/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "FontCache.h"
#import "Font.h"
#import "FontCascade.h"
#import "FontPlatformData.h"
#import <pal/spi/cg/CoreGraphicsSPI.h>
#import <pal/spi/cocoa/CoreTextSPI.h>
#if PLATFORM(MAC)
#import <AppKit/AppKit.h>
#import <pal/spi/mac/NSFontSPI.h>
#import <wtf/MainThread.h>
#import <wtf/NeverDestroyed.h>
#import <wtf/StdLibExtras.h>
#import <wtf/Threading.h>
#import <wtf/text/AtomicStringHash.h>
#endif
#import <wtf/SoftLinking.h>
namespace WebCore {
#if PLATFORM(MAC)
static CGFloat toNSFontWeight(FontSelectionValue fontWeight)
{
if (fontWeight < FontSelectionValue(150))
return NSFontWeightUltraLight;
if (fontWeight < FontSelectionValue(250))
return NSFontWeightThin;
if (fontWeight < FontSelectionValue(350))
return NSFontWeightLight;
if (fontWeight < FontSelectionValue(450))
return NSFontWeightRegular;
if (fontWeight < FontSelectionValue(550))
return NSFontWeightMedium;
if (fontWeight < FontSelectionValue(650))
return NSFontWeightSemibold;
if (fontWeight < FontSelectionValue(750))
return NSFontWeightBold;
if (fontWeight < FontSelectionValue(850))
return NSFontWeightHeavy;
return NSFontWeightBlack;
}
RetainPtr<CTFontRef> platformFontWithFamilySpecialCase(const AtomicString& family, FontSelectionRequest request, float size, AllowUserInstalledFonts allowUserInstalledFonts)
{
// FIXME: See comment in FontCascadeDescription::effectiveFamilyAt() in FontDescriptionCocoa.cpp
if (equalLettersIgnoringASCIICase(family, "-webkit-system-font") || equalLettersIgnoringASCIICase(family, "-apple-system") || equalLettersIgnoringASCIICase(family, "-apple-system-font") || equalLettersIgnoringASCIICase(family, "system-ui")) {
RetainPtr<CTFontRef> result = toCTFont([NSFont systemFontOfSize:size weight:toNSFontWeight(request.weight)]);
if (isItalic(request.slope)) {
CTFontSymbolicTraits desiredTraits = kCTFontItalicTrait;
if (isFontWeightBold(request.weight))
desiredTraits |= kCTFontBoldTrait;
if (auto italicizedFont = adoptCF(CTFontCreateCopyWithSymbolicTraits(result.get(), size, nullptr, desiredTraits, desiredTraits)))
result = italicizedFont;
}
return createFontForInstalledFonts(result.get(), allowUserInstalledFonts);
}
if (equalLettersIgnoringASCIICase(family, "-apple-system-monospaced-numbers")) {
int numberSpacingType = kNumberSpacingType;
int monospacedNumbersSelector = kMonospacedNumbersSelector;
RetainPtr<CFNumberRef> numberSpacingNumber = adoptCF(CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &numberSpacingType));
RetainPtr<CFNumberRef> monospacedNumbersNumber = adoptCF(CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &monospacedNumbersSelector));
CFTypeRef featureKeys[] = { kCTFontFeatureTypeIdentifierKey, kCTFontFeatureSelectorIdentifierKey };
CFTypeRef featureValues[] = { numberSpacingNumber.get(), monospacedNumbersNumber.get() };
RetainPtr<CFDictionaryRef> featureIdentifier = adoptCF(CFDictionaryCreate(kCFAllocatorDefault, featureKeys, featureValues, WTF_ARRAY_LENGTH(featureKeys), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
CFTypeRef featureIdentifiers[] = { featureIdentifier.get() };
RetainPtr<CFArrayRef> featureArray = adoptCF(CFArrayCreate(kCFAllocatorDefault, featureIdentifiers, 1, &kCFTypeArrayCallBacks));
auto attributes = adoptCF(CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
CFDictionaryAddValue(attributes.get(), kCTFontFeatureSettingsAttribute, featureArray.get());
addAttributesForInstalledFonts(attributes.get(), allowUserInstalledFonts);
RetainPtr<CTFontRef> result = toCTFont([NSFont systemFontOfSize:size]);
auto modification = adoptCF(CTFontDescriptorCreateWithAttributes(attributes.get()));
return adoptCF(CTFontCreateCopyWithAttributes(result.get(), size, nullptr, modification.get()));
}
if (equalLettersIgnoringASCIICase(family, "-apple-menu")) {
RetainPtr<CTFontRef> result = toCTFont([NSFont menuFontOfSize:size]);
return createFontForInstalledFonts(result.get(), allowUserInstalledFonts);
}
if (equalLettersIgnoringASCIICase(family, "-apple-status-bar")) {
RetainPtr<CTFontRef> result = toCTFont([NSFont labelFontOfSize:size]);
return createFontForInstalledFonts(result.get(), allowUserInstalledFonts);
}
if (equalLettersIgnoringASCIICase(family, "lastresort")) {
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
static const CTFontDescriptorRef lastResort = CTFontDescriptorCreateLastResort();
return adoptCF(CTFontCreateWithFontDescriptor(lastResort, size, nullptr));
#else
// LastResort is special, so it's important to look this exact string up, and not some case-folded version.
// We handle this here so any caching and case folding we do in our general text codepath is bypassed.
return adoptCF(CTFontCreateWithName(CFSTR("LastResort"), size, nullptr));
#endif
}
return nullptr;
}
#endif // PLATFORM(MAC)
} // namespace WebCore