The Tor Browser: gfx/thebes/gfxGraphiteShaper.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef GFX_GRAPHITESHAPER_H

     7 #define GFX_GRAPHITESHAPER_H

     9 #include "gfxFont.h"

    11 struct gr_face;

    12 struct gr_font;

    13 struct gr_segment;

    15 class gfxGraphiteShaper : public gfxFontShaper {

    16 public:

    17     gfxGraphiteShaper(gfxFont *aFont);

    18     virtual ~gfxGraphiteShaper();

    20     virtual bool ShapeText(gfxContext      *aContext,

    21                            const char16_t *aText,

    22                            uint32_t         aOffset,

    23                            uint32_t         aLength,

    24                            int32_t          aScript,

    25                            gfxShapedText   *aShapedText);

    27     static void Shutdown();

    29 protected:

    30     nsresult SetGlyphsFromSegment(gfxContext      *aContext,

    31                                   gfxShapedText   *aShapedText,

    32                                   uint32_t         aOffset,

    33                                   uint32_t         aLength,

    34                                   const char16_t *aText,

    35                                   gr_segment      *aSegment);

    37     static float GrGetAdvance(const void* appFontHandle, uint16_t glyphid);

    39     gr_face *mGrFace; // owned by the font entry; shaper must call

    40                       // gfxFontEntry::ReleaseGrFace when finished with it

    41     gr_font *mGrFont; // owned by the shaper itself

    43     struct CallbackData {

    44         gfxFont           *mFont;

    45         gfxGraphiteShaper *mShaper;

    46         gfxContext        *mContext;

    47     };

    49     CallbackData mCallbackData;

    51     // Convert HTML 'lang' (BCP47) to Graphite language code

    52     static uint32_t GetGraphiteTagForLang(const nsCString& aLang);

    53     static nsTHashtable<nsUint32HashKey> *sLanguageTags;

    54 };

    56 #endif /* GFX_GRAPHITESHAPER_H */

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