diff options
author | Aaron Kennedy <aaron.kennedy@nokia.com> | 2011-11-28 16:04:33 +0000 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2011-12-05 15:33:30 +0100 |
commit | 5ac2990688c7da6ce872bccc5c08129267887d68 (patch) | |
tree | 4099c1f9e415dc3efda5ea97385a5a76824375c6 /src/declarative/qml/qdeclarativeaccessors.cpp | |
parent | 5c9179b19776808acecab4805b10932dc4f9511a (diff) |
Introduce more generic fast property handling
Also reduce the number of direct calls to qt_metacall().
Change-Id: I04cd6e516a3e61058548309a19fe0b830f15c93f
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
Diffstat (limited to 'src/declarative/qml/qdeclarativeaccessors.cpp')
-rw-r--r-- | src/declarative/qml/qdeclarativeaccessors.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/declarative/qml/qdeclarativeaccessors.cpp b/src/declarative/qml/qdeclarativeaccessors.cpp new file mode 100644 index 0000000000..96521033b2 --- /dev/null +++ b/src/declarative/qml/qdeclarativeaccessors.cpp @@ -0,0 +1,127 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdeclarativeaccessors_p.h" + +#include "qdeclarativedata_p.h" +#include "qdeclarativenotifier_p.h" + +QT_BEGIN_NAMESPACE + +struct AccessorProperties { + AccessorProperties(); + + QReadWriteLock lock; + QHash<const QMetaObject *, QDeclarativeAccessorProperties::Properties> properties; +}; + +Q_GLOBAL_STATIC(AccessorProperties, accessorProperties) + +QML_PRIVATE_ACCESSOR(QObject, QString, objectName, objectName) + +static void QObject_objectNameNotifier(QObject *object, intptr_t, QDeclarativeNotifier **notifier) +{ + *notifier = QDeclarativeData::get(object, true)->objectNameNotifier(); +} + +static QDeclarativeAccessors QObject_objectName = { QObject_objectNameRead, + QObject_objectNameNotifier }; + +QML_DECLARE_PROPERTIES(QObject) { + { QML_PROPERTY_NAME(objectName), 0, &QObject_objectName } +}; + +static void buildNameMask(QDeclarativeAccessorProperties::Properties &properties) +{ + quint32 mask = 0; + + for (int ii = 0; ii < properties.count; ++ii) { + Q_ASSERT(strlen(properties.properties[ii].name) == properties.properties[ii].nameLength); + Q_ASSERT(properties.properties[ii].nameLength > 0); + + mask |= (1 << qMin(31U, properties.properties[ii].nameLength - 1)); + } + + properties.nameMask = mask; +} + +AccessorProperties::AccessorProperties() +{ + // Pre-seed QObject::objectName accessor + typedef QDeclarativeAccessorProperties::Properties P; + properties.insert(&QObject::staticMetaObject, + P(qdeclarative_accessor_properties_QObject, + sizeof(qdeclarative_accessor_properties_QObject) / + sizeof(QDeclarativeAccessorProperties::Property))); +} + +QDeclarativeAccessorProperties::Properties::Properties(Property *properties, int count) +: count(count), properties(properties) +{ + buildNameMask(*this); +} + +QDeclarativeAccessorProperties::Properties +QDeclarativeAccessorProperties::properties(const QMetaObject *mo) +{ + AccessorProperties *This = accessorProperties(); + + QReadLocker lock(&This->lock); + return This->properties.value(mo); +} + +void QDeclarativeAccessorProperties::registerProperties(const QMetaObject *mo, int count, + Property *props) +{ + Q_ASSERT(count > 0); + + Properties properties(props, count); + + AccessorProperties *This = accessorProperties(); + + QWriteLocker lock(&This->lock); + + Q_ASSERT(!This->properties.contains(mo) || This->properties.value(mo) == properties); + + This->properties.insert(mo, properties); +} + +QT_END_NAMESPACE |