cut_depth = 1.95 * points_per_cm
cut_width = 1.05 * points_per_cm
middle_point_depth = 0.4 * points_per_cm
+spine_limit = 1 * points_per_cm
parser = argparse.ArgumentParser(description="build print-ready book PDF")
parser.add_argument("-i", "--input_file", action="append", required=True, help="input PDF file")
parser.add_argument("-o", "--output_file", required=True, help="output PDF file")
parser.add_argument("-p", "--page_range", action="append", help="page range, e.g., '3-end'")
parser.add_argument("-c", "--crop_range", action="append", help="cm crops left, bottom, right, top – e.g., '10,10,10,10'; prefix with ':'-delimited page range to limit effect")
-parser.add_argument("-t", "--symmetry", action="store_true", help="alternate horizontal crops between odd and even pages")
+parser.add_argument("-s", "--symmetry", action="store_true", help="alternate horizontal crops between odd and even pages")
parser.add_argument("-r", "--rotate", dest="rotate", type=int, action="append", help="rotate page of number by 90° (usable multiple times on same page!)")
parser.add_argument("-n", "--nup4", action='store_true', help="puts 4 input pages onto 1 output page")
parser.add_argument("-a", "--analyze", action="store_true", help="in --nup4, print lines identifying spine, page borders")
parser.add_argument("-m", "--margin", type=float, default=0.43, help="print margin for --nup4 in cm (default 0.43)")
-parser.add_argument("-s", "--spine", type=float, default=1, help="on --nup4, cm width of margin hidden in spine (default 1)")
args = parser.parse_args()
page.mediabox.right = a4_width
page.cropbox = page.mediabox
-# determine page crops, zooms
+# determine page crops, zooms, crop symmetry
crops_at_page = [(0,0,0,0)]*len(pages_to_add)
zoom_at_page = [1]*len(pages_to_add)
if args.crop_range:
writer = pypdf.PdfWriter()
if not args.nup4:
+ # single-page output
+ print("building 1-input-page-per-output-page book")
odd_page = True
for i, page in enumerate(pages_to_add):
crop_left, crop_bottom, crop_right, crop_top = crops_at_page[i]
odd_page = not odd_page
else:
+ print("-n: building 4-input-pages-per-output-page book")
n_pages_per_axis = 2
- spine_limit = args.spine * points_per_cm
printable_margin = args.margin * points_per_cm
printable_scale = (a4_width - 2*printable_margin)/a4_width
half_width = a4_width / n_pages_per_axis