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CHANGELOG.md

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Changelog

Version 0.12.1

  • docs: update README.md with the new features

Version 0.12.0

  • feat: divide each frame into multiple rectangles, compare rectangle with the same rectangle in the previous frame and update only the changed ones
  • feat: add two throttling mechanisms to avoid sending too many frames to the display, one based on total bandwidth of all draw commands of all HeadlessWidgets and the other based on set fps of a particular HeadlessWidget
  • feat: add show_update_regions property to HeadlessWidget to show the regions that are updated in each frame as a debug feature

Version 0.11.1

  • fix: change type of kwargs in HeadlessWidget.__init__ to object

Version 0.11.0

  • refactor: drop all the fps handling and render scheduling logic in favor of Canvas's Callback instruction which gets called only when new drawing is done

Version 0.10.1

  • chore: set dependencies for [test] extra

Version 0.10.0

  • chore: migrate from poetry to uv for the sake of improving performance and dealing with conflicting sub-dependencies
  • refactor: make it ready to be used for local widgets

Version 0.9.8

  • fix: an error in data slicing causing failure when HDMI display is connected

Version 0.9.7

  • fix: slice the data in case it exceeds the size of the display

Version 0.9.6

  • fix: make it compatible with kivy 3

Version 0.9.5

  • refactor: set minimum version of kivy to 2.1.0 (used to be 2.3.0)

Version 0.9.4

  • refactor: update snapshot fixture with latest changes

Version 0.9.3

  • refactor: migrate from uint16 to uint8 as each channel of the RGB image is a single byte
  • feat: add alpha channel ... yet again
  • feat: add a demo app based on the code provided here
  • fix: the order of width and height in different places so that it works when the screen is not a square - closes #12, closes #13

Version 0.9.2

  • fix: apply rotations and flips and drop alpha channel on data before storing it in raw_data

Version 0.9.1

  • fix: consider alpha channel in the data stored in raw_data field of HeadlessWidget

Version 0.9.0

  • refactor: remove all features specific to Raspberry Pi, now it is a general headless Kivy library suitable for different platforms and test environments
  • build: rename project to headless-kivy as it is not specific to Raspberry Pi anymore
  • build: update repository to https://github.com/sassanh/headless-kivy

Version 0.8.2

  • refactor: drop code for positioning the window on the screen

Version 0.8.1

  • refactor: drop is_test_environment, the code using headless kivy should be responsible for setting up the environment so that it can fully customize the configuration

Version 0.8.0

  • refactor: use str_to_bool of python-strtobool instead of strtobool of distutils
  • feat: add snapshot fixture

Version 0.7.4

  • feat: add rotation, flip_horizontal, and flip_vertical parameters to SetupHeadlessConfig to allow configuration of the display orientation

Version 0.7.3

  • feat: configurable rotation and flip parameters
  • feat: let the user render a splash screen before the first frame is ready to be rendered, if not provided, it renders a black screen

Version 0.7.2

  • fix: revert numpy data structure storing display data to uint16 as 2 bytes are used per pixel

Version 0.7.1

  • fix: don't interact with window system when running headless for tests

Version 0.7.0

  • feat: render relevant parts of the screen only
  • feat: keep a copy of the raw data transferred to the display in config._display.raw_data

Version 0.6.1

  • chore: GitHub workflow to publish pushes on main branch to PyPI
  • chore: create GitHub release for main branch in GitHub workflows

Version 0.6.0

  • refactor: HeadlessWidget is not a singleton anymore, config migrated to config module
  • refactor: initializing display and config is now done in setup_headless_kivy
  • feat: class method get_instance to get the closest parent instance of type HeadlessWidget

Version 0.5.12

  • fix: make sure kivy.core.window is loaded in setup_headless to avoid segmentation fault

Version 0.5.11

  • docs: remove instructions to deal with legacy Raspbian from README.md

Version 0.5.10

  • feat: ensure setup_headless is called before instantiating HeadlessWidget
  • feat: periodically write snapshots of the screen to filesystem in debug mode for remote debugging
  • refactor: fix pyright and ruff errors and warnings by faking modules
  • refactor: split __init__.py into several files

Version 0.5.9

  • refactor: make synchronous_clock enabled by default

Version 0.5.8

  • refactor: avoid unnecessary scheduled calls of render_on_display
  • refactor: make automatic_fps enabled by default

Version 0.5.7

  • feat: cancel clock event when kivy app stops

Version 0.5.6

  • fix: ignore data hash and render a single frame after resume

Version 0.5.3

  • feat: add clear_at_exit setting and pause and resume methods

Version 0.5.2

  • chore: simplify pyproject.toml and the setup instructions

Version 0.5.1

  • fix: incorrect local import path

Version 0.5.0

  • chore: drop support for python 3.9 and 3.10

Version 0.4.2

  • chore: migrate from poetry groups to poetry extras

Version 0.4.1

  • chore: update development installation command in README.md

Version 0.4.0

  • chore: add dev extra, remove watchdog and cython

Version 0.3.7

  • chore: update typing-extensions

Version 0.3.6

Version 0.3.5

  • chore: add CHANGELOG.md

Version 0.3.4

  • feat: add stencil support in HeadlessWidget's framebuffer

Version 0.3.3

  • chore: update packages
  • docs: add icons in README.md
  • chore: drop unused dependencies

Version 0.3.0

  • refactor: make some methods of HeadlessWidget class methods
  • docs: update the README.md file
  • chore: add license file
  • chore: update lockfile

Version 0.2.2

  • chore: github action for building wheels

Version 0.2.1

  • fix: make adafruit-circuitpython-rgb-display conditionally install only on raspberry pi

Version 0.2.0

  • chore: remove demo files
  • feat: keyboard navigation for pagination demo
  • feat: add typings and docs
  • docs: add pagination demo
  • chore: update poetry packages and config
  • feat: add activate_low_fps_mode and activate_high_fps_mode to manually set fps when needed
  • feat: add logging and improve fps handler
  • docs: add sdl installation instructions and a reference to demo.py in README.md
  • feat: drop Kivy FPS to min_fps when the user interface is idle
  • feat: Add default values for setup_headless() based on environment variables
  • docs: add demo.py to show all the features in action
  • docs: add README.md
  • feat: avoid sending data to the lcd when the current frame is the same as the last one
  • feat: add double buffering
  • feat: add synchronous mode to save CPU time by avoiding Kivy from rendering frames when last frame is not yet rendered on the lcd

Version 0.1.0

  • feat: implement Headless widget to render content on SPI display without needing a display server/window manager