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))
# 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:
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(',')]
- 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))
+ 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))
+ 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))
cropped_width = a4_width - crop_left - crop_right
cropped_height = a4_height - crop_bottom - crop_top
zoom = 1
else:
zoom = max(zoom_horizontal, zoom_vertical)
for page_num in range(start_page, end_page):
- crops_at_page[page_num] = (crop_left, crop_bottom, crop_right, crop_top)
+ if args.symmetry and page_num % 2:
+ crops_at_page[page_num] = (crop_right, crop_bottom, crop_left, crop_top)
+ else:
+ crops_at_page[page_num] = (crop_left, crop_bottom, crop_right, crop_top)
zoom_at_page[page_num] = zoom
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]
zoom = zoom_at_page[i]
- if args.symmetry and odd_page:
- page.add_transformation(pypdf.Transformation().translate(tx=-crop_right, ty=-crop_bottom))
- else:
- page.add_transformation(pypdf.Transformation().translate(tx=-crop_left, ty=-crop_bottom))
+ page.add_transformation(pypdf.Transformation().translate(tx=-crop_left, ty=-crop_bottom))
page.add_transformation(pypdf.Transformation().scale(zoom, zoom))
cropped_width = a4_width - crop_left - crop_right
cropped_height = a4_height - crop_bottom - crop_top
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
zoom = zoom_at_page[new_i]
page.add_transformation(pypdf.Transformation().translate(ty=(a4_height / zoom - (a4_height - crop_top))))
if i == 0 or i == 2:
- if args.symmetry:
- page.add_transformation(pypdf.Transformation().translate(tx=-crop_left))
- else:
- page.add_transformation(pypdf.Transformation().translate(tx=-crop_right))
+ page.add_transformation(pypdf.Transformation().translate(tx=-crop_left))
elif i == 1 or i == 3:
- if args.symmetry:
- page.add_transformation(pypdf.Transformation().translate(tx=(a4_width / zoom - (a4_width - crop_left))))
- else:
- page.add_transformation(pypdf.Transformation().translate(tx=(a4_width / zoom - (a4_width - crop_right))))
+ page.add_transformation(pypdf.Transformation().translate(tx=(a4_width / zoom - (a4_width - crop_right))))
page.add_transformation(pypdf.Transformation().scale(zoom * bonus_shrink_factor, zoom * bonus_shrink_factor))
if i == 2 or i == 3:
page.add_transformation(pypdf.Transformation().translate(ty=-2*printable_margin/printable_scale))
projects / misc / blobdiff