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| 3 | |
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| 4 | ################################################################################ |
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| 5 | #This software was developed by the University of Tennessee as part of the |
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| 6 | #Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
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| 7 | #project funded by the US National Science Foundation. |
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| 8 | # |
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| 9 | #See the license text in license.txt |
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| 10 | # |
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| 11 | #copyright 2009, University of Tennessee |
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| 12 | ################################################################################ |
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| 13 | import os |
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| 14 | import sys |
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| 15 | import wx |
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| 16 | import copy |
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| 17 | import logging, time |
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| 18 | from sans.invariant import invariant |
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| 19 | |
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| 20 | from DataLoader.data_info import Data1D as LoaderData1D |
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| 21 | from sans.guiframe.dataFitting import Theory1D, Data1D |
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| 22 | |
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| 23 | from sans.guicomm.events import NewPlotEvent, StatusEvent |
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| 24 | from sans.guicomm.events import ERR_DATA |
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| 25 | from invariant_state import Reader as reader |
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| 26 | from DataLoader.loader import Loader |
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| 27 | from invariant_panel import InvariantPanel |
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| 28 | |
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| 29 | class Plugin: |
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| 30 | """ |
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| 31 | This class defines the interface for invariant Plugin class |
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| 32 | that can be used by the gui_manager. |
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| 33 | """ |
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| 34 | |
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| 35 | def __init__(self, standalone=False): |
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| 36 | """ |
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| 37 | Abstract class for gui_manager Plugins. |
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| 38 | """ |
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| 39 | ## Plug-in name. It will appear on the application menu. |
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| 40 | self.sub_menu = "Invariant" |
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| 41 | |
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| 42 | ## Reference to the parent window. Filled by get_panels() below. |
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| 43 | self.parent = None |
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| 44 | #dictionary containing data name and error on dy of that data |
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| 45 | self.err_dy = {} |
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| 46 | ## List of panels that you would like to open in AUI windows |
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| 47 | # for your plug-in. This defines your plug-in "perspective" |
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| 48 | self.perspective = [] |
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| 49 | |
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| 50 | self.state_reader = None |
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| 51 | """ |
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| 52 | # Create a CanSAS/Pr reader |
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| 53 | self.state_reader = Reader(self.set_state) |
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| 54 | l = Loader() |
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| 55 | l.associate_file_reader('.inv', self.state_reader) |
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| 56 | """ |
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| 57 | # Log startup |
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| 58 | logging.info("Invariant plug-in started") |
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| 59 | |
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| 60 | def populate_menu(self, id, parent): |
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| 61 | """ |
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| 62 | Create and return the list of application menu |
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| 63 | items for the plug-in. |
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| 64 | |
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| 65 | :param id: deprecated. Un-used. |
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| 66 | :param parent: parent window |
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| 67 | |
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| 68 | :return: plug-in menu |
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| 69 | """ |
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| 70 | return [] |
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| 71 | |
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| 72 | def help(self, evt): |
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| 73 | """ |
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| 74 | Show a general help dialog. |
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| 75 | """ |
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| 76 | from help_panel import HelpWindow |
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| 77 | frame = HelpWindow(None, -1) |
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| 78 | frame.Show(True) |
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| 79 | |
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| 80 | def get_panels(self, parent): |
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| 81 | """ |
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| 82 | Create and return the list of wx.Panels for your plug-in. |
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| 83 | Define the plug-in perspective. |
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| 84 | |
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| 85 | Panels should inherit from DefaultPanel defined below, |
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| 86 | or should present the same interface. They must define |
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| 87 | "window_caption" and "window_name". |
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| 88 | |
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| 89 | :param parent: parent window |
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| 90 | |
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| 91 | :return: list of panels |
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| 92 | """ |
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| 93 | ## Save a reference to the parent |
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| 94 | self.parent = parent |
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| 95 | #add error back to the data |
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| 96 | self.parent.Bind(ERR_DATA, self._on_data_error) |
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| 97 | |
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| 98 | |
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| 99 | self.invariant_panel = InvariantPanel(parent=self.parent) |
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| 100 | self.invariant_panel.set_manager(manager=self) |
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| 101 | self.perspective.append(self.invariant_panel.window_name) |
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| 102 | #Create reader when fitting panel are created |
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| 103 | self.state_reader = reader(self.set_state) |
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| 104 | #append that reader to list of available reader |
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| 105 | loader = Loader() |
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| 106 | loader.associate_file_reader(".inv", self.state_reader) |
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| 107 | # Return the list of panels |
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| 108 | return [self.invariant_panel] |
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| 109 | |
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| 110 | def get_tools(self): |
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| 111 | """ |
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| 112 | Returns a set of menu entries for tools |
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| 113 | """ |
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| 114 | return [] |
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| 115 | |
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| 116 | |
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| 117 | def get_context_menu(self, graph=None): |
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| 118 | """ |
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| 119 | This method is optional. |
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| 120 | |
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| 121 | When the context menu of a plot is rendered, the |
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| 122 | get_context_menu method will be called to give you a |
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| 123 | chance to add a menu item to the context menu. |
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| 124 | |
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| 125 | A ref to a Graph object is passed so that you can |
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| 126 | investigate the plot content and decide whether you |
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| 127 | need to add items to the context menu. |
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| 128 | |
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| 129 | This method returns a list of menu items. |
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| 130 | Each item is itself a list defining the text to |
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| 131 | appear in the menu, a tool-tip help text, and a |
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| 132 | call-back method. |
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| 133 | |
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| 134 | :param graph: the Graph object to which we attach the context menu |
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| 135 | |
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| 136 | :return: a list of menu items with call-back function |
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| 137 | """ |
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| 138 | self.graph = graph |
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| 139 | invariant_option = "Compute invariant" |
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| 140 | invariant_hint = "Will displays the invariant panel for futher computation" |
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| 141 | |
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| 142 | for item in self.graph.plottables: |
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| 143 | if item.name == graph.selected_plottable : |
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| 144 | if issubclass(item.__class__,LoaderData1D): |
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| 145 | |
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| 146 | if item.name !="$I_{obs}(q)$" and item.name !="$P_{fit}(r)$": |
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| 147 | if hasattr(item, "group_id"): |
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| 148 | return [[invariant_option, |
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| 149 | invariant_hint, self._compute_invariant]] |
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| 150 | return [] |
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| 151 | |
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| 152 | |
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| 153 | def get_perspective(self): |
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| 154 | """ |
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| 155 | Get the list of panel names for this perspective |
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| 156 | """ |
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| 157 | return self.perspective |
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| 158 | |
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| 159 | def on_perspective(self, event): |
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| 160 | """ |
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| 161 | Call back function for the perspective menu item. |
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| 162 | We notify the parent window that the perspective |
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| 163 | has changed. |
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| 164 | |
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| 165 | :param event: menu event |
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| 166 | """ |
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| 167 | self.parent.set_perspective(self.perspective) |
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| 168 | |
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| 169 | def post_init(self): |
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| 170 | """ |
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| 171 | Post initialization call back to close the loose ends |
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| 172 | """ |
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| 173 | pass |
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| 174 | |
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| 175 | def set_default_perspective(self): |
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| 176 | """ |
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| 177 | Call back method that True to notify the parent that the current plug-in |
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| 178 | can be set as default perspective. |
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| 179 | when returning False, the plug-in is not candidate for an automatic |
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| 180 | default perspective setting |
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| 181 | """ |
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| 182 | return False |
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| 183 | |
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| 184 | def copy_data(self, item, dy=None): |
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| 185 | """ |
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| 186 | receive a data 1D and the list of errors on dy |
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| 187 | and create a new data1D data |
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| 188 | """ |
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| 189 | id = None |
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| 190 | if hasattr(item,"id"): |
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| 191 | id = item.id |
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| 192 | |
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| 193 | data = Data1D(x=item.x, y=item.y, dx=None, dy=None) |
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| 194 | data.copy_from_datainfo(item) |
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| 195 | item.clone_without_data(clone=data) |
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| 196 | data.dy = dy |
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| 197 | data.name = item.name |
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| 198 | |
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| 199 | ## allow to highlight data when plotted |
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| 200 | data.interactive = item.interactive |
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| 201 | ## when 2 data have the same id override the 1 st plotted |
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| 202 | data.id = id |
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| 203 | data.group_id = item.group_id |
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| 204 | return data |
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| 205 | |
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| 206 | def _on_data_error(self, event): |
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| 207 | """ |
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| 208 | receives and event from plotting plu-gins to store the data name and |
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| 209 | their errors of y coordinates for 1Data hide and show error |
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| 210 | """ |
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| 211 | self.err_dy = event.err_dy |
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| 212 | |
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| 213 | def _compute_invariant(self, event): |
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| 214 | """ |
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| 215 | Open the invariant panel to invariant computation |
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| 216 | """ |
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| 217 | self.panel = event.GetEventObject() |
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| 218 | Plugin.on_perspective(self,event=event) |
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| 219 | for plottable in self.panel.graph.plottables: |
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| 220 | if plottable.name == self.panel.graph.selected_plottable: |
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| 221 | ## put the errors values back to the model if the errors were hiden |
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| 222 | ## before sending them to the fit engine |
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| 223 | if len(self.err_dy)>0: |
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| 224 | dy = plottable.dy |
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| 225 | if plottable.name in self.err_dy.iterkeys(): |
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| 226 | dy = self.err_dy[plottable.name] |
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| 227 | data = self.copy_data(plottable, dy) |
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| 228 | else: |
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| 229 | data = plottable |
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| 230 | self.compute_helper(data=data) |
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| 231 | |
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| 232 | def compute_helper(self, data): |
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| 233 | """ |
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| 234 | """ |
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| 235 | if data is None: |
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| 236 | return |
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| 237 | # Store reference to data |
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| 238 | self.__data = data |
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| 239 | # Set the data set to be user for invariant calculation |
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| 240 | self.invariant_panel.set_current_data(data=data) |
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| 241 | |
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| 242 | def save_file(self, filepath, state=None): |
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| 243 | """ |
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| 244 | Save data in provided state object. |
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| 245 | |
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| 246 | :param filepath: path of file to write to |
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| 247 | :param state: invariant state |
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| 248 | """ |
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| 249 | |
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| 250 | # Write the state to file |
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| 251 | # First, check that the data is of the right type |
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| 252 | |
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| 253 | current_plottable = self.__data |
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| 254 | |
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| 255 | if issubclass(current_plottable.__class__, LoaderData1D): |
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| 256 | self.state_reader.write(filepath, current_plottable, state) |
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| 257 | else: |
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| 258 | raise RuntimeError, "invariant.save_file: the data being saved is not a DataLoader.data_info.Data1D object" |
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| 259 | |
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| 260 | def set_state(self, state, datainfo=None): |
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| 261 | """ |
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| 262 | Call-back method for the state reader. |
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| 263 | This method is called when a .inv file is loaded. |
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| 264 | |
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| 265 | :param state: State object |
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| 266 | """ |
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| 267 | try: |
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| 268 | if datainfo is None: |
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| 269 | raise RuntimeError, "invariant.set_state: datainfo parameter cannot be None in standalone mode" |
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| 270 | datainfo.meta_data['invstate'].file = datainfo.meta_data['invstate'].file |
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| 271 | datainfo.name = datainfo.meta_data['invstate'].file |
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| 272 | datainfo.filename = datainfo.meta_data['invstate'].file |
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| 273 | self.__data = datainfo |
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| 274 | self.__data.group_id = datainfo.filename |
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| 275 | self.__data.id = datainfo.filename |
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| 276 | |
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| 277 | temp_state = copy.deepcopy(state) |
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| 278 | |
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| 279 | # Load the invariant states |
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| 280 | # Make sure the user sees the invariant panel after loading |
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| 281 | self.parent.set_perspective(self.perspective) |
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| 282 | # set state |
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| 283 | self.invariant_panel.set_state(state=temp_state,data=self.__data) |
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| 284 | |
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| 285 | except: |
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| 286 | logging.error("invariant.set_state: %s" % sys.exc_value) |
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| 287 | |
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| 288 | |
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| 289 | |
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| 290 | def plot_theory(self, data=None, name=None): |
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| 291 | """ |
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| 292 | Receive a data set and post a NewPlotEvent to parent. |
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| 293 | |
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| 294 | :param data: extrapolated data to be plotted |
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| 295 | :param name: Data's name to use for the legend |
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| 296 | """ |
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| 297 | import copy |
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| 298 | if data is None: |
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| 299 | new_plot = Theory1D(x=[], y=[], dy=None) |
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| 300 | else: |
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| 301 | scale =self.invariant_panel.get_scale() |
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| 302 | background = self.invariant_panel.get_background() |
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| 303 | |
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| 304 | if scale != 0: |
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| 305 | # Put back the sacle and bkg for plotting |
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| 306 | data.y = (data.y + background)/scale |
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| 307 | new_plot = Theory1D(x=data.x, y=data.y, dy=None) |
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| 308 | else: |
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| 309 | msg = "Scale can not be zero." |
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| 310 | raise ValueError, msg |
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| 311 | |
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| 312 | new_plot.name = name |
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| 313 | new_plot.xaxis(self.__data._xaxis, self.__data._xunit) |
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| 314 | new_plot.yaxis(self.__data._yaxis, self.__data._yunit) |
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| 315 | new_plot.group_id = self.__data.group_id |
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| 316 | new_plot.id = self.__data.id + name |
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| 317 | # Save theory_data in a state |
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| 318 | if data != None: |
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| 319 | name_head = name.split('-') |
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| 320 | if name_head[0]=='Low': |
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| 321 | self.invariant_panel.state.theory_lowQ = copy.deepcopy(new_plot) |
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| 322 | elif name_head[0]=='High': |
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| 323 | self.invariant_panel.state.theory_highQ = copy.deepcopy(new_plot) |
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| 324 | |
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| 325 | wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot, title=self.__data.name)) |
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| 326 | |
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| 327 | def plot_data(self, scale, background): |
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| 328 | """ |
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| 329 | replot the current data if the user enters a new scale or background |
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| 330 | """ |
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| 331 | new_plot = scale * self.__data - background |
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| 332 | new_plot.name = self.__data.name |
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| 333 | new_plot.group_id = self.__data.group_id |
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| 334 | new_plot.id = self.__data.id |
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| 335 | |
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| 336 | # Save data in a state: but seems to never happen |
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| 337 | if new_plot != None: |
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| 338 | self.invariant_panel.state.data = copy.deepcopy(new_plot) |
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| 339 | wx.PostEvent(self.parent, NewPlotEvent(plot=new_plot, title=new_plot.name)) |
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| 340 | |
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