Programmatic wrapper around ReportLab.
Project description
This is a wrapper for ReportLab which allows easy creation of PDF documents:
from io import BytesIO
from pdfdocument.document import PDFDocument
def say_hello():
f = BytesIO()
pdf = PDFDocument(f)
pdf.init_report()
pdf.h1('Hello World')
pdf.p('Creating PDFs made easy.')
pdf.generate()
return f.getvalue()
Letters and reports
PDFDocument comes with two different PDF templates, letters and reports. The only difference is the layout of the first page: The letter has an additional frame for the address at the top and a smaller main content area.
Usage is as follows:
pdf.init_report() # Or: pdf.init_letter()
The letter generates default styles using 9 point fonts as base size, the report uses 8 points. This can be changed by calling pdf.generate_style again.
There exists also a special type of report, the confidential report, the only differences being that the confidentiality is marked using a red cross at the top of the first page and a watermark in the background.
Styles
The call to pdf.generate_style generates a set of predefined styles. (Yes it does!) That includes the following styles; this list is neither exhaustive nor a promise:
pdf.style.normal
pdf.style.heading1
pdf.style.heading2
pdf.style.heading3
pdf.style.small
pdf.style.bold
pdf.style.right
pdf.style.indented
pdf.style.paragraph
pdf.style.table
Most of the time you will not use those attributes directly, except in the case of tables. Convenience methods exist for almost all styles as described in the next chapter.
Content
All content passed to the following methods is escaped by default. ReportLab supports a HTML-like markup language, if you want to use it directly you’ll have to either use only pdf.p_markup or resort to creating pdfdocument.document.MarkupParagraph instances by hand.
Headings
pdf.h1, pdf.h2, pdf.h3
Paragraphs
pdf.p, pdf.p_markup, pdf.small, pdf.smaller
Unordered lists
pdf.ul
Mini-HTML
pdf.mini_html
Various elements
pdf.hr, pdf.hr_mini, pdf.spacer, pdf.pagebreak, pdf.start_keeptogether, pdf.end_keeptogether, pdf.next_frame,
Tables
pdf.table, pdf.bottom_table
Canvas methods
Canvas methods work with the canvas directly, and not with Platypus objects. They are mostly useful inside stationery functions. You’ll mostly use ReportLab’s canvas methods directly, and only resort to the following methods for special cases.
pdf.confidential, pdf.draw_watermark, pdf.draw_svg
Additional methods
pdf.append, pdf.restart
Django integration
PDFDocument has a few helpers for generating PDFs in Django views, most notably pdfdocument.utils.pdf_response:
from pdfdocument.utils import pdf_response
def pdf_view(request):
pdf, response = pdf_response('filename_without_extension')
# ... more code
pdf.generate()
return response
The SVG support uses svglib by Dinu Gherman. It can be found on PyPI: <http://pypi.python.org/pypi/svglib/>
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