* src/DataViews/_MapView.py: First badly hacked version of online map downloading.
svn: r6451
This commit is contained in:
Martin Hawlisch
parent
982105bc5d
commit
a8bc2ebc47
@ -1,3 +1,7 @@
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2006-04-26 Martin Hawlisch <Martin.Hawlisch@gmx.de>
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* src/DataViews/_MapView.py: First badly hacked version of online map
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downloading.
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2006-04-25 Alex Roitman <shura@gramps-project.org>
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* src/GrampsCfg.py (build_window_key): Remove, as there's no need
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to override the base class anymore.
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@ -30,6 +30,12 @@ import gc
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import logging
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import os
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import math
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import urllib
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import urllib2
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import tempfile
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from xml.dom.minidom import parseString as xmlStringParser
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use_online_map = False
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log = logging.getLogger(".")
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@ -72,7 +78,7 @@ glob_loc_data = [ # (Name, longitude, latitude)
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("Mannheim-Neckarau",8.48,49.45),
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("Gorxheimertal",8.73,49.53)]
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enable_debug = False
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enable_debug = True
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# Draws a map image and tries to allocate space in the correct aspect ratio
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@ -221,6 +227,93 @@ class MapTile:
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self.scale = None
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self.scaled_pixbuf = None
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class WMSMapTile:
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def __init__(self,capabilities):
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self.scaled_pixbuf = None
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self.capabilities_url = capabilities
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u_reader = urllib2.urlopen(self.capabilities_url)
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response_body = u_reader.read()
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u_reader.close()
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xml_doc = xmlStringParser( response_body)
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# validate name of root element
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e = xml_doc.documentElement
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if e.nodeName != "WMT_MS_Capabilities":
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print "unsupported Document type '%s'" % e.nodeName
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return None
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self.map_request_params = {}
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self.map_request_params["VERSION"] = e.getAttribute("version")
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self.map_request_params["REQUEST"] = "GetMap"
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self.map_request_params["SERVICE"] = "WMS"
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self.map_request_params["REQUEST"] = "GetMap"
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self.map_request_params["REQUEST"] = "GetMap"
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self.map_request_params["FORMAT"] = "image/png"
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self.map_request_params["SRS"] = "epsg:4326"
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self.map_request_params["LAYERS"] = ""
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# Child-nodes of root element
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for n in e.childNodes:
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if n.nodeName == "Service":
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# Parse Service header
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map_title = n.getElementsByTagName("Title")[0].firstChild.data
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print " MAP Title: %s" % map_title
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try:
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map_fees = e.getElementsByTagName("Fees")[0].firstChild.data
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except IndexError:
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map_fees = "-"
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print " MAP Fees: %s" % map_fees
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try:
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map_access_constraints = e.getElementsByTagName("AccessConstraints")[0].firstChild.data
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except IndexError:
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map_access_constraints = "-"
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print " MAP AccessConstraints: %s" % map_access_constraints
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elif n.nodeName == "Capability":
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# Parse Capabilities
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for n2 in n.childNodes:
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if n2.nodeName == "Request":
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t1 = n2.getElementsByTagName("GetMap")[0]
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t2 = t1.getElementsByTagName("DCPType")[0]
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t3 = t2.getElementsByTagName("HTTP")[0]
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t4 = t3.getElementsByTagName("Get")[0]
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t5 = t4.getElementsByTagName("OnlineResource")[0]
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self.map_get_url = t5.getAttribute("xlink:href")
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print(" Map Tile base url: %s" % self.map_get_url)
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elif n2.nodeName == "Layer":
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# parse Layers
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if not self._srs_is_supported(n2.getElementsByTagName("SRS")[0].firstChild.data):
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print "Layer coordinates not supported :-("
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return None
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layer_title = n2.getElementsByTagName("Title")[0].firstChild.data
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print " Layer: %s" % layer_title
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for n3 in n2.childNodes:
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if n3.nodeName == "Layer":
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# parse Layers
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layer_title = n3.getElementsByTagName("Title")[0].firstChild.data
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print " - Layer: %s" % layer_title
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if self.map_request_params["LAYERS"]:
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self.map_request_params["LAYERS"] += ","
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self.map_request_params["LAYERS"] += layer_title
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def _srs_is_supported( self, srs_string):
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list = srs_string.lower().split()
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if "epsg:4326" in list:
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return True
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return False
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def set_viewport( self, target_scale, x_in, y_in, w_in, h_in):
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self.scaled_map_x = x_in
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self.scaled_map_y = y_in
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self.scaled_map_pixel_w = int(w_in*target_scale)
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self.scaled_map_pixel_h = int(h_in*target_scale)
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self.map_request_params["BBOX"] = "%f,%f,%f,%f" % (x_in,y_in-h_in,x_in+w_in,y_in) # Neds to be set for request
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self.map_request_params["WIDTH"] = int(w_in*target_scale)
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self.map_request_params["HEIGHT"] = int(h_in*target_scale)
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params = urllib.urlencode(self.map_request_params)
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f = tempfile.NamedTemporaryFile()
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f_name = f.name
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urllib.urlretrieve(self.map_get_url+params,f_name)
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self.scaled_pixbuf = gtk.gdk.pixbuf_new_from_file(f_name)
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def free(self):
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pass
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# Zoomable map image
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class ZoomMap( gtk.DrawingArea):
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@ -241,6 +334,9 @@ class ZoomMap( gtk.DrawingArea):
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self.textlayout = self.create_pango_layout("")
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self.map_sources = {}
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self.initial_exposed = False
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if use_online_map:
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self.map_sources[0.0] = []
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self.map_sources[0.0].append(WMSMapTile("http://www2.demis.nl/wms/wms.asp?wms=WorldMap&VERSION=1.1.1&REQUEST=GetCapabilities"))
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def add_map_source( self,filename, x, y, w, h,pw,ph):
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tile = MapTile( filename, x, y, w, h, pw, ph)
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@ -411,7 +507,7 @@ class ZoomMap( gtk.DrawingArea):
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self.queue_draw()
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def zoom_in(self):
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self.magnifer = min( 500.0, self.magnifer * 1.5)
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self.magnifer = min( 1000.0, self.magnifer * 1.5)
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self.backbuf = None
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self.queue_draw()
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@ -557,6 +653,7 @@ class MapView(PageView.PageView):
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self.zoom_map = ZoomMap(
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gtk.gdk.pixbuf_new_from_file(os.path.join(const.image_dir,"bad.png")),
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gtk.gdk.pixbuf_new_from_file(os.path.join(const.image_dir,"good.png")))
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if not use_online_map:
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self.zoom_map.add_map_source('world.topo.200407.3x3200x1600_tile_0_0.jpg', -180,90, 45,45, 400,400)
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self.zoom_map.add_map_source('world.topo.200407.3x3200x1600_tile_0_1.jpg', -135,90, 45,45, 400,400)
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self.zoom_map.add_map_source('world.topo.200407.3x3200x1600_tile_0_2.jpg', -90,90, 45,45, 400,400)
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@ -601,7 +698,6 @@ class MapView(PageView.PageView):
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self.zoom_map.add_map_source('world.topo.200407.3x400x200.jpg', -180,90, 360,180, 400,200)
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self.zoom_map.add_map_source('world.topo.200407.3x128x60.jpg', -180,90, 360,180, 128,60)
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#self.zoom_map.add_map_source("europe_2_0.jpg",0,90,90,90,1024,1024)
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self.zoom_map.set_size_request(300,300)
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hbox.pack_start( self.zoom_map, True, True, 0)
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