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