created shadow widget can be used when app is working

pype/tools/standalonepublish/widgets/widget_shadow.py

@@ -0,0 +1,40 @@
+from . import QtWidgets, QtCore, QtGui
+
+
+class ShadowWidget(QtWidgets.QWidget):
+    def __init__(self, parent):
+        self.parent_widget = parent
+        super().__init__(parent)
+        w = self.parent_widget.frameGeometry().width()
+        h = self.parent_widget.frameGeometry().height()
+        self.resize(QtCore.QSize(w, h))
+        palette = QtGui.QPalette(self.palette())
+        palette.setColor(palette.Background, QtCore.Qt.transparent)
+        self.setPalette(palette)
+        self.message = ''
+
+        font = QtGui.QFont()
+        font.setFamily("DejaVu Sans Condensed")
+        font.setPointSize(40)
+        font.setBold(True)
+        font.setWeight(50)
+        font.setKerning(True)
+        self.font = font
+
+    def paintEvent(self, event):
+        painter = QtGui.QPainter()
+        painter.begin(self)
+        painter.setFont(self.font)
+        painter.setRenderHint(QtGui.QPainter.Antialiasing)
+        painter.fillRect(event.rect(), QtGui.QBrush(QtGui.QColor(0, 0, 0, 127)))
+        painter.drawText(
+            QtCore.QRectF(
+                0.0,
+                0.0,
+                self.parent_widget.frameGeometry().width(),
+                self.parent_widget.frameGeometry().height()
+            ),
+            QtCore.Qt.AlignCenter|QtCore.Qt.AlignCenter,
+            self.message
+        )
+        painter.end()