[reportlab-users] Has next Page?

[J. R. Carroll]

Estartu,

I am having to do a custom class so I can generate "Page 1 of <max pages>"
- which is similar to what you are wanting to do; I took an example and
made minor modifications from a code snippet I got off of ActiveState - but
since then I have seen reportlab solutions that come directly from
reportlab.  All-the-same, this relates to you because I can imagine that
you could use the same code and instead of printing 'Page # of #" you could
just use the following *PSEUDO CODE:*
*
*
if current_page_number < max_page_number:
    print "Turn the Page"
else:
    pass   # or, print "End of Document"



*Here is the reportlab code I am using (I had to do some quick edits to
remove some company details, so if you see something awry it might be
because I made an edit there - but look down around "Page # of #" below and
that's where you could write something to say "turn to next page") - if you
need help doing this, I can't imagine it taking more than a few minutes,
let me know and I'll be happy to assist:*

# Imports from ReportLab
import reportlab.pdfgen.canvas as canvas

from reportlab.lib.pagesizes import LETTER, A4
from reportlab.lib.units import mm
from reportlab.rl_config import defaultPageSize
from reportlab.lib import colors


class NumberedCanvas(canvas.Canvas):
    """A subclass/child of the superclass canvas.Canvas.  Modifications to
the
    parent class are to add page numbers, titles, and dates to the save-page
    states when self.save() is called.

    Additional arguments are initialized upon class instantiation which set
    variables native to the type of report being run. """

    def __init__(self, *args, **kwargs):
        """
        Instantiates a subclass of canvas.Canvas
        """

        self.REPORT_TITLE = kwargs.pop('titled', None)
        self.title_type = kwargs.pop('title_type', None)
        self.time = kwargs.pop('time', None)

        canvas.Canvas.__init__(self, *args, **kwargs)
        self._saved_page_states = []

    def showPage(self):
        """
        Overwridden method of canvas.Canvas that counts number of pages
        """

        self._saved_page_states.append(dict(self.__dict__))
        self._startPage()

    def save(self, titled=None):
        """
        Save and add page info to each page (page number and date-time
stamp)
        """

        num_pages = len(self._saved_page_states)
        headerimage = "../../include/images/our-logo.gif"
        _title = titled

        for state in self._saved_page_states:
            self.__dict__.update(state)
            self.draw_footer(num_pages)
            self.draw_header(headerimage)
            canvas.Canvas.showPage(self)

        canvas.Canvas.save(self)

    def draw_footer(self, page_count):
        """
        Draws the footer information (date, filename, page# --- in that
order)
        """

        _off_y = 8

        self.setFont("Courier", 8)
        self.saveState()
        self.setStrokeColor(colors.black)
        self.drawRightString(defaultPageSize[1] - 110, _off_y * mm, "Page
%d of %d" % (self._pageNumber, page_count))
        self.drawString(20 * mm, _off_y * mm, self.time)
        self.drawCentredString((self._pagesize[0] / 2), _off_y * mm,
self.REPORT_TITLE)
        self.restoreState()




----


J. R. Carroll
Cell:  (650) 776-6613
www.jrcresearch.net
www.ontvp.com
Email: jrcarroll at jrcresearch.net
          jrcarroll at hurtzlab.com
          jrc.csus at gmail.com
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On Mon, Dec 17, 2012 at 1:42 AM, Gerhard Schmidt <estartu at augusta.de> wrote:


> Estartu

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