def add_char_blocks(stack: PDFStateStack, seq: bytearray) -> PDFStateStack:
if stack.text.font is None:
raise InvalidOperation("No Font Specified")
if stack.current_textblock is None:
raise InvalidOperation("No TextBlock initilized")
stack.current_textblock.add_char_block(seq, stack.t_matrix,
stack.text.copy(),
stack.graphics.ncolor.copy())
return stack
def insert_xobject(stack: PDFStateStack, xobjid) -> PDFStateStack:
xobjid = literal_name(xobjid)
try:
xobj = PDFStream.validated_stream(stack.xobjmap[xobjid])
except KeyError:
raise InvalidOperation('Undefined xobject id: %r' % xobjid)
# log.info('Processing xobj: %r', xobj)
subtype = xobj.get('Subtype')
if subtype is LITERAL_FORM and 'BBox' in xobj:
bbox = list_value(xobj['BBox'])
matrix = list_value(xobj.get('Matrix', MATRIX_IDENTITY))
# According to PDF reference 1.7 section 4.9.1, XObjects in
# earlier PDFs (prior to v1.2) use the page's Resources entry
# instead of having their own Resources entry.
xobjres = xobj.get('Resources')
resources = dict_value(xobjres) if xobjres else stack.resources.copy()
stack.complete_layout_items.append(
make_xobject(obj=xobj,
bbox=bbox,
ctm=stack.t_matrix,
matrix=matrix,
resources=resources))
elif subtype is LITERAL_IMAGE and 'Width' in xobj and 'Height' in xobj:
stack.complete_layout_items.append(make_image(xobj, stack.t_matrix))
else:
# unsupported xobject type.
pass
return stack
def set_font(stack: PDFStateStack, fontid, fontsize) -> PDFStateStack:
stack.text.fontsize = fontsize
try:
stack.text.font = stack.fontmap[literal_name(fontid)]
return stack
except KeyError:
raise InvalidOperation('Undefined Font id: %r' % fontid)
def begin_text(stack: PDFStateStack) -> PDFStateStack:
stack.text.matrix = MATRIX_IDENTITY
stack.text.linematrix = [0, 0]
if stack.current_textblock is None:
stack.current_textblock = LTTextBlock()
else:
raise InvalidOperation("Last TextBlock did not clear")
return stack
def set_nonstroke_colorspace_custom(stack: PDFStateStack) -> PDFStateStack:
if stack.graphics.ncolspace is None:
raise InvalidOperation('No colorspace specified!')
components = stack.pop(stack.graphics.ncolspace.ncomponents)
stack.graphics.set_nostroke_color(stack.graphics.ncolspace, *components)
return stack
def set_nonstroke_colorspace(stack: PDFStateStack, name: str) -> PDFStateStack:
try:
stack.graphics.ncolspace = stack.colorspace_map[literal_name(name)]
return stack
except KeyError:
raise InvalidOperation('Undefined ColorSpace: %r' % name)