def on_actionOpen_triggered(self):
"""Open image file using registered reader classes."""
ftypes = {
ffilter: ftype
for ftype, ffilter in ReaderRegistry.filefilters()
}
fdialog = FileFilterDialog(self, "Open data files", "",
";;".join(ftypes.keys()))
if self._fileopen_filter:
fdialog.selectNameFilter(self._fileopen_filter)
if fdialog.exec_() == fdialog.Accepted:
self._fileopen_filter = fdialog.selectedNameFilter()
tag = ftypes[self._fileopen_filter]
files = fdialog.selectedFiles()
if files:
def _cacheFile(fn, tag):
uid = uuid4()
# setDataFromFile may raise an `NicosException`, e.g.
# if the file cannot be opened.
self.setDataFromFile(fn, tag, uid, display=False)
return self.add_to_flist(fn, None, tag, uid)
# load and display first item
f = files.pop(0)
self.fileList.setCurrentItem(_cacheFile(f, tag))
cachesize = self._cachesize - 1
# add first `cachesize` files to cache
for _, f in enumerateWithProgress(files[:cachesize],
"Loading data files...",
parent=fdialog):
_cacheFile(f, tag)
# add further files to file list (open on request/itemClicked)
for f in files[cachesize:]:
self.add_to_flist(f, None, tag)
def on_actionOpen_triggered(self):
"""Open image file using registered reader classes."""
ftypes = {
ffilter: ftype
for ftype, ffilter in ReaderRegistry.filefilters()
if not self._allowed_filetypes or ftype in self._allowed_filetypes
}
fdialog = FileFilterDialog(self, "Open data files", "",
";;".join(ftypes.keys()))
if self._fileopen_filter:
fdialog.selectNameFilter(self._fileopen_filter)
if fdialog.exec_() != fdialog.Accepted:
return
files = fdialog.selectedFiles()
if not files:
return
self._fileopen_filter = fdialog.selectedNameFilter()
filetype = ftypes[self._fileopen_filter]
errors = []
def _cacheFile(fn, filetype):
uid = uuid4()
# setDataFromFile may raise an `NicosException`, e.g.
# if the file cannot be opened.
try:
self.setDataFromFile(fn, filetype, uid, display=False)
except Exception as err:
errors.append('%s: %s' % (fn, err))
else:
return self.add_to_flist(fn, filetype, FILE, uid)
# load and display first item
f = files.pop(0)
item = _cacheFile(f, filetype)
if item is not None:
self.fileList.setCurrentItem(item)
cachesize = self._cachesize - 1
# add first `cachesize` files to cache
for _, f in enumerateWithProgress(files[:cachesize],
"Loading data files...",
parent=fdialog):
_cacheFile(f, filetype)
# add further files to file list (open on request/itemClicked)
for f in files[cachesize:]:
self.add_to_flist(f, filetype, FILE)
if errors:
self.showError('Some files could not be opened:\n\n' +
'\n'.join(errors))