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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""
This module contains utilitaries used by other dialog modules.
"""
__authors__ = ["V. Valls"]
__license__ = "MIT"
__date__ = "17/01/2019"
import fabio
import silx.io
from silx.gui import qt
class Codec(object):
def __init__(self, any_fabio=False, any_silx=False, fabio_codec=None, auto=False):
self.__any_fabio = any_fabio
self.__any_silx = any_silx
self.fabio_codec = fabio_codec
self.__auto = auto
def is_autodetect(self):
return self.__auto
def is_fabio_codec(self):
return self.__any_fabio or self.fabio_codec is not None
def is_silx_codec(self):
return self.__any_silx
class FileTypeComboBox(qt.QComboBox):
"""
A combobox providing all image file formats supported by fabio and silx.
It provides access for each fabio codecs individually.
"""
EXTENSIONS_ROLE = qt.Qt.UserRole + 1
CODEC_ROLE = qt.Qt.UserRole + 2
INDENTATION = u"\u2022 "
def __init__(self, parent=None):
qt.QComboBox.__init__(self, parent)
self.__fabioUrlSupported = True
self.__initItems()
def setFabioUrlSupproted(self, isSupported):
if self.__fabioUrlSupported == isSupported:
return
self.__fabioUrlSupported = isSupported
self.__initItems()
def __initItems(self):
self.clear()
if self.__fabioUrlSupported:
self.__insertFabioFormats()
self.__insertSilxFormats()
self.__insertAllSupported()
self.__insertAnyFiles()
def __insertAnyFiles(self):
index = self.count()
self.addItem("All files (*)")
self.setItemData(index, ["*"], role=self.EXTENSIONS_ROLE)
self.setItemData(index, Codec(auto=True), role=self.CODEC_ROLE)
def __insertAllSupported(self):
allExtensions = set([])
for index in range(self.count()):
ext = self.itemExtensions(index)
allExtensions.update(ext)
allExtensions = allExtensions - set("*")
list(sorted(list(allExtensions)))
index = 0
self.insertItem(index, "All supported files")
self.setItemData(index, allExtensions, role=self.EXTENSIONS_ROLE)
self.setItemData(index, Codec(auto=True), role=self.CODEC_ROLE)
def __insertSilxFormats(self):
formats = silx.io.supported_extensions()
extensions = []
allExtensions = set([])
for description, ext in formats.items():
allExtensions.update(ext)
if ext == []:
ext = ["*"]
extensions.append((description, ext, "silx"))
extensions = list(sorted(extensions))
allExtensions = list(sorted(list(allExtensions)))
index = self.count()
self.addItem("All supported files, using Silx")
self.setItemData(index, allExtensions, role=self.EXTENSIONS_ROLE)
self.setItemData(index, Codec(any_silx=True), role=self.CODEC_ROLE)
for e in extensions:
index = self.count()
if len(e[1]) < 10:
self.addItem("%s%s (%s)" % (self.INDENTATION, e[0], " ".join(e[1])))
else:
self.addItem("%s%s" % (self.INDENTATION, e[0]))
codec = Codec(any_silx=True)
self.setItemData(index, e[1], role=self.EXTENSIONS_ROLE)
self.setItemData(index, codec, role=self.CODEC_ROLE)
def __insertFabioFormats(self):
formats = fabio.fabioformats.get_classes(reader=True)
from fabio import fabioutils
if hasattr(fabioutils, "COMPRESSED_EXTENSIONS"):
compressedExtensions = fabioutils.COMPRESSED_EXTENSIONS
else:
# Support for fabio < 0.9
compressedExtensions = set(["gz", "bz2"])
extensions = []
allExtensions = set([])
def extensionsIterator(reader):
for extension in reader.DEFAULT_EXTENSIONS:
yield "*.%s" % extension
for compressedExtension in compressedExtensions:
for extension in reader.DEFAULT_EXTENSIONS:
yield "*.%s.%s" % (extension, compressedExtension)
for reader in formats:
if not hasattr(reader, "DESCRIPTION"):
continue
if not hasattr(reader, "DEFAULT_EXTENSIONS"):
continue
displayext = reader.DEFAULT_EXTENSIONS
displayext = ["*.%s" % e for e in displayext]
ext = list(extensionsIterator(reader))
allExtensions.update(ext)
if ext == []:
ext = ["*"]
extensions.append((reader.DESCRIPTION, displayext, ext, reader.codec_name()))
extensions = list(sorted(extensions))
allExtensions = list(sorted(list(allExtensions)))
index = self.count()
self.addItem("All supported files, using Fabio")
self.setItemData(index, allExtensions, role=self.EXTENSIONS_ROLE)
self.setItemData(index, Codec(any_fabio=True), role=self.CODEC_ROLE)
for e in extensions:
description, displayExt, allExt, _codecName = e
index = self.count()
if len(e[1]) < 10:
self.addItem("%s%s (%s)" % (self.INDENTATION, description, " ".join(displayExt)))
else:
self.addItem("%s%s" % (self.INDENTATION, description))
codec = Codec(fabio_codec=_codecName)
self.setItemData(index, allExt, role=self.EXTENSIONS_ROLE)
self.setItemData(index, codec, role=self.CODEC_ROLE)
def itemExtensions(self, index):
"""Returns the extensions associated to an index."""
result = self.itemData(index, self.EXTENSIONS_ROLE)
if result is None:
result = None
return result
def currentExtensions(self):
"""Returns the current selected extensions."""
index = self.currentIndex()
return self.itemExtensions(index)
def indexFromCodec(self, codecName):
for i in range(self.count()):
codec = self.itemCodec(i)
if codecName == "auto":
if codec.is_autodetect():
return i
elif codecName == "silx":
if codec.is_silx_codec():
return i
elif codecName == "fabio":
if codec.is_fabio_codec() and codec.fabio_codec is None:
return i
elif codecName == codec.fabio_codec:
return i
return -1
def itemCodec(self, index):
"""Returns the codec associated to an index."""
result = self.itemData(index, self.CODEC_ROLE)
if result is None:
result = None
return result
def currentCodec(self):
"""Returns the current selected codec. None if nothing selected
or if the item is not a codec"""
index = self.currentIndex()
return self.itemCodec(index)
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