974c210835
- Renamed LICENSE.LGPL to LICENSE.LGPLv21 - Added LICENSE.LGPLv3 - Removed LICENSE.GPL Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2 Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of the test suite of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL21$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and Digia. For licensing terms and
|
|
** conditions see http://qt.digia.com/licensing. For further information
|
|
** use the contact form at http://qt.digia.com/contact-us.
|
|
**
|
|
** GNU Lesser General Public License Usage
|
|
** Alternatively, this file may be used under the terms of the GNU Lesser
|
|
** General Public License version 2.1 or version 3 as published by the Free
|
|
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
|
|
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
|
|
** following information to ensure the GNU Lesser General Public License
|
|
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
|
|
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
|
**
|
|
** In addition, as a special exception, Digia gives you certain additional
|
|
** rights. These rights are described in the Digia Qt LGPL Exception
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
|
|
#include <QtTest/QtTest>
|
|
|
|
|
|
#include <qfont.h>
|
|
#include <private/qfont_p.h>
|
|
#include <private/qfontengine_p.h>
|
|
|
|
class tst_QFontCache : public QObject
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
tst_QFontCache();
|
|
virtual ~tst_QFontCache();
|
|
|
|
private slots:
|
|
void clear();
|
|
};
|
|
|
|
QT_BEGIN_NAMESPACE
|
|
extern void qt_setQtEnableTestFont(bool value); // qfontdatabase.cpp
|
|
|
|
#ifdef QT_BUILD_INTERNAL
|
|
// qfontengine.cpp
|
|
extern void QFontEngine_startCollectingEngines();
|
|
extern QList<QFontEngine *> QFontEngine_stopCollectingEngines();
|
|
#endif
|
|
QT_END_NAMESPACE
|
|
|
|
tst_QFontCache::tst_QFontCache()
|
|
{
|
|
}
|
|
|
|
tst_QFontCache::~tst_QFontCache()
|
|
{
|
|
}
|
|
|
|
void tst_QFontCache::clear()
|
|
{
|
|
#ifdef QT_BUILD_INTERNAL
|
|
QFontEngine_startCollectingEngines();
|
|
#else
|
|
// must not crash, at very least ;)
|
|
#endif
|
|
|
|
QFontEngine *fontEngine = 0;
|
|
|
|
{
|
|
// we're never caching the box (and the "test") font engines
|
|
// let's ensure we're not leaking them as well as the cached ones
|
|
qt_setQtEnableTestFont(true);
|
|
|
|
QFont f;
|
|
f.setFamily("__Qt__Box__Engine__");
|
|
f.exactMatch(); // loads engine
|
|
}
|
|
{
|
|
QFontDatabase db;
|
|
|
|
QFont f;
|
|
f.setStyleHint(QFont::Serif);
|
|
const QString familyForHint(f.defaultFamily());
|
|
|
|
// it should at least return a family that is available
|
|
QVERIFY(db.hasFamily(familyForHint));
|
|
f.exactMatch(); // loads engine
|
|
|
|
fontEngine = QFontPrivate::get(f)->engineForScript(QChar::Script_Common);
|
|
QVERIFY(fontEngine);
|
|
QVERIFY(QFontCache::instance()->engineCacheCount.value(fontEngine) > 0); // ensure it is cached
|
|
|
|
// acquire the engine to use it somewhere else:
|
|
// (e.g. like the we do in QFontSubset() or like QRawFont does in fromFont())
|
|
fontEngine->ref.ref();
|
|
|
|
// cache the engine once again; there is a special case when the engine is cached more than once
|
|
QFontCache::instance()->insertEngine(QFontCache::Key(QFontDef(), 0, 0), fontEngine);
|
|
}
|
|
|
|
// use it:
|
|
// e.g. fontEngine->stringToCMap(..);
|
|
|
|
// and whilst it is alive, don't hesitate to add/remove the app-local fonts:
|
|
// (QFontDatabase::{add,remove}ApplicationFont() clears the cache)
|
|
QFontCache::instance()->clear();
|
|
|
|
// release the acquired engine:
|
|
if (fontEngine) {
|
|
if (!fontEngine->ref.deref())
|
|
delete fontEngine;
|
|
fontEngine = 0;
|
|
}
|
|
|
|
// we may even exit the application now:
|
|
QFontCache::instance()->cleanup();
|
|
|
|
#ifdef QT_BUILD_INTERNAL
|
|
QList<QFontEngine *> leakedEngines = QFontEngine_stopCollectingEngines();
|
|
for (int i = 0; i < leakedEngines.size(); ++i) qWarning() << i << leakedEngines.at(i) << leakedEngines.at(i)->ref.load();
|
|
// and we are not leaking!
|
|
QCOMPARE(leakedEngines.size(), 0);
|
|
#endif
|
|
}
|
|
|
|
QTEST_MAIN(tst_QFontCache)
|
|
#include "tst_qfontcache.moc"
|