def read_tag(self, tag, node):
"""Read a tag.
Any tag name that is in self._handlers will be handled.
Similarly any attribute name in self._attribReader._handlers
will be parsed. Both tag and attribute results are stored in
node.
Any path data is ultimately handled by
self._pathReader.add_path(...). For any geometry that is not
already in the 'd' attribute of a 'path' tag this class
converts it first to this format and then delegates it to
add_path(...).
"""
tagName = self._get_tag(tag)
if tagName in self._handlers:
# log.debug("reading tag: " + tagName)
# parse own attributes and overwrite in node
for attr, value in tag.attrib.items():
# log.debug("considering attrib: " + attr)
self._attribReader.read_attrib(node, attr, value)
# accumulate transformations
node['xformToWorld'] = matrixMult(node['xformToWorld'],
node['xform'])
# read tag
if (tagName == 'image'):
self._handlers[tagName](tag, node)
elif (tagName != 'text'):
self._handlers[tagName](node)
else:
self.find_cut_settings_tags(tag, node)
def read_tag(self, tag, node):
"""Read a tag.
Any tag name that is in self._handlers will be handled.
Similarly any attribute name in self._attribReader._handlers
will be parsed. Both tag and attribute results are stored in
node.
Any path data is ultimately handled by
self._pathReader.add_path(...). For any geometry that is not
already in the 'd' attribute of a 'path' tag this class
converts it first to this format and then delegates it to
add_path(...).
"""
tagName = self._get_tag(tag)
if tagName in self._handlers:
# log.debug("reading tag: " + tagName)
# parse own attributes and overwrite in node
for attr,value in tag.attrib.items():
# log.debug("considering attrib: " + attr)
self._attribReader.read_attrib(node, attr, value)
# accumulate transformations
node['xformToWorld'] = matrixMult(node['xformToWorld'], node['xform'])
# read tag
if (tagName == 'image'):
self._handlers[tagName](tag,node)
elif (tagName != 'text'):
self._handlers[tagName](node)
else:
self.find_cut_settings_tags(tag, node)
def transformAttrib(self, node, attr, value):
# http://www.w3.org/TR/SVG11/coords.html#EstablishingANewUserSpace
xforms = []
matches = self.re_findall_transforms(value)
# this parses something like "translate(50,50), rotate(56)"" to
# [('translate(50,50)', 'translate', '50,50'), ('rotate(56)', 'rotate', '56')]
for match in matches:
xformKind = match[1]
params = parseFloats(match[2])
# translate
if xformKind == 'translate':
if len(params) == 1:
xforms.append([1, 0, 0, 1, params[0], params[0]])
elif len(params) == 2:
xforms.append([1, 0, 0, 1, params[0], params[1]])
else:
log.warn('translate skipped; invalid num of params')
# rotate
elif xformKind == 'rotate':
if len(params) == 3:
angle = params[0] * self.DEG_TO_RAD
xforms.append([1, 0, 0, 1, params[1], params[2]])
xforms.append([
math.cos(angle),
math.sin(angle), -math.sin(angle),
math.cos(angle), 0, 0
])
xforms.append([1, 0, 0, 1, -params[1], -params[2]])
elif len(params) == 1:
angle = params[0] * self.DEG_TO_RAD
xforms.append([
math.cos(angle),
math.sin(angle), -math.sin(angle),
math.cos(angle), 0, 0
])
else:
log.warn('rotate skipped; invalid num of params')
#scale
elif xformKind == 'scale':
if len(params) == 1:
xforms.append([params[0], 0, 0, params[0], 0, 0])
elif len(params) == 2:
xforms.append([params[0], 0, 0, params[1], 0, 0])
else:
log.warn('scale skipped; invalid num of params')
# matrix
elif xformKind == 'matrix':
if len(params) == 6:
xforms.append(params)
else:
log.warn('matrix skipped; invalid num of params')
# skewX
elif xformKind == 'skewX':
if len(params) == 1:
angle = params[0] * self.DEG_TO_RAD
xforms.append([1, 0, math.tan(angle), 1, 0, 0])
else:
log.warn('skewX skipped; invalid num of params')
# skewY
elif xformKind == 'skewY':
if len(params) == 1:
angle = params[0] * self.DEG_TO_RAD
xforms.append([1, math.tan(angle), 0, 1, 0, 0])
else:
log.warn('skewY skipped; invalid num of params')
#calculate combined transformation matrix
xform_combined = [1, 0, 0, 1, 0, 0]
for xform in xforms:
xform_combined = matrixMult(xform_combined, xform)
# assign
node['xform'] = xform_combined
def transformAttrib(self, node, attr, value):
# http://www.w3.org/TR/SVG11/coords.html#EstablishingANewUserSpace
xforms = []
matches = self.re_findall_transforms(value)
# this parses something like "translate(50,50), rotate(56)"" to
# [('translate(50,50)', 'translate', '50,50'), ('rotate(56)', 'rotate', '56')]
for match in matches:
xformKind = match[1]
params = parseFloats(match[2])
# translate
if xformKind == 'translate':
if len(params) == 1:
xforms.append([1, 0, 0, 1, params[0], params[0]])
elif len(params) == 2:
xforms.append([1, 0, 0, 1, params[0], params[1]])
else:
log.warn('translate skipped; invalid num of params')
# rotate
elif xformKind == 'rotate':
if len(params) == 3:
angle = params[0] * self.DEG_TO_RAD
xforms.append([1, 0, 0, 1, params[1], params[2]])
xforms.append([math.cos(angle), math.sin(angle), -math.sin(angle), math.cos(angle), 0, 0])
xforms.append([1, 0, 0, 1, -params[1], -params[2]])
elif len(params) == 1:
angle = params[0] * self.DEG_TO_RAD
xforms.append([math.cos(angle), math.sin(angle), -math.sin(angle), math.cos(angle), 0, 0])
else:
log.warn('rotate skipped; invalid num of params')
#scale
elif xformKind == 'scale':
if len(params) == 1:
xforms.append([params[0], 0, 0, params[0], 0, 0])
elif len(params) == 2:
xforms.append([params[0], 0, 0, params[1], 0, 0])
else:
log.warn('scale skipped; invalid num of params')
# matrix
elif xformKind == 'matrix':
if len(params) == 6:
xforms.append(params)
else:
log.warn('matrix skipped; invalid num of params')
# skewX
elif xformKind == 'skewX':
if len(params) == 1:
angle = params[0]*self.DEG_TO_RAD
xforms.append([1, 0, math.tan(angle), 1, 0, 0])
else:
log.warn('skewX skipped; invalid num of params')
# skewY
elif xformKind == 'skewY':
if len(params) == 1:
angle = params[0]*self.DEG_TO_RAD
xforms.append([1, math.tan(angle), 0, 1, 0, 0])
else:
log.warn('skewY skipped; invalid num of params')
#calculate combined transformation matrix
xform_combined = [1,0,0,1,0,0]
for xform in xforms:
xform_combined = matrixMult(xform_combined, xform)
# assign
node['xform'] = xform_combined
