寫了一個感覺有些用的小玩具。
用于給控件添加陰影遮罩(強調主控件的同時屏蔽其余控件的點擊)

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自定義陰影遮罩Mask：

from PyQt5.QtCore import QPoint,QRect,Qt,QPoint,QSize
from PyQt5.QtWidgets import QWidget,QLabel,QPushButton,QVBoxLayout
from PyQt5.QtGui import QColor,QPainter,QBitmapclass Mask(QWidget):__exclude=None__color=Nonedef __init__(self,parent=None,*exclude,color=QColor(0,0,0,128)):super().__init__(parent)self.__exclude=set(exclude)self.__color=colorself.show()def paintEvent(self,event):self.resize(self.parent().size())bit=QBitmap(self.size())bit.fill(Qt.black)painter_bit=QPainter(bit)for wid,offset in self.__Get_Offset().items():painter_bit.eraseRect(QRect(offset,wid.size()))painter_bit.end()painter_self=QPainter(self)painter_self.fillRect(0,0,self.size().width(),self.size().height(),self.__color)painter_self.end()self.setMask(bit)def __Get_Offset(self):record={}parent_self=self.parent()for widget in self.__exclude:if(not widget.isVisible()):continuewid=widgetparent_wid=wid.parent()offset=QPoint(0,0)while (True):offset+=wid.pos()if(not parent_wid):breakif(parent_wid==parent_self):breakwid=wid.parent()parent_wid=wid.parent()if(parent_wid):record[widget]=offsetreturn record

測試代碼+運行結果：

import sys
from PyQt5.QtWidgets import QApplication
if __name__=='__main__':app = QApplication(sys.argv)lb_1=QPushButton("ABCDE")lb_1.setStyleSheet("font-size:150px ; background-color:#FFFF00")lb_2=QPushButton("PQRST")lb_2.setStyleSheet("font-size:150px ; background-color:#FF0000")lb_3=QPushButton("XYZ",lb_2)lb_3.setStyleSheet("font-size:50px ; background-color:#00FFFF")win=QWidget()vbox=QVBoxLayout(win)vbox.addWidget(lb_1)vbox.addStretch(1)vbox.addWidget(lb_2)win.show()win.resize(800,400)# msk=Mask(win,lb_1,color=QColor(0,0,0,192))# msk=Mask(win,lb_1,lb_2,color=QColor(0,0,0,192))msk=Mask(win,lb_1,lb_3,color=QColor(0,0,0,192))# msk=Mask(lb_2,lb_1,lb_3,color=QColor(0,0,0,192))# msk.setParent(None)sys.exit(app.exec())

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說明：

1. 即用即貼
2. 這個Mask是個牛皮癬(因為設置了parent)，執行語句msk.setParent(None)以刪除遮罩
3. 遮罩是規則的矩形。奇形怪狀的需要自己額外修改代碼實現

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未經個人同意不得私自轉載。本文發布于CSDN：https://blog.csdn.net/weixin_44733774/article/details/134587980