Features
Make UI development easier with 30+ widgets, anti-aliasing, animations, multi language, Arabic and Persian text, encoder and keypad usage, etc
Requirements
- 16,32 or 64 bit microcontroller or processor
- > 16 MHz speed is recommended
- Flash/ROM: > 64 kB (180 kB is recommended)
- RAM: 8 kB (24 kB is recommended)
- 1 Frame buffer: in MCU, external RAM, or display controller
- Graphics buffer for LVGL: > “Horizontal resolution” pixels (1/10 “Screen size” is recommended)
- C99 or newer compiler
- Basic C (or C++) knowledge: pointers, structs, callbacks
Free with MIT license
- Open source
- Written in C (C++ compatible)
- Hosted on GitHub
- Free to use under MIT license
Widgets
- More than 30 powerful, fully customizable widgets
- Button, Bar, Slider, Chart, Text area, Keyboard and so on
Display
- Any resolution: from small monochrome displays to Full HD monitors
- Simple interface: one driver function to copy the rendered image to your display
- GPU support
- Multi display support
- Custom color format support
- Flexible buffering modes for high quality, great performance and low memory usage
Input devices
- Multiple input device for the same screen
- Simple interface: one driver function to get the state of an input device
- Drag, scroll objects
- Recognize gestures
- Keypad and encoder support for for touchpad-less navigation
Drawing feature
- Anti-aliasing
- Rectangle with radius
- Border with radius
- Shadow
- Line
- Arc
- Polygon
- Masking
Input devices
- Multiple input device for the same screen
- Simple interface: one driver function to get the state of an input device
- Drag, scroll objects
- Recognize gestures
- Keypad and encoder support for for touchpad-less navigation
Drawing feature
- Anti-aliasing
- Rectangle with radius
- Border with radius
- Shadow
- Line
- Arc
- Polygon
- Masking
Text features
- UTF-8 support
- Anti-aliasing
- Kerning
- Word wrap and auto texts scrolling
- BiDirectional text support (mix RTL and LTR)
- Arabic and Persian support
- Font compression
- Subpixel rendering
- Online and offline font converter
- Interface for custom font engine
- FreeType integration example
- Multi language support
Image feature
- Varius color formats: RGB, ARGB, Chroma keyed, indexed, alpha only
- Real time recoloring of images
- Real time zoom and rotation
- Images can in flash or files (e.g. SD card)
- Online and offline image converter
- Image decoder inerface for caching
- PNG integration example
Styles
- Set widgets appearance
- Cascade styles (like in CSS)
- Reuse the styles in multiple widgets
- Local styles for simple changes
- Themes to give a default appearance
- Transitions (animations) on state change
Binding
- Binding to Micropython
- Online simulator
- Support ESP32