Promoting QLabel to a widget Window to show image

ZHLN

I'm using PySide6. currently i tried to promote QLabel to it's own class so that i can setPixmap an image to it, and also draw a ROI rectangle, because without custom promotion, the rectangle is drawn in the widget background as bacause the QLabel was obviously stacked on top of the container. but when i tried to pass image signal into some function and then show it, it won't show.. is there any help that i can work on with this?

here's the code in my AnotherWidget class to show the widget window, and function to pass the image into the LabelImage() function.

class AnotherWidget(QWidget, Ui_ROIWidget):

    def __init__(self):

        super().__init__()
        self.setupUi(self)
        self.setWindowTitle("Custom ROI selection")
        self.imgLabel = Labelimage()
        
    @Slot()
    def show_image(self,image):
        self.imgLabel.setImage(image)

and here's the code inside the Qlabel custom subclass.

from PySide6.QtWidgets import QLabel
from PySide6.QtGui import QImage, QPixmap, QPainter
from PySide6.QtCore import Qt, QRect

class Labelimage(QLabel):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.image = QPixmap()
        self.rect = QRect()

    def setImage(self, image_path):
        try:
            self.image.setPixmap(QPixmap.fromImage(image_path))
            self.update()
        except:
            return "error"

    def setRectangle(self, rect):
        self.rect = rect
        self.update()  # Trigger a repaint

    def paintEvent(self,event):
        super().paintEvent(event)
        painter = QPainter(self)
        try:
            if not self.image.isNull():
                scaled_pixmap = self.pixmap.scaled(self.size(), Qt.KeepAspectRatio, Qt.SmoothTransformation)
                painter.drawPixmap(self.rect(), scaled_pixmap, scaled_pixmap.rect())
        except:
            return "error"

the setImage() function won't show any image in the UI. it's the problem

jsulm

@ZHLN You did not put the label in any layout and you did not call show() on that label. You need to do one of these, else it will not be shown at all.