reportlab/platypus/doctemplate.py
changeset 1502 125b52eb0a8e
parent 1440 243d35446390
child 1505 e45994cb76bb
--- a/reportlab/platypus/doctemplate.py	Sun Feb 03 20:16:22 2002 +0000
+++ b/reportlab/platypus/doctemplate.py	Sun Feb 03 21:25:57 2002 +0000
@@ -1,14 +1,14 @@
 #copyright ReportLab Inc. 2000
 #see license.txt for license details
 #history http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/reportlab/platypus/doctemplate.py?cvsroot=reportlab
-#$Header: /tmp/reportlab/reportlab/platypus/doctemplate.py,v 1.49 2001/11/26 21:49:01 andy_robinson Exp $
+#$Header: /tmp/reportlab/reportlab/platypus/doctemplate.py,v 1.50 2002/02/03 21:25:57 andy_robinson Exp $
 
-__version__=''' $Id: doctemplate.py,v 1.49 2001/11/26 21:49:01 andy_robinson Exp $ '''
+__version__=''' $Id: doctemplate.py,v 1.50 2002/02/03 21:25:57 andy_robinson Exp $ '''
 
 __doc__="""
 This module contains the core structure of platypus.
 
-Platypus constructs documents.	Document styles are determined by DocumentTemplates.
+Platypus constructs documents.  Document styles are determined by DocumentTemplates.
 
 Each DocumentTemplate contains one or more PageTemplates which defines the look of the
 pages of the document.
@@ -40,749 +40,759 @@
 
 
 def _doNothing(canvas, doc):
-	"Dummy callback for onPage"
-	pass
+    "Dummy callback for onPage"
+    pass
 
 
 class IndexingFlowable(Flowable):
-	"""Abstract interface definition for flowables which might
-	hold references to other pages or themselves be targets
-	of cross-references.  XRefStart, XRefDest, Table of Contents,
-	Indexes etc."""
-	def isIndexing(self):
-		return 1
+    """Abstract interface definition for flowables which might
+    hold references to other pages or themselves be targets
+    of cross-references.  XRefStart, XRefDest, Table of Contents,
+    Indexes etc."""
+    def isIndexing(self):
+        return 1
 
-	def isSatisfied(self):
-		return 1
+    def isSatisfied(self):
+        return 1
 
-	def notify(self, kind, stuff):
-		"""This will be called by the framework wherever 'stuff' happens.
-		'kind' will be a value that can be used to decide whether to
-		pay attention or not."""
-		pass
+    def notify(self, kind, stuff):
+        """This will be called by the framework wherever 'stuff' happens.
+        'kind' will be a value that can be used to decide whether to
+        pay attention or not."""
+        pass
 
-	def beforeBuild(self):
-		"""Called by multiBuild before it starts; use this to clear
-		old contents"""
-		pass
+    def beforeBuild(self):
+        """Called by multiBuild before it starts; use this to clear
+        old contents"""
+        pass
 
-	def afterBuild(self):
-		"""Called after build ends but before isSatisfied"""
-		pass
+    def afterBuild(self):
+        """Called after build ends but before isSatisfied"""
+        pass
 
 
 class ActionFlowable(Flowable):
-	'''This Flowable is never drawn, it can be used for data driven controls
-	   For example to change a page template (from one column to two, for example)
-	   use NextPageTemplate which creates an ActionFlowable.
-	'''
-	def __init__(self,action=()):
-		if type(action) not in (ListType, TupleType):
-			action = (action,)
-		self.action = tuple(action)
+    '''This Flowable is never drawn, it can be used for data driven controls
+       For example to change a page template (from one column to two, for example)
+       use NextPageTemplate which creates an ActionFlowable.
+    '''
+    def __init__(self,action=()):
+        if type(action) not in (ListType, TupleType):
+            action = (action,)
+        self.action = tuple(action)
 
-	def wrap(self, availWidth, availHeight):
-		'''Should never be called.'''
-		raise NotImplementedError
+    def wrap(self, availWidth, availHeight):
+        '''Should never be called.'''
+        raise NotImplementedError
 
-	def draw(self):
-		'''Should never be called.'''
-		raise NotImplementedError
+    def draw(self):
+        '''Should never be called.'''
+        raise NotImplementedError
 
-	def apply(self,doc):
-		'''
-		This is called by the doc.build processing to allow the instance to
-		implement its behaviour
-		'''
-		action = self.action[0]
-		args = tuple(self.action[1:])
-		arn = 'handle_'+action
-		try:
-			apply(getattr(doc,arn), args)
-		except AttributeError, aerr:
-			if aerr.args[0]==arn:
-				raise NotImplementedError, "Can't handle ActionFlowable(%s)" % action
-			else:
-				raise
-		except "bogus":
-			t, v, None = sys.exc_info()
-			raise t, "%s\n	 handle_%s args=%s"%(v,action,args)
+    def apply(self,doc):
+        '''
+        This is called by the doc.build processing to allow the instance to
+        implement its behaviour
+        '''
+        action = self.action[0]
+        args = tuple(self.action[1:])
+        arn = 'handle_'+action
+        try:
+            apply(getattr(doc,arn), args)
+        except AttributeError, aerr:
+            if aerr.args[0]==arn:
+                raise NotImplementedError, "Can't handle ActionFlowable(%s)" % action
+            else:
+                raise
+        except "bogus":
+            t, v, None = sys.exc_info()
+            raise t, "%s\n   handle_%s args=%s"%(v,action,args)
 
-	def __call__(self):
-		return self
+    def __call__(self):
+        return self
 
 class NextFrameFlowable(ActionFlowable):
-	def __init__(self,ix,resume=0):
-		ActionFlowable.__init__(self,('nextFrame',ix,resume))
+    def __init__(self,ix,resume=0):
+        ActionFlowable.__init__(self,('nextFrame',ix,resume))
 
 class CurrentFrameFlowable(ActionFlowable):
-	def __init__(self,ix,resume=0):
-		ActionFlowable.__init__(self,('currentFrame',ix,resume))
+    def __init__(self,ix,resume=0):
+        ActionFlowable.__init__(self,('currentFrame',ix,resume))
 
 class _FrameBreak(ActionFlowable):
-	'''
-	A special ActionFlowable that allows setting doc._nextFrameIndex
+    '''
+    A special ActionFlowable that allows setting doc._nextFrameIndex
 
-	eg story.append(FrameBreak('mySpecialFrame'))
-	'''
-	def __call__(self,ix=None,resume=0):
-		r = self.__class__(self.action+(resume,))
-		r._ix = ix
-		return r
+    eg story.append(FrameBreak('mySpecialFrame'))
+    '''
+    def __call__(self,ix=None,resume=0):
+        r = self.__class__(self.action+(resume,))
+        r._ix = ix
+        return r
 
-	def apply(self,doc):
-		if getattr(self,'_ix',None): doc._nextFrameIndex = self._ix
-		ActionFlowable.apply(self,doc)
+    def apply(self,doc):
+        if getattr(self,'_ix',None): doc._nextFrameIndex = self._ix
+        ActionFlowable.apply(self,doc)
 
 FrameBreak = _FrameBreak('frameEnd')
 PageBegin = ActionFlowable('pageBegin')
 
 
 class NextPageTemplate(ActionFlowable):
-	"""When you get to the next page, use the template specified (change to two column, for example)  """
-	def __init__(self,pt):
-		ActionFlowable.__init__(self,('nextPageTemplate',pt))
+    """When you get to the next page, use the template specified (change to two column, for example)  """
+    def __init__(self,pt):
+        ActionFlowable.__init__(self,('nextPageTemplate',pt))
 
 
 class PageTemplate:
-	"""
-	essentially a list of Frames and an onPage routine to call at the start
-	of a page when this is selected. onPageEnd gets called at the end.
-	derived classes can also implement beforeDrawPage and afterDrawPage if they want
-	"""
-	def __init__(self,id=None,frames=[],onPage=_doNothing, onPageEnd=_doNothing,
-				 pagesize=defaultPageSize):
-		if type(frames) not in (ListType,TupleType): frames = [frames]
-		assert filter(lambda x: not isinstance(x,Frame), frames)==[], "frames argument error"
-		self.id = id
-		self.frames = frames
-		self.onPage = onPage
-		self.onPageEnd = onPageEnd
-		self.pagesize = pagesize
+    """
+    essentially a list of Frames and an onPage routine to call at the start
+    of a page when this is selected. onPageEnd gets called at the end.
+    derived classes can also implement beforeDrawPage and afterDrawPage if they want
+    """
+    def __init__(self,id=None,frames=[],onPage=_doNothing, onPageEnd=_doNothing,
+                 pagesize=defaultPageSize):
+        if type(frames) not in (ListType,TupleType): frames = [frames]
+        assert filter(lambda x: not isinstance(x,Frame), frames)==[], "frames argument error"
+        self.id = id
+        self.frames = frames
+        self.onPage = onPage
+        self.onPageEnd = onPageEnd
+        self.pagesize = pagesize
 
-	def beforeDrawPage(self,canv,doc):
-		"""Override this if you want additional functionality or prefer
-		a class based page routine.  Called before any flowables for
-		this page are processed."""
-		pass
+    def beforeDrawPage(self,canv,doc):
+        """Override this if you want additional functionality or prefer
+        a class based page routine.  Called before any flowables for
+        this page are processed."""
+        pass
 
-	def checkPageSize(self,canv,doc):
-		'''This gets called by the template framework
-		If canv size != doc size then the canv size is set to
-		the template size or if that's not available to the
-		doc size.
-		'''
-		#### NEVER EVER EVER COMPARE FLOATS FOR EQUALITY
-		#RGB converting pagesizes to ints means we are accurate to one point
-		#RGB I suggest we should be aiming a little better
-		cp = None
-		dp = None
-		sp = None
-		if canv._pagesize: cp = map(int, canv._pagesize)
-		if self.pagesize: sp = map(int, self.pagesize)
-		if doc.pagesize: dp = map(int, doc.pagesize)
-		if cp!=sp:
-			if sp:
-				canv.setPageSize(self.pagesize)
-			elif cp!=dp:
-				canv.setPageSize(doc.pagesize)
+    def checkPageSize(self,canv,doc):
+        '''This gets called by the template framework
+        If canv size != doc size then the canv size is set to
+        the template size or if that's not available to the
+        doc size.
+        '''
+        #### NEVER EVER EVER COMPARE FLOATS FOR EQUALITY
+        #RGB converting pagesizes to ints means we are accurate to one point
+        #RGB I suggest we should be aiming a little better
+        cp = None
+        dp = None
+        sp = None
+        if canv._pagesize: cp = map(int, canv._pagesize)
+        if self.pagesize: sp = map(int, self.pagesize)
+        if doc.pagesize: dp = map(int, doc.pagesize)
+        if cp!=sp:
+            if sp:
+                canv.setPageSize(self.pagesize)
+            elif cp!=dp:
+                canv.setPageSize(doc.pagesize)
 
-	def afterDrawPage(self, canv, doc):
-		"""This is called after the last flowable for the page has
-		been processed.  You might use this if the page header or
-		footer needed knowledge of what flowables were drawn on
-		this page."""
-		pass
+    def afterDrawPage(self, canv, doc):
+        """This is called after the last flowable for the page has
+        been processed.  You might use this if the page header or
+        footer needed knowledge of what flowables were drawn on
+        this page."""
+        pass
 
 
 class BaseDocTemplate:
-	"""
-	First attempt at defining a document template class.
+    """
+    First attempt at defining a document template class.
 
-	The basic idea is simple.
-	0)	The document has a list of data associated with it
-		this data should derive from flowables. We'll have
-		special classes like PageBreak, FrameBreak to do things
-		like forcing a page end etc.
+    The basic idea is simple.
+    0)  The document has a list of data associated with it
+        this data should derive from flowables. We'll have
+        special classes like PageBreak, FrameBreak to do things
+        like forcing a page end etc.
 
-	1)	The document has one or more page templates.
+    1)  The document has one or more page templates.
 
-	2)	Each page template has one or more frames.
+    2)  Each page template has one or more frames.
 
-	3)	The document class provides base methods for handling the
-		story events and some reasonable methods for getting the
-		story flowables into the frames.
+    3)  The document class provides base methods for handling the
+        story events and some reasonable methods for getting the
+        story flowables into the frames.
 
-	4)	The document instances can override the base handler routines.
+    4)  The document instances can override the base handler routines.
 
-	Most of the methods for this class are not called directly by the user,
-	but in some advanced usages they may need to be overridden via subclassing.
+    Most of the methods for this class are not called directly by the user,
+    but in some advanced usages they may need to be overridden via subclassing.
 
-	EXCEPTION: doctemplate.build(...) must be called for most reasonable uses
-	since it builds a document using the page template.
+    EXCEPTION: doctemplate.build(...) must be called for most reasonable uses
+    since it builds a document using the page template.
 
-	Each document template builds exactly one document into a file specified
-	by the filename argument on initialization.
+    Each document template builds exactly one document into a file specified
+    by the filename argument on initialization.
 
-	Possible keyword arguments for the initialization:
+    Possible keyword arguments for the initialization:
 
-	pageTemplates: A list of templates.  Must be nonempty.	Names
-	  assigned to the templates are used for referring to them so no two used
-	  templates should have the same name.	For example you might want one template
-	  for a title page, one for a section first page, one for a first page of
-	  a chapter and two more for the interior of a chapter on odd and even pages.
-	  If this argument is omitted then at least one pageTemplate should be provided
-	  using the addPageTemplates method before the document is built.
-	showBoundary: if set draw a box around the frame boundaries.
-	leftMargin:
-	rightMargin:
-	topMargin:
-	bottomMargin:  Margin sizes in points (default 1 inch)
-	  These margins may be overridden by the pageTemplates.  They are primarily of interest
-	  for the SimpleDocumentTemplate subclass.
-	allowSplitting:  If set flowables (eg, paragraphs) may be split across frames or pages
-	  (default: 1)
-	title: Internal title for document (does not automatically display on any page)
-	author: Internal author for document (does not automatically display on any page)
-	"""
-	_initArgs = {	'pagesize':defaultPageSize,
-					'pageTemplates':[],
-					'showBoundary':0,
-					'leftMargin':inch,
-					'rightMargin':inch,
-					'topMargin':inch,
-					'bottomMargin':inch,
-					'allowSplitting':1,
-					'title':None,
-					'author':None,
-					'_pageBreakQuick':1}
-	_invalidInitArgs = ()
+    pageTemplates: A list of templates.  Must be nonempty.  Names
+      assigned to the templates are used for referring to them so no two used
+      templates should have the same name.  For example you might want one template
+      for a title page, one for a section first page, one for a first page of
+      a chapter and two more for the interior of a chapter on odd and even pages.
+      If this argument is omitted then at least one pageTemplate should be provided
+      using the addPageTemplates method before the document is built.
+    showBoundary: if set draw a box around the frame boundaries.
+    leftMargin:
+    rightMargin:
+    topMargin:
+    bottomMargin:  Margin sizes in points (default 1 inch)
+      These margins may be overridden by the pageTemplates.  They are primarily of interest
+      for the SimpleDocumentTemplate subclass.
+    allowSplitting:  If set flowables (eg, paragraphs) may be split across frames or pages
+      (default: 1)
+    title: Internal title for document (does not automatically display on any page)
+    author: Internal author for document (does not automatically display on any page)
+    """
+    _initArgs = {   'pagesize':defaultPageSize,
+                    'pageTemplates':[],
+                    'showBoundary':0,
+                    'leftMargin':inch,
+                    'rightMargin':inch,
+                    'topMargin':inch,
+                    'bottomMargin':inch,
+                    'allowSplitting':1,
+                    'title':None,
+                    'author':None,
+                    '_pageBreakQuick':1}
+    _invalidInitArgs = ()
 
-	def __init__(self, filename, **kw):
-		"""create a document template bound to a filename (see class documentation for keyword arguments)"""
-		self.filename = filename
-
-		for k in self._initArgs.keys():
-			if not kw.has_key(k):
-				v = self._initArgs[k]
-			else:
-				if k in self._invalidInitArgs:
-					raise ValueError, "Invalid argument %s" % k
-				v = kw[k]
-			setattr(self,k,v)
-		#print "pagesize is", self.pagesize
+    def __init__(self, filename, **kw):
+        """create a document template bound to a filename (see class documentation for keyword arguments)"""
+        self.filename = filename
 
-		p = self.pageTemplates
-		self.pageTemplates = []
-		self.addPageTemplates(p)
+        for k in self._initArgs.keys():
+            if not kw.has_key(k):
+                v = self._initArgs[k]
+            else:
+                if k in self._invalidInitArgs:
+                    raise ValueError, "Invalid argument %s" % k
+                v = kw[k]
+            setattr(self,k,v)
+        #print "pagesize is", self.pagesize
 
-		# facility to assist multi-build and cross-referencing.
-		# various hooks can put things into here - key is what
-		# you want, value is a page number.  This can then be
-		# passed to indexing flowables.
-		self._pageRefs = {}
-		self._indexingFlowables = []
+        p = self.pageTemplates
+        self.pageTemplates = []
+        self.addPageTemplates(p)
 
-		self._calc()
-		self.afterInit()
-
-	def _calc(self):
-		self._rightMargin = self.pagesize[0] - self.rightMargin
-		self._topMargin = self.pagesize[1] - self.topMargin
-		self.width = self._rightMargin - self.leftMargin
-		self.height = self._topMargin - self.bottomMargin
+        # facility to assist multi-build and cross-referencing.
+        # various hooks can put things into here - key is what
+        # you want, value is a page number.  This can then be
+        # passed to indexing flowables.
+        self._pageRefs = {}
+        self._indexingFlowables = []
 
 
-	def clean_hanging(self):
-		'handle internal postponed actions'
-		while len(self._hanging):
-			self.handle_flowable(self._hanging)
+        #callback facility
+        self._onPage = None
+        self._calc()
+        self.afterInit()
+
+    def _calc(self):
+        self._rightMargin = self.pagesize[0] - self.rightMargin
+        self._topMargin = self.pagesize[1] - self.topMargin
+        self.width = self._rightMargin - self.leftMargin
+        self.height = self._topMargin - self.bottomMargin
+
+    def setPageCallBack(self, func):
+        'Progress monitor - func(pageNo) called on each new page'
+        self._onPage = func
 
-	def addPageTemplates(self,pageTemplates):
-		'add one or a sequence of pageTemplates'
-		if type(pageTemplates) not in (ListType,TupleType):
-			pageTemplates = [pageTemplates]
-		#this test below fails due to inconsistent imports!
-		#assert filter(lambda x: not isinstance(x,PageTemplate), pageTemplates)==[], "pageTemplates argument error"
-		for t in pageTemplates:
-			self.pageTemplates.append(t)
+    def clean_hanging(self):
+        'handle internal postponed actions'
+        while len(self._hanging):
+            self.handle_flowable(self._hanging)
 
-	def handle_documentBegin(self):
-		'''implement actions at beginning of document'''
-		self._hanging = [PageBegin]
-		self.pageTemplate = self.pageTemplates[0]
-		self.page = 0
-		self.beforeDocument()
+    def addPageTemplates(self,pageTemplates):
+        'add one or a sequence of pageTemplates'
+        if type(pageTemplates) not in (ListType,TupleType):
+            pageTemplates = [pageTemplates]
+        #this test below fails due to inconsistent imports!
+        #assert filter(lambda x: not isinstance(x,PageTemplate), pageTemplates)==[], "pageTemplates argument error"
+        for t in pageTemplates:
+            self.pageTemplates.append(t)
+
+    def handle_documentBegin(self):
+        '''implement actions at beginning of document'''
+        self._hanging = [PageBegin]
+        self.pageTemplate = self.pageTemplates[0]
+        self.page = 0
+        self.beforeDocument()
 
-	def handle_pageBegin(self):
-		'''Perform actions required at beginning of page.
-		shouldn't normally be called directly'''
-		self.page = self.page + 1
-		self.pageTemplate.beforeDrawPage(self.canv,self)
-		self.pageTemplate.checkPageSize(self.canv,self)
-		self.pageTemplate.onPage(self.canv,self)
-		for f in self.pageTemplate.frames: f._reset()
-		self.beforePage()
-		if hasattr(self,'_nextFrameIndex'):
-			del self._nextFrameIndex
-		self.frame = self.pageTemplate.frames[0]
-		self.handle_frameBegin()
+    def handle_pageBegin(self):
+        '''Perform actions required at beginning of page.
+        shouldn't normally be called directly'''
+        self.page = self.page + 1
+        self.pageTemplate.beforeDrawPage(self.canv,self)
+        self.pageTemplate.checkPageSize(self.canv,self)
+        self.pageTemplate.onPage(self.canv,self)
+        for f in self.pageTemplate.frames: f._reset()
+        self.beforePage()
+        if hasattr(self,'_nextFrameIndex'):
+            del self._nextFrameIndex
+        self.frame = self.pageTemplate.frames[0]
+        self.handle_frameBegin()
 
-	def handle_pageEnd(self):
-		''' show the current page
-			check the next page template
-			hang a page begin
-		'''
-		self.pageTemplate.afterDrawPage(self.canv, self)
-		self.pageTemplate.onPageEnd(self.canv, self)
-		self.afterPage()
-		self.canv.showPage()
-		if hasattr(self,'_nextPageTemplateIndex'):
-			self.pageTemplate = self.pageTemplates[self._nextPageTemplateIndex]
-			del self._nextPageTemplateIndex
-		self._hanging.append(PageBegin)
+    def handle_pageEnd(self):
+        ''' show the current page
+            check the next page template
+            hang a page begin
+        '''
+        self.pageTemplate.afterDrawPage(self.canv, self)
+        self.pageTemplate.onPageEnd(self.canv, self)
+        self.afterPage()
+        self.canv.showPage()
+        if hasattr(self,'_nextPageTemplateIndex'):
+            self.pageTemplate = self.pageTemplates[self._nextPageTemplateIndex]
+            del self._nextPageTemplateIndex
+        self._hanging.append(PageBegin)
 
-	def handle_pageBreak(self):
-		'''some might choose not to end all the frames'''
-		if self._pageBreakQuick:
-			self.handle_pageEnd()
-		else:
-			n = len(self._hanging)
-			while len(self._hanging)==n:
-				self.handle_frameEnd()
+    def handle_pageBreak(self):
+        '''some might choose not to end all the frames'''
+        if self._pageBreakQuick:
+            self.handle_pageEnd()
+        else:
+            n = len(self._hanging)
+            while len(self._hanging)==n:
+                self.handle_frameEnd()
 
-	def handle_frameBegin(self,resume=0):
-		'''What to do at the beginning of a frame'''
-		f = self.frame
-		if f._atTop:
-			if self.showBoundary or self.frame.showBoundary:
-				self.frame.drawBoundary(self.canv)
+    def handle_frameBegin(self,resume=0):
+        '''What to do at the beginning of a frame'''
+        f = self.frame
+        if f._atTop:
+            if self.showBoundary or self.frame.showBoundary:
+                self.frame.drawBoundary(self.canv)
 
-	def handle_frameEnd(self,resume=0):
-		''' Handles the semantics of the end of a frame. This includes the selection of
-			the next frame or if this is the last frame then invoke pageEnd.
-		'''
-		if hasattr(self,'_nextFrameIndex'):
-			frame = self.pageTemplate.frames[self._nextFrameIndex]
-			del self._nextFrameIndex
-			self.handle_frameBegin(resume)
-		elif hasattr(self.frame,'lastFrame') or self.frame is self.pageTemplate.frames[-1]:
-			self.handle_pageEnd()
-			self.frame = None
-		else:
-			f = self.frame
-			self.frame = self.pageTemplate.frames[self.pageTemplate.frames.index(f) + 1]
-			self.handle_frameBegin()
+    def handle_frameEnd(self,resume=0):
+        ''' Handles the semantics of the end of a frame. This includes the selection of
+            the next frame or if this is the last frame then invoke pageEnd.
+        '''
+        if hasattr(self,'_nextFrameIndex'):
+            frame = self.pageTemplate.frames[self._nextFrameIndex]
+            del self._nextFrameIndex
+            self.handle_frameBegin(resume)
+        elif hasattr(self.frame,'lastFrame') or self.frame is self.pageTemplate.frames[-1]:
+            self.handle_pageEnd()
+            self.frame = None
+        else:
+            f = self.frame
+            self.frame = self.pageTemplate.frames[self.pageTemplate.frames.index(f) + 1]
+            self.handle_frameBegin()
 
-	def handle_nextPageTemplate(self,pt):
-		'''On endPage chenge to the page template with name or index pt'''
-		if type(pt) is StringType:
-			for t in self.pageTemplates:
-				if t.id == pt:
-					self._nextPageTemplateIndex = self.pageTemplates.index(t)
-					return
-			raise ValueError, "can't find template('%s')"%pt
-		elif type(pt) is IntType:
-			self._nextPageTemplateIndex = pt
-		else:
-			raise TypeError, "argument pt should be string or integer"
+    def handle_nextPageTemplate(self,pt):
+        '''On endPage chenge to the page template with name or index pt'''
+        if type(pt) is StringType:
+            for t in self.pageTemplates:
+                if t.id == pt:
+                    self._nextPageTemplateIndex = self.pageTemplates.index(t)
+                    return
+            raise ValueError, "can't find template('%s')"%pt
+        elif type(pt) is IntType:
+            self._nextPageTemplateIndex = pt
+        else:
+            raise TypeError, "argument pt should be string or integer"
 
-	def handle_nextFrame(self,fx):
-		'''On endFrame chenge to the frame with name or index fx'''
-		if type(fx) is StringType:
-			for f in self.pageTemplate.frames:
-				if f.id == fx:
-					self._nextFrameIndex = self.pageTemplate.frames.index(f)
-					return
-			raise ValueError, "can't find frame('%s')"%fx
-		elif type(fx) is IntType:
-			self._nextFrameIndex = fx
-		else:
-			raise TypeError, "argument fx should be string or integer"
+    def handle_nextFrame(self,fx):
+        '''On endFrame chenge to the frame with name or index fx'''
+        if type(fx) is StringType:
+            for f in self.pageTemplate.frames:
+                if f.id == fx:
+                    self._nextFrameIndex = self.pageTemplate.frames.index(f)
+                    return
+            raise ValueError, "can't find frame('%s')"%fx
+        elif type(fx) is IntType:
+            self._nextFrameIndex = fx
+        else:
+            raise TypeError, "argument fx should be string or integer"
 
-	def handle_currentFrame(self,fx):
-		'''chenge to the frame with name or index fx'''
-		if type(fx) is StringType:
-			for f in self.pageTemplate.frames:
-				if f.id == fx:
-					self._nextFrameIndex = self.pageTemplate.frames.index(f)
-					return
-			raise ValueError, "can't find frame('%s')"%fx
-		elif type(fx) is IntType:
-			self._nextFrameIndex = fx
-		else:
-			raise TypeError, "argument fx should be string or integer"
+    def handle_currentFrame(self,fx):
+        '''chenge to the frame with name or index fx'''
+        if type(fx) is StringType:
+            for f in self.pageTemplate.frames:
+                if f.id == fx:
+                    self._nextFrameIndex = self.pageTemplate.frames.index(f)
+                    return
+            raise ValueError, "can't find frame('%s')"%fx
+        elif type(fx) is IntType:
+            self._nextFrameIndex = fx
+        else:
+            raise TypeError, "argument fx should be string or integer"
 
-	def handle_breakBefore(self, flowables):
-		'''preprocessing step to allow pageBreakBefore and frameBreakBefore attributes'''
-		first = flowables[0]
-		# if we insert a page break before, we'll process that, see it again,
-		# and go in an infinite loop.  So we need to set a flag on the object
-		# saying 'skip me'.  This should be unset on the next pass
-		if hasattr(first, '_skipMeNextTime'):
-			delattr(first, '_skipMeNextTime')
-			return
-		# this could all be made much quicker by putting the attributes
-		# in to the flowables with a defult value of 0
-		if hasattr(first,'pageBreakBefore') and first.pageBreakBefore == 1:
-			first._skipMeNextTime = 1
-			first.insert(0, PageBreak())
-			return
-		if hasattr(first,'style') and hasattr(first.style, 'pageBreakBefore') and first.style.pageBreakBefore == 1:
-			first._skipMeNextTime = 1
-			flowables.insert(0, PageBreak())
-			return
-		if hasattr(first,'frameBreakBefore') and first.frameBreakBefore == 1:
-			first._skipMeNextTime = 1
-			flowables.insert(0, FrameBreak())
-			return
-		if hasattr(first,'style') and hasattr(first.style, 'frameBreakBefore') and first.style.frameBreakBefore == 1:
-			first._skipMeNextTime = 1
-			flowables.insert(0, FrameBreak())
-			return
+    def handle_breakBefore(self, flowables):
+        '''preprocessing step to allow pageBreakBefore and frameBreakBefore attributes'''
+        first = flowables[0]
+        # if we insert a page break before, we'll process that, see it again,
+        # and go in an infinite loop.  So we need to set a flag on the object
+        # saying 'skip me'.  This should be unset on the next pass
+        if hasattr(first, '_skipMeNextTime'):
+            delattr(first, '_skipMeNextTime')
+            return
+        # this could all be made much quicker by putting the attributes
+        # in to the flowables with a defult value of 0
+        if hasattr(first,'pageBreakBefore') and first.pageBreakBefore == 1:
+            first._skipMeNextTime = 1
+            first.insert(0, PageBreak())
+            return
+        if hasattr(first,'style') and hasattr(first.style, 'pageBreakBefore') and first.style.pageBreakBefore == 1:
+            first._skipMeNextTime = 1
+            flowables.insert(0, PageBreak())
+            return
+        if hasattr(first,'frameBreakBefore') and first.frameBreakBefore == 1:
+            first._skipMeNextTime = 1
+            flowables.insert(0, FrameBreak())
+            return
+        if hasattr(first,'style') and hasattr(first.style, 'frameBreakBefore') and first.style.frameBreakBefore == 1:
+            first._skipMeNextTime = 1
+            flowables.insert(0, FrameBreak())
+            return
 
 
-	def handle_keepWithNext(self, flowables):
-		"implements keepWithNext"
-		i = 0
-		n = len(flowables)
-		while i<n and flowables[i].getKeepWithNext(): i = i + 1
-		if i:
-			i = i + 1
-			K = KeepTogether(flowables[:i])
-			for f in K._flowables:
-				f.keepWithNext = 0
-			del flowables[:i]
-			flowables.insert(0,K)
+    def handle_keepWithNext(self, flowables):
+        "implements keepWithNext"
+        i = 0
+        n = len(flowables)
+        while i<n and flowables[i].getKeepWithNext(): i = i + 1
+        if i:
+            i = i + 1
+            K = KeepTogether(flowables[:i])
+            for f in K._flowables:
+                f.keepWithNext = 0
+            del flowables[:i]
+            flowables.insert(0,K)
 
-	def handle_flowable(self,flowables):
-		'''try to handle one flowable from the front of list flowables.'''
+    def handle_flowable(self,flowables):
+        '''try to handle one flowable from the front of list flowables.'''
 
-		#allow document a chance to look at, modify or ignore
-		#the object(s) about to be processed
-		self.filterFlowables(flowables)
+        #allow document a chance to look at, modify or ignore
+        #the object(s) about to be processed
+        self.filterFlowables(flowables)
 
-		self.handle_breakBefore(flowables)
-		self.handle_keepWithNext(flowables)
-		f = flowables[0]
-		del flowables[0]
-		if f is None:
-			return
+        self.handle_breakBefore(flowables)
+        self.handle_keepWithNext(flowables)
+        f = flowables[0]
+        del flowables[0]
+        if f is None:
+            return
 
-		if isinstance(f,PageBreak):
-			self.handle_pageBreak()
-			self.afterFlowable(f)
-		elif isinstance(f,ActionFlowable):
-			f.apply(self)
-			self.afterFlowable(f)
-		else:
-			#try to fit it then draw it
-			if self.frame.add(f, self.canv, trySplit=self.allowSplitting):
-				self.afterFlowable(f)
-			else:
-				#if isinstance(f, KeepTogether): print 'could not add it to frame'
-				if self.allowSplitting:
-					# see if this is a splittable thing
-					S = self.frame.split(f,self.canv)
-					n = len(S)
-				else:
-					n = 0
-				#if isinstance(f, KeepTogether): print 'n=%d' % n
-				if n:
-					if self.frame.add(S[0], self.canv, trySplit=0):
-						self.afterFlowable(S[0])
-					else:
-						print 'n = %d' % n
-						raise "LayoutError", "splitting error on page %d in\n%s" % (self.page,f.identity(30))
-					del S[0]
-					for f in xrange(n-1):
-						flowables.insert(f,S[f])	# put split flowables back on the list
-				else:
-					# this must be cleared when they are finally drawn!
-##					if hasattr(f,'postponed'):
-					if hasattr(f,'_postponed'):
-						message = "Flowable %s too large on page %d" % (f.identity(30), self.page)
-						#show us, it might be handy
-						#HACK = it seems within tables we sometimes
-						#get an empty paragraph that won't fit and this
-						#causes it to fall over.  FIXME FIXME FIXME
-						raise "LayoutError", message
-##					f.postponed = 1
-					f._postponed = 1
-					flowables.insert(0,f)			# put the flowable back
-					self.handle_frameEnd()
+        if isinstance(f,PageBreak):
+            self.handle_pageBreak()
+            self.afterFlowable(f)
+        elif isinstance(f,ActionFlowable):
+            f.apply(self)
+            self.afterFlowable(f)
+        else:
+            #try to fit it then draw it
+            if self.frame.add(f, self.canv, trySplit=self.allowSplitting):
+                self.afterFlowable(f)
+            else:
+                #if isinstance(f, KeepTogether): print 'could not add it to frame'
+                if self.allowSplitting:
+                    # see if this is a splittable thing
+                    S = self.frame.split(f,self.canv)
+                    n = len(S)
+                else:
+                    n = 0
+                #if isinstance(f, KeepTogether): print 'n=%d' % n
+                if n:
+                    if self.frame.add(S[0], self.canv, trySplit=0):
+                        self.afterFlowable(S[0])
+                    else:
+                        print 'n = %d' % n
+                        raise "LayoutError", "splitting error on page %d in\n%s" % (self.page,f.identity(30))
+                    del S[0]
+                    for f in xrange(n-1):
+                        flowables.insert(f,S[f])    # put split flowables back on the list
+                else:
+                    # this must be cleared when they are finally drawn!
+##                  if hasattr(f,'postponed'):
+                    if hasattr(f,'_postponed'):
+                        message = "Flowable %s too large on page %d" % (f.identity(30), self.page)
+                        #show us, it might be handy
+                        #HACK = it seems within tables we sometimes
+                        #get an empty paragraph that won't fit and this
+                        #causes it to fall over.  FIXME FIXME FIXME
+                        raise "LayoutError", message
+##                  f.postponed = 1
+                    f._postponed = 1
+                    flowables.insert(0,f)           # put the flowable back
+                    self.handle_frameEnd()
 
-	#these are provided so that deriving classes can refer to them
-	_handle_documentBegin = handle_documentBegin
-	_handle_pageBegin = handle_pageBegin
-	_handle_pageEnd = handle_pageEnd
-	_handle_frameBegin = handle_frameBegin
-	_handle_frameEnd = handle_frameEnd
-	_handle_flowable = handle_flowable
-	_handle_nextPageTemplate = handle_nextPageTemplate
-	_handle_currentFrame = handle_currentFrame
-	_handle_nextFrame = handle_nextFrame
-
-	def _startBuild(self, filename=None, canvasmaker=canvas.Canvas):
-		self._calc()
-		self.canv = canvasmaker(filename or self.filename,pagesize=self.pagesize)
-		self.handle_documentBegin()
+    #these are provided so that deriving classes can refer to them
+    _handle_documentBegin = handle_documentBegin
+    _handle_pageBegin = handle_pageBegin
+    _handle_pageEnd = handle_pageEnd
+    _handle_frameBegin = handle_frameBegin
+    _handle_frameEnd = handle_frameEnd
+    _handle_flowable = handle_flowable
+    _handle_nextPageTemplate = handle_nextPageTemplate
+    _handle_currentFrame = handle_currentFrame
+    _handle_nextFrame = handle_nextFrame
 
-	def _endBuild(self):
-		if self._hanging!=[] and self._hanging[-1] is PageBegin:
-			del self._hanging[-1]
-			self.clean_hanging()
-		else:
-			self.clean_hanging()
-			self.handle_pageBreak()
+    def _startBuild(self, filename=None, canvasmaker=canvas.Canvas):
+        self._calc()
+        self.canv = canvasmaker(filename or self.filename,pagesize=self.pagesize)
+        if self._onPage:
+            self.canv.setPageCallBack(self._onPage)
+        self.handle_documentBegin()
 
-		self.canv.save()
-		#AR - hack - for some reason a document did not
-		#have these:
-		#if hasattr(self, 'frame'): del self.frame
-		#if hasattr(self, 'pageTemplate'): del self.pageTemplate
-		#del self.frame, self.pageTemplate
+    def _endBuild(self):
+        if self._hanging!=[] and self._hanging[-1] is PageBegin:
+            del self._hanging[-1]
+            self.clean_hanging()
+        else:
+            self.clean_hanging()
+            self.handle_pageBreak()
 
-	def build(self, flowables, filename=None, canvasmaker=canvas.Canvas):
-		"""Build the document from a list of flowables.
-		   If the filename argument is provided then that filename is used
-		   rather than the one provided upon initialization.
-		   If the canvasmaker argument is provided then it will be used
-		   instead of the default.	For example a slideshow might use
-		   an alternate canvas which places 6 slides on a page (by
-		   doing translations, scalings and redefining the page break
-		   operations).
-		"""
-		#assert filter(lambda x: not isinstance(x,Flowable), flowables)==[], "flowables argument error"
-		self._startBuild(filename,canvasmaker)
+        self.canv.save()
+        if self._onPage:
+            self.canv.setPageCallBack(None)
+        #AR - hack - for some reason a document did not
+        #have these:
+        #if hasattr(self, 'frame'): del self.frame
+        #if hasattr(self, 'pageTemplate'): del self.pageTemplate
+        #del self.frame, self.pageTemplate
 
-		while len(flowables):
-			self.clean_hanging()
-			self.handle_flowable(flowables)
-
-		self._endBuild()
+    def build(self, flowables, filename=None, canvasmaker=canvas.Canvas):
+        """Build the document from a list of flowables.
+           If the filename argument is provided then that filename is used
+           rather than the one provided upon initialization.
+           If the canvasmaker argument is provided then it will be used
+           instead of the default.  For example a slideshow might use
+           an alternate canvas which places 6 slides on a page (by
+           doing translations, scalings and redefining the page break
+           operations).
+        """
+        #assert filter(lambda x: not isinstance(x,Flowable), flowables)==[], "flowables argument error"
+        self._startBuild(filename,canvasmaker)
 
-	def _allSatisfied(self):
-		"""Called by multi-build - are all cross-references resolved?"""
-		allHappy = 1
-		for f in self._indexingFlowables:
-			if not f.isSatisfied():
-				allHappy = 0
-				break
-		return allHappy
+        while len(flowables):
+            self.clean_hanging()
+            self.handle_flowable(flowables)
+
+        self._endBuild()
 
-	def notify(self, kind, stuff):
-		""""Forward to any listeners"""
-		for l in self._indexingFlowables:
-			l.notify(kind, stuff)
-
-	def pageRef(self, label):
-		"""hook to register a page number"""
-		if _verbose: print "pageRef called with label '%s' on page %d" % (
-			label, self.page)
-		self._pageRefs[label] = self.page
+    def _allSatisfied(self):
+        """Called by multi-build - are all cross-references resolved?"""
+        allHappy = 1
+        for f in self._indexingFlowables:
+            if not f.isSatisfied():
+                allHappy = 0
+                break
+        return allHappy
 
-	def multiBuild(self, story,
-				   filename=None,
-				   canvasmaker=canvas.Canvas,
-				   maxPasses = 10):
-		"""Makes multiple passes until all indexing flowables
-		are happy."""
-		self._indexingFlowables = []
-		#scan the story and keep a copy
-		for thing in story:
-			if thing.isIndexing():
-				self._indexingFlowables.append(thing)
-		#print 'scanned story, found these indexing flowables:\n'
-		#print self._indexingFlowables
-		
-		passes = 0
-		while 1:
-			passes = passes + 1
-			if _verbose: print 'building pass '+str(passes) + '...',
+    def notify(self, kind, stuff):
+        """"Forward to any listeners"""
+        for l in self._indexingFlowables:
+            l.notify(kind, stuff)
+
+    def pageRef(self, label):
+        """hook to register a page number"""
+        if _verbose: print "pageRef called with label '%s' on page %d" % (
+            label, self.page)
+        self._pageRefs[label] = self.page
 
-			for fl in self._indexingFlowables:
-				fl.beforeBuild()
+    def multiBuild(self, story,
+                   filename=None,
+                   canvasmaker=canvas.Canvas,
+                   maxPasses = 10):
+        """Makes multiple passes until all indexing flowables
+        are happy."""
+        self._indexingFlowables = []
+        #scan the story and keep a copy
+        for thing in story:
+            if thing.isIndexing():
+                self._indexingFlowables.append(thing)
+        #print 'scanned story, found these indexing flowables:\n'
+        #print self._indexingFlowables
+        
+        passes = 0
+        while 1:
+            passes = passes + 1
+            if _verbose: print 'building pass '+str(passes) + '...',
 
-			# work with a copy of the story, since it is consumed
-			tempStory = story[:]
-			self.build(tempStory, filename, canvasmaker)
-			#self.notify('debug',None)
+            for fl in self._indexingFlowables:
+                fl.beforeBuild()
 
-			#clean up so multi-build does not go wrong - the frame
-			#packer might have tacked an attribute onto some
-			#paragraphs
-			for elem in story:
-##				if hasattr(elem, 'postponed'):
-##					del elem.postponed
-				if hasattr(elem, '_postponed'):
-					del elem._postponed
+            # work with a copy of the story, since it is consumed
+            tempStory = story[:]
+            self.build(tempStory, filename, canvasmaker)
+            #self.notify('debug',None)
 
-			for fl in self._indexingFlowables:
-				fl.afterBuild()
+            #clean up so multi-build does not go wrong - the frame
+            #packer might have tacked an attribute onto some
+            #paragraphs
+            for elem in story:
+##              if hasattr(elem, 'postponed'):
+##                  del elem.postponed
+                if hasattr(elem, '_postponed'):
+                    del elem._postponed
 
-			happy = self._allSatisfied()
+            for fl in self._indexingFlowables:
+                fl.afterBuild()
+
+            happy = self._allSatisfied()
 
-			if happy:
-				## print 'OK'
-				break
-			## else:
-				## print 'failed'
-			if passes > maxPasses:
-				raise IndexError, "Index entries not resolved after %d passes" % maxPasses
+            if happy:
+                ## print 'OK'
+                break
+            ## else:
+                ## print 'failed'
+            if passes > maxPasses:
+                raise IndexError, "Index entries not resolved after %d passes" % maxPasses
 
-		if _verbose: print 'saved'
+        if _verbose: print 'saved'
 
-	#these are pure virtuals override in derived classes
-	#NB these get called at suitable places by the base class
-	#so if you derive and override the handle_xxx methods
-	#it's up to you to ensure that they maintain the needed consistency
-	def afterInit(self):
-		"""This is called after initialisation of the base class."""
-		pass
+    #these are pure virtuals override in derived classes
+    #NB these get called at suitable places by the base class
+    #so if you derive and override the handle_xxx methods
+    #it's up to you to ensure that they maintain the needed consistency
+    def afterInit(self):
+        """This is called after initialisation of the base class."""
+        pass
 
-	def beforeDocument(self):
-		"""This is called before any processing is
-		done on the document."""
-		pass
+    def beforeDocument(self):
+        """This is called before any processing is
+        done on the document."""
+        pass
 
-	def beforePage(self):
-		"""This is called at the beginning of page
-		processing, and immediately before the
-		beforeDrawPage method of the current page
-		template."""
-		pass
+    def beforePage(self):
+        """This is called at the beginning of page
+        processing, and immediately before the
+        beforeDrawPage method of the current page
+        template."""
+        pass
 
-	def afterPage(self):
-		"""This is called after page processing, and
-		immediately after the afterDrawPage method
-		of the current page template."""
-		pass
+    def afterPage(self):
+        """This is called after page processing, and
+        immediately after the afterDrawPage method
+        of the current page template."""
+        pass
 
-	def filterFlowables(self,flowables):
-		'''called to filter flowables at the start of the main handle_flowable method.
-		Upon return if flowables[0] has been set to None it is discarded and the main
-		method returns.
-		'''
-		pass
+    def filterFlowables(self,flowables):
+        '''called to filter flowables at the start of the main handle_flowable method.
+        Upon return if flowables[0] has been set to None it is discarded and the main
+        method returns.
+        '''
+        pass
 
-	def afterFlowable(self, flowable):
-		'''called after a flowable has been rendered'''
-		pass
+    def afterFlowable(self, flowable):
+        '''called after a flowable has been rendered'''
+        pass
 
 
 class SimpleDocTemplate(BaseDocTemplate):
-	"""A special case document template that will handle many simple documents.
-	   See documentation for BaseDocTemplate.  No pageTemplates are required
-	   for this special case.	A page templates are inferred from the
-	   margin information and the onFirstPage, onLaterPages arguments to the build method.
+    """A special case document template that will handle many simple documents.
+       See documentation for BaseDocTemplate.  No pageTemplates are required
+       for this special case.   A page templates are inferred from the
+       margin information and the onFirstPage, onLaterPages arguments to the build method.
 
-	   A document which has all pages with the same look except for the first
-	   page may can be built using this special approach.
-	"""
-	_invalidInitArgs = ('pageTemplates',)
+       A document which has all pages with the same look except for the first
+       page may can be built using this special approach.
+    """
+    _invalidInitArgs = ('pageTemplates',)
 
-	def handle_pageBegin(self):
-		'''override base method to add a change of page template after the firstpage.
-		'''
-		self._handle_pageBegin()
-		self._handle_nextPageTemplate('Later')
+    def handle_pageBegin(self):
+        '''override base method to add a change of page template after the firstpage.
+        '''
+        self._handle_pageBegin()
+        self._handle_nextPageTemplate('Later')
 
-	def build(self,flowables,onFirstPage=_doNothing, onLaterPages=_doNothing):
-		"""build the document using the flowables.	Annotate the first page using the onFirstPage
-			   function and later pages using the onLaterPages function.  The onXXX pages should follow
-			   the signature
+    def build(self,flowables,onFirstPage=_doNothing, onLaterPages=_doNothing):
+        """build the document using the flowables.  Annotate the first page using the onFirstPage
+               function and later pages using the onLaterPages function.  The onXXX pages should follow
+               the signature
 
-				  def myOnFirstPage(canvas, document):
-					  # do annotations and modify the document
-					  ...
+                  def myOnFirstPage(canvas, document):
+                      # do annotations and modify the document
+                      ...
 
-			   The functions can do things like draw logos, page numbers,
-			   footers, etcetera. They can use external variables to vary
-			   the look (for example providing page numbering or section names).
-		"""
-		self._calc()	#in case we changed margins sizes etc
-		frameT = Frame(self.leftMargin, self.bottomMargin, self.width, self.height, id='normal')
-		self.addPageTemplates([PageTemplate(id='First',frames=frameT, onPage=onFirstPage,pagesize=self.pagesize),
-						PageTemplate(id='Later',frames=frameT, onPage=onLaterPages,pagesize=self.pagesize)])
-		if onFirstPage is _doNothing and hasattr(self,'onFirstPage'):
-			self.pageTemplates[0].beforeDrawPage = self.onFirstPage
-		if onLaterPages is _doNothing and hasattr(self,'onLaterPages'):
-			self.pageTemplates[1].beforeDrawPage = self.onLaterPages
-		BaseDocTemplate.build(self,flowables)
+               The functions can do things like draw logos, page numbers,
+               footers, etcetera. They can use external variables to vary
+               the look (for example providing page numbering or section names).
+        """
+        self._calc()    #in case we changed margins sizes etc
+        frameT = Frame(self.leftMargin, self.bottomMargin, self.width, self.height, id='normal')
+        self.addPageTemplates([PageTemplate(id='First',frames=frameT, onPage=onFirstPage,pagesize=self.pagesize),
+                        PageTemplate(id='Later',frames=frameT, onPage=onLaterPages,pagesize=self.pagesize)])
+        if onFirstPage is _doNothing and hasattr(self,'onFirstPage'):
+            self.pageTemplates[0].beforeDrawPage = self.onFirstPage
+        if onLaterPages is _doNothing and hasattr(self,'onLaterPages'):
+            self.pageTemplates[1].beforeDrawPage = self.onLaterPages
+        BaseDocTemplate.build(self,flowables)
 
 
-	##########################################################
-	##
-	##	 testing
-	##
-	##########################################################
+    ##########################################################
+    ##
+    ##   testing
+    ##
+    ##########################################################
 
 def randomText():
-	#this may or may not be appropriate in your company
-	from random import randint, choice
+    #this may or may not be appropriate in your company
+    from random import randint, choice
 
-	RANDOMWORDS = ['strategic','direction','proactive',
-	'reengineering','forecast','resources',
-	'forward-thinking','profit','growth','doubletalk',
-	'venture capital','IPO']
+    RANDOMWORDS = ['strategic','direction','proactive',
+    'reengineering','forecast','resources',
+    'forward-thinking','profit','growth','doubletalk',
+    'venture capital','IPO']
 
-	sentences = 5
-	output = ""
-	for sentenceno in range(randint(1,5)):
-		output = output + 'Blah'
-		for wordno in range(randint(10,25)):
-			if randint(0,4)==0:
-				word = choice(RANDOMWORDS)
-			else:
-				word = 'blah'
-			output = output + ' ' +word
-		output = output+'.'
-	return output
+    sentences = 5
+    output = ""
+    for sentenceno in range(randint(1,5)):
+        output = output + 'Blah'
+        for wordno in range(randint(10,25)):
+            if randint(0,4)==0:
+                word = choice(RANDOMWORDS)
+            else:
+                word = 'blah'
+            output = output + ' ' +word
+        output = output+'.'
+    return output
 
 
 if __name__ == '__main__':
 
-	def myFirstPage(canvas, doc):
-		canvas.saveState()
-		canvas.setStrokeColor(red)
-		canvas.setLineWidth(5)
-		canvas.line(66,72,66,PAGE_HEIGHT-72)
-		canvas.setFont('Times-Bold',24)
-		canvas.drawString(108, PAGE_HEIGHT-108, "TABLE OF CONTENTS DEMO")
-		canvas.setFont('Times-Roman',12)
-		canvas.drawString(4 * inch, 0.75 * inch, "First Page")
-		canvas.restoreState()
+    def myFirstPage(canvas, doc):
+        canvas.saveState()
+        canvas.setStrokeColor(red)
+        canvas.setLineWidth(5)
+        canvas.line(66,72,66,PAGE_HEIGHT-72)
+        canvas.setFont('Times-Bold',24)
+        canvas.drawString(108, PAGE_HEIGHT-108, "TABLE OF CONTENTS DEMO")
+        canvas.setFont('Times-Roman',12)
+        canvas.drawString(4 * inch, 0.75 * inch, "First Page")
+        canvas.restoreState()
 
-	def myLaterPages(canvas, doc):
-		canvas.saveState()
-		canvas.setStrokeColor(red)
-		canvas.setLineWidth(5)
-		canvas.line(66,72,66,PAGE_HEIGHT-72)
-		canvas.setFont('Times-Roman',12)
-		canvas.drawString(4 * inch, 0.75 * inch, "Page %d" % doc.page)
-		canvas.restoreState()
+    def myLaterPages(canvas, doc):
+        canvas.saveState()
+        canvas.setStrokeColor(red)
+        canvas.setLineWidth(5)
+        canvas.line(66,72,66,PAGE_HEIGHT-72)
+        canvas.setFont('Times-Roman',12)
+        canvas.drawString(4 * inch, 0.75 * inch, "Page %d" % doc.page)
+        canvas.restoreState()
 
-	def run():
-		objects_to_draw = []
-		from reportlab.lib.styles import ParagraphStyle
-		#from paragraph import Paragraph
-		from doctemplate import SimpleDocTemplate
+    def run():
+        objects_to_draw = []
+        from reportlab.lib.styles import ParagraphStyle
+        #from paragraph import Paragraph
+        from doctemplate import SimpleDocTemplate
 
-		#need a style
-		normal = ParagraphStyle('normal')
-		normal.firstLineIndent = 18
-		normal.spaceBefore = 6
-		import random
-		for i in range(15):
-			height = 0.5 + (2*random.random())
-			box = XBox(6 * inch, height * inch, 'Box Number %d' % i)
-			objects_to_draw.append(box)
-			para = Paragraph(randomText(), normal)
-			objects_to_draw.append(para)
+        #need a style
+        normal = ParagraphStyle('normal')
+        normal.firstLineIndent = 18
+        normal.spaceBefore = 6
+        import random
+        for i in range(15):
+            height = 0.5 + (2*random.random())
+            box = XBox(6 * inch, height * inch, 'Box Number %d' % i)
+            objects_to_draw.append(box)
+            para = Paragraph(randomText(), normal)
+            objects_to_draw.append(para)
 
-		SimpleDocTemplate('doctemplate.pdf').build(objects_to_draw,
-			onFirstPage=myFirstPage,onLaterPages=myLaterPages)
+        SimpleDocTemplate('doctemplate.pdf').build(objects_to_draw,
+            onFirstPage=myFirstPage,onLaterPages=myLaterPages)
 
-	run()
+    run()