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
|
#pragma once
#include "slider.hpp"
#include "export.hpp"
#include <cmath>
#include <type_traits>
#include <QString>
namespace options::detail {
template<typename t, typename u = t, typename Enable = void>
struct default_value_traits
{
using value_type = t;
using stored_type = u;
static inline
value_type value_with_default(cv_qualified<value_type> val, cv_qualified<value_type>)
{
return val;
}
static inline
value_type value_from_storage(cv_qualified<stored_type> x)
{
return static_cast<value_type>(x);
}
static inline
stored_type storage_from_value(cv_qualified<value_type> val)
{
return static_cast<stored_type>(val);
}
static inline
value_type value_from_qvariant(const QVariant& x)
{
return value_from_storage(storage_from_qvariant(x));
}
static inline
QVariant qvariant_from_value(cv_qualified<value_type> val)
{
return qvariant_from_storage(storage_from_value(val));
}
static constexpr inline
value_type pass_value(cv_qualified<value_type> x)
{
if constexpr(std::is_same_v<value_type, stored_type>)
return x;
else
return value_from_storage(storage_from_value(x));
}
static inline
stored_type storage_from_qvariant(const QVariant& x)
{
// XXX TODO
return x.value<stored_type>();
}
static inline
QVariant qvariant_from_storage(cv_qualified<stored_type> val)
{
// XXX TODO
return QVariant::fromValue<stored_type>(val);
}
static inline
bool is_equal(cv_qualified<value_type> x, cv_qualified<value_type> y)
{
return x == y;
}
};
template<typename t, typename Enable = void>
struct value_traits : default_value_traits<t> {};
template<>
inline
bool default_value_traits<double>::is_equal(double x, double y)
{
return std::fabs(x - y) < 1e-6;
}
template<> struct value_traits<float, double> : default_value_traits<float> {};
template<>
inline
bool default_value_traits<float, double>::is_equal(float x, float y)
{
return std::fabs(x - y) < 1e-6f;
}
template<>
inline
slider_value default_value_traits<slider_value>::value_with_default(cv_qualified<slider_value> val, cv_qualified<slider_value> def)
{
return { val.cur(), def.min(), def.max() };
}
template<>
inline
bool default_value_traits<slider_value>::is_equal(cv_qualified<slider_value> x, cv_qualified<slider_value> y)
{
return value_traits<double>::is_equal(x.cur(), y.cur());
}
// Qt uses int a lot in slots so use it for all enums
template<typename t>
struct value_traits<t, std::enable_if_t<std::is_enum_v<t>>> : default_value_traits<t, int> {};
} // ns options::detail
|
