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# Copyright (c) 2001 by Intevation GmbH |
# Copyright (c) 2001, 2003 by Intevation GmbH |
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# Authors: |
# Authors: |
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# Jonathan Coles <[email protected]> |
# Jonathan Coles <[email protected]> |
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# |
# |
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If no mapping can be found then default data will |
If no mapping can be found then default data will |
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be returned. Input values must be hashable objects |
be returned. Input values must be hashable objects |
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|
|
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See the description of GetClassData() for more information |
See the description of FindGroup() for more information |
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on the mapping algorithm. |
on the mapping algorithm. |
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""" |
""" |
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|
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# fix for people using python2.1 |
import copy, operator, types |
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from __future__ import nested_scopes |
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from messages import LAYER_PROJECTION_CHANGED, LAYER_LEGEND_CHANGED, \ |
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LAYER_VISIBILITY_CHANGED |
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from Thuban import _ |
from Thuban import _ |
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from Thuban.Model.color import Color |
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from wxPython.wx import * |
from messages import \ |
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LAYER_PROJECTION_CHANGED, \ |
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LAYER_LEGEND_CHANGED, \ |
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LAYER_VISIBILITY_CHANGED,\ |
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CLASS_CHANGED |
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# constants |
from Thuban.Model.color import Color, Transparent, Black |
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RANGE_MIN = 0 |
from Thuban.Model.range import Range |
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RANGE_MAX = 1 |
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RANGE_DATA = 2 |
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class Classification: |
import Thuban.Model.layer |
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def __init__(self, layer = None, field = None): |
from Thuban.Lib.connector import Publisher |
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"""Initialize a classification. |
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layer -- the layer object who owns this classification |
class Classification(Publisher): |
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"""Encapsulates the classification of layer. |
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The Classification divides some kind of data into Groups which |
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are associated with properties. Later the properties can be |
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retrieved by matching data values to the appropriate group. |
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""" |
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field -- the name of the data table field that |
def __init__(self): |
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is to be used to classify layer properties |
"""Initialize a classification.""" |
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""" |
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self.layer = layer |
self.__groups = [] |
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self.points = {} |
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self.ranges = [] |
self.SetDefaultGroup(ClassGroupDefault()) |
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self.maps = [] |
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self.DefaultData = ClassDataDefault() |
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self.field = field |
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#self.SetField(field) |
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def __iter__(self): |
def __iter__(self): |
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return ClassIterator(self.DefaultData, |
return ClassIterator(self.__groups) |
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self.points.values(), |
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self.ranges, |
def __deepcopy__(self, memo): |
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self.maps) |
clazz = Classification() |
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def __SendMessage(self, message): |
clazz.__groups[0] = copy.deepcopy(self.__groups[0]) |
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if self.layer is not None: |
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self.layer.changed(message, self.layer) |
for i in range(1, len(self.__groups)): |
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clazz.__groups.append(copy.deepcopy(self.__groups[i])) |
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def SetField(self, field): |
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"""Set the name of the data table field to use. |
return clazz |
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field -- if None then all values map to the default data |
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""" |
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self.field = field |
def __SendNotification(self): |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
"""Notify the layer that this class has changed.""" |
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self.issue(CLASS_CHANGED) |
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def GetField(self): |
def __getattr__(self, attr): |
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return self.field |
"""Generate the compiled classification on demand""" |
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if attr == "_compiled_classification": |
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self._compile_classification() |
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return self._compiled_classification |
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raise AttributeError(attr) |
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def SetLayer(self, layer): |
def _compile_classification(self): |
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self.layer = layer |
"""Generate the compiled classification |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
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def GetLayer(self): |
The compiled classification is a more compact representation of |
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return layer.self |
the classification groups that is also more efficient for |
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performing the classification. |
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def SetDefaultData(self, data): |
The compiled classification is a list of tuples. The first |
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"""Set the data to be used when a value can't be classified. |
element of the tuple is a string which describes the rest of the |
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tuple. There are two kinds of tuples: |
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data -- data that the value maps to. See class description. |
'singletons' |
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The second element of the tuple is a dictionary which |
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combines several consecutive ClassGroupSingleton instances. |
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The dictionary maps the values of the singletons (as |
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returned by the GetValue() method) to the corresponding |
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group. |
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'range' |
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The tuple describes a ClassGroupRange instance. The tuples |
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second element is a tuple fo the form (lfunc, min, max, |
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rfunc, group) where group is the original group object, |
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lfunc and rfuct are comparison functions and min and max are |
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lower and upper bounds of the range. Given a value and such |
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a tuple the group matches if and only if |
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lfunc(min, value) and rfunc(max, value) |
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is true. |
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The compiled classification is bound to |
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self._compile_classification. |
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""" |
""" |
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compiled = [] |
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for group in self.__groups[1:]: |
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if isinstance(group, ClassGroupSingleton): |
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if not compiled or compiled[-1][0] != "singletons": |
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compiled.append(("singletons", {})) |
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compiled[-1][1].setdefault(group.GetValue(), group) |
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elif isinstance(group, ClassGroupRange): |
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left, min, max, right = group.GetRangeTuple() |
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if left == "[": |
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lfunc = operator.le |
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elif left == "]": |
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lfunc = operator.lt |
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if right == "[": |
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rfunc = operator.gt |
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elif right == "]": |
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rfunc = operator.ge |
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compiled.append(("range", (lfunc, min, max, rfunc, group))) |
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else: |
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raise TypeError("Unknown group type %s", group) |
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self._compiled_classification = compiled |
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assert(data.GetType() == ClassData.DEFAULT) |
def _clear_compiled_classification(self): |
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self.DefaultData = data |
"""Reset the compiled classification. |
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def GetDefaultData(self): |
If will be created on demand when self._compiled_classification |
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return self.DefaultData |
is accessed again. |
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Call this method whenever self.__groups is modified. |
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""" |
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try: |
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del self._compiled_classification |
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except: |
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pass |
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# |
# |
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# these SetDefault* methods are really only provided for |
# these SetDefault* methods are really only provided for |
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# |
# |
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def SetDefaultFill(self, fill): |
def SetDefaultFill(self, fill): |
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self.DefaultData.SetFill(fill) |
"""Set the default fill color. |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
|
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fill -- a Color object. |
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""" |
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self.GetDefaultGroup().GetProperties().SetFill(fill) |
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self.__SendNotification() |
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def GetDefaultFill(self): |
def GetDefaultFill(self): |
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return self.DefaultData.GetFill() |
"""Return the default fill color.""" |
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return self.GetDefaultGroup().GetProperties().GetFill() |
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def SetDefaultStroke(self, stroke): |
def SetDefaultLineColor(self, color): |
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self.DefaultData.SetStroke(stroke) |
"""Set the default line color. |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
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color -- a Color object. |
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""" |
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self.GetDefaultGroup().GetProperties().SetLineColor(color) |
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self.__SendNotification() |
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def GetDefaultStroke(self): |
def GetDefaultLineColor(self): |
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return self.DefaultData.GetStroke() |
"""Return the default line color.""" |
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return self.GetDefaultGroup().GetProperties().GetLineColor() |
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def SetDefaultStrokeWidth(self, strokeWidth): |
def SetDefaultLineWidth(self, lineWidth): |
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self.DefaultData.SetStrokeWidth(strokeWidth) |
"""Set the default line width. |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
|
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lineWidth -- an integer > 0. |
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""" |
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assert isinstance(lineWidth, types.IntType) |
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self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth) |
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self.__SendNotification() |
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def GetDefaultStrokeWidth(self): |
def GetDefaultLineWidth(self): |
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return self.DefaultData.GetStrokeWidth() |
"""Return the default line width.""" |
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return self.GetDefaultGroup().GetProperties().GetLineWidth() |
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def AddClassData(self, item): |
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type = item.GetType() |
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if type == ClassData.POINT: |
# |
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self.points[item.GetValue()] = item |
# The methods that manipulate self.__groups have to be kept in |
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elif type == ClassData.RANGE: |
# sync. We store the default group in index 0 to make it |
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self.ranges.append(item) |
# convienent to iterate over the classification's groups, but |
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elif type == ClassData.MAP: |
# from the user's perspective the first (non-default) group is |
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self.maps.append(item) |
# at index 0 and the DefaultGroup is a special entity. |
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elif type == ClassData.DEFAULT: |
# |
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self.DefaultData = item |
|
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def SetDefaultGroup(self, group): |
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"""Set the group to be used when a value can't be classified. |
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group -- group that the value maps to. |
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""" |
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assert isinstance(group, ClassGroupDefault) |
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if len(self.__groups) > 0: |
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self.__groups[0] = group |
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else: |
else: |
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raise ValueError(_("Unrecognized ClassData type %s") % type) |
self.__groups.append(group) |
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self.__SendNotification() |
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def GetDefaultGroup(self): |
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"""Return the default group.""" |
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return self.__groups[0] |
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def AppendGroup(self, item): |
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"""Append a new ClassGroup item to the classification. |
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item -- this must be a valid ClassGroup object |
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""" |
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self.InsertGroup(self.GetNumGroups(), item) |
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def InsertGroup(self, index, group): |
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assert isinstance(group, ClassGroup) |
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self.__groups.insert(index + 1, group) |
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self._clear_compiled_classification() |
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self.__SendNotification() |
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def RemoveGroup(self, index): |
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"""Remove the classification group with the given index""" |
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self.__groups.pop(index + 1) |
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self._clear_compiled_classification() |
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self.__SendNotification() |
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def ReplaceGroup(self, index, group): |
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assert isinstance(group, ClassGroup) |
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self.__groups[index + 1] = group |
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self._clear_compiled_classification() |
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self.__SendNotification() |
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def GetGroup(self, index): |
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return self.__groups[index + 1] |
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def GetNumGroups(self): |
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"""Return the number of non-default groups in the classification.""" |
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return len(self.__groups) - 1 |
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self.__SendMessage(LAYER_LEGEND_CHANGED) |
def FindGroup(self, value): |
| 250 |
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"""Return the group that matches the value. |
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def GetClassData(self, value): |
Groups are effectively checked in the order the were added to |
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"""Return the associated data, or the default data. |
the Classification. |
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|
|
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The following search technique is used: |
value -- the value to classify. If there is no mapping or value |
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(1) if the field is None, return the default data |
is None, return the default properties |
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(2) check if the value exists as a single value |
""" |
|
(3) check if the value falls within a range. Ranges |
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are checked in the order they were added to |
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the classification. |
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value -- the value to classify. If there is no mapping, |
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or value is None, return the default properties |
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""" |
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if self.field is not None and value is not None: |
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# |
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# check the discrete values |
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# |
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if self.points.has_key(value): |
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return self.points[value] |
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# |
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# check the ranges |
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# |
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for p in self.ranges: |
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if p.InRange(value): |
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return p |
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# |
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# check the maps |
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# |
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for p in self.maps: |
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try: |
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return p.Map(value) |
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except: pass |
|
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return self.DefaultData |
if value is not None: |
| 260 |
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for typ, params in self._compiled_classification: |
| 261 |
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if typ == "singletons": |
| 262 |
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group = params.get(value) |
| 263 |
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if group is not None: |
| 264 |
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return group |
| 265 |
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elif typ == "range": |
| 266 |
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lfunc, min, max, rfunc, g = params |
| 267 |
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if lfunc(min, value) and rfunc(max, value): |
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return g |
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| 270 |
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return self.GetDefaultGroup() |
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| 272 |
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def GetProperties(self, value): |
| 273 |
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"""Return the properties associated with the given value. |
| 274 |
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| 275 |
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Use this function rather than Classification.FindGroup().GetProperties() |
| 276 |
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since the returned group may be a ClassGroupMap which doesn't support |
| 277 |
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a call to GetProperties(). |
| 278 |
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""" |
| 279 |
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|
| 280 |
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group = self.FindGroup(value) |
| 281 |
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if isinstance(group, ClassGroupMap): |
| 282 |
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return group.GetPropertiesFromValue(value) |
| 283 |
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else: |
| 284 |
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return group.GetProperties() |
| 285 |
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| 286 |
def TreeInfo(self): |
def TreeInfo(self): |
| 287 |
items = [] |
items = [] |
| 288 |
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|
| 289 |
def build_color_item(text, color): |
def build_color_item(text, color): |
| 290 |
if color is Color.None: |
if color is Transparent: |
| 291 |
return ("%s: %s" % (text, _("None")), None) |
return ("%s: %s" % (text, _("None")), None) |
| 292 |
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|
| 293 |
return ("%s: (%.3f, %.3f, %.3f)" % |
return ("%s: (%.3f, %.3f, %.3f)" % |
| 294 |
(text, color.red, color.green, color.blue), |
(text, color.red, color.green, color.blue), |
| 295 |
color) |
color) |
| 296 |
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|
| 297 |
def build_item(data, string): |
def build_item(group, string): |
| 298 |
label = data.GetLabel() |
label = group.GetLabel() |
| 299 |
if label == "": |
if label == "": |
| 300 |
label = string |
label = string |
| 301 |
else: |
else: |
| 302 |
label += " (%s)" % string |
label += " (%s)" % string |
| 303 |
|
|
| 304 |
|
props = group.GetProperties() |
| 305 |
i = [] |
i = [] |
| 306 |
v = data.GetStroke() |
v = props.GetLineColor() |
| 307 |
i.append(build_color_item(_("Stroke"), v)) |
i.append(build_color_item(_("Line Color"), v)) |
| 308 |
v = data.GetStrokeWidth() |
v = props.GetLineWidth() |
| 309 |
i.append(_("Stroke Width: %s") % v) |
i.append(_("Line Width: %s") % v) |
| 310 |
v = data.GetFill() |
v = props.GetFill() |
| 311 |
i.append(build_color_item(_("Fill"), v)) |
i.append(build_color_item(_("Fill"), v)) |
| 312 |
return (label, i) |
return (label, i) |
| 313 |
|
|
| 314 |
for p in self: |
for p in self: |
| 315 |
type = p.GetType() |
items.append(build_item(p, p.GetDisplayText())) |
|
if type == ClassData.DEFAULT: |
|
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items.append(build_item(self.DefaultData, _("'DEFAULT'"))) |
|
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elif type == ClassData.POINT: |
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items.append(build_item(p, str(p.GetValue()))) |
|
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elif type == ClassData.RANGE: |
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items.append(build_item(p, "%s - %s" % |
|
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(p.GetMin(), p.GetMax()))) |
|
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|
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# for p in self.points.values(): |
|
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# items.append(build_item(p, str(p.GetValue()))) |
|
| 316 |
|
|
| 317 |
# for p in self.ranges: |
return (_("Classification"), items) |
|
# items.append(build_item(p, "%s - %s" % (p.GetMin(), p.GetMax()))) |
|
| 318 |
|
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return (_("Classifications"), items) |
|
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|
| 319 |
class ClassIterator: |
class ClassIterator: |
| 320 |
|
"""Allows the Groups in a Classifcation to be interated over. |
| 321 |
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|
| 322 |
|
The items are returned in the following order: |
| 323 |
|
default data, singletons, ranges, maps |
| 324 |
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""" |
| 325 |
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|
| 326 |
|
def __init__(self, data): #default, points, ranges, maps): |
| 327 |
|
"""Constructor. |
| 328 |
|
|
| 329 |
|
default -- the default group |
| 330 |
|
|
| 331 |
|
points -- a list of singleton groups |
| 332 |
|
|
| 333 |
def __init__(self, default, points, ranges, maps): |
ranges -- a list of range groups |
| 334 |
self.data = [default, points, ranges, maps] |
|
| 335 |
self.data_iter = iter(self.data) |
maps -- a list of map groups |
| 336 |
self.iter = None |
""" |
| 337 |
|
|
| 338 |
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self.data = data |
| 339 |
|
self.data_index = 0 |
| 340 |
|
|
| 341 |
def __iter__(self): |
def __iter__(self): |
| 342 |
return self |
return self |
| 343 |
|
|
| 344 |
def next(self): |
def next(self): |
| 345 |
if self.iter is None: |
"""Return the next item.""" |
|
try: |
|
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self.data_item = self.data_iter.next() |
|
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self.iter = iter(self.data_item) |
|
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except TypeError: |
|
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return self.data_item |
|
| 346 |
|
|
| 347 |
try: |
if self.data_index >= len(self.data): |
| 348 |
return self.iter.next() |
raise StopIteration |
|
except StopIteration: |
|
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self.iter = None |
|
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return self.next() |
|
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|
|
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class ClassData: |
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|
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INVALID = -1 |
|
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DEFAULT = 0 |
|
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POINT = 1 |
|
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RANGE = 2 |
|
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MAP = 3 |
|
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def __init__(self, classData = None, type = INVALID): |
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if classData is not None: |
|
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self.SetStroke(classData.GetStroke()) |
|
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self.SetStrokeWidth(classData.GetStrokeWidth()) |
|
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self.SetFill(classData.GetFill()) |
|
| 349 |
else: |
else: |
| 350 |
self.SetStroke(Color.None) |
d = self.data[self.data_index] |
| 351 |
self.SetStrokeWidth(1) |
self.data_index += 1 |
| 352 |
self.SetFill(Color.None) |
return d |
| 353 |
|
|
| 354 |
self.type = type |
class ClassGroupProperties: |
| 355 |
self.label = "" |
"""Represents the properties of a single Classification Group. |
|
|
|
|
def GetType(self): |
|
|
return self.type |
|
| 356 |
|
|
| 357 |
def GetStroke(self): |
These are used when rendering a layer.""" |
|
return self.stroke |
|
| 358 |
|
|
| 359 |
def SetStroke(self, stroke): |
# TODO: Actually, size is only relevant for point objects. |
| 360 |
assert(isinstance(stroke, Color)) |
# Eventually it should be spearated, e.g. when introducing symbols. |
|
self.stroke = stroke |
|
| 361 |
|
|
| 362 |
def GetStrokeWidth(self): |
def __init__(self, props = None): |
| 363 |
return self.stroke_width |
"""Constructor. |
| 364 |
|
|
| 365 |
def SetStrokeWidth(self, stroke_width): |
props -- a ClassGroupProperties object. The class is copied if |
| 366 |
if (stroke_width < 1): |
prop is not None. Otherwise, a default set of properties |
| 367 |
raise ValueError(_("stroke_width < 1")) |
is created such that: line color = Black, line width = 1, |
| 368 |
|
size = 5 and fill color = Transparent |
| 369 |
|
""" |
| 370 |
|
|
| 371 |
|
if props is not None: |
| 372 |
|
self.SetProperties(props) |
| 373 |
|
else: |
| 374 |
|
self.SetLineColor(Black) |
| 375 |
|
self.SetLineWidth(1) |
| 376 |
|
self.SetSize(5) |
| 377 |
|
self.SetFill(Transparent) |
| 378 |
|
|
| 379 |
|
def SetProperties(self, props): |
| 380 |
|
"""Set this class's properties to those in class props.""" |
| 381 |
|
|
| 382 |
|
assert isinstance(props, ClassGroupProperties) |
| 383 |
|
self.SetLineColor(props.GetLineColor()) |
| 384 |
|
self.SetLineWidth(props.GetLineWidth()) |
| 385 |
|
self.SetSize(props.GetSize()) |
| 386 |
|
self.SetFill(props.GetFill()) |
| 387 |
|
|
| 388 |
|
def GetLineColor(self): |
| 389 |
|
"""Return the line color as a Color object.""" |
| 390 |
|
return self.__stroke |
| 391 |
|
|
| 392 |
self.stroke_width = stroke_width |
def SetLineColor(self, color): |
| 393 |
|
"""Set the line color. |
| 394 |
|
|
| 395 |
|
color -- the color of the line. This must be a Color object. |
| 396 |
|
""" |
| 397 |
|
|
| 398 |
|
self.__stroke = color |
| 399 |
|
|
| 400 |
|
def GetLineWidth(self): |
| 401 |
|
"""Return the line width.""" |
| 402 |
|
return self.__strokeWidth |
| 403 |
|
|
| 404 |
|
def SetLineWidth(self, lineWidth): |
| 405 |
|
"""Set the line width. |
| 406 |
|
|
| 407 |
|
lineWidth -- the new line width. This must be > 0. |
| 408 |
|
""" |
| 409 |
|
assert isinstance(lineWidth, types.IntType) |
| 410 |
|
if (lineWidth < 1): |
| 411 |
|
raise ValueError(_("lineWidth < 1")) |
| 412 |
|
|
| 413 |
|
self.__strokeWidth = lineWidth |
| 414 |
|
|
| 415 |
|
def GetSize(self): |
| 416 |
|
"""Return the size.""" |
| 417 |
|
return self.__size |
| 418 |
|
|
| 419 |
|
def SetSize(self, size): |
| 420 |
|
"""Set the size. |
| 421 |
|
|
| 422 |
|
size -- the new size. This must be > 0. |
| 423 |
|
""" |
| 424 |
|
assert isinstance(size, types.IntType) |
| 425 |
|
if (size < 1): |
| 426 |
|
raise ValueError(_("size < 1")) |
| 427 |
|
|
| 428 |
|
self.__size = size |
| 429 |
|
|
| 430 |
def GetFill(self): |
def GetFill(self): |
| 431 |
return self.fill |
"""Return the fill color as a Color object.""" |
| 432 |
|
return self.__fill |
| 433 |
|
|
| 434 |
def SetFill(self, fill): |
def SetFill(self, fill): |
| 435 |
assert(isinstance(fill, Color)) |
"""Set the fill color. |
| 436 |
self.fill = fill |
|
| 437 |
|
fill -- the color of the fill. This must be a Color object. |
| 438 |
|
""" |
| 439 |
|
|
| 440 |
|
self.__fill = fill |
| 441 |
|
|
| 442 |
|
def __eq__(self, other): |
| 443 |
|
"""Return true if 'props' has the same attributes as this class""" |
| 444 |
|
|
| 445 |
|
# |
| 446 |
|
# using 'is' over '==' results in a huge performance gain |
| 447 |
|
# in the renderer |
| 448 |
|
# |
| 449 |
|
return isinstance(other, ClassGroupProperties) \ |
| 450 |
|
and (self.__stroke is other.__stroke or \ |
| 451 |
|
self.__stroke == other.__stroke) \ |
| 452 |
|
and (self.__fill is other.__fill or \ |
| 453 |
|
self.__fill == other.__fill) \ |
| 454 |
|
and self.__strokeWidth == other.__strokeWidth\ |
| 455 |
|
and self.__size == other.__size |
| 456 |
|
|
| 457 |
|
def __ne__(self, other): |
| 458 |
|
return not self.__eq__(other) |
| 459 |
|
|
| 460 |
|
def __copy__(self): |
| 461 |
|
return ClassGroupProperties(self) |
| 462 |
|
|
| 463 |
|
def __deepcopy__(self): |
| 464 |
|
return ClassGroupProperties(self) |
| 465 |
|
|
| 466 |
|
def __repr__(self): |
| 467 |
|
return repr((self.__stroke, self.__strokeWidth, self.__size, |
| 468 |
|
self.__fill)) |
| 469 |
|
|
| 470 |
|
class ClassGroup: |
| 471 |
|
"""A base class for all Groups within a Classification""" |
| 472 |
|
|
| 473 |
|
def __init__(self, label = "", props = None, group = None): |
| 474 |
|
"""Constructor. |
| 475 |
|
|
| 476 |
|
label -- A string representing the Group's label |
| 477 |
|
""" |
| 478 |
|
|
| 479 |
|
if group is not None: |
| 480 |
|
self.SetLabel(copy.copy(group.GetLabel())) |
| 481 |
|
self.SetProperties(copy.copy(group.GetProperties())) |
| 482 |
|
self.SetVisible(group.IsVisible()) |
| 483 |
|
else: |
| 484 |
|
self.SetLabel(label) |
| 485 |
|
self.SetProperties(props) |
| 486 |
|
self.SetVisible(True) |
| 487 |
|
|
| 488 |
def GetLabel(self): |
def GetLabel(self): |
| 489 |
|
"""Return the Group's label.""" |
| 490 |
return self.label |
return self.label |
| 491 |
|
|
| 492 |
def SetLabel(self, label): |
def SetLabel(self, label): |
| 493 |
|
"""Set the Group's label. |
| 494 |
|
|
| 495 |
|
label -- a string representing the Group's label. This must |
| 496 |
|
not be None. |
| 497 |
|
""" |
| 498 |
|
assert isinstance(label, types.StringTypes) |
| 499 |
self.label = label |
self.label = label |
| 500 |
|
|
| 501 |
class ClassDataDefault(ClassData): |
def GetDisplayText(self): |
| 502 |
def __init__(self, classData = None): |
assert False, "GetDisplay must be overridden by subclass!" |
| 503 |
ClassData.__init__(self, classData, ClassData.DEFAULT) |
return "" |
| 504 |
|
|
| 505 |
|
def Matches(self, value): |
| 506 |
|
"""Determines if this Group is associated with the given value. |
| 507 |
|
|
| 508 |
|
Returns False. This needs to be overridden by all subclasses. |
| 509 |
|
""" |
| 510 |
|
assert False, "GetMatches must be overridden by subclass!" |
| 511 |
|
return False |
| 512 |
|
|
| 513 |
|
def GetProperties(self): |
| 514 |
|
"""Return the properties associated with the given value.""" |
| 515 |
|
|
| 516 |
|
return self.prop |
| 517 |
|
|
| 518 |
|
def SetProperties(self, prop): |
| 519 |
|
"""Set the properties associated with this Group. |
| 520 |
|
|
| 521 |
|
prop -- a ClassGroupProperties object. if prop is None, |
| 522 |
|
a default set of properties is created. |
| 523 |
|
""" |
| 524 |
|
|
| 525 |
|
if prop is None: prop = ClassGroupProperties() |
| 526 |
|
assert isinstance(prop, ClassGroupProperties) |
| 527 |
|
self.prop = prop |
| 528 |
|
|
| 529 |
|
def IsVisible(self): |
| 530 |
|
return self.visible |
| 531 |
|
|
| 532 |
|
def SetVisible(self, visible): |
| 533 |
|
self.visible = visible |
| 534 |
|
|
| 535 |
|
def __eq__(self, other): |
| 536 |
|
return isinstance(other, ClassGroup) \ |
| 537 |
|
and self.label == other.label \ |
| 538 |
|
and self.GetProperties() == other.GetProperties() |
| 539 |
|
|
| 540 |
|
def __ne__(self, other): |
| 541 |
|
return not self.__eq__(other) |
| 542 |
|
|
| 543 |
|
def __repr__(self): |
| 544 |
|
return repr(self.label) + ", " + repr(self.GetProperties()) |
| 545 |
|
|
| 546 |
class ClassDataPoint(ClassData): |
class ClassGroupSingleton(ClassGroup): |
| 547 |
|
"""A Group that is associated with a single value.""" |
| 548 |
|
|
| 549 |
|
def __init__(self, value = 0, props = None, label = "", group = None): |
| 550 |
|
"""Constructor. |
| 551 |
|
|
| 552 |
|
value -- the associated value. |
| 553 |
|
|
| 554 |
|
prop -- a ClassGroupProperites object. If prop is None a default |
| 555 |
|
set of properties is created. |
| 556 |
|
|
| 557 |
|
label -- a label for this group. |
| 558 |
|
""" |
| 559 |
|
ClassGroup.__init__(self, label, props, group) |
| 560 |
|
|
| 561 |
|
self.SetValue(value) |
| 562 |
|
|
| 563 |
def __init__(self, value = 0, classData = None): |
def __copy__(self): |
| 564 |
ClassData.__init__(self, classData, ClassData.POINT) |
return ClassGroupSingleton(self.GetValue(), |
| 565 |
|
self.GetProperties(), |
| 566 |
|
self.GetLabel()) |
| 567 |
|
|
| 568 |
self.value = value |
def __deepcopy__(self, memo): |
| 569 |
|
return ClassGroupSingleton(self.GetValue(), group = self) |
| 570 |
|
|
| 571 |
def GetValue(self): |
def GetValue(self): |
| 572 |
return self.value |
"""Return the associated value.""" |
| 573 |
|
return self.__value |
| 574 |
|
|
| 575 |
def SetValue(self, value): |
def SetValue(self, value): |
| 576 |
self.value = value |
"""Associate this Group with the given value.""" |
| 577 |
|
self.__value = value |
| 578 |
|
|
| 579 |
|
def Matches(self, value): |
| 580 |
|
"""Determine if the given value matches the associated Group value.""" |
| 581 |
|
|
| 582 |
|
"""Returns True if the value matches, False otherwise.""" |
| 583 |
|
|
| 584 |
|
return self.__value == value |
| 585 |
|
|
| 586 |
|
def GetDisplayText(self): |
| 587 |
|
label = self.GetLabel() |
| 588 |
|
|
| 589 |
|
if label != "": return label |
| 590 |
|
|
| 591 |
|
return str(self.GetValue()) |
| 592 |
|
|
| 593 |
|
def __eq__(self, other): |
| 594 |
|
return ClassGroup.__eq__(self, other) \ |
| 595 |
|
and isinstance(other, ClassGroupSingleton) \ |
| 596 |
|
and self.__value == other.__value |
| 597 |
|
|
| 598 |
|
def __repr__(self): |
| 599 |
|
return "(" + repr(self.__value) + ", " + ClassGroup.__repr__(self) + ")" |
| 600 |
|
|
| 601 |
|
class ClassGroupDefault(ClassGroup): |
| 602 |
|
"""The default Group. When values do not match any other |
| 603 |
|
Group within a Classification, the properties from this |
| 604 |
|
class are used.""" |
| 605 |
|
|
| 606 |
class ClassDataRange(ClassData): |
def __init__(self, props = None, label = "", group = None): |
| 607 |
|
"""Constructor. |
| 608 |
|
|
| 609 |
def __init__(self, min = 0, max = 1, classData = None): |
prop -- a ClassGroupProperites object. If prop is None a default |
| 610 |
ClassData.__init__(self, classData, ClassData.RANGE) |
set of properties is created. |
| 611 |
|
|
| 612 |
if min >= max: |
label -- a label for this group. |
| 613 |
raise ValueError(_("ClassDataRange: %i(min) >= %i(max)!") % |
""" |
| 614 |
(min, max)) |
|
| 615 |
|
ClassGroup.__init__(self, label, props, group) |
| 616 |
|
|
| 617 |
|
def __copy__(self): |
| 618 |
|
return ClassGroupDefault(self.GetProperties(), self.GetLabel()) |
| 619 |
|
|
| 620 |
|
def __deepcopy__(self, memo): |
| 621 |
|
return ClassGroupDefault(label = self.GetLabel(), group = self) |
| 622 |
|
|
| 623 |
|
def Matches(self, value): |
| 624 |
|
return True |
| 625 |
|
|
| 626 |
|
def GetDisplayText(self): |
| 627 |
|
label = self.GetLabel() |
| 628 |
|
|
| 629 |
|
if label != "": return label |
| 630 |
|
|
| 631 |
|
return _("DEFAULT") |
| 632 |
|
|
| 633 |
|
def __eq__(self, other): |
| 634 |
|
return ClassGroup.__eq__(self, other) \ |
| 635 |
|
and isinstance(other, ClassGroupDefault) \ |
| 636 |
|
and self.GetProperties() == other.GetProperties() |
| 637 |
|
|
| 638 |
|
def __repr__(self): |
| 639 |
|
return "(" + ClassGroup.__repr__(self) + ")" |
| 640 |
|
|
| 641 |
self.SetRange(min, max) |
class ClassGroupRange(ClassGroup): |
| 642 |
|
"""A Group that represents a range of values that map to the same |
| 643 |
|
set of properties.""" |
| 644 |
|
|
| 645 |
|
def __init__(self, _range = (0,1), props = None, label = "", group=None): |
| 646 |
|
"""Constructor. |
| 647 |
|
|
| 648 |
|
The minumum value must be strictly less than the maximum. |
| 649 |
|
|
| 650 |
|
_range -- either a tuple (min, max) where min < max or |
| 651 |
|
a Range object |
| 652 |
|
|
| 653 |
|
prop -- a ClassGroupProperites object. If prop is None a default |
| 654 |
|
set of properties is created. |
| 655 |
|
|
| 656 |
|
label -- a label for this group. |
| 657 |
|
""" |
| 658 |
|
|
| 659 |
|
ClassGroup.__init__(self, label, props, group) |
| 660 |
|
self.SetRange(_range) |
| 661 |
|
|
| 662 |
|
def __copy__(self): |
| 663 |
|
return ClassGroupRange(self.__range, |
| 664 |
|
props = self.GetProperties(), |
| 665 |
|
label = self.GetLabel()) |
| 666 |
|
|
| 667 |
|
def __deepcopy__(self, memo): |
| 668 |
|
return ClassGroupRange(copy.copy(self.__range), |
| 669 |
|
group = self) |
| 670 |
|
|
| 671 |
def GetMin(self): |
def GetMin(self): |
| 672 |
return self.min |
"""Return the range's minimum value.""" |
| 673 |
|
return self.__range.GetRange()[1] |
| 674 |
|
|
| 675 |
def SetMin(self, min): |
def SetMin(self, min): |
| 676 |
self.SetRange(min, self.max) |
"""Set the range's minimum value. |
| 677 |
|
|
| 678 |
|
min -- the new minimum. Note that this must be less than the current |
| 679 |
|
maximum value. Use SetRange() to change both min and max values. |
| 680 |
|
""" |
| 681 |
|
|
| 682 |
|
self.SetRange((min, self.__range.GetRange()[2])) |
| 683 |
|
|
| 684 |
def GetMax(self): |
def GetMax(self): |
| 685 |
return self.max |
"""Return the range's maximum value.""" |
| 686 |
|
return self.__range.GetRange()[2] |
| 687 |
|
|
| 688 |
def SetMax(self, max): |
def SetMax(self, max): |
| 689 |
self.SetRange(self.min, max) |
"""Set the range's maximum value. |
| 690 |
|
|
| 691 |
|
max -- the new maximum. Note that this must be greater than the current |
| 692 |
|
minimum value. Use SetRange() to change both min and max values. |
| 693 |
|
""" |
| 694 |
|
self.SetRange((self.__range.GetRange()[1], max)) |
| 695 |
|
|
| 696 |
|
def SetRange(self, _range): |
| 697 |
|
"""Set a new range. |
| 698 |
|
|
| 699 |
def SetRange(self, min, max): |
_range -- Either a tuple (min, max) where min < max or |
| 700 |
self.min = min |
a Range object. |
| 701 |
self.max = max |
|
| 702 |
if min >= max: |
Raises ValueError on error. |
| 703 |
raise ValueError(_("ClassDataRange: %i(min) >= %i(max)!") % |
""" |
| 704 |
(min, max)) |
|
| 705 |
|
if isinstance(_range, Range): |
| 706 |
|
self.__range = _range |
| 707 |
|
elif isinstance(_range, types.TupleType) and len(_range) == 2: |
| 708 |
|
self.__range = Range(("[", _range[0], _range[1], "[")) |
| 709 |
|
else: |
| 710 |
|
raise ValueError() |
| 711 |
|
|
| 712 |
def GetRange(self): |
def GetRange(self): |
| 713 |
return (self.min, self.max) |
"""Return the range as a string""" |
| 714 |
|
return self.__range.string(self.__range.GetRange()) |
| 715 |
|
|
| 716 |
|
def GetRangeTuple(self): |
| 717 |
|
return self.__range.GetRange() |
| 718 |
|
|
| 719 |
|
def Matches(self, value): |
| 720 |
|
"""Determine if the given value lies with the current range. |
| 721 |
|
|
| 722 |
|
The following check is used: min <= value < max. |
| 723 |
|
""" |
| 724 |
|
|
| 725 |
|
return operator.contains(self.__range, value) |
| 726 |
|
|
| 727 |
|
def GetDisplayText(self): |
| 728 |
|
label = self.GetLabel() |
| 729 |
|
|
| 730 |
|
if label != "": return label |
| 731 |
|
|
| 732 |
|
return self.__range.string(self.__range.GetRange()) |
| 733 |
|
|
| 734 |
def InRange(self, value): |
def __eq__(self, other): |
| 735 |
return self.min <= value < self.max |
return ClassGroup.__eq__(self, other) \ |
| 736 |
|
and isinstance(other, ClassGroupRange) \ |
| 737 |
|
and self.__range == other.__range |
| 738 |
|
|
| 739 |
class ClassDataMap(ClassData): |
def __repr__(self): |
| 740 |
|
return "(" + str(self.__range) + ClassGroup.__repr__(self) + ")" |
| 741 |
|
|
| 742 |
|
class ClassGroupMap(ClassGroup): |
| 743 |
|
"""Currently, this class is not used.""" |
| 744 |
|
|
| 745 |
FUNC_ID = "id" |
FUNC_ID = "id" |
| 746 |
|
|
| 747 |
def __init__(self, map_type = FUNC_ID, func = None, classData = None): |
def __init__(self, map_type = FUNC_ID, func = None, prop = None, label=""): |
| 748 |
ClassData.__init__(self, classData, ClassData.MAP) |
ClassGroup.__init__(self, label) |
| 749 |
|
|
| 750 |
self.map_type = map_type |
self.map_type = map_type |
| 751 |
self.func = func |
self.func = func |
| 756 |
def Map(self, value): |
def Map(self, value): |
| 757 |
return self.func(value) |
return self.func(value) |
| 758 |
|
|
| 759 |
|
def GetProperties(self): |
| 760 |
|
return None |
| 761 |
|
|
| 762 |
|
def GetPropertiesFromValue(self, value): |
| 763 |
|
pass |
| 764 |
|
|
| 765 |
|
def GetDisplayText(self): |
| 766 |
|
return "Map: " + self.map_type |
| 767 |
|
|
| 768 |
# |
# |
| 769 |
# built-in mappings |
# built-in mappings |
| 770 |
# |
# |
Parent Directory
| 
Revision Log
| 
Patch