source: sasview/src/sas/qtgui/Calculators/SlitSizeCalculator.py @ 8353d90

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalc
Last change on this file since 8353d90 was 53c771e, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago

Converted unit tests

  • Property mode set to 100644
File size: 4.6 KB
Line 
1"""
2Slit Size Calculator Panel
3"""
4import os
5import sys
6import logging
7
8from PyQt5 import QtCore
9from PyQt5 import QtGui
10from PyQt5 import QtWidgets
11
12from sas.qtgui.UI import main_resources_rc
13import sas.qtgui.Utilities.GuiUtils as GuiUtils
14
15from .UI.SlitSizeCalculator import Ui_SlitSizeCalculator
16from sas.sascalc.dataloader.loader import Loader
17from sas.sascalc.calculator.slit_length_calculator import SlitlengthCalculator
18
19
20class SlitSizeCalculator(QtWidgets.QDialog, Ui_SlitSizeCalculator):
21    """
22    Provides the slit length calculator GUI.
23    """
24    def __init__(self, parent=None):
25        super(SlitSizeCalculator, self).__init__()
26        self.setupUi(self)
27
28        self.setWindowTitle("Slit Size Calculator")
29        self._parent = parent
30
31        self.thickness = SlitlengthCalculator()
32
33        # signals
34        self.helpButton.clicked.connect(self.onHelp)
35        self.browseButton.clicked.connect(self.onBrowse)
36        self.closeButton.clicked.connect(self.onClose)
37
38        # no reason to have this widget resizable
39        self.setFixedSize(self.minimumSizeHint())
40
41
42    def onHelp(self):
43        """
44        Bring up the Slit Size Calculator calculator Documentation whenever
45        the HELP button is clicked.
46        Calls DocumentationWindow with the path of the location within the
47        documentation tree (after /doc/ ....".
48        """
49        try:
50            location = GuiUtils.HELP_DIRECTORY_LOCATION + \
51                "/user/sasgui/perspectives/calculator/slit_calculator_help.html"
52
53            self._parent._helpView.load(QtCore.QUrl(location))
54            self._parent._helpView.show()
55        except AttributeError:
56            # No manager defined - testing and standalone runs
57            pass
58
59    def onBrowse(self):
60        """
61        Browse the file and calculate slit lenght upon loading
62        """
63        path_str = self.chooseFile()
64        if not path_str:
65            return
66        loader = Loader()
67        try:
68            data = loader.load(path_str)
69            data = data[0]
70        # Can return multiple exceptions - gather them all under one umbrella and complain
71        except Exception as ex:
72            logging.error(ex)
73            return
74
75        self.data_file.setText(os.path.basename(path_str))
76        self.calculateSlitSize(data)
77
78    def chooseFile(self):
79        """
80        Shows the Open file dialog and returns the chosen path(s)
81        """
82
83        # Location is automatically saved - no need to keep track of the last dir
84        # But only with Qt built-in dialog (non-platform native)
85        path = QtWidgets.QFileDialog.getOpenFileName(self, "Choose a file", "",
86                                                 "SAXSess 1D data (*.txt *.TXT *.dat *.DAT)",
87                                                 None,
88                                                 QtWidgets.QFileDialog.DontUseNativeDialog)[0]
89        return path
90
91    def onClose(self):
92        """
93        close the window containing this panel
94        """
95        self.close()
96
97    def clearResults(self):
98        """
99        Clear the content of output LineEdits
100        """
101        self.slit_length_out.setText("ERROR!")
102        self.unit_out.clear()
103
104    def calculateSlitSize(self, data=None):
105        """
106        Computes slit lenght from given 1D data
107        """
108        if data is None:
109            self.clearResults()
110            msg = "ERROR: Data hasn't been loaded correctly"
111            logging.error(msg)
112            return
113
114        if data.__class__.__name__ == 'Data2D':
115            self.clearResults()
116            msg = "Slit Length cannot be computed for 2D Data"
117            logging.error(msg)
118            return
119
120        #compute the slit size
121        try:
122            xdata = data.x
123            ydata = data.y
124            #if xdata == [] or xdata is None or ydata == [] or ydata is None:
125            if (not xdata or xdata is None) or (not ydata or ydata is None):
126                msg = "The current data is empty please check x and y"
127                logging.error(msg)
128                return
129            slit_length_calculator = SlitlengthCalculator()
130            slit_length_calculator.set_data(x=xdata, y=ydata)
131            slit_length = slit_length_calculator.calculate_slit_length()
132        except:
133            self.clearResults()
134            msg = "Slit Size Calculator: %s" % (sys.exc_info()[1])
135            logging.error(msg)
136            return
137
138        slit_length_str = "{:.5f}".format(slit_length)
139        self.slit_length_out.setText(slit_length_str)
140
141        #Display unit, which most likely needs to be 1/Ang but needs to be confirmed
142        self.unit_out.setText("[Unknown]")
143
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