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Diffstat (limited to 'src/corelib/kernel/qpropertybinding_p.h')
| -rw-r--r-- | src/corelib/kernel/qpropertybinding_p.h | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/src/corelib/kernel/qpropertybinding_p.h b/src/corelib/kernel/qpropertybinding_p.h deleted file mode 100644 index 151f5543d5..0000000000 --- a/src/corelib/kernel/qpropertybinding_p.h +++ /dev/null @@ -1,186 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QPROPERTYBINDING_P_H -#define QPROPERTYBINDING_P_H - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists for the convenience -// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header -// file may change from version to version without notice, or even be removed. -// -// We mean it. -// - -#include <QtCore/qglobal.h> -#include <QtCore/qshareddata.h> -#include <QtCore/qscopedpointer.h> -#include <vector> -#include <functional> - -#include "qproperty_p.h" - -QT_BEGIN_NAMESPACE - -class Q_CORE_EXPORT QPropertyBindingPrivate : public QSharedData -{ -private: - friend struct QPropertyBasePointer; - - using ObserverArray = std::array<QPropertyObserver, 4>; - - // QSharedData is 4 bytes. Use the padding for the bools as we need 8 byte alignment below. - bool dirty = false; - bool updating = false; - bool hasStaticObserver = false; - - QUntypedPropertyBinding::BindingEvaluationFunction evaluationFunction; - - QPropertyObserverPointer firstObserver; - union { - ObserverArray inlineDependencyObservers; - struct { - void *staticObserver; - void (*staticObserverCallback)(void*, void*); - bool (*staticGuardCallback)(void*, void*); - }; - }; - QScopedPointer<std::vector<QPropertyObserver>> heapObservers; - - void *propertyDataPtr = nullptr; - - QPropertyBindingSourceLocation location; - QPropertyBindingError error; - - QMetaType metaType; - -public: - // public because the auto-tests access it, too. - size_t dependencyObserverCount = 0; - - QPropertyBindingPrivate(const QMetaType &metaType, QUntypedPropertyBinding::BindingEvaluationFunction evaluationFunction, - const QPropertyBindingSourceLocation &location) - : evaluationFunction(std::move(evaluationFunction)) - , inlineDependencyObservers() // Explicit initialization required because of union - , location(location) - , metaType(metaType) - {} - virtual ~QPropertyBindingPrivate(); - - void setDirty(bool d) { dirty = d; } - void setProperty(void *propertyPtr) { propertyDataPtr = propertyPtr; } - void setStaticObserver(void *observer, void (*callback)(void*, void*), bool (*guardCallback)(void *, void*)) - { - if (observer) { - if (!hasStaticObserver) { - if (dependencyObserverCount > 0) { - if (!heapObservers) - heapObservers.reset(new std::vector<QPropertyObserver>()); - for (int i = 0, end = qMin(dependencyObserverCount, inlineDependencyObservers.size()); i < end; ++i) - heapObservers->push_back(std::move(inlineDependencyObservers[i])); - } - inlineDependencyObservers.~ObserverArray(); - } - - hasStaticObserver = true; - staticObserver = observer; - staticObserverCallback = callback; - staticGuardCallback = guardCallback; - } else if (hasStaticObserver) { - hasStaticObserver = false; - new (&inlineDependencyObservers) ObserverArray(); - for (int i = 0, end = qMin(dependencyObserverCount, inlineDependencyObservers.size()); i < end; ++i) { - inlineDependencyObservers[i] = std::move(heapObservers->back()); - heapObservers->pop_back(); - } - } - } - void prependObserver(QPropertyObserverPointer observer) { - observer.ptr->prev = const_cast<QPropertyObserver **>(&firstObserver.ptr); - firstObserver = observer; - } - - QPropertyObserverPointer takeObservers() - { - auto observers = firstObserver; - firstObserver.ptr = nullptr; - return observers; - } - - void clearDependencyObservers() { - if (!hasStaticObserver) { - for (size_t i = 0; i < inlineDependencyObservers.size(); ++i) { - QPropertyObserver empty; - qSwap(inlineDependencyObservers[i], empty); - } - } - if (heapObservers) - heapObservers->clear(); - dependencyObserverCount = 0; - } - QPropertyObserverPointer allocateDependencyObserver() { - if (!hasStaticObserver && dependencyObserverCount < inlineDependencyObservers.size()) { - ++dependencyObserverCount; - return {&inlineDependencyObservers[dependencyObserverCount - 1]}; - } - ++dependencyObserverCount; - if (!heapObservers) - heapObservers.reset(new std::vector<QPropertyObserver>()); - return {&heapObservers->emplace_back()}; - } - - QPropertyBindingSourceLocation sourceLocation() const { return location; } - QPropertyBindingError bindingError() const { return error; } - QMetaType valueMetaType() const { return metaType; } - - void unlinkAndDeref(); - - void markDirtyAndNotifyObservers(); - bool evaluateIfDirtyAndReturnTrueIfValueChanged(); - - static QPropertyBindingPrivate *get(const QUntypedPropertyBinding &binding) - { return binding.d.data(); } -}; - -QT_END_NAMESPACE - -#endif // QPROPERTYBINDING_P_H |