1 files changed, 262 insertions, 0 deletions
diff --git a/gfx/thebes/gfxFT2FontList.h b/gfx/thebes/gfxFT2FontList.h
new file mode 100644
index 0000000000..269fbf28db
--- /dev/null
+++ b/gfx/thebes/gfxFT2FontList.h
@@ -0,0 +1,262 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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/. */
+
+#ifndef GFX_FT2FONTLIST_H
+#define GFX_FT2FONTLIST_H
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxFT2FontBase.h"
+#include "gfxPlatformFontList.h"
+#include "nsTHashSet.h"
+
+namespace mozilla {
+namespace dom {
+class SystemFontListEntry;
+};
+namespace gfx {
+class FTUserFontData;
+};
+};  // namespace mozilla
+
+class FontNameCache;
+typedef struct FT_FaceRec_* FT_Face;
+class nsZipArchive;
+class WillShutdownObserver;
+
+class FT2FontEntry final : public gfxFT2FontEntryBase {
+  friend class gfxFT2FontList;
+
+  using FontListEntry = mozilla::dom::SystemFontListEntry;
+  using FTUserFontData = mozilla::gfx::FTUserFontData;
+
+ public:
+  explicit FT2FontEntry(const nsACString& aFaceName)
+      : gfxFT2FontEntryBase(aFaceName), mFTFontIndex(0) {}
+
+  ~FT2FontEntry();
+
+  gfxFontEntry* Clone() const override;
+
+  const nsCString& GetName() const { return Name(); }
+
+  // create a font entry for a downloaded font
+  static FT2FontEntry* CreateFontEntry(
+      const nsACString& aFontName, WeightRange aWeight, StretchRange aStretch,
+      SlantStyleRange aStyle, const uint8_t* aFontData, uint32_t aLength);
+
+  // create a font entry representing an installed font, identified by
+  // a FontListEntry; the freetype and cairo faces will not be instantiated
+  // until actually needed
+  static FT2FontEntry* CreateFontEntry(const FontListEntry& aFLE);
+
+  // Create a font entry with the given name; if it is an installed font,
+  // also record the filename and index.
+  // If a non-null harfbuzz face is passed, also set style/weight/stretch
+  // properties of the entry from the values in the face.
+  static FT2FontEntry* CreateFontEntry(const nsACString& aName,
+                                       const char* aFilename, uint8_t aIndex,
+                                       const hb_face_t* aFace);
+
+  gfxFont* CreateFontInstance(const gfxFontStyle* aStyle) override;
+
+  nsresult ReadCMAP(FontInfoData* aFontInfoData = nullptr) override;
+
+  hb_blob_t* GetFontTable(uint32_t aTableTag) override;
+
+  bool HasFontTable(uint32_t aTableTag) override;
+  nsresult CopyFontTable(uint32_t aTableTag, nsTArray<uint8_t>&) override;
+
+  bool HasVariations() override;
+  void GetVariationAxes(
+      nsTArray<gfxFontVariationAxis>& aVariationAxes) override;
+  void GetVariationInstances(
+      nsTArray<gfxFontVariationInstance>& aInstances) override;
+
+  // Check for various kinds of brokenness, and set flags on the entry
+  // accordingly so that we avoid using bad font tables
+  void CheckForBrokenFont(gfxFontFamily* aFamily);
+  void CheckForBrokenFont(const nsACString& aFamilyKey);
+
+  already_AddRefed<mozilla::gfx::SharedFTFace> GetFTFace(bool aCommit = false);
+  FTUserFontData* GetUserFontData();
+
+  FT_MM_Var* GetMMVar() override;
+
+  // Get a harfbuzz face for this font, if possible. The caller is responsible
+  // to destroy the face when no longer needed.
+  // This may be a bit expensive, so avoid calling multiple times if the same
+  // face can be re-used for several purposes instead.
+  hb_face_t* CreateHBFace() const;
+
+  /**
+   * Append this face's metadata to aFaceList for storage in the FontNameCache
+   * (for faster startup).
+   * The aPSName and aFullName parameters here can in principle be empty,
+   * but if they are missing for a given face then src:local() lookups will
+   * not be able to find it when the shared font list is in use.
+   */
+  void AppendToFaceList(nsCString& aFaceList, const nsACString& aFamilyName,
+                        const nsACString& aPSName, const nsACString& aFullName,
+                        FontVisibility aVisibility);
+
+  void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontListSizes* aSizes) const override;
+  void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontListSizes* aSizes) const override;
+
+  // Strong reference (addref'd), but held in an atomic ptr rather than a
+  // normal RefPtr.
+  mozilla::Atomic<mozilla::gfx::SharedFTFace*> mFTFace;
+
+  FT_MM_Var* mMMVar = nullptr;
+
+  nsCString mFilename;
+  uint8_t mFTFontIndex;
+
+  mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontFreeType> mUnscaledFont;
+
+  nsTHashSet<uint32_t> mAvailableTables;
+
+  enum class HasVariationsState : int8_t {
+    Uninitialized = -1,
+    No = 0,
+    Yes = 1,
+  };
+  std::atomic<HasVariationsState> mHasVariations =
+      HasVariationsState::Uninitialized;
+
+  bool mMMVarInitialized = false;
+};
+
+class FT2FontFamily final : public gfxFontFamily {
+  using FontListEntry = mozilla::dom::SystemFontListEntry;
+
+ public:
+  explicit FT2FontFamily(const nsACString& aName, FontVisibility aVisibility)
+      : gfxFontFamily(aName, aVisibility) {}
+
+  // Append this family's faces to the IPC fontlist
+  void AddFacesToFontList(nsTArray<FontListEntry>* aFontList);
+
+  void FinalizeMemberList(bool aSortFaces);
+};
+
+class gfxFT2FontList final : public gfxPlatformFontList {
+  using FontListEntry = mozilla::dom::SystemFontListEntry;
+
+ public:
+  gfxFT2FontList();
+  virtual ~gfxFT2FontList();
+
+  gfxFontEntry* CreateFontEntry(
+      mozilla::fontlist::Face* aFace,
+      const mozilla::fontlist::Family* aFamily) override;
+
+  gfxFontEntry* LookupLocalFont(nsPresContext* aPresContext,
+                                const nsACString& aFontName,
+                                WeightRange aWeightForEntry,
+                                StretchRange aStretchForEntry,
+                                SlantStyleRange aStyleForEntry) override;
+
+  gfxFontEntry* MakePlatformFont(const nsACString& aFontName,
+                                 WeightRange aWeightForEntry,
+                                 StretchRange aStretchForEntry,
+                                 SlantStyleRange aStyleForEntry,
+                                 const uint8_t* aFontData,
+                                 uint32_t aLength) override;
+
+  void WriteCache();
+
+  void ReadSystemFontList(mozilla::dom::SystemFontList*);
+
+  static gfxFT2FontList* PlatformFontList() {
+    return static_cast<gfxFT2FontList*>(
+        gfxPlatformFontList::PlatformFontList());
+  }
+
+  gfxFontFamily* CreateFontFamily(const nsACString& aName,
+                                  FontVisibility aVisibility) const override;
+
+  void WillShutdown();
+
+ protected:
+  typedef enum { kUnknown, kStandard } StandardFile;
+
+  // initialize font lists
+  nsresult InitFontListForPlatform() MOZ_REQUIRES(mLock) override;
+
+  void AppendFaceFromFontListEntry(const FontListEntry& aFLE,
+                                   StandardFile aStdFile) MOZ_REQUIRES(mLock);
+
+  void AppendFacesFromBlob(const nsCString& aFileName, StandardFile aStdFile,
+                           hb_blob_t* aBlob, FontNameCache* aCache,
+                           uint32_t aTimestamp, uint32_t aFilesize)
+      MOZ_REQUIRES(mLock);
+
+  void AppendFacesFromFontFile(const nsCString& aFileName,
+                               FontNameCache* aCache, StandardFile aStdFile)
+      MOZ_REQUIRES(mLock);
+
+  void AppendFacesFromOmnijarEntry(nsZipArchive* aReader,
+                                   const nsCString& aEntryName,
+                                   FontNameCache* aCache, bool aJarChanged)
+      MOZ_REQUIRES(mLock);
+
+  void InitSharedFontListForPlatform() MOZ_REQUIRES(mLock) override;
+  void CollectInitData(const FontListEntry& aFLE, const nsCString& aPSName,
+                       const nsCString& aFullName, StandardFile aStdFile);
+
+  /**
+   * Callback passed to AppendFacesFromCachedFaceList to collect family/face
+   * information in either the unshared or shared list we're building.
+   */
+  typedef void (*CollectFunc)(const FontListEntry& aFLE,
+                              const nsCString& aPSName,
+                              const nsCString& aFullName,
+                              StandardFile aStdFile);
+
+  /**
+   * Append faces from the face-list record for a specific file.
+   * aCollectFace is a callback that will store the face(s) in either the
+   * unshared mFontFamilies list or the mFamilyInitData/mFaceInitData tables
+   * that will be used to initialize the shared list.
+   * Returns true if it is able to read at least one face entry; false if no
+   * usable face entry was found.
+   */
+  bool AppendFacesFromCachedFaceList(CollectFunc aCollectFace,
+                                     const nsCString& aFileName,
+                                     const nsCString& aFaceList,
+                                     StandardFile aStdFile) MOZ_REQUIRES(mLock);
+
+  void AddFaceToList(const nsCString& aEntryName, uint32_t aIndex,
+                     StandardFile aStdFile, hb_face_t* aFace,
+                     nsCString& aFaceList) MOZ_REQUIRES(mLock);
+
+  void FindFonts() MOZ_REQUIRES(mLock);
+
+  void FindFontsInOmnijar(FontNameCache* aCache) MOZ_REQUIRES(mLock);
+
+  void FindFontsInDir(const nsCString& aDir, FontNameCache* aFNC)
+      MOZ_REQUIRES(mLock);
+
+  FontFamily GetDefaultFontForPlatform(nsPresContext* aPresContext,
+                                       const gfxFontStyle* aStyle,
+                                       nsAtom* aLanguage = nullptr)
+      MOZ_REQUIRES(mLock) override;
+
+  nsTHashSet<nsCString> mSkipSpaceLookupCheckFamilies;
+
+ private:
+  mozilla::UniquePtr<FontNameCache> mFontNameCache;
+  int64_t mJarModifiedTime;
+  RefPtr<WillShutdownObserver> mObserver;
+
+  nsTArray<mozilla::fontlist::Family::InitData> mFamilyInitData;
+  nsClassHashtable<nsCStringHashKey,
+                   nsTArray<mozilla::fontlist::Face::InitData>>
+      mFaceInitData;
+};
+
+#endif /* GFX_FT2FONTLIST_H */