def split_full_desktop_to_screens(
full_image: QtGui.QImage) -> list[QtGui.QImage]:
"""Split full desktop image into list of images per screen.
Also resizes screens according to image:virtual-geometry ratio.
"""
virtual_geometry = QtWidgets.QApplication.primaryScreen().virtualGeometry()
ratio = full_image.rect().width() / virtual_geometry.width()
logger.debug("Virtual geometry width: %s", virtual_geometry.width())
logger.debug("Image width: %s", full_image.rect().width())
logger.debug("Resize ratio: %s", ratio)
images = []
for screen in QtWidgets.QApplication.screens():
geo = screen.geometry()
region = QtCore.QRect(
int(geo.x() * ratio),
int(geo.y() * ratio),
int(geo.width() * ratio),
int(geo.height() * ratio),
)
image = full_image.copy(region)
images.append(image)
return images
def decodeQR(self, qr_image: QImage):
cropped = qr_image.copy(
self.calculate_center_square(qr_image).toRect())
# TODO: the same code is present in slips.py -> move to one place
buffer = QBuffer()
buffer.open(QBuffer.ReadWrite)
cropped.save(buffer, "BMP")
try:
pillow_image = Image.open(io.BytesIO(buffer.data()))
except UnidentifiedImageError:
print("Image format isn't supported")
return
barcodes = pyzbar.decode(pillow_image,
symbols=[pyzbar.ZBarSymbol.QRCODE])
if barcodes:
self.decodedQR.emit(barcodes[0].data.decode('utf-8'))