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
|
// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2011 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Nick Dedekind <nick.dedekind@canonical.com>
*/
#ifndef UNITY_MISC_UTILS_H
#define UNITY_MISC_UTILS_H
#include <NuxCore/Property.h>
namespace unity
{
namespace utils
{
template <typename TYPE>
sigc::connection ConnectProperties(nux::ROProperty<TYPE>& local_property, nux::Property<TYPE>& remote_property)
{
local_property.SetGetterFunction([&remote_property]() { return remote_property.Get(); });
auto change_connection = remote_property.changed.connect([&local_property, &remote_property](TYPE const& value) { local_property.EmitChanged(value); });
return change_connection;
}
template <typename TYPE>
sigc::connection ConnectProperties(nux::ROProperty<TYPE>& local_property, nux::ROProperty<TYPE>& remote_property)
{
local_property.SetGetterFunction([&remote_property]() { return remote_property.Get(); });
auto change_connection = remote_property.changed.connect([&local_property, &remote_property](TYPE const& value) { local_property.EmitChanged(value); });
return change_connection;
}
template <typename TYPE>
sigc::connection ConnectProperties(nux::RWProperty<TYPE>& local_property, nux::Property<TYPE>& remote_property)
{
auto change_connection = std::make_shared<sigc::connection>();
*change_connection = remote_property.changed.connect([&local_property, &remote_property](TYPE const& value)
{
local_property.EmitChanged(value);
});
local_property.SetGetterFunction([&remote_property]() { return remote_property.Get(); });
local_property.SetSetterFunction([&remote_property, &local_property, change_connection](TYPE const& value)
{
TYPE old_value = remote_property.Get();
// block so we doing get a loop.
bool blocked = change_connection->block(true);
bool ret = remote_property.Set(value) != old_value;
change_connection->block(blocked);
return ret;
});
return *change_connection;
}
template <typename TYPE>
sigc::connection ConnectProperties(nux::RWProperty<TYPE>& local_property, nux::RWProperty<TYPE>& remote_property)
{
auto change_connection = std::make_shared<sigc::connection>();
*change_connection = remote_property.changed.connect([&local_property, &remote_property](TYPE const& value)
{
local_property.EmitChanged(value);
});
local_property.SetGetterFunction([&remote_property]() { return remote_property.Get(); });
local_property.SetSetterFunction([&remote_property, &local_property, change_connection](TYPE const& value)
{
TYPE old_value = remote_property.Get();
// block so we doing get a loop.
bool blocked = change_connection->block(true);
bool ret = remote_property.Set(value) != old_value;
change_connection->block(blocked);
return ret;
});
return *change_connection;
}
template <class TYPE>
class AutoResettingVariable
{
public:
AutoResettingVariable(TYPE*const variable, TYPE const& new_value)
: variable_(variable)
, original_value_(*variable)
{
*variable_ = new_value;
}
~AutoResettingVariable()
{
*variable_ = original_value_;
}
private:
TYPE*const variable_;
TYPE original_value_;
};
}
}
#endif // UNITY_MISC_UTILS_H
|