The Tor Browser: gfx/thebes/gfxCoreTextShaper.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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_CORETEXTSHAPER_H

     7 #define GFX_CORETEXTSHAPER_H

     9 #include "gfxFont.h"

    11 #include <ApplicationServices/ApplicationServices.h>

    13 class gfxMacFont;

    15 class gfxCoreTextShaper : public gfxFontShaper {

    16 public:

    17     gfxCoreTextShaper(gfxMacFont *aFont);

    19     virtual ~gfxCoreTextShaper();

    21     virtual bool ShapeText(gfxContext      *aContext,

    22                            const char16_t *aText,

    23                            uint32_t         aOffset,

    24                            uint32_t         aLength,

    25                            int32_t          aScript,

    26                            gfxShapedText   *aShapedText);

    28     // clean up static objects that may have been cached

    29     static void Shutdown();

    31 protected:

    32     CTFontRef mCTFont;

    33     CFDictionaryRef mAttributesDict;

    35     nsresult SetGlyphsFromRun(gfxShapedText *aShapedText,

    36                               uint32_t       aOffset,

    37                               uint32_t       aLength,

    38                               CTRunRef       aCTRun,

    39                               int32_t        aStringOffset);

    41     CTFontRef CreateCTFontWithDisabledLigatures(CGFloat aSize);

    43     static void CreateDefaultFeaturesDescriptor();

    45     static CTFontDescriptorRef GetDefaultFeaturesDescriptor() {

    46         if (sDefaultFeaturesDescriptor == nullptr) {

    47             CreateDefaultFeaturesDescriptor();

    48         }

    49         return sDefaultFeaturesDescriptor;

    50     }

    52     // cached font descriptor, created the first time it's needed

    53     static CTFontDescriptorRef    sDefaultFeaturesDescriptor;

    55     // cached descriptor for adding disable-ligatures setting to a font

    56     static CTFontDescriptorRef    sDisableLigaturesDescriptor;

    57 };

    59 #endif /* GFX_CORETEXTSHAPER_H */

The Tor Browser / file revision

gfx/thebes/gfxCoreTextShaper.h@97036ab72558

gfx/thebes/gfxCoreTextShaper.h