95 lines
3.3 KiB
Python
95 lines
3.3 KiB
Python
#encoding: utf8
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#!/usr/bin/env python
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from nose.tools import *
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from utilities import execution_path, save_data, contains_word
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import os, mapnik2
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def test_renders_with_agg():
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sym = mapnik2.GlyphSymbolizer("DejaVu Sans Condensed",
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mapnik2.Expression("'í'"))
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sym.allow_overlap = True
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sym.angle = mapnik2.Expression("[azimuth]+90") #+90 so the top of the glyph points upwards
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sym.size = mapnik2.Expression("[value]")
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sym.color = mapnik2.Expression("'#ff0000'")
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_map = create_map_and_append_symbolyzer(sym)
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im = mapnik2.Image(_map.width,_map.height)
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mapnik2.render(_map, im)
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save_data('agg_glyph_symbolizer.png', im.tostring('png'))
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assert contains_word('\xff\x00\x00\xff', im.tostring())
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def test_renders_with_cairo():
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if not mapnik2.has_pycairo():
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return
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sym = mapnik2.GlyphSymbolizer("DejaVu Sans Condensed",
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mapnik2.Expression("'í'"))
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sym.allow_overlap = True
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sym.angle = mapnik2.Expression("[azimuth]+90") #+90 so the top of the glyph points upwards
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sym.size = mapnik2.Expression("[value]")
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sym.color = mapnik2.Expression("'#ff0000'")
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_map = create_map_and_append_symbolyzer(sym)
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from cStringIO import StringIO
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import cairo
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 256, 256)
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mapnik2.render(_map, surface)
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im = mapnik2.Image.from_cairo(surface)
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save_data('cairo_glyph_symbolizer.png', im.tostring('png'))
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assert contains_word('\xff\x00\x00\xff', im.tostring())
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def test_load_save_load_map():
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map = mapnik2.Map(256,256)
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in_map = "../data/good_maps/glyph_symbolizer.xml"
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mapnik2.load_map(map, in_map)
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style = map.find_style('arrows')
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sym = style.rules[0].symbols[0]
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assert isinstance(sym, mapnik2.GlyphSymbolizer)
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assert sym.angle_mode == mapnik2.angle_mode.AZIMUTH
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out_map = mapnik2.save_map_to_string(map).decode('utf8')
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map = mapnik2.Map(256,256)
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mapnik2.load_map_from_string(map, out_map.encode('utf8'))
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assert 'GlyphSymbolizer' in out_map
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assert 'RasterColorizer' in out_map
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# make sure non-ascii characters are well supported since most interesting
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# glyphs for symbology are usually in that range
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assert u'í' in out_map, out_map
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#
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# Utilities and setup code
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#
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def setup():
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# All of the paths used are relative, if we run the tests
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# from another directory we need to chdir()
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os.chdir(execution_path('.'))
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def create_map_and_append_symbolyzer(sym):
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srs = '+init=epsg:32630'
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lyr = mapnik2.Layer('arrows')
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lyr.datasource = mapnik2.Shapefile(
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file = '../data/shp/arrows.shp',
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)
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lyr.srs = srs
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_map = mapnik2.Map(256,256, srs)
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style = mapnik2.Style()
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rule = mapnik2.Rule()
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rule.symbols.append(sym)
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# put a test symbolizer to see what is the azimuth being read
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ts = mapnik2.TextSymbolizer(mapnik2.Expression('[azimuth]'),
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"DejaVu Sans Book",
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10,
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mapnik2.Color("black"))
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ts.allow_overlap = True
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rule.symbols.append(ts)
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style.rules.append(rule)
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_map.append_style('foo', style)
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lyr.styles.append('foo')
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_map.layers.append(lyr)
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_map.zoom_to_box(mapnik2.Box2d(0,0,8,8))
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return _map
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