Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
|
Platform cursor implementation. More...
#include <qwindowscursor.h>
Classes | |
struct | PixmapCursor |
Public Types | |
enum class | State { Showing , Hidden , Suppressed } |
Public Types inherited from QPlatformCursor | |
enum | Capability { OverrideCursor = 0x1 } |
Public Member Functions | |
QWindowsCursor (const QPlatformScreen *screen) | |
void | changeCursor (QCursor *widgetCursor, QWindow *widget) override |
Set a cursor on a window. | |
void | setOverrideCursor (const QCursor &cursor) override |
Reimplement this function in subclass to set an override cursor on the associated screen and return true to indicate success. | |
void | clearOverrideCursor () override |
Reimplement this function in subclass to clear the override cursor. | |
QPoint | pos () const override |
void | setPos (const QPoint &pos) override |
QSize | size () const override |
Returns the size of the cursor, in native pixels. | |
CursorHandlePtr | standardWindowCursor (Qt::CursorShape s=Qt::ArrowCursor) |
Return cached standard cursor resources or create new ones. | |
CursorHandlePtr | pixmapWindowCursor (const QCursor &c) |
Return cached pixmap cursor or create new one. | |
QPixmap | dragDefaultCursor (Qt::DropAction action) const |
HCURSOR | hCursor (const QCursor &c) const |
Public Member Functions inherited from QPlatformCursor | |
QPlatformCursor () | |
Constructs a QPlatformCursor. | |
virtual void | pointerEvent (const QMouseEvent &event) |
This method is called by Qt whenever a QMouseEvent is generated by the underlying pointer input. | |
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. | |
bool | moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL) |
Changes the thread affinity for this object and its children and returns true on success. | |
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::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer) |
void | killTimer (int id) |
Kills the timer with timer identifier, id. | |
void | killTimer (Qt::TimerId id) |
template<typename T > | |
T | findChild (QAnyStringView aName, 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 (QAnyStringView 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 > | |
T | findChild (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. | |
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 . | |
Static Public Member Functions | |
static void | enforceOverrideCursor () |
static bool | hasOverrideCursor () |
static HCURSOR | createPixmapCursor (QPixmap pixmap, const QPoint &hotSpot, qreal scaleFactor=1) |
static HCURSOR | createPixmapCursor (const PixmapCursor &pc, qreal scaleFactor=1) |
static PixmapCursor | customCursor (Qt::CursorShape cursorShape, const QPlatformScreen *screen=nullptr) |
static HCURSOR | createCursorFromShape (Qt::CursorShape cursorShape, const QPlatformScreen *screen=nullptr) |
static QPoint | mousePosition () |
static State | cursorState () |
Static Public Member Functions inherited from QPlatformCursor | |
static Capabilities | capabilities () |
static void | setCapabilities (Capabilities c) |
static void | setCapability (Capability c) |
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) |
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. | |
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) | |
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) | |
Platform cursor implementation.
Note that whereas under X11, a cursor can be set as a property of a window, there is only a global SetCursor() function on Windows. Each Window sets on the global cursor on receiving a Enter-event as do the Window manager frames (resize/move handles).
Definition at line 53 of file qwindowscursor.h.
|
strong |
Enumerator | |
---|---|
Showing | |
Hidden | |
Suppressed |
Definition at line 56 of file qwindowscursor.h.
|
explicit |
Definition at line 558 of file qwindowscursor.cpp.
References initResources(), and Q_UNUSED.
Set a cursor on a window.
This is called frequently as the mouse moves over widgets in the window (QLineEdits, etc).
Implements QPlatformCursor.
Definition at line 579 of file qwindowscursor.cpp.
References qWarning, window(), and QWindowsWindow::windowsWindowOf().
|
overridevirtual |
Reimplement this function in subclass to clear the override cursor.
Reimplemented from QPlatformCursor.
Definition at line 620 of file qwindowscursor.cpp.
References QSet< T >::cbegin(), QWindowsContext::instance(), it, and QWindowsWindow::RestoreOverrideCursor.
|
static |
Definition at line 459 of file qwindowscursor.cpp.
References Qt::ArrowCursor, Qt::BitmapCursor, Qt::BlankCursor, Qt::BusyCursor, Qt::ClosedHandCursor, createBitmapCursor(), createPixmapCursor(), Qt::CrossCursor, customCursor(), Qt::DragCopyCursor, Qt::DragLinkCursor, Qt::DragMoveCursor, Qt::ForbiddenCursor, QImage::Format_Mono, Qt::IBeamCursor, IDC_HAND, Qt::OpenHandCursor, Qt::PointingHandCursor, Q_ASSERT, qWarning, screen, Qt::SizeAllCursor, Qt::SizeBDiagCursor, Qt::SizeFDiagCursor, Qt::SizeHorCursor, Qt::SizeVerCursor, Qt::SplitHCursor, Qt::SplitVCursor, systemCursorSize(), Qt::UpArrowCursor, Qt::WaitCursor, and Qt::WhatsThisCursor.
Referenced by defaultCursor(), and standardWindowCursor().
|
inlinestatic |
Definition at line 83 of file qwindowscursor.h.
References createPixmapCursor(), QWindowsCursor::PixmapCursor::hotSpot, and QWindowsCursor::PixmapCursor::pixmap.
Referenced by createPixmapCursor().
|
static |
Definition at line 66 of file qwindowscursor.cpp.
References Qt::color1, Qt::KeepAspectRatio, QPixmap::mask(), pixmap, qFuzzyCompare(), qRound(), qt_createIconMask(), qt_pixmapToWinHBITMAP(), Qt::SmoothTransformation, QPoint::x(), and QPoint::y().
Referenced by createCursorFromShape(), QWindowsOleDropSource::createCursors(), and pixmapWindowCursor().
|
static |
Definition at line 640 of file qwindowscursor.cpp.
References Hidden, Showing, and Suppressed.
Referenced by QWindowsOleDropSource::GiveFeedback().
|
static |
Definition at line 208 of file qwindowscursor.cpp.
References closedhand_bits, Qt::ClosedHandCursor, closedhandm_bits, createPixmapCursorFromData(), Qt::DragCopyCursor, Qt::DragLinkCursor, Qt::DragMoveCursor, hsplit_bits, hsplitm_bits, openhand_bits, Qt::OpenHandCursor, openhandm_bits, screen, screenCursorSize(), Qt::SplitHCursor, Qt::SplitVCursor, standardCursorSize(), vsplit_bits, and vsplitm_bits.
Referenced by createCursorFromShape(), and dragDefaultCursor().
QPixmap QWindowsCursor::dragDefaultCursor | ( | Qt::DropAction | action | ) | const |
Definition at line 688 of file qwindowscursor.cpp.
References Qt::CopyAction, cursor, customCursor(), Qt::DragCopyCursor, Qt::DragLinkCursor, Qt::DragMoveCursor, QImage::Format_ARGB32, QPixmap::fromImage(), QPixmap::isNull(), Qt::LinkAction, Qt::MoveAction, and Qt::TargetMoveAction.
Referenced by QWindowsOleDropSource::createCursors().
|
static |
Definition at line 600 of file qwindowscursor.cpp.
References hasOverrideCursor().
Referenced by QWindowsWindow::applyCursor(), and QWindowsContext::windowsProc().
|
inlinestatic |
Definition at line 75 of file qwindowscursor.h.
Referenced by QWindowsWindow::applyCursor(), enforceOverrideCursor(), and QWindowsContext::windowsProc().
Definition at line 772 of file qwindowscursor.cpp.
References Qt::BitmapCursor, QHash< Key, T >::constEnd(), and QHash< Key, T >::constFind().
|
static |
Definition at line 633 of file qwindowscursor.cpp.
Referenced by QWindowsOleDropSource::createCursors(), pos(), QWindowsOleDropSource::QueryContinueDrag(), and QWindowsTabletSupport::translateTabletPacketEvent().
CursorHandlePtr QWindowsCursor::pixmapWindowCursor | ( | const QCursor & | c | ) |
Return cached pixmap cursor or create new one.
Definition at line 531 of file qwindowscursor.cpp.
References QHash< Key, T >::begin(), cacheKey(), createBitmapCursor(), createPixmapCursor(), QHash< Key, T >::end(), QHash< Key, T >::erase(), QHighDpiScaling::factor(), QHash< Key, T >::find(), QHash< Key, T >::insert(), QPixmap::isNull(), it, QHash< QWindowsPixmapCursorCacheKey, CursorHandlePtr >::iterator, pixmap, and QHash< Key, T >::size().
|
overridevirtual |
Reimplemented from QPlatformCursor.
Definition at line 654 of file qwindowscursor.cpp.
References mousePosition().
Referenced by setPos().
Reimplement this function in subclass to set an override cursor on the associated screen and return true to indicate success.
This function can be implemented on platforms where the cursor is a property of the application or the screen rather than a property of the window. On these platforms, the OverrideCursor capability should be set.
Reimplemented from QPlatformCursor.
Definition at line 606 of file qwindowscursor.cpp.
References cursor, qWarning, and QCursor::shape().
Reimplemented from QPlatformCursor.
Definition at line 659 of file qwindowscursor.cpp.
References pos(), QPoint::x(), and QPoint::y().
|
overridevirtual |
Returns the size of the cursor, in native pixels.
Reimplemented from QPlatformCursor.
Definition at line 669 of file qwindowscursor.cpp.
References QWinRegistryKey::dwordValue(), QPlatformScreen::logicalBaseDpi(), QPlatformScreen::logicalDpi(), and screenCursorSize().
CursorHandlePtr QWindowsCursor::standardWindowCursor | ( | Qt::CursorShape | s = Qt::ArrowCursor | ) |
Return cached standard cursor resources or create new ones.
Definition at line 514 of file qwindowscursor.cpp.
References createCursorFromShape(), QHash< Key, T >::end(), QHash< Key, T >::find(), QHash< Key, T >::insert(), and it.