EFL - A UI Toolkit Designed for the Embedded World
summary
EFL is a C UI toolkit aimed at constrained devices with claimed stable API/ABI, low memory use and GPU-or-fallback rendering; recent release shows 105 contributors and ~3,300 commits (50k total). Key engineering: string sharing and inline lists to cut memory and speed comparisons, copy‑on‑write and magic checks to reduce crashes, a scene graph with partial updates plus OpenGL (Vulkan coming) for smooth rendering, and a new Eo object system with safer pointers, generated bindings/docs, CI/Coverity and real deployments on Tizen, fridges and watches.
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chapters (17)
- 0:00Introduction to EFL
- 2:05EFL for Embedded Devices
- 3:42Development Process
- 5:59Core Libraries
- 11:02Binary Serialization
- 12:33Main Loop and Networking
- 14:48Canvas and Rendering
- 17:18Theming and UI Separation
- 19:33Widgets and Localization
- 24:27Object System Evolution
- 28:36Safety and Debugging
- 31:00API Definition Language
- 34:55Namespaces and Documentation
- 37:31Developer Tools
- 39:24Performance and Use Cases
- 41:36Terminology Terminal
- 46:15Q&A and Conclusion
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