QGraphicsRectItem ¶

概要 ¶

详细描述 ¶

PySide.QtGui.QGraphicsRectItem class provides a rectangle item that you can add to a PySide.QtGui.QGraphicsScene .

要设置项的矩形，传递 PySide.QtCore.QRectF to PySide.QtGui.QGraphicsRectItem ‘s constructor, or call the PySide.QtGui.QGraphicsRectItem.setRect() function. The PySide.QtGui.QGraphicsRectItem.rect() function returns the current rectangle.

PySide.QtGui.QGraphicsRectItem uses the rectangle and the pen width to provide a reasonable implementation of PySide.QtGui.QGraphicsRectItem.boundingRect() , PySide.QtGui.QGraphicsRectItem.shape() ，和 PySide.QtGui.QGraphicsRectItem.contains() 。 PySide.QtGui.QGraphicsRectItem.paint() function draws the rectangle using the item's associated pen and brush, which you can set by calling the PySide.QtGui.QAbstractGraphicsShapeItem.setPen() and PySide.QtGui.QAbstractGraphicsShapeItem.setBrush() 函数。

注意

The rendering of invalid rectangles, such as those with negative widths or heights, is undefined. If you cannot be sure that you are using valid rectangles (for example, if you are creating rectangles using data from an unreliable source) then you should use QRectF.normalized() to create normalized rectangles, and use those instead.

另请参阅

PySide.QtGui.QGraphicsPathItem PySide.QtGui.QGraphicsEllipseItem PySide.QtGui.QGraphicsPolygonItem PySide.QtGui.QGraphicsTextItem PySide.QtGui.QGraphicsLineItem PySide.QtGui.QGraphicsPixmapItem 图形视图框架

class PySide.QtGui. QGraphicsRectItem ( [ parent=None [ , scene=None ] ] ) ¶

class PySide.QtGui. QGraphicsRectItem ( rect [ , parent=None [ , scene=None ] ] )

class PySide.QtGui. QGraphicsRectItem ( x , y , w , h [ , parent=None [ , scene=None ] ] )

参数：	w – PySide.QtCore.qreal x – PySide.QtCore.qreal y – PySide.QtCore.qreal h – PySide.QtCore.qreal rect – PySide.QtCore.QRectF scene – PySide.QtGui.QGraphicsScene parent – PySide.QtGui.QGraphicsItem

PySide.QtGui.QGraphicsRectItem. rect ( ) ¶

返回类型：	PySide.QtCore.QRectF

Returns the item's rectangle.

另请参阅

PySide.QtGui.QGraphicsRectItem.setRect()

PySide.QtGui.QGraphicsRectItem. setRect ( rect ) ¶

参数：	rect – PySide.QtCore.QRectF

Sets the item's rectangle to be the given rectangle .

另请参阅

PySide.QtGui.QGraphicsRectItem.rect()

PySide.QtGui.QGraphicsRectItem. setRect ( x , y , w , h )

参数：	x – PySide.QtCore.qreal y – PySide.QtCore.qreal w – PySide.QtCore.qreal h – PySide.QtCore.qreal

Sets the item's rectangle to the rectangle defined by ( x , y ) and the given width and height .

This convenience function is equivalent to calling setRect(QRectF(x, y, width, height))

另请参阅

PySide.QtGui.QGraphicsRectItem.rect()