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more mapserver goodness
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git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@5737 c8812cc2-4d05-0410-92ff-de0c093fc19c
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gsherman committed Aug 26, 2006
1 parent 5fcee18 commit a144969
Showing 1 changed file with 78 additions and 11 deletions.
89 changes: 78 additions & 11 deletions tools/mapserver_export/ms_export.py
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Expand Up @@ -9,6 +9,8 @@
import sys, string
from xml.dom import minidom, Node

# symbol map
qgisSymbols = {'hard:circle': 'CIRCLE'}
class Qgis2Map:
def __init__(self, projectFile, mapFile):
self.project = projectFile
Expand Down Expand Up @@ -61,7 +63,8 @@ def writeMapFile(self):
# write the LAYER sections
self.writeMapLayers()

# close the map file
# END and close the map file
self.outFile.write("END")
self.outFile.close()

ret = "Writing the map file using " + self.project + " " + self.mapFile
Expand All @@ -77,7 +80,7 @@ def writeMapSection(self):
self.outFile.write(" NAME " + self.mapName + "\n")
self.outFile.write(" # Map image size\n")
self.outFile.write(" SIZE " + self.width + " " + self.height + "\n")
self.outFile.write(" UNITS '" + self.units + "'\n")
self.outFile.write(" UNITS " + self.units.lower() + "\n")
self.outFile.write("\n")
# extents
xmin = self.qgs.getElementsByTagName("xmin")
Expand All @@ -97,7 +100,7 @@ def writeMapSection(self):
# Write the OUTPUTFORMAT section
def writeOutputFormat(self):
self.outFile.write(" # Background color for the map canvas -- change as desired\n")
self.outFile.write(" IMAGECOLOR 255 255 255\n")
self.outFile.write(" IMAGECOLOR 192 192 192\n")
self.outFile.write(" IMAGETYPE " + self.imageType + "\n")
self.outFile.write(" OUTPUTFORMAT\n")
self.outFile.write(" NAME " + self.imageType + "\n")
Expand Down Expand Up @@ -155,30 +158,34 @@ def writeWebSection(self):
self.outFile.write(" # Template and header/footer settings\n")
self.outFile.write(" # Only the template parameter is required to display a map. See MapServer documentation\n")

self.outFile.write(" TEMPLATE " + self.template + "\n")
self.outFile.write(" HEADER " + self.header + "\n")
self.outFile.write(" FOOTER " + self.footer + "\n")
self.outFile.write(" TEMPLATE '" + self.template + "'\n")
self.outFile.write(" HEADER '" + self.header + "'\n")
self.outFile.write(" FOOTER '" + self.footer + "'\n")
self.outFile.write(" END\n")

# Write the map layers
def writeMapLayers(self):
# get the list of maplayer nodes
maplayers = self.qgs.getElementsByTagName("maplayer")
print "Processing ", len(maplayers), " layers"
count = 0
for lyr in maplayers:
count += 1
print "Processing layer ", count
# The attributes of the maplayer tag contain the scale dependent settings,
# visibility, and layer type

self.outFile.write(" LAYER\n")
# write the name of the layer
self.outFile.write(" NAME '" + lyr.getElementsByTagName("layername")[0].childNodes[0].nodeValue.encode() + "'\n")
self.outFile.write(" TYPE '" + lyr.getAttribute("geometry").encode() + "'\n")
self.outFile.write(" TYPE " + lyr.getAttribute("geometry").encode().upper() + "\n")
# data
self.outFile.write(" DATA '" + lyr.getElementsByTagName("datasource")[0].childNodes[0].nodeValue.encode() + "'\n")
self.outFile.write(" STATUS ON\n")
self.outFile.write(" PROJECTION\n")
proj4Text = lyr.getElementsByTagName("proj4")[0].childNodes[0].nodeValue.encode()
self.outFile.write(self.formatProj4(proj4Text))



self.outFile.write(" END\n")
scaleDependent = lyr.getAttribute("scaleBasedVisibilityFlag").encode()
if scaleDependent == '1':
# get the min and max scale settings
Expand All @@ -188,10 +195,70 @@ def writeMapLayers(self):
self.outFile.write(" MINSCALE " + minscale + "\n")
if maxscale > '':
self.outFile.write(" MAXSCALE " + maxscale + "\n")

# write the CLASS section for rendering
# First see if there is a single symbol renderer
if lyr.getElementsByTagName("singlesymbol").length > 0:
symbolNode = lyr.getElementsByTagName("singlesymbol")[0].getElementsByTagName('symbol')[0]
self.simpleRenderer(lyr, symbolNode)
elif lyr.getElementsByTagName("graduatedsymbol").length > 0:
self.graduatedRenderer(lyr, lyr.getElementsByTagName("graduatedsymbol")[0].getElementsByTagName('symbol')[0] )
# end of CLASS
self.outFile.write(" END\n")
# end of LAYER
self.outFile.write(" END\n")

# Simple renderer ouput
# We need the layer node and symbol node
def simpleRenderer(self, layerNode, symbolNode):
# symbology depends on the feature type and the .qgs file
# contains the same markup for a layer regardless of type
# so we infer a symbol type based on the geometry
geometry = layerNode.getAttribute("geometry").encode().upper()
if geometry == 'POLYGON':
symbol = '0'
elif geometry == 'LINE':
symbol = '0'
elif geometry == 'POINT':
symbol = qgisSymbols[symbolNode.getElementsByTagName('pointsymbol')[0].childNodes[0].nodeValue.encode()]

self.outFile.write(" CLASS\n")
# use the point symbol map to lookup the mapserver symbol type
self.outFile.write(" SYMBOL " + symbol + " \n")
self.outFile.write(" SIZE "
+ symbolNode.getElementsByTagName('pointsize')[0].childNodes[0].nodeValue.encode()
+ " \n")
# outline color
outlineNode = symbolNode.getElementsByTagName('outlinecolor')[0]
self.outFile.write(" OUTLINECOLOR "
+ outlineNode.getAttribute('red') + ' '
+ outlineNode.getAttribute('green') + ' '
+ outlineNode.getAttribute('blue')
+ "\n")
# color
colorNode = symbolNode.getElementsByTagName('fillcolor')[0]
self.outFile.write(" COLOR "
+ colorNode.getAttribute('red') + ' '
+ colorNode.getAttribute('green') + ' '
+ colorNode.getAttribute('blue')
+ "\n")


# Graduated symbol renderer output
def graduatedRenderer(self, layerNode, symbolNode):
# get the renderer field for building up the classes
classField = layerNode.getElementsByTagName('classificationattribute')[0].childNodes[0].nodeValue.encode()
# write the render item
self.outFile.write(" CLASSITEM " + classField + "\n")

# write the rendering info for each class
classes = layerNode.getElementsByTagName('symbol')
for cls in classes:
self.outFile.write(cls.getElementsByTagName('lowervalue')[0].childNodes[0].nodeValue.encode())



# do something here

# Utility method to format a proj4 text string into mapserver format
def formatProj4(self, proj4text):
parms = proj4text.split(" ")
Expand Down

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