| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Quick Layouts module 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 |
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| ** information use the contact form at http://www.qt.io/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 |
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| ** |
| ** As a special exception, The Qt Company gives you certain additional |
| ** rights. These rights are described in The Qt Company LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QLAYOUTPOLICY_H |
| #define QLAYOUTPOLICY_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #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 |