Python mapnik.save_map_to_string函数代码示例

def test_arbitrary_parameters_attached_to_map():
    m = mapnik.Map(256,256)
    mapnik.load_map(m,'../data/good_maps/extra_arbitary_map_parameters.xml')
    eq_(len(m.parameters),5)
    eq_(m.parameters['key'],'value2')
    eq_(m.parameters['key3'],'value3')
    eq_(m.parameters['unicode'],u'iván')
    eq_(m.parameters['integer'],10)
    eq_(m.parameters['decimal'],.999)
    m2 = mapnik.Map(256,256)
    for k,v in m.parameters:
        m2.parameters.append(mapnik.Parameter(k,v))
    eq_(len(m2.parameters),5)
    eq_(m2.parameters['key'],'value2')
    eq_(m2.parameters['key3'],'value3')
    eq_(m2.parameters['unicode'],u'iván')
    eq_(m2.parameters['integer'],10)
    eq_(m2.parameters['decimal'],.999)
    map_string = mapnik.save_map_to_string(m)
    m3 = mapnik.Map(256,256)
    mapnik.load_map_from_string(m3,map_string)
    eq_(len(m3.parameters),5)
    eq_(m3.parameters['key'],'value2')
    eq_(m3.parameters['key3'],'value3')
    eq_(m3.parameters['unicode'],u'iván')
    eq_(m3.parameters['integer'],10)
    eq_(m3.parameters['decimal'],.999)

def test_arbitrary_parameters_attached_to_map():
    m = mapnik.Map(256, 256)
    mapnik.load_map(m, "../data/good_maps/extra_arbitary_map_parameters.xml")
    eq_(len(m.parameters), 5)
    eq_(m.parameters["key"], "value2")
    eq_(m.parameters["key3"], "value3")
    eq_(m.parameters["unicode"], u"iván")
    eq_(m.parameters["integer"], 10)
    eq_(m.parameters["decimal"], 0.999)
    m2 = mapnik.Map(256, 256)
    for k, v in m.parameters:
        m2.parameters.append(mapnik.Parameter(k, v))
    eq_(len(m2.parameters), 5)
    eq_(m2.parameters["key"], "value2")
    eq_(m2.parameters["key3"], "value3")
    eq_(m2.parameters["unicode"], u"iván")
    eq_(m2.parameters["integer"], 10)
    eq_(m2.parameters["decimal"], 0.999)
    map_string = mapnik.save_map_to_string(m)
    m3 = mapnik.Map(256, 256)
    mapnik.load_map_from_string(m3, map_string)
    eq_(len(m3.parameters), 5)
    eq_(m3.parameters["key"], "value2")
    eq_(m3.parameters["key3"], "value3")
    eq_(m3.parameters["unicode"], u"iván")
    eq_(m3.parameters["integer"], 10)
    eq_(m3.parameters["decimal"], 0.999)

def serialize(xml,options):
    try:
        import mapnik
    except:
        sys.exit(color_text(1,'Error: saving xml requires Mapnik python bindings to be installed'))
    m = mapnik.Map(1,1)
    if options.from_string:
        mapnik.load_map_from_string(m,xml,True)
    else:
        mapnik.load_map(m,xml,True)
    if options.output:
        mapnik.save_map(m,options.output)
    else:
        if hasattr(mapnik,'mapnik_version') and mapnik.mapnik_version() >= 700:
            print mapnik.save_map_to_string(m)
        else:
            sys.exit(color_text(1,'Minor error: printing XML to stdout requires Mapnik >=0.7.0, please provide a second argument to save the output to a file'))

def test_serializing_arbitrary_parameters():
    m = mapnik.Map(256,256)
    m.parameters.append(mapnik.Parameter('width',m.width))
    m.parameters.append(mapnik.Parameter('height',m.height))

    m2 = mapnik.Map(1,1)
    mapnik.load_map_from_string(m2,mapnik.save_map_to_string(m))
    eq_(m2.parameters['width'],m.width)
    eq_(m2.parameters['height'],m.height)

def test_load_save_map():
    map = mapnik.Map(256,256)
    in_map = "../data/good_maps/raster_symbolizer.xml"
    mapnik.load_map(map, in_map)

    out_map = mapnik.save_map_to_string(map)
    assert 'RasterSymbolizer' in out_map
    assert 'RasterColorizer' in out_map
    assert 'stop' in out_map

 def render_on_demand_as_loop(self, tile_uri, zoom, zentral_tile):
     rendered_tiles = []
     tileBunch = new_object.getTileBunch(zentral_tile)
     for tile in tileBunch:
         if not os.path.isdir(tile_uri + '/' + str(tile[0])):
             os.mkdir(tile_uri + '/' + str(tile[0]))
         uri = tile_uri + '/' + str(tile[0]) + '/' + str(tile[1]) + '.png'
         arg = (tile_dir, mapnik.save_map_to_string(self.mapnik_map), maxZoom, uri,tile[0], tile[1], zoom)
         scale = rendering.pure_tile_rendering(arg)
         rendered_tiles.append(uri)
     return rendered_tiles, scale

    def on_btn_ok_clicked(self, widget, data=None):
        """The user has elected to save the changes.

        Called before the dialog returns Gtk.ResponseType.OK from run().
        """
        logs = os.getenv("HOME") + '/TileGen/log-files/'
        wobj = open(logs+'TileGen-last-mapfile.xml', 'w')
        wobj.write(mapnik.save_map_to_string(self.mapnik_map))
        wobj.close
        
        func.writeToLog('Deleted tile_dir! %s' %os.system(' rm -rf '+ tile_dir),logs)
        pass

def test_load_save_map():
    map = mapnik.Map(256, 256)
    in_map = "../visual_tests/styles/raster_symbolizer.xml"
    try:
        mapnik.load_map(map, in_map)

        out_map = mapnik.save_map_to_string(map)
        assert "RasterSymbolizer" in out_map
        assert "RasterColorizer" in out_map
        assert "stop" in out_map
    except RuntimeError, e:
        # only test datasources that we have installed
        if not "Could not create datasource" in str(e):
            raise RuntimeError(str(e))

def test_load_save_map():
    map = mapnik.Map(256, 256)
    in_map = "../data/good_maps/raster_symbolizer.xml"
    try:
        mapnik.load_map(map, in_map)

        out_map = mapnik.save_map_to_string(map)
        assert 'RasterSymbolizer' in out_map
        assert 'RasterColorizer' in out_map
        assert 'stop' in out_map
    except RuntimeError as e:
        # only test datasources that we have installed
        if not 'Could not create datasource' in str(e):
            raise RuntimeError(str(e))

def test_load_save_load_map():
    map = mapnik.Map(256,256)
    in_map = "../data/good_maps/glyph_symbolizer.xml"
    mapnik.load_map(map, in_map)
    style = map.find_style('arrows')
    sym = style.rules[0].symbols[0]
    assert isinstance(sym, mapnik.GlyphSymbolizer)
    assert sym.angle_mode == mapnik.angle_mode.AZIMUTH

    out_map = mapnik.save_map_to_string(map).decode('utf8')
    map = mapnik.Map(256,256)
    mapnik.load_map_from_string(map, out_map.encode('utf8'))
    assert 'GlyphSymbolizer' in out_map
    # make sure non-ascii characters are well supported since most interesting
    # glyphs for symbology are usually in that range
    assert u'í' in out_map, out_map

def compare_map(xml):
    m = mapnik.Map(256, 256)
    absolute_base = os.path.abspath(os.path.dirname(xml))
    mapnik.load_map(m, xml, False, absolute_base)
    (handle, test_map) = tempfile.mkstemp(suffix='.xml', prefix='mapnik-temp-map1-')
    os.close(handle)
    (handle, test_map2) = tempfile.mkstemp(suffix='.xml', prefix='mapnik-temp-map2-')
    os.close(handle)
    if os.path.exists(test_map):
        os.remove(test_map)
    mapnik.save_map(m, test_map)
    new_map = mapnik.Map(256, 256)
    mapnik.load_map(new_map, test_map,False,absolute_base)
    open(test_map2,'w').write(mapnik.save_map_to_string(new_map))
    diff = ' diff %s %s' % (os.path.abspath(test_map),os.path.abspath(test_map2))
    try:
        eq_(open(test_map).read(),open(test_map2).read())
    except AssertionError, e:
        raise AssertionError('serialized map "%s" not the same after being reloaded, \ncompare with command:\n\n$%s' % (xml,diff))

 def render_on_demand_as_loop(self, tile_uri, zoom, central_tile):
     rendered_tiles = []
     tileBunch = self.TileCalcs.getTileBunch(central_tile)
     for tile in tileBunch:
         if not os.path.isdir(tile_uri + "/" + str(tile[0])):
             os.mkdir(tile_uri + "/" + str(tile[0]))
         uri = tile_uri + "/" + str(tile[0]) + "/" + str(tile[1]) + ".png"
         arg = (
             self.params.getTilesHome(),
             mapnik.save_map_to_string(self.tileParams.getMapnikMap()),
             self.tileParams.getMaxZoom(),
             uri,
             tile[0],
             tile[1],
             zoom,
         )
         scale = rendering.pure_tile_rendering(arg)
         rendered_tiles.append(uri)
     return rendered_tiles, scale

 def on_comboboxtext_layer_changed(self, widget, data=None):
     self.ui.comboboxtext_style.remove_all()
     chosen_layer = self.ui.comboboxtext_layer.get_active_text()  
     self.mapnik_styles = [] 
     #find the chosen layer
     for layer in self.mapnik_map.layers.__iter__():
        if chosen_layer == layer.name:
            source_params = xmlFunc.getDatasourceFromString(mapnik.save_map_to_string(self.mapnik_map),chosen_layer)
            type = source_params['type']
            #print type
            if type == 'shape' or type == 'postgis':
                self.datasource = (source_params['type'], layer.datasource, source_params)
                self.layerSRS = layer.srs
                for style in layer.styles:
                    self.mapnik_styles.append(style)
                    self.ui.comboboxtext_style.append_text(style)
            else:
                 print 'Please implement the missing type: %s' %type
                 self.ui.comboboxtext_style.append_text('Layer type: %s ... it is not implemented yet!' %type)

def test_loading_fontset_from_python():
    m = mapnik.Map(256,256)
    fset = mapnik.FontSet('foo')
    fset.add_face_name('Comic Sans')
    fset.add_face_name('Papyrus')
    eq_(fset.name,'foo')
    fset.name = 'my-set'
    eq_(fset.name,'my-set')
    m.append_fontset('my-set', fset)
    sty = mapnik.Style()
    rule = mapnik.Rule()
    tsym = mapnik.TextSymbolizer()
    eq_(tsym.fontset,None)
    tsym.fontset = fset
    rule.symbols.append(tsym)
    sty.rules.append(rule)
    m.append_style('Style',sty)
    serialized_map = mapnik.save_map_to_string(m)
    eq_('fontset-name="my-set"' in serialized_map,True)

def test_load_save_load_map():
    map = mapnik.Map(256, 256)
    in_map = "../data/good_maps/glyph_symbolizer.xml"
    try:
        mapnik.load_map(map, in_map)
        style = map.find_style("arrows")
        sym = style.rules[0].symbols[0]
        assert isinstance(sym, mapnik.GlyphSymbolizer)
        assert sym.angle_mode == mapnik.angle_mode.AZIMUTH

        out_map = mapnik.save_map_to_string(map).decode("utf8")
        map = mapnik.Map(256, 256)
        mapnik.load_map_from_string(map, out_map.encode("utf8"))
        assert "GlyphSymbolizer" in out_map
        # make sure non-ascii characters are well supported since most interesting
        # glyphs for symbology are usually in that range
        assert u"í" in out_map, out_map
    except RuntimeError, e:
        # only test datasources that we have installed
        if not "Could not create datasource" in str(e):
            raise RuntimeError(e)