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Changelog

This application is the main (and at least for the MVP the only) backend of the blackpin messenger. It is written in Java / Spring Boot.

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

  • ...

[3.0.0] - 2025-04-04

Added

  • Added a module-info.java so that the lib can be used as a Java 9 module

Changed

  • Due to the new module-info.java the lib is now compiled with Java 9 and this version can no longer be used with Java 8. Imho this shouldn't be a problem in 2025.
  • Because of the shift towards modules I reordered the packages of the library (firstly for having a clear API which can be exported from the module and secondly I untangled some dependency cycles between packages).
  • This change actually causes a breaking API change (since the package of the thrown exceptions changed) and alas ... we have a new major release.

Removed

  • Internally the library no longer uses lombok. This has no effect on its clients

[2.0.1] - 2023-07-31

Added

  • QrGenerator has a new method noAlpha() which strips off the alpha channel from all selected colors.

[2.0.0] - 2023-06-11

Added

  • It is now possible to render the three markers of the generated QR codes in different styles. The markers of the QR code can now be drawn as
    • rectangles
    • rectangles with rounded corners
    • circles
    • 'raindrops' appearing to fall inward
    • 'raindrops' appearing to fall outward
    • rectangles with one rounded edge at the outer corner
    • rectangles with one rounded edge at the inner corner
    • rectangles with rounded edge except one sharp edge at the outer corner
    • rectangles with rounded edge except one sharp edge at the inner corner

Changed

  • When giving a color as parameter you can now choose between ARGB, RGBA, RGB, HSLA and HSL
  • It is now possible to select extra colors for the three QR code's markers. The inner and the outer parts of the markers can be rendered with different colors (if requested).
  • Added new style options for generated QR codes. The "pixels" of the QR code can now also be
    • rectangles with rounded corners or
    • they can be merged in a way
      • to form rows or columns
      • to form snake-like structures
      • to form structures like water (with adhesion)

Removed

  • the colors to be used can no longer be given as raw integer values. Instead you have to feed the withColors(...) methods whith instances of ArgbValue, RgbaValue, RgbValue, HslaValue or HslValue

[1.1.1] - 2023-05-09

Fixed

  • Classes ArgbValue, RgbValue and ImgParameter had no real 'equals()' method. Fixed this by introducing lombok

[1.1.0] - 2022-06-07

Added

  • Added new configuration option for generated QR codes: the "pixels" of the QR code can now also be dots
  • Added another option to draw "smaller (rectangular) pixels" so that a thin grid appears in between

Changed

  • Changed name of the enum to selsect generated file format from ImageType to ImageFileType

[1.0.0] - 2022-05-17

Added

  • Started writing unit tests
  • Added README.md
  • Added javadoc

[0.9.5] - 2022-05-10

Added

  • Implemented wrapper around ZXing for generating QR codes
  • wrapper can be reused (for multiple payloads)
  • generated QR code can be configured wth respect to
    • size of generate image
    • file type of produced image (BMP, PNG, JPG, GIF)
    • colors of "on" and "off" pixels
    • error correction level
    • character encoding of encoded payload
    • margin around the QR code (to help scanners)
  • generator can place a logo centered over the QR code