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#!/usr/bin/env python
# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016-2018 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.
#
# ###########################################################################*/
"""
Example to show the use of :class:`~silx.gui.plot.ImageView.ImageView` widget.
It can be used to open an EDF or TIFF file from the shell command line.
To view an image file with the current installed silx library:
``python examples/imageview.py <file to open>``
To get help:
``python examples/imageview.py -h``
For developers with a git clone you can use it with the bootstrap
To view an image file with the current installed silx library:
``./bootstrap.py python examples/imageview.py <file to open>``
"""
from __future__ import division
__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "18/10/2016"
import logging
from silx.gui.plot.ImageView import ImageViewMainWindow
from silx.gui import qt
import numpy
logging.basicConfig()
logger = logging.getLogger(__name__)
def main(argv=None):
"""Display an image from a file in an :class:`ImageView` widget.
:param argv: list of command line arguments or None (the default)
to use sys.argv.
:type argv: list of str
:return: Exit status code
:rtype: int
:raises IOError: if no image can be loaded from the file
"""
import argparse
import os.path
from silx.third_party.EdfFile import EdfFile
# Command-line arguments
parser = argparse.ArgumentParser(
description='Browse the images of an EDF file.')
parser.add_argument(
'-o', '--origin', nargs=2,
type=float, default=(0., 0.),
help="""Coordinates of the origin of the image: (x, y).
Default: 0., 0.""")
parser.add_argument(
'-s', '--scale', nargs=2,
type=float, default=(1., 1.),
help="""Scale factors applied to the image: (sx, sy).
Default: 1., 1.""")
parser.add_argument(
'-l', '--log', action="store_true",
help="Use logarithm normalization for colormap, default: Linear.")
parser.add_argument(
'filename', nargs='?',
help='EDF filename of the image to open')
args = parser.parse_args(args=argv)
# Open the input file
if not args.filename:
logger.warning('No image file provided, displaying dummy data')
edfFile = None
data = numpy.arange(1024 * 1024.).reshape(1024, 1024)
nbFrames = 1
else:
if not os.path.isfile(args.filename):
raise IOError('No input file: %s' % args.filename)
else:
edfFile = EdfFile(args.filename)
data = edfFile.GetData(0)
nbFrames = edfFile.GetNumImages()
if nbFrames == 0:
raise IOError(
'Cannot read image(s) from file: %s' % args.filename)
global app # QApplication must be global to avoid seg fault on quit
app = qt.QApplication([])
sys.excepthook = qt.exceptionHandler
mainWindow = ImageViewMainWindow()
mainWindow.setAttribute(qt.Qt.WA_DeleteOnClose)
if args.log: # Use log normalization by default
colormap = mainWindow.getDefaultColormap()
colormap['normalization'] = 'log'
mainWindow.setColormap(colormap)
mainWindow.setImage(data,
origin=args.origin,
scale=args.scale)
if edfFile is not None and nbFrames > 1:
# Add a toolbar for multi-frame EDF support
multiFrameToolbar = qt.QToolBar('Multi-frame')
multiFrameToolbar.addWidget(qt.QLabel(
'Frame [0-%d]:' % (nbFrames - 1)))
spinBox = qt.QSpinBox()
spinBox.setRange(0, nbFrames - 1)
def updateImage(index):
mainWindow.setImage(edfFile.GetData(index),
origin=args.origin,
scale=args.scale,
reset=False)
spinBox.valueChanged[int].connect(updateImage)
multiFrameToolbar.addWidget(spinBox)
mainWindow.addToolBar(multiFrameToolbar)
mainWindow.show()
mainWindow.setFocus(qt.Qt.OtherFocusReason)
return app.exec_()
if __name__ == "__main__":
import sys
sys.exit(main(argv=sys.argv[1:]))
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