Add m-esr52 at 52.6.0

1 files changed, 84 insertions, 0 deletions

diff --git a/gfx/thebes/gfxFT2Fonts.h b/gfx/thebes/gfxFT2Fonts.h
new file mode 100644
index 000000000..8e4691c06
--- /dev/null
+++ b/gfx/thebes/gfxFT2Fonts.h
@@ -0,0 +1,84 @@
+/* -*- 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/. */
+
+#ifndef GFX_FT2FONTS_H
+#define GFX_FT2FONTS_H
+
+#include "mozilla/MemoryReporting.h"
+#include "cairo.h"
+#include "gfxTypes.h"
+#include "gfxFont.h"
+#include "gfxFT2FontBase.h"
+#include "gfxContext.h"
+#include "gfxFontUtils.h"
+#include "gfxUserFontSet.h"
+
+class FT2FontEntry;
+
+class gfxFT2Font : public gfxFT2FontBase {
+public: // new functions
+    gfxFT2Font(cairo_scaled_font_t *aCairoFont,
+               FT2FontEntry *aFontEntry,
+               const gfxFontStyle *aFontStyle,
+               bool aNeedsBold);
+    virtual ~gfxFT2Font ();
+
+    FT2FontEntry *GetFontEntry();
+
+    struct CachedGlyphData {
+        CachedGlyphData()
+            : glyphIndex(0xffffffffU) { }
+
+        CachedGlyphData(uint32_t gid)
+            : glyphIndex(gid) { }
+
+        uint32_t glyphIndex;
+        int32_t lsbDelta;
+        int32_t rsbDelta;
+        int32_t xAdvance;
+    };
+
+    const CachedGlyphData* GetGlyphDataForChar(uint32_t ch) {
+        CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
+
+        if (!entry)
+            return nullptr;
+
+        if (entry->mData.glyphIndex == 0xffffffffU) {
+            // this is a new entry, fill it
+            FillGlyphDataForChar(ch, &entry->mData);
+        }
+
+        return &entry->mData;
+    }
+
+    virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                                        FontCacheSizes* aSizes) const override;
+    virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
+                                        FontCacheSizes* aSizes) const override;
+
+protected:
+    virtual bool ShapeText(DrawTarget      *aDrawTarget,
+                           const char16_t *aText,
+                           uint32_t         aOffset,
+                           uint32_t         aLength,
+                           Script           aScript,
+                           bool             aVertical,
+                           gfxShapedText   *aShapedText) override;
+
+    void FillGlyphDataForChar(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 */
+