SkFontMgr_fontations_empty.h

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/*
 * Copyright 2024 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkFontMgr_custom_DEFINED
#define SkFontMgr_custom_DEFINED
 
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontStyle.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/private/base/SkTArray.h"
 
class SkData;
class SkStreamAsset;
class SkTypeface;
 
/**
 *  SkFontMgr_Fontations_Empty
 *
 *  A SkFontMgr with an empty list of fonts, meant as a basic tool for font instantiation from
 *  data in testing, see TestFontMgr in FontToolUtils.
 */
class SkFontMgr_Fontations_Empty : public SkFontMgr {
public:
    SkFontMgr_Fontations_Empty() = default;
 
protected:
    int onCountFamilies() const override;
    void onGetFamilyName(int index, SkString* familyName) const override;
    sk_sp<SkFontStyleSet> onCreateStyleSet(int index) const override;
    sk_sp<SkFontStyleSet> onMatchFamily(const char familyName[]) const override;
    sk_sp<SkTypeface> onMatchFamilyStyle(const char familyName[],
                                         const SkFontStyle& fontStyle) const override;
    sk_sp<SkTypeface> onMatchFamilyStyleCharacter(const char familyName[],
                                                  const SkFontStyle&,
                                                  const char* bcp47[],
                                                  int bcp47Count,
                                                  SkUnichar character) const override;
    sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData> data, int ttcIndex) const override;
    sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>,
                                            int ttcIndex) const override;
    sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset>,
                                           const SkFontArguments&) const override;
    sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override;
    sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[],
                                           SkFontStyle style) const override;
};
 
#endif