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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. |
| 7 |
|
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"""Dialog for classifying how layers are displayed""" |
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|
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__version__ = "$Revision$" |
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|
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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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|
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from Thuban import _ |
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from Thuban.common import * |
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|
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from Thuban.Model.classification import * #Classification, ClassData |
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|
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from Thuban.Model.color import Color |
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|
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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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ID_CLASSIFY_ADD = 4003 |
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ID_CLASSIFY_GENRANGE = 4004 |
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|
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COL_VISUAL = 0 |
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COL_VALUE = 1 |
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COL_LABEL = 2 |
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|
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# |
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# this is a silly work around to ensure that the table that is |
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# passed into SetTable is the same that is returned by GetTable |
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# |
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import weakref |
| 43 |
class ClassGrid(wxGrid): |
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|
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def __init__(self, parent, layer): |
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wxGrid.__init__(self, parent, ID_CLASS_TABLE, size = (300, 150)) |
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self.SetTable( |
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ClassTable(layer.GetClassification(), layer.ShapeType(), self), |
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true) |
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|
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def SetCellRenderer(self, row, col): |
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raise ValueError(_("Must not allow setting of renderer in ClassGrid!")) |
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|
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def SetTable(self, object, *attributes): |
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self.tableRef = weakref.ref(object) |
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return wxGrid.SetTable(self, object, *attributes) |
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|
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def GetTable(self): |
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return self.tableRef() |
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|
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|
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class ClassTable(wxPyGridTableBase): |
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|
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NUM_COLS = 3 |
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|
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__col_labels = [_("Visual"), _("Value"), _("Label")] |
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|
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# this is tied to the values of classification.ClassData |
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__row_labels = [_("Default"), _("Point"), _("Range"), _("Map")] |
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|
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def __init__(self, clazz, shapeType, view = None): |
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wxPyGridTableBase.__init__(self) |
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self.SetView(view) |
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self.tdata = [] |
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|
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self.Reset(clazz, shapeType) |
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|
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def Reset(self, clazz, shapeType): |
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|
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self.GetView().BeginBatch() |
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|
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self.shapeType = shapeType |
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self.renderer = ClassRenderer(self.shapeType) |
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|
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old_tdata = self.tdata |
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|
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self.tdata = [] |
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|
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if clazz is None: |
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clazz = Classification() |
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|
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p = clazz.GetDefaultData() |
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np = ClassDataPoint(classData = p) |
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self.tdata.append([np, 'DEFAULT', np.GetLabel()]) |
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|
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for p in clazz.points.values(): |
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np = ClassDataPoint(p.GetValue(), classData = p) |
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self.tdata.append([np, np.GetValue(), np.GetLabel()]) |
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|
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for p in clazz.ranges: |
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np = ClassDataRange(p.GetMin(), p.GetMax(), classData = p) |
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self.tdata.append([np, |
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'%s - %s' % (np.GetMin(), np.GetMax()), |
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np.GetLabel()]) |
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|
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self.modified = 0 |
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|
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# |
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# silly message processing for updates to the number of |
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# rows and columns |
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# |
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curRows = len(old_tdata) |
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newRows = len(self.tdata) |
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if newRows > curRows: |
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msg = wxGridTableMessage(self, |
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wxGRIDTABLE_NOTIFY_ROWS_APPENDED, |
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newRows - curRows) # how many |
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self.GetView().ProcessTableMessage(msg) |
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elif newRows < curRows: |
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msg = wxGridTableMessage(self, |
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wxGRIDTABLE_NOTIFY_ROWS_DELETED, |
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curRows - newRows, # position |
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curRows - newRows) # how many |
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self.GetView().ProcessTableMessage(msg) |
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|
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self.GetView().EndBatch() |
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|
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def GetColLabelValue(self, col): |
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return self.__col_labels[col] |
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|
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def GetRowLabelValue(self, row): |
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data = self.tdata[row][COL_VISUAL] |
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type = data.GetType() |
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return self.__row_labels[type] |
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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 self.NUM_COLS |
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|
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def IsEmptyCell(self, row, col): |
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return 0 |
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|
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def GetValue(self, row, col): |
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return self.GetValueAsCustom(row, col, "") |
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|
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def SetValue(self, row, col, value): |
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self.SetValueAsCustom(row, col, "", value) |
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self.__Modified() |
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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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|
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def __ParseInput(self, value): |
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"""Try to determine what kind of input value is |
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(a single number or a range) |
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""" |
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|
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# |
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# first try to take the input as a single number |
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# if there's an exception try to break it into |
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# a range seperated by a '-'. take care to ignore |
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# a leading '-' as that could be for a negative number. |
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# then try to parse the individual parts. if there |
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# is an exception here, let it pass up to the calling |
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# function. |
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# |
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try: |
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return (ClassData.POINT, Str2Num(value)) |
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except: |
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i = value.find('-') |
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if i == 0: |
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i = value.find('-', 1) |
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|
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return (ClassData.RANGE, |
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Str2Num(value[:i]), |
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Str2Num(value[i+1:])) |
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|
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|
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def SetValueAsCustom(self, row, col, typeName, value): |
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data = self.tdata[row][COL_VISUAL] |
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|
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if col == COL_VISUAL: |
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self.tdata[row][COL_VISUAL] = value |
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elif col == COL_VALUE: |
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if row != 0: # DefaultData row |
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type = data.GetType() |
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|
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if type == ClassData.MAP: |
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# something special |
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pass |
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else: # POINT, RANGE |
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try: |
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dataInfo = self.__ParseInput(value) |
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except: pass |
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# bad input, ignore the request |
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else: |
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|
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if dataInfo[0] == ClassData.POINT: |
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if type != ClassData.POINT: |
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data = ClassDataPoint(classData = data) |
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data.SetValue(dataInfo[1]) |
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self.tdata[row][COL_VALUE] = data.GetValue() |
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elif dataInfo[0] == ClassData.RANGE: |
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if type != ClassData.RANGE: |
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data = ClassDataRange(classData = data) |
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data.SetRange(dataInfo[1], dataInfo[2]) |
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self.tdata[row][COL_VALUE] = \ |
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"%s - %s" % (data.GetMin(), data.GetMax()) |
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|
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self.tdata[row][COL_VISUAL] = data |
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|
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# i just want it to redraw! |
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self.GetView().BeginBatch() |
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self.GetView().EndBatch() |
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|
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elif col == COL_LABEL: |
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data.SetLabel(value) |
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self.tdata[row][COL_LABEL] = data.GetLabel() |
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else: |
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raise ValueError(_("Invalid column request")) |
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|
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self.__Modified() |
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|
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def GetAttr(self, row, col, someExtraParameter): |
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attr = wxGridCellAttr() |
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#attr = wxPyGridTableBase.GetAttr(self, row, col, someExtraParameter) |
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|
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if col == COL_VISUAL: |
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attr.SetRenderer(ClassRenderer(self.shapeType)) |
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attr.SetReadOnly() |
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|
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return attr |
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|
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def GetClassData(self, row): |
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return self.tdata[row][COL_VISUAL] |
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|
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def __Modified(self): |
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self.modified = 1 |
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|
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def IsModified(self): |
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return self.modified |
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|
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def AddNewDataRow(self): |
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np = ClassDataPoint() |
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self.tdata.append([np, np.GetValue(), np.GetLabel()]) |
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msg = wxGridTableMessage(self, wxGRIDTABLE_NOTIFY_ROWS_APPENDED, 1) |
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self.GetView().ProcessTableMessage(msg) |
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self.GetView().BeginBatch() |
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self.GetView().EndBatch() |
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|
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class Classifier(wxDialog): |
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|
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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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|
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self.layer = layer |
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|
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topBox = wxBoxSizer(wxVERTICAL) |
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|
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topBox.Add(wxStaticText(self, -1, _("Layer: %s") % layer.Title()), |
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0, wxALIGN_LEFT | wxBOTTOM, 4) |
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topBox.Add(wxStaticText(self, -1, _("Type: %s") % layer.ShapeType()), |
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0, wxALIGN_LEFT | wxBOTTOM, 4) |
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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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|
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self.properties = wxComboBox(self, ID_PROPERTY_SELECT, "", |
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style = wxCB_READONLY) |
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|
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self.num_cols = layer.table.field_count() |
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self.__cur_prop = -1 |
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field = layer.GetClassification().GetField() |
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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 == field: |
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self.__cur_prop = i |
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self.properties.Append(name) |
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self.properties.SetClientData(i, None) |
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|
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self.properties.SetSelection(self.__cur_prop) |
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propertyBox.Add(self.properties, 1, wxGROW|wxALL, 0) |
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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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|
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controlBox = wxBoxSizer(wxHORIZONTAL) |
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self.classGrid = ClassGrid(self, layer) |
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|
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controlBox.Add(self.classGrid, 1, wxGROW, 0) |
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|
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controlButtonBox = wxBoxSizer(wxVERTICAL) |
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controlButtonBox.Add(wxButton(self, ID_CLASSIFY_ADD, |
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_("Add")), 0, wxGROW | wxALL, 4) |
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controlButtonBox.Add(wxButton(self, ID_CLASSIFY_GENRANGE, |
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_("Generate Ranges")), 0, wxGROW | wxALL, 4) |
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|
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controlBox.Add(controlButtonBox, 0, wxGROW, 10) |
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topBox.Add(controlBox, 1, wxGROW, 10) |
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|
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EVT_BUTTON(self, ID_CLASSIFY_ADD, self.OnAdd) |
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EVT_BUTTON(self, ID_CLASSIFY_GENRANGE, self.OnGenRange) |
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EVT_GRID_CELL_LEFT_DCLICK(self.classGrid, self.OnCellDClick) |
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|
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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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|
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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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|
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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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|
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def __BuildClassification(self, prop): |
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|
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clazz = Classification() |
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clazz.SetField(self.properties.GetStringSelection()) |
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|
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numRows = self.classGrid.GetNumberRows() |
| 337 |
|
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if numRows > 0: |
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table = self.classGrid.GetTable() |
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clazz.SetDefaultData(table.GetClassData(0)) |
| 341 |
|
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for i in range(1, numRows): |
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clazz.AddClassData(table.GetClassData(i)) |
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|
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return clazz |
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|
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def OnPropertySelect(self, event): |
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self.properties.SetClientData( |
| 349 |
self.__cur_prop, self.__BuildClassification(self.__cur_prop)) |
| 350 |
|
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self.__cur_prop = self.properties.GetSelection() |
| 352 |
clazz = self.properties.GetClientData(self.__cur_prop) |
| 353 |
table = self.classGrid.GetTable() |
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|
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table.Reset(clazz, self.layer.ShapeType()) |
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|
| 357 |
def OnOK(self, event): |
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"""Put the data from the table into a new Classification and hand |
| 359 |
it to the layer. |
| 360 |
""" |
| 361 |
|
| 362 |
clazz = self.properties.GetClientData(self.__cur_prop) |
| 363 |
|
| 364 |
# |
| 365 |
# only build the classification if there wasn't one to |
| 366 |
# to begin with or it has been modified |
| 367 |
# |
| 368 |
if clazz is None or self.classGrid.GetTable().IsModified(): |
| 369 |
clazz = self.__BuildClassification(self.__cur_prop) |
| 370 |
|
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clazz.SetLayer(self.layer) |
| 372 |
|
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self.layer.SetClassification(clazz) |
| 374 |
|
| 375 |
self.EndModal(wxID_OK) |
| 376 |
|
| 377 |
def OnCancel(self, event): |
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"""Do nothing. The layer's current classification stays the same.""" |
| 379 |
self.EndModal(wxID_CANCEL) |
| 380 |
|
| 381 |
|
| 382 |
def OnAdd(self, event): |
| 383 |
self.classGrid.GetTable().AddNewDataRow() |
| 384 |
print "Classifier.OnAdd()" |
| 385 |
|
| 386 |
def OnGenRange(self, event): |
| 387 |
print "Classifier.OnGenRange()" |
| 388 |
|
| 389 |
def OnCellDClick(self, event): |
| 390 |
r = event.GetRow() |
| 391 |
c = event.GetCol() |
| 392 |
if c == COL_VISUAL: |
| 393 |
prop = self.classGrid.GetTable().GetValueAsCustom(r, c, None) |
| 394 |
propDlg = SelectPropertiesDialog(NULL, prop, self.layer.ShapeType()) |
| 395 |
if propDlg.ShowModal() == wxID_OK: |
| 396 |
new_prop = propDlg.GetClassData() |
| 397 |
prop.SetStroke(new_prop.GetStroke()) |
| 398 |
prop.SetStrokeWidth(new_prop.GetStrokeWidth()) |
| 399 |
prop.SetFill(new_prop.GetFill()) |
| 400 |
self.classGrid.BeginBatch() |
| 401 |
self.classGrid.EndBatch() |
| 402 |
propDlg.Destroy() |
| 403 |
|
| 404 |
|
| 405 |
ID_SELPROP_OK = 4001 |
| 406 |
ID_SELPROP_CANCEL = 4002 |
| 407 |
ID_SELPROP_SPINCTRL = 4002 |
| 408 |
|
| 409 |
class SelectPropertiesDialog(wxDialog): |
| 410 |
|
| 411 |
def __init__(self, parent, prop, shapeType): |
| 412 |
wxDialog.__init__(self, parent, -1, _("Select Properties"), |
| 413 |
style = wxRESIZE_BORDER) |
| 414 |
|
| 415 |
topBox = wxBoxSizer(wxVERTICAL) |
| 416 |
|
| 417 |
self.prop = ClassData(classData = prop) |
| 418 |
|
| 419 |
topBox.Add(wxStaticText(self, -1, _("Stroke Color: ")), |
| 420 |
0, wxALIGN_LEFT | wxALL, 4) |
| 421 |
|
| 422 |
spinBox = wxBoxSizer(wxHORIZONTAL) |
| 423 |
spinBox.Add(wxStaticText(self, -1, _("Stroke Width: ")), |
| 424 |
0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxBOTTOM, 4) |
| 425 |
self.spinCtrl = wxSpinCtrl(self, ID_SELPROP_SPINCTRL, |
| 426 |
min=1, max=10, |
| 427 |
value=str(prop.GetStrokeWidth()), |
| 428 |
initial=prop.GetStrokeWidth()) |
| 429 |
|
| 430 |
EVT_SPINCTRL(self, ID_SELPROP_SPINCTRL, self.OnSpin) |
| 431 |
|
| 432 |
spinBox.Add(self.spinCtrl, 0, wxALIGN_LEFT | wxALL, 4) |
| 433 |
|
| 434 |
topBox.Add(spinBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10) |
| 435 |
|
| 436 |
if shapeType != SHAPETYPE_ARC: |
| 437 |
topBox.Add(wxStaticText(self, -1, _("Fill Color: ")), |
| 438 |
0, wxALIGN_LEFT | wxBOTTOM, 4) |
| 439 |
|
| 440 |
# |
| 441 |
# Control buttons: |
| 442 |
# |
| 443 |
buttonBox = wxBoxSizer(wxHORIZONTAL) |
| 444 |
buttonBox.Add(wxButton(self, ID_CLASSIFY_OK, _("OK")), |
| 445 |
0, wxALL, 4) |
| 446 |
buttonBox.Add(wxButton(self, ID_CLASSIFY_CANCEL, _("Cancel")), |
| 447 |
0, wxALL, 4) |
| 448 |
topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10) |
| 449 |
|
| 450 |
EVT_BUTTON(self, ID_SELPROP_OK, self.OnOK) |
| 451 |
EVT_BUTTON(self, ID_SELPROP_CANCEL, self.OnCancel) |
| 452 |
|
| 453 |
self.SetAutoLayout(true) |
| 454 |
self.SetSizer(topBox) |
| 455 |
topBox.Fit(self) |
| 456 |
topBox.SetSizeHints(self) |
| 457 |
|
| 458 |
def OnOK(self, event): |
| 459 |
self.EndModal(wxID_OK) |
| 460 |
|
| 461 |
def OnCancel(self, event): |
| 462 |
self.EndModal(wxID_CANCEL) |
| 463 |
|
| 464 |
def OnSpin(self, event): |
| 465 |
self.prop.SetStrokeWidth(self.spinCtrl.GetValue()) |
| 466 |
|
| 467 |
def GetClassData(self): |
| 468 |
return self.prop |
| 469 |
|
| 470 |
|
| 471 |
class ClassDataPreviewer: |
| 472 |
|
| 473 |
def Draw(self, dc, rect, data, shapeType): |
| 474 |
|
| 475 |
stroke = data.GetStroke() |
| 476 |
if stroke is Color.None: |
| 477 |
pen = wxTRANSPARENT_PEN |
| 478 |
else: |
| 479 |
pen = wxPen(wxColour(stroke.red * 255, |
| 480 |
stroke.green * 255, |
| 481 |
stroke.blue * 255), |
| 482 |
data.GetStrokeWidth(), |
| 483 |
wxSOLID) |
| 484 |
|
| 485 |
stroke = data.GetFill() |
| 486 |
if stroke is Color.None: |
| 487 |
brush = wxTRANSPARENT_BRUSH |
| 488 |
else: |
| 489 |
brush = wxBrush(wxColour(stroke.red * 255, |
| 490 |
stroke.green * 255, |
| 491 |
stroke.blue * 255), wxSOLID) |
| 492 |
|
| 493 |
dc.SetPen(pen) |
| 494 |
dc.SetBrush(brush) |
| 495 |
|
| 496 |
if shapeType == SHAPETYPE_ARC: |
| 497 |
dc.DrawSpline([wxPoint(rect.GetX(), rect.GetY() + rect.GetHeight()), |
| 498 |
wxPoint(rect.GetX() + rect.GetWidth()/2, |
| 499 |
rect.GetY() + rect.GetHeight()/4), |
| 500 |
wxPoint(rect.GetX() + rect.GetWidth()/2, |
| 501 |
rect.GetY() + rect.GetHeight()/4*3), |
| 502 |
wxPoint(rect.GetX() + rect.GetWidth(), rect.GetY())]) |
| 503 |
|
| 504 |
elif shapeType == SHAPETYPE_POINT or \ |
| 505 |
shapeType == SHAPETYPE_POLYGON: |
| 506 |
|
| 507 |
dc.DrawCircle(rect.GetX() + rect.GetWidth()/2, |
| 508 |
rect.GetY() + rect.GetHeight()/2, |
| 509 |
(min(rect.GetWidth(), rect.GetHeight()) |
| 510 |
- data.GetStrokeWidth())/2) |
| 511 |
|
| 512 |
class ClassRenderer(wxPyGridCellRenderer): |
| 513 |
|
| 514 |
def __init__(self, shapeType): |
| 515 |
wxPyGridCellRenderer.__init__(self) |
| 516 |
self.shapeType = shapeType |
| 517 |
|
| 518 |
def Draw(self, grid, attr, dc, rect, row, col, isSelected): |
| 519 |
data = grid.GetTable().GetValueAsCustom(row, col, "") |
| 520 |
|
| 521 |
|
| 522 |
dc.SetClippingRegion(rect.GetX(), rect.GetY(), |
| 523 |
rect.GetWidth(), rect.GetHeight()) |
| 524 |
dc.SetPen(wxPen(wxLIGHT_GREY)) |
| 525 |
dc.SetBrush(wxBrush(wxLIGHT_GREY, wxSOLID)) |
| 526 |
dc.DrawRectangle(rect.GetX(), rect.GetY(), |
| 527 |
rect.GetWidth(), rect.GetHeight()) |
| 528 |
|
| 529 |
ClassDataPreviewer().Draw(dc, rect, data, self.shapeType) |
| 530 |
|
| 531 |
if isSelected: |
| 532 |
dc.SetPen(wxPen(wxColour(0 * 255, 0 * 255, 0 * 255), |
| 533 |
4, wxSOLID)) |
| 534 |
dc.SetBrush(wxTRANSPARENT_BRUSH) |
| 535 |
dc.DrawRectangle(rect.GetX(), rect.GetY(), |
| 536 |
rect.GetWidth(), rect.GetHeight()) |
| 537 |
|
| 538 |
dc.DestroyClippingRegion() |
| 539 |
|
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