The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/tests/gtest/gfxWordCacheTest.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,133 @@
     1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
     1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "gtest/gtest.h"
    1.10 +
    1.11 +#include "nsCOMPtr.h"
    1.12 +#include "nsTArray.h"
    1.13 +#include "nsString.h"
    1.14 +#include "nsDependentString.h"
    1.15 +
    1.16 +#include "prinrval.h"
    1.17 +
    1.18 +#include "gfxContext.h"
    1.19 +#include "gfxFont.h"
    1.20 +#include "gfxPlatform.h"
    1.21 +
    1.22 +#include "gfxFontTest.h"
    1.23 +#include "mozilla/Attributes.h"
    1.24 +
    1.25 +class FrameTextRunCache;
    1.26 +
    1.27 +static FrameTextRunCache *gTextRuns = nullptr;
    1.28 +
    1.29 +/*
    1.30 + * Cache textruns and expire them after 3*10 seconds of no use.
    1.31 + */
    1.32 +class FrameTextRunCache MOZ_FINAL : public nsExpirationTracker<gfxTextRun,3> {
    1.33 +public:
    1.34 + enum { TIMEOUT_SECONDS = 10 };
    1.35 + FrameTextRunCache()
    1.36 +     : nsExpirationTracker<gfxTextRun,3>(TIMEOUT_SECONDS*1000) {}
    1.37 + ~FrameTextRunCache() {
    1.38 +   AgeAllGenerations();
    1.39 + }
    1.40 +
    1.41 + void RemoveFromCache(gfxTextRun* aTextRun) {
    1.42 +   if (aTextRun->GetExpirationState()->IsTracked()) {
    1.43 +     RemoveObject(aTextRun);
    1.44 +   }
    1.45 + }
    1.46 +
    1.47 + // This gets called when the timeout has expired on a gfxTextRun
    1.48 + virtual void NotifyExpired(gfxTextRun* aTextRun) {
    1.49 +   RemoveFromCache(aTextRun);
    1.50 +   delete aTextRun;
    1.51 + }
    1.52 +};
    1.53 +
    1.54 +static gfxTextRun *
    1.55 +MakeTextRun(const char16_t *aText, uint32_t aLength,
    1.56 +           gfxFontGroup *aFontGroup, const gfxFontGroup::Parameters* aParams,
    1.57 +           uint32_t aFlags)
    1.58 +{
    1.59 +   nsAutoPtr<gfxTextRun> textRun;
    1.60 +   if (aLength == 0) {
    1.61 +       abort();
    1.62 +       //textRun = aFontGroup->MakeEmptyTextRun(aParams, aFlags);
    1.63 +   } else if (aLength == 1 && aText[0] == ' ') {
    1.64 +       abort();
    1.65 +       //textRun = aFontGroup->MakeSpaceTextRun(aParams, aFlags);
    1.66 +   } else {
    1.67 +       textRun = aFontGroup->MakeTextRun(aText, aLength, aParams, aFlags);
    1.68 +   }
    1.69 +   if (!textRun)
    1.70 +       return nullptr;
    1.71 +   nsresult rv = gTextRuns->AddObject(textRun);
    1.72 +   if (NS_FAILED(rv)) {
    1.73 +       gTextRuns->RemoveFromCache(textRun);
    1.74 +       return nullptr;
    1.75 +   }
    1.76 +   return textRun.forget();
    1.77 +}
    1.78 +
    1.79 +static already_AddRefed<gfxContext>
    1.80 +MakeContext ()
    1.81 +{
    1.82 +   const int size = 200;
    1.83 +
    1.84 +   nsRefPtr<gfxASurface> surface;
    1.85 +
    1.86 +   surface = gfxPlatform::GetPlatform()->
    1.87 +       CreateOffscreenSurface(IntSize(size, size),
    1.88 +                              gfxASurface::ContentFromFormat(gfxImageFormat::RGB24));
    1.89 +   nsRefPtr<gfxContext> ctx = new gfxContext(surface);
    1.90 +   return ctx.forget();
    1.91 +}
    1.92 +
    1.93 +TEST(Gfx, WordCache) {
    1.94 +   gTextRuns = new FrameTextRunCache();
    1.95 +
    1.96 +   nsRefPtr<gfxContext> ctx = MakeContext();
    1.97 +   {
    1.98 +       gfxFontStyle style (mozilla::gfx::FontStyle::NORMAL,
    1.99 +                           139,
   1.100 +                           10.0,
   1.101 +                           0,
   1.102 +                           NS_NewPermanentAtom(NS_LITERAL_STRING("en")),
   1.103 +                           0.0,
   1.104 +                           false, false,
   1.105 +                           NS_LITERAL_STRING(""));
   1.106 +
   1.107 +       nsRefPtr<gfxFontGroup> fontGroup =
   1.108 +           gfxPlatform::GetPlatform()->CreateFontGroup(NS_LITERAL_STRING("Geneva, MS Sans Serif, Helvetica,serif"), &style, nullptr);
   1.109 +
   1.110 +       gfxTextRunFactory::Parameters params = {
   1.111 +           ctx, nullptr, nullptr, nullptr, 0, 60
   1.112 +       };
   1.113 +
   1.114 +       uint32_t flags = gfxTextRunFactory::TEXT_IS_PERSISTENT;
   1.115 +
   1.116 +       // First load an Arabic word into the cache
   1.117 +       const char cString[] = "\xd8\xaa\xd9\x85";
   1.118 +       nsDependentCString cStr(cString);
   1.119 +       NS_ConvertUTF8toUTF16 str(cStr);
   1.120 +       gfxTextRun *tr = MakeTextRun(str.get(), str.Length(), fontGroup, &params, flags);
   1.121 +       tr->GetAdvanceWidth(0, str.Length(), nullptr);
   1.122 +
   1.123 +       // Now try to trigger an assertion with a word cache bug. The first
   1.124 +       // word is in the cache so it gets added to the new textrun directly.
   1.125 +       // The second word is not in the cache 
   1.126 +       const char cString2[] = "\xd8\xaa\xd9\x85\n\xd8\xaa\xd8\x85 ";
   1.127 +       nsDependentCString cStr2(cString2);
   1.128 +       NS_ConvertUTF8toUTF16 str2(cStr2);
   1.129 +       gfxTextRun *tr2 = MakeTextRun(str2.get(), str2.Length(), fontGroup, &params, flags);
   1.130 +       tr2->GetAdvanceWidth(0, str2.Length(), nullptr);
   1.131 +   }
   1.132 +
   1.133 +   delete gTextRuns;
   1.134 +   gTextRuns = nullptr;
   1.135 +
   1.136 +}