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# cbf_tkfiledialog.py
#
# wrapper for tkfiledialog.py modified to
# read or write a cbf
#
# copyright (c) 2011 Herbert J. Bernstein
#
# for incorporation into the CBFlib package API
#
######################################################################
# #
# YOU MAY REDISTRIBUTE THE CBFLIB PACKAGE UNDER THE TERMS OF THE GPL #
# #
# ALTERNATIVELY YOU MAY REDISTRIBUTE THE CBFLIB API UNDER THE TERMS #
# OF THE LGPL #
# #
######################################################################
########################### GPL NOTICES ##############################
# #
# This program is free software; you can redistribute it and/or #
# modify it under the terms of the GNU General Public License as #
# published by the Free Software Foundation; either version 2 of #
# (the License, or (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA #
# 02111-1307 USA #
# #
######################################################################
######################### LGPL NOTICES ###############################
# #
# This library is free software; you can redistribute it and/or #
# modify it under the terms of the GNU Lesser General Public #
# License as published by the Free Software Foundation; either #
# version 2.1 of the License, or (at your option) any later version. #
# #
# This library is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU #
# Lesser General Public License for more details. #
# #
# You should have received a copy of the GNU Lesser General Public #
# License along with this library; if not, write to the Free #
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, #
# MA 02110-1301 USA #
# #
######################################################################
import pycbf
try:
import Tkinter as TKINTER
import tkFileDialog as TKFILEDIALOG
except ImportError:
import tkinter as TKINTER
import tkinter.filedialog as TKFILEDIALOG
import thread
import time
parent = None
def dummyparent(x,y):
global parent
parent = TKINTER.Tk()
width = parent.winfo_screenwidth()
height = parent.winfo_screenheight()
parent.geometry("%dx%d+%d+%d" % (width,height,x,y))
parent.withdraw()
parent.mainloop()
def save_cbf(cbf = None, file_extensions=None, x=100, y=100, title="Save CBF", maxfiles=20, \
mode="wide", flags=pycbf.MSG_DIGEST, encoding=0, root=None):
"""
cbf_tkfiledialog.save_cbf
Use an askopenfilename dialog box to write an existing
cbf into the specified file. An exception is raised
if the cbf is None and None is returned. If the write
is successful, the cbf is returned.
file_extensions is either None, to use the default list
of extensions ["*.cbf", "*.cif", "*.dic", "*.txt", "*.*"],
or a specific list of extensions to use. The actual
extension chosen determines whether a CBF or CIF is written.
(x,y) are for compatibility with the vpython version of
this call. In this TK version, they are only used
as top left corner offsets for a dummy root window if
none is specified.
title is the dialog box title.
maxfiles is for compatibility with the vpython version of
this call and is not used in this TK version.
mode is either "wide" or "narrow" to specify writing 2048
character line length files or 80 character line length
files
flags is the bit-wise or of any flags needed for the
read. The default is pycbf.MSG_DIGEST
encoding is the bit-wise or of any encoding flags to
be used for writing binary sections.
root is the parent window for the dialog window. If None
then an invisible root window is created and destroyed.
"""
## print "DEBUG: call to save_cbf cbf=", cbf, "file_extensions=", file_extensions
if cbf == None:
raise ValueError("To save a cbf, the cbf must be created first.")
if maxfiles < 5: maxfiles = 5
if mode != "wide" and mode != "narrow" :
raise ValueError("To save a file, mode must be wide or narrow.")
defaultextension = ".cbf"
if file_extensions is not None:
if not isinstance(file_extensions, (list,tuple)):
file_extensions = [file_extensions]
defaultextension = file_extensions
filetypes = []
for filetype in file_extensions:
if filetype[0] != "*" and filetype[0] != ".": filetype="."+filetype
if filetype[0] != "*": filetype = "*"+filetype
description = ""
if filetype.lower() == "*.cbf": description = "Crystallographic Binary Files"
if filetype.lower() == "*.cif": description = "Crystallographic Information Files"
if filetype.lower() == "*.dic": description = "Crystallographic Information File Dictionaries"
if filetype.lower() == "*.txt": description = "Text Files"
if filetype.lower() == "*.*": description = "All Files"
filetypes.append((description,filetype))
else:
filetypes = [("Crystallographic Binary Files","*.cbf"),\
("Crystallographic Information Files","*.cif"),\
("Crystallographic Information File Dictionaries","*.dic"),\
("Text files","*.txt"), \
("All files","*.*")]
if cbf == None: return None
parent = root
if root == None:
thread.start_new_thread(dummyparent,(x,y))
while parent==None: time.sleep(1)
filename = TKFILEDIALOG.asksaveasfilename(defaultextension=defaultextension, \
title=title, \
filetypes = [("Crystallographic Binary Files","*.cbf"),\
("Crystallographic Information Files","*.cif"),\
("Crystallographic Information File Dictionaries","*.dic"),\
("Text files","*.txt"), \
("All files","*.*")], \
parent = parent)
if root == None:
parent.destroy()
if filename == '':
return None
if filename[-1] == '|' or filename[-1] == ' ':
filename = filename[:-1]
if filename == '':
return None
t = filename.split(".")
ext = ''
if len(t) > 0:
ext = '.'+t[-1]
elif t[0] == '':
return None
if file_extensions is not None:
if ext.lower() != (file_extensions[0]).lower:
filename += file_extensions[0]
ext = file_extensions[0];
ciforcbf = pycbf.CBF
if ext.lower() == ".cif" or ext.lower() == ".dic" or ext.lower() == ".txt":
ciforcbf = pycbf.CIF
try:
if mode.lower() == "wide":
cbf.write_widefile(filename,ciforcbf,flags,encoding)
else:
cbf.write_file(filename,ciforcbf,flags,encoding)
menus.visible = 0
del menus
currentdisplay.select()
return cbf
except:
return None
def get_cbf(cbf = None, file_extensions=None, x=100, y=100, title="Open CBF", maxfiles=20, \
mode='wide', flags=pycbf.MSG_DIGEST, root = None):
"""
cbf_tkfiledialog.get_cbf
Use an askopenfilename dialog box to read the selected
file into a new cbf (if cbf==None), or into an existing
cbf. In either case the cbf object into which the read
was done is returned. It there is an error None is
returned.
file_extensions is either None, to use the default list
of extensions ["*.cbf", "*.cif", "*.dic", "*.txt", "*.*"],
or a specific list of extensions to use.
(x,y) are for compatibility with the vpython version of
this call. In this TK version, they are only used
as top left corner offsets for a dummy root window if
none is specified.
title is the dialog box title.
maxfiles is for compatibility with the vpython version of
this call and is not used in this TK version.
mode is either "wide" or "narrow" to specify reading 2048
character line length files or 80 character line length
files
flags is the bit-wise or of any flags needed for the
read. The default is pycbf.MSG_DIGEST
root is the parent window for the dialog window. If None
then an invisible root window is created and destroyed.
"""
global parent
if maxfiles < 5: maxfiles = 5
if mode != "wide" and mode != "narrow" :
raise ValueError("To read a file, mode must be wide or narrow.")
if file_extensions is not None:
if not isinstance(file_extensions, (list,tuple)):
file_extensions = [file_extensions]
filetypes = []
for filetype in file_extensions:
if filetype[0] != "*" and filetype[0] != ".": filetype="."+filetype
if filetype[0] != "*": filetype = "*"+filetype
description = ""
if filetype.lower() == "*.cbf": description = "Crystallographic Binary Files"
if filetype.lower() == "*.cif": description = "Crystallographic Information Files"
if filetype.lower() == "*.dic": description = "Crystallographic Information File Dictionaries"
if filetype.lower() == "*.txt": description = "Text Files"
if filetype.lower() == "*.*": description = "All Files"
filetypes.append((description,filetype))
else:
filetypes = [("Crystallographic Binary Files","*.cbf"),\
("Crystallographic Information Files","*.cif"),\
("Crystallographic Information File Dictionaries","*.dic"),\
("Text files","*.txt"), \
("All files","*.*")]
parent = root
if root == None:
thread.start_new_thread(dummyparent,(x,y))
while parent==None: time.sleep(1)
else:
parent = root
filename = TKFILEDIALOG.askopenfilename( \
title=title, \
filetypes = filetypes, \
parent = parent)
if root == None:
parent.destroy()
if filename is None:
return None
if cbf == None:
cbf = pycbf.cbf_handle_struct()
try:
if mode=="wide":
cbf.read_widefile(str(filename),flags)
else:
cbf.read_file(str(filename),flags)
return cbf
except:
return None
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