def test_get_color():
colorizer = mapnik2.RasterColorizer()
# Setup the color bands. band[N].color will apply to all
# values 'v' if band[N].value <= v < band[N+1].color
# If no color is found then "transparent" will be assigned
bands = [(value, mapnik2.Color(color)) for value, color in [
( 0, "#0044cc"),
( 10, "#00cc00"),
( 20, "#ffff00"),
( 30, "#ff7f00"),
( 40, "#ff0000"),
( 50, "#ff007f"),
( 60, "#ff00ff"),
( 70, "#cc00cc"),
( 80, "#990099"),
( 90, "#660066"),
( 200, "#ffffff"),
]]
for value, color in bands:
colorizer.append_band(value, color)
eq_(colorizer.get_color(-1), mapnik2.Color("transparent"))
eq_(colorizer.get_color(0), bands[0][1])
eq_(colorizer.get_color(5), bands[0][1])
eq_(colorizer.get_color(10), bands[1][1])
# last value is used if it matches exactly
eq_(colorizer.get_color(200), bands[-1][1])
# values greater than the last value are mapped to "transparent"
eq_(colorizer.get_color(201), mapnik2.Color("transparent"))
def test_linesymbolizer_init():
l = mapnik2.LineSymbolizer()
eq_(l.stroke.width, 1)
eq_(l.stroke.opacity, 1)
eq_(l.stroke.color, mapnik2.Color('black'))
eq_(l.stroke.line_cap, mapnik2.line_cap.BUTT_CAP)
eq_(l.stroke.line_join, mapnik2.line_join.MITER_JOIN)
l = mapnik2.LineSymbolizer(mapnik2.Color('blue'), 5.0)
eq_(l.stroke.width, 5)
eq_(l.stroke.opacity, 1)
eq_(l.stroke.color, mapnik2.Color('blue'))
eq_(l.stroke.line_cap, mapnik2.line_cap.BUTT_CAP)
eq_(l.stroke.line_join, mapnik2.line_join.MITER_JOIN)
s = mapnik2.Stroke(mapnik2.Color('blue'), 5.0)
l = mapnik2.LineSymbolizer(s)
eq_(l.stroke.width, 5)
eq_(l.stroke.opacity, 1)
eq_(l.stroke.color, mapnik2.Color('blue'))
eq_(l.stroke.line_cap, mapnik2.line_cap.BUTT_CAP)
eq_(l.stroke.line_join, mapnik2.line_join.MITER_JOIN)
def ogc_TextSymbolizer_to_mapnik(text):
name = text.Label.find("{%s}PropertyName" % rule.nsmap['ogc'])
if not name and hasattr(text, 'Label'):
name = shlex.split(str(text.Label))[0]
#face_name = '[%s]' % text.Font
face_name = 'DejaVu Sans Book'
size = 10
for css in text.Font.CssParameter:
if css.get('name') == 'font-family':
face_name = css.text
elif css.get('name') == 'font-size':
size = int(float(css.text))
color = mapnik.Color('black')
for css in text.Fill.CssParameter:
if css.get('name') == 'fill':
color = mapnik.Color(css.text)
m_text = mapnik.TextSymbolizer(mapnik.Expression('[%s]' % name),
str(face_name), int(size), color)
if hasattr(text, 'LabelPlacement'):
if hasattr(text.LabelPlacement, 'LinePlacement'):
m_text.label_placement = mapnik.label_placement.LINE_PLACEMENT
if hasattr(text, 'Halo'):
h = text.Halo
if hasattr(h, 'Radius'):
m_text.halo_radius = float(h.Radius)
if hasattr(h, 'Fill'):
for css in h.Fill.CssParameter:
if css.get('name') == 'fill':
m_text.halo_fill = mapnik.Color(css.text)
yield m_text
def test_textsymbolizer_init():
ts = mapnik2.TextSymbolizer(mapnik2.Expression('[Field_Name]'), 'Font Name', 8, mapnik2.Color('black'))
eq_(str(ts.name), str(mapnik2.Expression('[Field_Name]')))
eq_(ts.face_name, 'Font Name')
eq_(ts.text_size, 8)
eq_(ts.fill, mapnik2.Color('black'))
eq_(ts.label_placement, mapnik2.label_placement.POINT_PLACEMENT)
def test_shieldsymbolizer_init():
s = mapnik2.ShieldSymbolizer(
mapnik2.Expression('[Field Name]'), 'DejaVu Sans Bold', 6,
mapnik2.Color('#000000'),
mapnik2.PathExpression('../data/images/dummy.png'))
eq_(s.anchor, (
0.0,
0.5,
))
eq_(s.displacement, (0.0, 0.0))
eq_(s.allow_overlap, False)
eq_(s.avoid_edges, False)
eq_(s.character_spacing, 0)
eq_(str(s.name), str(mapnik2.Expression('[Field Name]')))
eq_(s.face_name, 'DejaVu Sans Bold')
eq_(s.allow_overlap, False)
eq_(s.fill, mapnik2.Color('#000000'))
eq_(s.force_odd_labels, False)
eq_(s.halo_fill, mapnik2.Color('rgb(255,255,255)'))
eq_(s.halo_radius, 0)
eq_(s.label_placement, mapnik2.label_placement.POINT_PLACEMENT)
eq_(s.minimum_distance, 0.0)
eq_(s.text_ratio, 0)
eq_(s.text_size, 6)
eq_(s.wrap_width, 0)
eq_(s.vertical_alignment, mapnik2.vertical_alignment.MIDDLE)
eq_(s.label_spacing, 0)
eq_(s.label_position_tolerance, 0)
# 22.5 * M_PI/180.0 initialized by default
assert_almost_equal(s.max_char_angle_delta, 0.39269908169872414)
eq_(s.wrap_character, ' ')
eq_(s.text_transform, mapnik2.text_transform.NONE)
eq_(s.line_spacing, 0)
eq_(s.character_spacing, 0)
# r1341
eq_(s.wrap_before, False)
eq_(s.horizontal_alignment, mapnik2.horizontal_alignment.MIDDLE)
eq_(s.justify_alignment, mapnik2.justify_alignment.MIDDLE)
eq_(s.opacity, 1.0)
# r2300
eq_(s.minimum_padding, 0.0)
# was mixed with s.opacity
eq_(s.text_opacity, 1.0)
eq_(s.shield_displacement, (0.0, 0.0))
# TODO - the pattern in bindings seems to be to get/set
# strings for PathExpressions... should we pass objects?
eq_(s.filename, '../data/images/dummy.png')
eq_(s.transform, 'matrix(1, 0, 0, 1, 0, 0)')
raise Todo(
"FontSet pickling support needed: http://trac.mapnik2.org/ticket/348")
eq_(s.fontset, '')
def test_polygonsymbolizer_init():
p = mapnik2.PolygonSymbolizer()
eq_(p.fill, mapnik2.Color('gray'))
eq_(p.fill_opacity, 1)
p = mapnik2.PolygonSymbolizer(mapnik2.Color('blue'))
eq_(p.fill, mapnik2.Color('blue'))
eq_(p.fill_opacity, 1)
def test_setting_alpha():
w, h = 256, 256
im1 = mapnik2.Image(w, h)
# white, half transparent
im1.background = mapnik2.Color('rgba(255,255,255,.5)')
# pure white
im2 = mapnik2.Image(w, h)
im2.background = mapnik2.Color('rgba(255,255,255,1)')
im2.set_alpha(.5)
eq_(len(im1.tostring()), len(im2.tostring()))
def test_color_pickle():
c = mapnik2.Color('blue')
eq_(pickle.loads(pickle.dumps(c)), c)
c = mapnik2.Color(0, 64, 128)
eq_(pickle.loads(pickle.dumps(c)), c)
c = mapnik2.Color(0, 64, 128, 192)
eq_(pickle.loads(pickle.dumps(c)), c)
def test_get_color_with_max_value():
colorizer = mapnik2.RasterColorizer()
c1 = mapnik2.Color("#0044cc")
colorizer.append_band(0, c1)
c2 = mapnik2.Color("#0055dd")
colorizer.append_band(1, 2, c2)
eq_(colorizer.get_color(-1), mapnik2.Color("transparent"))
eq_(colorizer.get_color(0), c1)
eq_(colorizer.get_color(0.5), c1)
eq_(colorizer.get_color(1), c2)
eq_(colorizer.get_color(1.5), c2)
eq_(colorizer.get_color(2), mapnik2.Color("transparent"))
def test_polygonsymbolizer_init():
p = mapnik2.PolygonSymbolizer()
eq_(p.fill, mapnik2.Color('gray'))
eq_(p.fill_opacity, 1)
eq_(p.placement, mapnik2.point_placement.CENTROID)
p = mapnik2.PolygonSymbolizer(mapnik2.Color('blue'))
p.placement = mapnik2.point_placement.INTERIOR
eq_(p.fill, mapnik2.Color('blue'))
eq_(p.fill_opacity, 1)
eq_(p.placement, mapnik2.point_placement.INTERIOR)
def test_textsymbolizer_pickle():
ts = mapnik2.TextSymbolizer(mapnik2.Expression('[Field_Name]'),
'Font Name', 8, mapnik2.Color('black'))
eq_(str(ts.name), str(mapnik2.Expression('[Field_Name]')))
eq_(ts.face_name, 'Font Name')
eq_(ts.text_size, 8)
eq_(ts.fill, mapnik2.Color('black'))
raise Todo("text_symbolizer pickling currently disabled")
ts2 = pickle.loads(pickle.dumps(ts, pickle.HIGHEST_PROTOCOL))
eq_(ts.name, ts2.name)
eq_(ts.face_name, ts2.face_name)
eq_(ts.allow_overlap, ts2.allow_overlap)
eq_(ts.displacement, ts2.displacement)
eq_(ts.anchor, ts2.anchor)
eq_(ts.fill, ts2.fill)
eq_(ts.force_odd_labels, ts2.force_odd_labels)
eq_(ts.halo_fill, ts2.halo_fill)
eq_(ts.halo_radius, ts2.halo_radius)
eq_(ts.label_placement, ts2.label_placement)
eq_(ts.minimum_distance, ts2.minimum_distance)
eq_(ts.text_ratio, ts2.text_ratio)
eq_(ts.text_size, ts2.text_size)
eq_(ts.wrap_width, ts2.wrap_width)
eq_(ts.vertical_alignment, ts2.vertical_alignment)
eq_(ts.label_spacing, ts2.label_spacing)
eq_(ts.label_position_tolerance, ts2.label_position_tolerance)
# 22.5 * M_PI/180.0 initialized by default
assert_almost_equal(s.max_char_angle_delta, 0.39269908169872414)
eq_(ts.wrap_character, ts2.wrap_character)
eq_(ts.text_transform, ts2.text_transform)
eq_(ts.line_spacing, ts2.line_spacing)
eq_(ts.character_spacing, ts2.character_spacing)
# r1341
eq_(ts.wrap_before, ts2.wrap_before)
eq_(ts.horizontal_alignment, ts2.horizontal_alignment)
eq_(ts.justify_alignment, ts2.justify_alignment)
eq_(ts.opacity, ts2.opacity)
# r2300
eq_(s.minimum_padding, 0.0)
raise Todo(
"FontSet pickling support needed: http://trac.mapnik2.org/ticket/348")
eq_(ts.fontset, ts2.fontset)
def stroke_to_mapnik(stroke):
m_stroke = mapnik.Stroke()
for css in stroke.CssParameter:
if css.get('name') == 'stroke':
m_stroke.color = mapnik.Color(css.text)
elif css.get('name') == 'stroke-width':
m_stroke.width = float(css.text)
elif css.get('name') == 'stroke-opacity':
m_stroke.opacity = float(css.text)
elif css.get('name') == 'stroke-dasharray':
dashes = map(float, css.text.strip().split(' '))
assert len(dashes) % 2 == 0, dashes
for i in xrange(0, len(dashes), 2):
m_stroke.add_dash(dashes[i], dashes[i + 1])
elif css.get('name') == 'stroke-linecap':
m_stroke.line_cap = get_cap(css.text)
elif css.get('name') == 'stroke-join':
m_stroke.line_join = get_join(css.text)
elif css.get('name') == 'stroke-linejoin':
m_stroke.line_join = get_join(css.text)
elif css.get('name') == 'stroke-dashoffset':
m_stroke.dash_offset = float(css.text)
else:
raise Exception('unhanded: ' + css.get('name'))
return m_stroke
def create_grid_map(width,height):
places_ds = mapnik2.PointDatasource()
places_ds.add_point(143.10,-38.60,'Name','South East')
places_ds.add_point(142.48,-38.60,'Name','South West')
places_ds.add_point(142.48,-38.38,'Name','North West')
places_ds.add_point(143.10,-38.38,'Name','North East')
s = mapnik2.Style()
r = mapnik2.Rule()
#symb = mapnik2.PointSymbolizer()
symb = mapnik2.MarkersSymbolizer()
symb.allow_overlap = True
r.symbols.append(symb)
label = mapnik2.TextSymbolizer(mapnik2.Expression('[Name]'),
'DejaVu Sans Book',
10,
mapnik2.Color('black')
)
label.allow_overlap = True
label.displacement = (0,-10)
#r.symbols.append(label)
s.rules.append(r)
lyr = mapnik2.Layer('Places')
lyr.datasource = places_ds
lyr.styles.append('places_labels')
m = mapnik2.Map(width,height)
m.append_style('places_labels',s)
m.layers.append(lyr)
return m
def add_gpx_style(self, gpx_style):
"""Adds mapnik style for styling GPX track
This is blue 40% transparent 4 width line.
Parameters
---------
gpx_style : str
Name of the style layer
Note
----
This doesn't work for some reason. Style is added and if mapnik XML is
saved and read it is used.
"""
self._lazy_init_map()
style = mapnik.Style()
style.filter_mode = mapnik.filter_mode.FIRST
rule = mapnik.Rule()
line_symbolizer = mapnik.LineSymbolizer()
line_symbolizer.stroke = mapnik.Color('rgb(0%,0%,100%)')
line_symbolizer.stroke_width = 4
line_symbolizer.stroke_opacity = 0.4
#line_symbolizer.simplify = 0.1
rule.symbols.append(line_symbolizer)
style.rules.append(rule)
self.m.append_style(gpx_style, style)
print("Making style")
def rpc_renderCoordOld(self, lat, lon, zoom):
"""
Renders a map for the given coordinates.
"""
Map = None
LandmassShapefile = 'cape/Interface/ne_110m_admin_0_countries.shp'
im = mapnik.Image(self.mapsize[0], self.mapsize[1])
m = mapnik.Map(self.mapsize[0], self.mapsize[1])
m.background = mapnik.Color(self.backgroundColor)
s = mapnik.Style()
r = mapnik.Rule()
polygon_symbolizer = mapnik.PolygonSymbolizer(
mapnik.Color(self.foregroundColor))
r.symbols.append(polygon_symbolizer)
line_symbolizer = mapnik.LineSymbolizer(
mapnik.Color('rgb(50%,50%,50%)'), 0.1)
r.symbols.append(line_symbolizer)
s.rules.append(r)
m.append_style('My Style', s)
ds = mapnik.Shapefile(file=LandmassShapefile)
layer = mapnik.Layer('world')
layer.datasource = ds
layer.styles.append('My Style')
m.layers.append(layer)
center = mapnik.Coord(lat, lon)
transform = mapnik.ProjTransform(self.longlat, self.merc)
merc_center = transform.forward(center)
dx = (20037508.34 * 2 * (self.mapsize[0] / 2)) / (256 * (2**(zoom)))
minx = merc_center.x - dx
maxx = merc_center.x + dx
m.aspect_fix_mode = mapnik.aspect_fix_mode.ADJUST_BBOX_HEIGHT
merc_bbox = mapnik.Box2d(minx, merc_center.y - 1, maxx,
merc_center.y + 1)
m.zoom_to_box(merc_bbox)
mapnik.render(m, im)
Map = im.tostring('png')
return (True, Map)
def test_polygonsymbolizer_pickle():
p = mapnik2.PolygonSymbolizer(mapnik2.Color('black'))
p.fill_opacity = .5
# does not work for some reason...
#eq_(pickle.loads(pickle.dumps(p)), p)
p2 = pickle.loads(pickle.dumps(p,pickle.HIGHEST_PROTOCOL))
eq_(p.fill, p2.fill)
eq_(p.fill_opacity, p2.fill_opacity)
def test_stroke_pickle():
s = mapnik2.Stroke(mapnik2.Color('black'),4.5)
eq_(s.width, 4.5)
eq_(s.color, mapnik2.Color('black'))
s.add_dash(1,2)
s.add_dash(3,4)
s.add_dash(5,6)
s2 = pickle.loads(pickle.dumps(s,pickle.HIGHEST_PROTOCOL))
eq_(s.color, s2.color)
eq_(s.width, s2.width)
eq_(s.opacity, s2.opacity)
eq_(s.get_dashes(), s2.get_dashes())
eq_(s.line_cap, s2.line_cap)
eq_(s.line_join, s2.line_join)
def test_color_init():
c = mapnik2.Color('blue')
eq_(c.a, 255)
eq_(c.r, 0)
eq_(c.g, 0)
eq_(c.b, 255)
eq_(c.to_hex_string(), '#0000ff')
c = mapnik2.Color('#f2eff9')
eq_(c.a, 255)
eq_(c.r, 242)
eq_(c.g, 239)
eq_(c.b, 249)
eq_(c.to_hex_string(), '#f2eff9')
c = mapnik2.Color('rgb(50%,50%,50%)')
eq_(c.a, 255)
eq_(c.r, 128)
eq_(c.g, 128)
eq_(c.b, 128)
eq_(c.to_hex_string(), '#808080')
c = mapnik2.Color(0, 64, 128)
eq_(c.a, 255)
eq_(c.r, 0)
eq_(c.g, 64)
eq_(c.b, 128)
eq_(c.to_hex_string(), '#004080')
c = mapnik2.Color(0, 64, 128, 192)
eq_(c.a, 192)
eq_(c.r, 0)
eq_(c.g, 64)
eq_(c.b, 128)
eq_(c.to_hex_string(), '#004080')
def test_dataraster_coloring():
srs = '+init=epsg:32630'
lyr = mapnik2.Layer('dataraster')
lyr.datasource = mapnik2.Gdal(
file='../data/raster/dataraster.tif',
band=1,
)
lyr.srs = srs
_map = mapnik2.Map(256, 256, srs)
style = mapnik2.Style()
rule = mapnik2.Rule()
sym = mapnik2.RasterSymbolizer()
# Assigning a colorizer to the RasterSymbolizer tells the later
# that it should use it to colorize the raw data raster
sym.colorizer = mapnik2.RasterColorizer(mapnik2.COLORIZER_DISCRETE,
mapnik2.Color("transparent"))
for value, color in [
(0, "#0044cc"),
(10, "#00cc00"),
(20, "#ffff00"),
(30, "#ff7f00"),
(40, "#ff0000"),
(50, "#ff007f"),
(60, "#ff00ff"),
(70, "#cc00cc"),
(80, "#990099"),
(90, "#660066"),
(200, "transparent"),
]:
sym.colorizer.add_stop(value, mapnik2.Color(color))
rule.symbols.append(sym)
style.rules.append(rule)
_map.append_style('foo', style)
lyr.styles.append('foo')
_map.layers.append(lyr)
_map.zoom_to_box(lyr.envelope())
im = mapnik2.Image(_map.width, _map.height)
mapnik2.render(_map, im)
# save a png somewhere so we can see it
save_data('test_dataraster_coloring.png', im.tostring('png'))
imdata = im.tostring()
# we have some values in the [20,30) interval so check that they're colored
assert contains_word('\xff\xff\x00\xff', imdata)
def test_render_grid():
places_ds = mapnik2.PointDatasource()
places_ds.add_point(143.10, -38.60, 'Name', 'South East')
places_ds.add_point(142.48, -38.60, 'Name', 'South West')
places_ds.add_point(142.48, -38.38, 'Name', 'North West')
places_ds.add_point(143.10, -38.38, 'Name', 'North East')
s = mapnik2.Style()
r = mapnik2.Rule()
#symb = mapnik2.PointSymbolizer()
symb = mapnik2.MarkersSymbolizer()
symb.allow_overlap = True
r.symbols.append(symb)
label = mapnik2.TextSymbolizer(mapnik2.Expression('[Name]'),
'DejaVu Sans Book', 10,
mapnik2.Color('black'))
label.allow_overlap = True
label.displacement = (0, -10)
#r.symbols.append(label)
s.rules.append(r)
lyr = mapnik2.Layer('Places')
lyr.datasource = places_ds
lyr.styles.append('places_labels')
m = mapnik2.Map(256, 256)
m.append_style('places_labels', s)
m.layers.append(lyr)
ul_lonlat = mapnik2.Coord(142.30, -38.20)
lr_lonlat = mapnik2.Coord(143.40, -38.80)
m.zoom_to_box(mapnik2.Box2d(ul_lonlat, lr_lonlat))
grid = mapnik2.render_grid(m, 0, key='Name', resolution=4, fields=['Name'])
eq_(grid, grid_correct)
eq_(resolve(grid, 0, 0), None)
# check every pixel of the nw symbol
expected = {"Name": "North West"}
# top row
eq_(resolve(grid, 23, 9), expected)
eq_(resolve(grid, 23, 10), expected)
eq_(resolve(grid, 23, 11), expected)
# core
eq_(resolve(grid, 24, 8), expected)
eq_(resolve(grid, 24, 9), expected)
eq_(resolve(grid, 24, 10), expected)
eq_(resolve(grid, 24, 11), expected)
eq_(resolve(grid, 24, 12), expected)
eq_(resolve(grid, 25, 8), expected)
eq_(resolve(grid, 25, 9), expected)
eq_(resolve(grid, 25, 10), expected)
eq_(resolve(grid, 25, 11), expected)
eq_(resolve(grid, 25, 12), expected)
# bottom row
eq_(resolve(grid, 26, 9), expected)
eq_(resolve(grid, 26, 10), expected)
eq_(resolve(grid, 26, 11), expected)
def test_stroke_init():
s = mapnik2.Stroke()
eq_(s.width, 1)
eq_(s.opacity, 1)
eq_(s.color, mapnik2.Color('black'))
eq_(s.line_cap, mapnik2.line_cap.BUTT_CAP)
eq_(s.line_join, mapnik2.line_join.MITER_JOIN)
eq_(s.gamma,1.0)
s = mapnik2.Stroke(mapnik2.Color('blue'), 5.0)
s.gamma = .5
eq_(s.width, 5)
eq_(s.opacity, 1)
eq_(s.color, mapnik2.Color('blue'))
eq_(s.gamma, .5)
eq_(s.line_cap, mapnik2.line_cap.BUTT_CAP)
eq_(s.line_join, mapnik2.line_join.MITER_JOIN)
def to_mapnik(self):
stroke = mapnik.Stroke(mapnik.Color(str(self.color)), self.width)
stroke.opacity = self.opacity or stroke.opacity
stroke.line_cap = self.cap or stroke.line_cap
stroke.line_join = self.join or stroke.line_join
if self.dashes:
stroke.add_dash(*self.dashes.values)
sym = mapnik.LineSymbolizer(stroke)
return sym
def test_render_image_to_string():
i = mapnik2.Image(256, 256)
i.background = mapnik2.Color('black')
s = i.tostring()
eq_(s, 256 * 256 * '\x00\x00\x00\xff')
s = i.tostring('png')
def to_mapnik(self):
sym = mapnik.ShieldSymbolizer(
mapnik.Expression(self.name), self.face_name, self.size,
mapnik.Color(str(self.color)) if self.color else None, self.file,
self.type, self.width, self.height)
sym.character_spacing = self.character_spacing or sym.character_spacing
sym.line_spacing = self.line_spacing or sym.line_spacing
sym.spacing = self.spacing or sym.line_spacing
sym.minimum_distance = self.min_distance or sym.minimum_distance
return sym
def ogc_RasterSymbolizer_to_mapnik(sym):
if hasattr(sym, 'ColorMap'):
m_sym = mapnik.RasterSymbolizer()
type = sym.ColorMap.attrib.get('type', 'ramp')
type_map = {
'ramp': mapnik.COLORIZER_LINEAR,
'intervals': mapnik.COLORIZER_DISCRETE,
'values': mapnik.COLORIZER_EXACT,
}
mode = type_map[type]
colorizer = mapnik.RasterColorizer(mode, mapnik.Color('transparent'))
for c in sym.ColorMap.ColorMapEntry:
color = mapnik.Color(c.attrib['color'])
color.a = int(float(c.attrib.get('opacity', 1)) * 255)
value = float(c.attrib['quantity'])
label = c.attrib.get('label', '')
stop = mapnik.ColorizerStop(value, mapnik.COLORIZER_INHERIT, color)
stop.label = label
colorizer.add_stop(stop)
m_sym.colorizer = colorizer
yield m_sym
def to_mapnik(self):
sym = mapnik.TextSymbolizer(mapnik.Expression(self.name),
self.face_name, self.size,
mapnik.Color(str(self.color)))
sym.wrap_width = self.wrap_width or sym.wrap_width
sym.label_spacing = self.spacing or sym.label_spacing
sym.label_position_tolerance = self.label_position_tolerance or sym.label_position_tolerance
sym.max_char_angle_delta = self.max_char_angle_delta or sym.max_char_angle_delta
sym.halo_fill = mapnik.Color(str(
self.halo_color)) if self.halo_color else sym.halo_fill
sym.halo_radius = self.halo_radius or sym.halo_radius
sym.character_spacing = self.character_spacing or sym.character_spacing
sym.line_spacing = self.line_spacing or sym.line_spacing
sym.avoid_edges = self.avoid_edges.value if self.avoid_edges else sym.avoid_edges
sym.minimum_distance = self.min_distance or sym.minimum_distance
sym.allow_overlap = self.allow_overlap.value if self.allow_overlap else sym.allow_overlap
sym.text_transform = self.text_transform if self.text_transform else sym.text_transform
sym.displacement(self.dx or 0, self.dy or 0)
return sym
def generate_mapnik_style(self, user_id, global_id):
style = mapnik.Style()
for color in self.load_colors(user_id, global_id):
c = mapnik.Color(str(color))
line = mapnik.LineSymbolizer(c, 1.5)
line.stroke.opacity = 0.7
poly = mapnik.PolygonSymbolizer(c)
poly.fill_opacity = 0.5
rule = mapnik.Rule()
rule.filter = mapnik.Filter(str("[color] = '%s'" % (color,)))
rule.symbols.extend([poly,line])
style.rules.append(rule)
return style
def get(self):
mapfile = os.path.join(DATA_PATH, 'hazard', 'flood.shp')
#mapfile = os.path.join(DATA_PATH, 'impact', 'impact.json')
filename = os.path.join(DATA_PATH, 'pdf', 'report_map.pdf')
filename2 = os.path.join(DATA_PATH, 'pdf', 'report_map.png')
map = mapnik2.Map(600, 400)
map.background = mapnik2.Color('steelblue')
s = mapnik2.Style()
r = mapnik2.Rule()
polygon_symbolizer = mapnik2.PolygonSymbolizer(
mapnik2.Color('#f2eff9'))
r.symbols.append(polygon_symbolizer)
line_symbolizer = mapnik2.LineSymbolizer(
mapnik2.Color('rgb(50%,50%,50%)'), 0.1)
r.symbols.append(line_symbolizer)
s.rules.append(r)
map.append_style('My Style', s)
ds = mapnik2.Shapefile(file=mapfile)
layer = mapnik2.Layer('world')
layer.datasource = ds
layer.styles.append('My Style')
map.layers.append(layer)
map.zoom_all()
mapnik2.render_to_file(map, filename2, 'png')
#bbox = mapnik.Envelope(-180.0,-90.0,180.0,90.0)
#map.zoom_to_box(bbox)
surface = cairo.PDFSurface(filename, map.width, map.height)
mapnik2.render(map, surface)
surface.finish()
with open(filename) as data:
pdf = data.read()
data.close()
self.set_header("Content-Type", "application/pdf")
self.write(pdf)
def test_get_color_discrete():
#setup
colorizer = mapnik2.RasterColorizer()
colorizer.default_color = mapnik2.Color(0, 0, 0, 0)
colorizer.default_mode = mapnik2.COLORIZER_DISCRETE
colorizer.add_stop(10, mapnik2.Color(100, 100, 100, 100))
colorizer.add_stop(20, mapnik2.Color(200, 200, 200, 200))
#should be default colour
eq_(colorizer.get_color(-50), mapnik2.Color(0, 0, 0, 0))
eq_(colorizer.get_color(0), mapnik2.Color(0, 0, 0, 0))
#now in stop 1
eq_(colorizer.get_color(10), mapnik2.Color(100, 100, 100, 100))
eq_(colorizer.get_color(19), mapnik2.Color(100, 100, 100, 100))
#now in stop 2
eq_(colorizer.get_color(20), mapnik2.Color(200, 200, 200, 200))
eq_(colorizer.get_color(1000), mapnik2.Color(200, 200, 200, 200))
def generate_mapnik_map(self, user_id, global_id):
m = mapnik.Map(256, 256)
style = self.generate_mapnik_style(user_id, global_id)
m.background = mapnik.Color("transparent")
m.append_style("ZIP_CODES STYLE", style)
m.srs = "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over"
layer = mapnik.Layer('ZIP_CODES')
layer.datasource = self.create_mapnik_datasource(user_id, global_id)
layer.styles.append("ZIP_CODES STYLE")
m.layers.append(layer)
return m
