michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "gtest/gtest.h"
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsTArray.h"
michael@0: #include "nsString.h"
michael@0: #include "nsDependentString.h"
michael@0: 
michael@0: #include "prinrval.h"
michael@0: 
michael@0: #include "gfxContext.h"
michael@0: #include "gfxFont.h"
michael@0: #include "gfxPlatform.h"
michael@0: 
michael@0: #include "gfxFontTest.h"
michael@0: #include "mozilla/Attributes.h"
michael@0: 
michael@0: class FrameTextRunCache;
michael@0: 
michael@0: static FrameTextRunCache *gTextRuns = nullptr;
michael@0: 
michael@0: /*
michael@0:  * Cache textruns and expire them after 3*10 seconds of no use.
michael@0:  */
michael@0: class FrameTextRunCache MOZ_FINAL : public nsExpirationTracker<gfxTextRun,3> {
michael@0: public:
michael@0:  enum { TIMEOUT_SECONDS = 10 };
michael@0:  FrameTextRunCache()
michael@0:      : nsExpirationTracker<gfxTextRun,3>(TIMEOUT_SECONDS*1000) {}
michael@0:  ~FrameTextRunCache() {
michael@0:    AgeAllGenerations();
michael@0:  }
michael@0: 
michael@0:  void RemoveFromCache(gfxTextRun* aTextRun) {
michael@0:    if (aTextRun->GetExpirationState()->IsTracked()) {
michael@0:      RemoveObject(aTextRun);
michael@0:    }
michael@0:  }
michael@0: 
michael@0:  // This gets called when the timeout has expired on a gfxTextRun
michael@0:  virtual void NotifyExpired(gfxTextRun* aTextRun) {
michael@0:    RemoveFromCache(aTextRun);
michael@0:    delete aTextRun;
michael@0:  }
michael@0: };
michael@0: 
michael@0: static gfxTextRun *
michael@0: MakeTextRun(const char16_t *aText, uint32_t aLength,
michael@0:            gfxFontGroup *aFontGroup, const gfxFontGroup::Parameters* aParams,
michael@0:            uint32_t aFlags)
michael@0: {
michael@0:    nsAutoPtr<gfxTextRun> textRun;
michael@0:    if (aLength == 0) {
michael@0:        abort();
michael@0:        //textRun = aFontGroup->MakeEmptyTextRun(aParams, aFlags);
michael@0:    } else if (aLength == 1 && aText[0] == ' ') {
michael@0:        abort();
michael@0:        //textRun = aFontGroup->MakeSpaceTextRun(aParams, aFlags);
michael@0:    } else {
michael@0:        textRun = aFontGroup->MakeTextRun(aText, aLength, aParams, aFlags);
michael@0:    }
michael@0:    if (!textRun)
michael@0:        return nullptr;
michael@0:    nsresult rv = gTextRuns->AddObject(textRun);
michael@0:    if (NS_FAILED(rv)) {
michael@0:        gTextRuns->RemoveFromCache(textRun);
michael@0:        return nullptr;
michael@0:    }
michael@0:    return textRun.forget();
michael@0: }
michael@0: 
michael@0: static already_AddRefed<gfxContext>
michael@0: MakeContext ()
michael@0: {
michael@0:    const int size = 200;
michael@0: 
michael@0:    nsRefPtr<gfxASurface> surface;
michael@0: 
michael@0:    surface = gfxPlatform::GetPlatform()->
michael@0:        CreateOffscreenSurface(IntSize(size, size),
michael@0:                               gfxASurface::ContentFromFormat(gfxImageFormat::RGB24));
michael@0:    nsRefPtr<gfxContext> ctx = new gfxContext(surface);
michael@0:    return ctx.forget();
michael@0: }
michael@0: 
michael@0: TEST(Gfx, WordCache) {
michael@0:    gTextRuns = new FrameTextRunCache();
michael@0: 
michael@0:    nsRefPtr<gfxContext> ctx = MakeContext();
michael@0:    {
michael@0:        gfxFontStyle style (mozilla::gfx::FontStyle::NORMAL,
michael@0:                            139,
michael@0:                            10.0,
michael@0:                            0,
michael@0:                            NS_NewPermanentAtom(NS_LITERAL_STRING("en")),
michael@0:                            0.0,
michael@0:                            false, false,
michael@0:                            NS_LITERAL_STRING(""));
michael@0: 
michael@0:        nsRefPtr<gfxFontGroup> fontGroup =
michael@0:            gfxPlatform::GetPlatform()->CreateFontGroup(NS_LITERAL_STRING("Geneva, MS Sans Serif, Helvetica,serif"), &style, nullptr);
michael@0: 
michael@0:        gfxTextRunFactory::Parameters params = {
michael@0:            ctx, nullptr, nullptr, nullptr, 0, 60
michael@0:        };
michael@0: 
michael@0:        uint32_t flags = gfxTextRunFactory::TEXT_IS_PERSISTENT;
michael@0: 
michael@0:        // First load an Arabic word into the cache
michael@0:        const char cString[] = "\xd8\xaa\xd9\x85";
michael@0:        nsDependentCString cStr(cString);
michael@0:        NS_ConvertUTF8toUTF16 str(cStr);
michael@0:        gfxTextRun *tr = MakeTextRun(str.get(), str.Length(), fontGroup, &params, flags);
michael@0:        tr->GetAdvanceWidth(0, str.Length(), nullptr);
michael@0: 
michael@0:        // Now try to trigger an assertion with a word cache bug. The first
michael@0:        // word is in the cache so it gets added to the new textrun directly.
michael@0:        // The second word is not in the cache 
michael@0:        const char cString2[] = "\xd8\xaa\xd9\x85\n\xd8\xaa\xd8\x85 ";
michael@0:        nsDependentCString cStr2(cString2);
michael@0:        NS_ConvertUTF8toUTF16 str2(cStr2);
michael@0:        gfxTextRun *tr2 = MakeTextRun(str2.get(), str2.Length(), fontGroup, &params, flags);
michael@0:        tr2->GetAdvanceWidth(0, str2.Length(), nullptr);
michael@0:    }
michael@0: 
michael@0:    delete gTextRuns;
michael@0:    gTextRuns = nullptr;
michael@0: 
michael@0: }