1 files changed, 81 insertions, 0 deletions
diff --git a/gfx/thebes/gfxFT2Fonts.h b/gfx/thebes/gfxFT2Fonts.h
new file mode 100644
index 0000000000..3b164c711e
--- /dev/null
+++ b/gfx/thebes/gfxFT2Fonts.h
@@ -0,0 +1,81 @@
+/* -*- 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_FT2FONTS_H
+#define GFX_FT2FONTS_H
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxTypes.h"
+#include "gfxFont.h"
+#include "gfxFT2FontBase.h"
+#include "gfxContext.h"
+#include "gfxFontUtils.h"
+#include "gfxUserFontSet.h"
+
+class FT2FontEntry;
+
+class gfxFT2Font final : public gfxFT2FontBase {
+ public:  // new functions
+  gfxFT2Font(const RefPtr<mozilla::gfx::UnscaledFontFreeType>& aUnscaledFont,
+             RefPtr<mozilla::gfx::SharedFTFace>&& aFTFace,
+             FT2FontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
+             int aLoadFlags);
+
+  FT2FontEntry* GetFontEntry();
+
+  already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
+      const TextRunDrawParams& aRunParams) override;
+
+  bool ShouldHintMetrics() const override;
+
+  void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontCacheSizes* aSizes) const override;
+  void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                              FontCacheSizes* aSizes) const override;
+
+ protected:
+  ~gfxFT2Font() override;
+
+  struct CachedGlyphData {
+    CachedGlyphData() : glyphIndex(0xffffffffU) {}
+
+    explicit CachedGlyphData(uint32_t gid) : glyphIndex(gid) {}
+
+    uint32_t glyphIndex;
+    int32_t lsbDelta;
+    int32_t rsbDelta;
+    int32_t xAdvance;
+  };
+
+  const CachedGlyphData* GetGlyphDataForChar(FT_Face aFace, uint32_t ch) {
+    CharGlyphMapEntryType* entry = mCharGlyphCache.PutEntry(ch);
+
+    if (!entry) return nullptr;
+
+    if (entry->GetData().glyphIndex == 0xffffffffU) {
+      // this is a new entry, fill it
+      FillGlyphDataForChar(aFace, ch, entry->GetModifiableData());
+    }
+
+    return &entry->GetData();
+  }
+
+  bool ShapeText(DrawTarget* aDrawTarget, const char16_t* aText,
+                 uint32_t aOffset, uint32_t aLength, Script aScript,
+                 nsAtom* aLanguage, bool aVertical, RoundingFlags aRounding,
+                 gfxShapedText* aShapedText) override;
+
+  void FillGlyphDataForChar(FT_Face face, uint32_t ch, CachedGlyphData* gd);
+
+  void AddRange(const char16_t* aText, uint32_t aOffset, uint32_t aLength,
+                gfxShapedText* aShapedText);
+
+  typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData>
+      CharGlyphMapEntryType;
+  typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
+  CharGlyphMap mCharGlyphCache;
+};
+
+#endif /* GFX_FT2FONTS_H */