Exemplo n.º 1
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 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))])
Exemplo n.º 2
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 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))]
Exemplo n.º 3
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 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))])
Exemplo n.º 4
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 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))])
Exemplo n.º 5
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 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)
Exemplo n.º 6
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    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
Exemplo n.º 7
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 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))])
Exemplo n.º 8
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 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))])
Exemplo n.º 9
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))])
Exemplo n.º 10
0
    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
Exemplo n.º 11
0
    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)