gecko/gfx/tests/gtest/gfxWordCacheTest.cpp

138 lines
4.1 KiB
C++

/* -*- 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/. */
#include "gtest/gtest.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/RefPtr.h"
#include "nsCOMPtr.h"
#include "nsTArray.h"
#include "nsString.h"
#include "nsDependentString.h"
#include "prinrval.h"
#include "gfxContext.h"
#include "gfxFont.h"
#include "gfxPlatform.h"
#include "gfxFontTest.h"
#include "mozilla/Attributes.h"
using namespace mozilla;
using namespace mozilla::gfx;
class FrameTextRunCache;
static FrameTextRunCache *gTextRuns = nullptr;
/*
* Cache textruns and expire them after 3*10 seconds of no use.
*/
class FrameTextRunCache MOZ_FINAL : public nsExpirationTracker<gfxTextRun,3> {
public:
enum { TIMEOUT_SECONDS = 10 };
FrameTextRunCache()
: nsExpirationTracker<gfxTextRun,3>(TIMEOUT_SECONDS*1000) {}
~FrameTextRunCache() {
AgeAllGenerations();
}
void RemoveFromCache(gfxTextRun* aTextRun) {
if (aTextRun->GetExpirationState()->IsTracked()) {
RemoveObject(aTextRun);
}
}
// This gets called when the timeout has expired on a gfxTextRun
virtual void NotifyExpired(gfxTextRun* aTextRun) {
RemoveFromCache(aTextRun);
delete aTextRun;
}
};
static gfxTextRun *
MakeTextRun(const char16_t *aText, uint32_t aLength,
gfxFontGroup *aFontGroup, const gfxFontGroup::Parameters* aParams,
uint32_t aFlags)
{
nsAutoPtr<gfxTextRun> textRun;
if (aLength == 0) {
abort();
//textRun = aFontGroup->MakeEmptyTextRun(aParams, aFlags);
} else if (aLength == 1 && aText[0] == ' ') {
abort();
//textRun = aFontGroup->MakeSpaceTextRun(aParams, aFlags);
} else {
textRun = aFontGroup->MakeTextRun(aText, aLength, aParams, aFlags);
}
if (!textRun)
return nullptr;
nsresult rv = gTextRuns->AddObject(textRun);
if (NS_FAILED(rv)) {
gTextRuns->RemoveFromCache(textRun);
return nullptr;
}
return textRun.forget();
}
static already_AddRefed<gfxContext>
MakeContext ()
{
const int size = 200;
RefPtr<DrawTarget> drawTarget = gfxPlatform::GetPlatform()->
CreateOffscreenContentDrawTarget(IntSize(size, size),
SurfaceFormat::B8G8R8X8);
nsRefPtr<gfxContext> ctx = new gfxContext(drawTarget);
return ctx.forget();
}
TEST(Gfx, WordCache) {
gTextRuns = new FrameTextRunCache();
nsRefPtr<gfxContext> ctx = MakeContext();
{
gfxFontStyle style (mozilla::gfx::FontStyle::NORMAL,
139,
10.0,
0,
NS_NewPermanentAtom(NS_LITERAL_STRING("en")),
0.0,
false, false,
NS_LITERAL_STRING(""));
nsRefPtr<gfxFontGroup> fontGroup =
gfxPlatform::GetPlatform()->CreateFontGroup(NS_LITERAL_STRING("Geneva, MS Sans Serif, Helvetica,serif"), &style, nullptr);
gfxTextRunFactory::Parameters params = {
ctx, nullptr, nullptr, nullptr, 0, 60
};
uint32_t flags = gfxTextRunFactory::TEXT_IS_PERSISTENT;
// First load an Arabic word into the cache
const char cString[] = "\xd8\xaa\xd9\x85";
nsDependentCString cStr(cString);
NS_ConvertUTF8toUTF16 str(cStr);
gfxTextRun *tr = MakeTextRun(str.get(), str.Length(), fontGroup, &params, flags);
tr->GetAdvanceWidth(0, str.Length(), nullptr);
// Now try to trigger an assertion with a word cache bug. The first
// word is in the cache so it gets added to the new textrun directly.
// The second word is not in the cache
const char cString2[] = "\xd8\xaa\xd9\x85\n\xd8\xaa\xd8\x85 ";
nsDependentCString cStr2(cString2);
NS_ConvertUTF8toUTF16 str2(cStr2);
gfxTextRun *tr2 = MakeTextRun(str2.get(), str2.Length(), fontGroup, &params, flags);
tr2->GetAdvanceWidth(0, str2.Length(), nullptr);
}
delete gTextRuns;
gTextRuns = nullptr;
}