/usr/include/Unity-6.0/UnityCore/MiscUtils.h is in libunity-core-6.0-dev 7.2.0+14.04.20140416-0ubuntu1.
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/*
* 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
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