Implement support for drawing any SVG file to map

lib/xmet/map.py

@@ -29,14 +29,20 @@ class EquirectMap():
         self.map_width  = bounds[1] - bounds[3]
         self.map_height = bounds[0] - bounds[2]
 
-    def draw_from_file(self, cr: cairo.Context, path: str):
+    def draw_from_file(self,
+                       cr: cairo.Context,
+                       path: str,
+                       x: float,
+                       y: float,
+                       width: float,
+                       height: float):
         svg = Rsvg.Handle.new_from_file(path)
 
         rect = Rsvg.Rectangle()
-        rect.x      = 0
-        rect.y      = 0
-        rect.width  = self.width
-        rect.height = self.height
+        rect.x      = x
+        rect.y      = y
+        rect.width  = width
+        rect.height = height
 
         svg.render_layer(cr, None, rect)