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strawberry-audio-player-win.../ext/libstrawberry-common/core/closure.cpp
2020-06-14 18:58:24 +02:00

86 lines
2.3 KiB
C++

/* This file is part of Strawberry.
Copyright 2011, David Sansome <me@davidsansome.com>
Strawberry is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QObject>
#include <QList>
#include <QTimer>
#include <QGenericArgument>
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
# include <QRandomGenerator>
#endif
#include "closure.h"
#include "core/timeconstants.h"
namespace _detail {
ClosureBase::ClosureBase(ObjectHelper *helper) : helper_(helper) {}
ClosureBase::~ClosureBase() {}
CallbackClosure::CallbackClosure(QObject *sender, const char *signal, std::function<void()> callback)
: ClosureBase(new ObjectHelper(sender, signal, this)),
callback_(callback) {
}
void CallbackClosure::Invoke() {
callback_();
}
ObjectHelper* ClosureBase::helper() const {
return helper_;
}
ObjectHelper::ObjectHelper(QObject *sender, const char *signal, ClosureBase *closure) : closure_(closure) {
connect(sender, signal, SLOT(Invoked()));
connect(sender, SIGNAL(destroyed()), SLOT(deleteLater()));
}
ObjectHelper::~ObjectHelper() {}
void ObjectHelper::Invoked() {
closure_->Invoke();
deleteLater();
}
void Unpack(QList<QGenericArgument>*) {}
} // namespace _detail
_detail::ClosureBase* NewClosure(QObject *sender, const char *signal, std::function<void()> callback) {
return new _detail::CallbackClosure(sender, signal, callback);
}
void DoAfter(QObject *receiver, const char *slot, int msec) {
QTimer::singleShot(msec, receiver, slot);
}
void DoInAMinuteOrSo(QObject *receiver, const char *slot) {
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
int msec = (60 + QRandomGenerator::global()->bounded(1, 60)) * kMsecPerSec;
#else
int msec = (60 + (qrand() % 60)) * kMsecPerSec;
#endif
DoAfter(receiver, slot, msec);
}