/* -*- 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/. */ #include "mozilla/Logging.h" #include "gfxPlatformFontList.h" #include "gfxTextRun.h" #include "gfxUserFontSet.h" #include "nsCRT.h" #include "nsGkAtoms.h" #include "nsILocaleService.h" #include "nsServiceManagerUtils.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" #include <locale.h> using namespace mozilla; #define LOG_FONTLIST(args) MOZ_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), \ LogLevel::Debug, args) #define LOG_FONTLIST_ENABLED() MOZ_LOG_TEST( \ gfxPlatform::GetLog(eGfxLog_fontlist), \ LogLevel::Debug) #define LOG_FONTINIT(args) MOZ_LOG(gfxPlatform::GetLog(eGfxLog_fontinit), \ LogLevel::Debug, args) #define LOG_FONTINIT_ENABLED() MOZ_LOG_TEST( \ gfxPlatform::GetLog(eGfxLog_fontinit), \ LogLevel::Debug) 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 }; static const char kFontSystemWhitelistPref[] = "font.system.whitelist"; // xxx - this can probably be eliminated by reworking pref font handling code static const char *gPrefLangNames[] = { #define FONT_PREF_LANG(enum_id_, str_, atom_id_) str_ #include "gfxFontPrefLangList.h" #undef FONT_PREF_LANG }; static_assert(MOZ_ARRAY_LENGTH(gPrefLangNames) == uint32_t(eFontPrefLang_Count), "size of pref lang name array doesn't match pref lang enum size"); class gfxFontListPrefObserver 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()->ClearLangGroupPrefFonts(); gfxFontCache::GetCache()->AgeAllGenerations(); return NS_OK; } MOZ_DEFINE_MALLOC_SIZE_OF(FontListMallocSizeOf) NS_IMPL_ISUPPORTS(gfxPlatformFontList::MemoryReporter, nsIMemoryReporter) NS_IMETHODIMP gfxPlatformFontList::MemoryReporter::CollectReports( nsIHandleReportCallback* aHandleReport, nsISupports* aData, bool aAnonymize) { FontListSizes sizes; sizes.mFontListSize = 0; sizes.mFontTableCacheSize = 0; sizes.mCharMapsSize = 0; gfxPlatformFontList::PlatformFontList()->AddSizeOfIncludingThis(&FontListMallocSizeOf, &sizes); MOZ_COLLECT_REPORT( "explicit/gfx/font-list", KIND_HEAP, UNITS_BYTES, sizes.mFontListSize, "Memory used to manage the list of font families and faces."); MOZ_COLLECT_REPORT( "explicit/gfx/font-charmaps", KIND_HEAP, UNITS_BYTES, sizes.mCharMapsSize, "Memory used to record the character coverage of individual fonts."); if (sizes.mFontTableCacheSize) { MOZ_COLLECT_REPORT( "explicit/gfx/font-tables", KIND_HEAP, UNITS_BYTES, sizes.mFontTableCacheSize, "Memory used for cached font metrics and layout tables."); } return NS_OK; } gfxPlatformFontList::gfxPlatformFontList(bool aNeedFullnamePostscriptNames) : mFontFamilies(64), mOtherFamilyNames(16), mBadUnderlineFamilyNames(8), mSharedCmaps(8), mStartIndex(0), mIncrement(1), mNumFamilies(0), mFontlistInitCount(0), mFontFamilyWhitelistActive(false) { mOtherFamilyNamesInitialized = false; if (aNeedFullnamePostscriptNames) { mExtraNames = MakeUnique<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); Preferences::RegisterCallback(FontWhitelistPrefChanged, kFontSystemWhitelistPref); RegisterStrongMemoryReporter(new MemoryReporter()); } gfxPlatformFontList::~gfxPlatformFontList() { mSharedCmaps.Clear(); ClearLangGroupPrefFonts(); NS_ASSERTION(gFontListPrefObserver, "There is no font list pref observer"); Preferences::RemoveObservers(gFontListPrefObserver, kObservedPrefs); Preferences::UnregisterCallback(FontWhitelistPrefChanged, kFontSystemWhitelistPref); NS_RELEASE(gFontListPrefObserver); } // number of CSS generic font families const uint32_t kNumGenerics = 5; void gfxPlatformFontList::ApplyWhitelist() { nsTArray<nsString> list; gfxFontUtils::GetPrefsFontList(kFontSystemWhitelistPref, list); uint32_t numFonts = list.Length(); mFontFamilyWhitelistActive = (numFonts > 0); if (!mFontFamilyWhitelistActive) { return; } nsTHashtable<nsStringHashKey> familyNamesWhitelist; for (uint32_t i = 0; i < numFonts; i++) { nsString key; ToLowerCase(list[i], key); familyNamesWhitelist.PutEntry(key); } for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { // Don't continue if we only have one font left. if (mFontFamilies.Count() == 1) { break; } nsString fontFamilyName(iter.Key()); ToLowerCase(fontFamilyName); if (!familyNamesWhitelist.Contains(fontFamilyName)) { iter.Remove(); } } } nsresult gfxPlatformFontList::InitFontList() { mFontlistInitCount++; if (LOG_FONTINIT_ENABLED()) { LOG_FONTINIT(("(fontinit) system fontlist initialization\n")); } // rebuilding fontlist so clear out font/word caches gfxFontCache *fontCache = gfxFontCache::GetCache(); if (fontCache) { fontCache->AgeAllGenerations(); fontCache->FlushShapedWordCaches(); } gfxPlatform::PurgeSkiaFontCache(); mFontFamilies.Clear(); mOtherFamilyNames.Clear(); mOtherFamilyNamesInitialized = false; if (mExtraNames) { mExtraNames->mFullnames.Clear(); mExtraNames->mPostscriptNames.Clear(); } mFaceNameListsInitialized = false; ClearLangGroupPrefFonts(); 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; nsresult rv = InitFontListForPlatform(); if (NS_FAILED(rv)) { return rv; } ApplyWhitelist(); return NS_OK; } void gfxPlatformFontList::GenerateFontListKey(const nsAString& aKeyName, nsAString& aResult) { aResult = aKeyName; ToLowerCase(aResult); } #define OTHERNAMES_TIMEOUT 200 void gfxPlatformFontList::InitOtherFamilyNames() { if (mOtherFamilyNamesInitialized) { return; } TimeStamp start = TimeStamp::Now(); bool timedOut = false; for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { RefPtr<gfxFontFamily>& family = iter.Data(); family->ReadOtherFamilyNames(this); TimeDuration elapsed = TimeStamp::Now() - start; if (elapsed.ToMilliseconds() > OTHERNAMES_TIMEOUT) { timedOut = true; break; } } if (!timedOut) { mOtherFamilyNamesInitialized = true; } TimeStamp end = TimeStamp::Now(); Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITOTHERFAMILYNAMES, start, end); if (LOG_FONTINIT_ENABLED()) { TimeDuration elapsed = end - start; LOG_FONTINIT(("(fontinit) InitOtherFamilyNames took %8.2f ms %s", elapsed.ToMilliseconds(), (timedOut ? "timeout" : ""))); } } // time limit for loading facename lists (ms) #define NAMELIST_TIMEOUT 200 gfxFontEntry* gfxPlatformFontList::SearchFamiliesForFaceName(const nsAString& aFaceName) { TimeStamp start = TimeStamp::Now(); bool timedOut = false; // if mFirstChar is not 0, only load facenames for families // that start with this character char16_t firstChar = 0; gfxFontEntry *lookup = nullptr; // iterate over familes starting with the same letter firstChar = ToLowerCase(aFaceName.CharAt(0)); for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { nsStringHashKey::KeyType key = iter.Key(); RefPtr<gfxFontFamily>& family = iter.Data(); // when filtering, skip names that don't start with the filter character if (firstChar && ToLowerCase(key.CharAt(0)) != firstChar) { continue; } family->ReadFaceNames(this, NeedFullnamePostscriptNames()); TimeDuration elapsed = TimeStamp::Now() - start; if (elapsed.ToMilliseconds() > NAMELIST_TIMEOUT) { timedOut = true; break; } } lookup = FindFaceName(aFaceName); TimeStamp end = TimeStamp::Now(); Telemetry::AccumulateTimeDelta(Telemetry::FONTLIST_INITFACENAMELISTS, start, end); if (LOG_FONTINIT_ENABLED()) { TimeDuration elapsed = end - start; LOG_FONTINIT(("(fontinit) SearchFamiliesForFaceName took %8.2f ms %s %s", elapsed.ToMilliseconds(), (lookup ? "found name" : ""), (timedOut ? "timeout" : ""))); } return lookup; } 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 = MakeUnique<nsTHashtable<nsStringHashKey>>(2); } mFaceNamesMissed->PutEntry(aFaceName); } } return lookup; } void gfxPlatformFontList::PreloadNamesList() { AutoTArray<nsString, 10> 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() { AutoTArray<nsString, 10> 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); } } void gfxPlatformFontList::UpdateFontList() { InitFontList(); RebuildLocalFonts(); } void gfxPlatformFontList::GetFontList(nsIAtom *aLangGroup, const nsACString& aGenericFamily, nsTArray<nsString>& aListOfFonts) { for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { RefPtr<gfxFontFamily>& family = iter.Data(); // 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 = aLangGroup; bool needsBold; RefPtr<gfxFontEntry> fontEntry = family->FindFontForStyle(style, needsBold); NS_ASSERTION(fontEntry, "couldn't find any font entry in family"); if (!fontEntry) { continue; } /* skip symbol fonts */ if (fontEntry->IsSymbolFont()) { continue; } if (fontEntry->SupportsLangGroup(aLangGroup) && fontEntry->MatchesGenericFamily(aGenericFamily)) { nsAutoString localizedFamilyName; family->LocalizedName(localizedFamilyName); aListOfFonts.AppendElement(localizedFamilyName); } } aListOfFonts.Sort(); aListOfFonts.Compact(); } void gfxPlatformFontList::GetFontFamilyList(nsTArray<RefPtr<gfxFontFamily> >& aFamilyArray) { for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { RefPtr<gfxFontFamily>& family = iter.Data(); aFamilyArray.AppendElement(family); } } gfxFontEntry* gfxPlatformFontList::SystemFindFontForChar(uint32_t aCh, uint32_t aNextCh, Script 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->HasCharacter(aCh)) { return fontEntry; } } TimeStamp start = TimeStamp::Now(); // search commonly available fonts bool common = true; gfxFontFamily *fallbackFamily = nullptr; fontEntry = CommonFontFallback(aCh, aNextCh, 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; LogModule* log = gfxPlatform::GetLog(eGfxLog_textrun); if (MOZ_UNLIKELY(MOZ_LOG_TEST(log, LogLevel::Warning))) { uint32_t unicodeRange = FindCharUnicodeRange(aCh); Script script = mozilla::unicode::GetScriptCode(aCh); MOZ_LOG(log, LogLevel::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() : "<none>"), int32_t(elapsed.ToMicroseconds()), cmapCount)); } // 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, int(aRunScript) + 1); return fontEntry; } #define NUM_FALLBACK_FONTS 8 gfxFontEntry* gfxPlatformFontList::CommonFontFallback(uint32_t aCh, uint32_t aNextCh, Script aRunScript, const gfxFontStyle* aMatchStyle, gfxFontFamily** aMatchedFamily) { AutoTArray<const char*,NUM_FALLBACK_FONTS> defaultFallbacks; uint32_t i, numFallbacks; gfxPlatform::GetPlatform()->GetCommonFallbackFonts(aCh, aNextCh, aRunScript, defaultFallbacks); numFallbacks = defaultFallbacks.Length(); for (i = 0; i < numFallbacks; i++) { nsAutoString familyName; const char *fallbackFamily = defaultFallbacks[i]; familyName.AppendASCII(fallbackFamily); gfxFontFamily *fallback = FindFamilyByCanonicalName(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->HasCharacter(aCh)) { *aMatchedFamily = fallback; return fontEntry; } } return nullptr; } gfxFontEntry* gfxPlatformFontList::GlobalFontFallback(const uint32_t aCh, Script aRunScript, const gfxFontStyle* aMatchStyle, uint32_t& aCmapCount, gfxFontFamily** aMatchedFamily) { bool useCmaps = IsFontFamilyWhitelistActive() || gfxPlatform::GetPlatform()->UseCmapsDuringSystemFallback(); if (!useCmaps) { // Allow platform-specific fallback code to try and find a usable font gfxFontEntry* fe = PlatformGlobalFontFallback(aCh, aRunScript, aMatchStyle, aMatchedFamily); if (fe) { return fe; } } // 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 for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { RefPtr<gfxFontFamily>& family = iter.Data(); // evaluate all fonts in this family for a match family->FindFontForChar(&data); } aCmapCount = data.mCmapsTested; *aMatchedFamily = data.mMatchedFamily; return data.mBestMatch; } 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; } bool gfxPlatformFontList::FindAndAddFamilies(const nsAString& aFamily, nsTArray<gfxFontFamily*>* aOutput, gfxFontStyle* aStyle, gfxFloat aDevToCssSize) { nsAutoString key; GenerateFontListKey(aFamily, key); NS_ASSERTION(mFontFamilies.Count() != 0, "system font list was not initialized correctly"); // lookup in canonical (i.e. English) family name list gfxFontFamily *familyEntry = mFontFamilies.GetWeak(key); // if not found, lookup in other family names list (mostly localized names) if (!familyEntry) { familyEntry = mOtherFamilyNames.GetWeak(key); } // if still not found and other family names not yet fully initialized, // 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 (!familyEntry && !mOtherFamilyNamesInitialized && !IsASCII(aFamily)) { InitOtherFamilyNames(); familyEntry = mOtherFamilyNames.GetWeak(key); if (!familyEntry && !mOtherFamilyNamesInitialized) { // localized family names load timed out, add name to list of // names to check after localized names are loaded if (!mOtherNamesMissed) { mOtherNamesMissed = MakeUnique<nsTHashtable<nsStringHashKey>>(2); } mOtherNamesMissed->PutEntry(key); } } familyEntry = CheckFamily(familyEntry); if (familyEntry) { aOutput->AppendElement(familyEntry); return true; } return false; } 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; } void gfxPlatformFontList::AddOtherFamilyName(gfxFontFamily *aFamilyEntry, nsAString& aOtherFamilyName) { nsAutoString key; GenerateFontListKey(aOtherFamilyName, key); if (!mOtherFamilyNames.GetWeak(key)) { mOtherFamilyNames.Put(key, aFamilyEntry); LOG_FONTLIST(("(fontlist-otherfamily) canonical family: %s, " "other family: %s\n", NS_ConvertUTF16toUTF8(aFamilyEntry->Name()).get(), NS_ConvertUTF16toUTF8(aOtherFamilyName).get())); if (mBadUnderlineFamilyNames.Contains(key)) aFamilyEntry->SetBadUnderlineFamily(); } } void gfxPlatformFontList::AddFullname(gfxFontEntry *aFontEntry, nsAString& aFullname) { if (!mExtraNames->mFullnames.GetWeak(aFullname)) { mExtraNames->mFullnames.Put(aFullname, aFontEntry); LOG_FONTLIST(("(fontlist-fullname) name: %s, fullname: %s\n", NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(), NS_ConvertUTF16toUTF8(aFullname).get())); } } void gfxPlatformFontList::AddPostscriptName(gfxFontEntry *aFontEntry, nsAString& aPostscriptName) { if (!mExtraNames->mPostscriptNames.GetWeak(aPostscriptName)) { mExtraNames->mPostscriptNames.Put(aPostscriptName, aFontEntry); LOG_FONTLIST(("(fontlist-postscript) name: %s, psname: %s\n", NS_ConvertUTF16toUTF8(aFontEntry->Name()).get(), NS_ConvertUTF16toUTF8(aPostscriptName).get())); } } 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<gfxCharacterMap*>(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<gfxCharacterMap*>(aCharMap)); if (found && found->GetKey() == aCharMap) { mSharedCmaps.RemoveEntry(const_cast<gfxCharacterMap*>(aCharMap)); } } void gfxPlatformFontList::ResolveGenericFontNames( FontFamilyType aGenericType, eFontPrefLang aPrefLang, nsTArray<RefPtr<gfxFontFamily>>* aGenericFamilies) { const char* langGroupStr = GetPrefLangName(aPrefLang); const char* generic = GetGenericName(aGenericType); if (!generic) { return; } AutoTArray<nsString,4> genericFamilies; // load family for "font.name.generic.lang" nsAutoCString prefFontName("font.name."); prefFontName.Append(generic); prefFontName.Append('.'); prefFontName.Append(langGroupStr); gfxFontUtils::AppendPrefsFontList(prefFontName.get(), genericFamilies); // load fonts for "font.name-list.generic.lang" nsAutoCString prefFontListName("font.name-list."); prefFontListName.Append(generic); prefFontListName.Append('.'); prefFontListName.Append(langGroupStr); gfxFontUtils::AppendPrefsFontList(prefFontListName.get(), genericFamilies); nsIAtom* langGroup = GetLangGroupForPrefLang(aPrefLang); NS_ASSERTION(langGroup, "null lang group for pref lang"); gfxPlatformFontList::GetFontFamiliesFromGenericFamilies(genericFamilies, langGroup, aGenericFamilies); #if 0 // dump out generic mappings printf("%s ===> ", prefFontName.get()); for (uint32_t k = 0; k < aGenericFamilies->Length(); k++) { if (k > 0) printf(", "); printf("%s", NS_ConvertUTF16toUTF8(aGenericFamilies[k]->Name()).get()); } printf("\n"); #endif } void gfxPlatformFontList::ResolveEmojiFontNames( nsTArray<RefPtr<gfxFontFamily>>* aGenericFamilies) { // emoji preference has no lang name AutoTArray<nsString,4> genericFamilies; nsAutoCString prefFontListName("font.name-list.emoji"); gfxFontUtils::AppendPrefsFontList(prefFontListName.get(), genericFamilies); gfxPlatformFontList::GetFontFamiliesFromGenericFamilies(genericFamilies, nullptr, aGenericFamilies); } void gfxPlatformFontList::GetFontFamiliesFromGenericFamilies( nsTArray<nsString>& aGenericNameFamilies, nsIAtom* aLangGroup, nsTArray<RefPtr<gfxFontFamily>>* aGenericFamilies) { // lookup and add platform fonts uniquely for (const nsString& genericFamily : aGenericNameFamilies) { gfxFontStyle style; style.language = aLangGroup; style.systemFont = false; AutoTArray<gfxFontFamily*,10> families; FindAndAddFamilies(genericFamily, &families, &style, 1.0); for (gfxFontFamily* f : families) { if (!aGenericFamilies->Contains(f)) { aGenericFamilies->AppendElement(f); } } } } nsTArray<RefPtr<gfxFontFamily>>* gfxPlatformFontList::GetPrefFontsLangGroup(mozilla::FontFamilyType aGenericType, eFontPrefLang aPrefLang) { // treat -moz-fixed as monospace if (aGenericType == eFamily_moz_fixed) { aGenericType = eFamily_monospace; } if (aGenericType == eFamily_moz_emoji) { // Emoji font has no lang PrefFontList* prefFonts = mEmojiPrefFont.get(); if (MOZ_UNLIKELY(!prefFonts)) { prefFonts = new PrefFontList; ResolveEmojiFontNames(prefFonts); mEmojiPrefFont.reset(prefFonts); } return prefFonts; } PrefFontList* prefFonts = mLangGroupPrefFonts[aPrefLang][aGenericType].get(); if (MOZ_UNLIKELY(!prefFonts)) { prefFonts = new PrefFontList; ResolveGenericFontNames(aGenericType, aPrefLang, prefFonts); mLangGroupPrefFonts[aPrefLang][aGenericType].reset(prefFonts); } return prefFonts; } void gfxPlatformFontList::AddGenericFonts(mozilla::FontFamilyType aGenericType, nsIAtom* aLanguage, nsTArray<gfxFontFamily*>& aFamilyList) { // map lang ==> langGroup nsIAtom* langGroup = GetLangGroup(aLanguage); // langGroup ==> prefLang eFontPrefLang prefLang = GetFontPrefLangFor(langGroup); // lookup pref fonts nsTArray<RefPtr<gfxFontFamily>>* prefFonts = GetPrefFontsLangGroup(aGenericType, prefLang); if (!prefFonts->IsEmpty()) { aFamilyList.AppendElements(*prefFonts); } } static nsIAtom* PrefLangToLangGroups(uint32_t aIndex) { // static array here avoids static constructor static nsIAtom* gPrefLangToLangGroups[] = { #define FONT_PREF_LANG(enum_id_, str_, atom_id_) nsGkAtoms::atom_id_ #include "gfxFontPrefLangList.h" #undef FONT_PREF_LANG }; return aIndex < ArrayLength(gPrefLangToLangGroups) ? gPrefLangToLangGroups[aIndex] : nsGkAtoms::Unicode; } eFontPrefLang gfxPlatformFontList::GetFontPrefLangFor(const char* aLang) { if (!aLang || !aLang[0]) { return eFontPrefLang_Others; } for (uint32_t i = 0; i < ArrayLength(gPrefLangNames); ++i) { if (!PL_strcasecmp(gPrefLangNames[i], aLang)) { return eFontPrefLang(i); } } return eFontPrefLang_Others; } eFontPrefLang gfxPlatformFontList::GetFontPrefLangFor(nsIAtom *aLang) { if (!aLang) return eFontPrefLang_Others; nsAutoCString lang; aLang->ToUTF8String(lang); return GetFontPrefLangFor(lang.get()); } nsIAtom* gfxPlatformFontList::GetLangGroupForPrefLang(eFontPrefLang aLang) { // the special CJK set pref lang should be resolved into separate // calls to individual CJK pref langs before getting here NS_ASSERTION(aLang != eFontPrefLang_CJKSet, "unresolved CJK set pref lang"); return PrefLangToLangGroups(uint32_t(aLang)); } const char* gfxPlatformFontList::GetPrefLangName(eFontPrefLang aLang) { if (uint32_t(aLang) < ArrayLength(gPrefLangNames)) { return gPrefLangNames[uint32_t(aLang)]; } return nullptr; } eFontPrefLang gfxPlatformFontList::GetFontPrefLangFor(uint8_t aUnicodeRange) { switch (aUnicodeRange) { case kRangeSetLatin: return eFontPrefLang_Western; case kRangeCyrillic: return eFontPrefLang_Cyrillic; case kRangeGreek: return eFontPrefLang_Greek; case kRangeHebrew: return eFontPrefLang_Hebrew; case kRangeArabic: return eFontPrefLang_Arabic; case kRangeThai: return eFontPrefLang_Thai; case kRangeKorean: return eFontPrefLang_Korean; case kRangeJapanese: return eFontPrefLang_Japanese; case kRangeSChinese: return eFontPrefLang_ChineseCN; case kRangeTChinese: return eFontPrefLang_ChineseTW; case kRangeDevanagari: return eFontPrefLang_Devanagari; case kRangeTamil: return eFontPrefLang_Tamil; case kRangeArmenian: return eFontPrefLang_Armenian; case kRangeBengali: return eFontPrefLang_Bengali; case kRangeCanadian: return eFontPrefLang_Canadian; case kRangeEthiopic: return eFontPrefLang_Ethiopic; case kRangeGeorgian: return eFontPrefLang_Georgian; case kRangeGujarati: return eFontPrefLang_Gujarati; case kRangeGurmukhi: return eFontPrefLang_Gurmukhi; case kRangeKhmer: return eFontPrefLang_Khmer; case kRangeMalayalam: return eFontPrefLang_Malayalam; case kRangeOriya: return eFontPrefLang_Oriya; case kRangeTelugu: return eFontPrefLang_Telugu; case kRangeKannada: return eFontPrefLang_Kannada; case kRangeSinhala: return eFontPrefLang_Sinhala; case kRangeTibetan: return eFontPrefLang_Tibetan; case kRangeSetCJK: return eFontPrefLang_CJKSet; default: return eFontPrefLang_Others; } } bool gfxPlatformFontList::IsLangCJK(eFontPrefLang aLang) { switch (aLang) { case eFontPrefLang_Japanese: case eFontPrefLang_ChineseTW: case eFontPrefLang_ChineseCN: case eFontPrefLang_ChineseHK: case eFontPrefLang_Korean: case eFontPrefLang_CJKSet: return true; default: return false; } } void gfxPlatformFontList::GetLangPrefs(eFontPrefLang aPrefLangs[], uint32_t &aLen, eFontPrefLang aCharLang, eFontPrefLang aPageLang) { if (IsLangCJK(aCharLang)) { AppendCJKPrefLangs(aPrefLangs, aLen, aCharLang, aPageLang); } else { AppendPrefLang(aPrefLangs, aLen, aCharLang); } AppendPrefLang(aPrefLangs, aLen, eFontPrefLang_Others); } void gfxPlatformFontList::AppendCJKPrefLangs(eFontPrefLang aPrefLangs[], uint32_t &aLen, eFontPrefLang aCharLang, eFontPrefLang aPageLang) { // prefer the lang specified by the page *if* CJK if (IsLangCJK(aPageLang)) { AppendPrefLang(aPrefLangs, aLen, aPageLang); } // if not set up, set up the default CJK order, based on accept lang settings and locale if (mCJKPrefLangs.Length() == 0) { // temp array eFontPrefLang tempPrefLangs[kMaxLenPrefLangList]; uint32_t tempLen = 0; // Add the CJK pref fonts from accept languages, the order should be same order nsAdoptingCString list = Preferences::GetLocalizedCString("intl.accept_languages"); if (!list.IsEmpty()) { const char kComma = ','; const char *p, *p_end; list.BeginReading(p); list.EndReading(p_end); while (p < p_end) { while (nsCRT::IsAsciiSpace(*p)) { if (++p == p_end) break; } if (p == p_end) break; const char *start = p; while (++p != p_end && *p != kComma) /* nothing */ ; nsAutoCString lang(Substring(start, p)); lang.CompressWhitespace(false, true); eFontPrefLang fpl = gfxPlatformFontList::GetFontPrefLangFor(lang.get()); switch (fpl) { case eFontPrefLang_Japanese: case eFontPrefLang_Korean: case eFontPrefLang_ChineseCN: case eFontPrefLang_ChineseHK: case eFontPrefLang_ChineseTW: AppendPrefLang(tempPrefLangs, tempLen, fpl); break; default: break; } p++; } } do { // to allow 'break' to abort this block if a call fails nsresult rv; nsCOMPtr<nsILocaleService> ls = do_GetService(NS_LOCALESERVICE_CONTRACTID, &rv); if (NS_FAILED(rv)) break; nsCOMPtr<nsILocale> appLocale; rv = ls->GetApplicationLocale(getter_AddRefs(appLocale)); if (NS_FAILED(rv)) break; nsString localeStr; rv = appLocale-> GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), localeStr); if (NS_FAILED(rv)) break; const nsAString& lang = Substring(localeStr, 0, 2); if (lang.EqualsLiteral("ja")) { AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Japanese); } else if (lang.EqualsLiteral("zh")) { const nsAString& region = Substring(localeStr, 3, 2); if (region.EqualsLiteral("CN")) { AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseCN); } else if (region.EqualsLiteral("TW")) { AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseTW); } else if (region.EqualsLiteral("HK")) { AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseHK); } } else if (lang.EqualsLiteral("ko")) { AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Korean); } } while (0); // last resort... (the order is same as old gfx.) AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Japanese); AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_Korean); AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseCN); AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseHK); AppendPrefLang(tempPrefLangs, tempLen, eFontPrefLang_ChineseTW); // copy into the cached array uint32_t j; for (j = 0; j < tempLen; j++) { mCJKPrefLangs.AppendElement(tempPrefLangs[j]); } } // append in cached CJK langs uint32_t i, numCJKlangs = mCJKPrefLangs.Length(); for (i = 0; i < numCJKlangs; i++) { AppendPrefLang(aPrefLangs, aLen, (eFontPrefLang) (mCJKPrefLangs[i])); } } void gfxPlatformFontList::AppendPrefLang(eFontPrefLang aPrefLangs[], uint32_t& aLen, eFontPrefLang aAddLang) { if (aLen >= kMaxLenPrefLangList) return; // make sure uint32_t i = 0; while (i < aLen && aPrefLangs[i] != aAddLang) { i++; } if (i == aLen) { aPrefLangs[aLen] = aAddLang; aLen++; } } mozilla::FontFamilyType gfxPlatformFontList::GetDefaultGeneric(eFontPrefLang aLang) { if (aLang == eFontPrefLang_Emoji) { return eFamily_moz_emoji; } // initialize lang group pref font defaults (i.e. serif/sans-serif) if (MOZ_UNLIKELY(mDefaultGenericsLangGroup.IsEmpty())) { mDefaultGenericsLangGroup.AppendElements(ArrayLength(gPrefLangNames)); for (uint32_t i = 0; i < ArrayLength(gPrefLangNames); i++) { nsAutoCString prefDefaultFontType("font.default."); prefDefaultFontType.Append(GetPrefLangName(eFontPrefLang(i))); nsAdoptingCString serifOrSans = Preferences::GetCString(prefDefaultFontType.get()); if (serifOrSans.EqualsLiteral("sans-serif")) { mDefaultGenericsLangGroup[i] = eFamily_sans_serif; } else { mDefaultGenericsLangGroup[i] = eFamily_serif; } } } if (uint32_t(aLang) < ArrayLength(gPrefLangNames)) { return mDefaultGenericsLangGroup[uint32_t(aLang)]; } return eFamily_serif; } gfxFontFamily* gfxPlatformFontList::GetDefaultFont(const gfxFontStyle* aStyle) { gfxFontFamily* family = GetDefaultFontForPlatform(aStyle); if (family) { return family; } // Something has gone wrong and we were unable to retrieve a default font // from the platform. (Likely the whitelist has blocked all potential // default fonts.) As a last resort, we return the first font listed in // mFontFamilies. return mFontFamilies.Iter().Data(); } void gfxPlatformFontList::GetFontFamilyNames(nsTArray<nsString>& aFontFamilyNames) { for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { RefPtr<gfxFontFamily>& family = iter.Data(); aFontFamilyNames.AppendElement(family->Name()); } } nsILanguageAtomService* gfxPlatformFontList::GetLangService() { if (!mLangService) { mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID); } NS_ASSERTION(mLangService, "no language service!"); return mLangService; } nsIAtom* gfxPlatformFontList::GetLangGroup(nsIAtom* aLanguage) { // map lang ==> langGroup nsIAtom *langGroup = nullptr; if (aLanguage) { nsresult rv; nsILanguageAtomService* langService = GetLangService(); langGroup = langService->GetLanguageGroup(aLanguage, &rv); } if (!langGroup) { langGroup = nsGkAtoms::Unicode; } return langGroup; } /* static */ const char* gfxPlatformFontList::GetGenericName(FontFamilyType aGenericType) { static const char kGeneric_serif[] = "serif"; static const char kGeneric_sans_serif[] = "sans-serif"; static const char kGeneric_monospace[] = "monospace"; static const char kGeneric_cursive[] = "cursive"; static const char kGeneric_fantasy[] = "fantasy"; // type should be standard generic type at this point NS_ASSERTION(aGenericType >= eFamily_serif && aGenericType <= eFamily_fantasy, "standard generic font family type required"); // map generic type to string const char *generic = nullptr; switch (aGenericType) { case eFamily_serif: generic = kGeneric_serif; break; case eFamily_sans_serif: generic = kGeneric_sans_serif; break; case eFamily_monospace: generic = kGeneric_monospace; break; case eFamily_cursive: generic = kGeneric_cursive; break; case eFamily_fantasy: generic = kGeneric_fantasy; break; default: break; } return generic; } // mapping of moz lang groups ==> default lang struct MozLangGroupData { nsIAtom* const& mozLangGroup; const char *defaultLang; }; const MozLangGroupData MozLangGroups[] = { { nsGkAtoms::x_western, "en" }, { nsGkAtoms::x_cyrillic, "ru" }, { nsGkAtoms::x_devanagari, "hi" }, { nsGkAtoms::x_tamil, "ta" }, { nsGkAtoms::x_armn, "hy" }, { nsGkAtoms::x_beng, "bn" }, { nsGkAtoms::x_cans, "iu" }, { nsGkAtoms::x_ethi, "am" }, { nsGkAtoms::x_geor, "ka" }, { nsGkAtoms::x_gujr, "gu" }, { nsGkAtoms::x_guru, "pa" }, { nsGkAtoms::x_khmr, "km" }, { nsGkAtoms::x_knda, "kn" }, { nsGkAtoms::x_mlym, "ml" }, { nsGkAtoms::x_orya, "or" }, { nsGkAtoms::x_sinh, "si" }, { nsGkAtoms::x_tamil, "ta" }, { nsGkAtoms::x_telu, "te" }, { nsGkAtoms::x_tibt, "bo" }, { nsGkAtoms::Unicode, 0 } }; bool gfxPlatformFontList::TryLangForGroup(const nsACString& aOSLang, nsIAtom* aLangGroup, nsACString& aFcLang) { // Truncate at '.' or '@' from aOSLang, and convert '_' to '-'. // aOSLang is in the form "language[_territory][.codeset][@modifier]". // fontconfig takes languages in the form "language-territory". // nsILanguageAtomService takes languages in the form language-subtag, // where subtag may be a territory. fontconfig and nsILanguageAtomService // handle case-conversion for us. const char *pos, *end; aOSLang.BeginReading(pos); aOSLang.EndReading(end); aFcLang.Truncate(); while (pos < end) { switch (*pos) { case '.': case '@': end = pos; break; case '_': aFcLang.Append('-'); break; default: aFcLang.Append(*pos); } ++pos; } nsILanguageAtomService* langService = GetLangService(); nsIAtom *atom = langService->LookupLanguage(aFcLang); return atom == aLangGroup; } void gfxPlatformFontList::GetSampleLangForGroup(nsIAtom* aLanguage, nsACString& aLangStr, bool aCheckEnvironment) { aLangStr.Truncate(); if (!aLanguage) { return; } // set up lang string const MozLangGroupData *mozLangGroup = nullptr; // -- look it up in the list of moz lang groups for (unsigned int i = 0; i < ArrayLength(MozLangGroups); ++i) { if (aLanguage == MozLangGroups[i].mozLangGroup) { mozLangGroup = &MozLangGroups[i]; break; } } // -- not a mozilla lang group? Just return the BCP47 string // representation of the lang group if (!mozLangGroup) { // Not a special mozilla language group. // Use aLanguage as a language code. aLanguage->ToUTF8String(aLangStr); return; } // -- check the environment for the user's preferred language that // corresponds to this mozilla lang group. if (aCheckEnvironment) { const char *languages = getenv("LANGUAGE"); if (languages) { const char separator = ':'; for (const char *pos = languages; true; ++pos) { if (*pos == '\0' || *pos == separator) { if (languages < pos && TryLangForGroup(Substring(languages, pos), aLanguage, aLangStr)) return; if (*pos == '\0') break; languages = pos + 1; } } } const char *ctype = setlocale(LC_CTYPE, nullptr); if (ctype && TryLangForGroup(nsDependentCString(ctype), aLanguage, aLangStr)) { return; } } if (mozLangGroup->defaultLang) { aLangStr.Assign(mozLangGroup->defaultLang); } else { aLangStr.Truncate(); } } 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; 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"))); } if (done) { mOtherFamilyNamesInitialized = true; mFaceNameListsInitialized = true; } return done; } 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) { for (auto it = mFaceNamesMissed->Iter(); !it.Done(); it.Next()) { if (FindFaceName(it.Get()->GetKey())) { rebuilt = true; RebuildLocalFonts(); break; } } mFaceNamesMissed = nullptr; } if (mOtherNamesMissed) { for (auto it = mOtherNamesMissed->Iter(); !it.Done(); it.Next()) { if (FindFamily(it.Get()->GetKey())) { forceReflow = true; ForceGlobalReflow(); break; } } mOtherNamesMissed = nullptr; } 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)" : ""))); } 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); } void gfxPlatformFontList::RebuildLocalFonts() { for (auto it = mUserFontSetList.Iter(); !it.Done(); it.Next()) { it.Get()->GetKey()->RebuildLocalRules(); } } void gfxPlatformFontList::ClearLangGroupPrefFonts() { for (uint32_t i = eFontPrefLang_First; i < eFontPrefLang_First + eFontPrefLang_Count; i++) { auto& prefFontsLangGroup = mLangGroupPrefFonts[i]; for (uint32_t j = eFamily_generic_first; j < eFamily_generic_first + eFamily_generic_count; j++) { prefFontsLangGroup[j] = nullptr; } } } // Support for memory reporting // this is also used by subclasses that hold additional font tables /*static*/ size_t gfxPlatformFontList::SizeOfFontFamilyTableExcludingThis( const FontFamilyTable& aTable, MallocSizeOf aMallocSizeOf) { size_t n = aTable.ShallowSizeOfExcludingThis(aMallocSizeOf); for (auto iter = aTable.ConstIter(); !iter.Done(); iter.Next()) { // 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. n += iter.Key().SizeOfExcludingThisIfUnshared(aMallocSizeOf); } return n; } /*static*/ size_t gfxPlatformFontList::SizeOfFontEntryTableExcludingThis( const FontEntryTable& aTable, MallocSizeOf aMallocSizeOf) { size_t n = aTable.ShallowSizeOfExcludingThis(aMallocSizeOf); for (auto iter = aTable.ConstIter(); !iter.Done(); iter.Next()) { // The font itself is counted by its owning family; here we only care // about the names stored in the hashtable keys. n += iter.Key().SizeOfExcludingThisIfUnshared(aMallocSizeOf); } return n; } void gfxPlatformFontList::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { aSizes->mFontListSize += mFontFamilies.ShallowSizeOfExcludingThis(aMallocSizeOf); for (auto iter = mFontFamilies.ConstIter(); !iter.Done(); iter.Next()) { aSizes->mFontListSize += iter.Key().SizeOfExcludingThisIfUnshared(aMallocSizeOf); iter.Data()->AddSizeOfIncludingThis(aMallocSizeOf, aSizes); } aSizes->mFontListSize += SizeOfFontFamilyTableExcludingThis(mOtherFamilyNames, aMallocSizeOf); if (mExtraNames) { aSizes->mFontListSize += SizeOfFontEntryTableExcludingThis(mExtraNames->mFullnames, aMallocSizeOf); aSizes->mFontListSize += SizeOfFontEntryTableExcludingThis(mExtraNames->mPostscriptNames, aMallocSizeOf); } for (uint32_t i = eFontPrefLang_First; i < eFontPrefLang_First + eFontPrefLang_Count; i++) { auto& prefFontsLangGroup = mLangGroupPrefFonts[i]; for (uint32_t j = eFamily_generic_first; j < eFamily_generic_first + eFamily_generic_count; j++) { PrefFontList* pf = prefFontsLangGroup[j].get(); if (pf) { aSizes->mFontListSize += pf->ShallowSizeOfExcludingThis(aMallocSizeOf); } } } aSizes->mFontListSize += mCodepointsWithNoFonts.SizeOfExcludingThis(aMallocSizeOf); aSizes->mFontListSize += mFontFamiliesToLoad.ShallowSizeOfExcludingThis(aMallocSizeOf); aSizes->mFontListSize += mBadUnderlineFamilyNames.SizeOfExcludingThis(aMallocSizeOf); aSizes->mFontListSize += mSharedCmaps.ShallowSizeOfExcludingThis(aMallocSizeOf); for (auto iter = mSharedCmaps.ConstIter(); !iter.Done(); iter.Next()) { aSizes->mCharMapsSize += iter.Get()->GetKey()->SizeOfIncludingThis(aMallocSizeOf); } } void gfxPlatformFontList::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { aSizes->mFontListSize += aMallocSizeOf(this); AddSizeOfExcludingThis(aMallocSizeOf, aSizes); } bool gfxPlatformFontList::IsFontFamilyWhitelistActive() { return mFontFamilyWhitelistActive; } #undef LOG #undef LOG_ENABLED