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QTextLength Class Reference
[QtGui module]

The QTextLength class encapsulates the different types of length used in a QTextDocument. More...



Special Methods

Detailed Description

The QTextLength class encapsulates the different types of length used in a QTextDocument.

When we specify a value for the length of an element in a text document, we often need to provide some other information so that the length is used in the way we expect. For example, when we specify a table width, the value can represent a fixed number of pixels, or it can be a percentage value. This information changes both the meaning of the value and the way it is used.

Generally, this class is used to specify table widths. These can be specified either as a fixed amount of pixels, as a percentage of the containing frame's width, or by a variable width that allows it to take up just the space it requires.

Type Documentation


This enum describes the different types a length object can have.

Constant Value Description
QTextLength.VariableLength 0 The width of the object is variable
QTextLength.FixedLength 1 The width of the object is fixed
QTextLength.PercentageLength 2 The width of the object is in percentage of the maximum width

See also type().

Method Documentation

QTextLength.__init__ (self)

Constructs a new length object which represents a variable size.

QTextLength.__init__ (self, Type atype, float avalue)

Constructs a new length object of the given type and value.

QTextLength.__init__ (self, QVariant variant)

QTextLength.__init__ (self, QTextLength)

float QTextLength.rawValue (self)

Returns the constraint value that is specific for the type of the length. If the length is QTextLength.PercentageLength then the raw value is in percent, in the range of 0 to 100. If the length is QTextLength.FixedLength then that fixed amount is returned. For variable lengths, zero is returned.

Type QTextLength.type (self)

Returns the type of this length object.

See also QTextLength.Type.

float QTextLength.value (self, float maximumLength)

Returns the effective length, constrained by the type of the length object and the specified maximumLength.

See also type().

bool QTextLength.__eq__ (self, QTextLength other)

bool QTextLength.__ne__ (self, QTextLength other)

PyQt 4.9.4 for WindowsCopyright © Riverbank Computing Ltd and Nokia 2012Qt 4.8.2