reportlab/platypus/doctemplate.py
author aaron_watters
Tue, 13 Jun 2000 13:03:31 +0000
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###############################################################################
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#
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#	ReportLab Public License Version 1.0
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#
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#   Except for the change of names the spirit and intention of this
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#   license is the same as that of Python
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#
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#	(C) Copyright ReportLab Inc. 1998-2000.
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#
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#
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# All Rights Reserved
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#
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose and without fee is hereby granted, provided
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# that the above copyright notice appear in all copies and that both that
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# copyright notice and this permission notice appear in supporting
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# documentation, and that the name of ReportLab not be used
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# in advertising or publicity pertaining to distribution of the software
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# without specific, written prior permission. 
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# 
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#
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# Disclaimer
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#
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# ReportLab Inc. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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# SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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# IN NO EVENT SHALL ReportLab BE LIABLE FOR ANY SPECIAL, INDIRECT
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# OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE. 
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#
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###############################################################################
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#	$Log: doctemplate.py,v $
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#	Revision 1.15  2000/06/13 13:03:31  aaron_watters
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#	more documentation changes
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#
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#	Revision 1.14  2000/06/01 16:27:56  rgbecker
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#	pageSize is wrong at present
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#	
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#	Revision 1.13  2000/06/01 15:23:06  rgbecker
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#	Platypus re-organisation
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#	
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#	Revision 1.12  2000/05/26 10:27:37  rgbecker
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#	Fixed infinite recursion bug
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#	
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#	Revision 1.11  2000/05/17 22:17:38  rgbecker
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#	Renamed BasicFrame to Frame
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#	
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#	Revision 1.10  2000/05/17 16:29:40  rgbecker
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#	Removal of SimpleFrame
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#	
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#	Revision 1.9  2000/05/17 15:37:33  rgbecker
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#	Changes related to removal of SimpleFlowDocument
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#	
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#	Revision 1.8  2000/05/16 16:15:16  rgbecker
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#	Changes related to removal of SimpleFlowDocument
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#	
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#	Revision 1.7  2000/05/16 14:28:55  rgbecker
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#	Fixes/Changes to get testplatypus to work with new framework
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#	
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#	Revision 1.6  2000/05/15 15:07:32  rgbecker
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#	Added drawPage
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#	
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#	Revision 1.5  2000/05/13 08:33:53  rgbecker
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#	fix typo in import
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#	
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#	Revision 1.4  2000/05/12 16:21:02  rgbecker
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#	_donothing explicit import
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#	
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#	Revision 1.3  2000/05/12 14:53:38  rgbecker
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#	Handle splitting error in build
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#	
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#	Revision 1.2  2000/05/12 14:45:31  rgbecker
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#	Single actions only in ActionFlowables
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#	
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#	Revision 1.1  2000/05/12 12:53:33  rgbecker
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#	Initial try at a document template class
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#	
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__version__=''' $Id: doctemplate.py,v 1.15 2000/06/13 13:03:31 aaron_watters Exp $ '''
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__doc__="""
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This module contains the core structure of platypus.
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Platypus constructs documents.  Document styles are determined by DocumentTemplates.
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Each DocumentTemplate contains one or more PageTemplates which defines the look of the
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pages of the document.
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Each PageTemplate has a procedure for drawing the "non-flowing" part of the page
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(for example the header, footer, page number, fixed logo graphic, watermark, etcetera) and
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a set of Frames which enclose the flowing part of the page (for example the paragraphs,
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tables, or non-fixed diagrams of the text).
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A document is built when a DocumentTemplate is fed a sequence of Flowables.
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The action of the build consumes the flowables in order and places them onto
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frames on pages as space allows.  When a frame runs out of space the next frame
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of the page is used.  If no frame remains a new page is created.  A new page
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can also be created if a page break is forced.
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The special invisible flowable NextPageTemplate can be used to specify
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the page template for the next page (which by default is the one being used
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for the current frame).
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"""
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from flowables import *
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from frames import Frame
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from types import *
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import sys
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def _doNothing(canvas, doc):
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	"Dummy callback for onPage"
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	pass
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class ActionFlowable(Flowable):
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	'''This Flowable is never drawn, it can be used for data driven controls
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	   For example to change a page template (from one column to two, for example)
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	   use NextPageTemplate which creates an ActionFlowable.
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	'''
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	def __init__(self,action=[]):
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		if type(action) not in (ListType, TupleType):
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			action = (action,)
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		self.action = action
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	def wrap(self, availWidth, availHeight):
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		raise NotImplementedError
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	def draw(self):
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		raise NotImplementedError
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	def apply(self,doc):
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		action = self.action[0]
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		args = tuple(self.action[1:])
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		arn = 'handle_'+action
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		try:
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			apply(getattr(doc,arn), args)
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		except AttributeError, aerr:
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			if aerr.args[0]==arn:
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				raise NotImplementedError, "Can't handle ActionFlowable(%s)" % action
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			else:
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				raise
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		except "bogus":
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			t, v, None = sys.exc_info()
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			raise t, "%s\n   handle_%s args=%s"%(v,action,args)
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	def __call__(self):
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		return self
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FrameBreak = ActionFlowable('frameEnd')
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PageBegin = ActionFlowable('pageBegin')
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class NextPageTemplate(ActionFlowable):
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	"""When you get to the next page, use the template specified (change to two column, for example)  """
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	def __init__(self,pt):
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		ActionFlowable.__init__(self,('nextPageTemplate',pt))
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class PageTemplate:
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	"""
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	essentially a list of Frames and an onPage routine to call at the start
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	of a page when this is selected.
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	derived classes can also implement drawPage if they want
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	"""
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	def __init__(self,id=None,frames=[],onPage=None):
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		if type(frames) not in (ListType,TupleType): frames = [frames]
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		assert filter(lambda x: not isinstance(x,Frame), frames)==[], "frames argument error"
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		self.id = id
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		self.frames = frames
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		self.onPage = onPage or _doNothing
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	def drawPage(self,canv,doc):
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		'''	Override this if you want additional functionality or prefer a class
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			based page routine
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		'''
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		pass
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class BaseDocTemplate:
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	"""
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	First attempt at defining a document template class.
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	The basic idea is simple.
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	0)	The document has a list of data associated with it
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		this data should derive from flowables. We'll have
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		special classes like PageBreak, FrameBreak to do things
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		like forcing a page end etc.
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	1)	The document has one or more page templates.
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	2)	Each page template has one or more frames.
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	3)	The document class provides base methods for handling the
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		story events and some reasonable methods for getting the
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		story flowables into the frames.
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	4)	The document instances can override the base handler routines.
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	Most of the methods for this class are not called directly by the user,
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	but in some advanced usages they may need to be overridden via subclassing.
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	EXCEPTION: doctemplate.build(...) must be called for most reasonable uses
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	since it builds a document using the page template.
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        Each document template builds exactly one document into a file specified
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        by the filename argument on initialization.
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	Possible keyword arguments for the initialization:
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	pageTemplates: A list of templates.  Must be nonempty.  Names
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	  assigned to the templates are used for referring to them so no two used
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	  templates should have the same name.  For example you might want one template
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	  for a title page, one for a section first page, one for a first page of
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	  a chapter and two more for the interior of a chapter on odd and even pages.
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	  If this argument is omitted then at least one pageTemplate should be provided
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	  using the addPageTemplates method before the document is built.
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	showBoundary: (for debugging) if set draw a box around the frame boundaries.
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	leftMargin:
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	rightMargin:
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	topMargin:
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	bottomMargin:  Margin sizes in points (default 1 inch)
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	  These margins may be overridden by the pageTemplates.  They are primarily of interest
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	  for the SimpleDocumentTemplate subclass.
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	allowSplitting:  If set flowables (eg, paragraphs) may be split across frames or pages
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	  (default: 1)
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	title: Internal title for document (does not automatically display on any page)
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	author: Internal author for document (does not automatically display on any page)
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	"""
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	_initArgs = {	'pagesize':DEFAULT_PAGE_SIZE,
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					'pageTemplates':[],
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					'showBoundary':0,
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					'leftMargin':inch,
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					'rightMargin':inch,
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					'topMargin':inch,
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					'bottomMargin':inch,
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					'allowSplitting':1,
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					'title':None,
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					'author':None,
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					'_pageBreakQuick':1}
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	_invalidInitArgs = ()
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	def __init__(self, filename, **kw):
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		"""create a document template bound to a filename (see class documentation for keyword arguments)"""
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		self.filename = filename
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		for k in self._initArgs.keys():
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			if not kw.has_key(k):
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				v = self._initArgs[k]
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			else:
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				if k in self._invalidInitArgs:
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					raise ValueError, "Invalid argument %s" % k
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				v = kw[k]
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			setattr(self,k,v)
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		p = self.pageTemplates
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		self.pageTemplates = []
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		self.addPageTemplates(p)
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		self._calc()
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	def _calc(self):
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		self._rightMargin = self.pagesize[0] - self.rightMargin
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		self._topMargin = self.pagesize[1] - self.topMargin
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		self.width = self._rightMargin - self.leftMargin
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		self.height = self._topMargin - self.bottomMargin
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	def clean_hanging(self):
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		'handle internal postponed actions'
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		while len(self._hanging):
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			self.handle_flowable(self._hanging)
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	def addPageTemplates(self,pageTemplates):
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		'add one or a sequence of pageTemplates'
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		if type(pageTemplates) not in (ListType,TupleType):
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			pageTemplates = [pageTemplates]
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		assert filter(lambda x: not isinstance(x,PageTemplate), pageTemplates)==[], "pageTemplates argument error"
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		for t in pageTemplates:
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			self.pageTemplates.append(t)
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	def handle_documentBegin(self):
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		'''Hook actions at beginning of document'''
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		self._hanging = [PageBegin]
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		self.pageTemplate = self.pageTemplates[0]
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		self.page = 0
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	def handle_pageBegin(self):
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		'''Perform actions required at beginning of page.
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		shouldn't normally be called directly'''
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		self.page = self.page + 1
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		self.pageTemplate.drawPage(self.canv,self)
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		self.pageTemplate.onPage(self.canv,self)
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		if hasattr(self,'_nextFrameIndex'):
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			del self._nextFrameIndex
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		self.frame = self.pageTemplate.frames[0]
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		self.handle_frameBegin()
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	def handle_pageEnd(self):
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		'''	show the current page
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			check the next page template
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			hang a page begin
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		'''
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		self.canv.showPage()
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		if hasattr(self,'_nextPageTemplateIndex'):
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			self.pageTemplate = self.pageTemplates[self._nextPageTemplateIndex]
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			del self._nextPageTemplateIndex
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		self._hanging.append(PageBegin)
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	def handle_pageBreak(self):
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		'''some might choose not to end all the frames'''
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		if self._pageBreakQuick:
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			self.handle_pageEnd()
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		else:
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			n = len(self._hanging)
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			while len(self._hanging)==n:
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				self.handle_frameEnd()
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	def handle_frameBegin(self,*args):
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		'''What to do at the beginning of a page'''
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		self.frame._reset()
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		if self.showBoundary or self.frame.showBoundary:
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			self.frame.drawBoundary(self.canv)
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	def handle_frameEnd(self):
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		'''	Handles the semantics of the end of a frame. This includes the selection of
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			the next frame or if this is the last frame then invoke pageEnd.
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		'''
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		if hasattr(self,'_nextFrameIndex'):
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			frame = self.pageTemplate.frames[self._nextFrameIndex]
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			del self._nextFrameIndex
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			self.handle_frameBegin()
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		elif hasattr(self.frame,'lastFrame') or self.frame is self.pageTemplate.frames[-1]:
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			self.handle_pageEnd()
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			self.frame = None
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		else:
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			f = self.frame
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			self.frame = self.pageTemplate.frames[self.pageTemplate.frames.index(f) + 1]
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			self.handle_frameBegin()
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	def handle_nextPageTemplate(self,pt):
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		'''On endPage chenge to the page template with name or index pt'''
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		if type(pt) is StringType:
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			for t in self.pageTemplates:
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				if t.id == pt:
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					self._nextPageTemplateIndex = self.pageTemplates.index(t)
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					return
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			raise ValueError, "can't find template('%s')"%pt
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		elif type(pt) is IntType:
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			self._nextPageTemplateIndex = pt
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		else:
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			raise TypeError, "argument pt should be string or integer"
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	def handle_nextFrame(self,fx):
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		'''On endFrame chenge to the frame with name or index fx'''
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   347
		if type(fx) is StringType:
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parents:
diff changeset
   348
			for f in self.pageTemplate.frames:
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   349
				if f.id == fx:
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   350
					self._nextFrameIndex = self.pageTemplate.frames.index(f)
b8ca098f5ec7 Initial try at a document template class
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   351
					return
b8ca098f5ec7 Initial try at a document template class
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   352
			raise ValueError, "can't find frame('%s')"%fx
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   353
		elif type(fx) is IntType:
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   354
			self._nextFrameIndex = fx
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   355
		else:
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   356
			raise TypeError, "argument fx should be string or integer"
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   357
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   358
	def handle_currentFrame(self,fx):
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   359
		'''chenge to the frame with name or index fx'''
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   360
		if type(fx) is StringType:
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   361
			for f in self.pageTemplate.frames:
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   362
				if f.id == fx:
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   363
					self._nextFrameIndex = self.pageTemplate.frames.index(f)
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   364
					return
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   365
			raise ValueError, "can't find frame('%s')"%fx
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   366
		elif type(fx) is IntType:
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   367
			self._nextFrameIndex = fx
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   368
		else:
b8ca098f5ec7 Initial try at a document template class
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diff changeset
   369
			raise TypeError, "argument fx should be string or integer"
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   370
b8ca098f5ec7 Initial try at a document template class
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diff changeset
   371
	def handle_flowable(self,flowables):
218
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
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diff changeset
   372
		'''try to handle one flowable from the front of list flowables.'''
197
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   373
		f = flowables[0]
b8ca098f5ec7 Initial try at a document template class
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   374
		del flowables[0]
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   375
b8ca098f5ec7 Initial try at a document template class
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diff changeset
   376
		if isinstance(f,PageBreak):
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   377
			self.handle_pageBreak()
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   378
		elif isinstance(f,ActionFlowable):
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   379
			f.apply(self)
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   380
		else:
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parents:
diff changeset
   381
			#general case we have to do something
218
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diff changeset
   382
			if not self.frame.add(f, self.canv, trySplit=self.allowSplitting):
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rgbecker
parents: 214
diff changeset
   383
				if self.allowSplitting:
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
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diff changeset
   384
					# see if this is a splittable thing
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rgbecker
parents: 214
diff changeset
   385
					S = self.frame.split(f)
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diff changeset
   386
					n = len(S)
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parents: 214
diff changeset
   387
				else:
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diff changeset
   388
					n = 0
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
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diff changeset
   389
197
b8ca098f5ec7 Initial try at a document template class
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parents:
diff changeset
   390
				if n:
200
74da573e661f Handle splitting error in build
rgbecker
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diff changeset
   391
					if not self.frame.add(S[0], self.canv, trySplit=0):
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diff changeset
   392
						raise "LayoutError", "splitting error"
74da573e661f Handle splitting error in build
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parents: 199
diff changeset
   393
					del S[0]
74da573e661f Handle splitting error in build
rgbecker
parents: 199
diff changeset
   394
					for f in xrange(n-1):
197
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   395
						flowables.insert(f,S[f])	# put split flowables back on the list
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   396
				else:
249
1d9ea4f00348 Fixed infinite recursion bug
rgbecker
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diff changeset
   397
					if hasattr(f,'postponed'):
1d9ea4f00348 Fixed infinite recursion bug
rgbecker
parents: 227
diff changeset
   398
						raise "LayoutError", "Flowable too large"
1d9ea4f00348 Fixed infinite recursion bug
rgbecker
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diff changeset
   399
					f.postponed = 1
197
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   400
					flowables.insert(0,f)			# put the flowable back
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   401
					self.handle_frameEnd()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   402
204
b19c3cae893a _donothing explicit import
rgbecker
parents: 200
diff changeset
   403
	#these are provided so that deriving classes can refer to them
197
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   404
	_handle_documentBegin = handle_documentBegin
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   405
	_handle_pageBegin = handle_pageBegin
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   406
	_handle_pageEnd = handle_pageEnd
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   407
	_handle_frameBegin = handle_frameBegin
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   408
	_handle_frameEnd = handle_frameEnd
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   409
	_handle_flowable = handle_flowable
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   410
	_handle_nextPageTemplate = handle_nextPageTemplate
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   411
	_handle_currentFrame = handle_currentFrame
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   412
	_handle_nextFrame = handle_nextFrame
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   413
218
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   414
	def _startBuild(self):
253
cfcf8d555a2c Platypus re-organisation
rgbecker
parents: 249
diff changeset
   415
		self._calc()
197
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   416
		self.canv = canvas.Canvas(self.filename)
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   417
		self.handle_documentBegin()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   418
218
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   419
	def _endBuild(self):
197
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   420
		if self._hanging!=[] and self._hanging[-1] is PageBegin:
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   421
			del self._hanging[-1]
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   422
			self.clean_hanging()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   423
		else:
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   424
			self.clean_hanging()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   425
			self.handle_pageBreak()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   426
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   427
		self.canv.save()
b8ca098f5ec7 Initial try at a document template class
rgbecker
parents:
diff changeset
   428
		del self.frame, self.pageTemplate
218
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   429
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   430
	def build(self, flowables):
268
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   431
		"""Build the document from a list of flowables."""
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   432
		#assert filter(lambda x: not isinstance(x,Flowable), flowables)==[], "flowables argument error"
218
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   433
		self._startBuild()
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   434
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   435
		while len(flowables):
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   436
			self.clean_hanging()
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   437
			self.handle_flowable(flowables)
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   438
274db2129c04 Fixes/Changes to get testplatypus to work with new framework
rgbecker
parents: 214
diff changeset
   439
		self._endBuild()
221
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   440
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   441
class SimpleDocTemplate(BaseDocTemplate):
268
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   442
	"""A special case document template that will handle many simple documents.
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   443
	   See documentation for BaseDocTemplate.  No pageTemplates are required 
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   444
	   for this special case.   A page templates are inferred from the
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   445
	   margin information and the onFirstPage, onLaterPages arguments to the build method.
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   446
	   
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   447
	   A document which has all pages with the same look except for the first
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   448
	   page may can be built using this special approach.
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   449
	   """
221
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   450
	def handle_pageBegin(self):
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   451
		self._handle_pageBegin()
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   452
		self._handle_nextPageTemplate('Later')
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   453
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   454
	def build(self,flowables,onFirstPage=_doNothing, onLaterPages=_doNothing):
268
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   455
	        """build the document using the flowables.  Annotate the first page using the onFirstPage
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   456
	           function and later pages using the onLaterPages function.  The onXXX pages should follow
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   457
	           the signature
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   458
	           
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   459
	              def myOnFirstPage(canvas, document):
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   460
	                  # do annotations and modify the document
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   461
	                  ...
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   462
	                  
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   463
	           The functions can do thing like draw logos, page numbers,
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   464
	           footers, etcetera. They can use external variables to vary
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   465
	           the look (for example providing page numbering or section names).
8414113fa500 more documentation changes
aaron_watters
parents: 255
diff changeset
   466
	        """
227
fa5b4d81f471 Renamed BasicFrame to Frame
rgbecker
parents: 226
diff changeset
   467
		frameT = Frame(self.leftMargin, self.bottomMargin, self.width, self.height, id='normal')
221
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   468
		self.addPageTemplates([PageTemplate(id='First',frames=frameT, onPage=onFirstPage),
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   469
						PageTemplate(id='Later',frames=frameT, onPage=onLaterPages)])
225
1f58b00cf30e Changes related to removal of SimpleFlowDocument
rgbecker
parents: 221
diff changeset
   470
		if onFirstPage is _doNothing and hasattr(self,'onFirstPage'):
1f58b00cf30e Changes related to removal of SimpleFlowDocument
rgbecker
parents: 221
diff changeset
   471
			self.pageTemplates[0].drawPage = self.onFirstPage
1f58b00cf30e Changes related to removal of SimpleFlowDocument
rgbecker
parents: 221
diff changeset
   472
		if onLaterPages is _doNothing and hasattr(self,'onLaterPages'):
1f58b00cf30e Changes related to removal of SimpleFlowDocument
rgbecker
parents: 221
diff changeset
   473
			self.pageTemplates[1].drawPage = self.onLaterPages
221
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   474
		BaseDocTemplate.build(self,flowables)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   475
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   476
if __name__ == '__main__':
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   477
	##########################################################
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   478
	##
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   479
	##	 testing
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   480
	##
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   481
	##########################################################
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   482
	def randomText():
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   483
		#this may or may not be appropriate in your company
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   484
		from random import randint, choice
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   485
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   486
		RANDOMWORDS = ['strategic','direction','proactive',
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   487
		'reengineering','forecast','resources',
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   488
		'forward-thinking','profit','growth','doubletalk',
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   489
		'venture capital','IPO']
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   490
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   491
		sentences = 5
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   492
		output = ""
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   493
		for sentenceno in range(randint(1,5)):
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   494
			output = output + 'Blah'
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   495
			for wordno in range(randint(10,25)):
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   496
				if randint(0,4)==0:
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   497
					word = choice(RANDOMWORDS)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   498
				else:
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   499
					word = 'blah'
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   500
				output = output + ' ' +word
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   501
			output = output+'.'
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   502
		return output
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   503
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   504
	def myFirstPage(canvas, doc):
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   505
		canvas.saveState()
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   506
		canvas.setStrokeColor(red)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   507
		canvas.setLineWidth(5)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   508
		canvas.line(66,72,66,PAGE_HEIGHT-72)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   509
		canvas.setFont('Times-Bold',24)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   510
		canvas.drawString(108, PAGE_HEIGHT-108, "PLATYPUS")
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   511
		canvas.setFont('Times-Roman',12)
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   512
		canvas.drawString(4 * inch, 0.75 * inch, "First Page")
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   513
		canvas.restoreState()
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
parents: 218
diff changeset
   514
3d71b66b14c6 Changes related to removal of SimpleFlowDocument
rgbecker
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diff changeset
   515
	def myLaterPages(canvas, doc):
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   516
		canvas.saveState()
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   517
		canvas.setStrokeColor(red)
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   518
		canvas.setLineWidth(5)
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   519
		canvas.line(66,72,66,PAGE_HEIGHT-72)
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   520
		canvas.setFont('Times-Roman',12)
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   521
		canvas.drawString(4 * inch, 0.75 * inch, "Page %d" % doc.page)
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   522
		canvas.restoreState()
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   523
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   524
	def run():
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   525
		objects_to_draw = []
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   526
		from reportlab.lib.styles import ParagraphStyle
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   527
		#from paragraph import Paragraph
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   528
		from doctemplate import SimpleDocTemplate
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diff changeset
   529
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   530
		#need a style
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   531
		normal = ParagraphStyle('normal')
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   532
		normal.firstLineIndent = 18
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   533
		normal.spaceBefore = 6
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   534
		import random
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   535
		for i in range(15):
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diff changeset
   536
			height = 0.5 + (2*random.random())
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   537
			box = XBox(6 * inch, height * inch, 'Box Number %d' % i)
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   538
			objects_to_draw.append(box)
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   539
			para = Paragraph(randomText(), normal)
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   540
			objects_to_draw.append(para)
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diff changeset
   541
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   542
		SimpleDocTemplate('doctemplate.pdf').build(objects_to_draw,
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   543
			onFirstPage=myFirstPage,onLaterPages=myLaterPages)
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diff changeset
   544
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diff changeset
   545
	run()