Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 266 insertions, 0 deletions

diff --git a/gfx/thebes/gfxMacPlatformFontList.h b/gfx/thebes/gfxMacPlatformFontList.h
new file mode 100644
index 0000000000..518c58d3af
--- /dev/null
+++ b/gfx/thebes/gfxMacPlatformFontList.h
@@ -0,0 +1,266 @@
+/* -*- 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 gfxMacPlatformFontList_H_
+#define gfxMacPlatformFontList_H_
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#include "mozilla/FontPropertyTypes.h"
+#include "mozilla/MemoryReporting.h"
+#include "nsRefPtrHashtable.h"
+
+#include "gfxPlatformFontList.h"
+#include "gfxPlatform.h"
+#include "gfxPlatformMac.h"
+
+#include "nsUnicharUtils.h"
+#include "nsTArray.h"
+#include "mozilla/LookAndFeel.h"
+
+#include "mozilla/gfx/UnscaledFontMac.h"
+
+class gfxMacPlatformFontList;
+
+// a single member of a font family (i.e. a single face, such as Times Italic)
+class MacOSFontEntry final : public gfxFontEntry {
+ public:
+  friend class gfxMacPlatformFontList;
+  friend class gfxMacFont;
+
+  MacOSFontEntry(const nsACString& aPostscriptName, WeightRange aWeight,
+                 bool aIsStandardFace = false, double aSizeHint = 0.0);
+
+  // for use with data fonts
+  MacOSFontEntry(const nsACString& aPostscriptName, CGFontRef aFontRef,
+                 WeightRange aWeight, StretchRange aStretch,
+                 SlantStyleRange aStyle, bool aIsDataUserFont, bool aIsLocal);
+
+  virtual ~MacOSFontEntry() { ::CGFontRelease(mFontRef); }
+
+  gfxFontEntry* Clone() const override;
+
+  // Return a non-owning reference to our CGFont; caller must not release it.
+  // This will cause the fontEntry to create & retain a CGFont for the life
+  // of the entry.
+  // Note that in the case of a broken font, this could return null.
+  CGFontRef GetFontRef();
+
+  // Return a new reference to our CGFont. Caller is responsible to release
+  // this reference.
+  // (If the entry has a cached CGFont, this just bumps its refcount and
+  // returns it; if not, the instance returned will be owned solely by the
+  // caller.)
+  // Note that in the case of a broken font, this could return null.
+  CGFontRef CreateOrCopyFontRef();
+
+  // override gfxFontEntry table access function to bypass table cache,
+  // use CGFontRef API to get direct access to system font data
+  hb_blob_t* GetFontTable(uint32_t aTag) override;
+
+  void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontListSizes* aSizes) const override;
+
+  nsresult ReadCMAP(FontInfoData* aFontInfoData = nullptr) override;
+
+  bool RequiresAATLayout() const { return mRequiresAAT; }
+
+  bool HasVariations() override;
+  void GetVariationAxes(
+      nsTArray<gfxFontVariationAxis>& aVariationAxes) override;
+  void GetVariationInstances(
+      nsTArray<gfxFontVariationInstance>& aInstances) override;
+
+  bool IsCFF();
+
+  bool SupportsOpenTypeFeature(Script aScript, uint32_t aFeatureTag) override;
+
+ protected:
+  gfxFont* CreateFontInstance(const gfxFontStyle* aFontStyle) override;
+
+  bool HasFontTable(uint32_t aTableTag) override;
+
+  static void DestroyBlobFunc(void* aUserData);
+
+  CGFontRef
+      mFontRef;  // owning reference to the CGFont, released on destruction
+
+  double mSizeHint;
+
+  bool mFontRefInitialized;
+  bool mRequiresAAT;
+  bool mIsCFF;
+  bool mIsCFFInitialized;
+  bool mHasVariations;
+  bool mHasVariationsInitialized;
+  bool mHasAATSmallCaps;
+  bool mHasAATSmallCapsInitialized;
+
+  // To work around Core Text's mishandling of the default value for 'opsz',
+  // we need to record whether the font has an a optical size axis, what its
+  // range and default values are, and a usable close-to-default alternative.
+  // (See bug 1457417 for details.)
+  // These fields are used by gfxMacFont, but stored in the font entry so
+  // that only a single font instance needs to inspect the available
+  // variations.
+  gfxFontVariationAxis mOpszAxis;
+  float mAdjustedDefaultOpsz;
+
+  nsTHashtable<nsUint32HashKey> mAvailableTables;
+
+  mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontMac> mUnscaledFont;
+};
+
+class gfxMacPlatformFontList final : public gfxPlatformFontList {
+  using FontFamilyListEntry = mozilla::dom::SystemFontListEntry;
+
+ public:
+  static gfxMacPlatformFontList* PlatformFontList() {
+    return static_cast<gfxMacPlatformFontList*>(
+        gfxPlatformFontList::PlatformFontList());
+  }
+
+  gfxFontFamily* CreateFontFamily(const nsACString& aName,
+                                  FontVisibility aVisibility) const override;
+
+  static int32_t AppleWeightToCSSWeight(int32_t aAppleWeight);
+
+  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;
+
+  bool FindAndAddFamiliesLocked(
+      nsPresContext* aPresContext, mozilla::StyleGenericFontFamily aGeneric,
+      const nsACString& aFamily, nsTArray<FamilyAndGeneric>* aOutput,
+      FindFamiliesFlags aFlags, gfxFontStyle* aStyle = nullptr,
+      nsAtom* aLanguage = nullptr, gfxFloat aDevToCssSize = 1.0)
+      MOZ_REQUIRES(mLock) override;
+
+  // lookup the system font for a particular system font type and set
+  // the name and style characteristics
+  void LookupSystemFont(mozilla::LookAndFeel::FontID aSystemFontID,
+                        nsACString& aSystemFontName, gfxFontStyle& aFontStyle);
+
+  // Values for the entryType field in FontFamilyListEntry records passed
+  // from chrome to content process.
+  enum FontFamilyEntryType {
+    kStandardFontFamily = 0,          // a standard installed font family
+    kTextSizeSystemFontFamily = 1,    // name of 'system' font at text sizes
+    kDisplaySizeSystemFontFamily = 2  // 'system' font at display sizes
+  };
+  void ReadSystemFontList(mozilla::dom::SystemFontList*);
+
+ protected:
+  FontFamily GetDefaultFontForPlatform(nsPresContext* aPresContext,
+                                       const gfxFontStyle* aStyle,
+                                       nsAtom* aLanguage = nullptr)
+      MOZ_REQUIRES(mLock) override;
+
+ private:
+  friend class gfxPlatformMac;
+
+  gfxMacPlatformFontList();
+  virtual ~gfxMacPlatformFontList();
+
+  // initialize font lists
+  nsresult InitFontListForPlatform() MOZ_REQUIRES(mLock) override;
+  void InitSharedFontListForPlatform() MOZ_REQUIRES(mLock) override;
+
+  // handle commonly used fonts for which the name table should be loaded at
+  // startup
+  void PreloadNamesList() MOZ_REQUIRES(mLock);
+
+  // special case font faces treated as font families (set via prefs)
+  void InitSingleFaceList() MOZ_REQUIRES(mLock);
+  void InitAliasesForSingleFaceList() MOZ_REQUIRES(mLock);
+
+  // initialize system fonts
+  void InitSystemFontNames() MOZ_REQUIRES(mLock);
+
+  // helper function to lookup in both hidden system fonts and normal fonts
+  gfxFontFamily* FindSystemFontFamily(const nsACString& aFamily)
+      MOZ_REQUIRES(mLock);
+
+  FontVisibility GetVisibilityForFamily(const nsACString& aName) const;
+
+  static void RegisteredFontsChangedNotificationCallback(
+      CFNotificationCenterRef center, void* observer, CFStringRef name,
+      const void* object, CFDictionaryRef userInfo);
+
+  // attempt to use platform-specific fallback for the given character
+  // return null if no usable result found
+  gfxFontEntry* PlatformGlobalFontFallback(nsPresContext* aPresContext,
+                                           const uint32_t aCh,
+                                           Script aRunScript,
+                                           const gfxFontStyle* aMatchStyle,
+                                           FontFamily& aMatchedFamily)
+      MOZ_REQUIRES(mLock) override;
+
+  bool UsesSystemFallback() override { return true; }
+
+  already_AddRefed<FontInfoData> CreateFontInfoData() override;
+
+  // Add the specified family to mFontFamilies.
+  // Ideally we'd use NSString* instead of CFStringRef here, but this header
+  // file is included in .cpp files, so we can't use objective C classes here.
+  // But CFStringRef and NSString* are the same thing anyway (they're
+  // toll-free bridged).
+  void AddFamily(CFStringRef aFamily) MOZ_REQUIRES(mLock);
+
+  void AddFamily(const nsACString& aFamilyName, FontVisibility aVisibility)
+      MOZ_REQUIRES(mLock);
+
+  static void ActivateFontsFromDir(
+      const nsACString& aDir,
+      nsTHashSet<nsCStringHashKey>* aLoadedFamilies = nullptr);
+
+  gfxFontEntry* CreateFontEntry(
+      mozilla::fontlist::Face* aFace,
+      const mozilla::fontlist::Family* aFamily) override;
+
+  void GetFacesInitDataForFamily(
+      const mozilla::fontlist::Family* aFamily,
+      nsTArray<mozilla::fontlist::Face::InitData>& aFaces,
+      bool aLoadCmaps) const override;
+
+  void ReadFaceNamesForFamily(mozilla::fontlist::Family* aFamily,
+                              bool aNeedFullnamePostscriptNames)
+      MOZ_REQUIRES(mLock) override;
+
+#ifdef MOZ_BUNDLED_FONTS
+  void ActivateBundledFonts();
+#endif
+
+  enum { kATSGenerationInitial = -1 };
+
+  // default font for use with system-wide font fallback
+  CTFontRef mDefaultFont;
+
+  // font families that -apple-system maps to
+  // Pre-10.11 this was always a single font family, such as Lucida Grande
+  // or Helvetica Neue. For OSX 10.11, Apple uses pair of families
+  // for the UI, one for text sizes and another for display sizes
+  bool mUseSizeSensitiveSystemFont;
+  nsCString mSystemTextFontFamilyName;
+  nsCString mSystemDisplayFontFamilyName;  // only used on OSX 10.11
+
+  nsTArray<nsCString> mSingleFaceFonts;
+  nsTArray<nsCString> mPreloadFonts;
+
+#ifdef MOZ_BUNDLED_FONTS
+  nsTHashSet<nsCStringHashKey> mBundledFamilies;
+#endif
+};
+
+#endif /* gfxMacPlatformFontList_H_ */