def set_arrows(self,
blk: str = '',
blk1: str = '',
blk2: str = '',
ldrblk: str = '') -> None:
"""
Set arrows by block names or AutoCAD standard arrow names, set DIMTSZ to ``0`` which disables tick.
Args:
blk: block/arrow name for both arrows, if DIMSAH is ``0``
blk1: block/arrow name for first arrow, if DIMSAH is ``1``
blk2: block/arrow name for second arrow, if DIMSAH is ``1``
ldrblk: block/arrow name for leader
"""
self.set_dxf_attrib('dimblk', blk)
self.set_dxf_attrib('dimblk1', blk1)
self.set_dxf_attrib('dimblk2', blk2)
self.set_dxf_attrib('dimldrblk', ldrblk)
self.set_dxf_attrib('dimtsz', 0) # use blocks
# only existing BLOCK definitions allowed
if self.doc:
blocks = self.doc.blocks
for b in (blk, blk1, blk2, ldrblk):
if ARROWS.is_acad_arrow(b): # not real blocks
ARROWS.create_block(blocks, b)
continue
if b and b not in blocks:
raise DXFValueError(
'BLOCK "{}" does not exist.'.format(blk))
def acquire_arrow(self, name: str):
""" For standard AutoCAD and ezdxf arrows create block definitions if
required, otherwise check if block `name` exist. (internal API)
"""
from ezdxf.render.arrows import ARROWS
if ARROWS.is_acad_arrow(name) or ARROWS.is_ezdxf_arrow(name):
ARROWS.create_block(self.blocks, name)
elif name not in self.blocks:
raise const.DXFValueError(f'Arrow block "{name}" does not exist.')
def create_all_arrow_blocks(self):
"""
For upgrading DXF R12/13/14 files to R2000, it is necessary to create all used arrow blocks before saving the
DXF file, else $HANDSEED is not the next available handle, which is a problem for AutoCAD.
To be save create all known AutoCAD arrows, because references to arrow blocks can be in DIMSTYLE,
DIMENSION override, LEADER override and maybe other places.
"""
from ezdxf.render.arrows import ARROWS
for arrow_name in ARROWS.__acad__:
ARROWS.create_block(self.blocks, arrow_name)
def set_arrow_handle(attrib_name, block_name):
attrib_name += '_handle'
if block_name in ARROWS: # create all arrows on demand
block_name = ARROWS.create_block(blocks, block_name)
if block_name == '_CLOSEDFILLED': # special arrow
handle = '0' # set special #0 handle for closed filled arrow
else:
block = blocks[block_name]
handle = block.block_record_handle
data[attrib_name] = handle
def _set_blk_handle(self, attr: str, arrow_name: str) -> None:
if arrow_name == ARROWS.closed_filled:
# special arrow, no handle needed (is '0' if set)
# do not create block by default, this will be done if arrow is used
# and block record handle is not needed here
self.del_dxf_attrib(attr)
return
blocks = self.drawing.blocks
if ARROWS.is_acad_arrow(arrow_name):
# create block, because need block record handle is needed here
block_name = ARROWS.create_block(blocks, arrow_name)
else:
block_name = arrow_name
blk = blocks.get(block_name)
self.set_dxf_attrib(attr, blk.block_record_handle)
def set_blk_handle(self, attr: str, arrow_name: str) -> None:
if arrow_name == ARROWS.closed_filled:
# special arrow, no handle needed (is '0' if set)
# do not create block by default, this will be done if arrow is used
# and block record handle is not needed here
self.dxf.discard(attr)
return
blocks = self.doc.blocks
if ARROWS.is_acad_arrow(arrow_name):
# create block, because need block record handle is needed here
block_name = ARROWS.create_block(blocks, arrow_name)
else:
block_name = arrow_name
blk = blocks.get(block_name)
if blk is not None:
self.set_dxf_attrib(attr, blk.block_record_handle)
else:
raise DXFValueError(f'Block {arrow_name} does not exist.')
def test_closed_arrow_doc_r2000():
doc = ezdxf.new(dxfversion="R2000", setup=True)
blocks = doc.blocks
name = ARROWS.create_block(blocks, ARROWS.closed)
arrow_entities = list(blocks.get(name))
assert arrow_entities[0].dxftype() == "LWPOLYLINE"
def test_closed_arrow_r2000(dxf2000):
blocks = dxf2000.blocks
name = ARROWS.create_block(blocks, ARROWS.closed)
arrow_entities = list(blocks.get(name))
assert arrow_entities[0].dxftype() == 'LWPOLYLINE'