Geografic-Information-System/gui/wxpython/wxplot/dialogs.py

"""
@package wxplot.dialogs

@brief Dialogs for different plotting routines

Classes:
 - dialogs::ProfileRasterDialog
 - dialogs::ScatterRasterDialog
 - dialogs::PlotStatsFrame
 - dialogs::HistRasterDialog
 - dialogs::TextDialog
 - dialogs::OptDialog

(C) 2011-2016 by the GRASS Development Team

This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.

@author Michael Barton, Arizona State University
"""

import os

import wx
import wx.lib.colourselect  as csel
import wx.lib.scrolledpanel as scrolled

from core             import globalvar
from core.settings    import UserSettings
from core.globalvar   import ICONDIR
from core.utils import _
from gui_core.gselect import Select

from grass.script import core  as grass

class ProfileRasterDialog(wx.Dialog):
    def __init__(self, parent, id = wx.ID_ANY, 
                 title = _("Select raster maps to profile"),
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs):
        """Dialog to select raster maps to profile.
        """

        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)


        self.parent = parent
        self.colorList = ["blue", "red", "green", "yellow", "magenta", "cyan", \
                    "aqua", "black", "grey", "orange", "brown", "purple", "violet", \
                    "indigo"]

        self.rasterList = self.parent.rasterList
        
        self._do_layout()
        
    def _do_layout(self):

        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.GridBagSizer (hgap = 3, vgap = 3)
        
        rastText = ''
        for r in self.rasterList:
            rastText += '%s,' % r
            
        rastText = rastText.rstrip(',')
        
        txt = _("Select raster map(s) to profile:")
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = txt)
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
        
        selection = Select(self, id = wx.ID_ANY,
                           size = globalvar.DIALOG_GSELECT_SIZE,
                           type = 'cell', multiple=True)
        selection.SetValue(rastText)
        selection.Bind(wx.EVT_TEXT, self.OnSelection)
        
        box.Add(item = selection, pos = (0, 1))
            
        sizer.Add(item = box, proportion = 0,
                  flag = wx.ALL, border = 10)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 5)

        btnsizer = wx.StdDialogButtonSizer()

        btn = wx.Button(self, wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)

        btn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()

        sizer.Add(item = btnsizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def OnSelection(self, event):
        """Choose maps to profile. Convert these into a list
        """
        self.rasterList = self.FindWindowById(event.GetId()).GetValue().split(',')

class ScatterRasterDialog(wx.Dialog):
    def __init__(self, parent, id = wx.ID_ANY, 
                 title = _("Select pairs of raster maps for scatterplots"),
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs):
        """Dialog to select raster maps to profile.
        """

        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)

        self.parent = parent 
        self.rasterList = self.parent.rasterList
        self.bins = self.parent.bins
        self.scattertype = self.parent.scattertype
        self.maptype = self.parent.maptype
        self.spinbins = ''        
        self.colorList = ["blue", "red", "green", "yellow", "magenta", "cyan", \
                    "aqua", "black", "grey", "orange", "brown", "purple", "violet", \
                    "indigo"]
        
        self._do_layout()
        
    def _do_layout(self):

        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.GridBagSizer (hgap = 3, vgap = 3)
        
        # parse raster pair tuples 
        rastText = ''
        if len(self.rasterList) > 0:
            for r in self.rasterList:
                if isinstance(r, tuple):
                    rastText += '%s,%s,' % r
                else:
                    rastText += '%s,' % r
            rastText = rastText.rstrip(',')
        
        # select rasters
        txt = _("Select pairs of raster maps for bivariate scatterplots:")
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = txt)
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
        
        selection = Select(self, id = wx.ID_ANY,
                           size = globalvar.DIALOG_GSELECT_SIZE,
                           type = 'cell', multiple=True)
        selection.SetValue(rastText)
        selection.Bind(wx.EVT_TEXT, self.OnSelection)
        
        box.Add(item = selection, pos = (0, 1))
            
        # Nsteps for FP maps 
        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
                              label = _("Number of bins (for FP maps)"))
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
        self.spinbins = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", pos = (30, 50),
                                      size = (100,-1), style = wx.SP_ARROW_KEYS)
        self.spinbins.SetRange(1,1000)
        self.spinbins.SetValue(self.bins)
        box.Add(item = self.spinbins,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 1))

#### TODO possibly make bubble plots with marker size proportional to cell counts
#        # scatterplot type 
#        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
#                              label = _("Scatterplot type"))
#        box.Add(item = label,
#                flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
#        types = ['normal', 'bubble']
#        scattertype = wx.ComboBox(parent = self, id = wx.ID_ANY, size = (250, -1),
#                                choices = types, style = wx.CB_DROPDOWN)
#        scattertype.SetStringSelection(self.scattertype)
#        box.Add(item = scattertype,
#                flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 1))
          
        sizer.Add(item = box, proportion = 0,
                  flag = wx.ALL, border = 10)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 5)

        btnsizer = wx.StdDialogButtonSizer()

        btn = wx.Button(self, wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)

        btn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()

        sizer.Add(item = btnsizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        self.spinbins.Bind(wx.EVT_TEXT, self.OnSetBins)
        self.spinbins.Bind(wx.EVT_SPINCTRL, self.OnSetBins)
#        scattertype.Bind(wx.EVT_TEXT, self.OnSetScattertypes)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def OnSelection(self, event):
        """Select raster maps for scatterplot. Must select maps in pairs.
        """
        self.rasterList = self.FindWindowById(event.GetId()).GetValue().split(',', 1)
        
    def OnSetBins(self, event):
        """Bins for histogramming FP maps (=nsteps in r.stats)
        """
        self.bins = self.spinbins.GetValue()
        
    def OnSetScattertypes(self, event):
        self.scattertype = event.GetString()
        
    def GetRasterPairs(self):
        """Get raster pairs"""
        pairsList = list()
        pair = list()
        for r in self.rasterList:
            pair.append(r)
            if len(pair) == 2:
                pairsList.append(tuple(pair))
                pair = list()
        
        return list(pairsList)
    
    def GetSettings(self):
        """Get type and bins"""
        return self.scattertype, self.bins
    
class PlotStatsFrame(wx.Frame):
    def __init__(self, parent, id, message = '', title = '',
                 style = wx.DEFAULT_FRAME_STYLE, **kwargs):
        """Dialog to display and save statistics for plots
        """
        wx.Frame.__init__(self, parent, id, style = style, **kwargs)
        self.SetLabel(_("Statistics"))
        self.SetIcon(wx.Icon(os.path.join(ICONDIR, 'grass.ico'), wx.BITMAP_TYPE_ICO))
        self.panel = wx.Panel(self)
        
        sp = scrolled.ScrolledPanel(self.panel, -1, size=(400, 400),
                                    style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="Statistics" )
                

        #
        # initialize variables
        #
        self.parent = parent
        self.message = message 
        self.title = title   
        self.CenterOnParent()  
        
        #
        # Display statistics
        #
        sizer = wx.BoxSizer(wx.VERTICAL)
        txtSizer = wx.BoxSizer(wx.VERTICAL)

        statstitle = wx.StaticText(parent = self.panel, id = wx.ID_ANY, label = self.title)
        sizer.Add(item = statstitle, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 3)
        line = wx.StaticLine(parent = self.panel, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 3)
        for stats in self.message:
            statstxt = wx.StaticText(parent = sp, id = wx.ID_ANY, label = stats)
            statstxt.SetBackgroundColour("WHITE")
            txtSizer.Add(item = statstxt, proportion = 1, 
                         flag = wx.EXPAND|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 3)
            line = wx.StaticLine(parent = sp, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL) 
            txtSizer.Add(item = line, proportion = 0,
                         flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.ALL, border = 3)      

        sp.SetSizer(txtSizer)
        sp.SetAutoLayout(1)
        sp.SetupScrolling() 

        sizer.Add(item = sp, proportion = 1, 
                  flag = wx.GROW | wx.LEFT | wx.RIGHT | wx.BOTTOM, border = 3)

        line = wx.StaticLine(parent = self.panel, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW |wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 3)

        #
        # buttons
        #
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)

        btn_clipboard = wx.Button(self.panel, id = wx.ID_COPY, label = _('C&opy'))
        btn_clipboard.SetToolTipString(_("Copy regression statistics the clipboard (Ctrl+C)"))
        btnSizer.Add(item = btn_clipboard, proportion = 0, flag = wx.ALIGN_LEFT | wx.ALL, border = 5)
        
        btnCancel = wx.Button(self.panel, wx.ID_CLOSE)
        btnCancel.SetDefault()
        btnSizer.Add(item = btnCancel, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)        

        sizer.Add(item = btnSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        # bindings
        btnCancel.Bind(wx.EVT_BUTTON, self.OnClose)
        btn_clipboard.Bind(wx.EVT_BUTTON, self.OnCopy)
        
        self.panel.SetSizer(sizer)
        sizer.Fit(self)

    def OnCopy(self, event):
        """Copy the regression stats to the clipboard
        """
        str = self.title + '\n'
        for item in self.message:
            str += item
            
        rdata = wx.TextDataObject()
        rdata.SetText(str)
        
        if wx.TheClipboard.Open():
            wx.TheClipboard.SetData(rdata)
            wx.TheClipboard.Close()
            wx.MessageBox(_("Regression statistics copied to clipboard"))
        
    def OnClose(self, event):
        """Button 'Close' pressed
        """
        self.Close(True)

class HistRasterDialog(wx.Dialog):
    def __init__(self, parent, id = wx.ID_ANY, 
                 title = _("Select raster map or imagery group to histogram"),
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs):
        """Dialog to select raster maps to histogram.
        """

        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)

        self.parent = parent
        self.rasterList = self.parent.rasterList
        self.group = self.parent.group
        self.bins = self.parent.bins
        self.histtype = self.parent.histtype
        self.maptype = self.parent.maptype
        self.spinbins = ''
        
        self._do_layout()
        
    def _do_layout(self):

        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.GridBagSizer (hgap = 3, vgap = 3)
        
        #
        # select single raster or image group to histogram radio buttons
        #
        self.rasterRadio = wx.RadioButton(self, id = wx.ID_ANY, label = " %s " % _("Histogram single raster"), style = wx.RB_GROUP)
        self.groupRadio = wx.RadioButton(self, id = wx.ID_ANY, label = " %s " % _("Histogram imagery group"))
        if self.maptype == 'raster': 
            self.rasterRadio.SetValue(True)
        elif self.maptype == 'group': 
            self.groupRadio.SetValue(True)
        box.Add(item = self.rasterRadio, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
        box.Add(item = self.groupRadio, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 1))
        
        #
        # Select a raster to histogram
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
                              label = _("Select raster map:"))
        box.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
        self.rselection = Select(self, id = wx.ID_ANY,
                                 size = globalvar.DIALOG_GSELECT_SIZE,
                                 type = 'cell')
        if self.groupRadio.GetValue() == True: 
            self.rselection.Disable()
        else:
            rastText = ''
            for r in self.rasterList:
                rastText += '%s,' % r
            rastText = rastText.rstrip(',')
            self.rselection.SetValue(rastText)
        box.Add(item = self.rselection, pos = (1, 1))       

        #
        # Select an image group to histogram
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
                              label = _("Select image group:"))
        box.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
        self.gselection = Select(self, id = wx.ID_ANY,
                                 size = globalvar.DIALOG_GSELECT_SIZE,
                                 type = 'group')
        if self.rasterRadio.GetValue() == True: 
            self.gselection.Disable()
        else:
            if self.group != None: self.gselection.SetValue(self.group)
        box.Add(item = self.gselection, pos = (2, 1))
            
        #
        # Nsteps for FP maps and histogram type selection
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
                              label = _("Number of bins (for FP maps)"))
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (3, 0))
        self.spinbins = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", pos = (30, 50),
                                      size = (100,-1), style = wx.SP_ARROW_KEYS)
        self.spinbins.SetRange(1,1000)
        self.spinbins.SetValue(self.bins)
        box.Add(item = self.spinbins,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (3, 1))

        label = wx.StaticText(parent = self, id = wx.ID_ANY, 
                              label = _("Histogram type"))
        box.Add(item = label,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (4, 0))
        types = ['count', 'percent', 'area']
        histtype = wx.ComboBox(parent = self, id = wx.ID_ANY, size = (250, -1),
                                choices = types, style = wx.CB_DROPDOWN)
        histtype.SetStringSelection(self.histtype)
        box.Add(item = histtype,
                flag = wx.ALIGN_CENTER_VERTICAL, pos = (4, 1))
          
        sizer.Add(item = box, proportion = 0,
                  flag = wx.ALL, border = 10)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 5)

        btnsizer = wx.StdDialogButtonSizer()

        btn = wx.Button(self, wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)

        btn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()

        sizer.Add(item = btnsizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        #
        # bindings
        #
        self.Bind(wx.EVT_RADIOBUTTON, self.OnHistMap, self.rasterRadio)
        self.Bind(wx.EVT_RADIOBUTTON, self.OnHistMap, self.groupRadio)
        self.rselection.Bind(wx.EVT_TEXT, self.OnRasterSelection)
        self.gselection.Bind(wx.EVT_TEXT, self.OnGroupSelection)
        self.spinbins.Bind(wx.EVT_TEXT, self.OnSetBins)
        self.spinbins.Bind(wx.EVT_SPINCTRL, self.OnSetBins)
        histtype.Bind(wx.EVT_TEXT, self.OnSetHisttypes)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def OnHistMap(self, event):
        """Hander for radio buttons to choose between histogramming a
            single raster and an imagery group
        """
        if self.rasterRadio.GetValue() is True:
            self.maptype = 'raster'
            self.rselection.Enable()
            self.gselection.Disable()
            self.gselection.SetValue('')
        elif self.groupRadio.GetValue() is True:
            self.maptype = 'group'
            self.gselection.Enable()
            self.rselection.Disable()
            self.rselection.SetValue('')
        else:
            pass
        
    def OnRasterSelection(self, event):
        """Handler for selecting a single raster map
        """
        self.rasterList = []
        self.rasterList.append(event.GetString())

    def OnGroupSelection(self, event):
        """Handler for selecting imagery group
        """
        self.rasterList = []
        self.group = event.GetString()
        ret = grass.read_command('i.group', 
                                  group = '%s' % self.group, 
                                  quiet = True,
                                  flags = 'g').strip().splitlines()

        if ret not in [None, '', ['']]:
            self.rasterList = ret
        else:
            wx.MessageBox(message = _("Selected group must be in current mapset"), 
                          caption = _('Invalid input'), 
                          style = wx.OK | wx.ICON_ERROR)
                                                                                            
    def OnSetBins(self, event):
        """Bins for histogramming FP maps (=nsteps in r.stats)
        """
        self.bins = self.spinbins.GetValue()
        
    def OnSetHisttypes(self, event):
        self.histtype = event.GetString()
        

class TextDialog(wx.Dialog):
    def __init__(self, parent, id, title, plottype = '', 
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs):
        """Dialog to set histogram text options: font, title
        and font size, axis labels and font size
        """
        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)
        #
        # initialize variables
        #
        # combo box entry lists
        self.ffamilydict = { 'default' : wx.FONTFAMILY_DEFAULT,
                             'decorative' : wx.FONTFAMILY_DECORATIVE,
                             'roman' : wx.FONTFAMILY_ROMAN,
                             'script' : wx.FONTFAMILY_SCRIPT,
                             'swiss' : wx.FONTFAMILY_SWISS,
                             'modern' : wx.FONTFAMILY_MODERN,
                             'teletype' : wx.FONTFAMILY_TELETYPE }

        self.fstyledict = { 'normal' : wx.FONTSTYLE_NORMAL,
                            'slant' : wx.FONTSTYLE_SLANT,
                            'italic' : wx.FONTSTYLE_ITALIC }

        self.fwtdict = { 'normal' : wx.FONTWEIGHT_NORMAL,
                         'light' : wx.FONTWEIGHT_LIGHT,
                         'bold' : wx.FONTWEIGHT_BOLD }

        self.parent = parent
        self.plottype = plottype

        self.ptitle = self.parent.ptitle
        self.xlabel = self.parent.xlabel
        self.ylabel = self.parent.ylabel

        self.properties = self.parent.properties # read-only
        
        # font size
        self.fontfamily = self.properties['font']['wxfont'].GetFamily()
        self.fontstyle = self.properties['font']['wxfont'].GetStyle()
        self.fontweight = self.properties['font']['wxfont'].GetWeight()

        self._do_layout()
                
    def _do_layout(self):
        """Do layout"""
        # dialog layout
        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = " %s " % _("Text settings"))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)

        #
        # profile title
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Profile title:"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
        self.ptitleentry = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (250,-1))
        # self.ptitleentry.SetFont(self.font)
        self.ptitleentry.SetValue(self.ptitle)
        gridSizer.Add(item = self.ptitleentry, pos = (0, 1))

        #
        # title font
        #
        tlabel = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Title font size (pts):"))
        gridSizer.Add(item = tlabel, flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
        self.ptitlesize = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", pos = (30, 50),
                                      size = (50,-1), style = wx.SP_ARROW_KEYS)
        self.ptitlesize.SetRange(5,100)
        self.ptitlesize.SetValue(int(self.properties['font']['prop']['titleSize']))
        gridSizer.Add(item = self.ptitlesize, pos = (1, 1))

        #
        # x-axis label
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("X-axis label:"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
        self.xlabelentry = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (250,-1))
        # self.xlabelentry.SetFont(self.font)
        self.xlabelentry.SetValue(self.xlabel)
        gridSizer.Add(item = self.xlabelentry, pos = (2, 1))

        #
        # y-axis label
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Y-axis label:"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (3, 0))
        self.ylabelentry = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (250,-1))
        # self.ylabelentry.SetFont(self.font)
        self.ylabelentry.SetValue(self.ylabel)
        gridSizer.Add(item = self.ylabelentry, pos = (3, 1))

        #
        # font size
        #
        llabel = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Label font size (pts):"))
        gridSizer.Add(item = llabel, flag = wx.ALIGN_CENTER_VERTICAL, pos = (4, 0))
        self.axislabelsize = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", pos = (30, 50),
                                         size = (50, -1), style = wx.SP_ARROW_KEYS)
        self.axislabelsize.SetRange(5, 100) 
        self.axislabelsize.SetValue(int(self.properties['font']['prop']['axisSize']))
        gridSizer.Add(item = self.axislabelsize, pos = (4,1))

        boxSizer.Add(item = gridSizer)
        sizer.Add(item = boxSizer, flag = wx.ALL | wx.EXPAND, border = 3)

        #
        # font settings
        #
        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = " %s " % _("Font settings"))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)

        #
        # font family
        #
        label1 = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Font family:"))
        gridSizer.Add(item = label1, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
        self.ffamilycb = wx.ComboBox(parent = self, id = wx.ID_ANY, size = (250, -1),
                                choices = self.ffamilydict.keys(), style = wx.CB_DROPDOWN)
        self.ffamilycb.SetStringSelection('swiss')
        for item in self.ffamilydict.items():
            if self.fontfamily == item[1]:
                self.ffamilycb.SetStringSelection(item[0])
                break
        gridSizer.Add(item = self.ffamilycb, pos = (0, 1), flag = wx.ALIGN_RIGHT)

        #
        # font style
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Style:"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
        self.fstylecb = wx.ComboBox(parent = self, id = wx.ID_ANY, size = (250, -1),
                                    choices = self.fstyledict.keys(), style = wx.CB_DROPDOWN)
        self.fstylecb.SetStringSelection('normal')
        for item in self.fstyledict.items():
            if self.fontstyle == item[1]:
                self.fstylecb.SetStringSelection(item[0])
                break
        gridSizer.Add(item = self.fstylecb, pos = (1, 1), flag = wx.ALIGN_RIGHT)

        #
        # font weight
        #
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Weight:"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
        self.fwtcb = wx.ComboBox(parent = self, size = (250, -1),
                                 choices = self.fwtdict.keys(), style = wx.CB_DROPDOWN)
        self.fwtcb.SetStringSelection('normal')
        for item in self.fwtdict.items():
            if self.fontweight == item[1]:
                self.fwtcb.SetStringSelection(item[0])
                break

        gridSizer.Add(item = self.fwtcb, pos = (2, 1), flag = wx.ALIGN_RIGHT)
                      
        gridSizer.AddGrowableCol(1)
        boxSizer.Add(item = gridSizer, flag = wx.EXPAND)
        sizer.Add(item = boxSizer, flag = wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border = 3)

        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 3)

        #
        # buttons
        #
        btnSave = wx.Button(self, wx.ID_SAVE)
        btnApply = wx.Button(self, wx.ID_APPLY)
        btnOk = wx.Button(self, wx.ID_OK)
        btnCancel = wx.Button(self, wx.ID_CANCEL)
        btnOk.SetDefault()

        # bindings
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnApply.SetToolTipString(_("Apply changes for the current session"))
        btnOk.Bind(wx.EVT_BUTTON, self.OnOk)
        btnOk.SetToolTipString(_("Apply changes for the current session and close dialog"))
        btnOk.SetDefault()
        btnSave.Bind(wx.EVT_BUTTON, self.OnSave)
        btnSave.SetToolTipString(_("Apply and save changes to user settings file (default for next sessions)"))
        btnCancel.Bind(wx.EVT_BUTTON, self.OnCancel)
        btnCancel.SetToolTipString(_("Close dialog and ignore changes"))

        # sizers
        btnStdSizer = wx.StdDialogButtonSizer()
        btnStdSizer.AddButton(btnOk)
        btnStdSizer.AddButton(btnApply)
        btnStdSizer.AddButton(btnCancel)
        btnStdSizer.Realize()
        
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        btnSizer.Add(item = btnSave, proportion = 0, flag = wx.ALIGN_LEFT | wx.ALL, border = 5)
        btnSizer.Add(item = btnStdSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)
        sizer.Add(item = btnSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        #
        # bindings
        #
        self.ptitleentry.Bind(wx.EVT_TEXT, self.OnTitle)
        self.xlabelentry.Bind(wx.EVT_TEXT, self.OnXLabel)
        self.ylabelentry.Bind(wx.EVT_TEXT, self.OnYLabel)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def OnTitle(self, event):
        self.ptitle = event.GetString()

    def OnXLabel(self, event):
        self.xlabel = event.GetString()

    def OnYLabel(self, event):
        self.ylabel = event.GetString()

    def UpdateSettings(self):
        self.properties['font']['prop']['titleSize'] = self.ptitlesize.GetValue()
        self.properties['font']['prop']['axisSize'] = self.axislabelsize.GetValue()

        family = self.ffamilydict[self.ffamilycb.GetStringSelection()]
        self.properties['font']['wxfont'].SetFamily(family)
        style = self.fstyledict[self.fstylecb.GetStringSelection()]
        self.properties['font']['wxfont'].SetStyle(style)
        weight = self.fwtdict[self.fwtcb.GetStringSelection()]
        self.properties['font']['wxfont'].SetWeight(weight)

    def OnSave(self, event):
        """Button 'Save' pressed"""
        self.OnApply(None)
        fileSettings = {}
        UserSettings.ReadSettingsFile(settings = fileSettings)
        fileSettings[self.plottype] = UserSettings.Get(group = self.plottype)
        UserSettings.SaveToFile(fileSettings)
        self.parent.parent.GetLayerManager().GetLogWindow().WriteLog(_('Plot text sizes saved to file \'%s\'.') % UserSettings.filePath)
        self.EndModal(wx.ID_OK)

    def OnApply(self, event):
        """Button 'Apply' pressed"""
        self.UpdateSettings()
        self.parent.OnPlotText(self)
        
    def OnOk(self, event):
        """Button 'OK' pressed"""
        self.OnApply(None)
        self.EndModal(wx.ID_OK)

    def OnCancel(self, event):
        """Button 'Cancel' pressed"""
        self.EndModal(wx.ID_CANCEL)
        
class OptDialog(wx.Dialog):
    def __init__(self, parent, id, title, plottype = '', 
                 style = wx.DEFAULT_DIALOG_STYLE, **kwargs): 
        """Dialog to set various options for data plotted, including: line
        width, color, style; marker size, color, fill, and style; grid
        and legend options.
        """
        wx.Dialog.__init__(self, parent, id, title, style = style, **kwargs)

        # init variables
        self.parent = parent
        self.linestyledict = parent.linestyledict
        self.ptfilldict = parent.ptfilldict
        self.parent = parent
        self.plottype = plottype
        
        self.pttypelist = ['circle',
                           'dot',
                           'square',
                           'triangle',
                           'triangle_down',
                           'cross',
                           'plus']
        
        self.axislist = ['min',
                         'auto',
                         'custom']

        # widgets ids
        self.wxId = {}
        
        self.parent = parent

        # read-only
        self.raster = self.parent.raster
        self.rasterList = self.parent.rasterList
        self.properties = self.parent.properties
        self.map = ''
        
        if len(self.rasterList) == 0:
            wx.MessageBox(parent = self,
                              message = _("No map or image group selected to plot."),
                              caption = _("Warning"), style = wx.OK | wx.ICON_ERROR)
            
        self._do_layout()
        
    def ConvertTuples(self, tlist):
        """Converts tuples to strings when rasterList contains raster
        pairs for scatterplot
        """
        list = []
        for i in tlist:
            i = str(i).strip('()')
            list.append(i)
            
        return list

    def _do_layout(self):
        """Options dialog layout
        """
        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = " %s " % _("Plot settings")) 
        boxMainSizer = wx.StaticBoxSizer(box, wx.HORIZONTAL)

        self.wxId['pcolor']  = 0
        self.wxId['pwidth']  = 0
        self.wxId['pstyle']  = 0
        self.wxId['psize'] = 0
        self.wxId['ptype'] = 0
        self.wxId['pfill'] = 0
        self.wxId['plegend'] = 0
        self.wxId['marker'] = {}
        self.wxId['x-axis'] = {}
        self.wxId['y-axis'] = {}
        
        #
        # plot line settings and point settings
        #
        if len(self.rasterList) == 0: return
        
        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = _("Map/image plotted"))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        
        gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)
        
        row = 0
        choicelist = []
        for i in self.rasterList:
            choicelist.append(str(i))

        self.mapchoice = wx.Choice(parent = self, id = wx.ID_ANY, size = (300, -1),
                                   choices = choicelist)        
        self.mapchoice.SetToolTipString(_("Settings for selected map"))

        if not self.map:
            self.map = self.rasterList[self.mapchoice.GetCurrentSelection()]
        else:
            self.mapchoice.SetStringSelection(str(self.map))
            
                
        gridSizer.Add(item = self.mapchoice, flag = wx.ALIGN_CENTER_VERTICAL, 
                      pos = (row, 0), span = (1, 2))
        
        #
        # options for line plots (profiles and histograms)
        #
        if self.plottype != 'scatter':
            row +=1            
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Line color"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            color = csel.ColourSelect(parent = self, id = wx.ID_ANY, colour = self.raster[self.map]['pcolor'])
            self.wxId['pcolor'] = color.GetId()
            gridSizer.Add(item = color, pos = (row, 1))

            row += 1
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Line width"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            width = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "",
                                 size = (50,-1), style = wx.SP_ARROW_KEYS)
            width.SetRange(1, 10)
            width.SetValue(self.raster[self.map]['pwidth'])
            self.wxId['pwidth'] = width.GetId()
            gridSizer.Add(item = width, pos = (row, 1))

            row +=1
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Line style"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            style = wx.Choice(parent = self, id = wx.ID_ANY, 
                                 size = (120, -1), choices = self.linestyledict.keys())
            style.SetStringSelection(self.raster[self.map]['pstyle'])
            self.wxId['pstyle'] = style.GetId()
            gridSizer.Add(item = style, pos = (row, 1))

        row += 1
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Legend"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
        legend = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (200,-1))
        legend.SetValue(self.raster[self.map]['plegend'])
        gridSizer.Add(item = legend, pos = (row, 1))
        self.wxId['plegend'] = legend.GetId()
        
        boxSizer.Add(item = gridSizer)
        boxMainSizer.Add(item = boxSizer, flag = wx.ALL, border = 3)

        #
        # segment marker settings for profiles only
        #       
        if self.plottype == 'profile':
            box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                               label = " %s " % _("Transect segment marker settings"))
            
            boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
            
            gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Color"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
            ptcolor = csel.ColourSelect(parent = self, id = wx.ID_ANY, colour = self.properties['marker']['color'])
            self.wxId['marker']['color'] = ptcolor.GetId()
            gridSizer.Add(item = ptcolor, pos = (0, 1))

            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Size"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
            ptsize = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "",
                                 size = (50, -1), style = wx.SP_ARROW_KEYS)
            ptsize.SetRange(1, 10)
            ptsize.SetValue(self.properties['marker']['size'])
            self.wxId['marker']['size'] = ptsize.GetId()
            gridSizer.Add(item = ptsize, pos = (1, 1))
            
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Fill"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
            ptfill = wx.Choice(parent = self, id = wx.ID_ANY,
                                 size = (120, -1), choices = self.ptfilldict.keys())
            ptfill.SetStringSelection(self.properties['marker']['fill'])
            self.wxId['marker']['fill'] = ptfill.GetId()
            gridSizer.Add(item = ptfill, pos = (2, 1))
            
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Legend"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (3, 0))
            ptlegend = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (200,-1))
            ptlegend.SetValue(self.properties['marker']['legend'])
            self.wxId['marker']['legend'] = ptlegend.GetId()
            gridSizer.Add(item = ptlegend, pos = (3, 1))
                    
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Style"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (4, 0))
            pttype = wx.Choice(parent = self, size = (200, -1), choices = self.pttypelist)
            pttype.SetStringSelection(self.properties['marker']['type'])
            self.wxId['marker']['type'] = pttype.GetId()
            gridSizer.Add(item = pttype, pos = (4, 1))

            boxSizer.Add(item = gridSizer)
            boxMainSizer.Add(item = boxSizer, flag = wx.ALL, border = 3)
            
        #
        # point options for scatterplots
        #
        elif self.plottype == 'scatter':
            box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                               label = " %s " % _("Scatterplot points"))
            
            boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
            
            gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Color"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (0, 0))
            ptcolor = csel.ColourSelect(parent = self, id = wx.ID_ANY, colour = self.raster[self.map]['pcolor'])
            self.wxId['pcolor'] = ptcolor.GetId()
            gridSizer.Add(item = ptcolor, pos = (0, 1))

            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Size"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (1, 0))
            ptsize = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "",
                                 size = (50, -1), style = wx.SP_ARROW_KEYS)
            ptsize.SetRange(1, 10)
            ptsize.SetValue(self.raster[self.map]['psize'])
            self.wxId['psize'] = ptsize.GetId()
            gridSizer.Add(item = ptsize, pos = (1, 1))
            
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Fill"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (2, 0))
            ptfill = wx.Choice(parent = self, id = wx.ID_ANY,
                               size = (120, -1), choices = self.ptfilldict.keys())
            ptfill.SetStringSelection(self.raster[self.map]['pfill'])
            self.wxId['pfill'] = ptfill.GetId()
            gridSizer.Add(item = ptfill, pos = (2, 1))
            
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Legend"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (3, 0))
            ptlegend = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (200,-1))
            ptlegend.SetValue(self.raster[self.map]['plegend'])
            self.wxId['plegend'] = ptlegend.GetId()
            gridSizer.Add(item = ptlegend, pos = (3, 1))
                    
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Style"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (4, 0))
            pttype = wx.Choice(parent = self, size = (200, -1), choices = self.pttypelist)
            pttype.SetStringSelection(self.raster[self.map]['ptype'])
            self.wxId['ptype'] = pttype.GetId()
            gridSizer.Add(item = pttype, pos = (4, 1))

            boxSizer.Add(item = gridSizer)
            boxMainSizer.Add(item = boxSizer, flag = wx.ALL, border = 3)
            
        sizer.Add(item = boxMainSizer, flag = wx.ALL | wx.EXPAND, border = 3)

        #
        # axis options for all plots
        #
        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = " %s " % _("Axis settings"))
        boxMainSizer = wx.StaticBoxSizer(box, wx.HORIZONTAL)

        middleSizer = wx.BoxSizer(wx.HORIZONTAL)

        idx = 0
        for axis, atype in [(_("X-Axis"), 'x-axis'),
                     (_("Y-Axis"), 'y-axis')]:
            box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                               label = " %s " % axis)
            boxSizer = wx.StaticBoxSizer(box, wx.HORIZONTAL)
            gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)

            prop = self.properties[atype]['prop']
            
            row = 0
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Scale"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            type = wx.Choice(parent = self, id = wx.ID_ANY, size = (100, -1), choices = self.axislist)
            type.SetStringSelection(prop['type']) 
            type.SetToolTipString(_("Automatic axis scaling, custom max and min, or scale matches data range (min)" ))
            self.wxId[atype]['type'] = type.GetId()
            gridSizer.Add(item = type, pos = (row, 1))
                        
            row += 1
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Custom min"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            min = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (70, -1))
            min.SetValue(str(prop['min']))
            self.wxId[atype]['min'] = min.GetId()
            gridSizer.Add(item = min, pos = (row, 1))

            row += 1
            label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Custom max"))
            gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
            max = wx.TextCtrl(parent = self, id = wx.ID_ANY, value = "", size = (70, -1))
            max.SetValue(str(prop['max']))
            self.wxId[atype]['max'] = max.GetId()
            gridSizer.Add(item = max, pos = (row, 1))
            
            row += 1
            log = wx.CheckBox(parent = self, id = wx.ID_ANY, label = _("Log scale"))
            log.SetValue(prop['log'])
            self.wxId[atype]['log'] = log.GetId()
            gridSizer.Add(item = log, pos = (row, 0), span = (1, 2))

            if idx == 0:
                flag = wx.ALL | wx.EXPAND
            else:
                flag = wx.TOP | wx.BOTTOM | wx.RIGHT | wx.EXPAND

            boxSizer.Add(item = gridSizer, flag = wx.ALL, border = 3)
            boxMainSizer.Add(item = boxSizer, flag = flag, border = 3)

            idx += 1
            
        middleSizer.Add(item = boxMainSizer, flag = wx.ALL | wx.EXPAND, border = 3)

        #
        # grid & legend options for all plots
        #
        self.wxId['grid'] = {}
        self.wxId['legend'] = {}
        self.wxId['font'] = {}
        box = wx.StaticBox(parent = self, id = wx.ID_ANY,
                           label = " %s " % _("Grid and Legend settings"))
        boxMainSizer = wx.StaticBoxSizer(box, wx.HORIZONTAL)
        gridSizer = wx.GridBagSizer(vgap = 5, hgap = 5)

        row = 0
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Grid color"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
        gridcolor = csel.ColourSelect(parent = self, id = wx.ID_ANY, colour = self.properties['grid']['color'])
        self.wxId['grid']['color'] = gridcolor.GetId()
        gridSizer.Add(item = gridcolor, pos = (row, 1))

        row +=1
        gridshow = wx.CheckBox(parent = self, id = wx.ID_ANY, label = _("Show grid"))
        gridshow.SetValue(self.properties['grid']['enabled'])
        self.wxId['grid']['enabled'] = gridshow.GetId()
        gridSizer.Add(item = gridshow, pos = (row, 0), span = (1, 2))

        row +=1
        label = wx.StaticText(parent = self, id = wx.ID_ANY, label = _("Legend font size"))
        gridSizer.Add(item = label, flag = wx.ALIGN_CENTER_VERTICAL, pos = (row, 0))
        legendfontsize = wx.SpinCtrl(parent = self, id = wx.ID_ANY, value = "", 
                                     size = (50, -1), style = wx.SP_ARROW_KEYS)
        legendfontsize.SetRange(5,100)
        legendfontsize.SetValue(int(self.properties['font']['prop']['legendSize']))
        self.wxId['font']['legendSize'] = legendfontsize.GetId()
        gridSizer.Add(item = legendfontsize, pos = (row, 1))

        row += 1
        legendshow = wx.CheckBox(parent = self, id = wx.ID_ANY, label = _("Show legend"))
        legendshow.SetValue(self.properties['legend']['enabled'])
        self.wxId['legend']['enabled'] = legendshow.GetId()
        gridSizer.Add(item = legendshow, pos = (row, 0), span = (1, 2))

        boxMainSizer.Add(item = gridSizer, flag = flag, border = 3)

        middleSizer.Add(item = boxMainSizer, flag = wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.EXPAND, border = 3)

        sizer.Add(item = middleSizer, flag = wx.ALL, border = 0)
        
        #
        # line & buttons
        #
        line = wx.StaticLine(parent = self, id = wx.ID_ANY, size = (20, -1), style = wx.LI_HORIZONTAL)
        sizer.Add(item = line, proportion = 0,
                  flag = wx.GROW|wx.ALIGN_CENTER_VERTICAL|wx.LEFT|wx.RIGHT, border = 3)

        #
        # buttons
        #
        btnSave = wx.Button(self, wx.ID_SAVE)
        btnApply = wx.Button(self, wx.ID_APPLY)
        btnOk = wx.Button(self, wx.ID_OK)
        btnCancel = wx.Button(self, wx.ID_CANCEL)
        btnOk.SetDefault()

        # tooltips for buttons
        btnApply.SetToolTipString(_("Apply changes for the current session"))
        btnOk.SetToolTipString(_("Apply changes for the current session and close dialog"))
        btnSave.SetToolTipString(_("Apply and save changes to user settings file (default for next sessions)"))
        btnCancel.SetToolTipString(_("Close dialog and ignore changes"))

        # sizers
        btnStdSizer = wx.StdDialogButtonSizer()
        btnStdSizer.AddButton(btnOk)
        btnStdSizer.AddButton(btnApply)
        btnStdSizer.AddButton(btnCancel)
        btnStdSizer.Realize()
        
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        btnSizer.Add(item = btnSave, proportion = 0, flag = wx.ALIGN_LEFT | wx.ALL, border = 5)
        btnSizer.Add(item = btnStdSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)
        sizer.Add(item = btnSizer, proportion = 0, flag = wx.ALIGN_RIGHT | wx.ALL, border = 5)

        #
        # bindings for buttons and map plot settings controls
        #
        self.mapchoice.Bind(wx.EVT_CHOICE, self.OnSetMap)
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnOk.Bind(wx.EVT_BUTTON, self.OnOk)
        btnOk.SetDefault()
        btnSave.Bind(wx.EVT_BUTTON, self.OnSave)
        btnCancel.Bind(wx.EVT_BUTTON, self.OnCancel)

        self.SetSizer(sizer)
        sizer.Fit(self)

    def OnSetMap(self, event):
        """Handler for changing map selection"""
        idx = event.GetSelection()
        self.map = self.rasterList[idx]
        
        # update settings controls for all plots
        self.FindWindowById(self.wxId['pcolor']).SetColour(self.raster[self.map]['pcolor'])
        self.FindWindowById(self.wxId['plegend']).SetValue(self.raster[self.map]['plegend'])

        # update settings controls for histograms and profiles
        if self.plottype != 'scatter':
            self.FindWindowById(self.wxId['pwidth']).SetValue(self.raster[self.map]['pwidth'])
            self.FindWindowById(self.wxId['pstyle']).SetStringSelection(self.raster[self.map]['pstyle'])

        # update settings controls for scatterplots
        elif self.plottype == 'scatter':
            self.FindWindowById(self.wxId['psize']).SetValue(self.raster[self.map]['psize'])
            self.FindWindowById(self.wxId['ptype']).SetStringSelection(self.raster[self.map]['ptype'])
            self.FindWindowById(self.wxId['pfill']).SetStringSelection(self.raster[self.map]['pfill'])
            
        self.Refresh()
        
    def OnSetOpt(self, event):
        """Handler for changing any other option"""
        self.map = self.rasterList[self.mapchoice.GetCurrentSelection()]
        self.UpdateSettings()
        self.parent.SetGraphStyle()
        p = self.parent.CreatePlotList()
        self.parent.DrawPlot(p)

    def UpdateSettings(self):
        """Apply settings to each map and to entire plot"""
        self.raster[self.map]['pcolor'] = self.FindWindowById(self.wxId['pcolor']).GetColour()
        self.properties['raster']['pcolor'] = self.raster[self.map]['pcolor']
        
        self.raster[self.map]['plegend'] = self.FindWindowById(self.wxId['plegend']).GetValue()
        
        if self.plottype != 'scatter':
            self.raster[self.map]['pwidth'] = int(self.FindWindowById(self.wxId['pwidth']).GetValue())
            self.properties['raster']['pwidth'] = self.raster[self.map]['pwidth']
            self.raster[self.map]['pstyle'] = self.FindWindowById(self.wxId['pstyle']).GetStringSelection()
            self.properties['raster']['pstyle'] = self.raster[self.map]['pstyle']
            
        elif self.plottype == 'scatter':
            self.raster[self.map]['psize'] = self.FindWindowById(self.wxId['psize']).GetValue()
            self.properties['raster']['psize'] = self.raster[self.map]['psize']
            self.raster[self.map]['ptype'] = self.FindWindowById(self.wxId['ptype']).GetStringSelection()
            self.properties['raster']['ptype'] = self.raster[self.map]['ptype']
            self.raster[self.map]['pfill'] = self.FindWindowById(self.wxId['pfill']).GetStringSelection()
            self.properties['raster']['pfill'] = self.raster[self.map]['pfill']

        # update settings for entire plot
        for axis in ('x-axis', 'y-axis'):
            self.properties[axis]['prop']['type'] = self.FindWindowById(self.wxId[axis]['type']).GetStringSelection()
            self.properties[axis]['prop']['min'] = float(self.FindWindowById(self.wxId[axis]['min']).GetValue())
            self.properties[axis]['prop']['max'] = float(self.FindWindowById(self.wxId[axis]['max']).GetValue())
            self.properties[axis]['prop']['log'] = self.FindWindowById(self.wxId[axis]['log']).IsChecked()

        if self.plottype == 'profile':
            self.properties['marker']['color'] = self.FindWindowById(self.wxId['marker']['color']).GetColour()
            self.properties['marker']['fill'] = self.FindWindowById(self.wxId['marker']['fill']).GetStringSelection()
            self.properties['marker']['size'] = self.FindWindowById(self.wxId['marker']['size']).GetValue()
            self.properties['marker']['type'] = self.FindWindowById(self.wxId['marker']['type']).GetStringSelection()
            self.properties['marker']['legend'] = self.FindWindowById(self.wxId['marker']['legend']).GetValue()

        self.properties['grid']['color'] = self.FindWindowById(self.wxId['grid']['color']).GetColour()
        self.properties['grid']['enabled'] = self.FindWindowById(self.wxId['grid']['enabled']).IsChecked()

        # this makes more sense in the text properties, including for settings update. But will need to change
        # layout for controls to text dialog too.
        self.properties['font']['prop']['legendSize'] = self.FindWindowById(self.wxId['font']['legendSize']).GetValue()
        self.properties['legend']['enabled'] = self.FindWindowById(self.wxId['legend']['enabled']).IsChecked()

        self.parent.UpdateLabels()

    def OnSave(self, event):
        """Button 'Save' pressed"""
        self.OnApply(None)
        fileSettings = {}
        UserSettings.ReadSettingsFile(settings = fileSettings)
        fileSettings[self.plottype] = UserSettings.Get(group = self.plottype)
        UserSettings.SaveToFile(fileSettings)
        self.parent.parent.GetLayerManager().GetLogWindow().WriteLog(_('Plot settings saved to file \'%s\'.') % UserSettings.filePath)
        self.Close()

    def OnApply(self, event):
        """Button 'Apply' pressed. Does not close dialog"""
        self.UpdateSettings()
        self.parent.SetGraphStyle()
        p = self.parent.CreatePlotList()
        self.parent.DrawPlot(p)

    def OnOk(self, event):
        """Button 'OK' pressed"""
        self.OnApply(None)
        self.EndModal(wx.ID_OK)
        
    def OnCancel(self, event):
        """Button 'Cancel' pressed"""
        self.Close()