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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkFontMgr.h"
#include "SkFontMgr_indirect.h"
#include "SkFontStyle.h"
#include "SkMutex.h"
#include "SkOnce.h"
#include "SkRefCnt.h"
#include "SkRemotableFontMgr.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkTArray.h"
#include "SkTypeface.h"
#include "SkTypes.h"
#include "SkTemplates.h"
class SkData;
class SkStyleSet_Indirect : public SkFontStyleSet {
public:
/** Takes ownership of the SkRemotableFontIdentitySet. */
SkStyleSet_Indirect(const SkFontMgr_Indirect* owner, int familyIndex,
SkRemotableFontIdentitySet* data)
: fOwner(SkRef(owner)), fFamilyIndex(familyIndex), fData(data)
{ }
int count() override { return fData->count(); }
void getStyle(int index, SkFontStyle* fs, SkString* style) override {
if (fs) {
*fs = fData->at(index).fFontStyle;
}
if (style) {
// TODO: is this useful? Current locale?
style->reset();
}
}
SkTypeface* createTypeface(int index) override {
return fOwner->createTypefaceFromFontId(fData->at(index));
}
SkTypeface* matchStyle(const SkFontStyle& pattern) override {
if (fFamilyIndex >= 0) {
SkFontIdentity id = fOwner->fProxy->matchIndexStyle(fFamilyIndex, pattern);
return fOwner->createTypefaceFromFontId(id);
}
return this->matchStyleCSS3(pattern);
}
private:
sk_sp<const SkFontMgr_Indirect> fOwner;
int fFamilyIndex;
sk_sp<SkRemotableFontIdentitySet> fData;
};
int SkFontMgr_Indirect::onCountFamilies() const {
return 0;
}
void SkFontMgr_Indirect::onGetFamilyName(int index, SkString* familyName) const {
SkFAIL("Not implemented");
}
SkFontStyleSet* SkFontMgr_Indirect::onCreateStyleSet(int index) const {
SkFAIL("Not implemented");
return nullptr;
}
SkFontStyleSet* SkFontMgr_Indirect::onMatchFamily(const char familyName[]) const {
return new SkStyleSet_Indirect(this, -1, fProxy->matchName(familyName));
}
SkTypeface* SkFontMgr_Indirect::createTypefaceFromFontId(const SkFontIdentity& id) const {
if (id.fDataId == SkFontIdentity::kInvalidDataId) {
return nullptr;
}
SkAutoMutexAcquire ama(fDataCacheMutex);
sk_sp<SkTypeface> dataTypeface;
int dataTypefaceIndex = 0;
for (int i = 0; i < fDataCache.count(); ++i) {
const DataEntry& entry = fDataCache[i];
if (entry.fDataId == id.fDataId) {
if (entry.fTtcIndex == id.fTtcIndex &&
!entry.fTypeface->weak_expired() && entry.fTypeface->try_ref())
{
return entry.fTypeface;
}
if (dataTypeface.get() == nullptr &&
!entry.fTypeface->weak_expired() && entry.fTypeface->try_ref())
{
dataTypeface.reset(entry.fTypeface);
dataTypefaceIndex = entry.fTtcIndex;
}
}
if (entry.fTypeface->weak_expired()) {
fDataCache.removeShuffle(i);
--i;
}
}
// No exact match, but did find a data match.
if (dataTypeface.get() != nullptr) {
std::unique_ptr<SkStreamAsset> stream(dataTypeface->openStream(nullptr));
if (stream.get() != nullptr) {
return fImpl->createFromStream(stream.release(), dataTypefaceIndex);
}
}
// No data match, request data and add entry.
std::unique_ptr<SkStreamAsset> stream(fProxy->getData(id.fDataId));
if (stream.get() == nullptr) {
return nullptr;
}
sk_sp<SkTypeface> typeface(fImpl->createFromStream(stream.release(), id.fTtcIndex));
if (typeface.get() == nullptr) {
return nullptr;
}
DataEntry& newEntry = fDataCache.push_back();
typeface->weak_ref();
newEntry.fDataId = id.fDataId;
newEntry.fTtcIndex = id.fTtcIndex;
newEntry.fTypeface = typeface.get(); // weak reference passed to new entry.
return typeface.release();
}
SkTypeface* SkFontMgr_Indirect::onMatchFamilyStyle(const char familyName[],
const SkFontStyle& fontStyle) const {
SkFontIdentity id = fProxy->matchNameStyle(familyName, fontStyle);
return this->createTypefaceFromFontId(id);
}
SkTypeface* SkFontMgr_Indirect::onMatchFamilyStyleCharacter(const char familyName[],
const SkFontStyle& style,
const char* bcp47[],
int bcp47Count,
SkUnichar character) const {
SkFontIdentity id = fProxy->matchNameStyleCharacter(familyName, style, bcp47,
bcp47Count, character);
return this->createTypefaceFromFontId(id);
}
SkTypeface* SkFontMgr_Indirect::onMatchFaceStyle(const SkTypeface* familyMember,
const SkFontStyle& fontStyle) const {
SkString familyName;
familyMember->getFamilyName(&familyName);
return this->matchFamilyStyle(familyName.c_str(), fontStyle);
}
SkTypeface* SkFontMgr_Indirect::onCreateFromStream(SkStreamAsset* stream, int ttcIndex) const {
return fImpl->createFromStream(stream, ttcIndex);
}
SkTypeface* SkFontMgr_Indirect::onCreateFromFile(const char path[], int ttcIndex) const {
return fImpl->createFromFile(path, ttcIndex);
}
SkTypeface* SkFontMgr_Indirect::onCreateFromData(SkData* data, int ttcIndex) const {
return fImpl->createFromData(data, ttcIndex);
}
SkTypeface* SkFontMgr_Indirect::onLegacyCreateTypeface(const char familyName[],
SkFontStyle style) const {
sk_sp<SkTypeface> face(this->matchFamilyStyle(familyName, style));
if (nullptr == face.get()) {
face.reset(this->matchFamilyStyle(nullptr, style));
}
if (nullptr == face.get()) {
SkFontIdentity fontId = this->fProxy->matchIndexStyle(0, style);
face.reset(this->createTypefaceFromFontId(fontId));
}
return face.release();
}
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