[reportlab-users] User Guidance Required
Prabhakar Moka
Hi All,
I am using ReportLab 2.7 with Python 2.7. I am able to create a pdf with clickable bookmarks in the table of contents (toc) and created a pdf with "x of y" page numbering also. Here my problem is bookmarkpage(key) appears to break when I try to do both. Only FooterCanvas is working for me. And also you check the below code snippet which was failed.
Could someone please help me to resolve this?
I really appreciate any help you can provide.
Regards,
Prabhakar
class FooterCanvas(canvas.Canvas):
def __init__(self, *args, **kwargs):
canvas.Canvas.__init__(self, *args, **kwargs)
self.pages = []
def showPage(self):
self.pages.append(dict(self.__dict__))
self._startPage()
def save(self):
page_count = len(self.pages)
for page in self.pages:
self.__dict__.update(page)
self.draw_canvas(page_count)
canvas.Canvas.showPage(self)
canvas.Canvas.save(self)
def draw_canvas(self, page_count):
page = "Page %s of %s" % (self._pageNumber, page_count)
x = 128
self.saveState()
self.setStrokeColorRGB(0, 0, 0)
self.setLineWidth(0.5)
self.line(66, 78, LETTER[0] - 66, 78)
self.setFont('Times-Roman', 10)
self.drawString(LETTER[0]-x, 65, page)
self.restoreState()
class MyDocTemplate(BaseDocTemplate):
def __init__(self, filename, **kw):
self.allowSplitting = 0
apply(BaseDocTemplate.__init__, (self, filename), kw)
template = PageTemplate('normal', [Frame(2.5*cm, 2.5*cm, 15*cm, 25*cm, id='F1')])
self.addPageTemplates(template)
# Entries to the table of contents can be done either manually by
# calling the addEntry method on the TableOfContents object or automatically
# by sending a 'TOCEntry' notification in the afterFlowable method of
# the DocTemplate you are using. The data to be passed to notify is a list
# of three or four items countaining a level number, the entry text, the page
# number and an optional destination key which the entry should point to.
# This list will usually be created in a document template's method like
# afterFlowable(), making notification calls using the notify() method
# with appropriate data.
def afterFlowable(self, flowable):
"Registers TOC entries."
if flowable.__class__.__name__ == 'Paragraph':
text = flowable.getPlainText()
style = flowable.style.name
if style == 'Heading1':
level = 0
elif style == 'Heading2':
level = 1
else:
return
E = [level, text, self.page]
#if we have a bookmark name append that to our notify data
bn = getattr(flowable,'_bookmarkName',None)
if bn is not None: E.append(bn)
self.notify('TOCEntry', tuple(E))
centered = PS(name = 'centered', fontSize = 30,leading = 16, alignment = 1,spaceAfter = 20)
h1 = PS(name = 'Heading1',fontSize = 14,leading = 16)
h2 = PS(name = 'Heading2',fontSize = 12,leading = 14)
# Build story.
story = []
# Create an instance of TableOfContents. Override the level styles (optional)
# and add the object to the story
toc = TableOfContents()
toc.levelStyles = [
PS(fontName='Times-Bold', fontSize=20, name='TOCHeading1', leftIndent=20, firstLineIndent=-20, spaceBefore=10, leading=16),
PS(fontSize=18, name='TOCHeading2', leftIndent=40, firstLineIndent=-20, spaceBefore=5, leading=12),
]
story.append(Paragraph('<b>Table of contents</b>', centered))
story.append(toc)
#this function makes our headings
def doHeading(text,sty):
from hashlib import sha1
#create bookmarkname
bn=sha1(text+sty.name).hexdigest()
#modify paragraph text to include an anchor point with name bn
h=Paragraph(text+'<a name="%s"/>' % bn,sty)
#store the bookmark name on the flowable so afterFlowable can see this
h._bookmarkName=bn
story.append(h)
#story.append(Paragraph('<b>Table of contents</b>', centered))
story.append(PageBreak())
doHeading('First heading', h1)
story.append(Paragraph('Text in first heading', PS('body')))
doHeading('First sub heading', h2)
story.append(Paragraph('Text in first sub heading', PS('body')))
story.append(PageBreak())
doHeading('Second sub heading', h2)
story.append(Paragraph('Text in second sub heading', PS('body')))
story.append(PageBreak())
doHeading('Last heading', h1)
story.append(Paragraph('Text in last heading', PS('body')))
doc = MyDocTemplate('mintoc.pdf')
doc.multiBuild(story, canvasmaker = FooterCanvas)
Robin Becker
I could not run your example. Please paste the whole working example so
1) we don't have to do all the imports ourselves
2) we don't have to guess what PS does.
3) it would also help if you didn't add * around certain lines and also did not
add empty lines, but 1 and 2 would really help.
On 12/10/2016 17:02, Prabhakar Moka wrote:
> Hi All,
>
>
>
> I am using ReportLab 2.7 with Python 2.7. I am able to create a pdf with
> clickable bookmarks in the table of contents (toc) and created a pdf with
> "x of y" page numbering also. Here my problem is bookmarkpage(key) appears
>
>
>
> Could someone please help me to resolve this?
>
>
>
> I really appreciate any help you can provide.
>
>
>
> Regards,
>
> Prabhakar
>
Robin Becker
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Hans Schmidt
I know this answer is all to late. But as I have currently struggled with exactly the same problem I want to post my solution here in case that someone else is finding this helpful.
I also had the problem that implementing the "page x of y" workaround (see also http://code.activestate.com/recipes/576832-improved-reportlab-recipe-for-page-x-of-y/) broke the internal links (bookmarks) I've generated. After some debugging within the ReportLab framework I found that the problem lies in the pagenumber of the "Destination" which is always set to page 1 due to the uncomplete overwriting of showPage (which normally is doing the update of the pagenumber after each new page).
So my working solution of the "NumberedCanvas" class looks like following now:
class NumberedCanvas(canvas.Canvas):
def __init__(self, *args, **kwargs):
canvas.Canvas.__init__(self, *args, **kwargs)
self._saved_page_states = []
def showPage(self):
self._saved_page_states.append(dict(self.__dict__))
self._doc.pageCounter += 1
self._startPage()
def save(self):
"""add page info to each page (page x of y)"""
num_pages = len(self._saved_page_states)
self._doc.pageCounter = 1
for state in self._saved_page_states:
self.__dict__.update(state)
self.draw_page_number(num_pages)
canvas.Canvas.showPage(self)
canvas.Canvas.save(self)
def draw_page_number(self, page_count):
page_info = "{}/{}".format(self._pageNumber, page_count)
self.drawRightString(200 * mm, 7 * mm, page_info)
Hope that helps someone!
Best regards,
Wusaweki
