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Qt 6.x
The Qt SDK
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Qt 6.x
The Qt SDK
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QSimpleDrag implements QBasicDrag for Drag and Drop operations within the Qt Application itself. More...
#include <qsimpledrag_p.h>
Inheritance diagram for QSimpleDrag: Collaboration diagram for QSimpleDrag:Public Member Functions | |
| QSimpleDrag () | |
| Public Member Functions inherited from QBasicDrag | |
| ~QBasicDrag () | |
| virtual Qt::DropAction | drag (QDrag *drag) override |
| void | cancelDrag () override |
| Cancels the currently active drag (only for drags of the current application initiated by QPlatformDrag::drag()). | |
| virtual bool | eventFilter (QObject *o, QEvent *e) override |
| Filters events if this object has been installed as an event filter for the watched object. | |
| Public Member Functions inherited from QPlatformDrag | |
| QPlatformDrag () | |
| virtual | ~QPlatformDrag () |
| QDrag * | currentDrag () const |
| virtual Qt::DropAction | drag (QDrag *m_drag)=0 |
| virtual void | cancelDrag () |
| Cancels the currently active drag (only for drags of the current application initiated by QPlatformDrag::drag()). | |
| void | updateAction (Qt::DropAction action) |
| Called to notify QDrag about changes of the current action. | |
| virtual Qt::DropAction | defaultAction (Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers) const |
| virtual bool | ownsDragObject () const |
| Returns bool indicating whether QPlatformDrag takes ownership and therefore responsibility of deleting the QDrag object passed in from QPlatformDrag::drag. This can be useful on platforms where QDrag object has to be kept around. | |
| Public Member Functions inherited from QObject | |
| Q_INVOKABLE | QObject (QObject *parent=nullptr) |
| Constructs an object with parent object parent. | |
| virtual | ~QObject () |
| Destroys the object, deleting all its child objects. | |
| virtual bool | event (QEvent *event) |
| This virtual function receives events to an object and should return true if the event e was recognized and processed. | |
| virtual bool | eventFilter (QObject *watched, QEvent *event) |
| Filters events if this object has been installed as an event filter for the watched object. | |
| QString | objectName () const |
| Q_WEAK_OVERLOAD void | setObjectName (const QString &name) |
| Sets the object's name to name. | |
| void | setObjectName (QAnyStringView name) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QBindable< QString > | bindableObjectName () |
| bool | isWidgetType () const |
Returns true if the object is a widget; otherwise returns false. | |
| bool | isWindowType () const |
Returns true if the object is a window; otherwise returns false. | |
| bool | isQuickItemType () const |
Returns true if the object is a QQuickItem; otherwise returns false. | |
| bool | signalsBlocked () const noexcept |
Returns true if signals are blocked; otherwise returns false. | |
| bool | blockSignals (bool b) noexcept |
| If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). | |
| QThread * | thread () const |
| Returns the thread in which the object lives. | |
| void | moveToThread (QThread *thread) |
| Changes the thread affinity for this object and its children. | |
| int | startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer) |
| This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds. | |
| int | startTimer (std::chrono::milliseconds time, Qt::TimerType timerType=Qt::CoarseTimer) |
| void | killTimer (int id) |
| Kills the timer with timer identifier, id. | |
| template<typename T > | |
| T | findChild (const QString &aName=QString(), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object. | |
| template<typename T > | |
| QList< T > | findChildren (const QString &aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. | |
| template<typename T > | |
| QList< T > | findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| const QObjectList & | children () const |
| Returns a list of child objects. | |
| void | setParent (QObject *parent) |
| Makes the object a child of parent. | |
| void | installEventFilter (QObject *filterObj) |
| Installs an event filter filterObj on this object. | |
| void | removeEventFilter (QObject *obj) |
| Removes an event filter object obj from this object. | |
| QMetaObject::Connection | connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const |
| bool | disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const |
| bool | disconnect (const QObject *receiver, const char *member=nullptr) const |
| void | dumpObjectTree () const |
| Dumps a tree of children to the debug output. | |
| void | dumpObjectInfo () const |
| Dumps information about signal connections, etc. | |
| bool | setProperty (const char *name, const QVariant &value) |
| Sets the value of the object's name property to value. | |
| bool | setProperty (const char *name, QVariant &&value) |
| QVariant | property (const char *name) const |
| Returns the value of the object's name property. | |
| QList< QByteArray > | dynamicPropertyNames () const |
| QBindingStorage * | bindingStorage () |
| const QBindingStorage * | bindingStorage () const |
| QObject * | parent () const |
| Returns a pointer to the parent object. | |
| bool | inherits (const char *classname) const |
Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. | |
Protected Member Functions | |
| virtual void | startDrag () override |
| virtual void | cancel () override |
| virtual void | move (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override |
| virtual void | drop (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override |
| Protected Member Functions inherited from QBasicDrag | |
| QBasicDrag () | |
| virtual void | startDrag () |
| virtual void | cancel () |
| virtual void | move (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods)=0 |
| virtual void | drop (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods)=0 |
| virtual void | endDrag () |
| void | moveShapedPixmapWindow (const QPoint &deviceIndependentPosition) |
| Move the drag label to globalPos, which is interpreted in device independent coordinates. | |
| QShapedPixmapWindow * | shapedPixmapWindow () const |
| void | recreateShapedPixmapWindow (QScreen *screen, const QPoint &pos) |
| void | updateCursor (Qt::DropAction action) |
| bool | canDrop () const |
| void | setCanDrop (bool c) |
| bool | useCompositing () const |
| void | setUseCompositing (bool on) |
| void | setScreen (QScreen *screen) |
| Qt::DropAction | executedDropAction () const |
| void | setExecutedDropAction (Qt::DropAction da) |
| QDrag * | drag () const |
| Protected Member Functions inherited from QObject | |
| QObject * | sender () const |
| Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr. | |
| int | senderSignalIndex () const |
| int | receivers (const char *signal) const |
| Returns the number of receivers connected to the signal. | |
| bool | isSignalConnected (const QMetaMethod &signal) const |
| virtual void | timerEvent (QTimerEvent *event) |
| This event handler can be reimplemented in a subclass to receive timer events for the object. | |
| virtual void | childEvent (QChildEvent *event) |
| This event handler can be reimplemented in a subclass to receive child events. | |
| virtual void | customEvent (QEvent *event) |
| This event handler can be reimplemented in a subclass to receive custom events. | |
| virtual void | connectNotify (const QMetaMethod &signal) |
| virtual void | disconnectNotify (const QMetaMethod &signal) |
| QObject (QObjectPrivate &dd, QObject *parent=nullptr) | |
Additional Inherited Members | |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| \threadsafe | |
| Signals inherited from QObject | |
| void | destroyed (QObject *=nullptr) |
| This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked. | |
| void | objectNameChanged (const QString &objectName, QPrivateSignal) |
| This signal is emitted after the object's name has been changed. | |
| Static Public Member Functions inherited from QPlatformDrag | |
| static QPixmap | defaultPixmap () |
| Static Public Member Functions inherited from QObject | |
| static QMetaObject::Connection | connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection) |
| \threadsafe | |
| static QMetaObject::Connection | connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static QMetaObject::Connection | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static QMetaObject::Connection | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot) |
| static bool | disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member) |
| \threadsafe | |
| static bool | disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member) |
| static bool | disconnect (const QMetaObject::Connection &) |
| Disconnect a connection. | |
| template<typename Func1 , typename Func2 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot) |
| template<typename Func1 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero) |
| Protected Attributes inherited from QBasicDrag | |
| QWindow * | m_sourceWindow = nullptr |
| QPointer< QWindow > | m_windowUnderCursor = nullptr |
| Protected Attributes inherited from QObject | |
| QScopedPointer< QObjectData > | d_ptr |
| Properties inherited from QObject | |
| QString | objectName |
| the name of this object | |
| Related Symbols inherited from QObject | |
| template< class T > T | qobject_cast (const QObject *object) |
| Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr. | |
| template< typename T > T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| template< typename T > QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QObjectList | |
| \macro Q_CLASSINFO(Name, Value) | |
QSimpleDrag implements QBasicDrag for Drag and Drop operations within the Qt Application itself.
The class checks whether the receiving window is a window of the Qt application and sets the state accordingly. It does not take windows of other applications into account.
Definition at line 96 of file qsimpledrag_p.h.
| QSimpleDrag::QSimpleDrag | ( | ) |
Definition at line 338 of file qsimpledrag.cpp.
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overrideprotectedvirtual |
Reimplemented from QBasicDrag.
Definition at line 370 of file qsimpledrag.cpp.
References QBasicDrag::cancel(), QBasicDrag::drag(), QBasicDrag::m_sourceWindow, and sendDragLeave().
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overrideprotectedvirtual |
Implements QBasicDrag.
Definition at line 407 of file qsimpledrag.cpp.
References QPlatformDropQtResponse::acceptedAction(), QBasicDrag::drag(), QBasicDrag::drop(), fromNativeGlobalPixels(), Qt::IgnoreAction, QPlatformDropQtResponse::isAccepted(), mimeData, pos, QBasicDrag::setExecutedDropAction(), topLevelAt(), and window().
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overrideprotectedvirtual |
Implements QBasicDrag.
Definition at line 379 of file qsimpledrag.cpp.
References QPlatformDropQtResponse::acceptedAction(), QBasicDrag::drag(), fromNativeGlobalPixels(), Qt::IgnoreAction, QPlatformDropQtResponse::isAccepted(), QBasicDrag::m_windowUnderCursor, mimeData, QBasicDrag::moveShapedPixmapWindow(), pos, sendDragLeave(), QBasicDrag::setCanDrop(), topLevelAt(), QBasicDrag::updateCursor(), and window().
Referenced by startDrag().
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overrideprotectedvirtual |
Reimplemented from QBasicDrag.
Definition at line 342 of file qsimpledrag.cpp.
References QBasicDrag::canDrop(), Qt::IgnoreAction, QGuiApplication::keyboardModifiers(), QBasicDrag::m_sourceWindow, QBasicDrag::m_windowUnderCursor, QGuiApplication::mouseButtons(), move(), QCursor::pos(), qCDebug, QBasicDrag::setCanDrop(), QBasicDrag::setExecutedDropAction(), QBasicDrag::startDrag(), QHighDpi::toNativePixels(), topLevelAt(), and QBasicDrag::updateCursor().
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1.9.7