jschuengel: thuban/Extensions/umn_mapserver mf_export.py,1.7,1.8

[cvs@intevation.de]

Author: jschuengel

Update of /thubanrepository/thuban/Extensions/umn_mapserver
In directory doto:/tmp/cvs-serv13333/Extensions/umn_mapserver

Modified Files:
	mf_export.py 
Log Message:
(tb_layer_to_map): Add all layers which are exists in thuban to the mapobj. All removed Layers will be removed from the mapobj. 
Added comments to all functions.
(thuban_to_map): No layer will be removed here.


Index: mf_export.py
===================================================================
RCS file: /thubanrepository/thuban/Extensions/umn_mapserver/mf_export.py,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -d -r1.7 -r1.8
--- mf_export.py	3 Aug 2004 11:56:08 -0000	1.7
+++ mf_export.py	9 Aug 2004 11:39:37 -0000	1.8
@@ -52,6 +52,9 @@
 # ###################################
 
 def tbproj_to_map(tb_map, map):
+    """
+    set the projection from thuban to the mapscript
+    """
     # TODO: epsg code support
     # epsg will convert to parameters at the moment
     tb_proj = tb_map.GetProjection()
@@ -59,11 +62,34 @@
         map.set_projection(tb_proj)
     
 def tblayer_to_map(tb_map, map):
+    """
+    added all layers which are displayed in thuban to the mapscript
+    if the are new, else use the associated mapobjects.
+    All other layers will be removed
+    """
     tb_layers = tb_map.Layers()
+    oldindex = map.get_layerorder()
+    indexlist = []
     for layer in tb_layers:
         map.add_thubanlayer(layer)
+        layind = layer.extension_umn_layerobj.get_index()
+        indexlist.append(layind)
+    bigint = 0
+    for rmnr in oldindex:
+        if rmnr > bigint:
+            bigint = rmnr
+    removelist = []
+    for rnr in range(0, bigint+1, 1):
+        if rnr not in indexlist:
+            removelist.append(rnr)
+    for i in removelist:
+        map.remove_layer(i)
+    map.set_layerorder(tuple(indexlist))
 
 def thuban_to_map(tb_context, map):
+    """
+    add all context from thuban to the mapscript
+    """
     # get the thuban map
     tb_map = tb_context.mainwindow.canvas.Map()
     # set the title
@@ -78,6 +104,9 @@
     tblayer_to_map(tb_map, map)
 
 def add_circle_symbol(map):
+    """
+    Added a circle object like the one shown in thuban
+    """
     if map.get_symbolset().get_symbol(1):
         return
     else:
@@ -88,6 +117,10 @@
         map.get_symbolset().add_symbol(new_symbol)
 
 def write_creatorcomment(path,file):
+    """
+    Added a short comment to the created map file to show
+    that the file is generated automatic
+    """
     thuban_umn_comment = "# \n" + \
                                 "# Map file generated by Thuban (umn_mapserver Extension) \n" + \
                                 "# \n \n"
@@ -104,11 +137,12 @@
     
     
 def export_mapfile(context):
-    
+    """
+    Exports an existing mapobj and set all stuff from thuban to
+    the mapobj
+    """
     theMap = context.mainwindow.canvas.Map().extension_umn_mapobj
     
-    theMap.remove_all_layers()
-    
     dlg = wxFileDialog(context.mainwindow, "Save file as...", ".", "", 
                        "UMN MapServer Mapfiles (*.map)|*.map|"     \
                        "All files (*.*)|*.*",
@@ -141,7 +175,6 @@
 def _has_umn_mapobj(context):
     """Return true if a umn_mapobj exists"""
     return hasattr(context.mainwindow.canvas.Map(), "extension_umn_mapobj")
-
  
 # ###################################
 #