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90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/* LICENSE BEGIN
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This file is part of the SixtyFPS Project -- https://sixtyfps.io
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Copyright (c) 2020 Olivier Goffart <olivier.goffart@sixtyfps.io>
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Copyright (c) 2020 Simon Hausmann <simon.hausmann@sixtyfps.io>
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SPDX-License-Identifier: GPL-3.0-only
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This file is also available under commercial licensing terms.
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Please contact info@sixtyfps.io for more information.
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LICENSE END */
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#pragma once
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#include <tuple>
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#include "sixtyfps_properties_internal.h"
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namespace sixtyfps {
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template<typename = void()> struct Callback;
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template<typename Ret, typename... Arg>
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struct Callback<Ret(Arg...)>
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{
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Callback() { cbindgen_private::sixtyfps_callback_init(&inner); }
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~Callback() { cbindgen_private::sixtyfps_callback_drop(&inner); }
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Callback(const Callback &) = delete;
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Callback(Callback &&) = delete;
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Callback &operator=(const Callback &) = delete;
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template<typename F>
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void set_handler(F binding) const
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{
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cbindgen_private::sixtyfps_callback_set_handler(
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&inner,
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[](void *user_data, const void *arg) {
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auto *p = reinterpret_cast<const Pair*>(arg);
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*p->first = std::apply(*reinterpret_cast<F *>(user_data), p->second);
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},
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new F(std::move(binding)),
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[](void *user_data) { delete reinterpret_cast<F *>(user_data); });
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}
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Ret call(const Arg &...arg) const
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{
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Ret r{};
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Pair p = std::pair{ &r, Tuple{arg...} };
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cbindgen_private::sixtyfps_callback_call(&inner, &p);
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return r;
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}
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private:
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using Tuple = std::tuple<Arg...>;
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using Pair = std::pair<Ret *, Tuple>;
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cbindgen_private::CallbackOpaque inner;
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};
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template<typename... Arg>
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struct Callback<void(Arg...)>
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{
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Callback() { cbindgen_private::sixtyfps_callback_init(&inner); }
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~Callback() { cbindgen_private::sixtyfps_callback_drop(&inner); }
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Callback(const Callback &) = delete;
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Callback(Callback &&) = delete;
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Callback &operator=(const Callback &) = delete;
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template<typename F>
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void set_handler(F binding) const
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{
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cbindgen_private::sixtyfps_callback_set_handler(
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&inner,
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[](void *user_data, const void *arg) {
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std::apply(*reinterpret_cast<F *>(user_data),
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*reinterpret_cast<const Tuple*>(arg));
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},
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new F(std::move(binding)),
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[](void *user_data) { delete reinterpret_cast<F *>(user_data); });
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}
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void call(const Arg &...arg) const
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{
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Tuple tuple{arg...};
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cbindgen_private::sixtyfps_callback_call(&inner, &tuple);
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}
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private:
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using Tuple = std::tuple<Arg...>;
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cbindgen_private::CallbackOpaque inner;
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};
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}
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