+# normalize all pages to portrait A4
+for page in pages_to_add:
+ if "/Rotate" in page:
+ page.rotate(360 - page["/Rotate"])
+ page.mediabox.left = 0
+ page.mediabox.bottom = 0
+ page.mediabox.top = a4_height
+ page.mediabox.right = a4_width
+ page.cropbox = page.mediabox
+
+# 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:
+ for crop_range in args.crop_range:
+ initial_split = crop_range.split(':')
+ if len(initial_split) > 1:
+ page_range = initial_split[0]
+ crops = initial_split[1]
+ else:
+ 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(',')]
+ 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
+ zoom_horizontal = a4_width / (a4_width - crop_left - crop_right)
+ zoom_vertical = a4_height / (a4_height - crop_bottom - crop_top)
+ if (zoom_horizontal > 1 and zoom_vertical < 1) or (zoom_horizontal < 1 and zoom_vertical > 1):
+ print("Error: opposing zooms.")
+ exit(1)
+ elif zoom_horizontal + zoom_vertical > 2:
+ zoom = min(zoom_horizontal, zoom_vertical)
+ else:
+ zoom = max(zoom_horizontal, zoom_vertical)
+ for page_num in range(start_page, end_page):
+ 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