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0fd7a7ea1a
We use a recursive-mutex in gfxPlatformFontList as some of its methods may be called from classes like gfxFontEntry that are used both from layout code (which does not explictly lock the font-list) and internally by font-list code that is already holding the lock. Differential Revision: https://phabricator.services.mozilla.com/D143869
252 lines
9.2 KiB
C++
252 lines
9.2 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_FT2FONTLIST_H
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#define GFX_FT2FONTLIST_H
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#include "mozilla/MemoryReporting.h"
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#include "gfxFT2FontBase.h"
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#include "gfxPlatformFontList.h"
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#include "nsTHashSet.h"
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namespace mozilla {
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namespace dom {
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class SystemFontListEntry;
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};
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}; // namespace mozilla
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class FontNameCache;
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typedef struct FT_FaceRec_* FT_Face;
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class nsZipArchive;
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class WillShutdownObserver;
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class FTUserFontData;
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class FT2FontEntry final : public gfxFT2FontEntryBase {
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friend class gfxFT2FontList;
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using FontListEntry = mozilla::dom::SystemFontListEntry;
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public:
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explicit FT2FontEntry(const nsACString& aFaceName)
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: gfxFT2FontEntryBase(aFaceName), mFTFontIndex(0) {}
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~FT2FontEntry();
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gfxFontEntry* Clone() const override;
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const nsCString& GetName() const { return Name(); }
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// create a font entry for a downloaded font
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static FT2FontEntry* CreateFontEntry(
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const nsACString& aFontName, WeightRange aWeight, StretchRange aStretch,
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SlantStyleRange aStyle, const uint8_t* aFontData, uint32_t aLength);
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// create a font entry representing an installed font, identified by
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// a FontListEntry; the freetype and cairo faces will not be instantiated
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// until actually needed
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static FT2FontEntry* CreateFontEntry(const FontListEntry& aFLE);
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// Create a font entry with the given name; if it is an installed font,
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// also record the filename and index.
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// If a non-null harfbuzz face is passed, also set style/weight/stretch
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// properties of the entry from the values in the face.
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static FT2FontEntry* CreateFontEntry(const nsACString& aName,
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const char* aFilename, uint8_t aIndex,
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const hb_face_t* aFace);
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gfxFont* CreateFontInstance(const gfxFontStyle* aStyle) override;
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nsresult ReadCMAP(FontInfoData* aFontInfoData = nullptr) override;
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hb_blob_t* GetFontTable(uint32_t aTableTag) override;
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bool HasFontTable(uint32_t aTableTag) override;
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nsresult CopyFontTable(uint32_t aTableTag, nsTArray<uint8_t>&) override;
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bool HasVariations() override;
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void GetVariationAxes(
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nsTArray<gfxFontVariationAxis>& aVariationAxes) override;
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void GetVariationInstances(
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nsTArray<gfxFontVariationInstance>& aInstances) override;
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// Check for various kinds of brokenness, and set flags on the entry
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// accordingly so that we avoid using bad font tables
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void CheckForBrokenFont(gfxFontFamily* aFamily);
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void CheckForBrokenFont(const nsACString& aFamilyKey);
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already_AddRefed<mozilla::gfx::SharedFTFace> GetFTFace(bool aCommit = false);
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FTUserFontData* GetUserFontData();
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FT_MM_Var* GetMMVar() override;
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// Get a harfbuzz face for this font, if possible. The caller is responsible
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// to destroy the face when no longer needed.
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// This may be a bit expensive, so avoid calling multiple times if the same
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// face can be re-used for several purposes instead.
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hb_face_t* CreateHBFace() const;
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/**
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* Append this face's metadata to aFaceList for storage in the FontNameCache
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* (for faster startup).
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* The aPSName and aFullName parameters here can in principle be empty,
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* but if they are missing for a given face then src:local() lookups will
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* not be able to find it when the shared font list is in use.
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*/
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void AppendToFaceList(nsCString& aFaceList, const nsACString& aFamilyName,
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const nsACString& aPSName, const nsACString& aFullName,
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FontVisibility aVisibility);
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void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const override;
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void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const override;
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RefPtr<mozilla::gfx::SharedFTFace> mFTFace;
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FT_MM_Var* mMMVar = nullptr;
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nsCString mFilename;
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uint8_t mFTFontIndex;
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mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontFreeType> mUnscaledFont;
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nsTHashSet<uint32_t> mAvailableTables;
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bool mHasVariations = false;
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bool mHasVariationsInitialized = false;
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bool mMMVarInitialized = false;
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};
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class FT2FontFamily final : public gfxFontFamily {
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using FontListEntry = mozilla::dom::SystemFontListEntry;
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public:
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explicit FT2FontFamily(const nsACString& aName, FontVisibility aVisibility)
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: gfxFontFamily(aName, aVisibility) {}
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// Append this family's faces to the IPC fontlist
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void AddFacesToFontList(nsTArray<FontListEntry>* aFontList);
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void FinalizeMemberList(bool aSortFaces);
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};
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class gfxFT2FontList final : public gfxPlatformFontList {
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using FontListEntry = mozilla::dom::SystemFontListEntry;
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public:
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gfxFT2FontList();
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virtual ~gfxFT2FontList();
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gfxFontEntry* CreateFontEntry(
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mozilla::fontlist::Face* aFace,
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const mozilla::fontlist::Family* aFamily) override;
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gfxFontEntry* LookupLocalFont(nsPresContext* aPresContext,
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const nsACString& aFontName,
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WeightRange aWeightForEntry,
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StretchRange aStretchForEntry,
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SlantStyleRange aStyleForEntry) override;
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gfxFontEntry* MakePlatformFont(const nsACString& aFontName,
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WeightRange aWeightForEntry,
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StretchRange aStretchForEntry,
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SlantStyleRange aStyleForEntry,
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const uint8_t* aFontData,
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uint32_t aLength) override;
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void WriteCache();
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void ReadSystemFontList(mozilla::dom::SystemFontList*);
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static gfxFT2FontList* PlatformFontList() {
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return static_cast<gfxFT2FontList*>(
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gfxPlatformFontList::PlatformFontList());
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}
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gfxFontFamily* CreateFontFamily(const nsACString& aName,
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FontVisibility aVisibility) const override;
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void WillShutdown();
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protected:
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typedef enum { kUnknown, kStandard } StandardFile;
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// initialize font lists
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nsresult InitFontListForPlatform() REQUIRES(mLock) override;
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void AppendFaceFromFontListEntry(const FontListEntry& aFLE,
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StandardFile aStdFile) REQUIRES(mLock);
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void AppendFacesFromBlob(const nsCString& aFileName, StandardFile aStdFile,
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hb_blob_t* aBlob, FontNameCache* aCache,
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uint32_t aTimestamp, uint32_t aFilesize)
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REQUIRES(mLock);
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void AppendFacesFromFontFile(const nsCString& aFileName,
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FontNameCache* aCache, StandardFile aStdFile)
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REQUIRES(mLock);
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void AppendFacesFromOmnijarEntry(nsZipArchive* aReader,
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const nsCString& aEntryName,
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FontNameCache* aCache, bool aJarChanged)
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REQUIRES(mLock);
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void InitSharedFontListForPlatform() REQUIRES(mLock) override;
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void CollectInitData(const FontListEntry& aFLE, const nsCString& aPSName,
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const nsCString& aFullName, StandardFile aStdFile);
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/**
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* Callback passed to AppendFacesFromCachedFaceList to collect family/face
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* information in either the unshared or shared list we're building.
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*/
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typedef void (*CollectFunc)(const FontListEntry& aFLE,
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const nsCString& aPSName,
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const nsCString& aFullName,
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StandardFile aStdFile);
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/**
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* Append faces from the face-list record for a specific file.
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* aCollectFace is a callback that will store the face(s) in either the
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* unshared mFontFamilies list or the mFamilyInitData/mFaceInitData tables
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* that will be used to initialize the shared list.
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* Returns true if it is able to read at least one face entry; false if no
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* usable face entry was found.
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*/
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bool AppendFacesFromCachedFaceList(CollectFunc aCollectFace,
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const nsCString& aFileName,
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const nsCString& aFaceList,
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StandardFile aStdFile) REQUIRES(mLock);
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void AddFaceToList(const nsCString& aEntryName, uint32_t aIndex,
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StandardFile aStdFile, hb_face_t* aFace,
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nsCString& aFaceList) REQUIRES(mLock);
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void FindFonts() REQUIRES(mLock);
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void FindFontsInOmnijar(FontNameCache* aCache) REQUIRES(mLock);
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void FindFontsInDir(const nsCString& aDir, FontNameCache* aFNC)
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REQUIRES(mLock);
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FontFamily GetDefaultFontForPlatform(nsPresContext* aPresContext,
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const gfxFontStyle* aStyle,
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nsAtom* aLanguage = nullptr)
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REQUIRES(mLock) override;
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nsTHashSet<nsCString> mSkipSpaceLookupCheckFamilies;
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private:
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mozilla::UniquePtr<FontNameCache> mFontNameCache;
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int64_t mJarModifiedTime;
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RefPtr<WillShutdownObserver> mObserver;
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nsTArray<mozilla::fontlist::Family::InitData> mFamilyInitData;
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nsClassHashtable<nsCStringHashKey,
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nsTArray<mozilla::fontlist::Face::InitData>>
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mFaceInitData;
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};
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#endif /* GFX_FT2FONTLIST_H */
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