diff options
Diffstat (limited to 'src/corelib/kernel/qcoreevent.h')
| -rw-r--r-- | src/corelib/kernel/qcoreevent.h | 159 |
1 files changed, 84 insertions, 75 deletions
diff --git a/src/corelib/kernel/qcoreevent.h b/src/corelib/kernel/qcoreevent.h index a8b288bb31..a65dbee7da 100644 --- a/src/corelib/kernel/qcoreevent.h +++ b/src/corelib/kernel/qcoreevent.h @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2020 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QCOREEVENT_H #define QCOREEVENT_H @@ -46,12 +10,43 @@ QT_BEGIN_NAMESPACE +#define Q_EVENT_DISABLE_COPY(Class) \ +protected: \ + Class(const Class &) = default; \ + Class(Class &&) = delete; \ + Class &operator=(const Class &other) = default; \ + Class &operator=(Class &&) = delete + +#define Q_DECL_EVENT_COMMON(Class) \ + protected: \ + Class(const Class &); \ + Class(Class &&) = delete; \ + Class &operator=(const Class &other) = default; \ + Class &operator=(Class &&) = delete; \ + public: \ + Class* clone() const override; \ + ~Class() override; \ + private: + +#define Q_IMPL_EVENT_COMMON(Class) \ + Class::Class(const Class &) = default; \ + Class::~Class() = default; \ + Class* Class::clone() const \ + { \ + auto c = new Class(*this); \ + [[maybe_unused]] QEvent *e = c; \ + /* check that covariant return is safe to add */ \ + Q_ASSERT(reinterpret_cast<quintptr>(c) == reinterpret_cast<quintptr>(e)); \ + return c; \ + } class QEventPrivate; class Q_CORE_EXPORT QEvent // event base class { Q_GADGET QDOC_PROPERTY(bool accepted READ isAccepted WRITE setAccepted) + + Q_EVENT_DISABLE_COPY(QEvent); public: enum Type { /* @@ -82,7 +77,7 @@ public: Hide = 18, // widget is hidden Close = 19, // request to close widget Quit = 20, // request to quit application - ParentChange = 21, // widget has been reparented + ParentChange = 21, // object has been reparented ParentAboutToChange = 131, // sent just before the parent change is done ThreadChange = 22, // object has changed threads WindowActivate = 24, // window was activated @@ -205,6 +200,7 @@ public: GraphicsSceneDragLeave = 166, GraphicsSceneDrop = 167, GraphicsSceneWheel = 168, + GraphicsSceneLeave = 220, KeyboardLayoutChange = 169, // keyboard layout changed @@ -238,7 +234,6 @@ public: UngrabMouse = 187, GrabKeyboard = 188, UngrabKeyboard = 189, - MacGLClearDrawable = 191, // Internal Cocoa, the window has changed, so we must clear StateMachineSignal = 192, StateMachineWrapped = 193, @@ -277,7 +272,7 @@ public: StyleAnimationUpdate = 213, // style animation target should be updated ApplicationStateChange = 214, - WindowChangeInternal = 215, // internal for QQuickWidget + WindowChangeInternal = 215, // internal for QQuickWidget and texture-based widgets ScreenChangeInternal = 216, PlatformSurface = 217, // Platform surface created or about to be destroyed @@ -286,6 +281,16 @@ public: TabletTrackingChange = 219, // tablet tracking state has changed + // GraphicsSceneLeave = 220, + WindowAboutToChangeInternal = 221, // internal for QQuickWidget and texture-based widgets + + DevicePixelRatioChange = 222, + + ChildWindowAdded = 223, + ChildWindowRemoved = 224, + ParentWindowAboutToChange = 225, + ParentWindowChange = 226, + // 512 reserved for Qt Jambi's MetaCall event // 513 reserved for Qt Jambi's DeleteOnMainThread event @@ -295,13 +300,11 @@ public: Q_ENUM(Type) explicit QEvent(Type type); - QEvent(const QEvent &other); virtual ~QEvent(); - QEvent &operator=(const QEvent &other); inline Type type() const { return static_cast<Type>(t); } - inline bool spontaneous() const { return spont; } + inline bool spontaneous() const { return m_spont; } - inline void setAccepted(bool accepted) { m_accept = accepted; } + inline virtual void setAccepted(bool accepted) { m_accept = accepted; } inline bool isAccepted() const { return m_accept; } inline void accept() { m_accept = true; } @@ -309,48 +312,63 @@ public: inline bool isInputEvent() const noexcept { return m_inputEvent; } inline bool isPointerEvent() const noexcept { return m_pointerEvent; } + inline bool isSinglePointEvent() const noexcept { return m_singlePointEvent; } static int registerEventType(int hint = -1) noexcept; + virtual QEvent *clone() const; + protected: struct InputEventTag { explicit InputEventTag() = default; }; QEvent(Type type, InputEventTag) : QEvent(type) { m_inputEvent = true; } struct PointerEventTag { explicit PointerEventTag() = default; }; QEvent(Type type, PointerEventTag) : QEvent(type, InputEventTag{}) { m_pointerEvent = true; } - QEventPrivate *d; - ushort t; + struct SinglePointEventTag { explicit SinglePointEventTag() = default; }; + QEvent(Type type, SinglePointEventTag) : QEvent(type, PointerEventTag{}) { m_singlePointEvent = true; } + quint16 t; private: - ushort posted : 1; - ushort spont : 1; - ushort m_accept : 1; - ushort m_inputEvent : 1; - ushort m_pointerEvent : 1; - ushort reserved : 11; + /* + We can assume that C++ types are 8-byte aligned, and we can't assume that compilers + coalesce data members from subclasses. Use bitfields to fill up to next 8-byte + aligned size, which is 16 bytes. That way we don't waste memory, and have plenty of room + for future flags. + Don't use bitfields for the most important flags, as that would generate more code, and + access is always inline. Bytes used are: + 8 vptr + 2 type + 3 bool flags => 3 bytes left, so 24 bits. However, compilers will word- + align the quint16s after the bools, so add another unused bool to fill that gap, which + leaves us with 16 bits. + */ + bool m_posted = false; + bool m_spont = false; + bool m_accept = true; + bool m_unused = false; + quint16 m_reserved : 13; + quint16 m_inputEvent : 1; + quint16 m_pointerEvent : 1; + quint16 m_singlePointEvent : 1; friend class QCoreApplication; friend class QCoreApplicationPrivate; friend class QThreadData; friend class QApplication; -#if QT_CONFIG(shortcut) - friend class QShortcutMap; -#endif - friend class QGraphicsView; - friend class QGraphicsScene; friend class QGraphicsScenePrivate; // from QtTest: + // QtWebEngine event handling requires forwarding events as spontaneous. + // Impersonated QSpontaneKeyEvent in QtWebEngine to handle such cases. friend class QSpontaneKeyEvent; // needs this: Q_ALWAYS_INLINE - void setSpontaneous() { spont = true; } + void setSpontaneous() { m_spont = true; } }; class Q_CORE_EXPORT QTimerEvent : public QEvent { + Q_DECL_EVENT_COMMON(QTimerEvent) public: - explicit QTimerEvent( int timerId ); - ~QTimerEvent(); + explicit QTimerEvent(int timerId); int timerId() const { return id; } + protected: int id; }; @@ -359,22 +377,24 @@ class QObject; class Q_CORE_EXPORT QChildEvent : public QEvent { + Q_DECL_EVENT_COMMON(QChildEvent) public: - QChildEvent( Type type, QObject *child ); - ~QChildEvent(); + QChildEvent(Type type, QObject *child); + QObject *child() const { return c; } bool added() const { return type() == ChildAdded; } bool polished() const { return type() == ChildPolished; } bool removed() const { return type() == ChildRemoved; } + protected: QObject *c; }; class Q_CORE_EXPORT QDynamicPropertyChangeEvent : public QEvent { + Q_DECL_EVENT_COMMON(QDynamicPropertyChangeEvent) public: explicit QDynamicPropertyChangeEvent(const QByteArray &name); - ~QDynamicPropertyChangeEvent(); inline QByteArray propertyName() const { return n; } @@ -382,17 +402,6 @@ private: QByteArray n; }; -class Q_CORE_EXPORT QDeferredDeleteEvent : public QEvent -{ -public: - explicit QDeferredDeleteEvent(); - ~QDeferredDeleteEvent(); - int loopLevel() const { return level; } -private: - int level; - friend class QCoreApplication; -}; - QT_END_NAMESPACE #endif // QCOREEVENT_H |