QStyleOptionGraphicsItem

Synopsis

Static functions

• def levelOfDetailFromTransform (worldTransform)

Detailed Description

The PySide.QtGui.QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a PySide.QtGui.QGraphicsItem .

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters.

For an example demonstrating how style options can be used, see the Styles example.

See also

PySide.QtGui.QStyleOption QGraphicsItem.paint()

class PySide.QtGui.QStyleOptionGraphicsItem

class PySide.QtGui.QStyleOptionGraphicsItem(other)

class PySide.QtGui.QStyleOptionGraphicsItem(version)

Parameters:

• version – PySide.QtCore.int
• other – PySide.QtGui.QStyleOptionGraphicsItem

Constructs a PySide.QtGui.QStyleOptionGraphicsItem .

Constructs a copy of other .

PySide.QtGui.QStyleOptionGraphicsItem.StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each PySide.QtGui.QStyleOption subclass.

Constant	Description
QStyleOptionGraphicsItem.Version	1

The version is used by PySide.QtGui.QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast() , you normally do not need to check it.

See also

QStyleOptionGraphicsItem.StyleOptionType

PySide.QtGui.QStyleOptionGraphicsItem.StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each PySide.QtGui.QStyleOption subclass.

Constant	Description
QStyleOptionGraphicsItem.Type	The type of style option provided ( SO_GraphicsItem for this class).

The type is used internally by PySide.QtGui.QStyleOption , its subclasses, and qstyleoption_cast() to determine the type of style option. In general you do not need to worry about this unless you want to create your own PySide.QtGui.QStyleOption subclass and your own styles.

See also

QStyleOptionGraphicsItem.StyleOptionVersion

PySide.QtGui.QStyleOptionGraphicsItem.exposedRect

PySide.QtGui.QStyleOptionGraphicsItem.matrix

PySide.QtGui.QStyleOptionGraphicsItem.levelOfDetail

static PySide.QtGui.QStyleOptionGraphicsItem.levelOfDetailFromTransform(worldTransform)

Parameters:worldTransform – PySide.QtGui.QTransform Return type:PySide.QtCore.qreal

Returns the level of detail from the worldTransform .

Its value represents the maximum value of the height and width of a unity rectangle, mapped using the worldTransform of the painter used to draw the item. By default, if no transformations are applied, its value is 1. If zoomed out 1:2, the level of detail will be 0.5, and if zoomed in 2:1, its value is 2.