1 | from PyQt4 import QtGui |
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2 | from PyQt4 import QtCore |
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3 | from UI.SlitSizeCalculator import Ui_SlitSizeCalculator |
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4 | from twisted.internet import threads |
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5 | import logging |
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6 | |
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7 | # sas-global |
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8 | from sas.sascalc.calculator.slit_length_calculator import SlitlengthCalculator |
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9 | from DataExplorer import DataExplorerWindow |
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10 | |
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11 | class SlitSizeCalculator(QtGui.QDialog, Ui_SlitSizeCalculator): |
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12 | def __init__(self, parent=None, guimanager=None, manager=None): |
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13 | super(SlitSizeCalculator, self).__init__() |
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14 | self.setupUi(self) |
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15 | |
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16 | self.setWindowTitle("Slit Size Calculator") |
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17 | self._parent = parent |
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18 | self._guimanager = guimanager |
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19 | self._manager = manager |
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20 | |
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21 | self.thickness = SlitlengthCalculator() |
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22 | |
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23 | # signals |
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24 | self.helpButton.clicked.connect(self.onHelp) |
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25 | self.browseButton.clicked.connect(self.onBrowse) |
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26 | self.closeButton.clicked.connect(self.onClose) |
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27 | |
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28 | # no reason to have this widget resizable |
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29 | self.setFixedSize(self.minimumSizeHint()) |
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30 | |
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31 | def onHelp(self): |
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32 | """ |
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33 | Bring up the Kiessig fringe calculator Documentation whenever |
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34 | the HELP button is clicked. |
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35 | Calls DocumentationWindow with the path of the location within the |
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36 | documentation tree (after /doc/ ....". |
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37 | """ |
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38 | try: |
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39 | location = self._parent.HELP_DIRECTORY_LOCATION + \ |
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40 | "/user/sasgui/perspectives/calculator/slit_calculator_help.html" |
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41 | |
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42 | self._parent._helpView.load(QtCore.QUrl(location)) |
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43 | self._parent._helpView.show() |
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44 | except AttributeError: |
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45 | # No manager defined - testing and standalone runs |
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46 | pass |
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47 | |
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48 | def onBrowse(self): |
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49 | """ |
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50 | Execute the computation of thickness |
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51 | """ |
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52 | path_str = self.chooseFiles() |
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53 | if not path_str: |
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54 | return |
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55 | self.loadFromURL(path_str) |
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56 | #Path_str is a list - it needs to be changed, so that only one file can be uploaded |
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57 | self.deltaq_in.setText(path_str[0]) |
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58 | |
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59 | def loadFromURL(self, url): |
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60 | """ |
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61 | Threaded file load |
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62 | """ |
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63 | data_explorer = DataExplorerWindow(parent=self._parent, guimanager=self._guimanager) |
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64 | load_thread = threads.deferToThread(data_explorer.readData, url) |
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65 | load_thread.addCallback(data_explorer.loadComplete) |
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66 | #On complete loading |
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67 | |
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68 | def chooseFiles(self): |
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69 | """ |
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70 | Shows the Open file dialog and returns the chosen path(s) |
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71 | """ |
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72 | |
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73 | # Location is automatically saved - no need to keep track of the last dir |
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74 | # But only with Qt built-in dialog (non-platform native) |
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75 | paths = QtGui.QFileDialog.getOpenFileNames(self, "Choose a file", "", |
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76 | "SAXSess Data 1D (*.txt *.TXT *.dat *.DAT)", None, |
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77 | QtGui.QFileDialog.DontUseNativeDialog) |
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78 | if paths is None: |
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79 | return |
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80 | |
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81 | if isinstance(paths, QtCore.QStringList): |
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82 | paths = [str(f) for f in paths] |
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83 | |
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84 | if not isinstance(paths, list): |
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85 | paths = [paths] |
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86 | |
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87 | return paths |
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88 | |
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89 | def onClose(self): |
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90 | """ |
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91 | close the window containing this panel |
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92 | """ |
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93 | self.close() |
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94 | |
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95 | def complete_loading(self, data=None): |
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96 | """ |
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97 | Complete the loading and compute the slit size |
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98 | """ |
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99 | #TODO: Provided we have an access to data then it should be fairly easy |
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100 | index = self.treeView.selectedIndexes()[0] |
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101 | model_item = self.model.itemFromIndex(self.data_proxy.mapToSource(index)) |
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102 | data = GuiUtils.dataFromItem(model_item) |
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103 | |
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104 | if data is None or isinstance(data, Data2D): |
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105 | #I guess this doesn't apply |
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106 | if self.parent.parent is None: |
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107 | return |
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108 | msg = "Slit Length cannot be computed for 2D Data" |
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109 | logging.info(msg) |
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110 | return |
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111 | self.data_name_tcl.SetValue(str(data.filename)) |
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112 | #compute the slit size |
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113 | try: |
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114 | x = data.x |
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115 | y = data.y |
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116 | if x == [] or x is None or y == [] or y is None: |
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117 | msg = "The current data is empty please check x and y" |
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118 | raise ValueError, msg |
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119 | slit_length_calculator = SlitlengthCalculator() |
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120 | slit_length_calculator.set_data(x=x, y=y) |
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121 | slit_length = slit_length_calculator.calculate_slit_length() |
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122 | except: |
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123 | if self.parent.parent is None: |
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124 | return |
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125 | msg = "Slit Size Calculator: %s" % (sys.exc_value) |
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126 | logging.info(msg) |
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127 | return |
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128 | self.slit_size_tcl.SetValue(str(slit_length)) |
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129 | #Display unit |
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130 | self.slit_size_unit_tcl.SetValue('[Unknown]') |
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131 | if self.parent.parent is None: |
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132 | return |
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133 | msg = "Load Complete" |
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134 | logging.info(msg) |
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135 | |
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