Source/WebCore/platform/graphics/cocoa/FontCacheCocoa.mm

/*
 * Copyright (C) 2022 Apple Inc. All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 "FontCacheCoreText.h"
#import <wtf/cocoa/TypeCastsCocoa.h>

#import <pal/ios/UIKitSoftLink.h>

namespace WebCore {

#if PLATFORM(IOS_FAMILY)
CFStringRef getUIContentSizeCategoryDidChangeNotificationName()
{
    return static_cast<CFStringRef>(PAL::get_UIKit_UIContentSizeCategoryDidChangeNotification());
}
#endif

static String& contentSizeCategoryStorage()
{
    static NeverDestroyed<String> contentSizeCategory;
    return contentSizeCategory.get();
}

CFStringRef contentSizeCategory()
{
    if (!contentSizeCategoryStorage().isNull()) {
        // The contract of this function is that it returns a +0 autoreleased object (just like [[UIApplication sharedApplication] preferredContentSizeCategory] does).
        // String's operator NSString returns a +0 autoreleased object, so we do that here, and then cast it to CFStringRef to return it.
        return bridge_cast(static_cast<NSString*>(contentSizeCategoryStorage()));
    }
#if PLATFORM(IOS_FAMILY)
    return static_cast<CFStringRef>([[PAL::getUIApplicationClass() sharedApplication] preferredContentSizeCategory]);
#else
    return kCTFontContentSizeCategoryL;
#endif
}

void setContentSizeCategory(const String& contentSizeCategory)
{
    contentSizeCategoryStorage() = contentSizeCategory;
}

} // namespace WebCore