- new_page_order += [eight_pack[3]] # page front, upper left
- new_page_order += [eight_pack[0]] # page front, upper right
- new_page_order += [eight_pack[7]] # page front, lower left
- new_page_order += [eight_pack[4]] # page front, lower right
- new_page_order += [eight_pack[1]] # page back, upper left
- new_page_order += [eight_pack[2]] # page back, upper right
- new_page_order += [eight_pack[5]] # page back, lower left
- new_page_order += [eight_pack[6]] # page back, lower right
- i = 0
- page_count = 0
- front_page = True
- for j, page in enumerate(new_page_order):
- if i == 0:
- new_page = pypdf.PageObject.create_blank_page(width=a4_width, height=a4_height)
-
- # in-section transformations: align pages on top, left-hand pages to left, right-hand to right
- new_i = new_i_order[j]
- crop_left, crop_bottom, crop_right, crop_top = crops_at_page[new_i]
- 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))
- 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().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))
-
- # outer section transformations
- page.add_transformation(pypdf.Transformation().translate(ty=(1-bonus_shrink_factor)*a4_height))
- if i == 0 or i == 1:
- y_section = a4_height
- page.mediabox.bottom = half_height
- page.mediabox.top = a4_height
- if i == 2 or i == 3:
- y_section = 0
- page.mediabox.bottom = 0
- page.mediabox.top = half_height
- if i == 0 or i == 2:
- x_section = 0
- page.mediabox.left = 0
- page.mediabox.right = half_width
- if i == 1 or i == 3:
- page.add_transformation(pypdf.Transformation().translate(tx=(1-bonus_shrink_factor)*a4_width))
- x_section = a4_width
- page.mediabox.left = half_width
- page.mediabox.right = a4_width
- page.add_transformation(pypdf.Transformation().translate(tx=x_section, ty=y_section))
- 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)
- i += 1
- if i > 3:
- from reportlab.pdfgen import canvas
- if args.analyze:
- # borders
- packet = io.BytesIO()
- c = canvas.Canvas(packet, pagesize=A4)
- c.setLineWidth(0.1)
- c.line(0, a4_height, a4_width, a4_height)
- c.line(0, half_height, a4_width, half_height)
- c.line(0, 0, a4_width, 0)
- c.line(0, a4_height, 0, 0)
- c.line(half_width, a4_height, half_width, 0)
- c.line(a4_width, a4_height, a4_width, 0)
- c.save()
- new_pdf = pypdf.PdfReader(packet)
- new_page.merge_page(new_pdf.pages[0])
- printable_offset_x = printable_margin
- printable_offset_y = printable_margin * a4_height / a4_width
- new_page.add_transformation(pypdf.Transformation().scale(printable_scale, printable_scale))
- new_page.add_transformation(pypdf.Transformation().translate(tx=printable_offset_x, ty=printable_offset_y))
- x_left_spine_limit = half_width * bonus_shrink_factor
- x_right_spine_limit = a4_width - x_left_spine_limit
- if args.analyze or front_page:
- packet = io.BytesIO()
- c = canvas.Canvas(packet, pagesize=A4)
- if args.analyze:
- # # spine lines
- c.setLineWidth(0.1)
- c.line(x_left_spine_limit, a4_height, x_left_spine_limit, 0)
- c.line(x_right_spine_limit, a4_height, x_right_spine_limit, 0)
- if front_page:
- c.setLineWidth(0.2)
-
- start_up_left_left_x = x_left_spine_limit - 0.5 * cut_width
- start_up_left_right_x = x_left_spine_limit + 0.5 * cut_width
- middle_point_up_left_y = half_height + middle_point_depth
- end_point_up_left_y = half_height + cut_depth
- c.line(start_up_left_right_x, half_height, x_left_spine_limit, end_point_up_left_y)
- c.line(x_left_spine_limit, end_point_up_left_y, x_left_spine_limit, middle_point_up_left_y)
- c.line(x_left_spine_limit, middle_point_up_left_y, start_up_left_left_x, half_height)
-
- start_down_right_left_x = x_right_spine_limit - 0.5 * cut_width
- start_down_right_right_x = x_right_spine_limit + 0.5 * cut_width
- middle_point_down_right_y = half_height - middle_point_depth
- end_point_down_right_y = half_height - cut_depth
- c.line(start_down_right_left_x, half_height, x_right_spine_limit, end_point_down_right_y)
- c.line(x_right_spine_limit, end_point_down_right_y, x_right_spine_limit, middle_point_down_right_y)
- c.line(x_right_spine_limit, middle_point_down_right_y, start_down_right_right_x, half_height)
-
- if args.analyze or front_page:
- c.save()
- new_pdf = pypdf.PdfReader(packet)
- new_page.merge_page(new_pdf.pages[0])
- writer.add_page(new_page)
- i = 0
- front_page = not front_page
+ return new_page_order, new_i_order
+
+def nup4_inner_page_transform(page, crop, zoom, bonus_shrink_factor, printable_margin, printable_scale, nup4_position):
+ page.add_transformation(pypdf.Transformation().translate(ty=(A4_HEIGHT / zoom - (A4_HEIGHT - crop.top))))
+ if nup4_position == 0 or nup4_position == 2:
+ page.add_transformation(pypdf.Transformation().translate(tx=-crop.left))
+ elif nup4_position == 1 or nup4_position == 3:
+ 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 nup4_position == 2 or nup4_position == 3:
+ page.add_transformation(pypdf.Transformation().translate(ty=-2*printable_margin/printable_scale))
+
+def nup4_outer_page_transform(page, bonus_shrink_factor, nup4_position):
+ page.add_transformation(pypdf.Transformation().translate(ty=(1-bonus_shrink_factor)*A4_HEIGHT))
+ if nup4_position == 0 or nup4_position == 1:
+ y_section = A4_HEIGHT
+ page.mediabox.bottom = A4_HALF_HEIGHT
+ page.mediabox.top = A4_HEIGHT
+ if nup4_position == 2 or nup4_position == 3:
+ y_section = 0
+ page.mediabox.bottom = 0
+ page.mediabox.top = A4_HALF_HEIGHT
+ if nup4_position == 0 or nup4_position == 2:
+ x_section = 0
+ page.mediabox.left = 0
+ page.mediabox.right = A4_HALF_WIDTH
+ if nup4_position == 1 or nup4_position == 3:
+ page.add_transformation(pypdf.Transformation().translate(tx=(1-bonus_shrink_factor)*A4_WIDTH))
+ x_section = A4_WIDTH
+ page.mediabox.left = A4_HALF_WIDTH
+ page.mediabox.right = A4_WIDTH
+ page.add_transformation(pypdf.Transformation().translate(tx=x_section, ty=y_section))
+ page.add_transformation(pypdf.Transformation().scale(QUARTER_SCALE_FACTOR, QUARTER_SCALE_FACTOR))
+
+def ornate_nup4(writer, args_analyze, is_front_page, new_page, printable_margin, printable_scale, bonus_shrink_factor, canvas_class):
+ if args_analyze:
+ # borders
+ packet = io.BytesIO()
+ c = canvas_class(packet, pagesize=A4)
+ c.setLineWidth(0.1)
+ c.line(0, A4_HEIGHT, A4_WIDTH, A4_HEIGHT)
+ c.line(0, A4_HALF_HEIGHT, A4_WIDTH, A4_HALF_HEIGHT)
+ c.line(0, 0, A4_WIDTH, 0)
+ c.line(0, A4_HEIGHT, 0, 0)
+ c.line(A4_HALF_WIDTH, A4_HEIGHT, A4_HALF_WIDTH, 0)
+ c.line(A4_WIDTH, A4_HEIGHT, A4_WIDTH, 0)
+ c.save()
+ new_pdf = pypdf.PdfReader(packet)
+ new_page.merge_page(new_pdf.pages[0])
+ printable_offset_x = printable_margin
+ printable_offset_y = printable_margin * A4_HEIGHT / A4_WIDTH
+ new_page.add_transformation(pypdf.Transformation().scale(printable_scale, printable_scale))
+ new_page.add_transformation(pypdf.Transformation().translate(tx=printable_offset_x, ty=printable_offset_y))
+ x_left_spine_limit = A4_HALF_WIDTH * bonus_shrink_factor
+ x_right_spine_limit = A4_WIDTH - x_left_spine_limit
+ if args_analyze or is_front_page:
+ packet = io.BytesIO()
+ c = canvas_class(packet, pagesize=A4)
+ if args_analyze:
+ # spine lines
+ c.setLineWidth(0.1)
+ c.line(x_left_spine_limit, A4_HEIGHT, x_left_spine_limit, 0)
+ c.line(x_right_spine_limit, A4_HEIGHT, x_right_spine_limit, 0)
+ if is_front_page:
+ c.setLineWidth(0.2)
+ draw_cut(c, x_left_spine_limit, (1))
+ draw_cut(c, x_right_spine_limit, (-1))
+ if args_analyze or is_front_page:
+ c.save()
+ new_pdf = pypdf.PdfReader(packet)
+ new_page.merge_page(new_pdf.pages[0])
+
+def draw_cut(canvas, x_spine_limit, direction):
+ outer_start_x = x_spine_limit - 0.5 * CUT_WIDTH * direction
+ inner_start_x = x_spine_limit + 0.5 * CUT_WIDTH * direction
+ middle_point_y = A4_HALF_HEIGHT + MIDDLE_POINT_DEPTH * direction
+ end_point_y = A4_HALF_HEIGHT + CUT_DEPTH * direction
+ canvas.line(inner_start_x, A4_HALF_HEIGHT, x_spine_limit, end_point_y)
+ canvas.line(x_spine_limit, end_point_y, x_spine_limit, middle_point_y)
+ canvas.line(x_spine_limit, middle_point_y, outer_start_x, A4_HALF_HEIGHT)
+
+def main():
+ args = parse_args()
+ validate_inputs_first_pass(args)
+ if args.nup4:
+ try:
+ from reportlab.pdfgen.canvas import Canvas
+ except ImportError:
+ raise HandledException("-n: need reportlab.pdfgen.canvas installed for --nup4")
+ pages_to_add, opened_files = read_inputs_to_pagelist(args.input_file, args.page_range)
+ validate_inputs_second_pass(args, pages_to_add)
+ rotate_pages(args.rotate_page, pages_to_add)
+ if args.nup4:
+ pad_pages_to_multiple_of_8(pages_to_add)
+ normalize_pages_to_A4(pages_to_add)
+ crop_at_page, zoom_at_page = collect_per_page_crops_and_zooms(args.crops, args.symmetry, pages_to_add)
+ writer = pypdf.PdfWriter()
+ if args.nup4:
+ build_nup4_output(writer, pages_to_add, crop_at_page, zoom_at_page, args.print_margin, args.analyze, Canvas)
+ else:
+ build_single_pages_output(writer, pages_to_add, crop_at_page, zoom_at_page)
+ for file in opened_files:
+ file.close()
+ with open(args.output_file, 'wb') as output_file:
+ writer.write(output_file)
+