QBitmap¶
Synopsis¶
Functions¶
def
clear
()def
swap
(other)def
transformed
(arg__1)def
transformed
(matrix)
Detailed Description¶
The
QBitmap
class is a monochrome off-screen paint device used mainly for creating customQCursor
andQBrush
objects, constructingQRegion
objects, and for setting masks for pixmaps and widgets.
QBitmap
is aQPixmap
subclass ensuring a depth of 1, except for null objects which have a depth of 0. If a pixmap with a depth greater than 1 is assigned to a bitmap, the bitmap will be dithered automatically.Use the
QColor
objectscolor0
andcolor1
when drawing on aQBitmap
object (or aQPixmap
object with depth 1).Painting with
color0
sets the bitmap bits to 0, and painting withcolor1
sets the bits to 1. For a bitmap, 0-bits indicate background (or transparent pixels) and 1-bits indicate foreground (or opaque pixels). Use theclear()
function to set all the bits tocolor0
. Note that using theblack
andwhite
colors make no sense because the QColor::pixel() value is not necessarily 0 for black and 1 for white.The
QBitmap
class provides thetransformed()
function returning a transformed copy of the bitmap; use theQTransform
argument to translate, scale, shear, and rotate the bitmap. In addition,QBitmap
provides the staticfromData()
function which returns a bitmap constructed from the givenuchar
data, and the staticfromImage()
function returning a converted copy of aQImage
object.Just like the
QPixmap
class,QBitmap
is optimized by the use of implicit data sharing. For more information, see the Implicit Data Sharing documentation.See also
-
class
QBitmap
¶ Constructs a null bitmap.
See also
Constructs a bitmap with the given
width
andheight
. The pixels inside are uninitialized.See also
-
PySide2.QtGui.QBitmap.
clear
()¶ Clears the bitmap, setting all its bits to
color0
.
-
static
PySide2.QtGui.QBitmap.
fromData
(size, bits[, monoFormat=QImage.Format_MonoLSB])¶ - Parameters
size –
QSize
bits –
uchar
monoFormat –
Format
- Return type
Constructs a bitmap with the given
size
, and sets the contents to thebits
supplied.The bitmap data has to be byte aligned and provided in in the bit order specified by
monoFormat
. The mono format must be eitherFormat_Mono
orFormat_MonoLSB
. UseFormat_Mono
to specify data on the XBM format.See also
fromImage()
-
PySide2.QtGui.QBitmap.
swap
(other)¶ - Parameters
other –
QBitmap
Swaps bitmap
other
with this bitmap. This operation is very fast and never fails.
-
PySide2.QtGui.QBitmap.
transformed
(matrix) - Parameters
matrix –
QTransform
- Return type
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