[examples] Add magnification example

examples/magnification.py

+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2016-2017 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 showing the widget :mod:`~darfix.gui.dimensionsWidget.DimensionWidget`.
+"""
+
+__authors__ = ["J. Garriga"]
+__license__ = "MIT"
+__date__ = "01/06/2021"
+
+import signal
+import sys
+
+from silx.gui import qt
+from darfix.test.utils import createRandomDataset
+from darfix.gui.magnificationWidget import MagnificationWidget
+
+
+def exec_():
+    qapp = qt.QApplication([])
+
+    # add connection with ctrl + c signal
+    qt.QLocale.setDefault(qt.QLocale.c())
+    signal.signal(signal.SIGINT, sigintHandler)
+    sys.excepthook = qt.exceptionHandler
+    timer = qt.QTimer()
+    timer.start(500)
+    # Application have to wake up Python interpreter, else SIGINT is not
+    # catch
+    timer.timeout.connect(lambda: None)
+
+    w = MagnificationWidget()
+
+    dataset = createRandomDataset(dims=(100, 100), nb_data_files=10, header=True)
+
+    w.setDataset(dataset)
+    w.show()
+
+    qapp.exec_()
+
+
+def sigintHandler(*args):
+    """Handler for the SIGINT signal."""
+    qt.QApplication.quit()
+
+
+if __name__ == "__main__":
+
+    exec_()