[reportlab-users] ActionFlowable usage for datadriven headers

[reportlab-users@reportlab.com]

Hi
here is the version of Marc but using 
ActionFlowable for trigger header change :


*add a handle to be called by Action flowable to BaseDocTemplate

class REPORT(BaseDocTemplate):
	def handle_setPageTitle(self,text):
		self.pageTemplate.Title=text


* needed in the call below redefined instead of imported

def _doNothing(canves,doc): pass



* call the super constructor and adds a Title property
* fill the before drawpage method

class drivenPage(PageTemplate):

	def __init__(self,id=None,frames=[],onPage=_doNothing, 
onPageEnd=_doNothing ):

		PageTemplate.__init__(self,id,frames,onPage,onPageEnd)
		self.Title=''

	def beforeDrawPage(self, canv,doc):
		canv.saveState()
		canv.setFont('Helvetica',10)
		canv.drawString(1.1*cm ,28.5*cm,self.Title)	
		canv.line(1 * cm,28 * cm,20 * cm, 28 * cm)
		canv.restoreState()



**next in the story list call as 

actionheader=ActionFlowable(action=('setPageTitle',TEXT)
story.append(actionheader)


maybe the base class PageTemplate could have the Title property
natively, because it is rather often needed and does have its place
here and not in frames for instance


pascal