🎨 Improve parsing support for region#Visual

src/ipyaladin/aladin.py

@@ -386,7 +386,14 @@ def add_graphic_overlay_from_region(
         `~regions.LineSkyRegion`,`~regions.PolygonSkyRegion`,
         `~regions.RectangleSkyRegion`, `~regions.Regions`
             The region to add in Aladin Lite. It can be given
-            as a supported region or a list of regions from the regions package
+            as a supported region or a list of regions from the regions package.
+            Region Visual object is mapped to graphic options with the following
+            mapping:
+            - edgecolor -> color
+            - facecolor -> fillColor
+            - color -> color & fillColor
+            - alpha -> opacity
+            - linewidth -> lineWidth
         graphic_options: keyword arguments
             The options for the graphic overlay. Use Region visual for region options.
             See graphicOverlay options  here https://cds-astro.github.io/aladin-lite/A.html

src/ipyaladin/region_converter.py

@@ -183,12 +183,19 @@ def _from_rectangle_sky_region(self, region: RectangleSkyRegion) -> None:
 
     def _parse_visuals(self, region: Region) -> None:
         visual = dict(region.visual)
-        if "linewidth" in visual:
-            visual["line_width"] = visual.pop("linewidth")
+        # Color parsing
         if "facecolor" in visual:
             visual["fill_color"] = visual.pop("facecolor")
         if "edgecolor" in visual:
             visual["color"] = visual.pop("edgecolor")
+        if "color" in visual:
+            visual["fill_color"] = visual["color"]
+
+        # Other parsing
+        if "alpha" in visual:
+            visual["opacity"] = visual.pop("alpha")
+        if "linewidth" in visual:
+            visual["line_width"] = visual.pop("linewidth")
         self.options = visual
 
     def to_clean_dict(self) -> dict: