| 1 |
# Copyright (c) 2001 by Intevation GmbH |
# Copyright (c) 2001, 2003 by Intevation GmbH |
| 2 |
# Authors: |
# Authors: |
| 3 |
# Jonathan Coles <[email protected]> |
# Jonathan Coles <[email protected]> |
| 4 |
# |
# |
| 13 |
First, specific values can be associated with data. |
First, specific values can be associated with data. |
| 14 |
Second, ranges can be associated with data such that if |
Second, ranges can be associated with data such that if |
| 15 |
an input value falls with a range that data is returned. |
an input value falls with a range that data is returned. |
| 16 |
If no mapping can be found then a NullData data will |
If no mapping can be found then default data will |
| 17 |
be returned. Input values must be hashable objects |
be returned. Input values must be hashable objects |
| 18 |
|
|
| 19 |
See the description of getProperties() for more information |
See the description of FindGroup() for more information |
| 20 |
on the mapping algorithm. |
on the mapping algorithm. |
| 21 |
""" |
""" |
| 22 |
|
|
| 23 |
|
import copy, operator, types |
| 24 |
|
|
| 25 |
from Thuban import _ |
from Thuban import _ |
| 26 |
|
|
| 27 |
# constants |
from messages import \ |
| 28 |
RANGE_MIN = 0 |
LAYER_PROJECTION_CHANGED, \ |
| 29 |
RANGE_MAX = 1 |
LAYER_LEGEND_CHANGED, \ |
| 30 |
RANGE_DATA = 2 |
LAYER_VISIBILITY_CHANGED |
| 31 |
|
|
| 32 |
class Classification: |
from Thuban.Model.color import Color, Transparent, Black |
| 33 |
|
from Thuban.Model.range import Range |
| 34 |
|
|
| 35 |
|
import Thuban.Model.layer |
| 36 |
|
|
| 37 |
|
class Classification: |
| 38 |
|
"""Encapsulates the classification of layer. |
| 39 |
|
|
| 40 |
|
The Classification divides some kind of data into Groups which |
| 41 |
|
are associated with properties. Later the properties can be |
| 42 |
|
retrieved by matching data values to the appropriate group. |
| 43 |
|
""" |
| 44 |
|
|
| 45 |
def __init__(self, field = None): |
def __init__(self, layer = None, field = None): |
| 46 |
"""Initialize a classification. |
"""Initialize a classification. |
| 47 |
|
|
| 48 |
field -- the name of the data table field that |
layer -- the Layer object who owns this classification |
| 49 |
is to be used to classify layer properties |
|
| 50 |
|
field -- the name of the data table field that |
| 51 |
|
is to be used to classify layer properties |
| 52 |
|
""" |
| 53 |
|
|
| 54 |
|
self.layer = None |
| 55 |
|
self.field = None |
| 56 |
|
self.fieldType = None |
| 57 |
|
self.__groups = [] |
| 58 |
|
|
| 59 |
|
self.SetDefaultGroup(ClassGroupDefault()) |
| 60 |
|
|
| 61 |
|
self.SetFieldInfo(field, None) |
| 62 |
|
|
| 63 |
|
self._set_layer(layer) |
| 64 |
|
|
| 65 |
|
def __iter__(self): |
| 66 |
|
return ClassIterator(self.__groups) |
| 67 |
|
|
| 68 |
|
def __deepcopy__(self, memo): |
| 69 |
|
clazz = Classification() |
| 70 |
|
|
| 71 |
|
# note: the only thing that isn't copied is the layer reference |
| 72 |
|
clazz.field = self.field |
| 73 |
|
clazz.fieldType = self.fieldType |
| 74 |
|
clazz.__groups[0] = copy.deepcopy(self.__groups[0]) |
| 75 |
|
|
| 76 |
|
for i in range(1, len(self.__groups)): |
| 77 |
|
clazz.__groups.append(copy.deepcopy(self.__groups[i])) |
| 78 |
|
|
| 79 |
|
return clazz |
| 80 |
|
|
| 81 |
|
def __SendNotification(self): |
| 82 |
|
"""Notify the layer that this class has changed.""" |
| 83 |
|
if self.layer is not None: |
| 84 |
|
self.layer.ClassChanged() |
| 85 |
|
|
| 86 |
|
def GetField(self): |
| 87 |
|
"""Return the name of the field.""" |
| 88 |
|
return self.field |
| 89 |
|
|
| 90 |
|
def GetFieldType(self): |
| 91 |
|
"""Return the field type.""" |
| 92 |
|
return self.fieldType |
| 93 |
|
|
| 94 |
|
def SetFieldInfo(self, name, type): |
| 95 |
|
"""Set the classified field name to 'name' and it's field |
| 96 |
|
type to 'type' |
| 97 |
|
|
| 98 |
|
If this classification has an owning layer a ValueError |
| 99 |
|
exception will be thrown either the field or field type |
| 100 |
|
mismatch the information in the layer's table. |
| 101 |
|
|
| 102 |
|
If the field info is successful set and the class has |
| 103 |
|
an owning layer, the layer will be informed that the |
| 104 |
|
classification has changed. |
| 105 |
""" |
""" |
| 106 |
|
|
| 107 |
|
if name == "": |
| 108 |
|
name = None |
| 109 |
|
|
| 110 |
|
if self.layer is None: |
| 111 |
|
self.field = name |
| 112 |
|
self.fieldType = type |
| 113 |
|
elif name is None: |
| 114 |
|
self.field = None |
| 115 |
|
self.fieldType = None |
| 116 |
|
else: |
| 117 |
|
# |
| 118 |
|
# verify that the field exists in the layer and that |
| 119 |
|
# the type is correct. |
| 120 |
|
# |
| 121 |
|
fieldType = self.layer.GetFieldType(name) |
| 122 |
|
if fieldType is None: |
| 123 |
|
raise ValueError("'%s' was not found in the layer's table." |
| 124 |
|
% self.field) |
| 125 |
|
elif type is not None and fieldType != type: |
| 126 |
|
raise ValueError("type doesn't match layer's field type for %s" |
| 127 |
|
% self.field) |
| 128 |
|
|
| 129 |
|
self.field = name |
| 130 |
|
self.fieldType = fieldType |
| 131 |
|
|
| 132 |
|
self.__SendNotification() |
| 133 |
|
|
| 134 |
|
def _set_layer(self, layer): |
| 135 |
|
"""Internal: Set the owning Layer of this classification. |
| 136 |
|
|
| 137 |
self.points = {} |
A ValueError exception will be thrown either the field or |
| 138 |
self.ranges = [] |
field type mismatch the information in the layer's table. |
| 139 |
self.setField(field) |
|
| 140 |
self.setNull(None) |
If the layer is successful set, the layer will be informed |
| 141 |
|
that the classification has changed. |
| 142 |
|
""" |
| 143 |
|
|
| 144 |
|
if layer is None: |
| 145 |
|
self.layer = None |
| 146 |
|
else: |
| 147 |
|
old_layer = self.layer |
| 148 |
|
self.layer = layer |
| 149 |
|
|
| 150 |
|
try: |
| 151 |
|
# this sync's the fieldType |
| 152 |
|
# and sends a notification to the layer |
| 153 |
|
self.SetFieldInfo(self.GetField(), None) |
| 154 |
|
except ValueError: |
| 155 |
|
self.layer = old_layer |
| 156 |
|
raise ValueError |
| 157 |
|
|
| 158 |
|
def GetLayer(self): |
| 159 |
|
"""Return the parent layer.""" |
| 160 |
|
return self.layer |
| 161 |
|
|
| 162 |
|
# |
| 163 |
|
# these SetDefault* methods are really only provided for |
| 164 |
|
# some backward compatibility. they should be considered |
| 165 |
|
# for removal once all the classification code is finished. |
| 166 |
|
# |
| 167 |
|
|
| 168 |
|
def SetDefaultFill(self, fill): |
| 169 |
|
"""Set the default fill color. |
| 170 |
|
|
| 171 |
|
fill -- a Color object. |
| 172 |
|
""" |
| 173 |
|
self.GetDefaultGroup().GetProperties().SetFill(fill) |
| 174 |
|
self.__SendNotification() |
| 175 |
|
|
| 176 |
|
def GetDefaultFill(self): |
| 177 |
|
"""Return the default fill color.""" |
| 178 |
|
return self.GetDefaultGroup().GetProperties().GetFill() |
| 179 |
|
|
| 180 |
def setField(self, field): |
def SetDefaultLineColor(self, color): |
| 181 |
"""Set the name of the data table field to use. |
"""Set the default line color. |
| 182 |
|
|
| 183 |
field -- if None then all values map to NullData |
color -- a Color object. |
| 184 |
""" |
""" |
| 185 |
|
self.GetDefaultGroup().GetProperties().SetLineColor(color) |
| 186 |
|
self.__SendNotification() |
| 187 |
|
|
| 188 |
|
def GetDefaultLineColor(self): |
| 189 |
|
"""Return the default line color.""" |
| 190 |
|
return self.GetDefaultGroup().GetProperties().GetLineColor() |
| 191 |
|
|
| 192 |
|
def SetDefaultLineWidth(self, lineWidth): |
| 193 |
|
"""Set the default line width. |
| 194 |
|
|
| 195 |
self.field = field |
lineWidth -- an integer > 0. |
| 196 |
|
""" |
| 197 |
|
assert isinstance(lineWidth, types.IntType) |
| 198 |
|
self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth) |
| 199 |
|
self.__SendNotification() |
| 200 |
|
|
| 201 |
|
def GetDefaultLineWidth(self): |
| 202 |
|
"""Return the default line width.""" |
| 203 |
|
return self.GetDefaultGroup().GetProperties().GetLineWidth() |
| 204 |
|
|
| 205 |
|
|
| 206 |
def setNull(self, data): |
# |
| 207 |
"""Set the data to be used when a value can't be classified. |
# The methods that manipulate self.__groups have to be kept in |
| 208 |
|
# sync. We store the default group in index 0 to make it |
| 209 |
|
# convienent to iterate over the classification's groups, but |
| 210 |
|
# from the user's perspective the first (non-default) group is |
| 211 |
|
# at index 0 and the DefaultGroup is a special entity. |
| 212 |
|
# |
| 213 |
|
|
| 214 |
data -- data that the value maps to. See class description. |
def SetDefaultGroup(self, group): |
| 215 |
|
"""Set the group to be used when a value can't be classified. |
| 216 |
|
|
| 217 |
|
group -- group that the value maps to. |
| 218 |
""" |
""" |
| 219 |
|
|
| 220 |
self.NullData = data |
assert isinstance(group, ClassGroupDefault) |
| 221 |
|
if len(self.__groups) > 0: |
| 222 |
|
self.__groups[0] = group |
| 223 |
|
else: |
| 224 |
|
self.__groups.append(group) |
| 225 |
|
|
| 226 |
|
def GetDefaultGroup(self): |
| 227 |
|
"""Return the default group.""" |
| 228 |
|
return self.__groups[0] |
| 229 |
|
|
| 230 |
|
def AppendGroup(self, item): |
| 231 |
|
"""Append a new ClassGroup item to the classification. |
| 232 |
|
|
| 233 |
def addRange(self, min, max, data): |
item -- this must be a valid ClassGroup object |
| 234 |
"""Add a new range to the classification. |
""" |
| 235 |
|
|
| 236 |
A range allows a value to be classified if it falls between |
self.InsertGroup(self.GetNumGroups(), item) |
| 237 |
min and max. Specifically, min <= value < max |
|
| 238 |
|
def InsertGroup(self, index, group): |
| 239 |
min -- the lower bound. |
|
| 240 |
|
assert isinstance(group, ClassGroup) |
| 241 |
|
|
| 242 |
max -- the upper bound. |
self.__groups.insert(index + 1, group) |
| 243 |
|
|
| 244 |
data -- data that the value maps to. See class description. |
self.__SendNotification() |
| 245 |
|
|
| 246 |
|
def RemoveGroup(self, index): |
| 247 |
|
return self.__groups.pop(index + 1) |
| 248 |
|
|
| 249 |
|
def ReplaceGroup(self, index, group): |
| 250 |
|
assert isinstance(group, ClassGroup) |
| 251 |
|
|
| 252 |
|
self.__groups[index + 1] = group |
| 253 |
|
|
| 254 |
|
self.__SendNotification() |
| 255 |
|
|
| 256 |
|
def GetGroup(self, index): |
| 257 |
|
return self.__groups[index + 1] |
| 258 |
|
|
| 259 |
|
def GetNumGroups(self): |
| 260 |
|
"""Return the number of non-default groups in the classification.""" |
| 261 |
|
return len(self.__groups) - 1 |
| 262 |
|
|
| 263 |
|
|
| 264 |
|
def FindGroup(self, value): |
| 265 |
|
"""Return the associated group, or the default group. |
| 266 |
|
|
| 267 |
|
Groups are checked in the order the were added to the |
| 268 |
|
Classification. |
| 269 |
|
|
| 270 |
|
value -- the value to classify. If there is no mapping, |
| 271 |
|
the field is None or value is None, |
| 272 |
|
return the default properties |
| 273 |
|
""" |
| 274 |
|
|
| 275 |
|
if self.GetField() is not None and value is not None: |
| 276 |
|
|
| 277 |
|
for i in range(1, len(self.__groups)): |
| 278 |
|
group = self.__groups[i] |
| 279 |
|
if group.Matches(value): |
| 280 |
|
return group |
| 281 |
|
|
| 282 |
|
return self.GetDefaultGroup() |
| 283 |
|
|
| 284 |
|
def GetProperties(self, value): |
| 285 |
|
"""Return the properties associated with the given value. |
| 286 |
|
|
| 287 |
|
Use this function rather than Classification.FindGroup().GetProperties() |
| 288 |
|
since the returned group may be a ClassGroupMap which doesn't support |
| 289 |
|
a call to GetProperties(). |
| 290 |
""" |
""" |
| 291 |
|
|
| 292 |
if min >= max: |
group = self.FindGroup(value) |
| 293 |
raise ValueError(_("Range minimum >= maximum!")) |
if isinstance(group, ClassGroupMap): |
| 294 |
self.ranges.append([min, max, data]) |
return group.GetPropertiesFromValue(value) |
| 295 |
|
else: |
| 296 |
|
return group.GetProperties() |
| 297 |
|
|
| 298 |
|
def TreeInfo(self): |
| 299 |
|
items = [] |
| 300 |
|
|
| 301 |
|
def build_color_item(text, color): |
| 302 |
|
if color is Transparent: |
| 303 |
|
return ("%s: %s" % (text, _("None")), None) |
| 304 |
|
|
| 305 |
|
return ("%s: (%.3f, %.3f, %.3f)" % |
| 306 |
|
(text, color.red, color.green, color.blue), |
| 307 |
|
color) |
| 308 |
|
|
| 309 |
|
def build_item(group, string): |
| 310 |
|
label = group.GetLabel() |
| 311 |
|
if label == "": |
| 312 |
|
label = string |
| 313 |
|
else: |
| 314 |
|
label += " (%s)" % string |
| 315 |
|
|
| 316 |
|
props = group.GetProperties() |
| 317 |
|
i = [] |
| 318 |
|
v = props.GetLineColor() |
| 319 |
|
i.append(build_color_item(_("Line Color"), v)) |
| 320 |
|
v = props.GetLineWidth() |
| 321 |
|
i.append(_("Line Width: %s") % v) |
| 322 |
|
v = props.GetFill() |
| 323 |
|
i.append(build_color_item(_("Fill"), v)) |
| 324 |
|
return (label, i) |
| 325 |
|
|
| 326 |
|
for p in self: |
| 327 |
|
items.append(build_item(p, p.GetDisplayText())) |
| 328 |
|
|
| 329 |
|
# if isinstance(p, ClassGroupDefault): |
| 330 |
|
# items.append(build_item(self.GetDefaultGroup(), _("'DEFAULT'"))) |
| 331 |
|
# elif isinstance(p, ClassGroupSingleton): |
| 332 |
|
# items.append(build_item(p, str(p.GetValue()))) |
| 333 |
|
# elif isinstance(p, ClassGroupRange): |
| 334 |
|
# items.append(build_item(p, "%s - %s" % |
| 335 |
|
# (p.GetMin(), p.GetMax()))) |
| 336 |
|
|
| 337 |
|
return (_("Classification"), items) |
| 338 |
|
|
| 339 |
|
class ClassIterator: |
| 340 |
|
"""Allows the Groups in a Classifcation to be interated over. |
| 341 |
|
|
| 342 |
def addPoint(self, value, data): |
The items are returned in the following order: |
| 343 |
"""Associate a single value with data. |
default data, singletons, ranges, maps |
| 344 |
|
""" |
| 345 |
|
|
| 346 |
When this value is to be classified data will be returned. |
def __init__(self, data): #default, points, ranges, maps): |
| 347 |
|
"""Constructor. |
| 348 |
|
|
| 349 |
value -- classification value. |
default -- the default group |
| 350 |
|
|
| 351 |
|
points -- a list of singleton groups |
| 352 |
|
|
| 353 |
data -- data that the value maps to. See class description. |
ranges -- a list of range groups |
| 354 |
|
|
| 355 |
|
maps -- a list of map groups |
| 356 |
""" |
""" |
| 357 |
|
|
| 358 |
self.points[value] = data |
self.data = data #[default, points, ranges, maps] |
| 359 |
|
self.data_index = 0 |
| 360 |
|
#self.data_iter = iter(self.data) |
| 361 |
|
#self.iter = None |
| 362 |
|
|
| 363 |
|
def __iter__(self): |
| 364 |
|
return self |
| 365 |
|
|
| 366 |
|
def next(self): |
| 367 |
|
"""Return the next item.""" |
| 368 |
|
|
| 369 |
|
if self.data_index >= len(self.data): |
| 370 |
|
raise StopIteration |
| 371 |
|
else: |
| 372 |
|
d = self.data[self.data_index] |
| 373 |
|
self.data_index += 1 |
| 374 |
|
return d |
| 375 |
|
|
| 376 |
|
# if self.iter is None: |
| 377 |
|
# try: |
| 378 |
|
# self.data_item = self.data_iter.next() |
| 379 |
|
# self.iter = iter(self.data_item) |
| 380 |
|
# except TypeError: |
| 381 |
|
# return self.data_item |
| 382 |
|
|
| 383 |
|
# try: |
| 384 |
|
# return self.iter.next() |
| 385 |
|
# except StopIteration: |
| 386 |
|
# self.iter = None |
| 387 |
|
# return self.next() |
| 388 |
|
|
| 389 |
|
class ClassGroupProperties: |
| 390 |
|
"""Represents the properties of a single Classification Group. |
| 391 |
|
|
| 392 |
|
These are used when rendering a layer.""" |
| 393 |
|
|
| 394 |
def getProperties(self, value): |
def __init__(self, props = None): |
| 395 |
"""Return the associated data, or the NullData. |
"""Constructor. |
| 396 |
|
|
| 397 |
The following search technique is used: |
props -- a ClassGroupProperties object. The class is copied if |
| 398 |
(1) if the field is None, return NullData |
prop is not None. Otherwise, a default set of properties |
| 399 |
(2) check if the value exists as a single value |
is created such that: line color = Black, line width = 1, |
| 400 |
(3) check if the value falls within a range. Ranges |
and fill color = Transparent |
| 401 |
are checked in the order they were added to |
""" |
| 402 |
the classification. |
|
| 403 |
|
#self.stroke = None |
| 404 |
|
#self.strokeWidth = 0 |
| 405 |
|
#self.fill = None |
| 406 |
|
|
| 407 |
|
if props is not None: |
| 408 |
|
self.SetProperties(props) |
| 409 |
|
else: |
| 410 |
|
self.SetLineColor(Black) |
| 411 |
|
self.SetLineWidth(1) |
| 412 |
|
self.SetFill(Transparent) |
| 413 |
|
|
| 414 |
|
def SetProperties(self, props): |
| 415 |
|
"""Set this class's properties to those in class props.""" |
| 416 |
|
|
| 417 |
|
assert isinstance(props, ClassGroupProperties) |
| 418 |
|
self.SetLineColor(props.GetLineColor()) |
| 419 |
|
self.SetLineWidth(props.GetLineWidth()) |
| 420 |
|
self.SetFill(props.GetFill()) |
| 421 |
|
|
| 422 |
|
def GetLineColor(self): |
| 423 |
|
"""Return the line color as a Color object.""" |
| 424 |
|
return self.__stroke |
| 425 |
|
|
| 426 |
value -- the value to classify. If there is no mapping |
def SetLineColor(self, color): |
| 427 |
return the NullData (which may be None) |
"""Set the line color. |
| 428 |
|
|
| 429 |
|
color -- the color of the line. This must be a Color object. |
| 430 |
""" |
""" |
| 431 |
|
|
| 432 |
if self.field is not None: |
self.__stroke = color |
|
# |
|
|
# first check the discrete values |
|
|
# |
|
|
if self.points.has_key(value): |
|
|
return self.points[value] |
|
| 433 |
|
|
| 434 |
# |
def GetLineWidth(self): |
| 435 |
# now check the ranges |
"""Return the line width.""" |
| 436 |
# |
return self.__strokeWidth |
| 437 |
for p in self.ranges: |
|
| 438 |
if (p[RANGE_MIN] <= value) and (value < p[RANGE_MAX]): |
def SetLineWidth(self, lineWidth): |
| 439 |
return p[RANGE_DATA] |
"""Set the line width. |
| 440 |
|
|
| 441 |
|
lineWidth -- the new line width. This must be > 0. |
| 442 |
|
""" |
| 443 |
|
assert isinstance(lineWidth, types.IntType) |
| 444 |
|
if (lineWidth < 1): |
| 445 |
|
raise ValueError(_("lineWidth < 1")) |
| 446 |
|
|
| 447 |
|
self.__strokeWidth = lineWidth |
| 448 |
|
|
| 449 |
|
def GetFill(self): |
| 450 |
|
"""Return the fill color as a Color object.""" |
| 451 |
|
return self.__fill |
| 452 |
|
|
| 453 |
|
def SetFill(self, fill): |
| 454 |
|
"""Set the fill color. |
| 455 |
|
|
| 456 |
|
fill -- the color of the fill. This must be a Color object. |
| 457 |
|
""" |
| 458 |
|
|
| 459 |
|
self.__fill = fill |
| 460 |
|
|
| 461 |
|
def __eq__(self, other): |
| 462 |
|
"""Return true if 'props' has the same attributes as this class""" |
| 463 |
|
|
| 464 |
|
# |
| 465 |
|
# using 'is' over '==' results in a huge performance gain |
| 466 |
|
# in the renderer |
| 467 |
|
# |
| 468 |
|
return isinstance(other, ClassGroupProperties) \ |
| 469 |
|
and (self.__stroke is other.__stroke or \ |
| 470 |
|
self.__stroke == other.__stroke) \ |
| 471 |
|
and (self.__fill is other.__fill or \ |
| 472 |
|
self.__fill == other.__fill) \ |
| 473 |
|
and self.__strokeWidth == other.__strokeWidth |
| 474 |
|
|
| 475 |
|
def __ne__(self, other): |
| 476 |
|
return not self.__eq__(other) |
| 477 |
|
|
| 478 |
|
def __copy__(self): |
| 479 |
|
return ClassGroupProperties(self) |
| 480 |
|
|
| 481 |
|
def __deepcopy__(self): |
| 482 |
|
return ClassGroupProperties(self) |
| 483 |
|
|
| 484 |
|
def __repr__(self): |
| 485 |
|
return repr((self.__stroke, self.__strokeWidth, self.__fill)) |
| 486 |
|
|
| 487 |
|
class ClassGroup: |
| 488 |
|
"""A base class for all Groups within a Classification""" |
| 489 |
|
|
| 490 |
|
def __init__(self, label = "", props = None, group = None): |
| 491 |
|
"""Constructor. |
| 492 |
|
|
| 493 |
|
label -- A string representing the Group's label |
| 494 |
|
""" |
| 495 |
|
|
| 496 |
|
if group is not None: |
| 497 |
|
self.SetLabel(copy.copy(group.GetLabel())) |
| 498 |
|
self.SetProperties(copy.copy(group.GetProperties())) |
| 499 |
|
self.SetVisible(group.IsVisible()) |
| 500 |
|
else: |
| 501 |
|
self.SetLabel(label) |
| 502 |
|
self.SetProperties(props) |
| 503 |
|
self.SetVisible(True) |
| 504 |
|
|
| 505 |
|
def GetLabel(self): |
| 506 |
|
"""Return the Group's label.""" |
| 507 |
|
return self.label |
| 508 |
|
|
| 509 |
|
def SetLabel(self, label): |
| 510 |
|
"""Set the Group's label. |
| 511 |
|
|
| 512 |
|
label -- a string representing the Group's label. This must |
| 513 |
|
not be None. |
| 514 |
|
""" |
| 515 |
|
assert isinstance(label, types.StringTypes) |
| 516 |
|
self.label = label |
| 517 |
|
|
| 518 |
|
def GetDisplayText(self): |
| 519 |
|
assert False, "GetDisplay must be overridden by subclass!" |
| 520 |
|
return "" |
| 521 |
|
|
| 522 |
|
def Matches(self, value): |
| 523 |
|
"""Determines if this Group is associated with the given value. |
| 524 |
|
|
| 525 |
|
Returns False. This needs to be overridden by all subclasses. |
| 526 |
|
""" |
| 527 |
|
assert False, "GetMatches must be overridden by subclass!" |
| 528 |
|
return False |
| 529 |
|
|
| 530 |
|
def GetProperties(self): |
| 531 |
|
"""Return the properties associated with the given value.""" |
| 532 |
|
|
| 533 |
|
return self.prop |
| 534 |
|
|
| 535 |
|
def SetProperties(self, prop): |
| 536 |
|
"""Set the properties associated with this Group. |
| 537 |
|
|
| 538 |
|
prop -- a ClassGroupProperties object. if prop is None, |
| 539 |
|
a default set of properties is created. |
| 540 |
|
""" |
| 541 |
|
|
| 542 |
|
if prop is None: prop = ClassGroupProperties() |
| 543 |
|
assert isinstance(prop, ClassGroupProperties) |
| 544 |
|
self.prop = prop |
| 545 |
|
|
| 546 |
|
def IsVisible(self): |
| 547 |
|
return self.visible |
| 548 |
|
|
| 549 |
|
def SetVisible(self, visible): |
| 550 |
|
self.visible = visible |
| 551 |
|
|
| 552 |
|
def __eq__(self, other): |
| 553 |
|
return isinstance(other, ClassGroup) \ |
| 554 |
|
and self.label == other.label \ |
| 555 |
|
and self.GetProperties() == other.GetProperties() |
| 556 |
|
|
| 557 |
|
def __ne__(self, other): |
| 558 |
|
return not self.__eq__(other) |
| 559 |
|
|
| 560 |
|
def __repr__(self): |
| 561 |
|
return repr(self.label) + ", " + repr(self.GetProperties()) |
| 562 |
|
|
| 563 |
|
class ClassGroupSingleton(ClassGroup): |
| 564 |
|
"""A Group that is associated with a single value.""" |
| 565 |
|
|
| 566 |
|
def __init__(self, value = 0, props = None, label = "", group = None): |
| 567 |
|
"""Constructor. |
| 568 |
|
|
| 569 |
|
value -- the associated value. |
| 570 |
|
|
| 571 |
|
prop -- a ClassGroupProperites object. If prop is None a default |
| 572 |
|
set of properties is created. |
| 573 |
|
|
| 574 |
|
label -- a label for this group. |
| 575 |
|
""" |
| 576 |
|
ClassGroup.__init__(self, label, props, group) |
| 577 |
|
|
| 578 |
|
self.SetValue(value) |
| 579 |
|
|
| 580 |
|
def __copy__(self): |
| 581 |
|
return ClassGroupSingleton(self.GetValue(), |
| 582 |
|
self.GetProperties(), |
| 583 |
|
self.GetLabel()) |
| 584 |
|
|
| 585 |
|
def __deepcopy__(self, memo): |
| 586 |
|
return ClassGroupSingleton(self.GetValue(), group = self) |
| 587 |
|
|
| 588 |
|
def GetValue(self): |
| 589 |
|
"""Return the associated value.""" |
| 590 |
|
return self.__value |
| 591 |
|
|
| 592 |
|
def SetValue(self, value): |
| 593 |
|
"""Associate this Group with the given value.""" |
| 594 |
|
self.__value = value |
| 595 |
|
|
| 596 |
|
def Matches(self, value): |
| 597 |
|
"""Determine if the given value matches the associated Group value.""" |
| 598 |
|
|
| 599 |
|
"""Returns True if the value matches, False otherwise.""" |
| 600 |
|
|
| 601 |
|
return self.__value == value |
| 602 |
|
|
| 603 |
|
def GetDisplayText(self): |
| 604 |
|
label = self.GetLabel() |
| 605 |
|
|
| 606 |
|
if label != "": return label |
| 607 |
|
|
| 608 |
|
return str(self.GetValue()) |
| 609 |
|
|
| 610 |
|
def __eq__(self, other): |
| 611 |
|
return ClassGroup.__eq__(self, other) \ |
| 612 |
|
and isinstance(other, ClassGroupSingleton) \ |
| 613 |
|
and self.__value == other.__value |
| 614 |
|
|
| 615 |
|
def __repr__(self): |
| 616 |
|
return "(" + repr(self.__value) + ", " + ClassGroup.__repr__(self) + ")" |
| 617 |
|
|
| 618 |
|
class ClassGroupDefault(ClassGroup): |
| 619 |
|
"""The default Group. When values do not match any other |
| 620 |
|
Group within a Classification, the properties from this |
| 621 |
|
class are used.""" |
| 622 |
|
|
| 623 |
|
def __init__(self, props = None, label = "", group = None): |
| 624 |
|
"""Constructor. |
| 625 |
|
|
| 626 |
|
prop -- a ClassGroupProperites object. If prop is None a default |
| 627 |
|
set of properties is created. |
| 628 |
|
|
| 629 |
|
label -- a label for this group. |
| 630 |
|
""" |
| 631 |
|
|
| 632 |
|
ClassGroup.__init__(self, label, props, group) |
| 633 |
|
|
| 634 |
|
def __copy__(self): |
| 635 |
|
return ClassGroupDefault(self.GetProperties(), self.GetLabel()) |
| 636 |
|
|
| 637 |
|
def __deepcopy__(self, memo): |
| 638 |
|
return ClassGroupDefault(label = self.GetLabel(), group = self) |
| 639 |
|
|
| 640 |
|
def Matches(self, value): |
| 641 |
|
return True |
| 642 |
|
|
| 643 |
|
def GetDisplayText(self): |
| 644 |
|
label = self.GetLabel() |
| 645 |
|
|
| 646 |
|
if label != "": return label |
| 647 |
|
|
| 648 |
|
return _("DEFAULT") |
| 649 |
|
|
| 650 |
|
def __eq__(self, other): |
| 651 |
|
return ClassGroup.__eq__(self, other) \ |
| 652 |
|
and isinstance(other, ClassGroupDefault) \ |
| 653 |
|
and self.GetProperties() == other.GetProperties() |
| 654 |
|
|
| 655 |
|
def __repr__(self): |
| 656 |
|
return "(" + ClassGroup.__repr__(self) + ")" |
| 657 |
|
|
| 658 |
|
class ClassGroupRange(ClassGroup): |
| 659 |
|
"""A Group that represents a range of values that map to the same |
| 660 |
|
set of properties.""" |
| 661 |
|
|
| 662 |
|
def __init__(self, min = 0, max = 1, props = None, label = "", group=None): |
| 663 |
|
"""Constructor. |
| 664 |
|
|
| 665 |
|
The minumum value must be strictly less than the maximum. |
| 666 |
|
|
| 667 |
|
min -- the minimum range value |
| 668 |
|
|
| 669 |
|
max -- the maximum range value |
| 670 |
|
|
| 671 |
|
prop -- a ClassGroupProperites object. If prop is None a default |
| 672 |
|
set of properties is created. |
| 673 |
|
|
| 674 |
|
label -- a label for this group. |
| 675 |
|
""" |
| 676 |
|
|
| 677 |
|
ClassGroup.__init__(self, label, props, group) |
| 678 |
|
|
| 679 |
|
#self.__min = self.__max = 0 |
| 680 |
|
#self.__range = Range("[" + repr(float(min)) + ";" + |
| 681 |
|
#repr(float(max)) + "[") |
| 682 |
|
self.SetRange(min, max) |
| 683 |
|
|
| 684 |
|
def __copy__(self): |
| 685 |
|
return ClassGroupRange(min = self.__range, |
| 686 |
|
max = None, |
| 687 |
|
props = self.GetProperties(), |
| 688 |
|
label = self.GetLabel()) |
| 689 |
|
|
| 690 |
|
def __deepcopy__(self, memo): |
| 691 |
|
return ClassGroupRange(min = copy.copy(self.__range), |
| 692 |
|
max = copy.copy(self.GetMax()), |
| 693 |
|
group = self) |
| 694 |
|
|
| 695 |
|
def GetMin(self): |
| 696 |
|
"""Return the range's minimum value.""" |
| 697 |
|
return self.__range.GetRange()[1] |
| 698 |
|
|
| 699 |
|
def SetMin(self, min): |
| 700 |
|
"""Set the range's minimum value. |
| 701 |
|
|
| 702 |
|
min -- the new minimum. Note that this must be less than the current |
| 703 |
|
maximum value. Use SetRange() to change both min and max values. |
| 704 |
|
""" |
| 705 |
|
|
| 706 |
|
self.SetRange(min, self.__range.GetRange()[2]) |
| 707 |
|
|
| 708 |
|
def GetMax(self): |
| 709 |
|
"""Return the range's maximum value.""" |
| 710 |
|
return self.__range.GetRange()[2] |
| 711 |
|
|
| 712 |
|
def SetMax(self, max): |
| 713 |
|
"""Set the range's maximum value. |
| 714 |
|
|
| 715 |
|
max -- the new maximum. Note that this must be greater than the current |
| 716 |
|
minimum value. Use SetRange() to change both min and max values. |
| 717 |
|
""" |
| 718 |
|
self.SetRange(self.__range.GetRange()[1], max) |
| 719 |
|
|
| 720 |
|
def SetRange(self, min, max = None): |
| 721 |
|
"""Set a new range. |
| 722 |
|
|
| 723 |
|
Note that min must be strictly less than max. |
| 724 |
|
|
| 725 |
|
min -- the new minimum value |
| 726 |
|
min -- the new maximum value |
| 727 |
|
""" |
| 728 |
|
|
| 729 |
|
if isinstance(min, Range): |
| 730 |
|
self.__range = min |
| 731 |
|
else: |
| 732 |
|
if max is None: |
| 733 |
|
raise ValueError() |
| 734 |
|
|
| 735 |
|
self.__range = Range(("[", min, max, "[")) |
| 736 |
|
|
| 737 |
|
def GetRange(self): |
| 738 |
|
"""Return the range as a string""" |
| 739 |
|
#return (self.__min, self.__max) |
| 740 |
|
return self.__range.string(self.__range.GetRange()) |
| 741 |
|
|
| 742 |
|
def Matches(self, value): |
| 743 |
|
"""Determine if the given value lies with the current range. |
| 744 |
|
|
| 745 |
|
The following check is used: min <= value < max. |
| 746 |
|
""" |
| 747 |
|
|
| 748 |
|
return operator.contains(self.__range, value) |
| 749 |
|
#return self.__min <= value < self.__max |
| 750 |
|
|
| 751 |
|
def GetDisplayText(self): |
| 752 |
|
label = self.GetLabel() |
| 753 |
|
|
| 754 |
|
if label != "": return label |
| 755 |
|
|
| 756 |
|
#return _("%s - %s") % (self.GetMin(), self.GetMax()) |
| 757 |
|
#return repr(self.__range) |
| 758 |
|
return self.__range.string(self.__range.GetRange()) |
| 759 |
|
|
| 760 |
|
def __eq__(self, other): |
| 761 |
|
return ClassGroup.__eq__(self, other) \ |
| 762 |
|
and isinstance(other, ClassGroupRange) \ |
| 763 |
|
and self.__range == other.__range |
| 764 |
|
#and self.__min == other.__min \ |
| 765 |
|
#and self.__max == other.__max |
| 766 |
|
|
| 767 |
|
def __repr__(self): |
| 768 |
|
return "(" + str(self.__range) + ClassGroup.__repr__(self) + ")" |
| 769 |
|
#return "(" + repr(self.__min) + ", " + repr(self.__max) + ", " + \ |
| 770 |
|
#ClassGroup.__repr__(self) + ")" |
| 771 |
|
|
| 772 |
|
class ClassGroupMap(ClassGroup): |
| 773 |
|
"""Currently, this class is not used.""" |
| 774 |
|
|
| 775 |
|
FUNC_ID = "id" |
| 776 |
|
|
| 777 |
|
def __init__(self, map_type = FUNC_ID, func = None, prop = None, label=""): |
| 778 |
|
ClassGroup.__init__(self, label) |
| 779 |
|
|
| 780 |
|
self.map_type = map_type |
| 781 |
|
self.func = func |
| 782 |
|
|
| 783 |
|
if self.func is None: |
| 784 |
|
self.func = func_id |
| 785 |
|
|
| 786 |
|
def Map(self, value): |
| 787 |
|
return self.func(value) |
| 788 |
|
|
| 789 |
|
def GetProperties(self): |
| 790 |
|
return None |
| 791 |
|
|
| 792 |
|
def GetPropertiesFromValue(self, value): |
| 793 |
|
pass |
| 794 |
|
|
| 795 |
return self.NullData |
def GetDisplayText(self): |
| 796 |
|
return "Map: " + self.map_type |
| 797 |
|
|
| 798 |
|
# |
| 799 |
|
# built-in mappings |
| 800 |
|
# |
| 801 |
|
def func_id(value): |
| 802 |
|
return value |
| 803 |
|
|
Parent Directory
| 
Revision Log
| 
Patch