/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/map.py
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revision 374 by jan, Mon Jan 27 14:20:02 2003 UTC revision 559 by jonathan, Wed Mar 26 11:05:33 2003 UTC
# Line 7  Line 7 
7    
8  __version__ = "$Revision$"  __version__ = "$Revision$"
9    
10  from messages import LAYERS_CHANGED, MAP_PROJECTION_CHANGED, \  #from messages import MAP_LAYERS_CHANGED, MAP_PROJECTION_CHANGED, \
11       CHANGED, LAYER_PROJECTION_CHANGED, LAYER_LEGEND_CHANGED, \       #CHANGED, LAYER_PROJECTION_CHANGED, LAYER_LEGEND_CHANGED, \
12       LAYER_VISIBILITY_CHANGED       #LAYER_VISIBILITY_CHANGED
13    
14    from messages import *
15    
16  from Thuban import _  from Thuban import _
17    
# Line 27  class Map(TitledObject, Modifiable): Line 29  class Map(TitledObject, Modifiable):
29    
30          TITLE_CHANGED -- The title has changed. Parameter: the map.          TITLE_CHANGED -- The title has changed. Parameter: the map.
31    
32          LAYERS_CHANGED -- Layers were added, removed or rearranged.          MAP_LAYERS_CHANGED -- Layers were added, removed or rearranged.
33                          Parameters: the map                          Parameters: the map
34    
35          MAP_PROJECTION_CHANGED -- the map's projection has changed.          MAP_PROJECTION_CHANGED -- the map's projection has changed.
# Line 37  class Map(TitledObject, Modifiable): Line 39  class Map(TitledObject, Modifiable):
39      forwarded_channels = (CHANGED,      forwarded_channels = (CHANGED,
40                            LAYER_PROJECTION_CHANGED,                            LAYER_PROJECTION_CHANGED,
41                            LAYER_LEGEND_CHANGED,                            LAYER_LEGEND_CHANGED,
42                              LAYER_CHANGED,
43                            LAYER_VISIBILITY_CHANGED)                            LAYER_VISIBILITY_CHANGED)
44    
45      def __init__(self, title, projection = None):      def __init__(self, title, projection = None):
# Line 45  class Map(TitledObject, Modifiable): Line 48  class Map(TitledObject, Modifiable):
48          Modifiable.__init__(self)          Modifiable.__init__(self)
49          self.layers = []          self.layers = []
50          self.label_layer = LabelLayer(_("Labels"))          self.label_layer = LabelLayer(_("Labels"))
51          self.label_layer.Subscribe(CHANGED, self.forward, LAYERS_CHANGED)          self.label_layer.Subscribe(CHANGED, self.forward, MAP_LAYERS_CHANGED)
52          self.projection = projection          self.projection = projection
53    
54      def Destroy(self):      def Destroy(self):
# Line 55  class Map(TitledObject, Modifiable): Line 58  class Map(TitledObject, Modifiable):
58          # cause problems.          # cause problems.
59          Modifiable.Destroy(self)          Modifiable.Destroy(self)
60          self.ClearLayers()          self.ClearLayers()
61          self.label_layer.Unsubscribe(CHANGED, self.forward, LAYERS_CHANGED)          self.label_layer.Unsubscribe(CHANGED, self.forward, MAP_LAYERS_CHANGED)
62          self.label_layer.Destroy()          self.label_layer.Destroy()
63    
64      def AddLayer(self, layer):      def AddLayer(self, layer):
65          """Append layer to the map on top opf all."""          """Append layer to the map on top opf all."""
66          self.layers.append(layer)          self.layers.append(layer)
67          self.subscribe_layer_channels(layer)          self.subscribe_layer_channels(layer)
68          self.changed(LAYERS_CHANGED, self)          self.changed(MAP_LAYERS_CHANGED, self)
69            self.changed(MAP_LAYERS_ADDED, self)
70    
71      def RemoveLayer(self, layer):      def RemoveLayer(self, layer):
72          """Remove layer from the map."""          """Remove layer from the map."""
73          self.unsubscribe_layer_channels(layer)          self.unsubscribe_layer_channels(layer)
74          self.layers.remove(layer)          self.layers.remove(layer)
75          self.changed(LAYERS_CHANGED, self)          self.changed(MAP_LAYERS_CHANGED, self)
76            self.changed(MAP_LAYERS_REMOVED, self)
77          layer.Destroy()          layer.Destroy()
78    
79      def CanRemoveLayer(self, layer):      def CanRemoveLayer(self, layer):
# Line 87  class Map(TitledObject, Modifiable): Line 92  class Map(TitledObject, Modifiable):
92              layer.Destroy()              layer.Destroy()
93          del self.layers[:]          del self.layers[:]
94          self.label_layer.ClearLabels()          self.label_layer.ClearLabels()
95          self.changed(LAYERS_CHANGED, self)          self.changed(MAP_LAYERS_CHANGED, self)
96            self.changed(MAP_LAYERS_REMOVED, self)
97    
98      def subscribe_layer_channels(self, layer):      def subscribe_layer_channels(self, layer):
99          """Subscribe to some of layer's channels."""          """Subscribe to some of layer's channels."""
# Line 117  class Map(TitledObject, Modifiable): Line 123  class Map(TitledObject, Modifiable):
123          """Swap the layer with the one above it.          """Swap the layer with the one above it.
124    
125          If the layer is already at the top do nothing. If the stacking          If the layer is already at the top do nothing. If the stacking
126          order has been changed, issue a LAYERS_CHANGED message.          order has been changed, issue a MAP_LAYERS_CHANGED message.
127          """          """
128          index = self.layers.index(layer)          index = self.layers.index(layer)
129          if index < len(self.layers) - 1:          if index < len(self.layers) - 1:
130              del self.layers[index]              del self.layers[index]
131              self.layers.insert(index + 1, layer)              self.layers.insert(index + 1, layer)
132              self.changed(LAYERS_CHANGED, self)              self.changed(MAP_LAYERS_CHANGED, self)
133                self.changed(MAP_STACKING_CHANGED, self)
134    
135      def LowerLayer(self, layer):      def LowerLayer(self, layer):
136          """Swap the layer with the one below it.          """Swap the layer with the one below it.
137    
138          If the layer is already at the bottom do nothing. If the          If the layer is already at the bottom do nothing. If the
139          stacking order has been changed, issue a LAYERS_CHANGED message.          stacking order has been changed, issue a MAP_LAYERS_CHANGED message.
140          """          """
141          index = self.layers.index(layer)          index = self.layers.index(layer)
142          if index > 0:          if index > 0:
143              del self.layers[index]              del self.layers[index]
144              self.layers.insert(index - 1, layer)              self.layers.insert(index - 1, layer)
145              self.changed(LAYERS_CHANGED, self)              self.changed(MAP_LAYERS_CHANGED, self)
146                self.changed(MAP_STACKING_CHANGED, self)
147    
148      def BoundingBox(self):      def BoundingBox(self):
149          """Return the bounding box of the map in Lat/Lon coordinates.          """Return the bounding box of the map in Lat/Lon coordinates.
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