a4_width, a4_height = A4
parser = argparse.ArgumentParser(description="build print-ready book PDF")
-parser.add_argument("-i", "--input", dest="input_file", action="append", required=True, help="input PDF file")
-parser.add_argument("-o", "--output", dest="output_file", required=True, help="output PDF file")
-parser.add_argument("-p", "--pages", dest="page_range", action="append", help="page range, e.g., '3-end'")
-parser.add_argument("-c", "--crop", dest="crop_range", action="append", help="crops left, bottom, right, top – e.g., '10,10,10,10'; prefix with ':'-delimited page range to limit effect")
-parser.add_argument("-n", "--nup4", dest="nup4", action='store_true', help="puts 4 input pages onto 1 output page")
-parser.add_argument("-a", "--analyze", dest="analyze", action="store_true", help="print lines identifying spine, page borders")
-parser.add_argument("-t", "--symmetry", dest="symmetry", action="store_true", help="alternate horizontal crops between odd and even pages")
+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="crops left, bottom, right, top – e.g., '10,10,10,10'; prefix with ':'-delimited page range to limit effect")
+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="print lines identifying spine, page borders")
+parser.add_argument("-t", "--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("-m", "--margin", type=float, default=4.3, help="print margin in mm (default 4.3)")
+parser.add_argument("-s", "--spine", type=float, default=10, help="on --nup4, mm width of margin hidden in spine (default 10)")
args = parser.parse_args()
else:
points_per_mm = 2.83465
n_pages_per_axis = 2
- spine_limit = 10
+ spine_limit = args.spine * points_per_mm
printable_margin = args.margin * points_per_mm
printable_scale = (a4_width - 2*printable_margin)/a4_width
half_width = a4_width / n_pages_per_axis