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# Copyright (c) 2001 by Intevation GmbH |
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# Authors: |
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# Frank Koormann <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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""" |
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Dialogs to the geographic projection library PROJ |
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""" |
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__version__ = "$Revision$" |
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from wxPython.wx import * |
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from string import split |
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ID_PROJECTION_EDIT = 4010 |
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ID_PROJECTION_SELECT = 4011 |
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ID_PROJECTION_OK = 4001 |
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ID_PROJECTION_CANCEL = 4002 |
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ID_UTM_DIALOG_OK = 4101 |
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ID_UTM_DIALOG_CANCEL = 4102 |
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ID_UTM_DIALOG_PROPOSE_ZONE = 4103 |
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ID_UTM_PROPOSE_ZONE_DIALOG_TAKE = 4201 |
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ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL = 4202 |
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projectionDict = {'None' : 'None', 'UTM' : 'utm'} |
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projectionMapping = {'None' : 'None', 'utm' : 'UTM'} |
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class Proj4Dialog(wxDialog): |
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"""Let the user select a projection and specify related parameters""" |
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def __init__(self, parent, projectionParamsList, map_bounding_box): |
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wxDialog.__init__(self, parent, -1, "Projection", |
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style = wxRESIZE_BORDER) |
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self.map_bounding_box = map_bounding_box |
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self.dialogLayout() |
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self.projectionParams={} |
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combo = self.projection |
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if projectionParamsList is not None: |
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for element in projectionParamsList: |
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key, val = split(element,'=') |
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self.projectionParams[key] = val |
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if self.projectionParams.has_key('proj'): |
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proj = projectionMapping[self.projectionParams['proj']] |
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combo.SetSelection(combo.FindString(proj)) |
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else: |
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combo.SetSelection(combo.FindString('None')) |
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self.UpdateProjectionInfo() |
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else: |
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self.projection.SetValue('None') |
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self.UpdateProjectionInfo() |
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def dialogLayout(self): |
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topBox = wxBoxSizer(wxVERTICAL) |
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# Projection selection: |
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projectionBox = wxBoxSizer(wxHORIZONTAL) |
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projectionBox.Add(wxStaticText(self, -1, "Projection"), |
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0, wxALIGN_CENTER|wxALL, 4) |
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self.projection = wxComboBox(self, ID_PROJECTION_SELECT, "", |
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style = wxCB_READONLY) |
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for projection in projectionDict.keys(): |
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self.projection.Append(projection) |
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projectionBox.Add(self.projection, 0, wxALL, 4) |
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projectionBox.Add(wxButton(self, ID_PROJECTION_EDIT, "Edit"), |
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0, wxALL, 4) |
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EVT_COMBOBOX(self, ID_PROJECTION_SELECT, self.OnProj4Select) |
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EVT_BUTTON(self, ID_PROJECTION_EDIT, self.OnEdit) |
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topBox.Add(projectionBox, 0, 0) |
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# Info about current projection: |
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self.projectionInfo = wxTextCtrl(self, -1, "", |
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style = wxTE_MULTILINE|wxTE_READONLY, |
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size = (-1, 60)) |
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topBox.Add(self.projectionInfo,1,wxEXPAND|wxALL, 4) |
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# Control buttons: |
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buttonBox = wxBoxSizer( wxHORIZONTAL ) |
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buttonBox.Add(wxButton(self, ID_PROJECTION_OK, "OK"), |
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0, wxALL, 4) |
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buttonBox.Add(wxButton(self, ID_PROJECTION_CANCEL, "Cancel"), |
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0, wxALL, 4) |
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topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 10) |
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EVT_BUTTON(self, ID_PROJECTION_OK, self.OnProj4OK) |
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EVT_BUTTON(self, ID_PROJECTION_CANCEL, self.OnProj4Cancel) |
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self.SetAutoLayout(true) |
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self.SetSizer(topBox) |
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topBox.Fit(self) |
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topBox.SetSizeHints(self) |
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def OnProj4Select(self, event): |
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projection = self.projection.GetStringSelection() |
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if projection == 'None': |
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self.projectionParams = {} |
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self.UpdateProjectionInfo() |
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def OnEdit(self, event): |
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projection = self.projection.GetStringSelection() |
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if projection is not 'None': |
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dialogname = getattr(self, 'launch' + projection + 'Dialog', None) |
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if dialogname is not None: |
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if dialogname(self): |
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self.UpdateProjectionInfo() |
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else: |
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pass |
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else: |
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self.projectionParams = {} |
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def UpdateProjectionInfo(self): |
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self.projectionInfo.Clear() |
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for key in self.projectionParams.keys(): |
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self.projectionInfo.AppendText(key+": " |
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+str(self.projectionParams[key])+"\n") |
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def OnProj4OK(self, event): |
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self.EndModal(wxID_OK) |
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def OnProj4Cancel(self, event): |
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self.EndModal(wxID_CANCEL) |
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def launchUTMDialog(self, parent): |
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dlg = UTMDialog(parent, parent.projectionInfo ) |
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if dlg.ShowModal(): |
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return true |
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else: |
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return false |
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def GetParams(self): |
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if len(self.projectionParams.keys()) > 0: |
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projection = [] |
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for key in self.projectionParams.keys(): |
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projection.append(key+"="+str(self.projectionParams[key])) |
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else: |
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projection=None |
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return projection |
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class UTMDialog(wxDialog): |
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"""Let the user specify parameters for UTM projection (Zone, Spheroid)""" |
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def __init__(self, parent, projection): |
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wxDialog.__init__(self, parent, -1, "Projection: UTM Parameters", |
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wxDefaultPosition, wxSize(200, 100)) |
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self.parent = parent |
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self.dialogLayout() |
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if self.parent.projectionParams.has_key('zone'): |
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text = str(self.parent.projectionParams['zone']) |
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self.zone.SetSelection(self.zone.FindString(text)) |
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if self.parent.projectionParams.has_key('ellps'): |
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text = str(self.parent.projectionParams['ellps']) |
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self.ellps.SetSelection(self.ellps.FindString(text)) |
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def dialogLayout(self): |
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topBox = wxBoxSizer(wxVERTICAL) |
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zoneBox = wxBoxSizer(wxHORIZONTAL) |
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zoneBox.Add(wxStaticText(self, -1, "UTM Zone"), |
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0, wxALIGN_CENTER|wxALL, 4) |
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self.zone = wxComboBox(self, -1, "", style = wxCB_READONLY) |
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for zone in range(1,61): |
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self.zone.Append(str(zone)) |
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zoneBox.Add(self.zone, 0, wxALIGN_CENTER|wxALL, 4) |
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zoneBox.Add(wxButton(self, ID_UTM_DIALOG_PROPOSE_ZONE, "Propose"), |
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0, wxALL, 4) |
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EVT_BUTTON(self, ID_UTM_DIALOG_PROPOSE_ZONE, self.OnProposeZone) |
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topBox.Add(zoneBox, 1, wxEXPAND|wxALL, 4) |
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ellipsoidBox = wxBoxSizer(wxHORIZONTAL) |
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ellipsoidBox.Add(wxStaticText(self, -1, "Ellipsoid"), |
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0, wxALIGN_CENTER|wxALL, 4) |
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self.ellps = wxComboBox(self, -1, "", style = wxCB_READONLY) |
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for ellps in ["clrk66", "GRS80"]: |
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self.ellps.Append(ellps) |
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ellipsoidBox.Add(self.ellps, 0, wxALIGN_CENTER|wxALL, 4) |
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topBox.Add(ellipsoidBox, 1, wxEXPAND|wxALL, 4) |
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buttonBox = wxBoxSizer(wxHORIZONTAL) |
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buttonBox.Add(wxButton(self, ID_UTM_DIALOG_OK, "OK"), |
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0, wxALL, 4) |
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buttonBox.Add(wxButton(self, ID_UTM_DIALOG_CANCEL, "Cancel"), |
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0, wxALL, 4) |
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topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 10) |
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EVT_BUTTON(self, ID_UTM_DIALOG_OK, self.OnOK) |
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EVT_BUTTON(self, ID_UTM_DIALOG_CANCEL, self.OnCancel) |
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self.SetAutoLayout(true) |
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self.SetSizer(topBox) |
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topBox.Fit(self) |
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topBox.SetSizeHints(self) |
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def OnProposeZone(self, event): |
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dlg = UTMProposeZoneDialog(self) |
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if dlg.ShowModal(): |
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return true |
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else: |
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return false |
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def OnOK(self, event): |
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self.parent.projectionParams = {} |
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self.parent.projectionParams['zone'] = self.zone.GetStringSelection() |
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self.parent.projectionParams['ellps'] = self.ellps.GetStringSelection() |
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self.parent.projectionParams['proj'] = "utm" |
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self.Close(true) |
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def OnCancel(self, event): |
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self.Close(false) |
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class UTMProposeZoneDialog(wxDialog): |
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"""Propose a sensible Zone considering the current map extent.""" |
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def __init__(self, parent): |
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wxDialog.__init__(self, parent, -1, "Projection: Propose UTM Zone", |
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wxDefaultPosition, wxSize(200, 100)) |
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self.parent = parent |
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x, y, x2, y2 = self.parent.parent.map_bounding_box |
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x = x + 180 |
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x2 = x2 + 180 |
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center = (x2 - x) / 2 + x |
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self.proposedZone = str(int(center / 6 + 1)) |
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self.dialogLayout() |
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def dialogLayout(self): |
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topBox = wxBoxSizer(wxVERTICAL) |
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textBox = wxBoxSizer(wxVERTICAL) |
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textBox.Add(wxStaticText(self, -1, "The current map extent center " + |
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"lies in UTM Zone"), |
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0, wxALIGN_CENTER|wxALL, 4) |
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textBox.Add(wxStaticText(self, -1, self.proposedZone), |
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0, wxALIGN_CENTER|wxALL, 4) |
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topBox.Add(textBox, 1, wxEXPAND|wxALL, 4) |
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buttonBox = wxBoxSizer(wxHORIZONTAL) |
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buttonBox.Add(wxButton(self, ID_UTM_PROPOSE_ZONE_DIALOG_TAKE, "Take"), |
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0, wxALL, 4) |
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buttonBox.Add(wxButton(self, ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL, |
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"Cancel"), 0, wxALL, 4) |
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topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 10) |
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EVT_BUTTON(self, ID_UTM_PROPOSE_ZONE_DIALOG_TAKE, self.OnTake) |
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EVT_BUTTON(self, ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL, self.OnCancel) |
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self.SetAutoLayout(true) |
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self.SetSizer(topBox) |
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topBox.Fit(self) |
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topBox.SetSizeHints(self) |
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def OnTake(self, event): |
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self.parent.zone.SetSelection(self.parent.zone.FindString(self.proposedZone)) |
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self.Close(true) |
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def OnCancel(self, event): |
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self.Close(false) |
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