QSizeF¶

The QSizeF class defines the size of a two-dimensional object using floating point precision. More…

Synopsis¶

Functions¶

def __add__ (, s2)
def __div__ (, c)
def __eq__ (, s2)
def __iadd__ (arg__1)
def __idiv__ (c)
def __imul__ (c)
def __isub__ (arg__1)
def __mul__ (, c)
def __mul__ (c)
def __ne__ (, s2)
def __reduce__ ()
def __repr__ ()
def __sub__ (, s2)
def boundedTo (arg__1)
def expandedTo (arg__1)
def height ()
def isEmpty ()
def isNull ()
def isValid ()
def scale (s, mode)
def scale (w, h, mode)
def scaled (s, mode)
def scaled (w, h, mode)
def setHeight (h)
def setWidth (w)
def toSize ()
def toTuple ()
def transpose ()
def transposed ()
def width ()

Detailed Description¶

A size is specified by a width() and a height() . It can be set in the constructor and changed using the setWidth() , setHeight() , or scale() functions, or using arithmetic operators. A size can also be manipulated directly by retrieving references to the width and height using the rwidth() and rheight() functions. Finally, the width and height can be swapped using the transpose() function.

The isValid() function determines if a size is valid. A valid size has both width and height greater than or equal to zero. The isEmpty() function returns true if either of the width and height is less than (or equal to) zero, while the isNull() function returns true only if both the width and the height is zero.

Use the expandedTo() function to retrieve a size which holds the maximum height and width of this size and a given size. Similarly, the boundedTo() function returns a size which holds the minimum height and width of this size and a given size.

The QSizeF class also provides the toSize() function returning a QSize copy of this size, constructed by rounding the width and height to the nearest integers.

QSizeF objects can be streamed as well as compared.

See also

QSize QPointF QRectF

class QSizeF¶

QSizeF(sz)

QSizeF(QSizeF)

QSizeF(w, h)

param w

qreal

param h

qreal

param QSizeF

QSizeF

param sz

QSize

Constructs an invalid size.

See also

isValid()

Constructs a size with floating point accuracy from the given size .

See also

toSize()

Constructs a size with the given width and height .

PySide2.QtCore.QSizeF.__reduce__()¶

Return type: PyObject

PySide2.QtCore.QSizeF.__repr__()¶

Return type: PyObject

PySide2.QtCore.QSizeF.boundedTo(arg__1)¶

Parameters: arg__1 – QSizeF
Return type: QSizeF

Returns a size holding the minimum width and height of this size and the given otherSize .

See also

expandedTo() scale()

PySide2.QtCore.QSizeF.expandedTo(arg__1)¶

Parameters: arg__1 – QSizeF
Return type: QSizeF

Returns a size holding the maximum width and height of this size and the given otherSize .

See also

boundedTo() scale()

PySide2.QtCore.QSizeF.height()¶

Return type: qreal

Returns the height.

See also

width() setHeight()

PySide2.QtCore.QSizeF.isEmpty()¶

Return type: bool

Returns true if either of the width and height is less than or equal to 0; otherwise returns false .

See also

isNull() isValid()

PySide2.QtCore.QSizeF.isNull()¶

Return type: bool

Returns true if both the width and height are 0.0 (ignoring the sign); otherwise returns false .

See also

isValid() isEmpty()

PySide2.QtCore.QSizeF.isValid()¶

Return type: bool

Returns true if both the width and height is equal to or greater than 0; otherwise returns false .

See also

isNull() isEmpty()

PySide2.QtCore.QSizeF.__ne__(s2)¶

Parameters: s2 – QSizeF
Return type: bool

PySide2.QtCore.QSizeF.__mul__(c)¶

Parameters: c – qreal
Return type: QSizeF

PySide2.QtCore.QSizeF.__mul__(c)

Parameters: c – qreal
Return type: QSizeF

PySide2.QtCore.QSizeF.__imul__(c)¶

Parameters: c – qreal
Return type: QSizeF

This is an overloaded function.

Multiplies both the width and height by the given factor and returns a reference to the size.

See also

scale()

PySide2.QtCore.QSizeF.__add__(s2)¶

Parameters: s2 – QSizeF
Return type: QSizeF

PySide2.QtCore.QSizeF.__iadd__(arg__1)¶

Parameters: arg__1 – QSizeF
Return type: QSizeF

Adds the given size to this size and returns a reference to this size. For example:

s = QSizeF( 3, 7)
r = QSizeF(-1, 4)
s += r

# s becomes (2,11)

PySide2.QtCore.QSizeF.__sub__(s2)¶

Parameters: s2 – QSizeF
Return type: QSizeF

PySide2.QtCore.QSizeF.__isub__(arg__1)¶

Parameters: arg__1 – QSizeF
Return type: QSizeF

Subtracts the given size from this size and returns a reference to this size. For example:

s = QSizeF( 3, 7)
r = QSizeF(-1, 4)
s -= r

# s becomes (4,3)

PySide2.QtCore.QSizeF.__div__(c)¶

Parameters: c – qreal
Return type: QSizeF

PySide2.QtCore.QSizeF.__idiv__(c)¶

Parameters: c – qreal
Return type: QSizeF

This is an overloaded function.

Divides both the width and height by the given divisor and returns a reference to the size.

See also

scale()

PySide2.QtCore.QSizeF.__eq__(s2)¶

Parameters: s2 – QSizeF
Return type: bool

PySide2.QtCore.QSizeF.scale(s, mode)¶

Parameters

s – QSizeF
mode – AspectRatioMode

This is an overloaded function.

Scales the size to a rectangle with the given size , according to the specified mode .

PySide2.QtCore.QSizeF.scale(w, h, mode)

Parameters

w – qreal
h – qreal
mode – AspectRatioMode

Scales the size to a rectangle with the given width and height , according to the specified mode .

If mode is IgnoreAspectRatio , the size is set to (width, height).
If mode is KeepAspectRatio , the current size is scaled to a rectangle as large as possible inside (width, height), preserving the aspect ratio.
If mode is KeepAspectRatioByExpanding , the current size is scaled to a rectangle as small as possible outside (width, height), preserving the aspect ratio.

Example:

t1 = QSizeF(10, 12)
t1.scale(60, 60, Qt.IgnoreAspectRatio)
# t1 is (60, 60)

t2 = QSizeF(10, 12)
t2.scale(60, 60, Qt.KeepAspectRatio)
# t2 is (50, 60)

t3 = QSizeF(10, 12)
t3.scale(60, 60, Qt.KeepAspectRatioByExpanding)
# t3 is (60, 72)

See also

setWidth() setHeight() scaled()

PySide2.QtCore.QSizeF.scaled(s, mode)¶

Parameters

s – QSizeF
mode – AspectRatioMode

Return type

QSizeF

This is an overloaded function.

Returns a size scaled to a rectangle with the given size s , according to the specified mode .

PySide2.QtCore.QSizeF.scaled(w, h, mode)

Parameters

w – qreal
h – qreal
mode – AspectRatioMode

Return type

QSizeF

Returns a size scaled to a rectangle with the given width and height , according to the specified mode .

See also

scale()

PySide2.QtCore.QSizeF.setHeight(h)¶

Parameters: h – qreal

Sets the height to the given height .

See also

height() rheight() setWidth()

PySide2.QtCore.QSizeF.setWidth(w)¶

Parameters: w – qreal

Sets the width to the given width .

See also

width() rwidth() setHeight()

PySide2.QtCore.QSizeF.toSize()¶

Return type: QSize

Returns an integer based copy of this size.

Note that the coordinates in the returned size will be rounded to the nearest integer.

See also

QSizeF()

PySide2.QtCore.QSizeF.toTuple()¶

Return type: PyObject

PySide2.QtCore.QSizeF.transpose()¶: Swaps the width and height values.

See also

setWidth() setHeight() transposed()

PySide2.QtCore.QSizeF.transposed()¶

Return type: QSizeF

Returns the size with width and height values swapped.

See also

transpose()

PySide2.QtCore.QSizeF.width()¶

Return type: qreal

Returns the width.

See also

height() setWidth()

Qt Documentation

Table of Contents

QSizeF¶

Synopsis¶

Functions¶

Detailed Description¶