Geografic-Information-System/gui/wxpython/gui_modules/nviz_preferences.py

"""
@package nviz_preferences.py

@brief Nviz (3D view) preferences window

Classes:
 - NvizPreferencesDialog

(C) 2008-2011 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 Martin Landa <landa.martin gmail.com> (Google SoC 2008/2010)
@author Enhancements by Michael Barton <michael.barton asu.edu>
@author Anna Kratochvilova <KratochAnna seznam.cz> (Google SoC 2011)
"""

import types
import copy

import wx
import wx.lib.colourselect as csel

import globalvar
from preferences import globalSettings as UserSettings
from preferences import PreferencesBaseDialog

class NvizPreferencesDialog(PreferencesBaseDialog):
    """!Nviz preferences dialog"""
    def __init__(self, parent, title = _("3D view settings"),
                 settings = UserSettings):
        PreferencesBaseDialog.__init__(self, parent = parent, title = title,
                                       settings = settings)
        self.toolWin = self.parent.nviz
        
        # create notebook pages
        self._createViewPage(self.notebook)
        self._createLightPage(self.notebook)
        self._createSurfacePage(self.notebook)
        self._createVectorPage(self.notebook)
        
        self.SetMinSize(self.GetBestSize())
        self.SetSize(self.size)
        self.btnDefault.SetToolTipString(_("Revert settings to default, changes are not applied"))
        
    def _createViewPage(self, notebook):
        """!Create notebook page for view settings"""
        panel = wx.Panel(parent = notebook, id = wx.ID_ANY)
        
        notebook.AddPage(page = panel,
                         text = " %s " % _("View"))
        
        pageSizer = wx.BoxSizer(wx.VERTICAL)
        
        box = wx.StaticBox (parent = panel, id = wx.ID_ANY,
                            label = " %s " % (_("View")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 3)
        row = 0
        # perspective
        pvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'persp')
        ipvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'persp', internal = True)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Perspective:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("value:")),
                      pos = (row, 1), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        pval = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = pvals['value'],
                           min = ipvals['min'],
                           max = ipvals['max'])
        self.winId['nviz:view:persp:value'] = pval.GetId()
        gridSizer.Add(item = pval, pos = (row, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("step:")),
                      pos = (row, 3), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        pstep = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = pvals['step'],
                           min = ipvals['min'],
                           max = ipvals['max']-1)
        self.winId['nviz:view:persp:step'] = pstep.GetId()
        gridSizer.Add(item = pstep, pos = (row, 4),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        row += 1
        
        # position
        posvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'position')
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Position:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("x:")),
                      pos = (row, 1), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        px = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = posvals['x'] * 100,
                           min = 0,
                           max = 100)
        self.winId['nviz:view:position:x'] = px.GetId()
        gridSizer.Add(item = px, pos = (row, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = "y:"),
                      pos = (row, 3), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        py = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = posvals['y'] * 100,
                           min = 0,
                           max = 100)
        self.winId['nviz:view:position:y'] = py.GetId()
        gridSizer.Add(item = py, pos = (row, 4),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        row += 1
        
        # height is computed dynamically
        
        # twist
        tvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'twist')
        itvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'twist', internal = True)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Twist:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("value:")),
                      pos = (row, 1), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        tval = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = tvals['value'],
                           min = itvals['min'],
                           max = itvals['max'])
        self.winId['nviz:view:twist:value'] = tval.GetId()
        gridSizer.Add(item = tval, pos = (row, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        row += 1
        
        # z-exag
        zvals = UserSettings.Get(group = 'nviz', key = 'view', subkey = 'z-exag')
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Z-exag:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("value:")),
                      pos = (row, 1), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        zval = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = zvals['value'],
                           min = -1e6,
                           max = 1e6)
        self.winId['nviz:view:z-exag:value'] = zval.GetId()
        gridSizer.Add(item = zval, pos = (row, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 3)
        pageSizer.Add(item = boxSizer, proportion = 0,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM,
                      border = 3)

        box = wx.StaticBox(parent = panel, id = wx.ID_ANY,
                           label = " %s " % (_("Image Appearance")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 3)
        gridSizer.AddGrowableCol(0)
        
        # background color
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Background color:")),
                      pos = (0, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        color = csel.ColourSelect(panel, id = wx.ID_ANY,
                                  colour = UserSettings.Get(group = 'nviz', key = 'view',
                                                            subkey = ['background', 'color']),
                                  size = globalvar.DIALOG_COLOR_SIZE)
        color.SetName('GetColour')
        self.winId['nviz:view:background:color'] = color.GetId()
        gridSizer.Add(item = color, pos = (0, 1))
        
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 5)
        pageSizer.Add(item = boxSizer, proportion = 0,
                      flag = wx.EXPAND | wx.ALL,
                      border = 5)
        
        panel.SetSizer(pageSizer)
        
        return panel
    
    def _createLightPage(self, notebook):
        """!Create notebook page for light settings"""
        panel = wx.Panel(parent = notebook, id = wx.ID_ANY)
        
        notebook.AddPage(page = panel,
                         text = " %s " % _("Lighting"))
        
        pageSizer = wx.BoxSizer(wx.VERTICAL)
        
        box = wx.StaticBox (parent = panel, id = wx.ID_ANY,
                            label = " %s " % (_("Light")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 3)

        
        # position
        posvals = UserSettings.Get(group = 'nviz', key = 'light', subkey = 'position')
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Position:")),
                      pos = (0, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("x:")),
                      pos = (0, 1), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        px = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = posvals['x'] * 100,
                           min = -100,
                           max = 100)
        self.winId['nviz:light:position:x'] = px.GetId()
        gridSizer.Add(item = px, pos = (0, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = "y:"),
                      pos = (0, 3), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        py = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = posvals['y'] * 100,
                           min = -100,
                           max = 100)
        self.winId['nviz:light:position:y'] = py.GetId()
        gridSizer.Add(item = py, pos = (0, 4),
                      flag = wx.ALIGN_CENTER_VERTICAL)
                    
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("z:")),
                      pos = (0, 5), flag = wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT)
        
        pz = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = posvals['z'],
                           min = 0,
                           max = 100)
        self.winId['nviz:light:position:z'] = pz.GetId()
        gridSizer.Add(item = pz, pos = (0, 6),
                      flag = wx.ALIGN_CENTER_VERTICAL)
                    
        # brightness
        brightval = UserSettings.Get(group = 'nviz', key = 'light', subkey = 'bright')
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Brightness:")),
                      pos = (1, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        bright = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = brightval,
                           min = 0,
                           max = 100)
        self.winId['nviz:light:bright'] = bright.GetId()
        gridSizer.Add(item = bright, pos = (1, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
                    
        # ambient
        ambval = UserSettings.Get(group = 'nviz', key = 'light', subkey = 'ambient')
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Ambient:")),
                      pos = (2, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        amb = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = ambval,
                           min = 0,
                           max = 100)
        self.winId['nviz:light:ambient'] = amb.GetId()
        gridSizer.Add(item = amb, pos = (2, 2),
                      flag = wx.ALIGN_CENTER_VERTICAL)
                    
        # light color
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Color:")),
                      pos = (3, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        color = csel.ColourSelect(panel, id = wx.ID_ANY,
                                  colour = UserSettings.Get(group = 'nviz', key = 'light',
                                                            subkey = 'color'),
                                  size = globalvar.DIALOG_COLOR_SIZE)
        color.SetName('GetColour')
        self.winId['nviz:light:color'] = color.GetId()
        gridSizer.Add(item = color, pos = (3, 2))
        
        
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 5)
        pageSizer.Add(item = boxSizer, proportion = 0,
                      flag = wx.EXPAND | wx.ALL,
                      border = 5)
        
        panel.SetSizer(pageSizer)
        
        return panel
    
    def _createSurfacePage(self, notebook):
        """!Create notebook page for surface settings"""
        panel = wx.Panel(parent = notebook, id = wx.ID_ANY)
        
        notebook.AddPage(page = panel,
                         text = " %s " % _("Surface"))
        
        pageSizer = wx.BoxSizer(wx.VERTICAL)
        
        # draw
        
        box = wx.StaticBox (parent = panel, id = wx.ID_ANY,
                            label = " %s " % (_("Draw")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 3)
        
        # mode
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                        label = _("Mode:")), flag = wx.ALIGN_CENTER_VERTICAL,
                        pos = (0, 0))
        mode = wx.Choice(parent = panel, id = wx.ID_ANY, size = (-1, -1),
                          choices = [_("coarse"),
                                     _("fine"),
                                     _("both")])
        self.winId['nviz:surface:draw:mode'] = mode.GetId()
        mode.SetName('GetSelection')
        mode.SetSelection(UserSettings.Get(group = 'nviz', key = 'surface',
                                            subkey = ['draw', 'mode']))
        gridSizer.Add(item = mode, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (0, 1))
                    
        # fine
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                        label = _("Fine mode:")), flag = wx.ALIGN_CENTER_VERTICAL,
                        pos = (1, 0))
        res = UserSettings.Get(group = 'nviz', key = 'surface', subkey = ['draw','res-fine'])
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                        label = _("resolution:")), flag = wx.ALIGN_CENTER_VERTICAL,
                        pos = (1, 1))
        fine = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = res,
                           min = 1,
                           max = 100)
        self.winId['nviz:surface:draw:res-fine'] = fine.GetId()
        
        gridSizer.Add(item = fine, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (1, 2))
                    
        # coarse
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                        label = _("Coarse mode:")), flag = wx.ALIGN_CENTER_VERTICAL,
                        pos = (2, 0))
        res = UserSettings.Get(group = 'nviz', key = 'surface', subkey = ['draw','res-coarse'])
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                        label = _("resolution:")), flag = wx.ALIGN_CENTER_VERTICAL,
                        pos = (2, 1))
        coarse = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                           initial = res,
                           min = 1,
                           max = 100)
        self.winId['nviz:surface:draw:res-coarse'] = coarse.GetId()
        
        gridSizer.Add(item = coarse, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (2, 2))
        #style
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
            label = _("style:")), flag = wx.ALIGN_CENTER_VERTICAL,
            pos = (3, 1))
        style = wx.Choice(parent = panel, id = wx.ID_ANY, size = (-1, -1),
                          choices = [_("wire"),
                                     _("surface")])
        self.winId['nviz:surface:draw:style'] = style.GetId()
        style.SetName('GetSelection')
        style.SetSelection(UserSettings.Get(group = 'nviz', key = 'surface',
                                            subkey = ['draw', 'style']))
        self.winId['nviz:surface:draw:style'] = style.GetId()
        
        gridSizer.Add(item = style, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (3, 2))
        #wire color
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
            label = _("wire color:")), flag = wx.ALIGN_CENTER_VERTICAL,
            pos = (4, 1))
        color = csel.ColourSelect(panel, id = wx.ID_ANY,
                                  colour = UserSettings.Get(group = 'nviz', key = 'surface',
                                                            subkey = ['draw', 'wire-color']),
                                  size = globalvar.DIALOG_COLOR_SIZE)
        color.SetName('GetColour')
        self.winId['nviz:surface:draw:wire-color'] = color.GetId() 
        gridSizer.Add(item = color, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (4, 2))
        
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 5)            
        pageSizer.Add(item = boxSizer, proportion = 0,
              flag = wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM,
              border = 5)
        
        panel.SetSizer(pageSizer)
        
        return panel
    
    def _createVectorPage(self, notebook):
        """!Create notebook page for vector settings"""
        panel = wx.Panel(parent = notebook, id = wx.ID_ANY)
        
        notebook.AddPage(page = panel,
                         text = " %s " % _("Vector"))
        
        pageSizer = wx.BoxSizer(wx.VERTICAL)
        
        # vector lines
        box = wx.StaticBox (parent = panel, id = wx.ID_ANY,
                            label = " %s " % (_("Vector lines")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 3)
        
        row = 0
        # icon size
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Width:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        iwidth = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                            initial = 12,
                            min = 1,
                            max = 100)
        self.winId['nviz:vector:lines:width'] = iwidth.GetId()
        iwidth.SetValue(UserSettings.Get(group = 'nviz', key = 'vector',
                                        subkey = ['lines', 'width']))
        gridSizer.Add(item = iwidth, pos = (row, 1),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        # icon color
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Color:")),
                      pos = (row, 4), flag = wx.ALIGN_CENTER_VERTICAL)
        icolor = csel.ColourSelect(panel, id = wx.ID_ANY,
                                   size = globalvar.DIALOG_COLOR_SIZE)
        icolor.SetName('GetColour')
        self.winId['nviz:vector:lines:color'] = icolor.GetId()
        icolor.SetColour(UserSettings.Get(group = 'nviz', key = 'vector',
                                          subkey = ['lines', 'color']))
        gridSizer.Add(item = icolor, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (row, 5))
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 5)
        pageSizer.Add(item = boxSizer, proportion = 0,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM,
                      border = 5)
        
        # vector points
        box = wx.StaticBox (parent = panel, id = wx.ID_ANY,
                            label = " %s " % (_("Vector points")))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap = 3, hgap = 5)
        
        row = 0
        # icon size
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Size:")),
                      pos = (row, 0), flag = wx.ALIGN_CENTER_VERTICAL)
        
        isize = wx.SpinCtrl(parent = panel, id = wx.ID_ANY, size = (65, -1),
                            initial = 100,
                            min = 1,
                            max = 1e6)
        self.winId['nviz:vector:points:size'] = isize.GetId()
        isize.SetValue(UserSettings.Get(group = 'nviz', key = 'vector',
                                        subkey = ['points', 'size']))
        gridSizer.Add(item = isize, pos = (row, 1),
                      flag = wx.ALIGN_CENTER_VERTICAL)
        
        # icon symbol
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Marker:")),
                      pos = (row, 2), flag = wx.ALIGN_CENTER_VERTICAL)
        isym = wx.Choice (parent = panel, id = wx.ID_ANY, size = (100, -1),
                          choices = UserSettings.Get(group = 'nviz', key = 'vector',
                                                   subkey = ['points', 'marker'], internal = True))
        isym.SetName("GetSelection")
        self.winId['nviz:vector:points:marker'] = isym.GetId()
        isym.SetSelection(UserSettings.Get(group = 'nviz', key = 'vector',
                                           subkey = ['points', 'marker']))
        gridSizer.Add(item = isym, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (row, 3))
        
        # icon color
        gridSizer.Add(item = wx.StaticText(parent = panel, id = wx.ID_ANY,
                                         label = _("Color:")),
                      pos = (row, 4), flag = wx.ALIGN_CENTER_VERTICAL)
        icolor = csel.ColourSelect(panel, id = wx.ID_ANY,
                                   size = globalvar.DIALOG_COLOR_SIZE)
        icolor.SetName('GetColour')
        self.winId['nviz:vector:points:color'] = icolor.GetId()
        icolor.SetColour(UserSettings.Get(group = 'nviz', key = 'vector',
                                          subkey = ['points', 'color']))
        gridSizer.Add(item = icolor, flag = wx.ALIGN_CENTER_VERTICAL,
                      pos = (row, 5))
        
        boxSizer.Add(item = gridSizer, proportion = 1,
                  flag = wx.ALL | wx.EXPAND, border = 5)
        pageSizer.Add(item = boxSizer, proportion = 0,
                      flag = wx.EXPAND | wx.LEFT | wx.RIGHT | wx.BOTTOM,
                      border = 5)
        
        panel.SetSizer(pageSizer)
        
        return panel

    def OnDefault(self, event):
        """!Button 'Set to default' pressed"""
        self.settings.userSettings = copy.deepcopy(self.settings.defaultSettings)
        
        # update widgets
        for gks in self.winId.keys():
            subkey1 = None
            try:
                group, key, subkey = gks.split(':')
                value = self.settings.Get(group, key, subkey)
            except ValueError:
                group, key, subkey, subkey1 = gks.split(':')
                value = self.settings.Get(group, key, [subkey, subkey1])
            if subkey == 'position':
                if subkey1 in ('x', 'y'):
                    value = float(value) * 100
            win = self.FindWindowById(self.winId[gks])
            if win.GetName() == 'GetSelection':
                value = win.SetSelection(value)
            else:
                value = win.SetValue(value)        
        
    def OnApply(self, event):
        """Apply Nviz settings for current session"""
        for item in self.winId.keys():
            try:
                group, key, subkey = item.split(':')
                subkey1 = None
            except ValueError:
                group, key, subkey, subkey1 = item.split(':')
            
            id = self.winId[item]
            win = self.FindWindowById(id)
            if win.GetName() == 'GetSelection':
                value = win.GetSelection()
            elif win.GetName() == 'GetColour':
                value = tuple(win.GetValue())
            else:
                value = win.GetValue()
            
            if subkey == 'position':
                if subkey1 in ('x', 'y'):
                    value = float(value) / 100
            if subkey1:
                self.settings.Set(group, value, key, [subkey, subkey1])
            else:
                self.settings.Set(group, value, key, subkey)
                
        self.toolWin.LoadSettings()
        
        
    def OnSave(self, event):
        """!Save button pressed
        
        Apply changes and save settings to configuration file
        """
        self.OnApply(None)
        fileSettings = {}
        UserSettings.ReadSettingsFile(settings = fileSettings)
        fileSettings['nviz'] = UserSettings.Get(group = 'nviz')
        
        UserSettings.SaveToFile(fileSettings)
        self.parent.goutput.WriteLog(
                _('3D view settings saved to file <%s>.') % UserSettings.filePath)
        
        self.Destroy()