Source/WebCore/platform/graphics/cocoa/FontCacheCoreText.h

/*
 * Copyright (C) 2017-2021 Apple Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
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 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
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 * 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
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 */

#pragma once

#include "FontDescription.h"
#include "ShouldLocalizeAxisNames.h"

#include <CoreText/CTFont.h>

namespace WebCore {

class FontCreationContext;

struct SynthesisPair {
    explicit SynthesisPair(bool needsSyntheticBold, bool needsSyntheticOblique)
        : needsSyntheticBold(needsSyntheticBold)
        , needsSyntheticOblique(needsSyntheticOblique)
    {
    }

    std::pair<bool, bool> boldObliquePair() const
    {
        return std::make_pair(needsSyntheticBold, needsSyntheticOblique);
    }

    bool needsSyntheticBold;
    bool needsSyntheticOblique;
};

struct VariationDefaults {
    String axisName;
    float defaultValue;
    float minimumValue;
    float maximumValue;
};

typedef HashMap<FontTag, VariationDefaults, FourCharacterTagHash, FourCharacterTagHashTraits> VariationDefaultsMap;

RetainPtr<CTFontRef> preparePlatformFont(CTFontRef, const FontDescription&, const FontCreationContext&, bool applyWeightWidthSlopeVariations = true);
enum class ShouldComputePhysicalTraits : bool { No, Yes };
SynthesisPair computeNecessarySynthesis(CTFontRef, const FontDescription&, ShouldComputePhysicalTraits = ShouldComputePhysicalTraits::No, bool isPlatformFont = false);
RetainPtr<CTFontRef> platformFontWithFamily(const AtomString& family, FontSelectionRequest, TextRenderingMode, float size);
FontSelectionCapabilities capabilitiesForFontDescriptor(CTFontDescriptorRef);
void addAttributesForInstalledFonts(CFMutableDictionaryRef attributes, AllowUserInstalledFonts);
RetainPtr<CTFontRef> createFontForInstalledFonts(CTFontDescriptorRef, CGFloat size, AllowUserInstalledFonts);
RetainPtr<CTFontRef> createFontForInstalledFonts(CTFontRef, AllowUserInstalledFonts);
void addAttributesForWebFonts(CFMutableDictionaryRef attributes, AllowUserInstalledFonts);
RetainPtr<CFSetRef> installedFontMandatoryAttributes(AllowUserInstalledFonts);

VariationDefaultsMap defaultVariationValues(CTFontRef, ShouldLocalizeAxisNames);
}