initial level and initial bounds

src/c3nav/settings.py

@@ -81,6 +81,17 @@ SVG_RENDERER = config.get('c3nav', 'svg_renderer', fallback='rsvg-convert')
 CACHE_TILES = config.get('c3nav', 'cache_tiles', fallback=not DEBUG)
 CACHE_RESOLUTION = config.get('c3nav', 'cache_resolution', fallback=4)
 
+INITIAL_LEVEL = config.get('c3nav', 'initial_level', fallback=None)
+INITIAL_BOUNDS = config.get('c3nav', 'initial_bounds', fallback=None).split(' ')
+
+if len(INITIAL_BOUNDS) == 4:
+    try:
+        INITIAL_BOUNDS = tuple(float(i) for i in INITIAL_BOUNDS)
+    except ValueError:
+        INITIAL_BOUNDS = None
+else:
+    INITIAL_BOUNDS = None
+
 db_backend = config.get('database', 'backend', fallback='sqlite3')
 DATABASES = {
     'default': {

src/c3nav/site/static/site/js/c3nav.js

@@ -907,6 +907,20 @@ c3nav = {
         c3nav.levels = JSON.parse($map.attr('data-levels'));
         c3nav.tile_server = $map.attr('data-tile-server');
 
+        if ($map.is('[data-initial-bounds]')) {
+            var bounds = JSON.parse($map.attr('data-initial-bounds'));
+            bounds = [bounds.slice(0, 2), bounds.slice(2)];
+            c3nav.initial_bounds = bounds;
+        } else {
+            c3nav.initial_bounds = c3nav.bounds
+        }
+
+        if ($map.is('[data-initial-level]')) {
+            c3nav.initial_level = parseInt($map.attr('data-initial-level'));
+        } else {
+            c3nav.initial_level = c3nav.levels[0][0];
+        }
+
         c3nav.level_labels_by_id = {};
         for (i = 0; i < c3nav.levels.length; i ++) {
             c3nav.level_labels_by_id[c3nav.levels[i][0]] = c3nav.levels[i][1];
@@ -933,7 +947,7 @@ c3nav = {
             $('.leaflet-touch').removeClass('leaflet-touch');
         }
 
-        c3nav.map.fitBounds(L.GeoJSON.coordsToLatLngs(c3nav.bounds), c3nav._add_map_padding({}));
+        c3nav.map.fitBounds(L.GeoJSON.coordsToLatLngs(c3nav.initial_bounds), c3nav._add_map_padding({}));
 
         c3nav.map.on('moveend', c3nav._map_moved);
         c3nav.map.on('zoomend', c3nav._map_zoomed);
@@ -960,7 +974,7 @@ c3nav = {
             c3nav._routeLayers[level[0]] = L.layerGroup().addTo(layerGroup);
         }
         c3nav._levelControl.finalize();
-        c3nav._levelControl.setLevel(c3nav.levels[0][0]);
+        c3nav._levelControl.setLevel(c3nav.initial_level);
 
         c3nav.map.on('click', c3nav._click_anywhere);
 

src/c3nav/site/templates/site/map.html

@@ -15,7 +15,12 @@
             <a href="https://twitter.com/c3nav/" rel="external" target="_blank">Twitter</a> //
             <a href="https://github.com/c3nav/c3nav/" rel="external" target="_blank">GitHub</a>
         </section>
-        <section id="map" data-bounds="{{ bounds }}" data-levels="{{ levels }}"{% if tile_cache_server %} data-tile-server="{{ tile_cache_server }}"{% endif %}></section>
+        <section id="map" data-bounds="{{ bounds }}"
+                 data-levels="{{ levels }}"
+                 {% if tile_cache_server %}data-tile-server="{{ tile_cache_server }}"{% endif %}
+                 {% if initial_level %}data-initial-level="{{ initial_level }}"{% endif %}
+                 {% if initial_bounds %}data-initial-bounds="{{ initial_bounds }}"{% endif %}>
+        </section>
         {% if not embed %}
             <section id="messages">{% include 'site/fragment_messages.html' %}</section>
             <section id="popup-buttons">

src/c3nav/site/views.py

@@ -118,6 +118,8 @@ def map_index(request, mode=None, slug=None, slug2=None, details=None, options=N
         'levels': json.dumps(tuple((level.pk, level.short_label) for level in levels.values()), separators=(',', ':')),
         'state': json.dumps(state, separators=(',', ':'), cls=DjangoJSONEncoder),
         'tile_cache_server': settings.TILE_CACHE_SERVER,
+        'initial_level': settings.INITIAL_LEVEL,
+        'initial_bounds': json.dumps(settings.INITIAL_BOUNDS, separators=(',', ':')),
         'embed': bool(embed),
     }