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Diffstat (limited to 'src/gui/util/qlayoutpolicy.cpp')
| -rw-r--r-- | src/gui/util/qlayoutpolicy.cpp | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/gui/util/qlayoutpolicy.cpp b/src/gui/util/qlayoutpolicy.cpp new file mode 100644 index 0000000000..9a154768eb --- /dev/null +++ b/src/gui/util/qlayoutpolicy.cpp @@ -0,0 +1,136 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Quick Layouts module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 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, 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. +** +** 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qlayoutpolicy_p.h" +#include <QtCore/qdebug.h> +#include <QtCore/qdatastream.h> + +QT_BEGIN_NAMESPACE + +void QLayoutPolicy::setControlType(ControlType type) +{ + /* + The control type is a flag type, with values 0x1, 0x2, 0x4, 0x8, 0x10, + etc. In memory, we pack it onto the available bits (CTSize) in + setControlType(), and unpack it here. + + Example: + + 0x00000001 maps to 0 + 0x00000002 maps to 1 + 0x00000004 maps to 2 + 0x00000008 maps to 3 + etc. + */ + + int i = 0; + while (true) { + if (type & (0x1 << i)) { + bits.ctype = i; + return; + } + ++i; + } +} + +QLayoutPolicy::ControlType QLayoutPolicy::controlType() const +{ + return QLayoutPolicy::ControlType(1 << bits.ctype); +} + +#ifndef QT_NO_DATASTREAM + +/*! + \relates QLayoutPolicy + + Writes the size \a policy to the data stream \a stream. + + \sa{Serializing Qt Data Types}{Format of the QDataStream operators} +*/ +QDataStream &operator<<(QDataStream &stream, const QLayoutPolicy &policy) +{ + // The order here is for historical reasons. (compatibility with Qt4) + quint32 data = (policy.bits.horPolicy | // [0, 3] + policy.bits.verPolicy << 4 | // [4, 7] + policy.bits.hfw << 8 | // [8] + policy.bits.ctype << 9 | // [9, 13] + policy.bits.wfh << 14 | // [14] + //policy.bits.padding << 15 | // [15] + policy.bits.verStretch << 16 | // [16, 23] + policy.bits.horStretch << 24); // [24, 31] + return stream << data; +} + +#define VALUE_OF_BITS(data, bitstart, bitcount) ((data >> bitstart) & ((1 << bitcount) -1)) + +/*! + \relates QLayoutPolicy + + Reads the size \a policy from the data stream \a stream. + + \sa{Serializing Qt Data Types}{Format of the QDataStream operators} +*/ +QDataStream &operator>>(QDataStream &stream, QLayoutPolicy &policy) +{ + quint32 data; + stream >> data; + policy.bits.horPolicy = VALUE_OF_BITS(data, 0, 4); + policy.bits.verPolicy = VALUE_OF_BITS(data, 4, 4); + policy.bits.hfw = VALUE_OF_BITS(data, 8, 1); + policy.bits.ctype = VALUE_OF_BITS(data, 9, 5); + policy.bits.wfh = VALUE_OF_BITS(data, 14, 1); + policy.bits.padding = 0; + policy.bits.verStretch = VALUE_OF_BITS(data, 16, 8); + policy.bits.horStretch = VALUE_OF_BITS(data, 24, 8); + return stream; +} +#endif // QT_NO_DATASTREAM + +#ifndef QT_NO_DEBUG_STREAM +QDebug operator<<(QDebug dbg, const QLayoutPolicy &p) +{ + dbg.nospace() << "QLayoutPolicy(horizontalPolicy = " << p.horizontalPolicy() + << ", verticalPolicy = " << p.verticalPolicy() << ')'; + return dbg.space(); +} +#endif + +QT_END_NAMESPACE |