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Version Bumps #2

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f8ecd40
first pass, booklet not working
lelandpaul Jan 5, 2024
bd22c96
fix duplexing
lelandpaul Jan 6, 2024
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Binary file modified carols-booklet.pdf
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6 changes: 3 additions & 3 deletions requirements.txt
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
ordered-set==2.0.2
PyLaTeX==1.2.1
PyPDF2==1.26.0
ordered-set==4.1.0
PyLaTeX==1.4.2
PyPDF2==3.0.1
50 changes: 28 additions & 22 deletions utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,7 @@
import re
import subprocess

from PyPDF2 import PdfFileWriter, PdfFileReader
from PyPDF2.pdf import PageObject
from pypdf import PdfWriter, PdfReader, PageObject, Transformation

class LilypondException(Exception):
pass
Expand Down Expand Up @@ -108,26 +107,26 @@ def make_booklet(input_file, output_file):
should then print this document with 2 pages per sheet.)
"""

output_pdf = PdfFileWriter()
output_pdf = PdfWriter()

with open(input_file, 'rb') as readfile:
orig_pdf = PdfFileReader(readfile)
orig_pdf = PdfReader(readfile)

input_pdf = PdfFileWriter()
input_pdf.cloneDocumentFromReader(orig_pdf)
input_pdf = PdfWriter()
input_pdf.clone_document_from_reader(orig_pdf)

total_pages = input_pdf.getNumPages()
total_pages = len(input_pdf.pages)

# For booklets to print correctly, number of pages should be divisible
# by 4. If this isn't the case, add blank pages to the end until total
# number of pages is divisible by 4.
remainder = total_pages % 4
if remainder != 0:
for _ in range(4-remainder):
input_pdf.addBlankPage()
input_pdf.add_blank_page()

# reset total_pages, b/c it has changed
total_pages = input_pdf.getNumPages()
total_pages = len(input_pdf.pages)

i = 0 # increment from start
j = total_pages - 1 # decrement from end
Expand All @@ -139,17 +138,17 @@ def make_booklet(input_file, output_file):


# Get dimensions from the first page (we'll need them for duplexing)
pg = input_pdf.getPage(0)
width, height = pg.mediaBox.getWidth(), pg.mediaBox.getHeight()
pg = input_pdf.pages[0]
width, height = pg.mediabox.width, pg.mediabox.height

# Given pages A, B, C, D, we want to reorder them: D, A, B, C
for _ in range(total_pages//4):
output_pdf.addPage(duplex_pages(input_pdf.getPage(j), input_pdf.getPage(i),
output_pdf.add_page(duplex_pages(input_pdf.pages[j], input_pdf.pages[i],
orig_width=width, orig_height=height))
j -= 1
i += 1

output_pdf.addPage(duplex_pages(input_pdf.getPage(i), input_pdf.getPage(j),
output_pdf.add_page(duplex_pages(input_pdf.pages[i], input_pdf.pages[j],
orig_width=width, orig_height=height))
i += 1
j -= 1
Expand All @@ -169,27 +168,34 @@ def duplex_pages(p1, p2, orig_width=0, orig_height=0):
be pulled from the input pdfs.
"""
if not orig_width:
orig_width = p1.mediaBox.getWidth()
orig_width = p1.mediabox.width
if not orig_height:
orig_height = p1.mediaBox.getHeight()
orig_height = p1.mediabox.height

orig_width = int(orig_width)
orig_height = int(orig_height)

# Target is landscape (reverse original width and height)
target = PageObject.createBlankPage(None, orig_height, orig_width)
target = PageObject.create_blank_page(None, orig_height, orig_width)

# Scale pages
SCALE_FACTOR = .7
p1.scaleBy(SCALE_FACTOR)
p2.scaleBy(SCALE_FACTOR)
p1.scale_by(SCALE_FACTOR)
p2.scale_by(SCALE_FACTOR)
new_width, new_height = SCALE_FACTOR * orig_width, SCALE_FACTOR * orig_height

# Merge them into the target page
target.mergeTranslatedPage(p1,
(orig_height/2 - new_width)/2, (orig_width - new_height)/2)
target.mergeTranslatedPage(p2,
orig_height/2 + (orig_height/2 - new_width)/2, (orig_width - new_height)/2)
target.merge_translated_page(
p1,
(orig_height/2 - new_width)/2,
(orig_width - new_height)/2
)

target.merge_translated_page(
p2,
orig_height/2 + (orig_height/2 - new_width)/2,
(orig_width - new_height)/2
)

return target

Expand Down