/usr/lib/python2.7/dist-packages/guiqwt/qthelpers.py is in python-guiqwt 3.0.2-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | # -*- coding: utf-8 -*-
#
# Copyright © 2011 CEA
# Pierre Raybaut
# Licensed under the terms of the CECILL License
# (see guidata/__init__.py for details)
"""
qthelpers
---------
The ``guiqwt.qthelpers`` module provides helper functions for developing
easily Qt-based graphical user interfaces with guiqwt.
Ready-to-use open/save dialogs:
:py:data:`guiqwt.qthelpers.exec_image_save_dialog`
Executes an image save dialog box (QFileDialog.getSaveFileName)
:py:data:`guiqwt.qthelpers.exec_image_open_dialog`
Executes an image open dialog box (QFileDialog.getOpenFileName)
:py:data:`guiqwt.qthelpers.exec_images_open_dialog`
Executes an image*s* open dialog box (QFileDialog.getOpenFileNames)
Reference
~~~~~~~~~
.. autofunction:: exec_image_save_dialog
.. autofunction:: exec_image_open_dialog
.. autofunction:: exec_images_open_dialog
"""
import sys
import os.path as osp
from guidata.qt.QtGui import QMessageBox
from guidata.qt.compat import getsavefilename, getopenfilename, getopenfilenames
from guidata.py3compat import to_text_string
# Local imports
from guiqwt.config import _
from guiqwt import io
#===============================================================================
# Ready-to-use open/save dialogs
#===============================================================================
def exec_image_save_dialog(parent, data, template=None,
basedir='', app_name=None):
"""
Executes an image save dialog box (QFileDialog.getSaveFileName)
* parent: parent widget (None means no parent)
* data: image pixel array data
* template: image template (pydicom dataset) for DICOM files
* basedir: base directory ('' means current directory)
* app_name (opt.): application name (used as a title for an eventual
error message box in case something goes wrong when saving image)
Returns filename if dialog is accepted, None otherwise
"""
saved_in, saved_out, saved_err = sys.stdin, sys.stdout, sys.stderr
sys.stdout = None
filename, _filter = getsavefilename(parent, _("Save as"), basedir,
io.iohandler.get_filters('save', dtype=data.dtype, template=template))
sys.stdin, sys.stdout, sys.stderr = saved_in, saved_out, saved_err
if filename:
filename = to_text_string(filename)
kwargs = {}
if osp.splitext(filename)[1].lower() == '.dcm':
kwargs['template'] = template
try:
io.imwrite(filename, data, **kwargs)
return filename
except Exception as msg:
import traceback
traceback.print_exc()
QMessageBox.critical(parent,
_('Error') if app_name is None else app_name,
(_("%s could not be written:") % osp.basename(filename))+\
"\n"+str(msg))
return
def exec_image_open_dialog(parent, basedir='', app_name=None,
to_grayscale=True, dtype=None):
"""
Executes an image open dialog box (QFileDialog.getOpenFileName)
* parent: parent widget (None means no parent)
* basedir: base directory ('' means current directory)
* app_name (opt.): application name (used as a title for an eventual
error message box in case something goes wrong when saving image)
* to_grayscale (default=True): convert image to grayscale
Returns (filename, data) tuple if dialog is accepted, None otherwise
"""
saved_in, saved_out, saved_err = sys.stdin, sys.stdout, sys.stderr
sys.stdout = None
filename, _filter = getopenfilename(parent, _("Open"), basedir,
io.iohandler.get_filters('load', dtype=dtype))
sys.stdin, sys.stdout, sys.stderr = saved_in, saved_out, saved_err
filename = to_text_string(filename)
try:
data = io.imread(filename, to_grayscale=to_grayscale)
except Exception as msg:
import traceback
traceback.print_exc()
QMessageBox.critical(parent,
_('Error') if app_name is None else app_name,
(_("%s could not be opened:") % osp.basename(filename))+\
"\n"+str(msg))
return
return filename, data
def exec_images_open_dialog(parent, basedir='', app_name=None,
to_grayscale=True, dtype=None):
"""
Executes an image*s* open dialog box (QFileDialog.getOpenFileNames)
* parent: parent widget (None means no parent)
* basedir: base directory ('' means current directory)
* app_name (opt.): application name (used as a title for an eventual
error message box in case something goes wrong when saving image)
* to_grayscale (default=True): convert image to grayscale
Yields (filename, data) tuples if dialog is accepted, None otherwise
"""
saved_in, saved_out, saved_err = sys.stdin, sys.stdout, sys.stderr
sys.stdout = None
filenames, _filter = getopenfilenames(parent, _("Open"), basedir,
io.iohandler.get_filters('load', dtype=dtype))
sys.stdin, sys.stdout, sys.stderr = saved_in, saved_out, saved_err
filenames = [to_text_string(fname) for fname in list(filenames)]
for filename in filenames:
try:
data = io.imread(filename, to_grayscale=to_grayscale)
except Exception as msg:
import traceback
traceback.print_exc()
QMessageBox.critical(parent,
_('Error') if app_name is None else app_name,
(_("%s could not be opened:") % osp.basename(filename))+\
"\n"+str(msg))
return
yield filename, data
|