pkg_imposition

Complete port of the java libIMPOSITION library.

Orienting the original bleed values array:

[
index 0: TOP    (T),
index 1: RIGHT  (R),
index 2: BOTTOM (B) and
index 3: LEFT   (L).
]

Results in:

Orientate	Original	Oriented	Bleed values
NORTH:	[T, R, B, L]	[T, R, B, L]	(no change)
EAST:	[T, R, B, L]	[R, B, L, T]	(first element to tail)
SOUTH:	[T, R, B, L]	[B, L, T, R]	(first 2 elements to tail)
WEST:	[T, R, B, L]	[L, T, R, B]	(first 3 elements to tail)

Coordinate system

Because of the incompatibility of the coordinate systems used internally and that of external softwares, this library uses a coordinate system that has its origin at the bottom left corner.

A bottom-left origin is te most natural choise for describing imposition layouts, because it conforms to the current print industry standard.

The SVG coordinate system defaults to a top left origin, And the default, and preferable, origin of PDF files is bottom left ¹.

This means that (Imposition) output generators should take care of proper conversion to the target coordinate system.

---

¹ Although it is possible to create PDF files with a topdown coordinate system , this can lead to various problems. Querying block coordinates with PDFlib for instance will allways return values relative to the original bottom-left coordinate system.

"Note that the topdown option is not taken into account when querying Block coordinates." (PDFlib documentation)

Changelog

1.4.0 - 2025-10-07

Removed

• Removed mustConvert from ParameterKey enum (was not used anywhere).

Added

• Added offset x/y to ImpositionParameters to shift the content on the page.
• Generation of crop marks in svg files.

Changed

• Crease marks in pdf 50% black, cut marks in pdf 100% black.

1.3.42 - 2025-10-03

Changed

• Version bump from 1.3.41 to 1.3.42 (build_runner -> 2.9.0 (was 2.8.0)).

1.3.41 - 2025-09-22

Changed

• Version bump from 1.3.40 to 1.3.41 (build_runner -> 2.8.0 (was 2.7.1)).

1.3.40 - 2025-09-16

Changed

• Version bump from 1.3.39 to 1.3.40 (xml -> 6.6.1 (was 6.5.0)).

1.3.39 - 2025-09-04

Changed

• Version bump from 1.3.38 to 1.3.39 (build_runner -> 2.7.1 (was 2.7.2)).

1.3.38 - 2025-09-04

Changed

• Version bump from 1.3.37 to 1.3.38 (build_runner -> 2.7.2 (was 2.7.1)).

1.3.37 - 2025-09-03

Changed

• Version bump from 1.3.36 to 1.3.37 (build_runner -> 2.7.1 (was 2.7.0)).

1.3.36 - 2025-09-01

Changed

• Version bump from 1.3.35 to 1.3.36 (build_runner -> 2.7.0 (was 2.6.0)).

1.3.35 - 2025-08-08

Changed

• Version bump from 1.3.34 to 1.3.35 (build_runner -> 2.6.0 (was 2.6.1)).

1.3.34 - 2025-08-08

Changed

• Version bump from 1.3.33 to 1.3.34 (build_runner -> 2.6.1 (was 2.6.0)).

1.3.33 - 2025-07-28

Changed

• Version bump from 1.3.32 to 1.3.33 (build_runner -> 2.6.0 (was 2.5.4)).

1.3.32 - 2025-07-23

Changed

• Version bump from 1.3.31 to 1.3.32 (test -> 1.26.3 (was 1.26.2)).

1.3.31 - 2025-07-16

Changed

• Orientate.next() to rotate the orientation to the next value (north becomes east).

1.3.30 - 2025-06-24

Changed

• Version bump from 1.3.29 to 1.3.30 (build_runner -> 2.5.4 (was 2.5.3)).

1.3.29 - 2025-06-23

Changed

• Version bump from 1.3.28 to 1.3.29 (build_runner -> 2.5.3 (was 2.5.2)).

1.3.28 - 2025-06-18

Changed

• Version bump from 1.3.27 to 1.3.28 (build_runner -> 2.5.2 (was 2.4.12)).

1.3.27 - 2025-06-18

Changed

• Version bump from 1.3.26 to 1.3.27 (build_runner -> 2.4.12 (was 2.5.1)).

1.3.26 - 2025-06-17

Changed

• Version bump from 1.3.25 to 1.3.26 (build_runner -> 2.5.1 (was 2.5.0)).

1.3.25 - 2025-06-17

Changed

• Version bump from 1.3.24 to 1.3.25 (build_runner -> 2.5.0 (was 2.4.15)).

1.3.24 - 2025-05-22

Changed

• Version bump from 1.3.23 to 1.3.24 (lints -> 6.0.0 (was 5.1.1)).

1.3.23 - 2025-05-22

Changed

• Version bump from 1.3.22 to 1.3.23 (test -> 1.26.2 (was 1.26.1)).

1.3.22 - 2025-05-20

Changed

• Version bump from 1.3.21 to 1.3.22 (test -> 1.26.1 (was 1.26.0)).

1.3.21 - 2025-05-13

Changed

• Version bump from 1.3.20 to 1.3.21 (test -> 1.26.0 (was 1.25.15)).

1.3.20 - 2025-04-02

Changed

• Version bump from 1.3.19 to 1.3.20 (collection -> 1.19.1 (was 1.19.0)).

1.3.19 - 2025-04-02

Changed

• Version bump from 1.3.18 to 1.3.19 (test -> 1.25.15 (was 1.25.14)).

1.3.18 - 2025-02-28

Changed

• Version bump from 1.3.17 to 1.3.18 (build_runner -> 2.4.15 (was 2.4.14)).

1.3.17 - 2024-12-23

Changed

• Version bump from 1.3.16 to 1.3.17 (collection -> 1.19.0 (was 1.19.1)).

1.3.16 - 2024-12-23

Changed

• Version bump from 1.3.15 to 1.3.16 (collection -> 1.19.1 (was 1.19.0)).

1.3.15 - 2024-12-23

Changed

• Version bump from 1.3.14 to 1.3.15 (test -> 1.25.14 (was 1.25.13)).

1.3.14 - 2024-12-23

Changed

• Version bump from 1.3.13 to 1.3.14 (lints -> 5.1.1 (was 5.1.0)).

1.3.13 - 2024-12-19

Changed

• Version bump from 1.3.12 to 1.3.13 (Support Apple silicon (arm64)).

1.3.12 - 2024-12-19

Changed

• Version bump from 1.3.11 to 1.3.12 (collection -> 1.19.0 (was 1.19.1)).

1.3.11 - 2024-12-19

Changed

• Version bump from 1.3.10 to 1.3.11 (collection -> 1.19.1 (was 1.19.0)).

1.3.10 - 2024-12-19

Changed

• Version bump from 1.3.9 to 1.3.10 (build_runner -> 2.4.14 (was 2.4.13)).

1.3.9 - 2024-12-18

Changed

• Version bump from 1.3.8 to 1.3.9 (test -> 1.25.13 (was 1.25.12)).

1.3.8 - 2024-12-12

Changed

• Version bump from 1.3.7 to 1.3.8 (lints -> 5.1.0 (was 5.0.0)).

1.3.7 - 2024-12-12

Changed

• Version bump from 1.3.6 to 1.3.7 (collection -> 1.19.0 (was 1.18.0)).

1.3.6 - 2024-12-05

Changed

• Version bump from 1.3.5 to 1.3.6 (test -> 1.25.12 (was 1.25.11)).

1.3.5 - 2024-12-04

Changed

• Version bump from 1.3.4 to 1.3.5 (test -> 1.25.11 (was 1.25.10)).

1.3.4 - 2024-12-03

Changed

• Version bump from 1.3.3 to 1.3.4 (test -> 1.25.10 (was 1.25.9)).

1.3.3 - 2024-11-27

Changed

• Version bump from 1.3.2 to 1.3.3 (test -> 1.25.9 (was 1.25.8)).

1.3.2 - 2024-11-22

Changed

• Version bump from 1.3.1 to 1.3.2 (equatable -> 2.0.7 (was 2.0.6)).

1.3.1 - 2024-08-22

Changed

• Version bump from 1.3.0 to 1.3.1 (SDK update 3.5.1).

1.3.0 - 2024-08-16

Fixed

• Keep enums in a separate package (pkg_imposition_enums).

1.2.5 - 2024-08-09

Changed

• Removed get_it dependency.

1.2.4 - 2024-04-03

Changed

• Parse Imposition string from pdf metadata with pkg_pdfio before trying pkg_pdflib.

1.2.3 - 2024-02-07

Removed

• copy_with_extension_gen dependency.

1.2.2 - 2024-02-01

Changed

• Version bump from 1.2.1 to 1.2.2 (Resolve package version confusions).

1.2.1 - 2024-02-01

Changed

• Version bump from 1.2.0 to 1.2.1.

1.2.0 - 2023-12-04

Changed

• Allow floats in page dimensions (mostly in toString methods).

1.1.1 - 2023-10-16

Added

• collection dependency.

Removed

• quiver dependency.

1.1.0 - 2023-07-06

Added

• pkg_imposition_enums.dart when using the enums only (without dependencies on pdflib).

1.0.22 - 2023-07-06

Fixed

• Hyphens and underscores in enums.

1.0.21 - 2023-06-05

Changed

• From flutter_test to pure-dart test.

1.0.20 - 2023-03-29

Changed

• test with flutter because of dev dependencies.

1.0.19 - 2023-02-09

Changed

• Version bump from 1.0.18 to 1.0.19 (Version confusion after compiler bug chaos).

1.0.18 - 2023-01-31

Changed

• Version bump from 1.0.17 to 1.0.18.

1.0.17 - 2023-01-31

Changed

• Version bump from 1.0.16 to 1.0.17.

1.0.16 - 2022-12-27

Changed

• Version bump from 1.0.15 to 1.0.16.

1.0.15 - 2022-12-22

Changed

• Version bump from 1.0.14 to 1.0.15.

1.0.14 - 2022-12-22

Changed

• Version bump from 1.0.13 to 1.0.14 (Recompile due to installer optimizations).

1.0.13 - 2022-11-29

Added

• Use kPdflibCompatibilityVersion constant.

1.0.12 - 2022-10-31

Added

• OutputDevice.grootformaat.

1.0.11 - 2022-10-21

Added

• ImpositionParameters.fromFile to read param from a pdf template.

1.0.10 - 2022-10-19

Changed

• Removed all print statements for logging.

1.0.9 - 2022-10-11

Changed

• Version bump from 1.0.8 to 1.0.9 (Recompile due to wrong GetIt.instance syntax.).

1.0.8 - 2022-10-05

Changed

• Version bump from 1.0.7 to 1.0.8 (fixed pdflib searchpath macos crash).

1.0.7 - 2022-10-01

Changed

• Version bump from 1.0.6 to 1.0.7 (pkg_pdflib bundle macos dylib).

1.0.6 - 2022-09-30

Changed

• Made pure dart.

1.0.5 - 2022-09-29

Changed

• Version bump from 1.0.4 to 1.0.5 (dependencies upgraded).

1.0.4 - 2022-08-31

Changed

• removed various finals due to new linter rules.

1.0.3 - 2022-08-30

Added

• vo cascade operator test to imposition_parameters_test.

1.0.2 - 2022-08-29

Added

• Setters to ImpositionParameters.

1.0.1 - 2022-08-29

Changed

• README.md.

1.0.0 - 2022-08-29

Changed

• Port from java to dart by @ruud.

0.1.0 - 2022-07-25

Changed

• First minor version.

0.0.1+2 - 2022-06-09

Changed

• Unknown changes.

0.0.1 - 2022-03-17

Changed

• Initial version.