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# Copyright (c) 2001 by Intevation GmbH |
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# Authors: |
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# Jonathan Coles <[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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"""Dialog for classifying how layers are displayed""" |
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__version__ = "$Revision$" |
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import copy |
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|
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from wxPython.wx import * |
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from wxPython.grid import * |
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from Thuban import _ |
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from Thuban.Model.classification import Classification |
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from Thuban.Model.layer import SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT |
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|
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ID_PROPERTY_SELECT = 4010 |
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ID_CLASS_TABLE = 40011 |
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|
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ID_CLASSIFY_OK = 4001 |
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ID_CLASSIFY_CANCEL = 4002 |
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|
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class ClassTable(wxPyGridTableBase): |
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|
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def __init__(self, clinfo): |
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wxPyGridTableBase.__init__(self) |
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self.tdata = [] |
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self.tdata.append([clinfo.DefaultData, 'DEFAULT']) |
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for value, data in clinfo.points.items(): |
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self.tdata.append([data, value]) |
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for range in self.clinfo.ranges: |
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self.tdata.append([range[2], '%s-%s' % range[0], range[1]]) |
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self.SetColLabelValue(1, _("Data Values")) |
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|
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def GetNumberRows(self): |
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return len(self.tdata) |
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|
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def GetNumberCols(self): |
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return 2 |
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def IsEmptyCell(self, row, col): |
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return false |
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def GetValue(self, row, col): |
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return self.tdata[row][col] |
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|
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def SetValue(self, row, col, value): |
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self.tdata[row][col] = value |
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|
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def GetValueAsCustom(self, row, col, typeName): |
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return self.tdata[row][col] |
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class Classifier(wxDialog): |
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def __init__(self, parent, layer): |
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wxDialog.__init__(self, parent, -1, _("Classify"), |
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style = wxRESIZE_BORDER) |
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topBox = wxBoxSizer(wxVERTICAL) |
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|
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propertyBox = wxBoxSizer(wxHORIZONTAL) |
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propertyBox.Add(wxStaticText(self, -1, _("Property")), |
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0, wxALIGN_CENTER | wxALL, 4) |
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self.properties = wxComboBox(self, ID_PROPERTY_SELECT, "", |
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style = wxCB_READONLY) |
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self.num_cols = layer.table.field_count() |
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cur_hilight = 0 |
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for i in range(self.num_cols): |
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type, name, len, decc = layer.table.field_info(i) |
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if name == layer.classification.field: |
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cur_hilight = i |
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self.properties.Append(name) |
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self.properties.SetSelection(cur_hilight) |
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propertyBox.Add(self.properties, 1, wxGROW, 4) |
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EVT_COMBOBOX(self, ID_PROPERTY_SELECT, self.OnPropertySelect) |
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|
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topBox.Add(propertyBox, 0, wxGROW, 4) |
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|
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# |
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# Classification data table |
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# |
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self.classTable = wxGrid(self, ID_CLASS_TABLE, size=(300, 150)) |
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table = ClassTable(layer.classification) |
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self.classTable.SetTable(table, true) |
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self.classTable.EnableEditing(false) |
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cr = ClassRenderer(layer.ShapeType()) |
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for i in range(self.classTable.GetNumberRows()): |
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self.classTable.SetCellRenderer(i, 0, cr) |
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topBox.Add(self.classTable, 1, wxGROW, 0) |
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# |
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# Control buttons: |
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# |
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buttonBox = wxBoxSizer(wxHORIZONTAL) |
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buttonBox.Add(wxButton(self, ID_CLASSIFY_OK, _("OK")), |
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0, wxALL, 4) |
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buttonBox.Add(wxButton(self, ID_CLASSIFY_CANCEL, _("Cancel")), |
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0, wxALL, 4) |
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topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10) |
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EVT_BUTTON(self, ID_CLASSIFY_OK, self.OnOK) |
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EVT_BUTTON(self, ID_CLASSIFY_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 OnPropertySelect(self, event): pass |
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def OnOK(self, event): |
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self.EndModal(wxID_OK) |
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def OnCancel(self, event): |
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self.EndModal(wxID_CANCEL) |
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class ClassRenderer(wxPyGridCellRenderer): |
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def __init__(self, shapeType): |
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wxPyGridCellRenderer.__init__(self) |
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self.shapeType = shapeType |
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def Draw(self, grid, attr, dc, rect, row, col, isSelected): |
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value = grid.GetTable().GetValueAsCustom(row, col, "") |
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# XXX: check if value is a dictionary |
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stroke = value.GetStroke() |
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if stroke is None: |
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pen = wxTRANSPARENT_PEN |
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else: |
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pen = wxPen(wxColour(stroke.red * 255, |
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stroke.green * 255, |
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stroke.blue * 255), |
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value.GetStrokeWidth(), |
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wxSOLID) |
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stroke = value.GetFill() |
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if stroke is None: |
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brush = wxTRANSPARENT_BRUSH |
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else: |
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brush = wxBrush(wxColour(stroke.red * 255, |
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stroke.green * 255, |
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stroke.blue * 255), wxSOLID) |
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dc.SetClippingRegion(rect.GetX(), rect.GetY(), |
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rect.GetWidth(), rect.GetHeight()) |
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dc.SetPen(wxPen(wxLIGHT_GREY)) |
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dc.SetBrush(wxBrush(wxLIGHT_GREY, wxSOLID)) |
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dc.DrawRectangle(rect.GetX(), rect.GetY(), |
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rect.GetWidth(), rect.GetHeight()) |
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dc.SetPen(pen) |
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dc.SetBrush(brush) |
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if self.shapeType == SHAPETYPE_ARC: |
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dc.DrawSpline([wxPoint(rect.GetX(), rect.GetY() + rect.GetHeight()), |
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wxPoint(rect.GetX() + rect.GetWidth()/2, |
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rect.GetY() + rect.GetHeight()/4), |
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wxPoint(rect.GetX() + rect.GetWidth()/2, |
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rect.GetY() + rect.GetHeight()/4*3), |
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wxPoint(rect.GetX() + rect.GetWidth(), rect.GetY())]) |
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elif self.shapeType == SHAPETYPE_POINT or self.shapeType == SHAPETYPE_POLYGON: |
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dc.DrawCircle(rect.GetX() + rect.GetWidth()/2, |
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rect.GetY() + rect.GetHeight()/2, |
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(min(rect.GetWidth(), rect.GetHeight()) |
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- value.GetStrokeWidth())/2) |
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dc.DestroyClippingRegion() |
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