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Diffstat (limited to 'src/gui/util/qlayoutpolicy_p.h')
| -rw-r--r-- | src/gui/util/qlayoutpolicy_p.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/gui/util/qlayoutpolicy_p.h b/src/gui/util/qlayoutpolicy_p.h new file mode 100644 index 0000000000..664afef1a4 --- /dev/null +++ b/src/gui/util/qlayoutpolicy_p.h @@ -0,0 +1,185 @@ +/**************************************************************************** +** +** 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QLAYOUTPOLICY_H +#define QLAYOUTPOLICY_H + +#include <QtCore/qobject.h> +#include <QtCore/qnamespace.h> + +#ifndef QT_NO_DATASTREAM +# include <QtCore/qdatastream.h> +#endif + +QT_BEGIN_NAMESPACE + + +class QVariant; + +class Q_GUI_EXPORT QLayoutPolicy +{ + Q_ENUMS(Policy) + +public: + enum PolicyFlag { + GrowFlag = 1, + ExpandFlag = 2, + ShrinkFlag = 4, + IgnoreFlag = 8 + }; + + enum Policy { + Fixed = 0, + Minimum = GrowFlag, + Maximum = ShrinkFlag, + Preferred = GrowFlag | ShrinkFlag, + MinimumExpanding = GrowFlag | ExpandFlag, + Expanding = GrowFlag | ShrinkFlag | ExpandFlag, + Ignored = ShrinkFlag | GrowFlag | IgnoreFlag + }; + + enum ControlType { + DefaultType = 0x00000001, + ButtonBox = 0x00000002, + CheckBox = 0x00000004, + ComboBox = 0x00000008, + Frame = 0x00000010, + GroupBox = 0x00000020, + Label = 0x00000040, + Line = 0x00000080, + LineEdit = 0x00000100, + PushButton = 0x00000200, + RadioButton = 0x00000400, + Slider = 0x00000800, + SpinBox = 0x00001000, + TabWidget = 0x00002000, + ToolButton = 0x00004000 + }; + Q_DECLARE_FLAGS(ControlTypes, ControlType) + + QLayoutPolicy() : data(0) { } + + QLayoutPolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType) + : data(0) { + bits.horPolicy = horizontal; + bits.verPolicy = vertical; + setControlType(type); + } + Policy horizontalPolicy() const { return static_cast<Policy>(bits.horPolicy); } + Policy verticalPolicy() const { return static_cast<Policy>(bits.verPolicy); } + ControlType controlType() const; + + void setHorizontalPolicy(Policy d) { bits.horPolicy = d; } + void setVerticalPolicy(Policy d) { bits.verPolicy = d; } + void setControlType(ControlType type); + + Qt::Orientations expandingDirections() const { + Qt::Orientations result; + if (verticalPolicy() & ExpandFlag) + result |= Qt::Vertical; + if (horizontalPolicy() & ExpandFlag) + result |= Qt::Horizontal; + return result; + } + + void setHeightForWidth(bool b) { bits.hfw = b; } + bool hasHeightForWidth() const { return bits.hfw; } + void setWidthForHeight(bool b) { bits.wfh = b; } + bool hasWidthForHeight() const { return bits.wfh; } + + bool operator==(const QLayoutPolicy& s) const { return data == s.data; } + bool operator!=(const QLayoutPolicy& s) const { return data != s.data; } + + int horizontalStretch() const { return static_cast<int>(bits.horStretch); } + int verticalStretch() const { return static_cast<int>(bits.verStretch); } + void setHorizontalStretch(int stretchFactor) { bits.horStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); } + void setVerticalStretch(int stretchFactor) { bits.verStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); } + + void transpose(); + + +private: +#ifndef QT_NO_DATASTREAM + friend QDataStream &operator<<(QDataStream &, const QLayoutPolicy &); + friend QDataStream &operator>>(QDataStream &, QLayoutPolicy &); +#endif + QLayoutPolicy(int i) : data(i) { } + + union { + struct { + quint32 horStretch : 8; + quint32 verStretch : 8; + quint32 horPolicy : 4; + quint32 verPolicy : 4; + quint32 ctype : 5; + quint32 hfw : 1; + quint32 wfh : 1; + quint32 padding : 1; // feel free to use + } bits; + quint32 data; + }; +}; + +Q_DECLARE_OPERATORS_FOR_FLAGS(QLayoutPolicy::ControlTypes) + +#ifndef QT_NO_DATASTREAM +QDataStream &operator<<(QDataStream &, const QLayoutPolicy &); +QDataStream &operator>>(QDataStream &, QLayoutPolicy &); +#endif + +#ifndef QT_NO_DEBUG_STREAM +QDebug operator<<(QDebug dbg, const QLayoutPolicy &); +#endif + +inline void QLayoutPolicy::transpose() { + Policy hData = horizontalPolicy(); + Policy vData = verticalPolicy(); + int hStretch = horizontalStretch(); + int vStretch = verticalStretch(); + setHorizontalPolicy(vData); + setVerticalPolicy(hData); + setHorizontalStretch(vStretch); + setVerticalStretch(hStretch); +} + +QT_END_NAMESPACE + +#endif // QLAYOUTPOLICY_H |