source: sasview/src/sas/sasgui/guiframe/local_perspectives/plotting/Plotter1D.py @ 49165488

################################################################################
# This software was developed by the University of Tennessee as part of the
# Distributed Data Analysis of Neutron Scattering Experiments (DANSE)
# project funded by the US National Science Foundation.
#
# See the license text in license.txt
#
# copyright 2008, University of Tennessee
################################################################################


import wx
import sys
import math
import numpy as np
import logging
from sas.sasgui.plottools.PlotPanel import PlotPanel
from sas.sasgui.guiframe.events import StatusEvent
from sas.sasgui.guiframe.events import PanelOnFocusEvent
from sas.sasgui.guiframe.utils import PanelMenu, IdList
from sas.sasgui.guiframe.panel_base import PanelBase
from sas.sasgui.guiframe.gui_style import GUIFRAME_ICON
from appearanceDialog import appearanceDialog
from graphAppearance import graphAppearance

logger = logging.getLogger(__name__)

DEFAULT_QMAX = 0.05
DEFAULT_QSTEP = 0.001
DEFAULT_BEAM = 0.005
BIN_WIDTH = 1
IS_MAC = (sys.platform == 'darwin')


def find_key(dic, val):
    """return the key of dictionary dic given the value"""
    return [k for k, v in dic.iteritems() if v == val][0]

class ModelPanel1D(PlotPanel, PanelBase):
    """
    Plot panel for use with the GUI manager
    """

    ## Internal name for the AUI manager
    window_name = "plotpanel"
    ## Title to appear on top of the window
    window_caption = "Graph"
    ## Flag to tell the GUI manager that this panel is not
    #  tied to any perspective
    ALWAYS_ON = True
    ## Group ID
    group_id = None
    _menu_ids = IdList()

    def __init__(self, parent, id=-1, color=None,
                 dpi=None, style=wx.NO_FULL_REPAINT_ON_RESIZE, **kwargs):
        PlotPanel.__init__(self, parent, id=id, style=style, **kwargs)
        PanelBase.__init__(self, parent)
        ## Reference to the parent window
        self.parent = parent
        if hasattr(parent, "parent"):
            self.parent = self.parent.parent
        ## Plottables
        self.plots = {}
        self.frame = None
        # context menu
        self._slicerpop = None
        self._available_data = []
        self._symbol_labels = self.get_symbol_label()
        self._color_labels = self.get_color_label()
        self.currColorIndex = ""
        self._is_changed_legend_label = False
        self.is_xtick = False
        self.is_ytick = False

        self.hide_menu = None
        ## Unique ID (from gui_manager)
        self.uid = None
        self.x_size = None
        ## Default locations
        # self._default_save_location = os.getcwd()
        self.size = None
        self.vl_ind = 0
        ## Graph
        # self.graph = Graph()
        self.graph.xaxis("\\rm{Q}", 'A^{-1}')
        self.graph.yaxis("\\rm{Intensity} ", "cm^{-1}")
        self.graph.render(self)
        self.cursor_id = None

        # In resizing event
        self.resizing = False
        self.canvas.set_resizing(self.resizing)
        self.Bind(wx.EVT_SIZE, self._OnReSize)
        self.parent.SetFocus()

        # If true, there are 3 qrange bars
        self.is_corfunc = False


    def get_symbol_label(self):
        """
        Associates label to symbol
        """
        _labels = {}
        i = 0
        _labels['Circle'] = i
        i += 1
        _labels['Cross X '] = i
        i += 1
        _labels['Triangle Down'] = i
        i += 1
        _labels['Triangle Up'] = i
        i += 1
        _labels['Triangle Left'] = i
        i += 1
        _labels['Triangle Right'] = i
        i += 1
        _labels['Cross +'] = i
        i += 1
        _labels['Square'] = i
        i += 1
        _labels['diamond'] = i
        i += 1
        _labels['Diamond'] = i
        i += 1
        _labels['Hexagon1'] = i
        i += 1
        _labels['Hexagon2'] = i
        i += 1
        _labels['Pentagon'] = i
        i += 1
        _labels['Line'] = i
        i += 1
        _labels['Dash'] = i
        i += 1
        _labels['Vline'] = i
        i += 1
        _labels['Step'] = i
        return _labels

    def get_color_label(self):
        """
        Associates label to a specific color
        """
        _labels = {}
        i = 0
        _labels['Blue'] = i
        i += 1
        _labels['Green'] = i
        i += 1
        _labels['Red'] = i
        i += 1
        _labels['Cyan'] = i
        i += 1
        _labels['Magenta'] = i
        i += 1
        _labels['Yellow'] = i
        i += 1
        _labels['Black'] = i
        return _labels


    def set_data(self, list=None):
        """
        """
        pass

    def _reset(self):
        """
        Resets internal data and graph
        """
        self.graph.reset()
        self.plots = {}
        self.is_zoomed = False

    def _OnReSize(self, event):
        """
        On response of the resize of a panel, set axes_visiable False
        """
        # It was found that wx >= 2.9.3 sends an event even if no size changed.
        # So manually recode the size (=x_size) and compare here.
        # Massy code to work around:<
        if self.parent._mgr != None:
            max_panel = self.parent._mgr.GetPane(self)
            if max_panel.IsMaximized():
                self.parent._mgr.RestorePane(max_panel)
                max_panel.Maximize()
        if self.x_size != None:
            if self.x_size == self.GetSize():
                self.resizing = False
                self.canvas.set_resizing(self.resizing)
                return
        self.x_size = self.GetSize()

        # Ready for another event
        # Do not remove this Skip. Otherwise it will get runtime error on wx>=2.9.
        event.Skip()
        # set the resizing flag
        self.resizing = True
        self.canvas.set_resizing(self.resizing)
        self.parent.set_schedule(True)
        pos_x, pos_y = self.GetPositionTuple()
        if pos_x != 0 and pos_y != 0:
            self.size, _ = self.GetClientSizeTuple()
        self.SetSizer(self.sizer)
        wx.CallAfter(self.parent.disable_app_menu, self)

    def on_plot_qrange(self, event=None):
        """
        On Qmin Qmax vertical line event
        """
        if event == None:
            return
        event.Skip()
        active_ctrl = event.active
        if active_ctrl == None:
            return
        if hasattr(event, 'is_corfunc'):
            self.is_corfunc = event.is_corfunc
        if event.id in self.plots.keys():
            ctrl = event.ctrl
            self.cursor_id = event.id
            # Set line position and color
            colors = ['red', 'purple']
            x_data = self.plots[self.cursor_id].x
            values = [max(x_data.min(), float(ctrl[0].GetValue())),
                      min(x_data.max(), float(ctrl[1].GetValue()))]
            if len(ctrl) == 3:
                colors.append('purple')
                values.append(min(x_data.max(), float(ctrl[2].GetValue())))
            if self.ly == None:
                self.ly = []
                for c, v in zip(colors, values):
                    h = self.subplot.axvline(x=v, color=c, lw=2.5, alpha=0.7)
                    h.set_rasterized(True)
                    self.ly.append(h)
            try:
                # Display x,y in the status bar if possible
                xval = float(active_ctrl.GetValue())
                position = self.get_data_xy_vals(xval)
                if position != None and not self.is_corfunc:
                    wx.PostEvent(self.parent, StatusEvent(status=position))
            except:
                logger.error(sys.exc_value)
            if not event.leftdown:
                # text event
                try:
                    is_moved = False
                    for h, v in zip(self.ly, values):
                        # check if vline moved
                        if h.get_xdata() != v:
                            h.set_xdata(v)
                            is_moved = True
                    if is_moved:
                        self.canvas.draw()
                except:
                    logger.error(sys.exc_value)
                event.Skip()
                return
            self.q_ctrl = ctrl
            for h, c, v in zip(self.ly, colors, values):
                h.set_color(c)
                h.set_xdata(v)
            self.canvas.draw()
        else:
            self.q_ctrl = None

    def get_data_xy_vals(self, xval):
        """
        Get x, y data values near x = x_val
        """
        try:
            x_data = self.plots[self.cursor_id].x
            y_data = self.plots[self.cursor_id].y
            indx = self._find_nearest(x_data, xval)
            pos_x = x_data[indx]
            pos_y = y_data[indx]
            position = str(pos_x), str(pos_y)
            return position
        except:
            return None

    def _find_nearest(self, array, value):
        """
        Find and return the nearest value in array to the value.
        Used in cusor_line()
        :Param array: numpy array
        :Param value: float
        """
        idx = (np.abs(array - value)).argmin()
        return int(idx)  # array.flat[idx]

    def _check_line_positions(self, pos_x=None, nop=None):
        """
        Check vertical line positions
        :Param pos_x: position of the current line [float]
        :Param nop: number of plots [int]
        """
        ly = self.ly
        ly0x = ly[0].get_xdata()
        ly1x = ly[1].get_xdata()
        ly2x = None
        if self.is_corfunc: ly2x = ly[2].get_xdata()
        self.q_ctrl[0].SetBackgroundColour('white')
        self.q_ctrl[1].SetBackgroundColour('white')
        if ly0x >= ly1x:
            if self.vl_ind == 0:
                ly[1].set_xdata(pos_x)
                ly[1].set_zorder(nop)
                self.q_ctrl[1].SetValue(str(pos_x))
                self.q_ctrl[0].SetBackgroundColour('pink')
            elif self.vl_ind == 1:
                ly[0].set_xdata(pos_x)
                ly[0].set_zorder(nop)
                self.q_ctrl[0].SetValue(str(pos_x))
                self.q_ctrl[1].SetBackgroundColour('pink')
        elif ly2x is not None and ly1x >= ly2x:
            if self.vl_ind == 1:
                ly[2].set_xdata(posx)
                ly[2].set_zorder(nop)
                self.q_ctrl[2].SetValue(str(pos_x))
            elif self.vl_ind == 2:
                ly[1].set_xdata(posx)
                ly[1].set_zorder(nop)
                self.q_ctrl[1].SetValue(str(pos_x))


    def _get_cusor_lines(self, event):
        """
        Revmove or switch cursor line if drawn
        :Param event: LeftClick mouse event
        """
        ax = event.inaxes
        if hasattr(event, "action"):
            dclick = event.action == 'dclick'
            if ax == None or dclick:
                # remove the vline
                self._check_zoom_plot()
                self.canvas.draw()
                self.q_ctrl = None
                return
        if self.ly != None and event.xdata != None:
            # Selecting a new line if cursor lines are displayed already
            dqmin = math.fabs(event.xdata - self.ly[0].get_xdata())
            dqmax = math.fabs(event.xdata - self.ly[1].get_xdata())
            if not self.is_corfunc:
                is_qmax = dqmin > dqmax
                if is_qmax:
                    self.vl_ind = 1
                else:
                    self.vl_ind = 0
            else:
                dqmax2 = math.fabs(event.xdata - self.ly[2].get_xdata())
                closest = min(dqmin, dqmax, dqmax2)
                self.vl_ind = { dqmin: 0, dqmax: 1, dqmax2: 2 }.get(closest)

    def cusor_line(self, event):
        """
        Move the cursor line to write Q range
        """
        if self.q_ctrl == None:
            return
        # release a q range vline
        if self.ly != None and not self.leftdown:
            for ly in self.ly:
                ly.set_alpha(0.7)
                self.canvas.draw()
            return
        ax = event.inaxes
        if ax == None or not hasattr(event, 'action'):
            return
        end_drag = event.action != 'drag' and event.xdata != None
        nop = len(self.plots)
        pos_x, _ = float(event.xdata), float(event.ydata)
        try:
            ly = self.ly
            ly0x = ly[0].get_xdata()
            ly1x = ly[1].get_xdata()
            if ly0x == ly1x:
                if ly[0].get_zorder() > ly[1].get_zorder():
                    self.vl_ind = 0
                else:
                    self.vl_ind = 1
            vl_ind = self.vl_ind
            x_data = self.plots[self.cursor_id].x
            xmin = x_data.min()
            xmax = x_data.max()
            indx = self._find_nearest(x_data, pos_x)
            # Need to hold LeftButton to drag
            if end_drag:
                if event.button:
                    self._check_line_positions(pos_x, nop)
                return
            if indx >= len(x_data):
                indx = len(x_data) - 1
            pos_x = x_data[indx]
            if xmin == ly1x:
                vl_ind = 1
            elif xmax == ly0x:
                vl_ind = 0
            else:
                ly[vl_ind].set_xdata(pos_x)
                ly[vl_ind].set_zorder(nop + 1)
                self._check_line_positions(pos_x, nop)
            ly[vl_ind].set_xdata(pos_x)
            ly[vl_ind].set_alpha(1.0)
            ly[vl_ind].set_zorder(nop + 1)
            self.canvas.draw()
            self.q_ctrl[vl_ind].SetValue(str(pos_x))
        except:
            logger.error(sys.exc_value)

    def set_resizing(self, resizing=False):
        """
        Set the resizing (True/False)
        """
        self.resizing = resizing
        # self.canvas.set_resizing(resizing)

    def schedule_full_draw(self, func='append'):
        """
        Put self in schedule to full redraw list
        """
        # append/del this panel in the schedule list
        self.parent.set_schedule_full_draw(self, func)

    def remove_data_by_id(self, id):
        """
            Remove data from plot
        """
        if id in self.plots.keys():
            data = self.plots[id]
            self.graph.delete(data)
            data_manager = self._manager.parent.get_data_manager()
            data_list, theory_list = data_manager.get_by_id(id_list=[id])

            if id in data_list.keys():
                data = data_list[id]
            if id in theory_list.keys():
                data = theory_list[id]

            del self.plots[id]
            self.graph.render(self)
            self.subplot.figure.canvas.draw_idle()
            if len(self.graph.plottables) == 0:
                # onRemove: graph is empty must be the panel must be destroyed
                self.parent.delete_panel(self.uid)

    def plot_data(self, data):
        """
        Data is ready to be displayed

        :param event: data event
        """
        if data.__class__.__name__ == 'Data2D':
            return
        plot_keys = self.plots.keys()
        if data.id in plot_keys:
            # Recover panel prop.s
            xlo, xhi = self.subplot.get_xlim()
            ylo, yhi = self.subplot.get_ylim()
            old_data = self.plots[data.id]
            if self._is_changed_legend_label:
                data.label = old_data.label
            if old_data.__class__.__name__ == 'Data1D':
                data.custom_color = old_data.custom_color
                data.symbol = old_data.symbol
                data.markersize = old_data.markersize
                data.zorder = len(plot_keys)
            # Replace data
            self.graph.replace(data)
            self.plots[data.id] = data
            ## Set the view scale for all plots
            try:
                self._onEVT_FUNC_PROPERTY()
            except Exception, exc:
                wx.PostEvent(self.parent,
                             StatusEvent(status="Plotting Error: %s" % str(exc), info="error"))
            if self.is_zoomed:
                # Recover the x,y limits
                self.subplot.set_xlim((xlo, xhi))
                self.subplot.set_ylim((ylo, yhi))
        else:
            self.plots[data.id] = data
            self.graph.add(self.plots[data.id])
            data.zorder = len(plot_keys)
            ## Set the view scale for all plots
            try:
                self._onEVT_FUNC_PROPERTY()
                if IS_MAC:
                    # MAC: forcing to plot 2D avg
                    self.canvas._onDrawIdle()
            except Exception, exc:
                wx.PostEvent(self.parent, StatusEvent(status=\
                    "Plotting Error: %s" % str(exc), info="error"))
            self.toolbar.update()
            self.is_zoomed = False

    def draw_plot(self):
        """
        Draw plot
        """
        self.draw()

    def onLeftDown(self, event):
        """
        left button down and ready to drag
        Display the position of the mouse on the statusbar
        """
        # self.parent.set_plot_unfocus()
        self._get_cusor_lines(event)
        ax = event.inaxes
        PlotPanel.onLeftDown(self, event)
        if ax != None:
            try:
                pos_x = float(event.xdata)  # / size_x
                pos_y = float(event.ydata)  # / size_y
                pos_x = "%8.3g" % pos_x
                pos_y = "%8.3g" % pos_y
                self.position = str(pos_x), str(pos_y)
                wx.PostEvent(self.parent, StatusEvent(status=self.position))
            except:
                self.position = None
        # unfocus all
        self.parent.set_plot_unfocus()
        # post nd event to notify guiframe that this panel is on focus
        wx.PostEvent(self.parent, PanelOnFocusEvent(panel=self))


    def _ontoggle_hide_error(self, event):
        """
        Toggle error display to hide or show
        """
        menu = event.GetEventObject()
        event_id = event.GetId()
        self.set_selected_from_menu(menu, event_id)
        # Check zoom
        xlo, xhi = self.subplot.get_xlim()
        ylo, yhi = self.subplot.get_ylim()

        selected_plot = self.plots[self.graph.selected_plottable]
        if self.hide_menu.GetText() == "Hide Error Bar":
            selected_plot.hide_error = True
        else:
            selected_plot.hide_error = False
        ## increment graph color
        self.graph.render(self)
        self.subplot.figure.canvas.draw_idle()
        if self.is_zoomed:
            # Recover the x,y limits
            self.subplot.set_xlim((xlo, xhi))
            self.subplot.set_ylim((ylo, yhi))
        self.graph.selected_plottable = None


    def _onRemove(self, event):
        """
        Remove a plottable from the graph and render the graph

        :param event: Menu event

        """
        menu = event.GetEventObject()
        event_id = event.GetId()
        self.set_selected_from_menu(menu, event_id)
        ## Check if there is a selected graph to remove
        if self.graph.selected_plottable in self.plots.keys():
            graph_id = self.graph.selected_plottable
            self.remove_data_by_id(graph_id)

    def onContextMenu(self, event):
        """
        1D plot context menu

        :param event: wx context event

        """
        self._slicerpop = PanelMenu()
        self._slicerpop.set_plots(self.plots)
        self._slicerpop.set_graph(self.graph)
        ids = iter(self._menu_ids)

        # Various plot options
        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Save Image', 'Save image as PNG')
        wx.EVT_MENU(self, wx_id, self.onSaveImage)
        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Print Image', 'Print image ')
        wx.EVT_MENU(self, wx_id, self.onPrint)

        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Copy to Clipboard',
                               'Copy to the clipboard')
        wx.EVT_MENU(self, wx_id, self.OnCopyFigureMenu)

        self._slicerpop.AppendSeparator()

        for plot in self.plots.values():
            # title = plot.title
            name = plot.name
            plot_menu = wx.Menu()
            if self.graph.selected_plottable:
                if not self.graph.selected_plottable in self.plots.keys():
                    continue
                if plot != self.plots[self.graph.selected_plottable]:
                    continue

            wx_id = ids.next()
            plot_menu.Append(wx_id, "&DataInfo", name)
            wx.EVT_MENU(self, wx_id, self. _onDataShow)
            wx_id = ids.next()
            plot_menu.Append(wx_id, "&Save Points as a File", name)
            wx.EVT_MENU(self, wx_id, self._onSave)
            plot_menu.AppendSeparator()

            # add menu of other plugins
            item_list = self.parent.get_current_context_menu(self)
            if (not item_list == None) and (not len(item_list) == 0):
                for item, wx_id in zip(item_list, [ids.next() for i in range(len(item_list))]):

                    try:
                        plot_menu.Append(wx_id, item[0], name)
                        wx.EVT_MENU(self, wx_id, item[2])
                    except:
                        msg = "ModelPanel1D.onContextMenu: "
                        msg += "bad menu item  %s" % sys.exc_value
                        wx.PostEvent(self.parent, StatusEvent(status=msg))
                plot_menu.AppendSeparator()

            if self.parent.ClassName.count('wxDialog') == 0:
                if plot.id != 'fit':
                    wx_id = ids.next()
                    plot_menu.Append(wx_id, '&Linear Fit', name)
                    wx.EVT_MENU(self, wx_id, self.onFitting)
                    plot_menu.AppendSeparator()

                wx_id = ids.next()
                plot_menu.Append(wx_id, "Remove", name)
                wx.EVT_MENU(self, wx_id, self._onRemove)
                if not plot.is_data:
                    wx_id = ids.next()
                    plot_menu.Append(wx_id, '&Freeze', name)
                    wx.EVT_MENU(self, wx_id, self.onFreeze)
                plot_menu.AppendSeparator()

                if plot.is_data:
                    wx_id = ids.next()
                    self.hide_menu = plot_menu.Append(wx_id, "Hide Error Bar", name)

                    if plot.dy is not None and plot.dy != []:
                        if plot.hide_error:
                            self.hide_menu.SetText('Show Error Bar')
                        else:
                            self.hide_menu.SetText('Hide Error Bar')
                    else:
                        self.hide_menu.Enable(False)
                    wx.EVT_MENU(self, wx_id, self._ontoggle_hide_error)

                    plot_menu.AppendSeparator()

                wx_id = ids.next()
                plot_menu.Append(wx_id, '&Modify Plot Property', name)
                wx.EVT_MENU(self, wx_id, self.createAppDialog)
            wx_id = ids.next()
            # plot_menu.SetTitle(name)
            self._slicerpop.AppendMenu(wx_id, '&%s' % name, plot_menu)
            # Option to hide
            # TODO: implement functionality to hide a plottable (legend click)

        self._slicerpop.AppendSeparator()
        loc_menu = wx.Menu()
        for label in self._loc_labels:
            wx_id = ids.next()
            loc_menu.Append(wx_id, str(label), str(label))
            wx.EVT_MENU(self, wx_id, self.onChangeLegendLoc)

        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Modify Graph Appearance',
                               'Modify graph appearance')
        wx.EVT_MENU(self, wx_id, self.modifyGraphAppearance)
        self._slicerpop.AppendSeparator()


        if self.position != None:
            wx_id = ids.next()
            self._slicerpop.Append(wx_id, '&Add Text')
            wx.EVT_MENU(self, wx_id, self._on_addtext)
            wx_id = ids.next()
            self._slicerpop.Append(wx_id, '&Remove Text')
            wx.EVT_MENU(self, wx_id, self._on_removetext)
            self._slicerpop.AppendSeparator()
        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Change Scale')
        wx.EVT_MENU(self, wx_id, self._onProperties)
        self._slicerpop.AppendSeparator()
        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Set Graph Range')
        wx.EVT_MENU(self, wx_id, self.onSetRange)
        wx_id = ids.next()
        self._slicerpop.Append(wx_id, '&Reset Graph Range')
        wx.EVT_MENU(self, wx_id, self.onResetGraph)

        if self.parent.ClassName.count('wxDialog') == 0:
            self._slicerpop.AppendSeparator()
            wx_id = ids.next()
            self._slicerpop.Append(wx_id, '&Window Title')
            wx.EVT_MENU(self, wx_id, self.onChangeCaption)
        try:
            pos_evt = event.GetPosition()
            pos = self.ScreenToClient(pos_evt)
        except:
            pos_x, pos_y = self.toolbar.GetPositionTuple()
            pos = (pos_x, pos_y + 5)
        self.PopupMenu(self._slicerpop, pos)

    def onSetRange(self, event):
        # Display dialog
        # self.subplot.set_xlim((low, high))
        # self.subplot.set_ylim((low, high))
        from sas.sasgui.plottools.RangeDialog import RangeDialog
        d = RangeDialog(self, -1)
        xlim = self.subplot.get_xlim()
        ylim = self.subplot.get_ylim()
        d.SetXRange(xlim)
        d.SetYRange(ylim)
        if d.ShowModal() == wx.ID_OK:
            x_range = d.GetXRange()
            y_range = d.GetYRange()
            if x_range is not None and y_range is not None:
                self.subplot.set_xlim(x_range)
                self.subplot.set_ylim(y_range)
                self.subplot.figure.canvas.draw_idle()
                self.is_zoomed = True
        d.Destroy()

    def onFreeze(self, event):
        """
        on Freeze data
        """
        menu = event.GetEventObject()
        wx_id = event.GetId()
        self.set_selected_from_menu(menu, wx_id)
        plot = self.plots[self.graph.selected_plottable]
        self.parent.onfreeze([plot.id])

    def _onSave(self, evt):
        """
        Save a data set to a text file

        :param evt: Menu event

        """
        menu = evt.GetEventObject()
        event_id = evt.GetId()
        self.set_selected_from_menu(menu, event_id)
        data = self.plots[self.graph.selected_plottable]
        default_name = data.label
        if default_name.count('.') > 0:
            default_name = default_name.split('.')[0]
        default_name += "_out"
        if self.parent != None:
            self.parent.save_data1d(data, default_name)

    def _onDataShow(self, evt):
        """
        Show the data set in text

        :param evt: Menu event

        """
        menu = evt.GetEventObject()
        event_id = evt.GetId()
        self.set_selected_from_menu(menu, event_id)
        data = self.plots[self.graph.selected_plottable]
        default_name = data.label
        if default_name.count('.') > 0:
            default_name = default_name.split('.')[0]
        # default_name += "_out"
        if self.parent != None:
            self.parent.show_data1d(data, default_name)

    def _on_hide(self, event):
        """
        Hides the plot when button is pressed
        """
        if self.parent is not None:
            self.parent.hide_panel(self.uid)

    def on_close(self, event):
        """
        On Close Event
        """
        ID = self.uid
        self.parent.delete_panel(ID)

    def createAppDialog(self, event):
        """
        Create the custom dialog for fit appearance modification
        """
        menu = event.GetEventObject()
        event_id = event.GetId()
        self.set_selected_from_menu(menu, event_id)
        self.appearance_selected_plot = \
                        self.plots[self.graph.selected_plottable]
        # find current properties
        curr_color = self.appearance_selected_plot.custom_color
        curr_symbol = self.appearance_selected_plot.symbol
        curr_size = self.appearance_selected_plot.markersize
        curr_label = self.appearance_selected_plot.label

        if curr_color == None:
            curr_color = self._color_labels['Blue']
            curr_symbol = 13

        self.appD = appearanceDialog(self, 'Modify Plot Property')
        icon = self.parent.GetIcon()
        self.appD.SetIcon(icon)
        self.appD.set_defaults(float(curr_size), int(curr_color),
                               str(appearanceDialog.find_key(self.get_symbol_label(),
                                                             int(curr_symbol))), curr_label)
        self.appD.Bind(wx.EVT_CLOSE, self.on_AppDialog_close)
        self.graph.selected_plottable = None

    def on_AppDialog_close(self, event):
        """
        on_Modify Plot Property_close
        """
        if self.appD.okay_clicked == True:
            info = self.appD.get_current_values()
            self.appearance_selected_plot.custom_color = \
                        self._color_labels[info[1].encode('ascii', 'ignore')]

            self.appearance_selected_plot.markersize = float(info[0])
            self.appearance_selected_plot.symbol = \
                        self.get_symbol_label()[info[2]]
            self.appearance_selected_plot.label = str(info[3])
        self.appD.Destroy()
        self._check_zoom_plot()

    def modifyGraphAppearance(self, event):
        """
        On Modify Graph Appearance
        """
        self.graphApp = graphAppearance(self, 'Modify Graph Appearance')
        icon = self.parent.GetIcon()
        self.graphApp.SetIcon(icon)
        self.graphApp.setDefaults(self.grid_on, self.legend_on,
                                  self.xaxis_label, self.yaxis_label,
                                  self.xaxis_unit, self.yaxis_unit,
                                  self.xaxis_font, self.yaxis_font,
                                  find_key(self.get_loc_label(), self.legendLoc),
                                  self.xcolor, self.ycolor,
                                  self.is_xtick, self.is_ytick)
        self.graphApp.Bind(wx.EVT_CLOSE, self.on_graphApp_close)

    def on_graphApp_close(self, event):
        """
        Gets values from graph appearance dialog and sends them off
        to modify the plot
        """
        graph_app = self.graphApp
        toggle_grid = graph_app.get_togglegrid()
        legend_loc = graph_app.get_legend_loc()
        toggle_legend = graph_app.get_togglelegend()

        self.onGridOnOff(toggle_grid)
        self.ChangeLegendLoc(legend_loc)
        self.onLegend(toggle_legend)

        self.xaxis_label = graph_app.get_xlab()
        self.yaxis_label = graph_app.get_ylab()
        self.xaxis_unit = graph_app.get_xunit()
        self.yaxis_unit = graph_app.get_yunit()
        self.xaxis_font = graph_app.get_xfont()
        self.yaxis_font = graph_app.get_yfont()
        self.is_xtick = graph_app.get_xtick_check()
        self.is_ytick = graph_app.get_ytick_check()
        if self.is_xtick:
            self.xaxis_tick = self.xaxis_font
        if self.is_ytick:
            self.yaxis_tick = self.yaxis_font

        self.xaxis(self.xaxis_label, self.xaxis_unit,
                   graph_app.get_xfont(), graph_app.get_xcolor(),
                   self.xaxis_tick)
        self.yaxis(self.yaxis_label, self.yaxis_unit,
                   graph_app.get_yfont(), graph_app.get_ycolor(),
                   self.yaxis_tick)

        graph_app.Destroy()