зеркало из https://github.com/mozilla/gecko-dev.git
158 строки
4.5 KiB
C++
158 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "nsTArray.h"
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#include "nsString.h"
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#include "nsDependentString.h"
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#include "prinrval.h"
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#include "gfxContext.h"
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#include "gfxFont.h"
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#include "gfxPlatform.h"
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#include "gfxFontTest.h"
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#include "mozilla/Attributes.h"
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#if defined(XP_MACOSX)
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#include "gfxTestCocoaHelper.h"
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#endif
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#ifdef MOZ_WIDGET_GTK
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#include "gtk/gtk.h"
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#endif
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class FrameTextRunCache;
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static FrameTextRunCache *gTextRuns = nullptr;
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/*
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* Cache textruns and expire them after 3*10 seconds of no use.
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*/
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class FrameTextRunCache MOZ_FINAL : public nsExpirationTracker<gfxTextRun,3> {
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public:
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enum { TIMEOUT_SECONDS = 10 };
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FrameTextRunCache()
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: nsExpirationTracker<gfxTextRun,3>(TIMEOUT_SECONDS*1000) {}
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~FrameTextRunCache() {
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AgeAllGenerations();
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}
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void RemoveFromCache(gfxTextRun* aTextRun) {
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if (aTextRun->GetExpirationState()->IsTracked()) {
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RemoveObject(aTextRun);
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}
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}
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// This gets called when the timeout has expired on a gfxTextRun
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virtual void NotifyExpired(gfxTextRun* aTextRun) {
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RemoveFromCache(aTextRun);
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delete aTextRun;
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}
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};
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static gfxTextRun *
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MakeTextRun(const PRUnichar *aText, uint32_t aLength,
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gfxFontGroup *aFontGroup, const gfxFontGroup::Parameters* aParams,
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uint32_t aFlags)
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{
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nsAutoPtr<gfxTextRun> textRun;
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if (aLength == 0) {
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textRun = aFontGroup->MakeEmptyTextRun(aParams, aFlags);
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} else if (aLength == 1 && aText[0] == ' ') {
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textRun = aFontGroup->MakeSpaceTextRun(aParams, aFlags);
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} else {
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textRun = aFontGroup->MakeTextRun(aText, aLength, aParams, aFlags);
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}
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if (!textRun)
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return nullptr;
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nsresult rv = gTextRuns->AddObject(textRun);
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if (NS_FAILED(rv)) {
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gTextRuns->RemoveFromCache(textRun);
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return nullptr;
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}
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return textRun.forget();
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}
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already_AddRefed<gfxContext>
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MakeContext ()
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{
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const int size = 200;
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nsRefPtr<gfxASurface> surface;
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surface = gfxPlatform::GetPlatform()->
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CreateOffscreenSurface(gfxIntSize(size, size),
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gfxASurface::ContentFromFormat(gfxASurface::ImageFormatRGB24));
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gfxContext *ctx = new gfxContext(surface);
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NS_IF_ADDREF(ctx);
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return ctx;
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}
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int
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main (int argc, char **argv) {
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#ifdef MOZ_WIDGET_GTK
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gtk_init(&argc, &argv);
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#endif
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#ifdef XP_MACOSX
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CocoaPoolInit();
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#endif
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// Initialize XPCOM
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nsresult rv = NS_InitXPCOM2(nullptr, nullptr, nullptr);
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if (NS_FAILED(rv))
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return -1;
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if (!gfxPlatform::GetPlatform())
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return -1;
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// let's get all the xpcom goop out of the system
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fflush (stderr);
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fflush (stdout);
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gTextRuns = new FrameTextRunCache();
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nsRefPtr<gfxContext> ctx = MakeContext();
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{
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gfxFontStyle style (FONT_STYLE_NORMAL,
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NS_FONT_STRETCH_NORMAL,
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139,
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10.0,
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NS_NewPermanentAtom(NS_LITERAL_STRING("en")),
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0.0,
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false, false, false,
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NS_LITERAL_STRING(""));
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nsRefPtr<gfxFontGroup> fontGroup =
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gfxPlatform::GetPlatform()->CreateFontGroup(NS_LITERAL_STRING("Geneva, MS Sans Serif, Helvetica,serif"), &style, nullptr);
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gfxTextRunFactory::Parameters params = {
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ctx, nullptr, nullptr, nullptr, 0, 60
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};
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uint32_t flags = gfxTextRunFactory::TEXT_IS_PERSISTENT;
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// First load an Arabic word into the cache
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const char cString[] = "\xd8\xaa\xd9\x85";
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nsDependentCString cStr(cString);
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NS_ConvertUTF8toUTF16 str(cStr);
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gfxTextRun *tr = MakeTextRun(str.get(), str.Length(), fontGroup, ¶ms, flags);
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tr->GetAdvanceWidth(0, str.Length(), nullptr);
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// Now try to trigger an assertion with a word cache bug. The first
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// word is in the cache so it gets added to the new textrun directly.
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// The second word is not in the cache
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const char cString2[] = "\xd8\xaa\xd9\x85\n\xd8\xaa\xd8\x85 ";
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nsDependentCString cStr2(cString2);
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NS_ConvertUTF8toUTF16 str2(cStr2);
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gfxTextRun *tr2 = MakeTextRun(str2.get(), str2.Length(), fontGroup, ¶ms, flags);
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tr2->GetAdvanceWidth(0, str2.Length(), nullptr);
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}
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fflush (stderr);
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fflush (stdout);
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}
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