203 lines
7.3 KiB
C++
203 lines
7.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtWidgets module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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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 https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://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 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSIZEPOLICY_H
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#define QSIZEPOLICY_H
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#include <QtWidgets/qtwidgetsglobal.h>
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#include <QtCore/qobject.h>
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QT_BEGIN_NAMESPACE
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// gcc < 4.8.0 has problems with init'ing variant members in constexpr ctors
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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54922
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#if !defined(Q_CC_GNU) || defined(Q_CC_INTEL) || defined(Q_CC_CLANG) || Q_CC_GNU >= 408
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# define QT_SIZEPOLICY_CONSTEXPR Q_DECL_CONSTEXPR
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#endif
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#ifndef QT_SIZEPOLICY_CONSTEXPR
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# define QT_SIZEPOLICY_CONSTEXPR
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#endif
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class QVariant;
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class QSizePolicy;
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Q_DECL_CONST_FUNCTION inline uint qHash(QSizePolicy key, uint seed = 0) Q_DECL_NOTHROW;
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class Q_WIDGETS_EXPORT QSizePolicy
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{
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Q_GADGET
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public:
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enum PolicyFlag {
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GrowFlag = 1,
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ExpandFlag = 2,
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ShrinkFlag = 4,
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IgnoreFlag = 8
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};
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enum Policy {
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Fixed = 0,
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Minimum = GrowFlag,
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Maximum = ShrinkFlag,
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Preferred = GrowFlag | ShrinkFlag,
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MinimumExpanding = GrowFlag | ExpandFlag,
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Expanding = GrowFlag | ShrinkFlag | ExpandFlag,
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Ignored = ShrinkFlag | GrowFlag | IgnoreFlag
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};
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Q_ENUM(Policy)
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enum ControlType {
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DefaultType = 0x00000001,
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ButtonBox = 0x00000002,
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CheckBox = 0x00000004,
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ComboBox = 0x00000008,
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Frame = 0x00000010,
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GroupBox = 0x00000020,
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Label = 0x00000040,
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Line = 0x00000080,
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LineEdit = 0x00000100,
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PushButton = 0x00000200,
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RadioButton = 0x00000400,
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Slider = 0x00000800,
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SpinBox = 0x00001000,
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TabWidget = 0x00002000,
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ToolButton = 0x00004000
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};
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Q_DECLARE_FLAGS(ControlTypes, ControlType)
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Q_FLAG(ControlTypes)
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QT_SIZEPOLICY_CONSTEXPR QSizePolicy() : data(0) { }
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QSizePolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType)
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: data(0) {
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bits.horPolicy = horizontal;
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bits.verPolicy = vertical;
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setControlType(type);
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}
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QT_SIZEPOLICY_CONSTEXPR Policy horizontalPolicy() const { return static_cast<Policy>(bits.horPolicy); }
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QT_SIZEPOLICY_CONSTEXPR Policy verticalPolicy() const { return static_cast<Policy>(bits.verPolicy); }
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ControlType controlType() const;
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void setHorizontalPolicy(Policy d) { bits.horPolicy = d; }
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void setVerticalPolicy(Policy d) { bits.verPolicy = d; }
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void setControlType(ControlType type);
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QT_SIZEPOLICY_CONSTEXPR Qt::Orientations expandingDirections() const {
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return ( (verticalPolicy() & ExpandFlag) ? Qt::Vertical : Qt::Orientations() )
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| ( (horizontalPolicy() & ExpandFlag) ? Qt::Horizontal : Qt::Orientations() ) ;
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}
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void setHeightForWidth(bool b) { bits.hfw = b; }
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QT_SIZEPOLICY_CONSTEXPR bool hasHeightForWidth() const { return bits.hfw; }
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void setWidthForHeight(bool b) { bits.wfh = b; }
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QT_SIZEPOLICY_CONSTEXPR bool hasWidthForHeight() const { return bits.wfh; }
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QT_SIZEPOLICY_CONSTEXPR bool operator==(const QSizePolicy& s) const { return data == s.data; }
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QT_SIZEPOLICY_CONSTEXPR bool operator!=(const QSizePolicy& s) const { return data != s.data; }
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friend Q_DECL_CONST_FUNCTION uint qHash(QSizePolicy key, uint seed) Q_DECL_NOTHROW { return qHash(key.data, seed); }
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operator QVariant() const;
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QT_SIZEPOLICY_CONSTEXPR int horizontalStretch() const { return static_cast<int>(bits.horStretch); }
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QT_SIZEPOLICY_CONSTEXPR int verticalStretch() const { return static_cast<int>(bits.verStretch); }
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void setHorizontalStretch(int stretchFactor) { bits.horStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
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void setVerticalStretch(int stretchFactor) { bits.verStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
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QT_SIZEPOLICY_CONSTEXPR bool retainSizeWhenHidden() const { return bits.retainSizeWhenHidden; }
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void setRetainSizeWhenHidden(bool retainSize) { bits.retainSizeWhenHidden = retainSize; }
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void transpose();
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private:
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#ifndef QT_NO_DATASTREAM
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friend Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
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friend Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
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#endif
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QT_SIZEPOLICY_CONSTEXPR QSizePolicy(int i) : data(i) { }
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struct Bits {
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quint32 horStretch : 8;
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quint32 verStretch : 8;
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quint32 horPolicy : 4;
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quint32 verPolicy : 4;
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quint32 ctype : 5;
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quint32 hfw : 1;
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quint32 wfh : 1;
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quint32 retainSizeWhenHidden : 1;
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};
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union {
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Bits bits;
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quint32 data;
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};
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};
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#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
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// Can't add in Qt 5, as QList<QSizePolicy> would be BiC:
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Q_DECLARE_TYPEINFO(QSizePolicy, Q_PRIMITIVE_TYPE);
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#endif
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Q_DECLARE_OPERATORS_FOR_FLAGS(QSizePolicy::ControlTypes)
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#ifndef QT_NO_DATASTREAM
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Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
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Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
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#endif
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#ifndef QT_NO_DEBUG_STREAM
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Q_WIDGETS_EXPORT QDebug operator<<(QDebug dbg, const QSizePolicy &);
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#endif
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inline void QSizePolicy::transpose() {
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Policy hData = horizontalPolicy();
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Policy vData = verticalPolicy();
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int hStretch = horizontalStretch();
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int vStretch = verticalStretch();
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setHorizontalPolicy(vData);
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setVerticalPolicy(hData);
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setHorizontalStretch(vStretch);
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setVerticalStretch(hStretch);
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}
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#undef QT_SIZEPOLICY_CONSTEXPR
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QT_END_NAMESPACE
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#endif // QSIZEPOLICY_H
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