def test_negative_offset(self):
sub_img = create_image((150, 150), color=[100, 120, 130, 140])
img = SubImageSource(sub_img,
size=(100, 100),
offset=(-50, 0),
image_opts=ImageOptions()).as_image()
eq_(img.getcolors(), [(100 * 100, (100, 120, 130, 140))])
def test_larger(self):
sub_img = create_image((150, 150), color=[100, 120, 130, 140])
img = SubImageSource(sub_img,
size=(100, 100),
offset=(0, 0),
image_opts=ImageOptions()).as_image()
assert img.getcolors() == [(100 * 100, (100, 120, 130, 140))]
def test_outside(self):
sub_img = create_image((50, 50), color=[100, 120, 130, 140])
img = SubImageSource(
sub_img,
size=(100, 100),
offset=(200, 0),
image_opts=ImageOptions(transparent=True)).as_image()
eq_(img.getcolors(), [(100 * 100, (255, 255, 255, 0))])
def test_overlap_right(self):
sub_img = create_image((50, 50), color=[100, 120, 130, 140])
img = SubImageSource(
sub_img,
size=(100, 100),
offset=(75, 25),
image_opts=ImageOptions(transparent=True)).as_image()
eq_(sorted(img.getcolors()),
[(25 * 50, (100, 120, 130, 140)),
(100 * 100 - 25 * 50, (255, 255, 255, 0))])
def _get_sub_query(self, query, format):
size, offset, bbox = bbox_position_in_image(query.bbox, query.size, self.extent.bbox_for(query.srs))
if size[0] == 0 or size[1] == 0:
raise BlankImage()
src_query = MapQuery(bbox, size, query.srs, format)
resp = self.client.retrieve(src_query, format)
return SubImageSource(resp, size=query.size, offset=offset, image_opts=self.image_opts)
def get_map(self, query):
self.check_res_range(query)
if query.tiled_only:
self._check_tiled(query)
query_extent = MapExtent(query.bbox, query.srs)
if not query.tiled_only and self.extent and not self.extent.contains(
query_extent):
if not self.extent.intersects(query_extent):
raise BlankImage()
size, offset, bbox = bbox_position_in_image(
query.bbox, query.size, self.extent.bbox_for(query.srs))
if size[0] == 0 or size[1] == 0:
raise BlankImage()
src_query = MapQuery(bbox, size, query.srs, query.format)
resp = self._image(src_query)
result = SubImageSource(resp,
size=query.size,
offset=offset,
image_opts=self.image_opts,
cacheable=resp.cacheable)
else:
result = self._image(query)
return result
def test_outside(self):
sub_img = create_image((50, 50), color=[100, 120, 130, 140])
img = SubImageSource(sub_img, size=(100, 100), offset=(200, 0), image_opts=ImageOptions(transparent=True)).as_image()
eq_(img.getcolors(), [(100*100, (255, 255, 255, 0))])
def test_overlap_right(self):
sub_img = create_image((50, 50), color=[100, 120, 130, 140])
img = SubImageSource(sub_img, size=(100, 100), offset=(75, 25), image_opts=ImageOptions(transparent=True)).as_image()
eq_(sorted(img.getcolors()), [(25*50, (100, 120, 130, 140)), (100*100-25*50, (255, 255, 255, 0))])
def test_negative_offset(self):
sub_img = create_image((150, 150), color=[100, 120, 130, 140])
img = SubImageSource(sub_img, size=(100, 100), offset=(-50, 0), image_opts=ImageOptions()).as_image()
eq_(img.getcolors(), [(100*100, (100, 120, 130, 140))])
def map(self, map_request):
self.check_map_request(map_request)
params = map_request.params
query = MapQuery(params.bbox, params.size, SRS(params.srs),
params.format)
if map_request.params.get('tiled', 'false').lower() == 'true':
query.tiled_only = True
orig_query = query
if self.srs_extents and params.srs in self.srs_extents:
# limit query to srs_extent if query is larger
query_extent = MapExtent(params.bbox, SRS(params.srs))
if not self.srs_extents[params.srs].contains(query_extent):
limited_extent = self.srs_extents[params.srs].intersection(
query_extent)
if not limited_extent:
img_opts = self.image_formats[
params.format_mime_type].copy()
img_opts.bgcolor = params.bgcolor
img_opts.transparent = params.transparent
img = BlankImageSource(size=params.size,
image_opts=img_opts,
cacheable=True)
return Response(img.as_buffer(),
content_type=img_opts.format.mime_type)
sub_size, offset, sub_bbox = bbox_position_in_image(
params.bbox, params.size, limited_extent.bbox)
query = MapQuery(sub_bbox, sub_size, SRS(params.srs),
params.format)
actual_layers = odict()
for layer_name in map_request.params.layers:
layer = self.layers[layer_name]
# only add if layer renders the query
if layer.renders_query(query):
# if layer is not transparent and will be rendered,
# remove already added (then hidden) layers
if not layer.transparent:
actual_layers = odict()
for layer_name, map_layers in layer.map_layers_for_query(
query):
actual_layers[layer_name] = map_layers
authorized_layers, coverage = self.authorized_layers(
'map',
actual_layers.keys(),
map_request.http.environ,
query_extent=(query.srs.srs_code, query.bbox))
self.filter_actual_layers(actual_layers, map_request.params.layers,
authorized_layers)
render_layers = []
for layers in actual_layers.values():
render_layers.extend(layers)
self.update_query_with_fwd_params(query,
params=params,
layers=render_layers)
raise_source_errors = True if self.on_error == 'raise' else False
renderer = LayerRenderer(
render_layers,
query,
map_request,
raise_source_errors=raise_source_errors,
concurrent_rendering=self.concurrent_layer_renderer)
merger = LayerMerger()
renderer.render(merger)
if self.attribution and self.attribution.get(
'text') and not query.tiled_only:
merger.add(attribution_image(self.attribution['text'], query.size))
img_opts = self.image_formats[params.format_mime_type].copy()
img_opts.bgcolor = params.bgcolor
img_opts.transparent = params.transparent
result = merger.merge(size=query.size,
image_opts=img_opts,
bbox=query.bbox,
bbox_srs=params.srs,
coverage=coverage)
if query != orig_query:
result = SubImageSource(result,
size=orig_query.size,
offset=offset,
image_opts=img_opts)
# Provide the wrapping WSGI app or filter the opportunity to process the
# image before it's wrapped up in a response
result = self.decorate_img(result, 'wms.map', actual_layers.keys(),
map_request.http.environ,
(query.srs.srs_code, query.bbox))
try:
result_buf = result.as_buffer(img_opts)
except IOError as ex:
raise RequestError('error while processing image file: %s' % ex,
request=map_request)
resp = Response(result_buf, content_type=img_opts.format.mime_type)
if query.tiled_only and isinstance(result.cacheable, CacheInfo):
cache_info = result.cacheable
resp.cache_headers(cache_info.timestamp,
etag_data=(cache_info.timestamp,
cache_info.size),
max_age=self.max_tile_age)
resp.make_conditional(map_request.http)
if not result.cacheable:
resp.cache_headers(no_cache=True)
return resp
def map(self, map_request):
self.check_map_request(map_request)
params = map_request.params
query = MapQuery(params.bbox, params.size, SRS(params.srs), params.format)
if map_request.params.get('tiled', 'false').lower() == 'true':
query.tiled_only = True
orig_query = query
if self.srs_extents and params.srs in self.srs_extents:
# limit query to srs_extent if query is larger
query_extent = MapExtent(params.bbox, SRS(params.srs))
if not self.srs_extents[params.srs].contains(query_extent):
limited_extent = self.srs_extents[params.srs].intersection(query_extent)
if not limited_extent:
img_opts = self.image_formats[params.format_mime_type].copy()
img_opts.bgcolor = params.bgcolor
img_opts.transparent = params.transparent
img = BlankImageSource(size=params.size, image_opts=img_opts, cacheable=True)
return Response(img.as_buffer(), content_type=img_opts.format.mime_type)
sub_size, offset, sub_bbox = bbox_position_in_image(params.bbox, params.size, limited_extent.bbox)
query = MapQuery(sub_bbox, sub_size, SRS(params.srs), params.format)
actual_layers = odict()
for layer_name in map_request.params.layers:
layer = self.layers[layer_name]
# only add if layer renders the query
if layer.renders_query(query):
# if layer is not transparent and will be rendered,
# remove already added (then hidden) layers
if not layer.transparent:
actual_layers = odict()
for layer_name, map_layers in layer.map_layers_for_query(query):
actual_layers[layer_name] = map_layers
authorized_layers, coverage = self.authorized_layers('map', actual_layers.keys(),
map_request.http.environ, query_extent=(query.srs.srs_code, query.bbox))
self.filter_actual_layers(actual_layers, map_request.params.layers, authorized_layers)
render_layers = []
for layers in actual_layers.values():
render_layers.extend(layers)
self.update_query_with_fwd_params(query, params=params,
layers=render_layers)
raise_source_errors = True if self.on_error == 'raise' else False
renderer = LayerRenderer(render_layers, query, map_request,
raise_source_errors=raise_source_errors,
concurrent_rendering=self.concurrent_layer_renderer)
merger = LayerMerger()
renderer.render(merger)
if self.attribution and not query.tiled_only:
merger.add(attribution_image(self.attribution['text'], query.size))
img_opts = self.image_formats[params.format_mime_type].copy()
img_opts.bgcolor = params.bgcolor
img_opts.transparent = params.transparent
result = merger.merge(size=query.size, image_opts=img_opts,
bbox=query.bbox, bbox_srs=params.srs, coverage=coverage)
if query != orig_query:
result = SubImageSource(result, size=orig_query.size, offset=offset, image_opts=img_opts)
# Provide the wrapping WSGI app or filter the opportunity to process the
# image before it's wrapped up in a response
result = self.decorate_img(result, 'wms.map', actual_layers.keys(),
map_request.http.environ, (query.srs.srs_code, query.bbox))
try:
result_buf = result.as_buffer(img_opts)
except IOError, ex:
raise RequestError('error while processing image file: %s' % ex,
request=map_request)