QGraphicsScale

Note

This class was introduced in Qt 4.6

Synopsis

Functions

• def origin ()
• def setOrigin (point)
• def setXScale (arg__1)
• def setYScale (arg__1)
• def setZScale (arg__1)
• def xScale ()
• def yScale ()
• def zScale ()

Signals

• def originChanged ()
• def scaleChanged ()
• def xScaleChanged ()
• def yScaleChanged ()
• def zScaleChanged ()

Detailed Description

The PySide.QtGui.QGraphicsScale class provides a scale transformation.

PySide.QtGui.QGraphicsScene provides certain parameters to help control how the scale should be applied.

The origin is the point that the item is scaled from (i.e., it stays fixed relative to the parent as the rest of the item grows). By default the origin is PySide.QtCore.QPointF (0, 0).

The parameters PySide.QtGui.QGraphicsScale.xScale() , PySide.QtGui.QGraphicsScale.yScale() , and PySide.QtGui.QGraphicsScale.zScale() describe the scale factors to apply in horizontal, vertical, and depth directions. They can take on any value, including 0 (to collapse the item to a point) or negative value. A negative PySide.QtGui.QGraphicsScale.xScale() value will mirror the item horizontally. A negative PySide.QtGui.QGraphicsScale.yScale() value will flip the item vertically. A negative PySide.QtGui.QGraphicsScale.zScale() will flip the item end for end.

See also

PySide.QtGui.QGraphicsTransform QGraphicsItem.setScale() QTransform.scale()

class PySide.QtGui.QGraphicsScale([parent=None])

Parameters:parent – PySide.QtCore.QObject

Constructs an empty PySide.QtGui.QGraphicsScale object with the given parent .

PySide.QtGui.QGraphicsScale.origin()

Return type:PySide.QtGui.QVector3D

This property holds the origin of the scale in 3D space..

All scaling will be done relative to this point (i.e., this point will stay fixed, relative to the parent, when the item is scaled).

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.zScale()

PySide.QtGui.QGraphicsScale.originChanged()

PySide.QtGui.QGraphicsScale.scaleChanged()

PySide.QtGui.QGraphicsScale.setOrigin(point)

Parameters:point – PySide.QtGui.QVector3D

This property holds the origin of the scale in 3D space..

All scaling will be done relative to this point (i.e., this point will stay fixed, relative to the parent, when the item is scaled).

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.zScale()

PySide.QtGui.QGraphicsScale.setXScale(arg__1)

Parameters:arg__1 – PySide.QtCore.qreal

This property holds the horizontal scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be mirrored horizontally around its origin.

See also

PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.zScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.setYScale(arg__1)

Parameters:arg__1 – PySide.QtCore.qreal

This property holds the vertical scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be flipped vertically around its origin.

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.zScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.setZScale(arg__1)

Parameters:arg__1 – PySide.QtCore.qreal

This property holds the depth scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be flipped end for end around its origin.

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.xScale()

Return type:PySide.QtCore.qreal

This property holds the horizontal scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be mirrored horizontally around its origin.

See also

PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.zScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.xScaleChanged()

PySide.QtGui.QGraphicsScale.yScale()

Return type:PySide.QtCore.qreal

This property holds the vertical scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be flipped vertically around its origin.

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.zScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.yScaleChanged()

PySide.QtGui.QGraphicsScale.zScale()

Return type:PySide.QtCore.qreal

This property holds the depth scale factor..

The scale factor can be any real number; the default value is 1.0. If you set the factor to 0.0, the item will be collapsed to a single point. If you provide a negative value, the item will be flipped end for end around its origin.

See also

PySide.QtGui.QGraphicsScale.xScale() PySide.QtGui.QGraphicsScale.yScale() PySide.QtGui.QGraphicsScale.origin()

PySide.QtGui.QGraphicsScale.zScaleChanged()