Pin image on desktop after spectacle screenshot. Works on Wayland.

pimg.py

#!/usr/bin/python3

import sys
import subprocess
from PySide6 import QtCore, QtWidgets, QtGui


class MyWidget(QtWidgets.QLabel):
    def __init__(self):
        super().__init__()
        self.window().setWindowFlag(QtCore.Qt.Window
                                    | QtCore.Qt.FramelessWindowHint
                                    | QtCore.Qt.WindowStaysOnTopHint)
        self.image: QtGui.QPixmap | None = None

    def load_image(self) -> None:
        clipboard = QtGui.QGuiApplication.clipboard()
        clipboard_image = clipboard.pixmap()
        if clipboard_image.isNull():
            self.close()
        self.image = clipboard_image
        self.dpr = self.window().devicePixelRatio()
        clipboard_image.setDevicePixelRatio(self.dpr)
        self.resize(int(clipboard_image.width() / self.dpr),
                    int(clipboard_image.height() / self.dpr))
        self.setPixmap(clipboard_image)

    def mouseDoubleClickEvent(self, _) -> None:
        self.close()

    def mouseMoveEvent(self, _):
        self.window().windowHandle().startSystemMove()

    def wheelEvent(self, event: QtGui.QWheelEvent) -> None:
        if event.angleDelta().y() > 0:
            clipboard_image = self.image.scaledToWidth(
                int(self.pixmap().width() * 1.1))
        elif event.angleDelta().y() < 0:
            clipboard_image = self.image.scaledToWidth(
                int(self.pixmap().width() / 1.1))
        self.resize(int(clipboard_image.width() / self.dpr),
                    int(clipboard_image.height() / self.dpr))
        self.setPixmap(clipboard_image)


def main():
    ret = subprocess.run(["spectacle", "--background",
                         "--region", "--copy-image", "--nonotify"])
    if ret.returncode != 0:
        return
    app = QtWidgets.QApplication([])
    widget = MyWidget()
    widget.show()
    widget.window().setWindowTitle("Pimg")
    QtCore.QTimer.singleShot(100, widget.load_image)
    sys.exit(app.exec())


main()