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-rw-r--r--src/fonts/SkFontMgr_fontconfig.cpp247
1 files changed, 1 insertions, 246 deletions
diff --git a/src/fonts/SkFontMgr_fontconfig.cpp b/src/fonts/SkFontMgr_fontconfig.cpp
index 09b4d13dd4..423527c18f 100644
--- a/src/fonts/SkFontMgr_fontconfig.cpp
+++ b/src/fonts/SkFontMgr_fontconfig.cpp
@@ -5,249 +5,4 @@
* found in the LICENSE file.
*/
-#include "SkFontConfigInterface.h"
-#include "SkFontConfigTypeface.h"
-#include "SkFontDescriptor.h"
-#include "SkFontMgr.h"
-#include "SkFontStyle.h"
-#include "SkMutex.h"
-#include "SkString.h"
-#include "SkTypeface.h"
-#include "SkTypefaceCache.h"
-#include "SkResourceCache.h"
-
-SkStreamAsset* SkTypeface_FCI::onOpenStream(int* ttcIndex) const {
- *ttcIndex = this->getIdentity().fTTCIndex;
-
- SkStreamAsset* stream = this->getLocalStream();
- if (stream) {
- return stream->duplicate();
- }
-
- return fFCI->openStream(this->getIdentity());
-}
-
-void SkTypeface_FCI::onGetFontDescriptor(SkFontDescriptor* desc, bool* isLocalStream) const {
- SkString name;
- this->getFamilyName(&name);
- desc->setFamilyName(name.c_str());
- desc->setStyle(this->fontStyle());
- *isLocalStream = SkToBool(this->getLocalStream());
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkFontStyleSet_FCI : public SkFontStyleSet {
-public:
- SkFontStyleSet_FCI() {}
-
- int count() override { return 0; }
- void getStyle(int index, SkFontStyle*, SkString* style) override { SkASSERT(false); }
- SkTypeface* createTypeface(int index) override { SkASSERT(false); return nullptr; }
- SkTypeface* matchStyle(const SkFontStyle& pattern) override { return nullptr; }
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkFontRequestCache {
-public:
- struct Request : public SkResourceCache::Key {
- private:
- Request(const char* name, size_t nameLen, const SkFontStyle& style) : fStyle(style) {
- /** Pointer to just after the last field of this class. */
- char* content = const_cast<char*>(SkTAfter<const char>(&this->fStyle));
-
- // No holes.
- SkASSERT(SkTAddOffset<char>(this, sizeof(SkResourceCache::Key) + keySize) == content);
-
- // Has a size divisible by size of uint32_t.
- SkASSERT((content - reinterpret_cast<char*>(this)) % sizeof(uint32_t) == 0);
-
- size_t contentLen = SkAlign4(nameLen);
- sk_careful_memcpy(content, name, nameLen);
- sk_bzero(content + nameLen, contentLen - nameLen);
- this->init(nullptr, 0, keySize + contentLen);
- }
- const SkFontStyle fStyle;
- /** The sum of the sizes of the fields of this class. */
- static const size_t keySize = sizeof(fStyle);
-
- public:
- static Request* Create(const char* name, const SkFontStyle& style) {
- size_t nameLen = name ? strlen(name) : 0;
- size_t contentLen = SkAlign4(nameLen);
- char* storage = new char[sizeof(Request) + contentLen];
- return new (storage) Request(name, nameLen, style);
- }
- void operator delete(void* storage) {
- delete[] reinterpret_cast<char*>(storage);
- }
- };
-
-
-private:
- struct Result : public SkResourceCache::Rec {
- Result(Request* request, SkTypeface* typeface)
- : fRequest(request)
- , fFace(SkSafeRef(typeface)) {}
- Result(Result&&) = default;
- Result& operator=(Result&&) = default;
-
- const Key& getKey() const override { return *fRequest; }
- size_t bytesUsed() const override { return fRequest->size() + sizeof(fFace); }
- const char* getCategory() const override { return "request_cache"; }
- SkDiscardableMemory* diagnostic_only_getDiscardable() const override { return nullptr; }
-
- SkAutoTDelete<Request> fRequest;
- SkAutoTUnref<SkTypeface> fFace;
- };
-
- SkResourceCache fCachedResults;
-
-public:
- SkFontRequestCache(size_t maxSize) : fCachedResults(maxSize) {}
-
- /** Takes ownership of request. It will be deleted when no longer needed. */
- void add(SkTypeface* face, Request* request) {
- fCachedResults.add(new Result(request, face));
- }
- /** Does not take ownership of request. */
- SkTypeface* findAndRef(Request* request) {
- SkTypeface* face = nullptr;
- fCachedResults.find(*request, [](const SkResourceCache::Rec& rec, void* context) -> bool {
- const Result& result = static_cast<const Result&>(rec);
- SkTypeface** face = static_cast<SkTypeface**>(context);
-
- *face = result.fFace;
- return true;
- }, &face);
- return SkSafeRef(face);
- }
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-static bool find_by_FontIdentity(SkTypeface* cachedTypeface, void* ctx) {
- typedef SkFontConfigInterface::FontIdentity FontIdentity;
- SkTypeface_FCI* cachedFCTypeface = static_cast<SkTypeface_FCI*>(cachedTypeface);
- FontIdentity* identity = static_cast<FontIdentity*>(ctx);
-
- return cachedFCTypeface->getIdentity() == *identity;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkFontMgr_FCI : public SkFontMgr {
- SkAutoTUnref<SkFontConfigInterface> fFCI;
- SkAutoTUnref<SkDataTable> fFamilyNames;
- SkTypeface_FreeType::Scanner fScanner;
-
- mutable SkMutex fMutex;
- mutable SkTypefaceCache fTFCache;
-
- // The value of maxSize here is a compromise between cache hits and cache size.
- // See https://crbug.com/424082#63 for reason for current size.
- static const size_t kMaxSize = 1 << 15;
- mutable SkFontRequestCache fCache;
-
-public:
- SkFontMgr_FCI(SkFontConfigInterface* fci)
- : fFCI(fci)
- , fFamilyNames(fFCI->getFamilyNames())
- , fCache(kMaxSize)
- {}
-
-protected:
- int onCountFamilies() const override {
- return fFamilyNames->count();
- }
-
- void onGetFamilyName(int index, SkString* familyName) const override {
- familyName->set(fFamilyNames->atStr(index));
- }
-
- SkFontStyleSet* onCreateStyleSet(int index) const override {
- return this->onMatchFamily(fFamilyNames->atStr(index));
- }
-
- SkFontStyleSet* onMatchFamily(const char familyName[]) const override {
- return new SkFontStyleSet_FCI();
- }
-
- SkTypeface* onMatchFamilyStyle(const char familyName[],
- const SkFontStyle&) const override { return nullptr; }
- SkTypeface* onMatchFamilyStyleCharacter(const char familyName[], const SkFontStyle&,
- const char* bcp47[], int bcp47Count,
- SkUnichar character) const override {
- return nullptr;
- }
- SkTypeface* onMatchFaceStyle(const SkTypeface*,
- const SkFontStyle&) const override { return nullptr; }
-
- SkTypeface* onCreateFromData(SkData*, int ttcIndex) const override { return nullptr; }
-
- SkTypeface* onCreateFromStream(SkStreamAsset* bareStream, int ttcIndex) const override {
- SkAutoTDelete<SkStreamAsset> stream(bareStream);
- const size_t length = stream->getLength();
- if (!length) {
- return nullptr;
- }
- if (length >= 1024 * 1024 * 1024) {
- return nullptr; // don't accept too large fonts (>= 1GB) for safety.
- }
-
- // TODO should the caller give us the style or should we get it from freetype?
- SkFontStyle style;
- bool isFixedWidth = false;
- if (!fScanner.scanFont(stream, 0, nullptr, &style, &isFixedWidth, nullptr)) {
- return nullptr;
- }
-
- return SkTypeface_FCI::Create(style, isFixedWidth, stream.release(), ttcIndex);
- }
-
- SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const override {
- SkAutoTDelete<SkStreamAsset> stream(SkStream::NewFromFile(path));
- return stream.get() ? this->createFromStream(stream.release(), ttcIndex) : nullptr;
- }
-
- SkTypeface* onLegacyCreateTypeface(const char requestedFamilyName[],
- SkFontStyle requestedStyle) const override
- {
- SkAutoMutexAcquire ama(fMutex);
-
- // Check if this request is already in the request cache.
- using Request = SkFontRequestCache::Request;
- SkAutoTDelete<Request> request(Request::Create(requestedFamilyName, requestedStyle));
- SkTypeface* face = fCache.findAndRef(request);
- if (face) {
- return face;
- }
-
- SkFontConfigInterface::FontIdentity identity;
- SkString outFamilyName;
- SkFontStyle outStyle;
- if (!fFCI->matchFamilyName(requestedFamilyName, requestedStyle,
- &identity, &outFamilyName, &outStyle))
- {
- return nullptr;
- }
-
- // Check if a typeface with this FontIdentity is already in the FontIdentity cache.
- face = fTFCache.findByProcAndRef(find_by_FontIdentity, &identity);
- if (!face) {
- face = SkTypeface_FCI::Create(fFCI, identity, outFamilyName, outStyle);
- // Add this FontIdentity to the FontIdentity cache.
- fTFCache.add(face);
- }
- // Add this request to the request cache.
- fCache.add(face, request.release());
-
- return face;
- }
-};
-
-SK_API SkFontMgr* SkFontMgr_New_FCI(SkFontConfigInterface* fci) {
- SkASSERT(fci);
- return new SkFontMgr_FCI(fci);
-}
+#include "../ports/SkFontMgr_FontConfigInterface.cpp"
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 13:03:56 +0000