Resizing QDialog after removing QWidget - python-3.x

Question

Is there any way by which I can resize a QDialog after removing a QWidget from its layout?
I'm still a beginner so bear with me if the code looks a bit silly.
The main dialog geometry is stored during the resizeEvent()
Before creating the widget:
https://imgur.com/a/vFORp4t
When the widget is created:
https://imgur.com/z7KUa3I
When the widget is removed:
https://imgur.com/KdzULUe
def resizeEvent(self, event):
QtWidgets.QMainWindow.resizeEvent(self, event)
window = self.window()
self.dialog_rect = window.geometry()
self.DialogSizeChanged.emit() # pylint: disable=E1101
Here's the "create widget" code:
def create_info_widget(self):
px = self.dialog_rect.x()
py = self.dialog_rect.y()
w = self.dialog_rect.width()
h = self.dialog_rect.height()
self.dialog_stored_rect = self.dialog_rect
self.info_wdg = abw.ThumbnailInfo("Asset Info")
self.asset_wdg_layout.addWidget(self.info_wdg)
data = self.list_wdg.get_list_thumbnails_data()
path = data['thumbnail']
self.info_wdg.set_info_thumbnail(path)
wdg_h = self.info_wdg.height()
self.setGeometry(px, py, w, h + wdg_h)
self.updateGeometry()
And the "remove widget" code:
def remove_info_widget(self):
wdg = self.findChild(QtWidgets.QFrame, "Asset Info")
if wdg:
self.asset_wdg_layout.removeWidget(wdg)
wdg.deleteLater()
self.info_wdg = None
self.setGeometry(self.dialog_stored_rect)
self.updateGeometry()
As shown on grabbed images, when the widget is removed, it doesn't get back to its size before it was created.
Thank you,
Jacques.

Answer 1

We will first resize it and then use adjustSize to let QApplication know.
We are using resize for just resizing, not for fixed values
Make sure not to apply this when maximized
from PySide2.QtWidgets import (
QApplication,
QPushButton,
QWidget,
QVBoxLayout
)
class Test(QWidget):
def __init__(self):
super().__init__()
self.setLayout(QVBoxLayout(self))
self.add = QPushButton(self, text="Toggle")
self.added = QPushButton(self, text="Hello There")
self.added.setMinimumHeight(600)
self.added.setVisible(False)
self.layout().addWidget(self.add)
self.layout().addWidget(self.added)
self.add.clicked.connect(
lambda: self.added.setVisible(not self.added.isVisible())
)
self.add.clicked.connect(self.toggle)
# trick is to use resize and self.adjustSize
def toggle(self):
if self.isMaximized():
return ...
self.resize(self.width(), 600 if self.added.isVisible() else 100)
self.adjustSize()
sample = QApplication([])
test = Test()
test.show()
sample.exec_()