More SVGdraw fixups, make namespaces work on import
This commit is contained in:
Dan Williams
parent
ae2eb70b6c
commit
0ca5a7fed5
@ -227,6 +227,8 @@ class Attribute:
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self.value = value
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self.nsname = nsname
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self.nsref = nsref
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def __repr__(self):
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return "(%s=%s, ns: %s=%s)" % (self.name, self.value, self.nsname, self.nsref)
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def get_attr_value(attrs, name):
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return attrs[name]
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@ -271,7 +273,9 @@ class SVGelement:
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def setParent(self, parent):
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self._parent = parent
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def setAttribute(self, attribute):
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def setAttribute(self, attribute, replace=True):
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if not replace and self.hasAttribute(attribute.name):
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return
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self._attributes[attribute.name] = attribute
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def delAttribute(self, name):
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@ -287,19 +291,63 @@ class SVGelement:
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raise Exception("Can't construct a default object.")
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_construct = staticmethod(_construct)
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def _get_namespace(attrname, nslist):
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colon_idx = attrname.find(':')
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if colon_idx <= 0:
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return (attrname, None, None)
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nsname = attrname[:colon_idx]
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nsref = None
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attrname = attrname[colon_idx+1:]
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for (ns, val) in nslist:
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if ns == nsname:
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nsref = val
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break
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if not nsref:
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nsname = None
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return (attrname, nsname, nsref)
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_get_namespace = staticmethod(_get_namespace)
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_XMLNS_TAG = "xmlns:"
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def construct(name, attributes, text=None, cdata=None):
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try:
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eltClass = elementTable[name]
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except KeyError, e:
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print "Unknown SVG element %s." % e
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return None
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element = eltClass._construct(attributes)
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# Coalesce namespaces into the attributes themselves
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attr_dict = {}
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elt_namespace = None
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namespaces = []
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tmp_attrs = []
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# Separate namespaces from actual attributes
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for attrname, attrvalue in attributes.items():
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element.setAttribute(Attribute(attrname, attrvalue))
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if text:
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element.text = text
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if cdata:
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element.cdata = cdata
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if attrname.startswith(SVGelement._XMLNS_TAG):
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namespaces.append((attrname[len(SVGelement._XMLNS_TAG):], attrvalue))
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elif attrname.startswith("xmlns"):
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# Element-wide attribute
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elt_namespace = attrvalue
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else:
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tmp_attrs.append((attrname, attrvalue))
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# Create attributes and assign namespaces to them
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for (attrname, attrvalue) in tmp_attrs:
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nsname = nsref = None
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attr = None
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# search for its namespace, if any
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(attrname, nsname, nsref) = SVGelement._get_namespace(attrname, namespaces)
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attr = Attribute(attrname, attrvalue, nsname, nsref)
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attr_dict[attrname] = attr
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element = eltClass._construct(attr_dict)
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if element:
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for attr in attr_dict.values():
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element.setAttribute(attr, replace=False)
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if text:
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element.text = text
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if cdata:
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element.cdata = cdata
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if not element.namespace and elt_namespace:
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element.namespace = elt_namespace
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return element
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construct = staticmethod(construct)
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@ -389,10 +437,10 @@ class tref(SVGelement):
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return s
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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return tref(href)
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href = get_attr_value(attributes, 'href')
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if href and href.nsname == 'xlink':
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return tref(href.value)
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return None
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_construct = staticmethod(_construct)
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class spannedtext:
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@ -458,7 +506,7 @@ class rect(SVGelement):
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def _construct(attributes):
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width = get_attr_value(attributes, 'width')
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height = get_attr_value(attributes, 'height')
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return rect(width=width, height=height)
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return rect(width=width.value, height=height.value)
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_construct = staticmethod(_construct)
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@ -490,7 +538,7 @@ class ellipse(SVGelement):
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def _construct(attributes):
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rx = get_attr_value(attributes, 'rx')
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ry = get_attr_value(attributes, 'ry')
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return ellipse(rx=rx, ry=ry)
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return ellipse(rx=rx.value, ry=ry.value)
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_construct = staticmethod(_construct)
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@ -516,10 +564,10 @@ class circle(SVGelement):
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def _construct(attributes):
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r = get_attr_value(attributes, 'r')
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if int(r) == 1:
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if int(r.value) == 1:
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return point()
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else:
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return circle(r=r)
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return circle(r=r.value)
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_construct = staticmethod(_construct)
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@ -529,7 +577,7 @@ class point(circle):
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A point is defined as a circle with a size 1 radius. It may be more efficient to use a
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very small rectangle if you use many points because a circle is difficult to render.
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"""
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def __init__(self,x=None,y=None,fill='black',**args):
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def __init__(self,x=None,y=None,fill=None,**args):
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circle.__init__(self,x,y,1,fill,**args)
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class line(SVGelement):
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@ -573,7 +621,7 @@ class polyline(SVGelement):
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def _construct(attributes):
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points = get_attr_value(attributes, 'points')
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return polyline(points)
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return polyline(points.value)
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_construct = staticmethod(_construct)
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@ -593,7 +641,7 @@ class polygon(SVGelement):
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def _construct(attributes):
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points = get_attr_value(attributes, 'points')
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return polygon(points)
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return polygon(points.value)
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_construct = staticmethod(_construct)
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@ -615,7 +663,7 @@ class path(SVGelement):
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def _construct(attributes):
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pathdata = get_attr_value(attributes, 'd')
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return path(d)
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return path(pathdata.value)
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_construct = staticmethod(_construct)
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@ -656,10 +704,10 @@ class textpath(SVGelement):
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self.text=text
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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return textpath(href)
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href = get_attr_value(attributes, 'href')
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if href and href.nsname == 'xlink':
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return textpath(href.value)
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return None
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_construct = staticmethod(_construct)
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@ -782,7 +830,7 @@ class stop(SVGelement):
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def _construct(attributes):
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offset = get_attr_value(attributes, 'offset')
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return stop(offset)
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return stop(offset.value)
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_construct = staticmethod(_construct)
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class style(SVGelement):
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@ -795,7 +843,7 @@ class style(SVGelement):
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def _construct(attributes):
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type = get_attr_value(attributes, 'type')
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return style(type)
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return style(type.value)
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_construct = staticmethod(_construct)
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@ -820,12 +868,12 @@ class image(SVGelement):
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self.setAttribute(Attribute('y', y))
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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href = get_attr_value(attributes, 'href')
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width = get_attr_value(attributes, 'width')
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height = get_attr_value(attributes, 'height')
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return image(href, width=width, height=height)
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if href and href.nsname == 'xlink':
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return image(href.value, width=width.value, height=height.value)
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return None
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_construct = staticmethod(_construct)
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@ -839,10 +887,10 @@ class cursor(SVGelement):
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self.setAttribute(Attribute('href', url, 'xlink', xlinkNSRef))
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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return cursor(href)
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href = get_attr_value(attributes, 'href')
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if href and href.nsname == 'xlink':
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return cursor(href.value)
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return None
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_construct = staticmethod(_construct)
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@ -955,10 +1003,10 @@ class use(SVGelement):
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self.setAttribute(Attribute('height', height))
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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return use(href)
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href = get_attr_value(attributes, 'href')
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if href and href.nsname == 'xlink':
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return use(href.value)
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return None
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_construct = staticmethod(_construct)
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@ -973,10 +1021,10 @@ class link(SVGelement):
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self.setAttribute(Attribute('href', link, 'xlink', xlinkNSRef))
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def _construct(attributes):
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href = get_attr_value(attributes, 'xlink:href')
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if href and href.startswith("xlink:"):
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href = href[len("xlink:"):]
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return link(href)
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href = get_attr_value(attributes, 'href')
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if href and href.nsname == 'xlink':
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return link(href.value)
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return None
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_construct = staticmethod(_construct)
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@ -1005,7 +1053,7 @@ class script(SVGelement):
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def _construct(attributes):
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type = get_attr_value(attributes, 'type')
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return script(type, cdata=cdata)
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return script(type.value, cdata=cdata.value)
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_construct = staticmethod(_construct)
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@ -1025,7 +1073,7 @@ class animate(SVGelement):
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def _construct(attributes):
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attribute = get_attr_value(attributes, 'attributeName')
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return animate(attribute)
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return animate(attribute.value)
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_construct = staticmethod(_construct)
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@ -1086,7 +1134,7 @@ class animateColor(SVGelement):
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def _construct(attributes):
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attribute = get_attr_value(attributes, 'attributeName')
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return animateColor(attribute)
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return animateColor(attribute.value)
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_construct = staticmethod(_construct)
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@ -1104,7 +1152,7 @@ class set(SVGelement):
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def _construct(attributes):
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attribute = get_attr_value(attributes, 'attributeName')
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return set(attribute)
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return set(attribute.value)
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_construct = staticmethod(_construct)
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@ -1190,13 +1238,15 @@ class SVGImportParser(object):
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def StartElementHandler(self, name, attrs):
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self.log("<%s>" % name)
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self._indent = self._indent + 1
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import copy
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attrs = copy.deepcopy(attrs)
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for attrname, attrvalue in attrs.items():
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self.log("%s = %s" % (attrname, attrvalue))
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parent = self._stack.peek()
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elt = SVGelement.construct(name, attrs)
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if not self._base:
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self._base = elt
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if parent:
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if parent and elt:
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parent.addElement(elt)
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self._stack.push(elt)
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@ -1214,6 +1264,8 @@ class SVGImportParser(object):
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self.log("Text = '%s'" % content.strip())
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elt = self._stack.peek()
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if elt:
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if not elt.text:
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elt.text = ""
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elt.text = elt.text + content.strip()
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def EndCdataSectionHandler(self):
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@ -1425,16 +1477,14 @@ elementTable = {
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'svg': svg
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}
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def main():
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d=drawing()
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def from_file(document):
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import sys
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f = open(sys.argv[1], "r")
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fc = f.read()
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d.fromXml(fc)
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print d.toXml()
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return
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document.fromXml(fc)
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print document.toXml()
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def to_file(document):
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s=svg((0,0,100,100))
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r=rect(-100,-100,300,300,'cyan')
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s.addElement(r)
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@ -1465,10 +1515,14 @@ def main():
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for j in range(5,105,10):
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c=circle(i,j,1,'red','black',.5)
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s.addElement(c)
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d.setSVG(s)
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document.setSVG(s)
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print d.toXml()
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print document.toXml()
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def main():
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d=drawing()
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from_file(d)
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# to_file(d)
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if __name__=='__main__':
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main()
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