def extract_mtext_text_frame_handles(xdata: XData) -> List[str]:
# Stores information about the text frame until DXF R2018.
# Newer CAD applications do not need that information nor the separated
# LWPOLYLINE as text frame entity.
handles: List[str] = []
if "ACAD" in xdata:
acad = xdata.get("ACAD")
else:
return handles
try:
start, end = find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_TEXT_BORDERS", acad)
except NotFoundException:
return handles
for code, value in acad[start:end]:
# multiple handles to a LWPOLYLINE entity could be present:
if code == 1005:
handles.append(value)
# remove MTEXT_TEXT_BORDERS data
del acad[start:end]
if len(acad) < 2:
xdata.discard("ACAD")
return handles
def load_mtext_linked_column_handles(tags: Tags) -> List[str]:
handles = []
try:
start, end = find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_COLUMNS", tags)
except NotFoundException:
return handles
for code, value in tags[start:end]:
if code == 1005:
handles.append(value)
return handles
def load_mtext_column_info(tags: Tags) -> Optional[MTextColumns]:
try: # has column info?
start, end = find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_COLUMN_INFO", tags)
except NotFoundException:
return None
columns = MTextColumns()
height_count = 0
group_code = None
for code, value in tags[start + 1:end]:
if height_count:
if code == 1040:
columns.heights.append(value)
height_count -= 1
continue
else: # error
logger.error("missing column heights in MTEXT entity")
height_count = 0
if group_code is None:
group_code = value
continue
if group_code == 75:
columns.column_type = ColumnType(value)
elif group_code == 79:
columns.auto_height = bool(value)
elif group_code == 76:
# column count, may not match the count of linked MTEXT entities!
columns.count = int(value)
elif group_code == 78:
columns.reversed_column_flow = bool(value)
elif group_code == 48:
columns.width = value
elif group_code == 49:
columns.gutter_width = value
elif group_code == 50:
height_count = int(value)
group_code = None
return columns
def load_mtext_defined_height(tags: Tags) -> float:
# The defined height stored in the linked MTEXT entities, is not required:
#
# If all columns have the same height (static & dynamic auto height), the
# "defined_height" is stored in the main MTEXT, but the linked MTEXT entities
# also have a "ACAD_MTEXT_DEFINED_HEIGHT" group in the ACAD section of XDATA.
#
# If the columns have different heights (dynamic manual height), these
# height values are only stored in the main MTEXT. The linked MTEXT
# entities do not have an ACAD section at all.
height = 0.0
try:
start, end = find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_DEFINED_HEIGHT", tags)
except NotFoundException:
return height
for code, value in tags[start:end]:
if code == 1040:
height = value
return height
def test_raise_exception_without_begin_tag(self):
with pytest.raises(DXFStructureError):
find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_COLUMN_INFO", Tags.from_text(WITHOUT_BEGIN_TAG))
def test_raise_exception_if_not_found(self):
with pytest.raises(NotFoundException):
find_begin_and_end_of_encoded_xdata_tags(
"MOZMAN", Tags.from_text(COLUMNS_SPEC))
def test_find_begin_and_end_of_column_info(self):
start, end = find_begin_and_end_of_encoded_xdata_tags(
"ACAD_MTEXT_COLUMN_INFO", Tags.from_text(COLUMNS_SPEC))
assert start, end == (1, 3)
