Synopsis¶

Methods¶

def __init__()
def rect()
def region()

Note

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Detailed Description¶

Paint events are sent to widgets that need to update themselves, for instance when part of a widget is exposed because a covering widget was moved.

The event contains a region() that needs to be updated, and a rect() that is the bounding rectangle of that region. Both are provided because many widgets cannot make much use of region() , and rect() can be much faster than region() .boundingRect().

Automatic Clipping¶

Painting is clipped to region() during the processing of a paint event. This clipping is performed by Qt’s paint system and is independent of any clipping that may be applied to a QPainter used to draw on the paint device.

As a result, the value returned by clipRegion() on a newly-constructed QPainter will not reflect the clip region that is used by the paint system.

See also

QPainter paintEvent()

__init__(arg__1)¶

Parameters:: arg__1 – QPaintEvent

__init__(paintRect)

Parameters:: paintRect – QRect

Constructs a paint event object with the rectangle that needs to be updated. The region is specified by paintRect.

__init__(paintRegion)

Parameters:: paintRegion – QRegion

Constructs a paint event object with the region that needs to be updated. The region is specified by paintRegion.

rect()¶

Return type:: QRect

Returns the rectangle that needs to be updated.

See also

region() setClipRect()

region()¶

Return type:: QRegion

Returns the region that needs to be updated.

See also

rect() setClipRegion()