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qtutils.h 5.86 KiB
/*
* Copyright (C) 2015-2020 by Savoir-faire Linux
* Author: Edric Ladent Milaret <edric.ladent-milaret@savoirfairelinux.com>
* Author: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>
* Author: Isa Nanic <isa.nanic@savoirfairelinux.com>
* Author: Mingrui Zhang <mingrui.zhang@savoirfairelinux.com>
* Author: Aline Gondim Santos <aline.gondimsantos@savoirfairelinux.com>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <QObject>
#define PROPERTY_BASE(type, prop) \
type prop##_ {}; \
\
public: \
Q_SIGNAL void prop##Changed(); \
type get_##prop() \
{ \
return prop##_; \
} \
void set_##prop(const type& x = {}) \
{ \
if (prop##_ != x) { \
prop##_ = x; \
Q_EMIT prop##Changed(); \
} \
}
#define QML_RO_PROPERTY(type, prop) \
private: \
Q_PROPERTY(type prop READ get_##prop NOTIFY prop##Changed); \
PROPERTY_BASE(type, prop)
#define QML_PROPERTY(type, prop) \
private: \
Q_PROPERTY(type prop MEMBER prop##_ NOTIFY prop##Changed); \
PROPERTY_BASE(type, prop)
namespace Utils {
template<typename Func1, typename Func2>
void
oneShotConnect(const typename QtPrivate::FunctionPointer<Func1>::Object* sender,
Func1 signal,
Func2 slot)
{
QMetaObject::Connection* const connection = new QMetaObject::Connection;
*connection = QObject::connect(sender, signal, slot);
QMetaObject::Connection* const disconnectConnection = new QMetaObject::Connection;
*disconnectConnection = QObject::connect(sender, signal, [connection, disconnectConnection] {
if (connection) {
QObject::disconnect(*connection);
delete connection;
}
if (disconnectConnection) {
QObject::disconnect(*disconnectConnection);
delete disconnectConnection;
}
});
}
template<typename Func1, typename Func2, typename Func3>
void
oneShotConnect(const typename QtPrivate::FunctionPointer<Func1>::Object* sender,
Func1 signal,
Func2 slot,
const typename QtPrivate::FunctionPointer<Func3>::Object* interrupter,
Func3 interrupterSignal)
{
QMetaObject::Connection* const connection = new QMetaObject::Connection;
QMetaObject::Connection* const disconnectConnection = new QMetaObject::Connection;
QMetaObject::Connection* const interruptConnection = new QMetaObject::Connection;
auto disconnectFunc = [connection, disconnectConnection, interruptConnection] {
if (connection) {
QObject::disconnect(*connection);
delete connection;
}
if (disconnectConnection) {
QObject::disconnect(*disconnectConnection);
delete disconnectConnection;
}
if (interruptConnection) {
QObject::disconnect(*interruptConnection);
delete interruptConnection;
}
};
*connection = QObject::connect(sender, signal, slot);
*disconnectConnection = QObject::connect(sender, signal, disconnectFunc);
*interruptConnection = QObject::connect(interrupter, interrupterSignal, disconnectFunc);
}
template<typename Func1, typename Func2>
void
oneShotConnect(const typename QtPrivate::FunctionPointer<Func1>::Object* sender,
Func1 signal,
const typename QtPrivate::FunctionPointer<Func2>::Object* receiver,
Func2 slot)
{
QMetaObject::Connection* const connection = new QMetaObject::Connection;
*connection = QObject::connect(sender, signal, receiver, slot);
QMetaObject::Connection* const disconnectConnection = new QMetaObject::Connection;
*disconnectConnection = QObject::connect(sender, signal, [connection, disconnectConnection] {
if (connection) {
QObject::disconnect(*connection);
delete connection;
}
if (disconnectConnection) {
QObject::disconnect(*disconnectConnection);
delete disconnectConnection;
}
});
}
class OneShotConnection final : public QObject
{
Q_OBJECT
public:
explicit OneShotConnection(const QObject* sender,
const char* signal,
QMetaObject::Connection* connection,
QObject* parent = nullptr)
: QObject(parent)
{
connection_ = connection;
disconnectConnection_ = new QMetaObject::Connection;
*disconnectConnection_ = QObject::connect(sender, signal, this, SLOT(onTriggered()));
}
~OneShotConnection() = default;
public Q_SLOTS:
void onTriggered()
{
if (connection_) {
QObject::disconnect(*connection_);
delete connection_;
}
if (disconnectConnection_) {
QObject::disconnect(*disconnectConnection_);
delete disconnectConnection_;
}
deleteLater();
}
private:
QMetaObject::Connection* connection_;
QMetaObject::Connection* disconnectConnection_;
};
inline void
oneShotConnect(const QObject* sender, const char* signal, const QObject* receiver, const char* slot)
{
QMetaObject::Connection* const connection = new QMetaObject::Connection;
*connection = QObject::connect(sender, signal, receiver, slot);
new OneShotConnection(sender, signal, connection);
}
} // namespace Utils