83a5694dc2
Qt copyrights are now in The Qt Company, so we could update the source code headers accordingly. In the same go we should also fix the links to point to qt.io. Outdated header.LGPL removed (use header.LGPL21 instead) Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing combination. New header.LGPL-COMM taken in the use file which were using old header.LGPL3 (src/plugins/platforms/android/extract.cpp) Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license combination Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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#include <qfont.h>
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#include <private/qfont_p.h>
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#include <private/qfontengine_p.h>
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class tst_QFontCache : public QObject
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{
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Q_OBJECT
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public:
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tst_QFontCache();
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virtual ~tst_QFontCache();
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private slots:
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void clear();
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};
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QT_BEGIN_NAMESPACE
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extern void qt_setQtEnableTestFont(bool value); // qfontdatabase.cpp
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#ifdef QT_BUILD_INTERNAL
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// qfontengine.cpp
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extern void QFontEngine_startCollectingEngines();
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extern QList<QFontEngine *> QFontEngine_stopCollectingEngines();
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#endif
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QT_END_NAMESPACE
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tst_QFontCache::tst_QFontCache()
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{
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}
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tst_QFontCache::~tst_QFontCache()
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{
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}
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void tst_QFontCache::clear()
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{
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#ifdef QT_BUILD_INTERNAL
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QFontEngine_startCollectingEngines();
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#else
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// must not crash, at very least ;)
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#endif
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QFontEngine *fontEngine = 0;
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{
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// we're never caching the box (and the "test") font engines
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// let's ensure we're not leaking them as well as the cached ones
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qt_setQtEnableTestFont(true);
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QFont f;
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f.setFamily("__Qt__Box__Engine__");
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f.exactMatch(); // loads engine
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}
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{
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QFontDatabase db;
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QFont f;
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f.setStyleHint(QFont::Serif);
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const QString familyForHint(f.defaultFamily());
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// it should at least return a family that is available
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QVERIFY(db.hasFamily(familyForHint));
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f.exactMatch(); // loads engine
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fontEngine = QFontPrivate::get(f)->engineForScript(QChar::Script_Common);
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QVERIFY(fontEngine);
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QVERIFY(QFontCache::instance()->engineCacheCount.value(fontEngine) > 0); // ensure it is cached
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// acquire the engine to use it somewhere else:
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// (e.g. like the we do in QFontSubset() or like QRawFont does in fromFont())
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fontEngine->ref.ref();
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// cache the engine once again; there is a special case when the engine is cached more than once
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QFontCache::instance()->insertEngine(QFontCache::Key(QFontDef(), 0, 0), fontEngine);
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}
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// use it:
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// e.g. fontEngine->stringToCMap(..);
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// and whilst it is alive, don't hesitate to add/remove the app-local fonts:
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// (QFontDatabase::{add,remove}ApplicationFont() clears the cache)
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QFontCache::instance()->clear();
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// release the acquired engine:
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if (fontEngine) {
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if (!fontEngine->ref.deref())
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delete fontEngine;
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fontEngine = 0;
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}
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// we may even exit the application now:
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QFontCache::instance()->cleanup();
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#ifdef QT_BUILD_INTERNAL
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QList<QFontEngine *> leakedEngines = QFontEngine_stopCollectingEngines();
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for (int i = 0; i < leakedEngines.size(); ++i) qWarning() << i << leakedEngines.at(i) << leakedEngines.at(i)->ref.load();
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// and we are not leaking!
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QCOMPARE(leakedEngines.size(), 0);
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#endif
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}
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QTEST_MAIN(tst_QFontCache)
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#include "tst_qfontcache.moc"
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