def loadFromFile(self):
if self.sharedMemory.isAttached():
self.detach()
self.ui.label.setText(self.tr("Select an image file"))
fileName, _ = QFileDialog.getOpenFileName(
None, "", "", self.tr("Images (*.png *.xpm *.jpg)"))
image = QImage()
if not image.load(fileName):
self.ui.label.setText(
self.tr(
"Selected file is not an image, please select another."))
return
self.ui.label.setPixmap(QPixmap.fromImage(image))
buffer = QBuffer()
buffer.open(QBuffer.ReadWrite)
out = QDataStream(buffer)
out << image
size = buffer.size()
if not self.sharedMemory.create(size):
self.ui.label.setText(
self.tr("Unable to create shared memory segment."))
return
self.sharedMemory.lock()
size = min(self.sharedMemory.size(), size)
self.sharedMemory.data()[:size] = buffer.data()[:size]
self.sharedMemory.unlock()
def handleNetworkData(self, reply: QNetworkReply) -> None:
img = QImage()
tp = reply.request().attribute(QNetworkRequest.User)
if not reply.error():
if not img.load(reply, ""):
img = QImage()
reply.deleteLater()
self.m_tilePixmaps[QPointH(tp)] = (self.m_emptyTile if img.isNull()
else QPixmap.fromImage(img))
self.updated.emit(self.tileRect(tp))
# purge unused spaces
bound = self.m_tilesRect.adjusted(-2, -2, 2, 2)
self.m_tilePixmaps = {
tp: pixmap
for tp, pixmap in self.m_tilePixmaps.items() if bound.contains(tp)
}
self.download()