Can't add a stretched background image with PyQt5

Trunks10

Hi,

I've been struggling with this for the last 3 days... I would like to simply add a stretched background image to my parent QWidget. I literally tried a dozens of times after searching everywhere but I'm still stuck with this issue. I don't use resources (from qt designer). PSB :

from PyQt5 import QtCore, QtWidgets, QtGui
import sys

class Ui_Form(QtWidgets.QWidget):

def __init__(self):
    QtWidgets.QWidget.__init__(self)
    self.setupUi(self) 

def setupUi(self, Form):
    Form.setObjectName("Form")
    Form.resize(860, 619)
    Form.setStyleSheet("QWidget#Form {border-image: url(space.png) 0 0 0 0 stretch stretch;}")

And it does not work. But when I execute this:

        Form.setStyleSheet("border-image: url(space.png) 0 0 0 0 stretch stretch;")

All Qwidget's children get the background which is obviously not what I want. But it proves at least that there is no problem with the resource itself.

I've tried to make it work via Qpalette() and it works better but I don't know how to make the background image stretched =/ :

    image = QtGui.QImage("space.png")
    palette = QtGui.QPalette()
    palette.setBrush(10, QtGui.QBrush(image))     
     
    Form.setPalette(palette)

Any idea ?

mrjj

HI and welcome
Maybe you can "cheat" and use a QLabel ?
http://stackoverflow.com/questions/10915215/pyqt-qt-how-to-stretch-an-image-in-qlabel-widget

self.label.setScaledContents(true);

also as a note:
Form.setStyleSheet("borde xxx
have no type selector ("QWidget#..")
so it applies to all childs of the form.
"QMainwndow#" would target the form
http://doc.qt.io/qt-5/stylesheet-examples.html

Trunks10

Thanks for your reply, you gave me some inspiration.
I took a look at "Qt Style Sheets Examples" and I could not find how to customize a QWidget so I simply convert my QWidget to a QMainWindow. I got rid of the menu bar and the status bar because I don't need them... everything works fine now with QMainWindow :)

`class Ui_MainWindow(QtWidgets.QMainWindow):

def __init__(self):
    super().__init__()       
    self.setupUi(self)

def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(856, 610)
    MainWindow.setStyleSheet("#MainWindow { border-image: url(space.png) 0 0 0 0 stretch stretch; }")
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")`

mrjj

super :)
also using "#MainWindow" makes sure it dont apply to childs as stylesheets does.