forked from github_mirror/framelesshelper
102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
/*
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* MIT License
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*
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* Copyright (C) 2021-2023 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#pragma once
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#include <FramelessHelper/Core/framelesshelpercore_global.h>
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 12, 0))
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# include <QtCore/qscopeguard.h>
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#else // (QT_VERSION < QT_VERSION_CHECK(5, 12, 0))
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FRAMELESSHELPER_BEGIN_NAMESPACE
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using ScopeGuardCallback = std::function<void()>;
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class [[nodiscard]] ScopeGuard
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{
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Q_DISABLE_COPY(ScopeGuard)
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public:
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ScopeGuard()
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{
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}
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explicit ScopeGuard(const ScopeGuardCallback &cb)
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{
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// For the ctor, we require a non-null function.
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Q_ASSERT(cb);
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if (!cb) {
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return;
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}
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m_callback = cb;
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}
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explicit ScopeGuard(ScopeGuardCallback &&cb)
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{
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// For the ctor, we require a non-null function.
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Q_ASSERT(cb);
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if (!cb) {
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return;
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}
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m_callback = std::move(cb);
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}
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ScopeGuard(ScopeGuard &&other) : m_callback(std::move(other.m_callback))
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{
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}
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~ScopeGuard()
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{
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if (m_callback) {
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m_callback();
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}
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}
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[[nodiscard]] ScopeGuardCallback callback() const
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{
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return m_callback;
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}
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void setCallback(const ScopeGuardCallback &cb)
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{
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// But we allow null functions here.
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m_callback = cb;
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}
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private:
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ScopeGuardCallback m_callback = nullptr;
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};
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[[nodiscard]] inline ScopeGuard make_guard(ScopeGuardCallback &&cb)
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{
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return ScopeGuard(cb);
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}
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#define qScopeGuard make_guard
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FRAMELESSHELPER_END_NAMESPACE
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#endif // (QT_VERSION >= QT_VERSION_CHECK(5, 12, 0))
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