54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
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/*
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* Copyright 2021 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkOrderedFontMgr_DEFINED
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#define SkOrderedFontMgr_DEFINED
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#include "include/core/SkFontMgr.h"
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#include <vector>
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/**
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* Collects an order list of other font managers, and visits them in order
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* when a request to find or match is issued.
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*
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* Note: this explicitly fails on any attempt to Make a typeface: all of
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* those requests will return null.
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*/
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class SK_API SkOrderedFontMgr : public SkFontMgr {
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public:
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SkOrderedFontMgr();
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~SkOrderedFontMgr() override;
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void append(sk_sp<SkFontMgr>);
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protected:
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int onCountFamilies() const override;
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void onGetFamilyName(int index, SkString* familyName) const override;
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SkFontStyleSet* onCreateStyleSet(int index)const override;
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SkFontStyleSet* onMatchFamily(const char familyName[]) const override;
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SkTypeface* onMatchFamilyStyle(const char familyName[], const SkFontStyle&) const override;
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SkTypeface* onMatchFamilyStyleCharacter(const char familyName[], const SkFontStyle&,
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const char* bcp47[], int bcp47Count,
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SkUnichar character) const override;
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// Note: all of these always return null
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sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData>, int ttcIndex) const override;
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sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>,
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int ttcIndex) const override;
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sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset>,
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const SkFontArguments&) const override;
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sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override;
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sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle) const override;
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private:
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std::vector<sk_sp<SkFontMgr>> fList;
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};
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#endif
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