blob: 2a499ab6760c1523fda5f7e3a3ae1b8008456e34 [file] [log] [blame]
* Copyright 2014 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkFontMgr_indirect_DEFINED
#define SkFontMgr_indirect_DEFINED
#include "include/core/SkFontMgr.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/ports/SkRemotableFontMgr.h"
#include "include/private/base/SkMutex.h"
#include "include/private/base/SkOnce.h"
#include "include/private/base/SkTArray.h"
class SkData;
class SkFontStyle;
class SkStreamAsset;
class SkString;
class SK_API SkFontMgr_Indirect : public SkFontMgr {
// TODO: The SkFontMgr is only used for createFromStream/File/Data.
// In the future these calls should be broken out into their own interface
// with a name like SkFontRenderer.
SkFontMgr_Indirect(sk_sp<SkFontMgr> impl, sk_sp<SkRemotableFontMgr> proxy)
: fImpl(std::move(impl)), fProxy(std::move(proxy))
{ }
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& fontStyle) const override;
SkTypeface* onMatchFamilyStyleCharacter(const char familyName[],
const SkFontStyle&,
const char* bcp47[],
int bcp47Count,
SkUnichar character) const override;
sk_sp<SkTypeface> onMakeFromStreamIndex(std::unique_ptr<SkStreamAsset>, int ttcIndex) const override;
sk_sp<SkTypeface> onMakeFromStreamArgs(std::unique_ptr<SkStreamAsset> stream,
const SkFontArguments& args) const override;
sk_sp<SkTypeface> onMakeFromFile(const char path[], int ttcIndex) const override;
sk_sp<SkTypeface> onMakeFromData(sk_sp<SkData>, int ttcIndex) const override;
sk_sp<SkTypeface> onLegacyMakeTypeface(const char familyName[], SkFontStyle) const override;
SkTypeface* createTypefaceFromFontId(const SkFontIdentity& fontId) const;
sk_sp<SkFontMgr> fImpl;
sk_sp<SkRemotableFontMgr> fProxy;
struct DataEntry {
uint32_t fDataId; // key1
uint32_t fTtcIndex; // key2
SkTypeface* fTypeface; // value: weak ref to typeface
DataEntry() = default;
DataEntry(DataEntry&& that) { *this = std::move(that); }
DataEntry& operator=(DataEntry&& that) {
if (this != &that) {
fDataId = that.fDataId;
fTtcIndex = that.fTtcIndex;
fTypeface = that.fTypeface;
SkDEBUGCODE(that.fDataId = SkFontIdentity::kInvalidDataId;)
SkDEBUGCODE(that.fTtcIndex = 0xbbadbeef;)
that.fTypeface = nullptr;
return *this;
~DataEntry() {
if (fTypeface) {
* This cache is essentially { dataId: { ttcIndex: typeface } }
* For data caching we want a mapping from data id to weak references to
* typefaces with that data id. By storing the index next to the typeface,
* this data cache also acts as a typeface cache.
mutable SkTArray<DataEntry> fDataCache;
mutable SkMutex fDataCacheMutex;
friend class SkStyleSet_Indirect;