Geografic-Information-System/gui/wxpython/mapdisp/toolbars.py

"""
@package mapdisp.toolbars

@brief Map display frame - toolbars

Classes:
 - toolbars::MapToolbar

(C) 2007-2011 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 Michael Barton
@author Jachym Cepicky
@author Martin Landa <landa.martin gmail.com>
"""

import wx

from gui_core.toolbars import BaseToolbar, BaseIcons
from nviz.main         import haveNviz
from vdigit.main       import haveVDigit
from icons.icon        import MetaIcon
from core.utils import _

MapIcons =  {
    'query'      : MetaIcon(img = 'info',
                            label = _('Query raster/vector map(s)'),
                            desc = _('Query selected raster/vector map(s)')),
    'addBarscale': MetaIcon(img = 'scalebar-add',
                            label = _('Show/hide scale bar')),
    'addLegend'  : MetaIcon(img = 'legend-add',
                            label = _('Show/hide legend')),
    'addNorthArrow': MetaIcon(img = 'north-arrow-add',
                              label = _('Show/hide north arrow')),
    'analyze'    : MetaIcon(img = 'layer-raster-analyze',
                            label = _('Analyze map'),
                            desc = _('Measuring, profiling, histogramming, ...')),
    'measureDistance': MetaIcon(img='measure-length',
                                label=_('Measure distance')),
    'measureArea' : MetaIcon(img='area-measure',
                             label=_('Measure area')),
    'profile'    : MetaIcon(img = 'layer-raster-profile',
                            label = _('Profile surface map')),
    'scatter'    : MetaIcon(img = 'layer-raster-profile',
                            label = _("Create bivariate scatterplot of raster maps")),
    'addText'    : MetaIcon(img = 'text-add',
                            label = _('Add text layer')),
    'histogram'  : MetaIcon(img = 'layer-raster-histogram',
                            label = _('Create histogram of raster map')),
    'vnet'       : MetaIcon(img = 'vector-tools',
                            label = _('Vector network analysis tool')),
    }

NvizIcons = {
    'rotate'    : MetaIcon(img = '3d-rotate',
                           label = _('Rotate 3D scene'),
                           desc = _('Drag with mouse to rotate 3D scene')), 
    'flyThrough': MetaIcon(img = 'flythrough',
                           label = _('Fly-through mode'),
                           desc = _('Drag with mouse, hold Ctrl down for different mode'
                                    ' or Shift to accelerate')),
    'zoomIn'    : BaseIcons['zoomIn'].SetLabel(desc = _('Click mouse to zoom')),
    'zoomOut'   : BaseIcons['zoomOut'].SetLabel(desc = _('Click mouse to unzoom'))
    }

class MapToolbar(BaseToolbar):
    """Map Display toolbar
    """
    def __init__(self, parent, toolSwitcher):
        """Map Display constructor

        :param parent: reference to MapFrame
        """
        BaseToolbar.__init__(self, parent=parent, toolSwitcher=toolSwitcher) # MapFrame
        
        self.InitToolbar(self._toolbarData())
        self._default = self.pointer
        
        # optional tools
        choices = [ _('2D view'), ]
        self.toolId = { '2d' : 0 }
        if self.parent.GetLayerManager():
            log = self.parent.GetLayerManager().GetLogWindow()
        
        if haveNviz:
            choices.append(_('3D view'))
            self.toolId['3d'] = 1
        else:
            from nviz.main import errorMsg
            if self.parent.GetLayerManager():
              log.WriteCmdLog(_('3D view mode not available'))
              log.WriteWarning(_('Reason: %s') % str(errorMsg))
            
            self.toolId['3d'] = -1

        if haveVDigit:
            choices.append(_('Digitize'))
            if self.toolId['3d'] > -1:
                self.toolId['vdigit'] = 2
            else:
                self.toolId['vdigit'] = 1
        else:
            from vdigit.main import errorMsg
            if self.parent.GetLayerManager():
              log.WriteCmdLog(_('Vector digitizer not available'))
              log.WriteWarning(_('Reason: %s') % errorMsg)
              log.WriteLog(_('Note that the wxGUI\'s vector digitizer is currently disabled '
                             '(hopefully this will be fixed soon). '
                             'Please keep an eye out for updated versions of GRASS. '
                             'In the meantime you can use "v.digit" from the Develop Vector menu.'), wrap = 60)
            
            self.toolId['vdigit'] = -1
        
        self.combo = wx.ComboBox(parent = self, id = wx.ID_ANY,
                                 choices = choices,
                                 style = wx.CB_READONLY, size = (110, -1))
        self.combo.SetSelection(0)
        
        self.comboid = self.AddControl(self.combo)
        self.parent.Bind(wx.EVT_COMBOBOX, self.OnSelectTool, self.comboid)
        
        # realize the toolbar
        self.Realize()
        
        # workaround for Mac bug. May be fixed by 2.8.8, but not before then.
        self.combo.Hide()
        self.combo.Show()
        
        for tool in (self.pointer, self.query, self.pan, self.zoomIn, self.zoomOut):
            self.toolSwitcher.AddToolToGroup(group='mouseUse', toolbar=self, tool=tool)
        
        self.EnableTool(self.zoomBack, False)
        
        self.FixSize(width = 90)
        
    def _toolbarData(self):
        """Toolbar data"""
        return self._getToolbarData((('displayMap', BaseIcons['display'],
                                      self.parent.OnDraw),
                                     ('renderMap', BaseIcons['render'],
                                      self.parent.OnRender),
                                     ('erase', BaseIcons['erase'],
                                      self.parent.OnErase),
                                     (None, ),
                                     ('pointer', BaseIcons['pointer'],
                                      self.parent.OnPointer,
                                      wx.ITEM_CHECK),
                                     ('query', MapIcons['query'],
                                      self.parent.OnQuery,
                                      wx.ITEM_CHECK),
                                     ('pan', BaseIcons['pan'],
                                      self.parent.OnPan,
                                      wx.ITEM_CHECK),
                                     ('zoomIn', BaseIcons['zoomIn'],
                                      self.parent.OnZoomIn,
                                      wx.ITEM_CHECK),
                                     ('zoomOut', BaseIcons['zoomOut'],
                                      self.parent.OnZoomOut,
                                      wx.ITEM_CHECK),
                                     ('zoomExtent', BaseIcons['zoomExtent'],
                                      self.parent.OnZoomToMap),
                                     ('zoomRegion', BaseIcons['zoomRegion'],
                                      self.parent.OnZoomToWind),
                                     ('zoomBack', BaseIcons['zoomBack'],
                                      self.parent.OnZoomBack),
                                     ('zoomMenu', BaseIcons['zoomMenu'],
                                      self.parent.OnZoomMenu),
                                     (None, ),
                                     ('analyze', MapIcons['analyze'],
                                      self.OnAnalyze),
                                     (None, ),
                                     ('overlay', BaseIcons['overlay'],
                                      self.OnDecoration),
                                     (None, ),
                                     ('saveFile', BaseIcons['saveFile'],
                                      self.parent.SaveToFile),
                                     ('printMap', BaseIcons['print'],
                                      self.parent.PrintMenu),
                                     (None, ))
                                    )
    def InsertTool(self, data):
        """Insert tool to toolbar
        
        :param data: toolbar data"""
        data = self._getToolbarData(data)
        for tool in data:
            self.CreateTool(*tool)
        self.Realize()
        
        self.parent._mgr.GetPane('mapToolbar').BestSize(self.GetBestSize())
        self.parent._mgr.Update()
        
    def RemoveTool(self, tool):
        """Remove tool from toolbar
        
        :param tool: tool id"""
        self.DeleteTool(tool)
        
        self.parent._mgr.GetPane('mapToolbar').BestSize(self.GetBestSize())
        self.parent._mgr.Update()
        
    def ChangeToolsDesc(self, mode2d):
        """Change description of zoom tools for 2D/3D view"""
        if mode2d:
            icons = BaseIcons
        else:
            icons = NvizIcons
        for i, data in enumerate(self._data):
            for tool in (('zoomIn', 'zoomOut')):
                if data[0] == tool:
                    tmp = list(data)
                    tmp[4] = icons[tool].GetDesc()
                    self._data[i] = tuple(tmp)
        
    def OnSelectTool(self, event):
        """Select / enable tool available in tools list
        """
        tool =  event.GetSelection()
        
        if tool == self.toolId['2d']:
            self.ExitToolbars()
            self.Enable2D(True)
            self.ChangeToolsDesc(mode2d = True)            
        
        elif tool == self.toolId['3d'] and \
                not (self.parent.MapWindow3D and self.parent.IsPaneShown('3d')):
            self.ExitToolbars()
            self.parent.AddNviz()
            
        elif tool == self.toolId['vdigit'] and \
                not self.parent.GetToolbar('vdigit'):
            self.ExitToolbars()
            self.parent.AddToolbar("vdigit")
            self.parent.MapWindow.SetFocus()

    def OnAnalyze(self, event):
        """Analysis tools menu
        """
        self._onMenu(((MapIcons["measureDistance"], self.parent.OnMeasureDistance),
                      (MapIcons["measureArea"], self.parent.OnMeasureArea),
                      (MapIcons["profile"],     self.parent.OnProfile),
                      (MapIcons["scatter"],     self.parent.OnScatterplot),
                      (MapIcons["histogram"],   self.parent.OnHistogramPyPlot),
                      (BaseIcons["histogramD"], self.parent.OnHistogram),
                      (MapIcons["vnet"],        self.parent.OnVNet)))
        
    def OnDecoration(self, event):
        """Decorations overlay menu
        """
        self._onMenu(((MapIcons["addLegend"], lambda evt: self.parent.AddLegend()),
                      (MapIcons["addBarscale"], lambda evt: self.parent.AddBarscale()),
                      (MapIcons["addNorthArrow"], lambda evt: self.parent.AddArrow()),
                      (MapIcons["addText"], self.parent.OnAddText)))

        
    def ExitToolbars(self):
        if self.parent.GetToolbar('vdigit'):
            self.parent.toolbars['vdigit'].OnExit()
        if self.parent.GetLayerManager() and \
                self.parent.GetLayerManager().IsPaneShown('toolbarNviz'):
            self.parent.RemoveNviz()
        
    def Enable2D(self, enabled):
        """Enable/Disable 2D display mode specific tools"""
        for tool in (self.zoomRegion,
                     self.zoomMenu,
                     self.analyze,
                     self.printMap):
            self.EnableTool(tool, enabled)