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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 2008, University of Tennessee |
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| 12 | ################################################################################ |
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| 13 | |
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| 14 | import wx |
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| 15 | import sys |
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| 16 | from sans.guiframe.events import EVT_NEW_PLOT |
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| 17 | from sans.guiframe.events import StatusEvent |
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| 18 | from sans.guiframe.plugin_base import PluginBase |
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| 19 | from sans.guiframe.dataFitting import Data1D |
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| 20 | from sans.guiframe.dataFitting import Data2D |
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| 21 | |
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| 22 | DEFAULT_MENU_ITEM_LABEL = "No plot available" |
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| 23 | DEFAULT_MENU_ITEM_ID = wx.NewId() |
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| 24 | |
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| 25 | class Plugin(PluginBase): |
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| 26 | """ |
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| 27 | Plug-in class to be instantiated by the GUI manager |
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| 28 | """ |
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| 29 | |
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| 30 | def __init__(self, standalone=False): |
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| 31 | PluginBase.__init__(self, name="Plotting", standalone=standalone) |
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| 32 | |
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| 33 | ## Plot panels |
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| 34 | self.plot_panels = {} |
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| 35 | self._panel_on_focus = None |
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| 36 | self.menu_default_id = None |
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| 37 | |
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| 38 | def set_panel_on_focus(self, panel): |
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| 39 | """ |
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| 40 | """ |
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| 41 | self._panel_on_focus = panel |
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| 42 | |
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| 43 | def is_always_active(self): |
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| 44 | """ |
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| 45 | return True is this plugin is always active even if the user is |
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| 46 | switching between perspectives |
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| 47 | """ |
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| 48 | return True |
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| 49 | |
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| 50 | def populate_menu(self, parent): |
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| 51 | """ |
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| 52 | Create a 'Plot' menu to list the panels |
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| 53 | available for displaying |
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| 54 | |
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| 55 | :param id: next available unique ID for wx events |
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| 56 | :param parent: parent window |
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| 57 | |
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| 58 | """ |
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| 59 | self.menu = wx.Menu() |
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| 60 | self.menu.Append(DEFAULT_MENU_ITEM_ID, DEFAULT_MENU_ITEM_LABEL, |
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| 61 | "No plot available") |
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| 62 | self.menu.FindItemByPosition(0).Enable(False) |
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| 63 | return [(self.menu, "Plot")] |
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| 64 | |
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| 65 | def get_panels(self, parent): |
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| 66 | """ |
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| 67 | Create and return a list of panel objects |
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| 68 | """ |
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| 69 | ## Save a reference to the parent |
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| 70 | self.parent = parent |
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| 71 | # Connect to plotting events |
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| 72 | self.parent.Bind(EVT_NEW_PLOT, self._on_plot_event) |
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| 73 | # We have no initial panels for this plug-in |
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| 74 | return [] |
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| 75 | |
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| 76 | def _on_show_panel(self, event): |
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| 77 | """show plug-in panel""" |
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| 78 | pass |
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| 79 | |
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| 80 | def remove_plot(self, group_id, id): |
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| 81 | """ |
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| 82 | remove plot of ID = id from a panel of group ID =group_id |
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| 83 | """ |
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| 84 | |
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| 85 | if group_id in self.plot_panels.keys(): |
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| 86 | panel = self.plot_panels[group_id] |
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| 87 | panel.remove_data_by_id(id=id) |
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| 88 | return True |
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| 89 | return False |
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| 90 | |
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| 91 | def clear_panel(self): |
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| 92 | """ |
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| 93 | """ |
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| 94 | pass |
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| 95 | |
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| 96 | def clear_panel_by_id(self, group_id): |
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| 97 | """ |
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| 98 | clear the graph |
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| 99 | """ |
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| 100 | if group_id in self.plot_panels.keys(): |
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| 101 | panel = self.plot_panels[group_id] |
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| 102 | panel.graph.reset() |
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| 103 | return True |
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| 104 | return False |
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| 105 | |
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| 106 | |
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| 107 | def hide_panel(self, group_id): |
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| 108 | """ |
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| 109 | hide panel with group ID = group_id |
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| 110 | """ |
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| 111 | if group_id in self.plot_panels.keys(): |
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| 112 | panel = self.plot_panels[group_id] |
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| 113 | self.parent.hide_panel(panel.uid) |
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| 114 | return True |
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| 115 | return False |
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| 116 | |
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| 117 | def create_panel_helper(self, new_panel, data, group_id, title=None): |
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| 118 | """ |
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| 119 | """ |
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| 120 | ## Set group ID if available |
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| 121 | ## Assign data properties to the new create panel |
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| 122 | new_panel.set_manager(self) |
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| 123 | new_panel.group_id = group_id |
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| 124 | if group_id not in data.list_group_id: |
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| 125 | data.list_group_id.append(group_id) |
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| 126 | if title is None: |
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| 127 | title = data.title |
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| 128 | new_panel.window_caption = title |
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| 129 | new_panel.window_name = data.title |
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| 130 | event_id = self.parent.popup_panel(new_panel) |
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| 131 | #remove the default item in the menu |
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| 132 | if len(self.plot_panels) == 0: |
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| 133 | pos = self.menu.FindItem(DEFAULT_MENU_ITEM_LABEL) |
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| 134 | if pos != -1: |
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| 135 | self.menu.Delete(DEFAULT_MENU_ITEM_ID) |
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| 136 | |
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| 137 | self.menu.Append(event_id, new_panel.window_caption, |
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| 138 | "Show %s plot panel" % new_panel.window_caption) |
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| 139 | # Set UID to allow us to reference the panel later |
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| 140 | new_panel.uid = event_id |
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| 141 | # Ship the plottable to its panel |
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| 142 | new_panel.plot_data(data) |
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| 143 | self.plot_panels[new_panel.group_id] = new_panel |
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| 144 | |
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| 145 | |
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| 146 | def create_1d_panel(self, data, group_id): |
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| 147 | """ |
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| 148 | """ |
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| 149 | # Create a new plot panel if none was available |
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| 150 | if issubclass(data.__class__, Data1D): |
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| 151 | from Plotter1D import ModelPanel1D |
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| 152 | ## get the data representation label of the data to plot |
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| 153 | ## when even the user select "change scale" |
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| 154 | xtransform = data.xtransform |
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| 155 | ytransform = data.ytransform |
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| 156 | ## create a plotpanel for 1D Data |
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| 157 | new_panel = ModelPanel1D(self.parent, -1, xtransform=xtransform, |
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| 158 | ytransform=ytransform, style=wx.RAISED_BORDER) |
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| 159 | return new_panel |
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| 160 | |
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| 161 | msg = "1D Panel of group ID %s could not be created" % str(group_id) |
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| 162 | raise ValueError, msg |
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| 163 | |
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| 164 | def create_2d_panel(self, data, group_id): |
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| 165 | """ |
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| 166 | """ |
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| 167 | if issubclass(data.__class__, Data2D): |
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| 168 | ##Create a new plotpanel for 2D data |
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| 169 | from Plotter2D import ModelPanel2D |
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| 170 | scale = data.scale |
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| 171 | new_panel = ModelPanel2D(self.parent, id = -1, |
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| 172 | data2d=data, scale = scale, |
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| 173 | style=wx.RAISED_BORDER) |
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| 174 | return new_panel |
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| 175 | msg = "2D Panel of group ID %s could not be created" % str(group_id) |
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| 176 | raise ValueError, msg |
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| 177 | |
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| 178 | def update_panel(self, data, panel): |
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| 179 | """ |
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| 180 | update the graph of a given panel |
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| 181 | """ |
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| 182 | # Check whether we already have a graph with the same units |
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| 183 | # as the plottable we just received. |
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| 184 | _, x_unit = data.get_xaxis() |
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| 185 | _, y_unit = data.get_yaxis() |
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| 186 | flag_x = (panel.graph.prop["xunit"] is not None) and \ |
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| 187 | (panel.graph.prop["xunit"].strip() != "") and\ |
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| 188 | (x_unit != panel.graph.prop["xunit"]) |
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| 189 | flag_y = (panel.graph.prop["yunit"] is not None) and \ |
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| 190 | (panel.graph.prop["yunit"].strip() != "") and\ |
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| 191 | (x_unit != panel.graph.prop["yunit"]) |
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| 192 | if (flag_x and flag_y): |
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| 193 | msg = "Cannot add %s" % str(data.name) |
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| 194 | msg += " to panel %s\n" % str(panel.window_caption) |
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| 195 | msg += "Please edit %s's units, labels" % str(data.name) |
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| 196 | raise ValueError, msg |
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| 197 | else: |
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| 198 | if panel.group_id not in data.list_group_id: |
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| 199 | data.list_group_id.append(panel.group_id) |
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| 200 | panel.plot_data( data) |
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| 201 | self.parent.show_panel(panel.uid) |
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| 202 | |
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| 203 | def delete_menu_item(self, name, uid): |
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| 204 | """ |
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| 205 | """ |
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| 206 | #remove menu item |
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| 207 | pos = self.menu.FindItem(name) |
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| 208 | if pos != -1: |
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| 209 | self.menu.Delete(uid) |
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| 210 | if self.menu.GetMenuItemCount() == 0: |
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| 211 | self.menu.Append(DEFAULT_MENU_ITEM_ID, DEFAULT_MENU_ITEM_LABEL, |
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| 212 | "No plot available") |
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| 213 | self.menu.FindItemByPosition(0).Enable(False) |
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| 214 | |
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| 215 | def delete_panel(self, group_id): |
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| 216 | """ |
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| 217 | """ |
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| 218 | if group_id in self.plot_panels.keys(): |
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| 219 | panel = self.plot_panels[group_id] |
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| 220 | #remove menu item |
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| 221 | self.delete_menu_item(panel.window_caption, panel.uid) |
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| 222 | del self.plot_panels[group_id] |
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| 223 | return True |
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| 224 | return False |
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| 225 | |
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| 226 | def _on_plot_event(self, event): |
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| 227 | """ |
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| 228 | A new plottable is being shipped to the plotting plug-in. |
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| 229 | Check whether we have a panel to put in on, or create |
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| 230 | a new one |
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| 231 | |
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| 232 | :param event: EVT_NEW_PLOT event |
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| 233 | |
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| 234 | """ |
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| 235 | if hasattr(event, 'action'): |
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| 236 | group_id = event.group_id |
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| 237 | #remove data from panel |
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| 238 | if event.action.lower() == 'remove': |
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| 239 | id = event.id |
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| 240 | return self.remove_plot(group_id, id) |
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| 241 | if event.action.lower() == 'hide': |
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| 242 | return self.hide_panel(group_id) |
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| 243 | if event.action.lower() == 'delete': |
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| 244 | return self.delete_panel(group_id) |
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| 245 | if event.action.lower() == "clear": |
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| 246 | return self.clear_panel_by_id(group_id) |
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| 247 | |
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| 248 | title = None |
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| 249 | if hasattr(event, 'title'): |
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| 250 | title = event.title |
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| 251 | |
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| 252 | data = event.plot |
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| 253 | group_id = data.group_id |
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| 254 | |
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| 255 | if group_id in self.plot_panels.keys(): |
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| 256 | #update a panel graph |
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| 257 | panel = self.plot_panels[group_id] |
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| 258 | self.update_panel(data, panel) |
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| 259 | else: |
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| 260 | #create a new panel |
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| 261 | if issubclass(data.__class__, Data1D): |
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| 262 | new_panel = self.create_1d_panel(data, group_id) |
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| 263 | else: |
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| 264 | new_panel = self.create_2d_panel(data, group_id) |
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| 265 | self.create_panel_helper(new_panel, data, group_id, title) |
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| 266 | |
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| 267 | return |
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| 268 | |
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