From: Christian Heller <c.heller@plomlompom.de>
Date: Sun, 24 Sep 2023 00:40:23 +0000 (+0200)
Subject: Bookmaker: more expressive output.
X-Git-Url: https://plomlompom.com/repos/%7B%7B%20web_path%20%7D%7D/cards/%7B%7Bcard_id%7D%7D/blog?a=commitdiff_plain;h=5206a79c96848191646c6c73d3af82dceb947fe0;p=misc

Bookmaker: more expressive output.
---

diff --git a/bookmaker.py b/bookmaker.py
index 3737edc..d9bf685 100755
--- a/bookmaker.py
+++ b/bookmaker.py
@@ -51,6 +51,15 @@ for i, input_file in enumerate(args.input_file):
         pages_to_add += [page]
         print("-i, -p: read in %s page number %d as new page %d" % (input_file, old_page_num+1, new_page_num))
 
+# if necessary, pad pages to multiple of 8
+if args.nup4:
+    mod_to_8 = len(pages_to_add) % 8
+    if mod_to_8 > 0:
+        print("-n: number of input pages %d not multiple of 8, padding to that" % len(pages_to_add))
+        for _ in range(8 - mod_to_8):
+            new_page = pypdf.PageObject.create_blank_page(width=a4_width, height=a4_height)
+            pages_to_add += [new_page]
+
 # rotate page canvas
 if args.rotate:
     for rotate in args.rotate:
@@ -83,11 +92,15 @@ if args.crop_range:
           page_range = None
           crops = initial_split[0]
       start_page, end_page = parse_page_range(page_range, pages_to_add)
-      crop_left, crop_bottom, crop_right, crop_top = [float(x) * points_per_cm for x in  crops.split(',')]
+      crop_left_cm, crop_bottom_cm, crop_right_cm, crop_top_cm = [float(x) for x in  crops.split(',')]
+      crop_left = crop_left_cm * points_per_cm
+      crop_bottom = crop_bottom_cm * points_per_cm
+      crop_right = crop_right_cm * points_per_cm
+      crop_top = crop_top_cm * points_per_cm
       if args.symmetry:
-          print("-c, -t: to pages %d to %d applying crops: left %dcm, bottom %dcm, right %dcm, top %dcm (but alternating left and right crop between even and odd pages)" % (start_page + 1, end_page, crop_left, crop_bottom, crop_right, crop_top))
+          print("-c, -t: to pages %d to %d applying crops: left %.2fcm, bottom %.2fcm, right %.2fcm, top %.2fcm (but alternating left and right crop between even and odd pages)" % (start_page + 1, end_page, crop_left_cm, crop_bottom_cm, crop_right_cm, crop_top_cm))
       else:
-          print("-c: to pages %d to %d applying crops: left %dcm, bottom %dcm, right %dcm, top %dcm" % (start_page + 1, end_page, crop_left, crop_bottom, crop_right, crop_top))
+          print("-c: to pages %d to %d applying crops: left %.2fcm, bottom %.2fcm, right %.2fcm, top %.2fcm" % (start_page + 1, end_page, crop_left_cm, crop_bottom_cm, crop_right_cm, crop_top_cm))
       cropped_width  = a4_width - crop_left - crop_right
       cropped_height = a4_height - crop_bottom - crop_top
       zoom = 1
@@ -123,9 +136,13 @@ if not args.nup4:
         page.mediabox.top = cropped_height * zoom
         writer.add_page(page)
         odd_page = not odd_page
+        print("built page number %d (of %d)" % (i+1, len(pages_to_add)))
 
 else:
     print("-n: building 4-input-pages-per-output-page book")
+    print("-m: applying printable-area margin of %.2fcm" % args.margin)
+    if args.analyze:
+        print("-a: drawing page borders, spine limits")
     n_pages_per_axis = 2
     printable_margin = args.margin * points_per_cm
     printable_scale = (a4_width - 2*printable_margin)/a4_width
@@ -137,11 +154,6 @@ else:
     new_page_order = []
     new_i_order = []
     eight_pack = []
-    mod_to_8 = len(pages_to_add) % 8
-    if mod_to_8 > 0:
-        for _ in range(8 - mod_to_8):
-            new_page = pypdf.PageObject.create_blank_page(width=a4_width, height=a4_height)
-            pages_to_add += [new_page]
     i = 0
     n_eights = 0
     for page in pages_to_add:
@@ -211,7 +223,7 @@ else:
         page.add_transformation(pypdf.Transformation().scale(section_scale_factor, section_scale_factor))
         new_page.merge_page(page)
         page_count += 1
-        print("merged page number", page_count)
+        print("merged page number %d (of %d)" % (page_count, len(pages_to_add)))
         i += 1
         if i > 3:
             from reportlab.pdfgen import canvas