1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QABSTRACTLAYOUTSTYLEINFO_P_H
41#define QABSTRACTLAYOUTSTYLEINFO_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtGui/private/qtguiglobal_p.h>
55#include <QtCore/qnamespace.h>
56#include "qlayoutpolicy_p.h"
57
58QT_BEGIN_NAMESPACE
59
60
61class Q_GUI_EXPORT QAbstractLayoutStyleInfo {
62public:
63
64 QAbstractLayoutStyleInfo() : m_isWindow(false) {}
65 virtual ~QAbstractLayoutStyleInfo() {}
66 virtual qreal combinedLayoutSpacing(QLayoutPolicy::ControlTypes /*controls1*/,
67 QLayoutPolicy::ControlTypes /*controls2*/, Qt::Orientation /*orientation*/) const {
68 return -1;
69 }
70
71 virtual qreal perItemSpacing(QLayoutPolicy::ControlType /*control1*/,
72 QLayoutPolicy::ControlType /*control2*/,
73 Qt::Orientation /*orientation*/) const {
74 return -1;
75 }
76
77 virtual qreal spacing(Qt::Orientation orientation) const = 0;
78
79 virtual bool hasChangedCore() const { return false; } // ### Remove when usage is gone from subclasses
80
81 virtual void invalidate() { }
82
83 virtual qreal windowMargin(Qt::Orientation orientation) const = 0;
84
85 bool isWindow() const {
86 return m_isWindow;
87 }
88
89protected:
90 unsigned m_isWindow : 1;
91 mutable unsigned m_hSpacingState: 2;
92 mutable unsigned m_vSpacingState: 2;
93 mutable qreal m_spacing[2];
94};
95
96QT_END_NAMESPACE
97
98#endif // QABSTRACTLAYOUTSTYLEINFO_P_H
99

source code of qtbase/src/gui/util/qabstractlayoutstyleinfo_p.h