def renderMap(m, file, bbox):
print('Rendering map with dimensions %s, %s' % (m.width, m.height))
m.zoom_to_box(bbox)
if mapnik.has_pycairo():
print('Rendering PDF')
pdf_surface = cairo.PDFSurface(file, m.width, m.height)
mapnik.render(m, pdf_surface, 1 / 2.0, 0, 0)
pdf_surface.finish()
print('Rendered PDF')
print('Rendering done')
def test_render_points():
# Test for effectivenes of ticket #402 (borderline points get lost on reprojection)
raise Todo("See: http://trac.mapnik.org/ticket/402")
if not mapnik.has_pycairo(): return
# create and populate point datasource (WGS84 lat-lon coordinates)
places_ds = mapnik.PointDatasource()
places_ds.add_point(142.48,-38.38,'Name','Westernmost Point') # westernmost
places_ds.add_point(143.10,-38.60,'Name','Southernmost Point') # southernmost
# create layer/rule/style
s = mapnik.Style()
r = mapnik.Rule()
symb = mapnik.PointSymbolizer()
symb.allow_overlap = True
r.symbols.append(symb)
s.rules.append(r)
lyr = mapnik.Layer('Places','+proj=latlon +datum=WGS84')
lyr.datasource = places_ds
lyr.styles.append('places_labels')
# latlon bounding box corners
ul_lonlat = mapnik.Coord(142.30,-38.20)
lr_lonlat = mapnik.Coord(143.40,-38.80)
# render for different projections
projs = {
'latlon': '+proj=latlon +datum=WGS84',
'merc': '+proj=merc +datum=WGS84 +k=1.0 +units=m +over +no_defs',
'google': '+proj=merc +ellps=sphere +R=6378137 +a=6378137 +units=m',
'utm': '+proj=utm +zone=54 +datum=WGS84'
}
from cairo import SVGSurface
for projdescr in projs.iterkeys():
m = mapnik.Map(1000, 500, projs[projdescr])
m.append_style('places_labels',s)
m.layers.append(lyr)
p = mapnik.Projection(projs[projdescr])
m.zoom_to_box(p.forward(mapnik.Envelope(ul_lonlat,lr_lonlat)))
# Render to SVG so that it can be checked how many points are there with string comparison
import StringIO
svg_memory_file = StringIO.StringIO()
surface = SVGSurface(svg_memory_file, m.width, m.height)
mapnik.render(m, surface)
surface.flush()
surface.finish()
svg = svg_memory_file.getvalue()
svg_memory_file.close()
num_points_present = len(places_ds.all_features())
num_points_rendered = svg.count('<image ')
eq_(num_points_present, num_points_rendered, "Not all points were rendered (%d instead of %d) at projection %s" % (num_points_rendered, num_points_present, projdescr))
def _pycairo_surface(type,sym):
if mapnik.has_pycairo():
import cairo
test_cairo_file = 'test.%s' % type
m = mapnik.Map(256,256)
mapnik.load_map(m,'../data/good_maps/%s_symbolizer.xml' % sym)
surface = getattr(cairo,'%sSurface' % type.upper())(test_cairo_file, m.width,m.height)
mapnik.render(m, surface)
surface.finish()
if os.path.exists(test_cairo_file):
os.remove(test_cairo_file)
return True
else:
# Fail, the file wasn't written
return False
def renderMap(m):
print 'Rendering map with dimensions %s, %s' % (m.width, m.height)
im = mapnik.Image(m.width, m.height)
mapnik.render(m, im)
# Render cairo examples
if mapnik.has_pycairo():
print 'Rendering PDF'
pdf_surface = cairo.PDFSurface(OUTPUT_PATH + 'slovakia.pdf', m.width, m.height)
mapnik.render(m, pdf_surface)
pdf_surface.finish()
print 'Rendered PDF to %s' % (OUTPUT_PATH + 'slovakia.pdf',)
print 'Saving map configuration to %s' % (OUTPUT_PATH + "map_slovakia.xml",)
mapnik.save_map(m, OUTPUT_PATH + "map_slovakia.xml")
def _pycairo_surface(type, sym):
if mapnik.has_pycairo():
import cairo
test_cairo_file = 'test.%s' % type
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/%s_symbolizer.xml' % sym)
surface = getattr(cairo, '%sSurface' % type.upper())(test_cairo_file,
m.width, m.height)
mapnik.render(m, surface)
surface.finish()
if os.path.exists(test_cairo_file):
os.remove(test_cairo_file)
return True
else:
# Fail, the file wasn't written
return False
def test_renders_with_cairo():
if not mapnik.has_pycairo():
return
sym = mapnik.GlyphSymbolizer("DejaVu Sans Condensed",
mapnik.Expression("'í'"))
sym.allow_overlap = True
sym.angle = mapnik.Expression("[azimuth]+90") #+90 so the top of the glyph points upwards
sym.size = mapnik.Expression("[value]")
sym.color = mapnik.Expression("'#ff0000'")
_map = create_map_and_append_symbolyzer(sym)
from cStringIO import StringIO
import cairo
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 256, 256)
mapnik.render(_map, surface)
im = mapnik.Image.from_cairo(surface)
save_data('cairo_glyph_symbolizer.png', im.tostring('png'))
assert contains_word('\xff\x00\x00\xff', im.tostring())
def test_renders_with_cairo():
if not mapnik.has_pycairo():
return
sym = mapnik.GlyphSymbolizer("DejaVu Sans Condensed",
mapnik.Expression("'í'"))
sym.allow_overlap = True
sym.angle = mapnik.Expression(
"[azimuth]+90") #+90 so the top of the glyph points upwards
sym.size = mapnik.Expression("[value]")
sym.color = mapnik.Expression("'#ff0000'")
_map = create_map_and_append_symbolyzer(sym)
if _map:
from cStringIO import StringIO
import cairo
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 256, 256)
mapnik.render(_map, surface)
im = mapnik.Image.from_cairo(surface)
save_data('cairo_glyph_symbolizer.png', im.tostring('png'))
assert contains_word('\xff\x00\x00\xff', im.tostring())
def _render_surface(self, map, map_size):
if self.format.startswith('image/'):
# AGG
f = str(self.format.split('/')[1].lower())
im = mapnik.Image(*map_size)
mapnik.render(map, im)
return im.tostring(f)
elif self.format in ('application/pdf', 'application/postscript',
'text/svg+xml'):
# CAIRO
try:
# first, check if Cairo is available
import cairo
# newer Mapniks have better ways of checking whether they were actually
# compiled with Cairo support
if hasattr(mapnik, 'has_cairo') and (not mapnik.has_cairo()):
raise ImportError
if hasattr(mapnik,
'has_pycairo') and (not mapnik.has_pycairo()):
raise ImportError
except ImportError:
raise ImportError(
"Mapnik wasn't compiled with Cairo support, or Cairo isn't installed."
)
surface_file = StringIO()
if (self.format == 'application/pdf'):
surface = cairo.PDFSurface(surface_file, *map_size)
elif (self.format == 'application/postscript'):
surface = cairo.PSSurface(surface_file, *map_size)
elif (self.format == 'text/svg+xml'):
surface = cairo.SVGSurface(surface_file, *map_size)
mapnik.render(map, surface)
surface.finish()
return surface_file.getvalue()
else:
raise ValueError("Unknown format: %s" % self.format)
def _render_surface(self, map, map_size):
if self.format.startswith('image/'):
# AGG
f = str(self.format.split('/')[1].lower())
im = mapnik.Image(*map_size)
mapnik.render(map, im)
return im.tostring(f)
elif self.format in ('application/pdf', 'application/postscript', 'text/svg+xml'):
# CAIRO
try:
# first, check if Cairo is available
import cairo
# newer Mapniks have better ways of checking whether they were actually
# compiled with Cairo support
if hasattr(mapnik, 'has_cairo') and (not mapnik.has_cairo()):
raise ImportError
if hasattr(mapnik, 'has_pycairo') and (not mapnik.has_pycairo()):
raise ImportError
except ImportError:
raise ImportError("Mapnik wasn't compiled with Cairo support, or Cairo isn't installed.")
surface_file = StringIO()
if (self.format == 'application/pdf'):
surface = cairo.PDFSurface(surface_file, *map_size)
elif (self.format == 'application/postscript'):
surface = cairo.PSSurface(surface_file, *map_size)
elif (self.format == 'text/svg+xml'):
surface = cairo.SVGSurface(surface_file, *map_size)
mapnik.render(map, surface)
surface.finish()
return surface_file.getvalue()
else:
raise ValueError("Unknown format: %s" % self.format)
m.layers.append(lyr)
m.zoom_all()
im = mapnik.Image(m.width, m.height)
detector = mapnik.LabelCollisionDetector(m)
mapnik.render_layer_with_detector(m, im, detector, lyr)
eq_(im.is_solid(), True)
c = im.get_pixel(0, 0, True)
eq_(c.r, 255)
eq_(c.g, 0)
eq_(c.b, 0)
eq_(c.a, 255)
if mapnik.has_pycairo():
import cairo
def test_render_layer_to_cairo_surface():
ds = mapnik.MemoryDatasource()
context = mapnik.Context()
context.push('Name')
f = mapnik.Feature(context, 1)
f['Name'] = 'poly'
f.geometry = mapnik.Geometry.from_wkt(
'POLYGON ((1 1, -1 1, -1 -1, 1 -1, 1 1))')
ds.add_feature(f)
s = mapnik.Style()
r = mapnik.Rule()
symb = mapnik.PolygonSymbolizer()
symb.fill = mapnik.Color('red')
]
ctx.set_line_width(inset/2)
for idx,pt in enumerate(inline):
if (idx == 0):
ctx.move_to(*pt)
else:
ctx.line_to(*pt)
ctx.close_path()
ctx.stroke()
def cairo_color(c):
""" Return a Cairo color tuple from a Mapnik Color."""
ctx_c = (c.r/255.0,c.g/255.0,c.b/255.0,c.a/255.0)
return ctx_c
if mapnik.has_pycairo():
import cairo
def test_passing_pycairo_context_svg():
m = make_tmp_map()
m.zoom_to_box(mapnik.Box2d(-180,-90,180,90))
test_cairo_file = '/tmp/mapnik-cairo-context-test.svg'
surface = cairo.SVGSurface(test_cairo_file, m.width, m.height)
expected_cairo_file = './images/pycairo/cairo-cairo-expected.svg'
context = cairo.Context(surface)
mapnik.render(m,context)
draw_title(m,context,"Hello Map",size=20)
draw_neatline(m,context)
surface.finish()
if not os.path.exists(expected_cairo_file):
print 'generated expected cairo surface file %s' % expected_cairo_file
images_.append('demo64_binary_transparency.png')
im.save('demo128_colors_hextree_no_alpha.png', 'png8:c=100:m=h:t=0')
images_.append('demo128_colors_hextree_no_alpha.png')
im.save('demo_high.jpg', 'jpeg100')
images_.append('demo_high.jpg')
im.save('demo_low.jpg', 'jpeg50')
images_.append('demo_low.jpg')
im.save('demo.tif', 'tiff')
images_.append('demo.tif')
# Render cairo examples
if HAS_PYCAIRO_MODULE and mapnik.has_pycairo():
svg_surface = cairo.SVGSurface('demo.svg', m.width, m.height)
mapnik.render(m, svg_surface)
svg_surface.finish()
images_.append('demo.svg')
pdf_surface = cairo.PDFSurface('demo.pdf', m.width, m.height)
mapnik.render(m, pdf_surface)
images_.append('demo.pdf')
pdf_surface.finish()
postscript_surface = cairo.PSSurface('demo.ps', m.width, m.height)
mapnik.render(m, postscript_surface)
images_.append('demo.ps')
postscript_surface.finish()
#!/usr/bin/env python
import os
import mapnik
from nose.tools import *
from utilities import execution_path, run_all
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
if mapnik.has_pycairo() and 'sqlite' in mapnik.DatasourceCache.plugin_names():
def _pycairo_surface(type,sym):
import cairo
test_cairo_file = '/tmp/test.%s' % type
m = mapnik.Map(256,256)
mapnik.load_map(m,'../data/good_maps/%s_symbolizer.xml' % sym)
if hasattr(cairo,'%sSurface' % type.upper()):
surface = getattr(cairo,'%sSurface' % type.upper())(test_cairo_file, m.width,m.height)
mapnik.render(m, surface)
surface.finish()
if os.path.exists(test_cairo_file):
os.remove(test_cairo_file)
return True
else:
# Fail, the file wasn't written
return False
else:
print 'skipping cairo.%s test since surface is not available' % type.upper()
#images_.append('demo64_binary_transparency.png')
#
#im.save('demo128_colors_hextree_no_alpha.png', 'png8:c=100:m=h:t=0')
#images_.append('demo128_colors_hextree_no_alpha.png')
#
#im.save('demo_high.jpg', 'jpeg100')
#images_.append('demo_high.jpg')
#
#im.save('demo_low.jpg', 'jpeg50')
#images_.append('demo_low.jpg')
#
#im.save('demo.tif', 'tiff')
#images_.append('demo.tif')
#
## Render cairo examples
if HAS_PYCAIRO_MODULE and mapnik.has_pycairo():
svg_surface = cairo.SVGSurface('demo.svg', m.width,m.height)
mapnik.render(m, svg_surface)
svg_surface.finish()
images_.append('demo.svg')
# pdf_surface = cairo.PDFSurface('demo.pdf', m.width,m.height)
# mapnik.render(m, pdf_surface)
# images_.append('demo.pdf')
# pdf_surface.finish()
#
# postscript_surface = cairo.PSSurface('demo.ps', m.width,m.height)
# mapnik.render(m, postscript_surface)
# images_.append('demo.ps')
# postscript_surface.finish()
#!/usr/bin/env python
import os
import mapnik
from nose.tools import *
from utilities import execution_path, run_all
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
if mapnik.has_pycairo() and 'sqlite' in mapnik.DatasourceCache.plugin_names():
def _pycairo_surface(type, sym):
import cairo
test_cairo_file = '/tmp/test.%s' % type
m = mapnik.Map(256, 256)
mapnik.load_map(m, '../data/good_maps/%s_symbolizer.xml' % sym)
if hasattr(cairo, '%sSurface' % type.upper()):
surface = getattr(cairo,
'%sSurface' % type.upper())(test_cairo_file,
m.width, m.height)
mapnik.render(m, surface)
surface.finish()
if os.path.exists(test_cairo_file):
os.remove(test_cairo_file)
return True
else:
