/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifdef MOZ_LOGGING #define FORCE_PR_LOG /* Allow logging in the release build */ #endif #include "prlog.h" #include "gfxPlatformFontList.h" #include "gfxUserFontSet.h" #include "nsUnicharUtils.h" #include "nsUnicodeRange.h" #include "nsUnicodeProperties.h" #include "mozilla/Attributes.h" #include "mozilla/Likely.h" #include "mozilla/MemoryReporting.h" #include "mozilla/Preferences.h" #include "mozilla/Telemetry.h" #include "mozilla/TimeStamp.h" #include "mozilla/gfx/2D.h" using namespace mozilla; #ifdef PR_LOGGING #define LOG_FONTLIST(args) PR_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), \ PR_LOG_DEBUG, args) #define LOG_FONTLIST_ENABLED() PR_LOG_TEST( \ gfxPlatform::GetLog(eGfxLog_fontlist), \ PR_LOG_DEBUG) #define LOG_FONTINIT(args) PR_LOG(gfxPlatform::GetLog(eGfxLog_fontinit), \ PR_LOG_DEBUG, args) #define LOG_FONTINIT_ENABLED() PR_LOG_TEST( \ gfxPlatform::GetLog(eGfxLog_fontinit), \ PR_LOG_DEBUG) #endif // PR_LOGGING gfxPlatformFontList *gfxPlatformFontList::sPlatformFontList = nullptr; // Character ranges that require complex-script shaping support in the font, // and so should be masked out by ReadCMAP if the necessary layout tables // are not present. // Currently used by the Mac and FT2 implementations only, but probably should // be supported on Windows as well. const gfxFontEntry::ScriptRange gfxPlatformFontList::sComplexScriptRanges[] = { // Actually, now that harfbuzz supports presentation-forms shaping for // Arabic, we can render it without layout tables. So maybe we don't // want to mask the basic Arabic block here? // This affects the arabic-fallback-*.html reftests, which rely on // loading a font that *doesn't* have any GSUB table. { 0x0600, 0x06FF, { TRUETYPE_TAG('a','r','a','b'), 0, 0 } }, { 0x0700, 0x074F, { TRUETYPE_TAG('s','y','r','c'), 0, 0 } }, { 0x0750, 0x077F, { TRUETYPE_TAG('a','r','a','b'), 0, 0 } }, { 0x08A0, 0x08FF, { TRUETYPE_TAG('a','r','a','b'), 0, 0 } }, { 0x0900, 0x097F, { TRUETYPE_TAG('d','e','v','2'), TRUETYPE_TAG('d','e','v','a'), 0 } }, { 0x0980, 0x09FF, { TRUETYPE_TAG('b','n','g','2'), TRUETYPE_TAG('b','e','n','g'), 0 } }, { 0x0A00, 0x0A7F, { TRUETYPE_TAG('g','u','r','2'), TRUETYPE_TAG('g','u','r','u'), 0 } }, { 0x0A80, 0x0AFF, { TRUETYPE_TAG('g','j','r','2'), TRUETYPE_TAG('g','u','j','r'), 0 } }, { 0x0B00, 0x0B7F, { TRUETYPE_TAG('o','r','y','2'), TRUETYPE_TAG('o','r','y','a'), 0 } }, { 0x0B80, 0x0BFF, { TRUETYPE_TAG('t','m','l','2'), TRUETYPE_TAG('t','a','m','l'), 0 } }, { 0x0C00, 0x0C7F, { TRUETYPE_TAG('t','e','l','2'), TRUETYPE_TAG('t','e','l','u'), 0 } }, { 0x0C80, 0x0CFF, { TRUETYPE_TAG('k','n','d','2'), TRUETYPE_TAG('k','n','d','a'), 0 } }, { 0x0D00, 0x0D7F, { TRUETYPE_TAG('m','l','m','2'), TRUETYPE_TAG('m','l','y','m'), 0 } }, { 0x0D80, 0x0DFF, { TRUETYPE_TAG('s','i','n','h'), 0, 0 } }, { 0x0E80, 0x0EFF, { TRUETYPE_TAG('l','a','o',' '), 0, 0 } }, { 0x0F00, 0x0FFF, { TRUETYPE_TAG('t','i','b','t'), 0, 0 } }, { 0x1000, 0x109f, { TRUETYPE_TAG('m','y','m','r'), TRUETYPE_TAG('m','y','m','2'), 0 } }, { 0x1780, 0x17ff, { TRUETYPE_TAG('k','h','m','r'), 0, 0 } }, // Khmer Symbols (19e0..19ff) don't seem to need any special shaping { 0xaa60, 0xaa7f, { TRUETYPE_TAG('m','y','m','r'), TRUETYPE_TAG('m','y','m','2'), 0 } }, // Thai seems to be "renderable" without AAT morphing tables { 0, 0, { 0, 0, 0 } } // terminator }; // prefs for the font info loader #define FONT_LOADER_FAMILIES_PER_SLICE_PREF "gfx.font_loader.families_per_slice" #define FONT_LOADER_DELAY_PREF "gfx.font_loader.delay" #define FONT_LOADER_INTERVAL_PREF "gfx.font_loader.interval" static const char* kObservedPrefs[] = { "font.", "font.name-list.", "intl.accept_languages", // hmmmm... nullptr }; class gfxFontListPrefObserver MOZ_FINAL : public nsIObserver { ~gfxFontListPrefObserver() {} public: NS_DECL_ISUPPORTS NS_DECL_NSIOBSERVER }; static gfxFontListPrefObserver* gFontListPrefObserver = nullptr; NS_IMPL_ISUPPORTS(gfxFontListPrefObserver, nsIObserver) NS_IMETHODIMP gfxFontListPrefObserver::Observe(nsISupports *aSubject, const char *aTopic, const char16_t *aData) { NS_ASSERTION(!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID), "invalid topic"); // XXX this could be made to only clear out the cache for the prefs that were changed // but it probably isn't that big a deal. gfxPlatformFontList::PlatformFontList()->ClearPrefFonts(); gfxFontCache::GetCache()->AgeAllGenerations(); return NS_OK; } MOZ_DEFINE_MALLOC_SIZE_OF(FontListMallocSizeOf) NS_IMPL_ISUPPORTS(gfxPlatformFontList::MemoryReporter, nsIMemoryReporter) NS_IMETHODIMP gfxPlatformFontList::MemoryReporter::CollectReports( nsIMemoryReporterCallback* aCb, nsISupports* aClosure, bool aAnonymize) { FontListSizes sizes; sizes.mFontListSize = 0; sizes.mFontTableCacheSize = 0; sizes.mCharMapsSize = 0; gfxPlatformFontList::PlatformFontList()->AddSizeOfIncludingThis(&FontListMallocSizeOf, &sizes); nsresult rv; rv = aCb->Callback(EmptyCString(), NS_LITERAL_CSTRING("explicit/gfx/font-list"), KIND_HEAP, UNITS_BYTES, sizes.mFontListSize, NS_LITERAL_CSTRING("Memory used to manage the list of font families and faces."), aClosure); NS_ENSURE_SUCCESS(rv, rv); rv = aCb->Callback(EmptyCString(), NS_LITERAL_CSTRING("explicit/gfx/font-charmaps"), KIND_HEAP, UNITS_BYTES, sizes.mCharMapsSize, NS_LITERAL_CSTRING("Memory used to record the character coverage of individual fonts."), aClosure); NS_ENSURE_SUCCESS(rv, rv); if (sizes.mFontTableCacheSize) { aCb->Callback(EmptyCString(), NS_LITERAL_CSTRING("explicit/gfx/font-tables"), KIND_HEAP, UNITS_BYTES, sizes.mFontTableCacheSize, NS_LITERAL_CSTRING("Memory used for cached font metrics and layout tables."), aClosure); } return NS_OK; } gfxPlatformFontList::gfxPlatformFontList(bool aNeedFullnamePostscriptNames) : mFontFamilies(100), mOtherFamilyNames(30), mPrefFonts(10), mBadUnderlineFamilyNames(10), mSharedCmaps(16), mStartIndex(0), mIncrement(1), mNumFamilies(0) { mOtherFamilyNamesInitialized = false; if (aNeedFullnamePostscriptNames) { mExtraNames = new ExtraNames(); } mFaceNameListsInitialized = false; LoadBadUnderlineList(); // pref changes notification setup NS_ASSERTION(!gFontListPrefObserver, "There has been font list pref observer already"); gFontListPrefObserver = new gfxFontListPrefObserver(); NS_ADDREF(gFontListPrefObserver); Preferences::AddStrongObservers(gFontListPrefObserver, kObservedPrefs); RegisterStrongMemoryReporter(new MemoryReporter()); } gfxPlatformFontList::~gfxPlatformFontList() { mSharedCmaps.Clear(); NS_ASSERTION(gFontListPrefObserver, "There is no font list pref observer"); Preferences::RemoveObservers(gFontListPrefObserver, kObservedPrefs); NS_RELEASE(gFontListPrefObserver); } nsresult gfxPlatformFontList::InitFontList() { mFontFamilies.Clear(); mOtherFamilyNames.Clear(); mOtherFamilyNamesInitialized = false; if (mExtraNames) { mExtraNames->mFullnames.Clear(); mExtraNames->mPostscriptNames.Clear(); } mFaceNameListsInitialized = false; mPrefFonts.Clear(); mReplacementCharFallbackFamily = nullptr; CancelLoader(); // initialize ranges of characters for which system-wide font search should be skipped mCodepointsWithNoFonts.reset(); mCodepointsWithNoFonts.SetRange(0,0x1f); // C0 controls mCodepointsWithNoFonts.SetRange(0x7f,0x9f); // C1 controls sPlatformFontList = this; return NS_OK; } void gfxPlatformFontList::GenerateFontListKey(const nsAString& aKeyName, nsAString& aResult) { aResult = aKeyName; ToLowerCase(aResult); } struct InitOtherNamesData { InitOtherNamesData(gfxPlatformFontList *aFontList, TimeStamp aStartTime) : mFontList(aFontList), mStartTime(aStartTime), mTimedOut(false) {} gfxPlatformFontList *mFontList; TimeStamp mStartTime; bool mTimedOut; }; void gfxPlatformFontList::InitOtherFamilyNames() { if (mOtherFamilyNamesInitialized) { return; } TimeStamp start = TimeStamp::Now(); // iterate over all font families and read in other family names InitOtherNamesData otherNamesData(this, start); mFontFamilies.Enumerate(gfxPlatformFontList::InitOtherFamilyNamesProc, &otherNamesData); if (!otherNamesData.mTimedOut) { mOtherFamilyNamesInitialized = true; } TimeStamp end = TimeStamp::Now(); Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITOTHERFAMILYNAMES, start, end); #ifdef PR_LOGGING if (LOG_FONTINIT_ENABLED()) { TimeDuration elapsed = end - start; LOG_FONTINIT(("(fontinit) InitOtherFamilyNames took %8.2f ms %s", elapsed.ToMilliseconds(), (otherNamesData.mTimedOut ? "timeout" : ""))); } #endif } #define OTHERNAMES_TIMEOUT 200 PLDHashOperator gfxPlatformFontList::InitOtherFamilyNamesProc(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void* userArg) { InitOtherNamesData *data = static_cast(userArg); aFamilyEntry->ReadOtherFamilyNames(data->mFontList); TimeDuration elapsed = TimeStamp::Now() - data->mStartTime; if (elapsed.ToMilliseconds() > OTHERNAMES_TIMEOUT) { data->mTimedOut = true; return PL_DHASH_STOP; } return PL_DHASH_NEXT; } struct ReadFaceNamesData { ReadFaceNamesData(gfxPlatformFontList *aFontList, TimeStamp aStartTime) : mFontList(aFontList), mStartTime(aStartTime), mTimedOut(false), mFirstChar(0) {} gfxPlatformFontList *mFontList; TimeStamp mStartTime; bool mTimedOut; // if mFirstChar is not 0, only load facenames for families // that start with this character char16_t mFirstChar; }; gfxFontEntry* gfxPlatformFontList::SearchFamiliesForFaceName(const nsAString& aFaceName) { TimeStamp start = TimeStamp::Now(); gfxFontEntry *lookup = nullptr; ReadFaceNamesData faceNameListsData(this, start); // iterate over familes starting with the same letter faceNameListsData.mFirstChar = ToLowerCase(aFaceName.CharAt(0)); mFontFamilies.Enumerate(gfxPlatformFontList::ReadFaceNamesProc, &faceNameListsData); lookup = FindFaceName(aFaceName); TimeStamp end = TimeStamp::Now(); Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITFACENAMELISTS, start, end); #ifdef PR_LOGGING if (LOG_FONTINIT_ENABLED()) { TimeDuration elapsed = end - start; LOG_FONTINIT(("(fontinit) SearchFamiliesForFaceName took %8.2f ms %s %s", elapsed.ToMilliseconds(), (lookup ? "found name" : ""), (faceNameListsData.mTimedOut ? "timeout" : ""))); } #endif return lookup; } // time limit for loading facename lists (ms) #define NAMELIST_TIMEOUT 200 PLDHashOperator gfxPlatformFontList::ReadFaceNamesProc(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void* userArg) { ReadFaceNamesData *data = static_cast(userArg); gfxPlatformFontList *fc = data->mFontList; // when filtering, skip names that don't start with the filter character if (data->mFirstChar && ToLowerCase(aKey.CharAt(0)) != data->mFirstChar) { return PL_DHASH_NEXT; } aFamilyEntry->ReadFaceNames(fc, fc->NeedFullnamePostscriptNames()); TimeDuration elapsed = TimeStamp::Now() - data->mStartTime; if (elapsed.ToMilliseconds() > NAMELIST_TIMEOUT) { data->mTimedOut = true; return PL_DHASH_STOP; } return PL_DHASH_NEXT; } gfxFontEntry* gfxPlatformFontList::FindFaceName(const nsAString& aFaceName) { gfxFontEntry *lookup; // lookup in name lookup tables, return null if not found if (mExtraNames && ((lookup = mExtraNames->mPostscriptNames.GetWeak(aFaceName)) || (lookup = mExtraNames->mFullnames.GetWeak(aFaceName)))) { return lookup; } return nullptr; } gfxFontEntry* gfxPlatformFontList::LookupInFaceNameLists(const nsAString& aFaceName) { gfxFontEntry *lookup = nullptr; // initialize facename lookup tables if needed // note: this can terminate early or time out, in which case // mFaceNameListsInitialized remains false if (!mFaceNameListsInitialized) { lookup = SearchFamiliesForFaceName(aFaceName); if (lookup) { return lookup; } } // lookup in name lookup tables, return null if not found if (!(lookup = FindFaceName(aFaceName))) { // names not completely initialized, so keep track of lookup misses if (!mFaceNameListsInitialized) { if (!mFaceNamesMissed) { mFaceNamesMissed = new nsTHashtable(4); } mFaceNamesMissed->PutEntry(aFaceName); } } return lookup; } void gfxPlatformFontList::PreloadNamesList() { nsAutoTArray preloadFonts; gfxFontUtils::GetPrefsFontList("font.preload-names-list", preloadFonts); uint32_t numFonts = preloadFonts.Length(); for (uint32_t i = 0; i < numFonts; i++) { nsAutoString key; GenerateFontListKey(preloadFonts[i], key); // only search canonical names! gfxFontFamily *familyEntry = mFontFamilies.GetWeak(key); if (familyEntry) { familyEntry->ReadOtherFamilyNames(this); } } } void gfxPlatformFontList::LoadBadUnderlineList() { nsAutoTArray blacklist; gfxFontUtils::GetPrefsFontList("font.blacklist.underline_offset", blacklist); uint32_t numFonts = blacklist.Length(); for (uint32_t i = 0; i < numFonts; i++) { nsAutoString key; GenerateFontListKey(blacklist[i], key); mBadUnderlineFamilyNames.PutEntry(key); } } static PLDHashOperator RebuildLocalFonts(nsPtrHashKey* aKey, void* aClosure) { aKey->GetKey()->RebuildLocalRules(); return PL_DHASH_NEXT; } void gfxPlatformFontList::UpdateFontList() { InitFontList(); mUserFontSetList.EnumerateEntries(RebuildLocalFonts, nullptr); } struct FontListData { FontListData(nsIAtom *aLangGroup, const nsACString& aGenericFamily, nsTArray& aListOfFonts) : mLangGroup(aLangGroup), mGenericFamily(aGenericFamily), mListOfFonts(aListOfFonts) {} nsIAtom *mLangGroup; const nsACString& mGenericFamily; nsTArray& mListOfFonts; }; PLDHashOperator gfxPlatformFontList::HashEnumFuncForFamilies(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void *aUserArg) { FontListData *data = static_cast(aUserArg); // use the first variation for now. This data should be the same // for all the variations and should probably be moved up to // the Family gfxFontStyle style; style.language = data->mLangGroup; bool needsBold; nsRefPtr aFontEntry = aFamilyEntry->FindFontForStyle(style, needsBold); NS_ASSERTION(aFontEntry, "couldn't find any font entry in family"); if (!aFontEntry) return PL_DHASH_NEXT; /* skip symbol fonts */ if (aFontEntry->IsSymbolFont()) return PL_DHASH_NEXT; if (aFontEntry->SupportsLangGroup(data->mLangGroup) && aFontEntry->MatchesGenericFamily(data->mGenericFamily)) { nsAutoString localizedFamilyName; aFamilyEntry->LocalizedName(localizedFamilyName); data->mListOfFonts.AppendElement(localizedFamilyName); } return PL_DHASH_NEXT; } void gfxPlatformFontList::GetFontList(nsIAtom *aLangGroup, const nsACString& aGenericFamily, nsTArray& aListOfFonts) { FontListData data(aLangGroup, aGenericFamily, aListOfFonts); mFontFamilies.Enumerate(gfxPlatformFontList::HashEnumFuncForFamilies, &data); aListOfFonts.Sort(); aListOfFonts.Compact(); } struct FontFamilyListData { FontFamilyListData(nsTArray >& aFamilyArray) : mFamilyArray(aFamilyArray) {} static PLDHashOperator AppendFamily(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void *aUserArg) { FontFamilyListData *data = static_cast(aUserArg); data->mFamilyArray.AppendElement(aFamilyEntry); return PL_DHASH_NEXT; } nsTArray >& mFamilyArray; }; void gfxPlatformFontList::GetFontFamilyList(nsTArray >& aFamilyArray) { FontFamilyListData data(aFamilyArray); mFontFamilies.Enumerate(FontFamilyListData::AppendFamily, &data); } gfxFontEntry* gfxPlatformFontList::SystemFindFontForChar(const uint32_t aCh, int32_t aRunScript, const gfxFontStyle* aStyle) { gfxFontEntry* fontEntry = nullptr; // is codepoint with no matching font? return null immediately if (mCodepointsWithNoFonts.test(aCh)) { return nullptr; } // Try to short-circuit font fallback for U+FFFD, used to represent // encoding errors: just use cached family from last time U+FFFD was seen. // This helps speed up pages with lots of encoding errors, binary-as-text, // etc. if (aCh == 0xFFFD && mReplacementCharFallbackFamily) { bool needsBold; // ignored in the system fallback case fontEntry = mReplacementCharFallbackFamily->FindFontForStyle(*aStyle, needsBold); // this should never fail, as we must have found U+FFFD in order to set // mReplacementCharFallbackFamily at all, but better play it safe if (fontEntry && fontEntry->TestCharacterMap(aCh)) { return fontEntry; } } TimeStamp start = TimeStamp::Now(); // search commonly available fonts bool common = true; gfxFontFamily *fallbackFamily = nullptr; fontEntry = CommonFontFallback(aCh, aRunScript, aStyle, &fallbackFamily); // if didn't find a font, do system-wide fallback (except for specials) uint32_t cmapCount = 0; if (!fontEntry) { common = false; fontEntry = GlobalFontFallback(aCh, aRunScript, aStyle, cmapCount, &fallbackFamily); } TimeDuration elapsed = TimeStamp::Now() - start; #ifdef PR_LOGGING PRLogModuleInfo *log = gfxPlatform::GetLog(eGfxLog_textrun); if (MOZ_UNLIKELY(PR_LOG_TEST(log, PR_LOG_WARNING))) { uint32_t unicodeRange = FindCharUnicodeRange(aCh); int32_t script = mozilla::unicode::GetScriptCode(aCh); PR_LOG(log, PR_LOG_WARNING,\ ("(textrun-systemfallback-%s) char: u+%6.6x " "unicode-range: %d script: %d match: [%s]" " time: %dus cmaps: %d\n", (common ? "common" : "global"), aCh, unicodeRange, script, (fontEntry ? NS_ConvertUTF16toUTF8(fontEntry->Name()).get() : ""), int32_t(elapsed.ToMicroseconds()), cmapCount)); } #endif // no match? add to set of non-matching codepoints if (!fontEntry) { mCodepointsWithNoFonts.set(aCh); } else if (aCh == 0xFFFD && fontEntry && fallbackFamily) { mReplacementCharFallbackFamily = fallbackFamily; } // track system fallback time static bool first = true; int32_t intElapsed = int32_t(first ? elapsed.ToMilliseconds() : elapsed.ToMicroseconds()); Telemetry::Accumulate((first ? Telemetry::SYSTEM_FONT_FALLBACK_FIRST : Telemetry::SYSTEM_FONT_FALLBACK), intElapsed); first = false; // track the script for which fallback occurred (incremented one make it // 1-based) Telemetry::Accumulate(Telemetry::SYSTEM_FONT_FALLBACK_SCRIPT, aRunScript + 1); return fontEntry; } PLDHashOperator gfxPlatformFontList::FindFontForCharProc(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void *userArg) { GlobalFontMatch *data = static_cast(userArg); // evaluate all fonts in this family for a match aFamilyEntry->FindFontForChar(data); return PL_DHASH_NEXT; } #define NUM_FALLBACK_FONTS 8 gfxFontEntry* gfxPlatformFontList::CommonFontFallback(const uint32_t aCh, int32_t aRunScript, const gfxFontStyle* aMatchStyle, gfxFontFamily** aMatchedFamily) { nsAutoTArray defaultFallbacks; uint32_t i, numFallbacks; gfxPlatform::GetPlatform()->GetCommonFallbackFonts(aCh, aRunScript, defaultFallbacks); numFallbacks = defaultFallbacks.Length(); for (i = 0; i < numFallbacks; i++) { nsAutoString familyName; const char *fallbackFamily = defaultFallbacks[i]; familyName.AppendASCII(fallbackFamily); gfxFontFamily *fallback = gfxPlatformFontList::PlatformFontList()->FindFamily(familyName); if (!fallback) continue; gfxFontEntry *fontEntry; bool needsBold; // ignored in the system fallback case // use first font in list that supports a given character fontEntry = fallback->FindFontForStyle(*aMatchStyle, needsBold); if (fontEntry && fontEntry->TestCharacterMap(aCh)) { *aMatchedFamily = fallback; return fontEntry; } } return nullptr; } gfxFontEntry* gfxPlatformFontList::GlobalFontFallback(const uint32_t aCh, int32_t aRunScript, const gfxFontStyle* aMatchStyle, uint32_t& aCmapCount, gfxFontFamily** aMatchedFamily) { // otherwise, try to find it among local fonts GlobalFontMatch data(aCh, aRunScript, aMatchStyle); // iterate over all font families to find a font that support the character mFontFamilies.Enumerate(gfxPlatformFontList::FindFontForCharProc, &data); aCmapCount = data.mCmapsTested; *aMatchedFamily = data.mMatchedFamily; return data.mBestMatch; } #ifdef XP_WIN #include // crude hack for using when monitoring process static void LogRegistryEvent(const wchar_t *msg) { HKEY dummyKey; HRESULT hr; wchar_t buf[512]; wsprintfW(buf, L" log %s", msg); hr = RegOpenKeyExW(HKEY_LOCAL_MACHINE, buf, 0, KEY_READ, &dummyKey); if (SUCCEEDED(hr)) { RegCloseKey(dummyKey); } } #endif gfxFontFamily* gfxPlatformFontList::CheckFamily(gfxFontFamily *aFamily) { if (aFamily && !aFamily->HasStyles()) { aFamily->FindStyleVariations(); aFamily->CheckForSimpleFamily(); } if (aFamily && aFamily->GetFontList().Length() == 0) { // failed to load any faces for this family, so discard it nsAutoString key; GenerateFontListKey(aFamily->Name(), key); mFontFamilies.Remove(key); return nullptr; } return aFamily; } gfxFontFamily* gfxPlatformFontList::FindFamily(const nsAString& aFamily) { nsAutoString key; gfxFontFamily *familyEntry; GenerateFontListKey(aFamily, key); NS_ASSERTION(mFontFamilies.Count() != 0, "system font list was not initialized correctly"); // lookup in canonical (i.e. English) family name list if ((familyEntry = mFontFamilies.GetWeak(key))) { return CheckFamily(familyEntry); } // lookup in other family names list (mostly localized names) if ((familyEntry = mOtherFamilyNames.GetWeak(key)) != nullptr) { return CheckFamily(familyEntry); } // name not found and other family names not yet fully initialized so // initialize the rest of the list and try again. this is done lazily // since reading name table entries is expensive. // although ASCII localized family names are possible they don't occur // in practice so avoid pulling in names at startup if (!mOtherFamilyNamesInitialized && !IsASCII(aFamily)) { InitOtherFamilyNames(); if ((familyEntry = mOtherFamilyNames.GetWeak(key)) != nullptr) { return CheckFamily(familyEntry); } else if (!mOtherFamilyNamesInitialized) { // localized family names load timed out, add name to list of // names to check after localized names are loaded if (!mOtherNamesMissed) { mOtherNamesMissed = new nsTHashtable(4); } mOtherNamesMissed->PutEntry(key); } } return nullptr; } gfxFontEntry* gfxPlatformFontList::FindFontForFamily(const nsAString& aFamily, const gfxFontStyle* aStyle, bool& aNeedsBold) { gfxFontFamily *familyEntry = FindFamily(aFamily); aNeedsBold = false; if (familyEntry) return familyEntry->FindFontForStyle(*aStyle, aNeedsBold); return nullptr; } bool gfxPlatformFontList::GetPrefFontFamilyEntries(eFontPrefLang aLangGroup, nsTArray > *array) { return mPrefFonts.Get(uint32_t(aLangGroup), array); } void gfxPlatformFontList::SetPrefFontFamilyEntries(eFontPrefLang aLangGroup, nsTArray >& array) { mPrefFonts.Put(uint32_t(aLangGroup), array); } void gfxPlatformFontList::AddOtherFamilyName(gfxFontFamily *aFamilyEntry, nsAString& aOtherFamilyName) { nsAutoString key; GenerateFontListKey(aOtherFamilyName, key); if (!mOtherFamilyNames.GetWeak(key)) { mOtherFamilyNames.Put(key, aFamilyEntry); #ifdef PR_LOGGING LOG_FONTLIST(("(fontlist-otherfamily) canonical family: %s, " "other family: %s\n", NS_ConvertUTF16toUTF8(aFamilyEntry->Name()).get(), NS_ConvertUTF16toUTF8(aOtherFamilyName).get())); #endif if (mBadUnderlineFamilyNames.Contains(key)) aFamilyEntry->SetBadUnderlineFamily(); } } void gfxPlatformFontList::AddFullname(gfxFontEntry *aFontEntry, nsAString& aFullname) { if (!mExtraNames->mFullnames.GetWeak(aFullname)) { mExtraNames->mFullnames.Put(aFullname, aFontEntry); #ifdef PR_LOGGING LOG_FONTLIST(("(fontlist-fullname) name: %s, fullname: %s\n", NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(), NS_ConvertUTF16toUTF8(aFullname).get())); #endif } } void gfxPlatformFontList::AddPostscriptName(gfxFontEntry *aFontEntry, nsAString& aPostscriptName) { if (!mExtraNames->mPostscriptNames.GetWeak(aPostscriptName)) { mExtraNames->mPostscriptNames.Put(aPostscriptName, aFontEntry); #ifdef PR_LOGGING LOG_FONTLIST(("(fontlist-postscript) name: %s, psname: %s\n", NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(), NS_ConvertUTF16toUTF8(aPostscriptName).get())); #endif } } bool gfxPlatformFontList::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName) { aFamilyName.Truncate(); gfxFontFamily *ff = FindFamily(aFontName); if (!ff) { return false; } aFamilyName.Assign(ff->Name()); return true; } gfxCharacterMap* gfxPlatformFontList::FindCharMap(gfxCharacterMap *aCmap) { aCmap->CalcHash(); gfxCharacterMap *cmap = AddCmap(aCmap); cmap->mShared = true; return cmap; } // add a cmap to the shared cmap set gfxCharacterMap* gfxPlatformFontList::AddCmap(const gfxCharacterMap* aCharMap) { CharMapHashKey *found = mSharedCmaps.PutEntry(const_cast(aCharMap)); return found->GetKey(); } // remove the cmap from the shared cmap set void gfxPlatformFontList::RemoveCmap(const gfxCharacterMap* aCharMap) { // skip lookups during teardown if (mSharedCmaps.Count() == 0) { return; } // cmap needs to match the entry *and* be the same ptr before removing CharMapHashKey *found = mSharedCmaps.GetEntry(const_cast(aCharMap)); if (found && found->GetKey() == aCharMap) { mSharedCmaps.RemoveEntry(const_cast(aCharMap)); } } static PLDHashOperator AppendFamilyToList(nsStringHashKey::KeyType aKey, nsRefPtr& aFamilyEntry, void *aUserArg) { nsTArray *familyNames = static_cast *>(aUserArg); familyNames->AppendElement(aFamilyEntry->Name()); return PL_DHASH_NEXT; } void gfxPlatformFontList::GetFontFamilyNames(nsTArray& aFontFamilyNames) { mFontFamilies.Enumerate(AppendFamilyToList, &aFontFamilyNames); } void gfxPlatformFontList::InitLoader() { GetFontFamilyNames(mFontInfo->mFontFamiliesToLoad); mStartIndex = 0; mNumFamilies = mFontInfo->mFontFamiliesToLoad.Length(); memset(&(mFontInfo->mLoadStats), 0, sizeof(mFontInfo->mLoadStats)); } #define FONT_LOADER_MAX_TIMESLICE 100 // max time for one pass through RunLoader = 100ms bool gfxPlatformFontList::LoadFontInfo() { TimeStamp start = TimeStamp::Now(); uint32_t i, endIndex = mNumFamilies; bool loadCmaps = !UsesSystemFallback() || gfxPlatform::GetPlatform()->UseCmapsDuringSystemFallback(); // for each font family, load in various font info for (i = mStartIndex; i < endIndex; i++) { nsAutoString key; gfxFontFamily *familyEntry; GenerateFontListKey(mFontInfo->mFontFamiliesToLoad[i], key); // lookup in canonical (i.e. English) family name list if (!(familyEntry = mFontFamilies.GetWeak(key))) { continue; } // read in face names familyEntry->ReadFaceNames(this, NeedFullnamePostscriptNames(), mFontInfo); // load the cmaps if needed if (loadCmaps) { familyEntry->ReadAllCMAPs(mFontInfo); } // limit the time spent reading fonts in one pass TimeDuration elapsed = TimeStamp::Now() - start; if (elapsed.ToMilliseconds() > FONT_LOADER_MAX_TIMESLICE && i + 1 != endIndex) { endIndex = i + 1; break; } } mStartIndex = endIndex; bool done = mStartIndex >= mNumFamilies; #ifdef PR_LOGGING if (LOG_FONTINIT_ENABLED()) { TimeDuration elapsed = TimeStamp::Now() - start; LOG_FONTINIT(("(fontinit) fontloader load pass %8.2f ms done %s\n", elapsed.ToMilliseconds(), (done ? "true" : "false"))); } #endif if (done) { mOtherFamilyNamesInitialized = true; mFaceNameListsInitialized = true; } return done; } struct LookupMissedFaceNamesData { LookupMissedFaceNamesData(gfxPlatformFontList *aFontList) : mFontList(aFontList), mFoundName(false) {} gfxPlatformFontList *mFontList; bool mFoundName; }; /*static*/ PLDHashOperator gfxPlatformFontList::LookupMissedFaceNamesProc(nsStringHashKey *aKey, void *aUserArg) { LookupMissedFaceNamesData *data = reinterpret_cast(aUserArg); if (data->mFontList->FindFaceName(aKey->GetKey())) { data->mFoundName = true; return PL_DHASH_STOP; } return PL_DHASH_NEXT; } struct LookupMissedOtherNamesData { LookupMissedOtherNamesData(gfxPlatformFontList *aFontList) : mFontList(aFontList), mFoundName(false) {} gfxPlatformFontList *mFontList; bool mFoundName; }; /*static*/ PLDHashOperator gfxPlatformFontList::LookupMissedOtherNamesProc(nsStringHashKey *aKey, void *aUserArg) { LookupMissedOtherNamesData *data = reinterpret_cast(aUserArg); if (data->mFontList->FindFamily(aKey->GetKey())) { data->mFoundName = true; return PL_DHASH_STOP; } return PL_DHASH_NEXT; } void gfxPlatformFontList::CleanupLoader() { mFontFamiliesToLoad.Clear(); mNumFamilies = 0; bool rebuilt = false, forceReflow = false; // if had missed face names that are now available, force reflow all if (mFaceNamesMissed && mFaceNamesMissed->Count() != 0) { LookupMissedFaceNamesData namedata(this); mFaceNamesMissed->EnumerateEntries(LookupMissedFaceNamesProc, &namedata); if (namedata.mFoundName) { rebuilt = true; mUserFontSetList.EnumerateEntries(RebuildLocalFonts, nullptr); } mFaceNamesMissed = nullptr; } if (mOtherNamesMissed) { LookupMissedOtherNamesData othernamesdata(this); mOtherNamesMissed->EnumerateEntries(LookupMissedOtherNamesProc, &othernamesdata); mOtherNamesMissed = nullptr; if (othernamesdata.mFoundName) { forceReflow = true; ForceGlobalReflow(); } } #ifdef PR_LOGGING if (LOG_FONTINIT_ENABLED() && mFontInfo) { LOG_FONTINIT(("(fontinit) fontloader load thread took %8.2f ms " "%d families %d fonts %d cmaps " "%d facenames %d othernames %s %s", mLoadTime.ToMilliseconds(), mFontInfo->mLoadStats.families, mFontInfo->mLoadStats.fonts, mFontInfo->mLoadStats.cmaps, mFontInfo->mLoadStats.facenames, mFontInfo->mLoadStats.othernames, (rebuilt ? "(userfont sets rebuilt)" : ""), (forceReflow ? "(global reflow)" : ""))); } #endif gfxFontInfoLoader::CleanupLoader(); } void gfxPlatformFontList::GetPrefsAndStartLoader() { mIncrement = std::max(1u, Preferences::GetUint(FONT_LOADER_FAMILIES_PER_SLICE_PREF)); uint32_t delay = std::max(1u, Preferences::GetUint(FONT_LOADER_DELAY_PREF)); uint32_t interval = std::max(1u, Preferences::GetUint(FONT_LOADER_INTERVAL_PREF)); StartLoader(delay, interval); } void gfxPlatformFontList::ForceGlobalReflow() { // modify a preference that will trigger reflow everywhere static const char kPrefName[] = "font.internaluseonly.changed"; bool fontInternalChange = Preferences::GetBool(kPrefName, false); Preferences::SetBool(kPrefName, !fontInternalChange); } // Support for memory reporting static size_t SizeOfFamilyEntryExcludingThis(const nsAString& aKey, const nsRefPtr& aFamily, MallocSizeOf aMallocSizeOf, void* aUserArg) { FontListSizes *sizes = static_cast(aUserArg); aFamily->AddSizeOfExcludingThis(aMallocSizeOf, sizes); sizes->mFontListSize += aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf); // we return zero here because the measurements have been added directly // to the relevant fields of the FontListSizes record return 0; } // this is also used by subclasses that hold additional hashes of family names /*static*/ size_t gfxPlatformFontList::SizeOfFamilyNameEntryExcludingThis (const nsAString& aKey, const nsRefPtr& aFamily, MallocSizeOf aMallocSizeOf, void* aUserArg) { // we don't count the size of the family here, because this is an *extra* // reference to a family that will have already been counted in the main list return aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf); } static size_t SizeOfFontNameEntryExcludingThis(const nsAString& aKey, const nsRefPtr& aFont, MallocSizeOf aMallocSizeOf, void* aUserArg) { // the font itself is counted by its owning family; here we only care about // the name stored in the hashtable key return aKey.SizeOfExcludingThisIfUnshared(aMallocSizeOf); } static size_t SizeOfPrefFontEntryExcludingThis (const uint32_t& aKey, const nsTArray >& aList, MallocSizeOf aMallocSizeOf, void* aUserArg) { // again, we only care about the size of the array itself; we don't follow // the refPtrs stored in it, because they point to entries already owned // and accounted-for by the main font list return aList.SizeOfExcludingThis(aMallocSizeOf); } static size_t SizeOfStringEntryExcludingThis(nsStringHashKey* aHashEntry, MallocSizeOf aMallocSizeOf, void* aUserArg) { return aHashEntry->GetKey().SizeOfExcludingThisIfUnshared(aMallocSizeOf); } static size_t SizeOfSharedCmapExcludingThis(CharMapHashKey* aHashEntry, MallocSizeOf aMallocSizeOf, void* aUserArg) { FontListSizes *sizes = static_cast(aUserArg); uint32_t size = aHashEntry->GetKey()->SizeOfIncludingThis(aMallocSizeOf); sizes->mCharMapsSize += size; // we return zero here because the measurements have been added directly // to the relevant fields of the FontListSizes record return 0; } void gfxPlatformFontList::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { aSizes->mFontListSize += mFontFamilies.SizeOfExcludingThis(SizeOfFamilyEntryExcludingThis, aMallocSizeOf, aSizes); aSizes->mFontListSize += mOtherFamilyNames.SizeOfExcludingThis(SizeOfFamilyNameEntryExcludingThis, aMallocSizeOf); if (mExtraNames) { aSizes->mFontListSize += mExtraNames->mFullnames.SizeOfExcludingThis(SizeOfFontNameEntryExcludingThis, aMallocSizeOf); aSizes->mFontListSize += mExtraNames->mPostscriptNames.SizeOfExcludingThis(SizeOfFontNameEntryExcludingThis, aMallocSizeOf); } aSizes->mFontListSize += mCodepointsWithNoFonts.SizeOfExcludingThis(aMallocSizeOf); aSizes->mFontListSize += mFontFamiliesToLoad.SizeOfExcludingThis(aMallocSizeOf); aSizes->mFontListSize += mPrefFonts.SizeOfExcludingThis(SizeOfPrefFontEntryExcludingThis, aMallocSizeOf); aSizes->mFontListSize += mBadUnderlineFamilyNames.SizeOfExcludingThis(SizeOfStringEntryExcludingThis, aMallocSizeOf); aSizes->mFontListSize += mSharedCmaps.SizeOfExcludingThis(SizeOfSharedCmapExcludingThis, aMallocSizeOf, aSizes); } void gfxPlatformFontList::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { aSizes->mFontListSize += aMallocSizeOf(this); AddSizeOfExcludingThis(aMallocSizeOf, aSizes); }