QSizeF ¶

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

概要 ¶

函数 ¶

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 grownBy (m)
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 shrunkBy (m)
def toSize ()
def toTuple ()
def transpose ()
def transposed ()
def width ()

详细描述 ¶

A size is specified by a width() 和 height() . It can be set in the constructor and changed using the setWidth() , setHeight() ，或 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() 函数。

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.

使用 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.

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.

另请参阅

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.

另请参阅

isValid()

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

另请参阅

toSize()

构造尺寸，采用给定 width and height .

PySide2.QtCore.QSizeF. __reduce__ ( ) ¶

返回类型: PyObject

PySide2.QtCore.QSizeF. __repr__ ( ) ¶

返回类型: PyObject

PySide2.QtCore.QSizeF. boundedTo ( arg__1 ) ¶

参数: arg__1 – QSizeF
返回类型: QSizeF

返回尺寸，该尺寸保持最小宽度高度，及给定 otherSize .

另请参阅

expandedTo() scale()

PySide2.QtCore.QSizeF. expandedTo ( arg__1 ) ¶

参数: arg__1 – QSizeF
返回类型: QSizeF

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

另请参阅

boundedTo() scale()

PySide2.QtCore.QSizeF. grownBy ( m ) ¶

参数: m – QMarginsF
返回类型: QSizeF

PySide2.QtCore.QSizeF. height ( ) ¶

返回类型: qreal

返回高度。

另请参阅

width() setHeight()

PySide2.QtCore.QSizeF. isEmpty ( ) ¶

返回类型: bool

返回 true 若宽度和高度两者任一 <= 0；否则返回 false .

另请参阅

isNull() isValid()

PySide2.QtCore.QSizeF. isNull ( ) ¶

返回类型: bool

返回 true 若宽度和高度两者为 0.0 (忽略正负号)；否则返回 false .

另请参阅

isValid() isEmpty()

PySide2.QtCore.QSizeF. isValid ( ) ¶

返回类型: bool

返回 true 若宽度和高度两者 >= 0；否则返回 false .

另请参阅

isNull() isEmpty()

PySide2.QtCore.QSizeF. __ne__ ( s2 ) ¶

参数: s2 – QSizeF
返回类型: bool

PySide2.QtCore.QSizeF. __mul__ ( c ) ¶

参数: c – qreal
返回类型: QSizeF

PySide2.QtCore.QSizeF. __mul__ ( c ) ¶

参数: c – qreal
返回类型: QSizeF

PySide2.QtCore.QSizeF. __imul__ ( c ) ¶

参数: c – qreal
返回类型: QSizeF

这是重载函数。

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

另请参阅

scale()

PySide2.QtCore.QSizeF. __add__ ( s2 ) ¶

参数: s2 – QSizeF
返回类型: QSizeF

PySide2.QtCore.QSizeF. __iadd__ ( arg__1 ) ¶

参数: arg__1 – QSizeF
返回类型: QSizeF

添加给定 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 ) ¶

参数: s2 – QSizeF
返回类型: QSizeF

PySide2.QtCore.QSizeF. __isub__ ( arg__1 ) ¶

参数: arg__1 – QSizeF
返回类型: 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 ) ¶

参数: c – qreal
返回类型: QSizeF

PySide2.QtCore.QSizeF. __idiv__ ( c ) ¶

参数: c – qreal
返回类型: QSizeF

这是重载函数。

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

另请参阅

scale()

PySide2.QtCore.QSizeF. __eq__ ( s2 ) ¶

参数: s2 – QSizeF
返回类型: bool

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

参数

s – QSizeF
mode – AspectRatioMode

这是重载函数。

把尺寸比例缩放到矩形采用给定 size ，根据指定 mode .

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

参数

w – qreal
h – qreal
mode – AspectRatioMode

把尺寸比例缩放到矩形采用给定 width and height ，根据指定 mode .

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

范例：

											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)
											
										

另请参阅

setWidth() setHeight() scaled()

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

参数

w – qreal
h – qreal
mode – AspectRatioMode

返回类型

QSizeF

Returns a size scaled to a rectangle with the given width and height ，根据指定 mode .

另请参阅

scale()

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

参数

s – QSizeF
mode – AspectRatioMode

返回类型

QSizeF

这是重载函数。

Returns a size scaled to a rectangle with the given size s ，根据指定 mode .

PySide2.QtCore.QSizeF. setHeight ( h ) ¶

参数: h – qreal

Sets the height to the given height .

另请参阅

height() rheight() setWidth()

PySide2.QtCore.QSizeF. setWidth ( w ) ¶

参数: w – qreal

Sets the width to the given width .

另请参阅

width() rwidth() setHeight()

PySide2.QtCore.QSizeF. shrunkBy ( m ) ¶

参数: m – QMarginsF
返回类型: QSizeF

PySide2.QtCore.QSizeF. toSize ( ) ¶

返回类型: QSize

Returns an integer based copy of this size.

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

另请参阅

QSizeF()

PySide2.QtCore.QSizeF. toTuple ( ) ¶

返回类型: PyObject

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

另请参阅

setWidth() setHeight() transposed()

PySide2.QtCore.QSizeF. transposed ( ) ¶

返回类型: QSizeF

Returns the size with width and height values swapped.

另请参阅

transpose()

PySide2.QtCore.QSizeF. width ( ) ¶

返回类型: qreal

返回宽度。

另请参阅

height() setWidth()

内容表

上一话题

下一话题

快速搜索

QSizeF ¶

概要 ¶

函数 ¶

详细描述 ¶