From: Christian Heller <c.heller@plomlompom.de>
Date: Sat, 23 Sep 2023 23:22:21 +0000 (+0200)
Subject: In Bookmaker, add spine size parameter.
X-Git-Url: https://plomlompom.com/repos/%7B%7B%20web_path%20%7D%7D/decks/%7B%7Bdb.prefix%7D%7D/static/blog?a=commitdiff_plain;h=6a37ff4cbeb43c7f609fd5f6a0e442e66fd478ed;p=misc

In Bookmaker, add spine size parameter.
---

diff --git a/bookmaker.py b/bookmaker.py
index 4a7ed31..72ffbfa 100755
--- a/bookmaker.py
+++ b/bookmaker.py
@@ -6,15 +6,16 @@ from reportlab.lib.pagesizes import A4
 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()
 
 
@@ -113,7 +114,7 @@ if not args.nup4:
 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