamily(const char familyName[]) const override {
if (!familyName) {
return nullptr;
}
SkUniqueCFRef<CFStringRef> cfName = make_CFString(familyName);
return CreateSet(cfName.get());
}
SkTypeface* onMatchFamilyStyle(const char familyName[],
const SkFontStyle& style) const override {
SkUniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style);
return create_from_desc(desc.get()).release();
}
SkTypeface* onMatchFamilyStyleCharacter(const char familyName[],
const SkFontStyle& style,
const char* bcp47[], int bcp47Count,
SkUnichar character) const override {
SkUniqueCFRef<CTFontDescriptorRef> desc = create_descriptor(familyName, style);
SkUniqueCFRef<CTFontRef> familyFont(CTFontCreateWithFontDescriptor(desc.get(), 0, nullptr));
// kCFStringEncodingUTF32 is BE unless there is a BOM.
// Since there is no machine endian option, explicitly state machine endian.
#ifdef SK_CPU_LENDIAN
constexpr CFStringEncoding encoding = kCFStringEncodingUTF32LE;
#else
constexpr CFStringEncoding encoding = kCFStringEncodingUTF32BE;
#endif
SkUniqueCFRef<CFStringRef> string(CFStringCreateWithBytes(
kCFAllocatorDefault, reinterpret_cast<const UInt8 *>(&character), sizeof(character),
encoding, false));
// If 0xD800 <= codepoint <= 0xDFFF || 0x10FFFF < codepoint 'string' may be nullptr.
// No font should be covering such codepoints (even the magic fallback font).
if (!string) {
return nullptr;
}
CFRange range = CFRangeMake(0, CFStringGetLength(string.get())); // in UniChar units.
SkUniqueCFRef<CTFontRef> fallbackFont(
CTFontCreateForString(familyFont.get(), string.get(), range));
return SkTypeface_Mac::Make(std::move(fallbackFont), OpszVariation(), nullptr).release();
}
sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData> data, int ttcIndex) const override {
if (ttcIndex != 0) {
return nullptr;
}
SkUniqueCFRef<CTFontRef> ct = ctfont_from_skdata(data, ttcIndex);
if (!ct) {
return nullptr;
}
return SkTypeface_Mac::Make(std::move(ct), OpszVariation(),
SkMemoryStream::Make(std::move(data)));
}
sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset> stream,
int ttcIndex) const override {
if (ttcIndex != 0) {
return nullptr;
}
sk_sp<SkData> data = skdata_from_skstreamasset(stream->duplicate());
if (!data) {
return nullptr;
}
SkUniqueCFRef<CTFontRef> ct = ctfont_from_skdata(std::move(data), ttcIndex);
if (!ct) {
return nullptr;
}
return SkTypeface_Mac::Make(std::move(ct), OpszVariation(), std::move(stream));
}
sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream,
const SkFontArguments& args) const override
{
// TODO: Use CTFontManagerCreateFontDescriptorsFromData when available.
int ttcIndex = args.getCollectionIndex();
if (ttcIndex != 0) {
return nullptr;
}
sk_sp<SkData> data = skdata_from_skstreamasset(stream->duplicate());
if (!data) {
return nullptr;
}
SkUniqueCFRef<CTFontRef> ct = ctfont_from_skdata(std::move(data), ttcIndex);
if (!ct) {
return nullptr;
}
SkUniqueCFRef<CFArrayRef> axes(CTFontCopyVariationAxes(ct.get()));
CTFontVariation ctVariation = SkCTVariationFromSkFontArguments(ct.get(), axes.get(), args);
SkUniqueCFRef<CTFontRef> ctVariant;
if (ctVariation.variation) {
SkUniqueCFRef<CFMutableDictionaryRef> attributes(
CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks));
CFDictionaryAddValue(attributes.get(),
kCTFontVariationAttribute, ctVariation.variation.get());
SkUniqueCFRef<CTFontDescriptorRef> varDesc(
CTFontDescriptorCreateWithAttributes(attributes.get()));
ctVariant.reset(CTFontCreateCopyWithAttributes(ct.get(), 0, nullptr, varDesc.get()));
} else {
ctVariant.reset(ct.release());
}
if (!ctVariant) {
return nullptr;
}
return SkTypeface_Mac::Make(std::move(ctVariant), ctVariation.opsz, std::move(stream));
}
sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override {
if (ttcIndex != 0) {
return nullptr;
}
sk_sp<SkData> data = SkData::MakeFromFileName(path);
if (!data) {
return nullptr;
}
return this->onMakeFromData(std::move(data), ttcIndex);
}
sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle style) const override {
if (familyName) {
familyName = map_css_names(familyName);
}
sk_sp<SkTypeface> face = create_from_name(familyName, style);
if (face) {
return face;
}
static SkTypeface* gDefaultFace;
static SkOnce lookupDefault;
static const char FONT_DEFAULT_NAME[] = "Lucida Sans";
lookupDefault([]{
gDefaultFace = create_from_name(FONT_DEFAULT_NAME, SkFontStyle()).release();
});
return sk_ref_sp(gDefaultFace);
}
};
sk_sp<SkFontMgr> SkFontMgr_New_CoreText(CTFontCollectionRef fontCollection) {
return sk_make_sp<SkFontMgr_Mac>(fontCollection);
}
#endif//defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)