first version of legends

functions.py

@@ -610,6 +610,10 @@ def create_folder_if_not_exists(folderpath):
     if not os.path.exists(folderpath):
         os.makedirs(folderpath)
 
+def create_folderlist(folderlist):
+    for folder in folderlist:
+        create_folder_if_not_exists(folder)
+
 def remove_if_exists(pathfile):
     if os.path.exists(pathfile):
         os.remove(pathfile)

modules_info.py

@@ -5,27 +5,29 @@
 inner_div_class_ref = 'media__body'
 outer_div_class_ref = 'media'
 img_css_class_ref = 'media_image responsive'
-assets_base_path = f'{codebase_homepage}assets/homepage/'
+assets_base_path = f'{codebase_homepage}assets/'
+assets_homepage_path = f'{codebase_homepage}assets/homepage/'
+assets_map_symbols_path = f'{codebase_homepage}assets/map_symbols/'
 
 modules_metadata = {
     'webmap': {
         'url' : f'{node_homepage_url}map.html',
-        'img_src' : f"{assets_base_path}oswm_webmap_img.png",
+        'img_src' : f"{assets_homepage_path}oswm_webmap_img.png",
         'text' : 'Webmap'
     },
     'routing': {
-        'url' : STREAMLIT_URL,
-        'img_src' : f"{assets_base_path}oswm_route_img.png",
+        'url' : 'https://kauevestena.github.io/opensidewalkmap_beta/routing.html',
+        'img_src' : f"{assets_homepage_path}oswm_route_img.png",
         'text' : 'Optimized Routing'
     },
     'dashboard': {
         'url' : f'{node_homepage_url}statistics/index.html',
-        'img_src' : f"{assets_base_path}oswm_statistics_img.png",
+        'img_src' : f"{assets_homepage_path}oswm_statistics_img.png",
         'text' : 'Dashboard'
     },
     'data_quality': {
         'url' : f'{node_homepage_url}quality_check/oswm_qc_main.html',
-        'img_src' : f"{assets_base_path}oswm_quality_check_img.png",
+        'img_src' : f"{assets_homepage_path}oswm_quality_check_img.png",
         'text' : 'Data Quality Tool'
     },
 }

webmap/create_webmap_new.py

@@ -59,7 +59,7 @@
     color_dict = get_color_dict(attribute,attribute_layers.get(attribute,'sidewalks'))
     color_schema = create_maplibre_color_schema(color_dict,attribute,different_else_color.get(attribute,'gray'))
 
-    params['styles'][attribute] = create_simple_map_style(interest_attributes[attribute],color_schema,generate_shadow_layers=False)
+    params['styles'][attribute] = create_simple_map_style(interest_attributes[attribute],color_schema,color_dict,attribute)
 
 # reading the base html
 webmap_html = file_as_string(webmap_base_path)

webmap/standalone_legend.py

@@ -63,12 +63,26 @@ def add_element(self, element_type, label, **kwargs):
         """
         if element_type == 'line':
             self.add_line(label=label, **kwargs)
-        elif element_type == 'marker':
+        elif element_type == 'marker' or element_type == 'circle':
             self.add_marker(label=label, **kwargs)
-        elif element_type == 'patch':
+        elif element_type == 'patch' or element_type == 'fill':
             self.add_patch(label=label, **kwargs)
         else:
-            raise ValueError(f"Unknown element type: {element_type}. Supported types are 'line', 'marker', and 'patch'.")
+            raise ValueError(f"Unknown element type: {element_type}. Supported types are 'line', 'marker'/'circle', and 'patch'/'fill'.")
+
+    def add_elements(self, elements):
+        """
+        Add multiple custom elements to the legend.
+
+        Parameters:
+        elements (list): A list of tuples containing the element type and its parameters.
+        """
+        for element_type, kwargs in elements:
+            self.add_element(element_type, **kwargs)
+
+    def __hash__(self) -> int:
+        # enable hashing of the object, example: legend = StandaloneLegend(); hash(legend)
+        return hash((self.legend_elements, self.legend_labels))
 
     def export(self, filename='legend.png'):
         # Export the legend to an image file

webmap/webmap_lib.py

@@ -3,6 +3,8 @@
 from functions import *
 from copy import deepcopy
 
+from standalone_legend import *
+
 MAP_DATA_LAYERS = [l for l in paths_dict['map_layers']]
 
 # webmap stuff:
@@ -12,6 +14,9 @@
 webmap_base_path = 'oswm_codebase/webmap/webmap_base.html'
 webmap_path = 'map.html'
 
+assets_path = 'oswm_codebase/assets/'
+map_symbols_assets_path = os.path.join(assets_path, 'map_symbols')
+
 # mapping geometry types to maplibre style
 map_geom_type_mapping = {
     'Polygon':'fill',
@@ -238,7 +243,7 @@ def create_base_style(sources=MAP_SOURCES,name='Footway Categories'):
 
     return style_dict
 
-def create_simple_map_style(name,color_schema,sources=MAP_SOURCES,generate_shadow_layers=False):
+def create_simple_map_style(name,color_schema,color_dict,filename,sources=MAP_SOURCES,generate_shadow_layers=False):
 
     style_dict = deepcopy(mapstyle_basedict)
 
@@ -277,7 +282,17 @@ def create_simple_map_style(name,color_schema,sources=MAP_SOURCES,generate_shado
 
 
         style_dict['layers'].append(layer_dict)
-
+
+    # now generating the map symbols
+    # TODO: check the hashing, otherwise no need to re-run
+    style_legend = StandaloneLegend()
+
+    for key in color_dict:
+        style_legend.add_line(label=key, color=color_dict[key])
+
+    style_legend.add_line(label='other', color=color_schema[-1])
+
+    style_legend.export(os.path.join(map_symbols_assets_path,f'{filename}.png'))
 
     return style_dict
 
@@ -358,4 +373,6 @@ def create_crossings_kerbs_style(sources=MAP_SOURCES,name='Crossings and Kerbs',
 
 
     return style_dict
-
+
+# call just once:
+create_folderlist([map_symbols_assets_path])