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()
return start_page, end_page
pages_to_add = []
opened_files = []
+new_page_num = 0
for i, input_file in enumerate(args.input_file):
file = open(input_file, 'rb')
opened_files += [file]
if args.page_range and len(args.page_range) > i:
range_string = args.page_range[i]
start_page, end_page = parse_page_range(range_string, reader.pages)
- new_page_num = 0
for old_page_num in range(start_page, end_page):
new_page_num += 1
- page = reader.pages[new_page_num]
+ page = reader.pages[old_page_num]
pages_to_add += [page]
- print("-i, -p: read in %s page number %d as new page %d" % (input_file, new_page_num+1, new_page_num))
+ 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:
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:
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
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]
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
- 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
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:
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
projects / misc / blobdiff