TouchPoint

The TouchPoint class provides information about a touch point in a QTouchEvent . More

Inheritance diagram of PySide2.QtGui.QTouchEvent.TouchPoint

New in version 4.6.

Synopsis

Functions

Detailed Description

PySide2/QtGui/images/touchpoint-metrics.png
class PySide2.QtGui.QTouchEvent.TouchPoint(other)

PySide2.QtGui.QTouchEvent.TouchPoint([id=-1])

param id:

int

param other:

PySide2.QtGui.QTouchEvent.TouchPoint

Constructs a TouchPoint for use in a QTouchEvent .

PySide2.QtGui.QTouchEvent.TouchPoint.InfoFlag

The values of this enum describe additional information about a touch point.

Constant

Description

QTouchEvent.TouchPoint.Pen

Indicates that the contact has been made by a designated pointing device (e.g. a pen) instead of a finger.

QTouchEvent.TouchPoint.Token

Indicates that the contact has been made by a fiducial object (e.g. a knob or other token) instead of a finger.

PySide2.QtGui.QTouchEvent.TouchPoint.ellipseDiameters()
Return type:

PySide2.QtCore.QSizeF

Returns the width and height of the bounding ellipse of this touch point. The return value is in logical pixels. Most touchscreens do not detect the shape of the contact point, so a null size is the most common value. In other cases the diameters may be nonzero and equal (the ellipse is approximated as a circle).

PySide2.QtGui.QTouchEvent.TouchPoint.flags()
Return type:

InfoFlags

Returns additional information about the touch point.

See also

InfoFlags

PySide2.QtGui.QTouchEvent.TouchPoint.id()
Return type:

int

Returns the id number of this touch point.

Do not assume that id numbers start at zero or that they are sequential. Such an assumption is often false due to the way the underlying drivers work.

PySide2.QtGui.QTouchEvent.TouchPoint.lastNormalizedPos()
Return type:

PySide2.QtCore.QPointF

Returns the normalized position of this touch point from the previous touch event.

The coordinates are normalized to the size of the touch device, i.e. (0,0) is the top-left corner and (1,1) is the bottom-right corner.

PySide2.QtGui.QTouchEvent.TouchPoint.lastPos()
Return type:

PySide2.QtCore.QPointF

Returns the position of this touch point from the previous touch event, relative to the widget or QGraphicsItem that received the event.

See also

pos() startPos()

PySide2.QtGui.QTouchEvent.TouchPoint.lastScenePos()
Return type:

PySide2.QtCore.QPointF

Returns the scene position of this touch point from the previous touch event.

The scene position is the position in QGraphicsScene coordinates if the QTouchEvent is handled by a QGraphicsItem::touchEvent() reimplementation, and identical to the screen position for widgets.

PySide2.QtGui.QTouchEvent.TouchPoint.lastScreenPos()
Return type:

PySide2.QtCore.QPointF

Returns the screen position of this touch point from the previous touch event.

PySide2.QtGui.QTouchEvent.TouchPoint.normalizedPos()
Return type:

PySide2.QtCore.QPointF

Returns the normalized position of this touch point.

The coordinates are normalized to the size of the touch device, i.e. (0,0) is the top-left corner and (1,1) is the bottom-right corner.

PySide2.QtGui.QTouchEvent.TouchPoint.pos()
Return type:

PySide2.QtCore.QPointF

Returns the position of this touch point, relative to the widget or QGraphicsItem that received the event.

PySide2.QtGui.QTouchEvent.TouchPoint.pressure()
Return type:

float

Returns the pressure of this touch point. The return value is in the range 0.0 to 1.0.

PySide2.QtGui.QTouchEvent.TouchPoint.rawScreenPositions()
Return type:

Returns the raw, unfiltered positions for the touch point. The positions are in native screen coordinates. To get local coordinates you can use mapFromGlobal() of the QWindow returned by window() .

Note

Returns an empty vector if the touch device’s capabilities do not include RawPositions .

Note

Native screen coordinates refer to the native orientation of the screen which, in case of mobile devices, is typically portrait. This means that on systems capable of screen orientation changes the positions in this list will not reflect the current orientation (unlike pos() , screenPos() , etc.) and will always be reported in the native orientation.

See also

capabilities() device() window()

PySide2.QtGui.QTouchEvent.TouchPoint.rect()
Return type:

PySide2.QtCore.QRectF

Note

This function is deprecated.

This function is deprecated since 5.9 because it returns the outer bounds of the touchpoint regardless of rotation, whereas a touchpoint is more correctly modeled as an ellipse at position pos() with ellipseDiameters() which are independent of rotation() .

PySide2.QtGui.QTouchEvent.TouchPoint.rotation()
Return type:

float

Returns the angular orientation of this touch point. The return value is in degrees, where zero (the default) indicates the finger or token is pointing upwards, a negative angle means it’s rotated to the left, and a positive angle means it’s rotated to the right. Most touchscreens do not detect rotation, so zero is the most common value.

PySide2.QtGui.QTouchEvent.TouchPoint.scenePos()
Return type:

PySide2.QtCore.QPointF

Returns the scene position of this touch point.

The scene position is the position in QGraphicsScene coordinates if the QTouchEvent is handled by a QGraphicsItem::touchEvent() reimplementation, and identical to the screen position for widgets.

PySide2.QtGui.QTouchEvent.TouchPoint.sceneRect()
Return type:

PySide2.QtCore.QRectF

Note

This function is deprecated.

This function is deprecated since 5.9 because it returns the outer bounds of the touchpoint regardless of rotation, whereas a touchpoint is more correctly modeled as an ellipse at position scenePos() with ellipseDiameters() which are independent of rotation() .

PySide2.QtGui.QTouchEvent.TouchPoint.screenPos()
Return type:

PySide2.QtCore.QPointF

Returns the screen position of this touch point.

PySide2.QtGui.QTouchEvent.TouchPoint.screenRect()
Return type:

PySide2.QtCore.QRectF

Note

This function is deprecated.

This function is deprecated since 5.9 because it returns the outer bounds of the touchpoint regardless of rotation, whereas a touchpoint is more correctly modeled as an ellipse at position screenPos() with ellipseDiameters() which are independent of rotation() .

PySide2.QtGui.QTouchEvent.TouchPoint.setEllipseDiameters(dia)
Parameters:

diaPySide2.QtCore.QSizeF

PySide2.QtGui.QTouchEvent.TouchPoint.setFlags(flags)
Parameters:

flagsInfoFlags

See also

flags()

PySide2.QtGui.QTouchEvent.TouchPoint.setId(id)
Parameters:

id – int

See also

id()

PySide2.QtGui.QTouchEvent.TouchPoint.setLastNormalizedPos(lastNormalizedPos)
Parameters:

lastNormalizedPosPySide2.QtCore.QPointF

PySide2.QtGui.QTouchEvent.TouchPoint.setLastPos(lastPos)
Parameters:

lastPosPySide2.QtCore.QPointF

See also

lastPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setLastScenePos(lastScenePos)
Parameters:

lastScenePosPySide2.QtCore.QPointF

See also

lastScenePos()

PySide2.QtGui.QTouchEvent.TouchPoint.setLastScreenPos(lastScreenPos)
Parameters:

lastScreenPosPySide2.QtCore.QPointF

See also

lastScreenPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setNormalizedPos(normalizedPos)
Parameters:

normalizedPosPySide2.QtCore.QPointF

See also

normalizedPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setPos(pos)
Parameters:

posPySide2.QtCore.QPointF

See also

pos()

PySide2.QtGui.QTouchEvent.TouchPoint.setPressure(pressure)
Parameters:

pressure – float

See also

pressure()

PySide2.QtGui.QTouchEvent.TouchPoint.setRawScreenPositions(positions)
Parameters:

positions

PySide2.QtGui.QTouchEvent.TouchPoint.setRect(rect)
Parameters:

rectPySide2.QtCore.QRectF

Note

This function is deprecated.

See also

rect()

PySide2.QtGui.QTouchEvent.TouchPoint.setRotation(angle)
Parameters:

angle – float

See also

rotation()

PySide2.QtGui.QTouchEvent.TouchPoint.setScenePos(scenePos)
Parameters:

scenePosPySide2.QtCore.QPointF

See also

scenePos()

PySide2.QtGui.QTouchEvent.TouchPoint.setSceneRect(sceneRect)
Parameters:

sceneRectPySide2.QtCore.QRectF

Note

This function is deprecated.

See also

sceneRect()

PySide2.QtGui.QTouchEvent.TouchPoint.setScreenPos(screenPos)
Parameters:

screenPosPySide2.QtCore.QPointF

See also

screenPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setScreenRect(screenRect)
Parameters:

screenRectPySide2.QtCore.QRectF

Note

This function is deprecated.

See also

screenRect()

PySide2.QtGui.QTouchEvent.TouchPoint.setStartNormalizedPos(startNormalizedPos)
Parameters:

startNormalizedPosPySide2.QtCore.QPointF

PySide2.QtGui.QTouchEvent.TouchPoint.setStartPos(startPos)
Parameters:

startPosPySide2.QtCore.QPointF

See also

startPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setStartScenePos(startScenePos)
Parameters:

startScenePosPySide2.QtCore.QPointF

See also

startScenePos()

PySide2.QtGui.QTouchEvent.TouchPoint.setStartScreenPos(startScreenPos)
Parameters:

startScreenPosPySide2.QtCore.QPointF

See also

startScreenPos()

PySide2.QtGui.QTouchEvent.TouchPoint.setState(state)
Parameters:

stateTouchPointStates

See also

state()

PySide2.QtGui.QTouchEvent.TouchPoint.setUniqueId(uid)
Parameters:

uid – int

See also

uniqueId()

PySide2.QtGui.QTouchEvent.TouchPoint.setVelocity(v)
Parameters:

vPySide2.QtGui.QVector2D

See also

velocity()

PySide2.QtGui.QTouchEvent.TouchPoint.startNormalizedPos()
Return type:

PySide2.QtCore.QPointF

Returns the normalized starting position of this touch point.

The coordinates are normalized to the size of the touch device, i.e. (0,0) is the top-left corner and (1,1) is the bottom-right corner.

PySide2.QtGui.QTouchEvent.TouchPoint.startPos()
Return type:

PySide2.QtCore.QPointF

Returns the starting position of this touch point, relative to the widget or QGraphicsItem that received the event.

See also

pos() lastPos()

PySide2.QtGui.QTouchEvent.TouchPoint.startScenePos()
Return type:

PySide2.QtCore.QPointF

Returns the starting scene position of this touch point.

The scene position is the position in QGraphicsScene coordinates if the QTouchEvent is handled by a QGraphicsItem::touchEvent() reimplementation, and identical to the screen position for widgets.

PySide2.QtGui.QTouchEvent.TouchPoint.startScreenPos()
Return type:

PySide2.QtCore.QPointF

Returns the starting screen position of this touch point.

PySide2.QtGui.QTouchEvent.TouchPoint.state()
Return type:

TouchPointState

Returns the current state of this touch point.

PySide2.QtGui.QTouchEvent.TouchPoint.swap(other)
Parameters:

otherPySide2.QtGui.QTouchEvent.TouchPoint

PySide2.QtGui.QTouchEvent.TouchPoint.uniqueId()
Return type:

PySide2.QtGui.QPointingDeviceUniqueId

Returns the unique ID of this touch point or token, if any.

It is normally invalid (see isValid() ), because touchscreens cannot uniquely identify fingers. But when the Token flag is set, it is expected to uniquely identify a specific token (fiducial object).

See also

flags

PySide2.QtGui.QTouchEvent.TouchPoint.velocity()
Return type:

PySide2.QtGui.QVector2D

Returns a velocity vector for this touch point. The vector is in the screen’s coordinate system, using pixels per seconds for the magnitude.

Note

The returned vector is only valid if the touch device’s capabilities include Velocity .

See also

capabilities() device()