/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/save.py
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revision 429 by jonathan, Mon Feb 24 18:46:51 2003 UTC revision 454 by bh, Tue Mar 4 11:31:47 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002 by Intevation GmbH  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
# Line 13  Functions to save a session to a file Line 13  Functions to save a session to a file
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    
16    # fix for people using python2.1
17    from __future__ import nested_scopes
18    
19  import os  import os
20  import string  import string
21    
# Line 54  class Saver: Line 57  class Saver:
57      """Class to serialize a session into an XML file.      """Class to serialize a session into an XML file.
58    
59      Applications built on top of Thuban may derive from this class and      Applications built on top of Thuban may derive from this class and
60      override or extend the methods to save additinal information. This      override or extend the methods to save additional information. This
61      additional information should take the form of additional attributes      additional information should take the form of additional attributes
62      or elements whose names are prefixed with a namespace. To define a      or elements whose names are prefixed with a namespace. To define a
63      namespace derived classes should extend the write_session method to      namespace derived classes should extend the write_session method to
# Line 100  class Saver: Line 103  class Saver:
103    
104      def write_attribs(self, attrs):      def write_attribs(self, attrs):
105          for name, value in attrs.items():          for name, value in attrs.items():
106              self.file.write(' %s="%s"' % (escape(name), value))              self.file.write(' %s="%s"' % (escape(name), escape(value)))
107            
108      def open_element(self, element, attrs = {}):      def open_element(self, element, attrs = {}):
109    
# Line 240  class Saver: Line 243  class Saver:
243                            
244          # just playing now with lambdas and dictionaries          # just playing now with lambdas and dictionaries
245    
246          types = {ClassData.DEFAULT:          types = [[lambda p: 'clnull',
247                       [lambda p: 'clnull',                    lambda p: 'clnull'],
248                        lambda p: 'clnull'],                   [lambda p: 'clpoint value="%s"' %
249                   ClassData.POINT:                               str(p.GetValue()),
250                       [lambda p: 'clpoint value="%s"' %                    lambda p: 'clpoint'],
251                                   str(p.GetValue()),                   [lambda p: 'clrange min="%s" max="%s"' %
252                        lambda p: 'clpoint'],                               (str(p.GetMin()),
253                   ClassData.RANGE:                                (str(p.GetMax()))),
254                       [lambda p: 'clrange min="%s" max="%s"' %                    lambda p: 'clrange']]
255                                   (str(p.GetMin()),  
256                                    (str(p.GetMax()))),          def write_class_group(group):
257                        lambda p: 'clrange']}              type = -1
258                if isinstance(group, ClassGroupDefault): type = 0
259          def write_class_data(data):              elif isinstance(group, ClassGroupSingleton): type = 1
260              dict = {'stroke'      : data.GetStroke().hex(),              elif isinstance(group, ClassGroupRange): type = 2
261                      'stroke_width': str(data.GetStrokeWidth()),              elif isinstance(group, ClassGroupMap):   type = 3
262                      'fill'        : data.GetFill().hex()}              assert(type >= 0)
263              t = data.GetType()  
264              self.open_element(types[t][0](data))              if type <= 2:
265              self.write_element("cldata", dict)                  data = group.GetProperties()
266              self.close_element(types[t][1](data))                  dict = {'stroke'      : data.GetStroke().hex(),
267                            'stroke_width': str(data.GetStrokeWidth()),
268                            'fill'        : data.GetFill().hex()}
269    
270                    self.open_element(types[type][0](group))
271                    self.write_element("cldata", dict)
272                    self.close_element(types[type][1](group))
273                else: pass # XXX: we need to handle maps
274    
275          for i in lc:          for i in lc:
276              write_class_data(i)              write_class_group(i)
277    
278  #       for i in lc:  #       for i in lc:
279  #           t = i.GetType()  #           t = i.GetType()
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