This fork adds support for C++17. The changes to make this work only apply when the macro APPLY_FIXES_FOR_CPP17 is defined. For CMake, the option BUILD_FOR_CPP17 has been added to enable these changes.

Yoga is an embeddable and performant flexbox layout engine with bindings for multiple languages.

Yoga's main implementation targets C++ 20 with accompanying build logic in CMake. A wrapper is provided to build the main library and run unit tests.

./unit_tests <Debug|Release>

While not required, this script will use ninja if it is installed for faster builds.

Yoga is additionally part of the vcpkg collection of ports maintained by Microsoft and community contributors. If the version is out of date, please create an issue or pull request on the vcpkg repository.

Many of Yoga's tests are automatically generated, using HTML fixtures describing node structure. These are rendered in Chrome to generate an expected layout result for the tree. New fixtures can be added to gentest/fixtures.

<div id="my_test" style="width: 100px; height: 100px; align-items: center;">
  <div style="width: 50px; height: 50px;"></div>
</div>

To generate new tests from added fixtures:

1. Ensure you have yarn classic installed.
2. Run yarn install to install dependencies for the test generator.
3. Run yarn gentest in the yoga directory.

Yoga provides a VSCode "launch.json" configuration which allows debugging unit tests. Simply add your breakpoints, and run "Debug C++ Unit tests (lldb)" (or "Debug C++ Unit tests (vsdbg)" on Windows).