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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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Public Member Functions | Static Public Member Functions | List of all members
QQuickPlanarTransform Class Reference

#include <qquickvaluetypes_p.h>

+ Inheritance diagram for QQuickPlanarTransform:
+ Collaboration diagram for QQuickPlanarTransform:

Public Member Functions

 QQuickPlanarTransform (QObject *parent=nullptr)
 \qmltype PlanarTransform \inqmlmodule QtQuick
 
- 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 Q_INVOKABLE QMatrix4x4 identity ()
 \qmlmethod matrix4x4 PlanarTransform::identity()
 
static Q_INVOKABLE QMatrix4x4 fromAffineMatrix (float scaleX, float shearY, float shearX, float scaleY, float translateX, float translateY)
 \qmlmethod matrix4x4 PlanarTransform::fromAffineMatrix(real scaleX, real shearY, real shearX, real scaleY, real translateX, real translateY)
 
static Q_INVOKABLE QMatrix4x4 fromTranslate (float translateX, float translateY)
 \qmlmethod matrix4x4 PlanarTransform::fromTranslate(real translateX, real translateY)
 
static Q_INVOKABLE QMatrix4x4 fromScale (float scaleX, float scaleY, float originX=0, float originY=0)
 \qmlmethod matrix4x4 PlanarTransform::fromScale(real scaleX, real scaleY, real originX, real originY)
 
static Q_INVOKABLE QMatrix4x4 fromRotate (float angle, float originX=0, float originY=0)
 \qmlmethod matrix4x4 PlanarTransform::fromRotate(real angle, real originX, real originY)
 
static Q_INVOKABLE QMatrix4x4 fromShear (float shearX, float shearY, float originX=0, float originY=0)
 \qmlmethod matrix4x4 PlanarTransform::fromShear(float shearX, float shearY, float originX, float originY)
 
- 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
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 
 
 
 \macro Q_CLASSINFO(Name, Value)
 

Detailed Description

Definition at line 353 of file qquickvaluetypes_p.h.

Constructor & Destructor Documentation

◆ QQuickPlanarTransform()

QQuickPlanarTransform::QQuickPlanarTransform ( QObject * parent = nullptr)
explicit

\qmltype PlanarTransform \inqmlmodule QtQuick

Since
6.8

Provides utility functions for matrix4x4 when used for 2D transforms.

The PlanarTransform is a global object with utility functions.

It is not instantiable; to use it, call the members of the global PlanarTransform object directly. For example:

\qml Item { transform: Matrix4x4 { matrix: PlanarTransform.fromAffineMatrix(1, 0, 0.36, 1, -36, 0) } } \endqml

Definition at line 808 of file qquickvaluetypes.cpp.

Member Function Documentation

◆ fromAffineMatrix()

QMatrix4x4 QQuickPlanarTransform::fromAffineMatrix ( float scaleX,
float shearY,
float shearX,
float scaleY,
float translateX,
float translateY )
static

\qmlmethod matrix4x4 PlanarTransform::fromAffineMatrix(real scaleX, real shearY, real shearX, real scaleY, real translateX, real translateY)

Returns a matrix4x4 for an affine (non-projecting) 2D transform with the specified values.

This method and its argument order correspond to SVG's matrix() function and the six-argument QTransform constructor. The result is this 4x4 matrix:

\table \row

  • scaleX
  • shearX
  • 0
  • translateX \row
  • shearY
  • scaleY
  • 0
  • translateY \row
  • 0
  • 0
  • 1
  • 0 \row
  • 0
  • 0
  • 0
  • 1 \endtable

Definition at line 844 of file qquickvaluetypes.cpp.

◆ fromRotate()

QMatrix4x4 QQuickPlanarTransform::fromRotate ( float angle,
float originX = 0,
float originY = 0 )
static

\qmlmethod matrix4x4 PlanarTransform::fromRotate(real angle, real originX, real originY)

Returns a matrix4x4 for a 2D transform that rotates by angle degrees around the point (originX, originY).

originX and originY are optional and default to (0, 0).

Definition at line 892 of file qquickvaluetypes.cpp.

◆ fromScale()

QMatrix4x4 QQuickPlanarTransform::fromScale ( float scaleX,
float scaleY,
float originX = 0,
float originY = 0 )
static

\qmlmethod matrix4x4 PlanarTransform::fromScale(real scaleX, real scaleY, real originX, real originY)

Returns a matrix4x4 for a 2D transform that scales by scaleX horizontally and scaleY vertically, centered at the point (originX, originY).

originX and originY are optional and default to (0, 0).

Definition at line 875 of file qquickvaluetypes.cpp.

◆ fromShear()

QMatrix4x4 QQuickPlanarTransform::fromShear ( float shearX,
float shearY,
float originX = 0,
float originY = 0 )
static

\qmlmethod matrix4x4 PlanarTransform::fromShear(float shearX, float shearY, float originX, float originY)

Returns a matrix4x4 for a 2D transform that shears by shearX horizontally and shearY vertically, centered at the point (originX, originY).

originX and originY are optional and default to (0, 0).

Definition at line 909 of file qquickvaluetypes.cpp.

◆ fromTranslate()

QMatrix4x4 QQuickPlanarTransform::fromTranslate ( float translateX,
float translateY )
static

\qmlmethod matrix4x4 PlanarTransform::fromTranslate(real translateX, real translateY)

Returns a matrix4x4 for a 2D transform that translates by translateX horizontally and translateY vertically.

Definition at line 860 of file qquickvaluetypes.cpp.

◆ identity()

QMatrix4x4 QQuickPlanarTransform::identity ( )
static

\qmlmethod matrix4x4 PlanarTransform::identity()

Returns a matrix4x4 for the identity transform.

This is equivalent to \l Qt::matrix4x4().

Definition at line 821 of file qquickvaluetypes.cpp.

The documentation for this class was generated from the following files: