Enforce unlocked ratio so we can take full control over resolution

Author: BigRoy

client/ayon_cinema4d/api/lib.py

@@ -469,16 +469,24 @@ def set_resolution_from_entity(task_entity, doc=None):
     height: int = int(attrib["resolutionHeight"])
     pixel_aspect: float = attrib["pixelAspect"]
 
+    @contextlib.contextmanager
+    def _unlocked_ratio(render_data):
+        """Temporarily unlock the ratio of the render resolution."""
+        original = render_data[c4d.RDATA_LOCKRATIO]
+        render_data[c4d.RDATA_LOCKRATIO] = False
+        try:
+            yield
+        finally:
+            render_data[c4d.RDATA_LOCKRATIO] = original
+
     rd = doc.GetFirstRenderData()
     while rd:
         # Fix #20: Set the virtual resolution with user interaction so Redshift
         # still triggers some additional checks on the attribute change.
-        # TODO: Confirm whether we must unlock e.g. aspect ratio lock to allow
-        #  changing the render resolution aspect ratio?
-        rd.SetParameter(
-            c4d.RDATA_XRES_VIRTUAL, width, c4d.DESCFLAGS_SET_USERINTERACTION)
-        rd.SetParameter(
-            c4d.RDATA_YRES_VIRTUAL, height, c4d.DESCFLAGS_SET_USERINTERACTION)
+        with _unlocked_ratio(rd):
+            flag = c4d.DESCFLAGS_SET_USERINTERACTION
+            rd.SetParameter(c4d.RDATA_XRES_VIRTUAL, width, flag)
+            rd.SetParameter(c4d.RDATA_YRES_VIRTUAL, height, flag)
 
         # Set pixel aspect ratio
         rd[c4d.RDATA_PIXELASPECT] = pixel_aspect