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fix(com): a DXF type filter finds what ActiveX names differently

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block_find_references asks entity_list(type_filter="INSERT"), and ActiveX
calls a block reference AcDbBlockReference, so on a live seat the filter
matched nothing and every block reported zero references. Measured on
AutoCAD 2026 (25.1s): AcDbBlockReference, AcDbPolyline, and one class per
dimension kind (AcDbRotatedDimension, AcDbAlignedDimension,
AcDbDiametricDimension, AcDbRadialDimension, AcDb2LineAngularDimension,
AcDbOrdinateDimension).

entity_list and entity_count now let the DXF name find them: INSERT matches
BLOCKREFERENCE/MINSERTBLOCK, LWPOLYLINE matches POLYLINE, and DIMENSION every
*DIMENSION class. The reported type stays the ActiveX spelling, so a caller
already filtering by it is unaffected. Verified live in a scratch document:
two inserts, one dimension and one line are found by INSERT, DIMENSION and
LINE (the INSERT filter found 0 before).

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
This commit is contained in:
Umut CAN
2026-09-23 13:39:41 +03:00
co-authored by Claude Opus 5.5
parent 898e775f93
commit e6f685643d
3 changed files with 103 additions and 5 deletions
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backends/com_backend.py
+23 -4
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@@ -1245,6 +1245,26 @@ def _com_geometry_bbox(entity) -> dict | None:
_COM_LWPOLYLINE_NAMES = ("AcDbPolyline", "AcDbLWPolyline")
# A tool filters by the DXF entity name; ActiveX names three of them differently
# (measured on AutoCAD 2026: AcDbBlockReference, AcDbPolyline and one class per
# dimension kind). The reported type stays the ActiveX spelling, so a caller
# already filtering by it is unaffected; the DXF name simply finds them too.
_DXF_TYPE_ALIASES: dict[str, frozenset[str]] = {
"INSERT": frozenset({"BLOCKREFERENCE", "MINSERTBLOCK"}),
"LWPOLYLINE": frozenset({"POLYLINE"}),
}
def _type_filter_matches(type_filter: str, ent_type: str) -> bool:
"""True when an entity whose ActiveX type is ``ent_type`` answers ``type_filter``."""
wanted = type_filter.upper()
if ent_type == wanted or ent_type in _DXF_TYPE_ALIASES.get(wanted, ()):
return True
# DXF has one DIMENSION entity; ActiveX has AcDbRotatedDimension,
# AcDbAlignedDimension, AcDbDiametricDimension, AcDb2LineAngularDimension, …
return wanted == "DIMENSION" and ent_type.endswith("DIMENSION")
def _entity_info(entity) -> EntityInfo:
"""Convert a COM entity object to EntityInfo dataclass."""
try:
@@ -5275,7 +5295,7 @@ class ComBackend(AutoCADBackend):
ent_type = ent.ObjectName.replace("AcDb", "").upper()
ent_layer = ent.Layer
if type_filter and type_filter.upper() != ent_type:
if type_filter and not _type_filter_matches(type_filter, ent_type):
continue
if layer_filter and layer_filter.lower() != ent_layer.lower():
continue
@@ -5307,9 +5327,8 @@ class ComBackend(AutoCADBackend):
for i in range(mspace.Count):
try:
ent = mspace.Item(i)
if (
type_filter
and type_filter.upper() != ent.ObjectName.replace("AcDb", "").upper()
if type_filter and not _type_filter_matches(
type_filter, ent.ObjectName.replace("AcDb", "").upper()
):
continue
if layer_filter and layer_filter.lower() != ent.Layer.lower():