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-rw-r--r--wqflask/utility/svg.py321
1 files changed, 184 insertions, 137 deletions
diff --git a/wqflask/utility/svg.py b/wqflask/utility/svg.py
index f737d2f2..c850feb8 100644
--- a/wqflask/utility/svg.py
+++ b/wqflask/utility/svg.py
@@ -25,54 +25,56 @@
# Last updated by GeneNetwork Core Team 2010/10/20
#!/usr/bin/env python
-##Copyright (c) 2002, Fedor Baart & Hans de Wit (Stichting Farmaceutische Kengetallen)
-##All rights reserved.
+# Copyright (c) 2002, Fedor Baart & Hans de Wit (Stichting Farmaceutische Kengetallen)
+# All rights reserved.
##
-##Redistribution and use in source and binary forms, with or without modification,
-##are permitted provided that the following conditions are met:
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
##
-##Redistributions of source code must retain the above copyright notice, this
-##list of conditions and the following disclaimer.
+# Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
##
-##Redistributions in binary form must reproduce the above copyright notice,
-##this list of conditions and the following disclaimer in the documentation and/or
-##other materials provided with the distribution.
+# Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation and/or
+# other materials provided with the distribution.
##
-##Neither the name of the Stichting Farmaceutische Kengetallen nor the names of
-##its contributors may be used to endorse or promote products derived from this
-##software without specific prior written permission.
+# Neither the name of the Stichting Farmaceutische Kengetallen nor the names of
+# its contributors may be used to endorse or promote products derived from this
+# software without specific prior written permission.
##
-##THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-##AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-##IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-##DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
-##FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-##DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-##SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-##CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-##OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-##OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Thanks to Gerald Rosennfellner for his help and useful comments.
-##Thanks to Gerald Rosennfellner for his help and useful comments.
-
-__doc__="""Use SVGdraw to generate your SVGdrawings.
+import sys
+import exceptions
+__doc__ = """Use SVGdraw to generate your SVGdrawings.
SVGdraw uses an object model drawing and a method toXML to create SVG graphics
by using easy to use classes and methods usualy you start by creating a drawing eg
d=drawing()
- #then you create a SVG root element
+ # then you create a SVG root element
s=svg()
- #then you add some elements eg a circle and add it to the svg root element
+ # then you add some elements eg a circle and add it to the svg root element
c=circle()
- #you can supply attributes by using named arguments.
+ # you can supply attributes by using named arguments.
c=circle(fill='red',stroke='blue')
- #or by updating the attributes attribute:
+ # or by updating the attributes attribute:
c.attributes['stroke-width']=1
s.addElement(c)
- #then you add the svg root element to the drawing
+ # then you add the svg root element to the drawing
d.setSVG(s)
- #and finaly you xmlify the drawing
+ # and finaly you xmlify the drawing
d.toXml()
@@ -82,7 +84,7 @@ This module was created using the SVG specification of www.w3c.org and the
O'Reilly (www.oreilly.com) python books as information sources. A svg viewer
is available from www.adobe.com"""
-__version__="1.0"
+__version__ = "1.0"
# there are two possibilities to generate svg:
# via a dom implementation and directly using <element>text</element> strings
@@ -93,33 +95,34 @@ __version__="1.0"
# Note that PyXML is required for using the dom implementation.
# It is also possible to use the standard minidom. But I didn't try that one.
# Anyway the text based approach is about 60 times faster than using the full dom implementation.
-use_dom_implementation=0
+use_dom_implementation = 0
-import exceptions
-if use_dom_implementation!=0:
+if use_dom_implementation != 0:
try:
from xml.dom import implementation
from xml.dom.ext import PrettyPrint
except:
- raise exceptions.ImportError("PyXML is required for using the dom implementation")
-#The implementation is used for the creating the XML document.
-#The prettyprint module is used for converting the xml document object to a xml file
+ raise exceptions.ImportError(
+ "PyXML is required for using the dom implementation")
+# The implementation is used for the creating the XML document.
+# The prettyprint module is used for converting the xml document object to a xml file
+
+assert sys.version_info[0] >= 2
+if sys.version_info[1] < 2:
+ True = 1
+ False = 0
+ file = open
+
+sys.setrecursionlimit = 50
+# The recursion limit is set conservative so mistakes like s=svg() s.addElement(s)
+# won't eat up too much processor time.
+
+# the following code is pasted form xml.sax.saxutils
+# it makes it possible to run the code without the xml sax package installed
+# To make it possible to have <rubbish> in your text elements, it is necessary to escape the texts
+
-import sys
-assert sys.version_info[0]>=2
-if sys.version_info[1]<2:
- True=1
- False=0
- file=open
-
-sys.setrecursionlimit=50
-#The recursion limit is set conservative so mistakes like s=svg() s.addElement(s)
-#won't eat up too much processor time.
-
-#the following code is pasted form xml.sax.saxutils
-#it makes it possible to run the code without the xml sax package installed
-#To make it possible to have <rubbish> in your text elements, it is necessary to escape the texts
def _escape(data, entities={}):
"""Escape &, <, and > in a string of data.
@@ -127,13 +130,14 @@ def _escape(data, entities={}):
the optional entities parameter. The keys and values must all be
strings; each key will be replaced with its corresponding value.
"""
- #data = data.replace("&", "&amp;")
+ # data = data.replace("&", "&amp;")
data = data.replace("<", "&lt;")
data = data.replace(">", "&gt;")
for chars, entity in entities.items():
data = data.replace(chars, entity)
return data
+
def _quoteattr(data, entities={}):
"""Escape and quote an attribute value.
@@ -156,96 +160,121 @@ def _quoteattr(data, entities={}):
return data
-
def _xypointlist(a):
"""formats a list of xy pairs"""
- s=''
- for e in a: #this could be done more elegant
- s+=str(e)[1:-1] +' '
+ s = ''
+ for e in a: # this could be done more elegant
+ s += str(e)[1:-1] + ' '
return s
+
def _viewboxlist(a):
"""formats a tuple"""
- s=''
+ s = ''
for e in a:
- s+=str(e)+' '
+ s += str(e)+' '
return s
+
def _pointlist(a):
"""formats a list of numbers"""
return str(a)[1:-1]
+
class pathdata:
"""class used to create a pathdata object which can be used for a path.
although most methods are pretty straightforward it might be useful to look at the SVG specification."""
- #I didn't test the methods below.
- def __init__(self,x=None,y=None):
- self.path=[]
+ # I didn't test the methods below.
+
+ def __init__(self, x=None, y=None):
+ self.path = []
if x is not None and y is not None:
self.path.append('M '+str(x)+' '+str(y))
+
def closepath(self):
"""ends the path"""
self.path.append('z')
- def move(self,x,y):
+
+ def move(self, x, y):
"""move to absolute"""
self.path.append('M '+str(x)+' '+str(y))
- def relmove(self,x,y):
+
+ def relmove(self, x, y):
"""move to relative"""
self.path.append('m '+str(x)+' '+str(y))
- def line(self,x,y):
+
+ def line(self, x, y):
"""line to absolute"""
self.path.append('L '+str(x)+' '+str(y))
- def relline(self,x,y):
+
+ def relline(self, x, y):
"""line to relative"""
self.path.append('l '+str(x)+' '+str(y))
- def hline(self,x):
+
+ def hline(self, x):
"""horizontal line to absolute"""
self.path.append('H'+str(x))
- def relhline(self,x):
+
+ def relhline(self, x):
"""horizontal line to relative"""
self.path.append('h'+str(x))
- def vline(self,y):
+
+ def vline(self, y):
"""verical line to absolute"""
self.path.append('V'+str(y))
- def relvline(self,y):
+
+ def relvline(self, y):
"""vertical line to relative"""
self.path.append('v'+str(y))
- def bezier(self,x1,y1,x2,y2,x,y):
+
+ def bezier(self, x1, y1, x2, y2, x, y):
"""bezier with xy1 and xy2 to xy absolut"""
- self.path.append('C'+str(x1)+','+str(y1)+' '+str(x2)+','+str(y2)+' '+str(x)+','+str(y))
- def relbezier(self,x1,y1,x2,y2,x,y):
+ self.path.append('C'+str(x1)+','+str(y1)+' '+str(x2) +
+ ','+str(y2)+' '+str(x)+','+str(y))
+
+ def relbezier(self, x1, y1, x2, y2, x, y):
"""bezier with xy1 and xy2 to xy relative"""
- self.path.append('c'+str(x1)+','+str(y1)+' '+str(x2)+','+str(y2)+' '+str(x)+','+str(y))
- def smbezier(self,x2,y2,x,y):
+ self.path.append('c'+str(x1)+','+str(y1)+' '+str(x2) +
+ ','+str(y2)+' '+str(x)+','+str(y))
+
+ def smbezier(self, x2, y2, x, y):
"""smooth bezier with xy2 to xy absolut"""
self.path.append('S'+str(x2)+','+str(y2)+' '+str(x)+','+str(y))
- def relsmbezier(self,x2,y2,x,y):
+
+ def relsmbezier(self, x2, y2, x, y):
"""smooth bezier with xy2 to xy relative"""
self.path.append('s'+str(x2)+','+str(y2)+' '+str(x)+','+str(y))
- def qbezier(self,x1,y1,x,y):
+
+ def qbezier(self, x1, y1, x, y):
"""quadratic bezier with xy1 to xy absolut"""
self.path.append('Q'+str(x1)+','+str(y1)+' '+str(x)+','+str(y))
- def relqbezier(self,x1,y1,x,y):
+
+ def relqbezier(self, x1, y1, x, y):
"""quadratic bezier with xy1 to xy relative"""
self.path.append('q'+str(x1)+','+str(y1)+' '+str(x)+','+str(y))
- def smqbezier(self,x,y):
+
+ def smqbezier(self, x, y):
"""smooth quadratic bezier to xy absolut"""
self.path.append('T'+str(x)+','+str(y))
- def relsmqbezier(self,x,y):
+
+ def relsmqbezier(self, x, y):
"""smooth quadratic bezier to xy relative"""
self.path.append('t'+str(x)+','+str(y))
- def ellarc(self,rx,ry,xrot,laf,sf,x,y):
+
+ def ellarc(self, rx, ry, xrot, laf, sf, x, y):
"""elliptival arc with rx and ry rotating with xrot using large-arc-flag and sweep-flag to xy absolut"""
- self.path.append('A'+str(rx)+','+str(ry)+' '+str(xrot)+' '+str(laf)+' '+str(sf)+' '+str(x)+' '+str(y))
- def relellarc(self,rx,ry,xrot,laf,sf,x,y):
+ self.path.append('A'+str(rx)+','+str(ry)+' '+str(xrot) +
+ ' '+str(laf)+' '+str(sf)+' '+str(x)+' '+str(y))
+
+ def relellarc(self, rx, ry, xrot, laf, sf, x, y):
"""elliptival arc with rx and ry rotating with xrot using large-arc-flag and sweep-flag to xy relative"""
- self.path.append('a'+str(rx)+','+str(ry)+' '+str(xrot)+' '+str(laf)+' '+str(sf)+' '+str(x)+' '+str(y))
+ self.path.append('a'+str(rx)+','+str(ry)+' '+str(xrot) +
+ ' '+str(laf)+' '+str(sf)+' '+str(x)+' '+str(y))
+
def __repr__(self):
return ' '.join(self.path)
-
-
class SVGelement:
"""SVGelement(type,attributes,elements,text,namespace,**args)
Creates a arbitrary svg element and is intended to be subclassed not used on its own.
@@ -256,52 +285,56 @@ class SVGelement:
namespace. Note the elements==None, if elements = None:self.elements=[] construction.
This is done because if you default to elements=[] every object has a reference
to the same empty list."""
- def __init__(self,type='',attributes=None,elements=None,text='',namespace='',cdata=None, **args):
- self.type=type
- if attributes==None:
- self.attributes={}
+
+ def __init__(self, type='', attributes=None, elements=None, text='', namespace='', cdata=None, **args):
+ self.type = type
+ if attributes == None:
+ self.attributes = {}
else:
- self.attributes=attributes
- if elements==None:
- self.elements=[]
+ self.attributes = attributes
+ if elements == None:
+ self.elements = []
else:
- self.elements=elements
- self.text=text
- self.namespace=namespace
- self.cdata=cdata
+ self.elements = elements
+ self.text = text
+ self.namespace = namespace
+ self.cdata = cdata
for arg in args.keys():
arg2 = arg.replace("__", ":")
arg2 = arg2.replace("_", "-")
- self.attributes[arg2]=args[arg]
- def addElement(self,SVGelement):
+ self.attributes[arg2] = args[arg]
+
+ def addElement(self, SVGelement):
"""adds an element to a SVGelement
SVGelement.addElement(SVGelement)
"""
self.elements.append(SVGelement)
- def toXml(self,level,f):
+ def toXml(self, level, f):
f.write('\t'*level)
f.write('<'+self.type)
for attkey in self.attributes.keys():
- f.write(' '+_escape(str(attkey))+'='+_quoteattr(str(self.attributes[attkey])))
+ f.write(' '+_escape(str(attkey))+'=' +
+ _quoteattr(str(self.attributes[attkey])))
if self.namespace:
- f.write(' xmlns="'+ _escape(str(self.namespace))+'" xmlns:xlink="http://www.w3.org/1999/xlink"')
+ f.write(' xmlns="' + _escape(str(self.namespace)) +
+ '" xmlns:xlink="http://www.w3.org/1999/xlink"')
if self.elements or self.text or self.cdata:
f.write('>')
if self.elements:
f.write('\n')
for element in self.elements:
- element.toXml(level+1,f)
+ element.toXml(level+1, f)
if self.cdata:
f.write('\n'+'\t'*(level+1)+'<![CDATA[')
for line in self.cdata.splitlines():
f.write('\n'+'\t'*(level+2)+line)
f.write('\n'+'\t'*(level+1)+']]>\n')
if self.text:
- if type(self.text)==type(''): #If the text is only text
+ if type(self.text) == type(''): # If the text is only text
f.write(_escape(str(self.text)))
- else: #If the text is a spannedtext class
+ else: # If the text is a spannedtext class
f.write(str(self.text))
if self.elements:
f.write('\t'*level+'</'+self.type+'>\n')
@@ -312,6 +345,7 @@ class SVGelement:
else:
f.write('/>\n')
+
class tspan(SVGelement):
"""ts=tspan(text='',**args)
@@ -323,19 +357,22 @@ class tspan(SVGelement):
st.addtspan(ts)
t=text(3,5,st)
"""
- def __init__(self,text=None,**args):
- SVGelement.__init__(self,'tspan',**args)
- if self.text<>None:
- self.text=text
+
+ def __init__(self, text=None, **args):
+ SVGelement.__init__(self, 'tspan', **args)
+ if self.text <> None:
+ self.text = text
+
def __repr__(self):
- s="<tspan"
- for key,value in self.attributes.items():
- s+= ' %s="%s"' % (key,value)
- s+='>'
- s+=self.text
- s+='</tspan>'
+ s = "<tspan"
+ for key, value in self.attributes.items():
+ s += ' %s="%s"' % (key, value)
+ s += '>'
+ s += self.text
+ s += '</tspan>'
return s
+
class tref(SVGelement):
"""tr=tref(link='',**args)
@@ -346,16 +383,19 @@ class tref(SVGelement):
st.addtref(tr)
t=text(3,5,st)
"""
- def __init__(self,link,**args):
- SVGelement.__init__(self,'tref',{'xlink:href':link},**args)
+
+ def __init__(self, link, **args):
+ SVGelement.__init__(self, 'tref', {'xlink:href': link}, **args)
+
def __repr__(self):
- s="<tref"
+ s = "<tref"
- for key,value in self.attributes.items():
- s+= ' %s="%s"' % (key,value)
- s+='/>'
+ for key, value in self.attributes.items():
+ s += ' %s="%s"' % (key, value)
+ s += '/>'
return s
+
class spannedtext:
"""st=spannedtext(textlist=[])
@@ -374,30 +414,37 @@ class spannedtext:
st.addtext('This text is not bold')
t=text(3,5,st)
"""
- def __init__(self,textlist=None):
- if textlist==None:
- self.textlist=[]
+
+ def __init__(self, textlist=None):
+ if textlist == None:
+ self.textlist = []
else:
- self.textlist=textlist
- def addtext(self,text=''):
+ self.textlist = textlist
+
+ def addtext(self, text=''):
self.textlist.append(text)
- def addtspan(self,tspan):
+
+ def addtspan(self, tspan):
self.textlist.append(tspan)
- def addtref(self,tref):
+
+ def addtref(self, tref):
self.textlist.append(tref)
+
def __repr__(self):
- s=""
+ s = ""
for element in self.textlist:
- s+=str(element)
+ s += str(element)
return s
+
class rect(SVGelement):
"""r=rect(width,height,x,y,fill,stroke,stroke_width,**args)
a rectangle is defined by a width and height and a xy pair
"""
- def __init__(self,x=None,y=None,width=None,height=None,fill=None,stroke=None,stroke_width=None,**args):
- if width==None or height==None:
+
+ def __init__(self, x=None, y=None, width=None, height=None, fill=None, stroke=None, stroke_width=None, **args):
+ if width == None or height == None:
raise ValueError, 'height is required'
raise ValueError, 'width is required'
if width!=None:
@@ -841,7 +888,7 @@ class animateTransform(SVGelement):
"""
def __init__(self,type=None,fr=None,to=None,dur=None,**args):
SVGelement.__init__(self,'animateTransform',{'attributeName':'transform'},**args)
- #As far as I know the attributeName is always transform
+ # As far as I know the attributeName is always transform
if type!=None:
self.attributes['type']=type
if fr!=None:
@@ -920,7 +967,7 @@ class drawing:
self.entity = entity
def setSVG(self,svg):
self.svg=svg
- #Voeg een element toe aan de grafiek toe.
+ # Voeg een element toe aan de grafiek toe.
if use_dom_implementation==0:
def toXml(self, filename='',compress=False):
import cStringIO
@@ -966,10 +1013,10 @@ class drawing:
doctype = implementation.createDocumentType('svg',"-//W3C//DTD SVG 1.0//EN""",'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd ')
global root
- #root is defined global so it can be used by the appender. Its also possible to use it as an arugument but
- #that is a bit messy.
+ # root is defined global so it can be used by the appender. Its also possible to use it as an arugument but
+ # that is a bit messy.
root=implementation.createDocument(None,None,doctype)
- #Create the xml document.
+ # Create the xml document.
global appender
def appender(element,elementroot):
"""This recursive function appends elements to an element and sets the attributes