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/* Copyright (c) 2015-2016, Stanislaw Halik <sthalik@misaki.pl>
* Permission to use, copy, modify, and/or distribute this
* software for any purpose with or without fee is hereby granted,
* provided that the above copyright notice and this permission
* notice appear in all copies.
*/
#pragma once
#include "export.hpp"
#include "bundle.hpp"
#include "slider.hpp"
#include "base-value.hpp"
#include "value-traits.hpp"
#include "compat/macros.hpp"
#include <type_traits>
#include <typeinfo>
#include <QMetaType>
namespace options::detail {
template<typename t>
struct dereference_wrapper final
{
cc_forceinline constexpr t const* operator->() const { return &x; }
cc_forceinline constexpr t* operator->() { return &x; }
t x;
constexpr explicit cc_forceinline dereference_wrapper(t&& x) : x(x) {}
};
} // ns options::detail
namespace options {
template<typename t>
class value final : public value_
{
const t def;
using traits = detail::value_traits<t>;
using stored_type = typename traits::stored_type;
static bool is_equal(const QVariant& val1, const QVariant& val2)
{
return val1.value<stored_type>() == val2.value<stored_type>();
}
cc_noinline
t get() const
{
if (self_name.isEmpty())
return def;
QVariant variant = b->get<QVariant>(self_name);
if (!b->contains(self_name) || variant.type() == QVariant::Invalid)
return def;
const stored_type x { variant.value<stored_type>() };
return traits::from_value(traits::from_storage(x), def);
}
friend class detail::connector;
void bundle_value_changed() const override
{
if (!self_name.isEmpty())
emit valueChanged(traits::to_storage(get()));
}
void store_variant(const QVariant& value) override
{
if (self_name.isEmpty())
return;
if (value.type() == qMetaTypeId<stored_type>())
b->store_kv(self_name, value);
else
operator=(traits::value_from_variant(value));
}
public:
cc_noinline
value<t>& operator=(const t& datum)
{
if (self_name.isEmpty())
return *this;
if (datum != get())
b->store_kv(self_name, QVariant::fromValue<stored_type>(traits::to_storage(datum)));
return *this;
}
static constexpr inline Qt::ConnectionType DIRECT_CONNTYPE = Qt::DirectConnection;
static constexpr inline Qt::ConnectionType SAFE_CONNTYPE = Qt::QueuedConnection;
cc_noinline
value(bundle b, const QString& name, t def) :
value_(b, name, &is_equal, std::type_index(typeid(stored_type))),
def(def)
{
if (!self_name.isEmpty())
QObject::connect(b.get(), &detail::bundle::reloading,
this, &value_::reload,
DIRECT_CONNTYPE);
}
cc_noinline
t default_value() const
{
return def;
}
cc_noinline
void set_to_default() override
{
*this = def;
}
operator t() const { return get(); } // NOLINT
template<typename u, typename = decltype(static_cast<u>(std::declval<t>()))>
explicit cc_forceinline operator u() const { return to<u>(); }
auto operator->() const
{
return detail::dereference_wrapper<t>{get()};
}
cc_noinline
void reload() override
{
#if 0
if (!self_name.isEmpty())
store(traits::to_storage(get()));
#endif
}
cc_forceinline t operator()() const { return get(); }
cc_forceinline t operator*() const { return get(); }
template<typename u>
u to() const
{
return static_cast<u>(get());
}
};
// some linker problems
#if !defined OTR_INST_VALUE
# define OTR_INST_VALUE OTR_TEMPLATE_IMPORT
#endif
OTR_INST_VALUE(value<double>);
OTR_INST_VALUE(value<float>);
OTR_INST_VALUE(value<int>);
OTR_INST_VALUE(value<bool>);
OTR_INST_VALUE(value<QString>);
OTR_INST_VALUE(value<slider_value>);
OTR_INST_VALUE(value<QPointF>);
OTR_INST_VALUE(value<QVariant>);
OTR_INST_VALUE(value<QList<double>>);
OTR_INST_VALUE(value<QList<float>>);
OTR_INST_VALUE(value<QList<int>>);
OTR_INST_VALUE(value<QList<bool>>);
OTR_INST_VALUE(value<QList<QString>>);
OTR_INST_VALUE(value<QList<slider_value>>);
OTR_INST_VALUE(value<QList<QPointF>>);
OTR_INST_VALUE(value<QList<QVariant>>);
} // ns options
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