1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSIZEPOLICY_H
#define QSIZEPOLICY_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qobject.h>
#include <QtCore/qalgorithms.h>
#include <QtCore/qhashfunctions.h>
QT_BEGIN_NAMESPACE
class QVariant;
class QSizePolicy;
class Q_WIDGETS_EXPORT QSizePolicy
{
Q_GADGET
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
};
Q_ENUM(Policy)
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)
Q_FLAG(ControlTypes)
constexpr QSizePolicy() noexcept : data(0) { }
constexpr QSizePolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType) noexcept
: bits{0, 0, quint32(horizontal), quint32(vertical),
type == DefaultType ? 0 : toControlTypeFieldValue(type), 0, 0, 0}
{}
constexpr Policy horizontalPolicy() const noexcept { return static_cast<Policy>(bits.horPolicy); }
constexpr Policy verticalPolicy() const noexcept { return static_cast<Policy>(bits.verPolicy); }
ControlType controlType() const noexcept;
constexpr void setHorizontalPolicy(Policy d) noexcept { bits.horPolicy = d; }
constexpr void setVerticalPolicy(Policy d) noexcept { bits.verPolicy = d; }
void setControlType(ControlType type) noexcept;
// ### Qt 7: consider making Policy a QFlags and removing these casts
constexpr Qt::Orientations expandingDirections() const noexcept {
return ( (verticalPolicy() & static_cast<Policy>(ExpandFlag)) ? Qt::Vertical : Qt::Orientations() )
| ( (horizontalPolicy() & static_cast<Policy>(ExpandFlag)) ? Qt::Horizontal : Qt::Orientations() ) ;
}
constexpr void setHeightForWidth(bool b) noexcept { bits.hfw = b; }
constexpr bool hasHeightForWidth() const noexcept { return bits.hfw; }
constexpr void setWidthForHeight(bool b) noexcept { bits.wfh = b; }
constexpr bool hasWidthForHeight() const noexcept { return bits.wfh; }
constexpr bool operator==(const QSizePolicy& s) const noexcept { return data == s.data; }
constexpr bool operator!=(const QSizePolicy& s) const noexcept { return data != s.data; }
friend Q_DECL_CONST_FUNCTION size_t qHash(QSizePolicy key, size_t seed = 0) noexcept { return qHash(key.data, seed); }
operator QVariant() const;
constexpr int horizontalStretch() const noexcept { return static_cast<int>(bits.horStretch); }
constexpr int verticalStretch() const noexcept { return static_cast<int>(bits.verStretch); }
constexpr void setHorizontalStretch(int stretchFactor) { bits.horStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
constexpr void setVerticalStretch(int stretchFactor) { bits.verStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
constexpr bool retainSizeWhenHidden() const noexcept { return bits.retainSizeWhenHidden; }
constexpr void setRetainSizeWhenHidden(bool retainSize) noexcept { bits.retainSizeWhenHidden = retainSize; }
constexpr void transpose() noexcept { *this = transposed(); }
[[nodiscard]] constexpr QSizePolicy transposed() const noexcept
{
return QSizePolicy(bits.transposed());
}
private:
#ifndef QT_NO_DATASTREAM
friend Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
friend Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
#endif
constexpr QSizePolicy(int i) noexcept : data(i) { }
struct Bits;
constexpr explicit QSizePolicy(Bits b) noexcept : bits(b) { }
static constexpr quint32 toControlTypeFieldValue(ControlType type) noexcept
{
/*
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.
*/
return qCountTrailingZeroBits(static_cast<quint32>(type));
}
struct Bits {
quint32 horStretch : 8;
quint32 verStretch : 8;
quint32 horPolicy : 4;
quint32 verPolicy : 4;
quint32 ctype : 5;
quint32 hfw : 1;
quint32 wfh : 1;
quint32 retainSizeWhenHidden : 1;
constexpr Bits transposed() const noexcept
{
return {verStretch, // \ swap
horStretch, // /
verPolicy, // \ swap
horPolicy, // /
ctype,
hfw, // \ don't swap (historic behavior)
wfh, // /
retainSizeWhenHidden};
}
};
union {
Bits bits;
quint32 data;
};
};
Q_DECLARE_TYPEINFO(QSizePolicy, Q_PRIMITIVE_TYPE);
Q_DECLARE_OPERATORS_FOR_FLAGS(QSizePolicy::ControlTypes)
Q_DECLARE_MIXED_ENUM_OPERATORS(int, QSizePolicy::Policy, QSizePolicy::PolicyFlag)
#ifndef QT_NO_DATASTREAM
Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
#endif
#ifndef QT_NO_DEBUG_STREAM
Q_WIDGETS_EXPORT QDebug operator<<(QDebug dbg, const QSizePolicy &);
#endif
QT_END_NAMESPACE
#endif // QSIZEPOLICY_H
|
