Clementine-audio-player-Mac.../ext/libclementine-common/core/closure.cpp

104 lines
2.9 KiB
C++

/* This file is part of Clementine.
Copyright 2011, David Sansome <me@davidsansome.com>
Clementine 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.
Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "closure.h"
#include <QTimer>
#include "core/logging.h"
#include "core/timeconstants.h"
namespace _detail {
Closure::Closure(QObject* sender,
const char* signal,
QObject* receiver,
const char* slot,
const ClosureArgumentWrapper* val0,
const ClosureArgumentWrapper* val1,
const ClosureArgumentWrapper* val2,
const ClosureArgumentWrapper* val3)
: QObject(receiver),
callback_(NULL),
val0_(val0),
val1_(val1),
val2_(val2),
val3_(val3) {
const QMetaObject* meta_receiver = receiver->metaObject();
QByteArray normalised_slot = QMetaObject::normalizedSignature(slot + 1);
const int index = meta_receiver->indexOfSlot(normalised_slot.constData());
Q_ASSERT(index != -1);
slot_ = meta_receiver->method(index);
Connect(sender, signal);
}
Closure::Closure(QObject* sender,
const char* signal,
std::tr1::function<void()> callback)
: callback_(callback) {
Connect(sender, signal);
}
Closure::~Closure() {
}
void Closure::Connect(QObject* sender, const char* signal) {
bool success = connect(sender, signal, SLOT(Invoked()));
Q_ASSERT(success);
success = connect(sender, SIGNAL(destroyed()), SLOT(Cleanup()));
Q_ASSERT(success);
Q_UNUSED(success);
}
void Closure::Invoked() {
if (callback_) {
callback_();
} else {
slot_.invoke(
parent(),
val0_ ? val0_->arg() : QGenericArgument(),
val1_ ? val1_->arg() : QGenericArgument(),
val2_ ? val2_->arg() : QGenericArgument(),
val3_ ? val3_->arg() : QGenericArgument());
}
deleteLater();
}
void Closure::Cleanup() {
disconnect();
deleteLater();
}
} // namespace _detail
_detail::Closure* NewClosure(
QObject* sender, const char* signal,
QObject* receiver, const char* slot) {
return new _detail::Closure(sender, signal, receiver, slot);
}
void DoAfter(QObject* receiver, const char* slot, int msec) {
QTimer::singleShot(msec, receiver, slot);
}
void DoInAMinuteOrSo(QObject* receiver, const char* slot) {
int msec = (60 + (qrand() % 60)) * kMsecPerSec;
DoAfter(receiver, slot, msec);
}