Match photo selection and rendered canvas to device rotation

pigway_frame_flow/renderers/frame_geometry.py

@@ -0,0 +1,10 @@
+"""Resolve a device's visual canvas without coupling rendering to its driver."""
+
+
+def frame_canvas(display, orientation=None):
+    width, height = display.width, display.height
+    if orientation == "landscape":
+        return max(width, height), min(width, height)
+    if orientation == "portrait":
+        return min(width, height), max(width, height)
+    return (height, width) if display.rotation % 180 == 90 else (width, height)