source: sasview/src/sas/qtgui/SlitSizeCalculator.py @ 0ba0774

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 0ba0774 was 886d2f2c, checked in by wojciech, 8 years ago

A few fixes after code review

  • Property mode set to 100644
File size: 4.1 KB
Line 
1"""
2Slit Size Calculator Panel
3"""
4import os
5import sys
6
7from PyQt4 import QtGui
8from PyQt4 import QtCore
9from UI.SlitSizeCalculator import Ui_SlitSizeCalculator
10from sas.sascalc.dataloader.loader import Loader
11from sas.sascalc.calculator.slit_length_calculator import SlitlengthCalculator
12
13
14class SlitSizeCalculator(QtGui.QDialog, Ui_SlitSizeCalculator):
15    """
16    Provides the slit length calculator GUI.
17    """
18    def __init__(self, parent=None):
19        super(SlitSizeCalculator, self).__init__()
20        self.setupUi(self)
21
22        self.setWindowTitle("Slit Size Calculator")
23        self._parent = parent
24
25        self.thickness = SlitlengthCalculator()
26
27        # signals
28        self.helpButton.clicked.connect(self.onHelp)
29        self.browseButton.clicked.connect(self.onBrowse)
30        self.closeButton.clicked.connect(self.onClose)
31
32        # no reason to have this widget resizable
33        self.setFixedSize(self.minimumSizeHint())
34
35
36    def onHelp(self):
37        """
38        Bring up the Slit Size Calculator calculator Documentation whenever
39        the HELP button is clicked.
40        Calls DocumentationWindow with the path of the location within the
41        documentation tree (after /doc/ ....".
42        """
43        try:
44            location = self._parent.HELP_DIRECTORY_LOCATION + \
45                "/user/sasgui/perspectives/calculator/slit_calculator_help.html"
46
47            self._parent._helpView.load(QtCore.QUrl(location))
48            self._parent._helpView.show()
49        except AttributeError:
50            # No manager defined - testing and standalone runs
51            pass
52
53    def onBrowse(self):
54        """
55        Browse the file and calculate slit lenght upon loading
56        """
57        path_str = self.chooseFile()
58        if not path_str:
59            return
60        loader = Loader()
61        data = loader.load(path_str)
62
63        self.data_file.setText(os.path.basename(path_str))
64        self.calculateSlitSize(data)
65
66    def chooseFile(self):
67        """
68        Shows the Open file dialog and returns the chosen path(s)
69        """
70
71        # Location is automatically saved - no need to keep track of the last dir
72        # But only with Qt built-in dialog (non-platform native)
73        path = QtGui.QFileDialog.getOpenFileName(self, "Choose a file", "",
74                                                 "SAXSess 1D data (*.txt *.TXT *.dat *.DAT)", None,
75                                                 QtGui.QFileDialog.DontUseNativeDialog)
76
77        if path is None:
78            return
79
80        if isinstance(path, QtCore.QString):
81            path = str(path)
82
83        return path
84
85    def onClose(self):
86        """
87        close the window containing this panel
88        """
89        self.close()
90
91    def clearResults(self):
92        """
93        Clear the content of output LineEdits
94        """
95        self.slit_length_out.setText("ERROR!")
96        self.unit_out.clear()
97
98    def calculateSlitSize(self, data=None):
99        """
100        Computes slit lenght from given 1D data
101        """
102
103        if data is None:
104            self.clearResults()
105            msg = "ERROR: Data hasn't been loaded correctly"
106            raise RuntimeError, msg
107
108        if data.__class__.__name__ == 'Data2D':
109            self.clearResults()
110            msg = "Slit Length cannot be computed for 2D Data"
111            raise RuntimeError, msg
112
113        #compute the slit size
114        try:
115            xdata = data.x
116            ydata = data.y
117            if xdata == [] or xdata is None or ydata == [] or ydata is None:
118                msg = "The current data is empty please check x and y"
119                raise ValueError, msg
120            slit_length_calculator = SlitlengthCalculator()
121            slit_length_calculator.set_data(x=xdata, y=ydata)
122            slit_length = slit_length_calculator.calculate_slit_length()
123        except:
124            self.clearResults()
125            msg = "Slit Size Calculator: %s" % (sys.exc_value)
126            raise RuntimeError, msg
127
128        slit_length_str = "{:.5f}".format(slit_length)
129        self.slit_length_out.setText(slit_length_str)
130
131        #Display unit, which most likely needs to be 1/Ang but needs to be confirmed
132        self.unit_out.setText("[Unknown]")
133
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