QtGui.QPinchGesture Class Reference

The QPinchGesture class describes a pinch gesture made by the user. More...

Inheritance diagram for QtGui.QPinchGesture:

Collaboration diagram for QtGui.QPinchGesture:

Public Types
enum	ChangeFlag { CenterPointChanged = 4, RotationAngleChanged = 2, ScaleFactorChanged = 1 }
	More...
Public Types inherited from QtGui.QGesture
enum	GestureCancelPolicy { CancelAllInContext = 1, CancelNone = 0 }
	More...

Public Member Functions
	QPinchGesture (QObject parent=null)
override void	CreateProxy ()
new QPinchGesture.ChangeFlag	changeFlags ()
new double	lastRotationAngle ()
new double	lastScaleFactor ()
new double	rotationAngle ()
new double	scaleFactor ()
new void	SetChangeFlags (QPinchGesture.ChangeFlag value)
new void	SetLastRotationAngle (double value)
new void	SetLastScaleFactor (double value)
new void	SetRotationAngle (double value)
new void	SetScaleFactor (double value)
new void	SetTotalChangeFlags (QPinchGesture.ChangeFlag value)
new void	SetTotalRotationAngle (double value)
new void	SetTotalScaleFactor (double value)
new QPinchGesture.ChangeFlag	totalChangeFlags ()
new double	totalRotationAngle ()
new double	totalScaleFactor ()
new void	Dispose ()
Public Member Functions inherited from QtGui.QGesture
	QGesture (QObject parent=null)
new void	UnsetHotSpot ()
new void	Dispose ()
Public Member Functions inherited from QtCore.QObject
	QObject (QObject parent=null)
new bool	BlockSignals (bool b)
new System.Collections.Generic.List < QObject >	Children ()
new bool	Connect (QObject sender, string signal, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
new void	DeleteLater ()
new bool	Disconnect (QObject receiver, string member=null)
new bool	Disconnect (string signal=null, QObject receiver=null, string member=null)
new void	DumpObjectInfo ()
new void	DumpObjectTree ()
new System.Collections.Generic.List < QByteArray >	DynamicPropertyNames ()
virtual bool	OnEvent (QEvent arg1)
virtual bool	EventFilter (QObject arg1, QEvent arg2)
new bool	Inherits (string classname)
new void	InstallEventFilter (QObject arg1)
new bool	IsWidgetType ()
new void	KillTimer (int id)
new object	Property (string name)
new void	RemoveEventFilter (QObject arg1)
new bool	SetProperty (string name, object value)
new void	SetUserData (uint id, QObjectUserData data)
new bool	SignalsBlocked ()
new int	StartTimer (int interval)
new QObjectUserData	UserData (uint id)
new void	Dispose ()
Public Member Functions inherited from QtCore.Qt
delegate QTextStream	FuncQTextStreamQTextStream (QTextStream qTextStream)
delegate string	FuncStringQByteArray (QByteArray qByteArray)
delegate QByteArray	FuncQByteArrayString (string @string)
delegate void	ActionQtMsgTypeString (QtMsgType qtMsgType, string @string)
delegate QObject	FuncQObject ()

Static Public Member Functions
static string	Tr (string s, string c=null)
static string	Tr (string s, string c, int n)
static string	TrUtf8 (string s, string c=null)
static string	TrUtf8 (string s, string c, int n)
Static Public Member Functions inherited from QtGui.QGesture
static string	Tr (string s, string c=null)
static string	Tr (string s, string c, int n)
static string	TrUtf8 (string s, string c=null)
static string	TrUtf8 (string s, string c, int n)
Static Public Member Functions inherited from QtCore.QObject
static bool	Connect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod method, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
static bool	Connect (QObject sender, string signal, QObject receiver, string member, Qt.ConnectionType arg5=Qt.ConnectionType.AutoConnection)
static bool	Disconnect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod member)
static bool	Disconnect (QObject sender, string signal, QObject receiver, string member)
static uint	RegisterUserData ()
static string	Tr (string s, string c=null)
static string	Tr (string s, string c, int n)
static string	TrUtf8 (string s, string c=null)
static string	TrUtf8 (string s, string c, int n)
Static Public Member Functions inherited from QtCore.Qt
static QDataStream	Write (QDataStream s, object p)
static QDataStream	Write (QDataStream arg1, QSizeF arg2)
static QTextStream	Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)
static QDataStream	Write (QDataStream arg1, QPoint arg2)
static QDataStream	Write (QDataStream arg1, QLineF arg2)
static QDataStream	Write (QDataStream arg1, QPointF arg2)
static QDataStream	Write (QDataStream arg1, QChar arg2)
static QDataStream	Write (QDataStream arg1, QByteArray arg2)
static QDataStream	Write (QDataStream arg1, QEasingCurve arg2)
static QDataStream	Write (QDataStream arg1, QRectF arg2)
static QDataStream	Write (QDataStream arg1, QDateTime arg2)
static QDataStream	Write (QDataStream arg1, QUrl arg2)
static QDataStream	Write (QDataStream arg1, QTime arg2)
static QDataStream	Write (QDataStream arg1, QLocale arg2)
static QDataStream	Write (QDataStream arg1, QBitArray arg2)
static QDataStream	Write (QDataStream arg1, QUuid arg2)
static QDataStream	Write (QDataStream arg1, QLine arg2)
static QDataStream	Write (QDataStream arg1, QDate arg2)
static QDataStream	Write (QDataStream @out, QRegExp regExp)
static QDataStream	Write (QDataStream arg1, QRect arg2)
static QDataStream	Write (QDataStream arg1, QSize arg2)
static QDataStream	Write (QDataStream s, QVariant.Type p)
static QDataStream	Write (QDataStream arg1, string arg2)
static QDataStream	Write (QDataStream @out, System.Collections.Generic.List< string > list)
static QDataStream	Read (QDataStream arg1, QChar arg2)
static QDataStream	Read (QDataStream arg1, QLocale arg2)
static QDataStream	Read (QDataStream arg1, QRect arg2)
static QDataStream	Read (QDataStream arg1, QEasingCurve arg2)
static QDataStream	Read (QDataStream arg1, QDate arg2)
static QDataStream	Read (QDataStream arg1, QUrl arg2)
static QDataStream	Read (QDataStream arg1, QUuid arg2)
static QTextStream	Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)
static QDataStream	Read (QDataStream arg1, QLineF arg2)
static QDataStream	Read (QDataStream arg1, QRectF arg2)
static QDataStream	Read (QDataStream arg1, QPointF arg2)
static QDataStream	Read (QDataStream arg1, QLine arg2)
static QDataStream	Read (QDataStream arg1, QBitArray arg2)
static QDataStream	Read (QDataStream arg1, QSize arg2)
static QDataStream	Read (QDataStream arg1, QDateTime arg2)
static QDataStream	Read (QDataStream arg1, QTime arg2)
static QDataStream	Read (QDataStream arg1, QPoint arg2)
static QDataStream	Read (QDataStream @in, QRegExp regExp)
static QDataStream	Read (QDataStream s, object p)
static QDataStream	Read (QDataStream arg1, QByteArray arg2)
static QDataStream	Read (QDataStream arg1, QSizeF arg2)
static QDataStream	Read (QDataStream arg1, string arg2)
static QDataStream	Read (QDataStream s, QVariant.Type p)
static QDataStream	Read (QDataStream @in, System.Collections.Generic.List< string > list)
static double	qAcos (double v)
static void	qAddPostRoutine (System.Action arg1)
static string	qAppName ()
static double	qAsin (double v)
static double	qAtan (double v)
static double	qAtan2 (double x, double y)
static void	qBadAlloc ()
static int	qCeil (double v)
static ushort	qChecksum (string s, uint len)
static QByteArray	qCompress (QByteArray data)
static QByteArray	qCompress (QByteArray data, int compressionLevel=-1)
static QByteArray	qCompress (Pointer< byte > data, int nbytes)
static QByteArray	qCompress (Pointer< byte > data, int nbytes, int compressionLevel=-1)
static double	qCos (double v)
static double	qExp (double v)
static double	qFabs (double v)
static double	qFastCos (double x)
static double	qFastSin (double x)
static string	qFlagLocation (string method)
static int	qFloor (double v)
static bool	qFuzzyCompare (double p1, double p2)
static bool	qFuzzyCompare (float p1, float p2)
static bool	qFuzzyIsNull (double d)
static bool	qFuzzyIsNull (float f)
static uint	qHash (QBitArray key)
static uint	qHash (QChar key)
static uint	qHash (QStringRef key)
static uint	qHash (QUrl url)
static uint	qHash (QPersistentModelIndex index)
static uint	qHash (QByteArray key)
static uint	qHash (QModelIndex index)
static uint	qHash (uint key)
static uint	qHash (sbyte key)
static uint	qHash (byte key)
static uint	qHash (short key)
static uint	qHash (NativeLong key)
static uint	qHash (ushort key)
static uint	qHash (long key)
static uint	qHash (ulong key)
static uint	qHash (int key)
static uint	qHash (string key)
static uint	qHash (NativeULong key)
static double	qInf ()
static Qt.ActionQtMsgTypeString	qInstallMsgHandler (Qt.ActionQtMsgTypeString arg1)
static int	qIntCast (float f)
static int	qIntCast (double f)
static bool	qIsFinite (double d)
static bool	qIsFinite (float f)
static bool	qIsInf (float f)
static bool	qIsInf (double d)
static bool	qIsNaN (float f)
static bool	qIsNaN (double d)
static bool	qIsNull (float f)
static bool	qIsNull (double d)
static double	qLn (double v)
static double	qPow (double x, double y)
static double	qQNaN ()
static void	qRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)
static void	qRemovePostRoutine (System.Action arg1)
static int	qRound (double d)
static long	qRound64 (double d)
static double	qSNaN ()
static bool	qSharedBuild ()
static double	qSin (double v)
static double	qSqrt (double v)
static bool	qStringComparisonHelper (QStringRef s1, string s2)
static double	qTan (double v)
static QByteArray	qUncompress (QByteArray data)
static QByteArray	qUncompress (Pointer< byte > data, int nbytes)
static string	qVersion ()
static void	Qbswap_helper (Pointer< byte > src, Pointer< byte > dest, int size)
static QByteArray	Qgetenv (string varName)
static bool	Qputenv (string varName, QByteArray value)
static int	Qrand ()
static void	Qsrand (uint seed)
static int	Qstrcmp (QByteArray str1, QByteArray str2)
static int	Qstrcmp (QByteArray str1, string str2)
static int	Qstrcmp (string str1, QByteArray str2)
static int	Qstrcmp (string str1, string str2)
static Pointer< sbyte >	Qstrcpy (Pointer< sbyte > dst, string src)
static Pointer< sbyte >	Qstrdup (string arg1)
static int	Qstricmp (string arg1, string arg2)
static uint	Qstrlen (string str)
static int	Qstrncmp (string str1, string str2, uint len)
static Pointer< sbyte >	Qstrncpy (Pointer< sbyte > dst, string src, uint len)
static int	Qstrnicmp (string arg1, string arg2, uint len)
static uint	Qstrnlen (string str, uint maxlen)
static string	QtTrId (string id, int n=-1)

Protected Member Functions
	QPinchGesture (System.Type dummy)
Protected Member Functions inherited from QtGui.QGesture
	QGesture (System.Type dummy)
Protected Member Functions inherited from QtCore.QObject
	QObject (System.Type dummy)
virtual void	OnChildEvent (QChildEvent arg1)
virtual void	ConnectNotify (string signal)
virtual void	OnCustomEvent (QEvent arg1)
new void	OnDestroyed (QObject arg1=null)
virtual void	DisconnectNotify (string signal)
new int	Receivers (string signal)
new QObject	Sender ()
new int	SenderSignalIndex ()
virtual void	OnTimerEvent (QTimerEvent arg1)

Properties
new ChangeFlag	TotalChangeFlags [get, set]
new ChangeFlag	ChangeFlags [get, set]
new double	TotalScaleFactor [get, set]
new double	LastScaleFactor [get, set]
new double	ScaleFactor [get, set]
new double	TotalRotationAngle [get, set]
new double	LastRotationAngle [get, set]
new double	RotationAngle [get, set]
new QPointF	StartCenterPoint [get, set]
new QPointF	LastCenterPoint [get, set]
new QPointF	CenterPoint [get, set]
static new QMetaObject	StaticMetaObject [get]
new IQPinchGestureSignals	Emit [get]
Properties inherited from QtGui.QGesture
new Qt.GestureState	State [get]
new Qt.GestureType	GestureType [get]
new QGesture.GestureCancelPolicy	gestureCancelPolicy [get, set]
new QPointF	HotSpot [get, set]
new bool	HasHotSpot [get]
static new QMetaObject	StaticMetaObject [get]
new IQGestureSignals	Emit [get]
Properties inherited from QtCore.QObject
virtual EventHandler < QEventArgs< QChildEvent > >	ChildEvent
virtual EventHandler < QEventArgs< QEvent > >	CustomEvent
virtual EventHandler < QEventArgs< QEvent > >	Event
virtual EventHandler < QEventArgs< QTimerEvent > >	TimerEvent
Slot< QObject >	DestroyedQObject
Slot	Destroyed
new QObject	Parent [get, set]
virtual System.IntPtr	SmokeObject [get, set]
new string	ObjectName [get, set]
static new QMetaObject	StaticMetaObject [get]
static new QMetaObject	StaticQtMetaObject [get]
new IQObjectSignals	Emit [get]

Additional Inherited Members
Protected Attributes inherited from QtCore.QObject
object	Q_EMIT = null
SmokeInvocation	interceptor
readonly List< QEventHandler >	eventFilters = new List<QEventHandler>()

Detailed Description

The QPinchGesture class describes a pinch gesture made by the user.

A pinch gesture is a form of touch user input in which the user typically touches two points on the input device with a thumb and finger, before moving them closer together or further apart to change the scale factor, zoom, or level of detail of the user interface.

For an overview of gesture handling in Qt and information on using gestures in your applications, see the Gestures Programming document.

Instead of repeatedly applying the same pinching gesture, the user may continue to touch the input device in one place, and apply a second touch to a new point, continuing the gesture. When this occurs, gesture events will continue to be delivered to the target object, containing an instance of QPinchGesture in the Qt::GestureUpdated state.

See also QPanGesture and QSwipeGesture.

Member Enumeration Documentation

enum QtGui.QPinchGesture.ChangeFlag

This enum describes the changes that can occur to the properties of the gesture object.

See also changeFlags and totalChangeFlags.

Enumerator:

CenterPointChanged	The center point held by centerPoint changed.
RotationAngleChanged	The rotation angle held by rotationAngle changed.
ScaleFactorChanged	The scale factor held by scaleFactor changed.

Constructor & Destructor Documentation

QtGui.QPinchGesture.QPinchGesture ( System.Type  dummy )

protected

QtGui.QPinchGesture.QPinchGesture

(

QObject

parent = null

)

Member Function Documentation

new QPinchGesture.ChangeFlag QtGui.QPinchGesture.changeFlags

(

)

override void QtGui.QPinchGesture.CreateProxy ( )

virtual

Reimplemented from QtGui.QGesture.

new void QtGui.QPinchGesture.Dispose

(

)

new double QtGui.QPinchGesture.lastRotationAngle

(

)

new double QtGui.QPinchGesture.lastScaleFactor

(

)

new double QtGui.QPinchGesture.rotationAngle

(

)

new double QtGui.QPinchGesture.scaleFactor

(

)

new void QtGui.QPinchGesture.SetChangeFlags

(

QPinchGesture.ChangeFlag

value

)

new void QtGui.QPinchGesture.SetLastRotationAngle

(

double

value

)

new void QtGui.QPinchGesture.SetLastScaleFactor

(

double

value

)

new void QtGui.QPinchGesture.SetRotationAngle

(

double

value

)

new void QtGui.QPinchGesture.SetScaleFactor

(

double

value

)

new void QtGui.QPinchGesture.SetTotalChangeFlags

(

QPinchGesture.ChangeFlag

value

)

new void QtGui.QPinchGesture.SetTotalRotationAngle

(

double

value

)

new void QtGui.QPinchGesture.SetTotalScaleFactor

(

double

value

)

new QPinchGesture.ChangeFlag QtGui.QPinchGesture.totalChangeFlags

(

)

new double QtGui.QPinchGesture.totalRotationAngle

(

)

new double QtGui.QPinchGesture.totalScaleFactor

(

)

static string QtGui.QPinchGesture.Tr ( string  s, string  c = null  )

static

static string QtGui.QPinchGesture.Tr ( string  s, string  c, int  n  )

static

static string QtGui.QPinchGesture.TrUtf8 ( string  s, string  c = null  )

static

static string QtGui.QPinchGesture.TrUtf8 ( string  s, string  c, int  n  )

static

Property Documentation

new QPointF QtGui.QPinchGesture.CenterPoint

getset

This property holds the current center point.

The center point is the midpoint between the two input points in the gesture.

new ChangeFlag QtGui.QPinchGesture.ChangeFlags

getset

This property holds the property of the gesture that has changed in the current step.

This property indicates which of the other properties has changed since the previous gesture event included information about this gesture. You can use this information to determine which aspect of your user interface needs to be updated.

new IQPinchGestureSignals QtGui.QPinchGesture.Emit

getprotected

new QPointF QtGui.QPinchGesture.LastCenterPoint

getset

This property holds the last position of the center point recorded for this gesture.

new double QtGui.QPinchGesture.LastRotationAngle

getset

This property holds the last reported angle covered by the gesture motion.

The last rotation angle is the angle as reported in the rotationAngle property when a previous gesture event was delivered for this gesture.

new double QtGui.QPinchGesture.LastScaleFactor

getset

This property holds the last scale factor recorded for this gesture.

The last scale factor contains the scale factor reported in the scaleFactor property when a previous gesture event included information about this gesture.

If no previous event was delivered with information about this gesture (i.e., this gesture object contains information about the first movement in the gesture) then this property contains zero.

new double QtGui.QPinchGesture.RotationAngle

getset

This property holds the angle covered by the gesture motion.

new double QtGui.QPinchGesture.ScaleFactor

getset

This property holds the current scale factor.

The scale factor measures the scale factor associated with the distance between two of the user's inputs on a touch device.

new QPointF QtGui.QPinchGesture.StartCenterPoint

getset

This property holds the starting position of the center point.

new QMetaObject QtGui.QPinchGesture.StaticMetaObject

staticget

new ChangeFlag QtGui.QPinchGesture.TotalChangeFlags

getset

This property holds the property of the gesture that has change.

This property indicates which of the other properties has changed since the gesture has started. You can use this information to determine which aspect of your user interface needs to be updated.

new double QtGui.QPinchGesture.TotalRotationAngle

getset

This property holds the total angle covered by the gesture.

This total angle measures the complete angle covered by the gesture. Usually, this is equal to the value held by the rotationAngle property, except in the case where the user performs multiple rotations by removing and repositioning one of the touch points, as described above. In this case, the total angle will be the sum of the rotation angles for the multiple stages of the gesture.

new double QtGui.QPinchGesture.TotalScaleFactor

getset

This property holds the total scale factor.

The total scale factor measures the total change in scale factor from the original value to the current scale factor.