Logo
  • Introduction
    • Key features
    • Requirements
    • License
    • Repository layout
    • Release policy
      • Release cycle
      • Branches
      • Changelog
      • Version support
    • FAQ
      • Where can I ask questions?
      • Is my MCU/hardware supported?
      • Is my display supported?
      • LVGL doesn't start, randomly crashes or nothing is drawn on the display. What can be the problem?
      • My display driver is not called. What have I missed?
      • Why is the display driver called only once? Only the upper part of the display is refreshed.
      • Why do I see only garbage on the screen?
      • Why do I see nonsense colors on the screen?
      • How to speed up my UI?
      • How to reduce flash/ROM usage?
      • How to reduce the RAM usage
      • How to work with an operating system?
  • Examples
    • Get started
      • A very simple hello world label
      • A button with a label and react on click event
      • Create styles from scratch for buttons
      • Create a slider and write its value on a label
    • Styles
      • Size styles
      • Background styles
      • Border styles
      • Outline styles
      • Shadow styles
      • Image styles
      • Arc styles
      • Text styles
      • Line styles
      • Transition
      • Using multiple styles
      • Local styles
      • Add styles to parts and states
      • Extending the current theme
      • Opacity and Transformations
      • Metallic knob with conic gradient
      • Radial gradient as background
      • Gradients for button background
    • Animations
      • Start animation on an event
      • Playback animation
      • Cubic Bezier animation
      • Animation timeline
    • Events
      • Button click event
      • Handle multiple events
      • Event bubbling
      • Draw event
    • Layouts
      • Flex
        • A simple row and a column layout with flexbox
        • Arrange items in rows with wrap and even spacing
        • Demonstrate flex grow
        • Demonstrate flex grow.
        • Demonstrate column and row gap style properties
        • RTL base direction changes order of the items
      • Grid
        • A simple grid
        • Demonstrate cell placement and span
        • Demonstrate grid's -free unit-
        • Demonstrate track placement
        • Demonstrate column and row gap
        • Demonstrate RTL direction on grid
    • Scrolling
      • Nested scrolling
      • Snapping
      • Floating button
      • Styling the scrollbars
      • Right to left scrolling
      • Translate on scroll
    • Widgets
      • Base object
        • Base objects with custom styles
        • Make an object draggable
      • Arc
        • Simple Arc
        • Loader with Arc
      • Bar
        • Simple Bar
        • Styling a bar
        • Temperature meter
        • Stripe pattern and range value
        • Bar with LTR and RTL base direction
        • Custom drawer to show the current value
        • Bar with opposite direction
      • Button
      • Button matrix
      • Calendar
        • Calendar with header
        • Chinese calendar
      • Canvas
        • Drawing on the Canvas and rotate
        • Transparent Canvas with chroma keying
        • Draw a rectangle to the canvas
        • Draw a label to the canvas
        • Draw an arc to the canvas
        • Draw an image to the canvas
        • Draw a line to the canvas
        • Draw a vector graphic to the canvas
      • Chart
        • Line Chart
        • Axis ticks and labels with scrolling
        • Show the value of the pressed points
        • Recolor bars based on their value
        • Faded area line chart with custom division lines
        • Show cursor on the clicked point
        • Scatter chart
        • Circular line chart with gap
      • Checkbox
        • Simple Checkboxes
        • Checkboxes as radio buttons
      • Colorwheel
      • Dropdown
        • Simple Drop down list
        • Drop down in four directions
        • Menu
      • Image
      • Image button
        • Simple Image button
      • Keyboard
        • Keyboard with text area
        • Keyboard with custom map
      • Label
        • Line wrap, recoloring and scrolling
        • Text shadow
        • Show LTR, RTL and Chinese texts
        • Draw label with gradient color
        • Customize circular scrolling animation
      • LED
        • LED with custom style
      • Line
        • Simple Line
      • List
        • Simple List
        • Sorting a List using up and down buttons
      • Menu
        • Simple Menu
        • Simple Menu with root btn
        • Simple Menu with custom header
        • Simple Menu with floating btn to add new menu page
        • Complex Menu
      • Meter
      • Message box
        • Simple Message box
        • Scrolling and styled Message box
      • Roller
        • Simple Roller
        • Styling the roller
        • add fade mask to roller
      • Scale
      • Slider
        • Simple Slider
        • Slider with custom style
        • Slider with extended drawer
        • Slider with opposite direction
      • Span
        • Span with custom styles
      • Spinbox
        • Simple Spinbox
      • Spinner
        • Simple spinner
      • Switch
        • Simple Switch
      • Table
        • Simple table
        • Lightweighted list from table
      • Tabview
        • Simple Tabview
        • Tabs on the left, styling and no scrolling
      • Textarea
        • Simple Text area
        • Text area with password field
        • Text auto-formatting
      • Tileview
        • Tileview with content
      • Window
        • Simple window
  • Get started
    • Quick overview
      • Get started in a simulator
      • Add LVGL into your project
      • Learn the basics
        • Widgets
        • Events
        • Parts
        • States
        • Styles
        • Themes
      • Examples
      • A very simple hello world label
      • A button with a label and react on click event
      • Create styles from scratch for buttons
      • Create a slider and write its value on a label
      • MicroPython
  • Integration and Drivers
    • Build systems
      • make
      • cmake
        • Overview
    • Chip vendors
      • Espressif (ESP32 Chip Series)
        • LVGL Demo Projects for ESP32
        • Using LVGL in Your ESP-IDF Project
        • Support for Display and Touch Drivers
      • NXP
        • Creating new project with LVGL
        • HW acceleration for NXP iMX RT platforms
      • Renesas
        • Dave2D
        • GLCDC
        • Supported boards
        • Get started with the Renesas ecosystem
        • Modify the project
        • Support
      • STM32
        • Including LVGL in a Project
        • Bare Metal Example
        • FreeRTOS Example
    • Drivers
      • Display
        • Linux Framebuffer Driver
        • Generic MIPI DCS compatible LCD Controller driver
        • ILI9341 LCD Controller driver
        • Step-by-step Guide: How to use the LVGL v9 LCD drivers with STM32 devices
        • ST7735 LCD Controller driver
        • ST7789 LCD Controller driver
        • ST7796 LCD Controller driver
        • Renesas GLCDC
      • Touchpad
        • FT6X36
        • Linux Evdev Driver
      • Libinput Driver
        • Overview
        • Prerequisites
        • Configuring the driver
        • Usage
      • X11 Display/Inputs driver
        • Overview
        • Prerequisites
        • Configure X11 driver
        • Usage
      • Windows Display/Inputs driver
        • Overview
        • Prerequisites
        • Configure Windows driver
        • Usage
      • OpenGL ES Display/Inputs driver
        • Overview
        • Prerequisites
        • Configure OpenGL driver
        • Basic usage
        • Advanced usage
      • Wayland Display/Inputs driver
        • Overview
        • Dependencies
        • Configuring the wayland driver
        • Example
        • Usage
        • Building the wayland driver
        • Current state and objectives
        • Bug reports
    • Frameworks
      • Arduino
        • Get the LVGL Arduino library
        • Set up drivers
        • Configure LVGL
        • Initialize and run LVGL
        • Use the examples and demos
        • Debugging and logging
      • Platformio
      • Tasmota and berry
        • What is Tasmota?
        • What is Berry?
        • Why LVGL + Tasmota + Berry?
        • So what does it look like?
        • How can I use it?
        • Where can I find more information?
    • IDEs
      • Simulator on PC
        • Select an IDE
        • Built-in drivers
      • MDK
    • (RT)OS
      • NuttX RTOS
        • What is NuttX?
        • Why NuttX + LVGL?
        • How to get started with NuttX and LVGL?
        • Where can I find more information?
      • RT-Thread RTOS
        • What is RT-Thread?
        • How to run LVGL on RT-Thread?
      • FreeRTOS
      • Zephyr
        • What is Zephyr?
        • How to run LVGL on Zephyr?
        • Leveraging Zephyr Features
        • Where can I find more information?
      • PX5 RTOS
      • MQX RTOS
      • QNX
        • What is QNX?
        • How to run LVGL on QNX?
    • Bindings
      • MicroPython
        • What is MicroPython?
        • Why MicroPython + LVGL?
        • So what does it look like?
        • How can I use it?
        • Where can I find more information?
        • The MicroPython Binding is auto generated!
      • Cpp
      • PikaScript
        • What is PikaScript ?
        • Why PikaScript + LVGL ?
        • So how does it look like?
        • How does it work?
        • How can I use it?
      • JavaScript
        • Table of Contents
        • Features
        • Demo
        • Building
        • Components
        • Font
        • Animation
        • Style
        • JSAPI
        • Thanks
      • Output API as JSON data
  • Porting
    • Set up a project
      • Get the library
      • Add lvgl to your project
        • Automatically add files
        • Make and CMake
        • Other platforms and tools
        • Demos and Examples
      • Configuration file
      • Initialization
    • Display interface
      • Basic setup
        • flush_cb
        • Draw buffers
      • Advanced options
        • Resolution
        • Flush wait callback
        • Rotation
        • Color format
        • Swap endianness
        • Monochrome Displays
        • User data
        • Decoupling the display refresh timer
        • Force refreshing
      • Events
      • Further reading
      • API
    • Input device interface
      • Types of input devices
        • Touchpad, mouse or any pointer
        • Keypad or keyboard
        • Encoder
        • Button
      • Other features
        • Parameters
        • Feedback
        • Associating with a display
        • Buffered reading
        • Switching the input device to event-driven mode
      • Further reading
      • API
    • Tick interface
      • API
    • Timer Handler
      • API
    • Sleep management
    • Operating system and interrupts
      • Tasks and threads
      • Interrupts
    • Logging
      • Log level
      • Printing logs
        • Logging with printf
        • Custom log function
      • Add logs
      • API
    • Custom GPU
      • Overview
        • Draw task
        • Draw unit
        • Draw task evaluation
        • Dispatching
        • Layers
        • Hierarchy of modules
      • References
      • API
  • Overview
    • Objects
      • Attributes
        • Basic attributes
        • Specific attributes
      • Working mechanisms
        • Parent-child structure
        • Moving together
        • Visibility only on the parent
        • Create and delete objects
      • Screens
        • Create screens
        • Get the active screen
        • Load screens
        • Layers
        • Handling multiple displays
      • Parts
      • States
      • Snapshot
      • API
    • Positions, sizes, and layouts
      • Overview
        • Units
        • Boxing model
        • Important notes
      • Position
        • Simple way
        • Align
      • Size
        • Sizing the Simple way
      • Using styles
      • Translation
      • Transformation
        • Min and Max size
      • Layout
        • Layout Overview
        • Built-in layout
        • Flags
        • Adding new layouts
      • Examples
      • API
    • Styles
      • States
      • Cascading styles
      • Inheritance
      • Parts
      • Initialize styles and set/get properties
      • Add and remove styles to a widget
        • Add styles
        • Replace styles
        • Remove styles
        • Report style changes
        • Get a property's value on an object
      • Local styles
      • Properties
        • Typical background properties
      • Transitions
      • Opacity, Blend modes and Transformations
      • Color filter
      • Themes
        • Extending themes
      • Examples
        • Size styles
        • Background styles
        • Border styles
        • Outline styles
        • Shadow styles
        • Image styles
        • Arc styles
        • Text styles
        • Line styles
        • Transition
        • Using multiple styles
        • Local styles
        • Add styles to parts and states
        • Extending the current theme
        • Opacity and Transformations
        • Metallic knob with conic gradient
        • Radial gradient as background
        • Gradients for button background
      • API
    • Style properties
      • Size and position
        • width
        • min_width
        • max_width
        • height
        • min_height
        • max_height
        • length
        • x
        • y
        • align
        • transform_width
        • transform_height
        • translate_x
        • translate_y
        • transform_scale_x
        • transform_scale_y
        • transform_rotation
        • transform_pivot_x
        • transform_pivot_y
        • transform_skew_x
        • transform_skew_y
      • Padding
        • pad_top
        • pad_bottom
        • pad_left
        • pad_right
        • pad_row
        • pad_column
      • Margin
        • margin_top
        • margin_bottom
        • margin_left
        • margin_right
      • Background
        • bg_color
        • bg_opa
        • bg_grad_color
        • bg_grad_dir
        • bg_main_stop
        • bg_grad_stop
        • bg_main_opa
        • bg_grad_opa
        • bg_grad
        • bg_image_src
        • bg_image_opa
        • bg_image_recolor
        • bg_image_recolor_opa
        • bg_image_tiled
      • Border
        • border_color
        • border_opa
        • border_width
        • border_side
        • border_post
      • Outline
        • outline_width
        • outline_color
        • outline_opa
        • outline_pad
      • Shadow
        • shadow_width
        • shadow_offset_x
        • shadow_offset_y
        • shadow_spread
        • shadow_color
        • shadow_opa
      • Image
        • image_opa
        • image_recolor
        • image_recolor_opa
      • Line
        • line_width
        • line_dash_width
        • line_dash_gap
        • line_rounded
        • line_color
        • line_opa
      • Arc
        • arc_width
        • arc_rounded
        • arc_color
        • arc_opa
        • arc_image_src
      • Text
        • text_color
        • text_opa
        • text_font
        • text_letter_space
        • text_line_space
        • text_decor
        • text_align
      • Miscellaneous
        • radius
        • clip_corner
        • opa
        • opa_layered
        • color_filter_dsc
        • color_filter_opa
        • anim
        • anim_duration
        • transition
        • blend_mode
        • layout
        • base_dir
        • bitmap_mask_src
        • rotary_sensitivity
      • Flex
        • flex_flow
        • flex_main_place
        • flex_cross_place
        • flex_track_place
        • flex_grow
      • Grid
        • grid_column_dsc_array
        • grid_column_align
        • grid_row_dsc_array
        • grid_row_align
        • grid_cell_column_pos
        • grid_cell_x_align
        • grid_cell_column_span
        • grid_cell_row_pos
        • grid_cell_y_align
        • grid_cell_row_span
    • Scroll
      • Overview
        • Scrollbar
        • Events
      • Basic example
      • Features of scrolling
        • Scrollable
        • Scroll chain
        • Scroll momentum
        • Elastic scroll
        • Snapping
        • Scroll one
        • Scroll on focus
      • Scroll manually
      • Self size
      • Examples
        • Nested scrolling
        • Snapping
        • Floating button
        • Styling the scrollbars
        • Right to left scrolling
        • Translate on scroll
      • API
    • Layers
      • Order of creation
        • Change order
      • Screen-like layers
        • Top and sys layers
        • Bottom layers
      • Draw layers
        • Simple layer
        • Transformed layer
        • Clip corner
      • API
    • Events
      • Add events to a widget
      • Remove event(s) from widgets
      • Event codes
        • Input device events
        • Drawing events
        • Special events
        • Other events
        • Display events
        • Custom events
      • Sending events
        • Refresh event
      • Fields of lv_event_t
      • Event bubbling
      • Examples
        • Button click event
        • Handle multiple events
        • Event bubbling
        • Draw event
      • API
    • Input devices
      • Pointers
        • Cursor
        • Gestures
      • Keypad and encoder
        • Groups
        • Styling
      • API
    • Displays
      • Multiple display support
        • Using only one display
        • Mirror display
        • Split image
      • Screens
        • Transparent screens
      • Features of displays
        • Inactivity
        • Background
      • API
    • Colors
      • Creating colors
        • RGB
        • HSV
        • Palette
        • Modify and mix colors
        • Built-in colors
      • Opacity
      • API
    • Fonts
      • Unicode support
      • Built-in fonts
        • Normal fonts
        • Special fonts
      • Special features
        • Bidirectional support
        • Arabic and Persian support
        • Subpixel rendering
        • Compressed fonts
        • Kerning
      • Add a new font
      • Add new symbols
      • Load a font at run-time
      • Load a font from a memory buffer at run-time
      • Use a BDF font
        • Convert BDF to TTF
        • Example for a 12px font
      • Add a new font engine
      • Use font fallback
      • API
    • Images
      • Store images
        • Variables
        • Files
      • Color formats
      • Add and use images
        • Online converter
        • Manually create an image
        • Use images
      • Image decoder
        • Custom image formats
        • Register an image decoder
        • Manually use an image decoder
        • Image post-processing
      • Image caching
        • Cache size
        • Value of images
        • Memory usage
        • Clean the cache
        • Custom cache algorithm
      • API
    • File system
      • Ready to use drivers
      • Adding a driver
        • Registering a driver
        • Implementing the callbacks
        • Other callbacks
      • Usage example
      • Use drives for images
      • Optional file buffering/caching
        • lv_fs_read (behavior when the cache is enabled)
        • lv_fs_write (behavior when the cache is enabled)
        • lv_fs_seek (behavior when the cache is enabled)
        • lv_fs_tell (behavior when the cache is enabled)
      • API
    • Animations
      • Create an animation
      • Animation path
      • Speed vs time
      • Delete animations
      • Timeline
      • Examples
        • Start animation on an event
        • Playback animation
        • Cubic Bezier animation
        • Animation timeline
      • API
    • Timers
      • Create a timer
      • Ready and Reset
      • Set parameters
      • Repeat count
      • Enable and Disable
      • Pause and Resume
      • Measure idle time
      • Timer handler resume callback
      • Asynchronous calls
      • API
    • Profiler
      • Introduction
      • Usage
        • Configure profiler
        • Run the test scenario
        • Process the logs
        • Performance analysis
      • Add Measurement Point
      • Custom profiler implementation
      • FAQ
        • Perfetto log parsing fails
        • Function execution time displayed as 0s in Perfetto
        • Significant stuttering occurs during profiling
        • Trace logs are not being output
    • Renderers and GPUs
      • Software renderer
        • API
      • SDL renderer
        • API
      • Arm-2D GPU
        • How to Use
        • Design Considerations
        • Examples
        • API
      • NXP PXP GPU
        • API
      • DMA2D GPU
        • API
      • NXP VGLite GPU
        • API
      • VG-Lite General GPU
        • Configuration
        • VG-Lite Simulator
    • New widget
    • VG-Lite Simulator
      • How it works
      • Configuration
  • Widgets
    • Base object (lv_obj)
      • Overview
        • Coordinates
        • Parents and children
        • Display and Screens
        • Events
        • Styles
        • Flags
        • Groups
        • Extended click area
      • Events
      • Keys
      • Example
        • Base objects with custom styles
        • Make an object draggable
      • API
    • Arc (lv_arc)
      • Overview
      • Parts and Styles
      • Usage
        • Value and range
        • Rotation
        • Mode
        • Change rate
        • Knob offset
        • Setting the indicator manually
        • Interactive area
        • Place another object to the knob
      • Events
      • Keys
      • Example
        • Simple Arc
        • Loader with Arc
      • API
    • Animation Image (lv_animimg)
      • Overview
      • Parts and Styles
      • Usage
        • Image sources
        • Using the inner animation
      • Events
      • Keys
      • Example
        • Simple Animation Image
      • API
    • Bar (lv_bar)
      • Overview
      • Parts and Styles
      • Usage
        • Value and range
        • Modes
      • Events
      • Keys
      • Example
        • Simple Bar
        • Styling a bar
        • Temperature meter
        • Stripe pattern and range value
        • Bar with LTR and RTL base direction
        • Custom drawer to show the current value
        • Bar with opposite direction
      • API
    • Button (lv_button)
      • Overview
      • Parts and Styles
      • Usage
      • Events
      • Keys
      • Example
        • Simple Buttons
        • Styling buttons
        • Gummy button
      • API
    • Button matrix (lv_buttonmatrix)
      • Overview
      • Parts and Styles
      • Usage
        • Button's text
        • Control buttons
        • One check
      • Events
      • Keys
      • Example
        • Simple Button matrix
        • Custom buttons
        • Pagination
      • API
    • Calendar (lv_calendar)
      • Overview
      • Parts and Styles
      • Usage
        • Current date
        • Shown date
        • Highlighted days
        • Name of the days
        • Custom year list
        • Chinese calendar
      • Events
      • Keys
      • Headers
        • Arrow buttons
        • Drop-down
      • Example
        • Calendar with header
        • Chinese calendar
      • API
    • Chart (lv_chart)
      • Overview
      • Parts and Styles
      • Usage
        • Chart type
        • Data series
        • Modify the data
        • Update modes
        • Number of points
        • Vertical range
        • Division lines
        • Override default start point for series
        • Tick marks and labels
        • Zoom
        • Cursor
      • Events
      • Keys
      • Example
        • Line Chart
        • Axis ticks and labels with scrolling
        • Show the value of the pressed points
        • Recolor bars based on their value
        • Faded area line chart with custom division lines
        • Show cursor on the clicked point
        • Scatter chart
        • Circular line chart with gap
      • API
    • Canvas (lv_canvas)
      • Overview
      • Parts and Styles
      • Usage
        • Buffer
        • Indexed colors
        • Drawing
      • Events
      • Keys
      • Example
        • Drawing on the Canvas and rotate
        • Transparent Canvas with chroma keying
        • Draw a rectangle to the canvas
        • Draw a label to the canvas
        • Draw an arc to the canvas
        • Draw an image to the canvas
        • Draw a line to the canvas
        • Draw a vector graphic to the canvas
      • API
    • Checkbox (lv_checkbox)
      • Overview
      • Parts and Styles
      • Usage
        • Text
        • Check, uncheck, disable
      • Events
      • Keys
      • Example
        • Simple Checkboxes
        • Checkboxes as radio buttons
      • API
    • Drop-down list (lv_dropdown)
      • Overview
      • Parts and Styles
        • Button
        • List
      • Usage
      • Options
        • Set options
        • Get selected option
        • Direction
        • Symbol
        • Show selected
        • Manually open/close
      • Events
      • Keys
      • Example
        • Simple Drop down list
        • Drop down in four directions
        • Menu
      • API
    • Image (lv_image)
      • Overview
      • Parts and Styles
      • Usage
        • Image source
        • Label as an image
        • Transparency
        • Palette and Alpha index
        • Recolor
        • Offset
        • Transformations
        • Inner align
      • Events
      • Keys
      • Example
        • Image from variable and symbol
        • Image recoloring
        • Rotate and zoom
        • Image offset and styling
      • API
    • Image button (lv_imagebutton)
      • Overview
      • Parts and Styles
      • Usage
        • Image sources
        • States
      • Events
      • Keys
      • Example
        • Simple Image button
      • API
    • Keyboard (lv_keyboard)
      • Overview
      • Parts and Styles
      • Usage
        • Modes
        • Assign Text area
        • Key Popovers
        • New Keymap
      • Events
      • Keys
      • Example
        • Keyboard with text area
        • Keyboard with custom map
      • API
    • Label (lv_label)
      • Overview
      • Parts and Styles
      • Usage
        • Set text
        • Newline
        • Long modes
        • Text selection
        • Text alignment
        • Very long texts
        • Custom scrolling animations
        • Symbols
      • Events
      • Keys
      • Example
        • Line wrap, recoloring and scrolling
        • Text shadow
        • Show LTR, RTL and Chinese texts
        • Draw label with gradient color
        • Customize circular scrolling animation
      • API
    • LED (lv_led)
      • Overview
      • Parts and Styles
      • Usage
        • Color
        • Brightness
        • Toggle
      • Events
      • Keys
      • Example
        • LED with custom style
      • API
    • Line (lv_line)
      • Overview
      • Parts and Styles
      • Usage
        • Set points
        • Auto-size
        • Invert y
      • Events
      • Keys
      • Example
        • Simple Line
      • API
    • List (lv_list)
      • Overview
      • Parts and Styles
      • Usage
        • Buttons
        • Texts
      • Events
      • Keys
      • Example
        • Simple List
        • Sorting a List using up and down buttons
      • API
    • Lottie (lv_lottie)
      • Overview
      • Parts and Styles
      • Usage
        • Dependencies
        • Set a buffer
        • Set a source
        • Get the animation
      • Events
      • Keys
      • Example
        • Load a Lottie animation from an array
        • Load a Lottie animation from file
      • API
    • Menu (lv_menu)
      • Overview
      • Parts and Styles
      • Usage
        • Create a menu
        • Header mode
        • Root back button mode
        • Create a menu page
        • Set a menu page in the main area
        • Set a menu page in the sidebar
        • Linking between menu pages
        • Create a menu container, section, separator
      • Events
      • Keys
      • Example
        • Simple Menu
        • Simple Menu with root btn
        • Simple Menu with custom header
        • Simple Menu with floating btn to add new menu page
        • Complex Menu
      • API
    • Message box (lv_msgbox)
      • Overview
      • Parts and Styles
      • Usage
        • Create a message box
        • Get the parts
        • Close the message box
      • Events
      • Keys
      • Example
        • Simple Message box
        • Scrolling and styled Message box
      • API
    • Roller (lv_roller)
      • Overview
      • Parts and Styles
      • Usage
        • Set options
        • Get selected option
        • Visible rows
      • Events
      • Keys
      • Example
        • Simple Roller
        • Styling the roller
        • add fade mask to roller
      • API
    • Scale (lv_scale)
      • Overview
      • Parts and Styles
      • Usage
        • Set ranges
        • Tick drawing order
        • Configure ticks
        • Sections
      • Events
      • Keys
      • Example
      • API
    • Slider (lv_slider)
      • Overview
      • Parts and Styles
      • Usage
        • Value and range
        • Modes
        • Knob-only mode
      • Events
      • Keys
      • Example
        • Simple Slider
        • Slider with custom style
        • Slider with extended drawer
        • Slider with opposite direction
      • API
    • Span (lv_span)
      • Overview
      • Parts and Styles
      • Usage
        • Set text and style
        • Retrieving a span child
        • Child Count
        • Text align
        • Modes
        • Overflow
        • First line indent
        • Lines
      • Events
      • Keys
      • Example
        • Span with custom styles
      • API
    • Spinbox (lv_spinbox)
      • Overview
      • Parts and Styles
        • Value, range and step
        • Format
        • Rollover
      • Events
      • Keys
      • Example
        • Simple Spinbox
      • API
    • Spinner (lv_spinner)
      • Overview
      • Parts and Styles
      • Usage
        • Create a spinner
      • Events
      • Keys
      • Example
        • Simple spinner
      • API
    • Switch (lv_switch)
      • Overview
      • Parts and Styles
      • Usage
        • Change state
      • Events
      • Keys
      • Example
        • Simple Switch
      • API
    • Table (lv_table)
      • Overview
      • Parts and Styles
      • Usage
        • Set cell value
        • Rows and Columns
        • Width and Height
        • Merge cells
        • Scroll
      • Events
      • Keys
      • Example
        • Simple table
        • Lightweighted list from table
        • MicroPython
      • API
    • Tabview (lv_tabview)
      • Overview
      • Parts and Styles
      • Usage
        • Create a Tab view
        • Add tabs
        • Rename tabs
        • Change tab
        • Set tab bar position
        • Set tab bar size
        • Get the parts
      • Events
      • Keys
      • Example
        • Simple Tabview
        • Tabs on the left, styling and no scrolling
      • API
    • Text area (lv_textarea)
      • Overview
      • Parts and Styles
      • Usage
        • Add text
        • Placeholder
        • Delete character
        • Move the cursor
        • Hide the cursor
        • One line mode
        • Password mode
        • Accepted characters
        • Max text length
        • Very long texts
        • Select text
      • Events
      • Keys
      • Example
        • Simple Text area
        • Text area with password field
        • Text auto-formatting
      • API
    • Tile view (lv_tileview)
      • Overview
      • Parts and Styles
      • Usage
        • Add a tile
        • Change tile
      • Events
      • Keys
      • Example
        • Tileview with content
      • API
    • Window (lv_win)
      • Overview
      • Parts and Styles
      • Usage
        • Create a Window
        • Title and buttons
      • Get the parts
      • Events
      • Keys
      • Example
        • Simple window
      • API
  • Layouts
    • Flex
      • Overview
      • Terms
      • Simple interface
        • Flex flow
        • Flex align
        • Flex grow
      • Style interface
        • Internal padding
      • Other features
        • RTL
        • New track
      • Example
        • A simple row and a column layout with flexbox
        • Arrange items in rows with wrap and even spacing
        • Demonstrate flex grow
        • Demonstrate flex grow.
        • Demonstrate column and row gap style properties
        • RTL base direction changes order of the items
      • API
    • Grid
      • Overview
      • Terms
      • Simple interface
        • Grid descriptors
        • Grid items
        • Grid align
        • Sub grid
      • Style interface
        • Internal padding
      • Other features
        • RTL
      • Example
        • A simple grid
        • Demonstrate cell placement and span
        • Demonstrate grid's -free unit-
        • Demonstrate track placement
        • Demonstrate column and row gap
        • Demonstrate RTL direction on grid
      • API
  • 3rd party libraries
    • File System Interfaces
      • Usage
        • Working with common prefixes
        • Caching
      • API
    • BMP decoder
      • Limitations
      • Example
      • Open a BMP image from file
      • API
    • Tiny JPEG Decompressor (TJpgDec)
      • Overview
      • Usage
      • Converter
        • Converting JPEG to C array
      • Example
      • Load a JPG image
      • API
    • libjpeg-turbo decoder
      • Install
      • Add libjpeg-turbo to your project
      • Usage
      • Example
      • Load a JPG image
      • API
    • LodePNG decoder
      • Compress PNG files
      • Example
      • Open a PNG image from file and variable
      • API
    • libpng decoder
      • Install
      • Add libpng to your project
      • Usage
      • Example
      • Open a PNG image from file and variable
      • API
    • GIF decoder
      • Convert GIF files to C array
      • Use GIF images from file
      • Memory requirements
      • Example
      • Open a GIF image from file and variable
      • API
    • FreeType support
      • Add FreeType to your project
        • For UNIX
        • For Embedded Devices
      • Usage
      • Example
      • Open a front with FreeType
      • Learn more
      • API
    • Tiny TTF font engine
      • Usage
      • Example
      • Open a font with Tiny TTF from data array
      • Load a font with Tiny_TTF from file
      • Change font size with Tiny_TTF
      • API
    • QR code
      • Usage
      • Notes
      • Example
      • Create a QR Code
      • API
    • Barcode
      • Usage
      • Notes
      • Example
      • Create a Barcode
      • API
    • Rlottie player
      • Build Rlottie
        • ESP-IDF example at bottom
      • Usage
        • Use Rlottie from file
        • Use Rlottie from raw string data
      • Getting animations
      • Controlling animations
      • ESP-IDF Example
        • Background
        • IDF Setup
        • Rlottie patch file
        • CMakeLists for IDF
        • Additional Rlottie considerations in ESP-IDF
        • Additional changes to make use of SPIRAM
      • Example
      • Load a Lottie animation from raw data
      • Load a Lottie animation from a file
      • API
    • FFmpeg support
      • Install FFmpeg
      • Add FFmpeg to your project
      • Usage
      • Example
      • Decode image
      • Decode video
      • API
    • RLE Compress
      • Benefits
      • Theory
      • Usage
      • Generate RLE compressed binary images
    • Arduino ESP littlefs
      • Usage
      • API
    • Arduino SD
      • Usage
      • API
    • littlefs
      • Usage
      • Example
      • API
  • Others
    • Snapshot
      • Usage
        • Free the Image
        • Use Existing Buffer
      • Example
      • Simple snapshot example
      • API
    • Monkey
      • Usage
      • Example
      • Touchpad monkey example
      • Encoder monkey example
      • Button monkey example
      • API
    • Grid navigation
      • Usage
      • Focusable objects
      • Example
      • Basic grid navigation
      • Grid navigation on a list
      • Nested grid navigations
      • Simple navigation on a list widget
      • Grid navigation for only one axis
      • API
    • File Explorer
      • Usage
        • Quick access
        • Sort
      • Events
      • Example
      • Simple File Explorer
      • Control File Explorer
      • Custom sort
      • API
    • Fragment
      • Usage
        • Create Fragment Class
        • Use lv_fragment_manager
        • Fragment Based Navigation
      • Example
      • Basic fragment usage
      • Stack navigation example
      • API
    • Observer
      • Overview
      • Subject
        • Subject initialization
        • Set subject value
        • Get subject's value
        • Get subject's previous value
      • Observer
        • Subscribe to a subject
        • Unsubscribe from a subject
      • Subject groups
      • Widget binding
        • Base object
        • Label
        • Arc
        • Slider
        • Roller
        • Drop-down
      • Example
        • Bind a slider's value to a label
        • Handling login and its states
        • Set time with 12/24 mode and AM/PM
        • Custom tab view with state management
        • Firmware update process
        • Modular style update on theme change
      • API
    • Image font
      • Usage
      • Example
      • Use emojis in a text.
      • API
    • Pinyin IME
      • Usage
      • Custom dictionary
        • Dictionary format
        • Apply new dictionary
      • Modes
      • Example
      • Pinyin IME 26 key input
      • Pinyin IME 9 key input
      • API
    • OBJ ID
      • Usage
        • Use custom ID generator
        • Dump obj tree
        • Find child by ID
    • Widget Property
      • Usage
        • Property ID
        • Property Value
      • A Step Further
  • API
    • lv_init.h
      • lv_init()
      • lv_deinit()
      • lv_is_initialized()
    • lv_api_map_v9_0.h
      • lv_image_set_align
      • lv_image_get_align
      • lv_button_bind_checked
      • LV_DRAW_BUF_DEFINE
      • _lv_utils_bsearch
      • lv_draw_buf_align_user
      • lv_draw_buf_create_user
      • lv_draw_buf_width_to_stride_user
      • lv_draw_buf_dup_user
      • lv_draw_buf_invalidate_cache_user
      • lv_draw_buf_flush_cache_user
      • lv_draw_buf_destroy_user
    • lv_api_map_v9_1.h
      • _LV_EVENT_LAST
      • _lv_obj_t
      • _lv_obj_class_t
      • _lv_event_t
      • _lv_event_code_t
      • _lv_event_mark_deleted
      • lv_obj_add_event
      • _lv_anim_t
      • _LV_STYLE_LAST_BUILT_IN_PROP
      • _LV_FLEX_REVERSE
      • _LV_FLEX_WRAP
      • _LV_FLEX_COLUMN
      • _lv_area_is_equal
      • _lv_area_is_in
      • _lv_area_intersect
      • _lv_area_is_point_on
      • _lv_area_join
      • _lv_image_buf_get_transformed_area
      • _lv_ll_init
      • _lv_ll_ins_head
      • _lv_ll_ins_prev
      • _lv_ll_ins_tail
      • _lv_ll_get_head
      • _lv_ll_get_tail
      • _lv_ll_get_next
      • _lv_ll_get_prev
      • _lv_ll_get_len
      • _lv_ll_move_before
      • _lv_ll_is_empty
      • _lv_ll_clear
      • _lv_ll_remove
      • _lv_ll_chg_list
      • _LV_LL_READ
      • _LV_LL_READ_BACK
      • _lv_obj_scroll_by_raw
      • _lv_obj_get_ext_draw_size
      • _lv_indev_scroll_handler
      • _lv_display_t
      • _lv_display_refr_timer
      • _lv_disp_refr_timer
      • _lv_disp_get_refr_timer
      • _lv_timer_t
      • _lv_inv_area
    • lv_conf_kconfig.h
    • lvgl.h
    • lv_conf_internal.h
      • LV_OS_NONE
      • LV_OS_PTHREAD
      • LV_OS_FREERTOS
      • LV_OS_CMSIS_RTOS2
      • LV_OS_RTTHREAD
      • LV_OS_WINDOWS
      • LV_OS_MQX
      • LV_OS_CUSTOM
      • LV_STDLIB_BUILTIN
      • LV_STDLIB_CLIB
      • LV_STDLIB_MICROPYTHON
      • LV_STDLIB_RTTHREAD
      • LV_STDLIB_CUSTOM
      • LV_DRAW_SW_ASM_NONE
      • LV_DRAW_SW_ASM_NEON
      • LV_DRAW_SW_ASM_HELIUM
      • LV_DRAW_SW_ASM_CUSTOM
      • __LV_TO_STR_AUX
      • __LV_TO_STR
      • LV_TEXTAREA_DEF_PWD_SHOW_TIME
      • LV_USE_LZ4
      • LV_USE_THORVG
    • lv_api_map_v8.h
      • LV_DISP_ROTATION_0
      • LV_DISP_ROTATION_90
      • LV_DISP_ROTATION_180
      • LV_DISP_ROTATION_270
      • LV_DISP_RENDER_MODE_PARTIAL
      • LV_DISP_RENDER_MODE_DIRECT
      • LV_DISP_RENDER_MODE_FULL
      • LV_BTNMATRIX_BTN_NONE
      • LV_BTNMATRIX_CTRL_HIDDEN
      • LV_BTNMATRIX_CTRL_NO_REPEAT
      • LV_BTNMATRIX_CTRL_DISABLED
      • LV_BTNMATRIX_CTRL_CHECKABLE
      • LV_BTNMATRIX_CTRL_CHECKED
      • LV_BTNMATRIX_CTRL_CLICK_TRIG
      • LV_BTNMATRIX_CTRL_POPOVER
      • LV_BTNMATRIX_CTRL_CUSTOM_1
      • LV_BTNMATRIX_CTRL_CUSTOM_2
      • LV_IMGBTN_STATE_RELEASED
      • LV_IMGBTN_STATE_PRESSED
      • LV_IMGBTN_STATE_DISABLED
      • LV_IMGBTN_STATE_CHECKED_RELEASED
      • LV_IMGBTN_STATE_CHECKED_PRESSED
      • LV_IMGBTN_STATE_CHECKED_DISABLED
      • LV_RES_OK
      • LV_RES_INV
      • LV_INDEV_STATE_PR
      • LV_INDEV_STATE_REL
      • lv_obj_del
      • lv_obj_del_async
      • lv_obj_clear_flag
      • lv_obj_clear_state
      • lv_indev_set_disp
      • lv_indev_get_act
      • lv_scr_act
      • lv_disp_remove
      • lv_disp_set_default
      • lv_disp_get_default
      • lv_disp_get_next
      • lv_disp_set_rotation
      • lv_disp_get_hor_res
      • lv_disp_get_ver_res
      • lv_disp_get_physical_hor_res
      • lv_disp_get_physical_ver_res
      • lv_disp_get_offset_x
      • lv_disp_get_offset_y
      • lv_disp_get_rotation
      • lv_disp_get_dpi
      • lv_disp_get_antialiasing
      • lv_disp_flush_ready
      • lv_disp_flush_is_last
      • lv_disp_get_scr_act
      • lv_disp_get_scr_prev
      • lv_disp_load_scr
      • lv_scr_load
      • lv_scr_load_anim
      • lv_disp_get_layer_top
      • lv_disp_get_layer_sys
      • lv_disp_send_event
      • lv_disp_set_theme
      • lv_disp_get_theme
      • lv_disp_get_inactive_time
      • lv_disp_trig_activity
      • lv_disp_enable_invalidation
      • lv_disp_is_invalidation_enabled
      • lv_disp_refr_timer
      • lv_disp_get_refr_timer
      • lv_timer_del
      • lv_anim_del
      • lv_anim_del_all
      • lv_anim_set_ready_cb
      • lv_group_del
      • lv_txt_get_size
      • lv_txt_get_width
      • lv_img_create
      • lv_img_set_src
      • lv_img_set_offset_x
      • lv_img_set_offset_y
      • lv_img_set_angle
      • lv_img_set_pivot
      • lv_img_set_zoom
      • lv_img_set_antialias
      • lv_img_get_src
      • lv_img_get_offset_x
      • lv_img_get_offset_y
      • lv_img_get_angle
      • lv_img_get_pivot
      • lv_img_get_zoom
      • lv_img_get_antialias
      • lv_imgbtn_create
      • lv_imgbtn_set_src
      • lv_imgbtn_set_state
      • lv_imgbtn_get_src_left
      • lv_imgbtn_get_src_middle
      • lv_imgbtn_get_src_right
      • lv_list_set_btn_text
      • lv_list_get_btn_text
      • lv_list_add_btn
      • lv_btn_create
      • lv_btnmatrix_create
      • lv_btnmatrix_set_map
      • lv_btnmatrix_set_ctrl_map
      • lv_btnmatrix_set_selected_btn
      • lv_btnmatrix_set_btn_ctrl
      • lv_btnmatrix_clear_btn_ctrl
      • lv_btnmatrix_set_btn_ctrl_all
      • lv_btnmatrix_clear_btn_ctrl_all
      • lv_btnmatrix_set_btn_width
      • lv_btnmatrix_set_one_checked
      • lv_btnmatrix_get_map
      • lv_btnmatrix_get_selected_btn
      • lv_btnmatrix_get_btn_text
      • lv_btnmatrix_has_button_ctrl
      • lv_btnmatrix_get_one_checked
      • lv_tabview_get_tab_btns
      • lv_tabview_get_tab_act
      • lv_tabview_set_act
      • lv_tileview_get_tile_act
      • lv_obj_set_tile_id
      • lv_obj_set_tile
      • lv_roller_set_visible_row_cnt
      • lv_roller_get_option_cnt
      • lv_table_set_col_cnt
      • lv_table_set_row_cnt
      • lv_table_get_col_cnt
      • lv_table_get_row_cnt
      • lv_table_set_col_width
      • lv_table_get_col_width
      • lv_dropdown_get_option_cnt
      • lv_obj_get_child_cnt
      • lv_obj_get_disp
      • lv_obj_delete_anim_ready_cb
      • LV_STYLE_ANIM_TIME
      • LV_STYLE_IMG_OPA
      • LV_STYLE_IMG_RECOLOR
      • LV_STYLE_IMG_RECOLOR_OPA
      • LV_STYLE_SHADOW_OFS_X
      • LV_STYLE_SHADOW_OFS_Y
      • LV_STYLE_TRANSFORM_ANGLE
      • lv_obj_get_style_anim_time
      • lv_obj_get_style_img_opa
      • lv_obj_get_style_img_recolor
      • lv_obj_get_style_img_recolor_filtered
      • lv_obj_get_style_img_recolor_opa
      • lv_obj_get_style_shadow_ofs_x
      • lv_obj_get_style_shadow_ofs_y
      • lv_obj_get_style_transform_angle
      • lv_obj_get_style_bg_img_src
      • lv_obj_get_style_bg_img_recolor
      • lv_obj_get_style_bg_img_recolor_opa
      • lv_obj_set_style_anim_time
      • lv_obj_set_style_img_opa
      • lv_obj_set_style_img_recolor
      • lv_obj_set_style_img_recolor_opa
      • lv_obj_set_style_shadow_ofs_x
      • lv_obj_set_style_shadow_ofs_y
      • lv_obj_set_style_transform_zoom
      • lv_obj_set_style_transform_angle
      • lv_obj_set_style_bg_img_src
      • lv_obj_set_style_bg_img_recolor
      • lv_obj_set_style_bg_img_recolor_opa
      • lv_style_set_anim_time
      • lv_style_set_img_opa
      • lv_style_set_img_recolor
      • lv_style_set_img_recolor_opa
      • lv_style_set_shadow_ofs_x
      • lv_style_set_shadow_ofs_y
      • lv_style_set_transform_angle
      • lv_style_set_transform_zoom
      • lv_style_set_bg_img_src
      • lv_style_set_bg_img_recolor
      • lv_style_set_bg_img_recolor_opa
      • lv_keyboard_get_selected_btn
      • lv_keyboard_get_btn_text
      • LV_ZOOM_NONE
      • lv_image_decoder_built_in_open
      • lv_image_decoder_built_in_close
      • LV_IMG_DECLARE
      • lv_coord_t
      • lv_res_t
      • lv_img_dsc_t
      • lv_disp_t
      • lv_disp_rotation_t
      • lv_disp_render_t
      • lv_anim_ready_cb_t
      • lv_scr_load_anim_t
      • lv_btnmatrix_ctrl_t
      • lv_task_handler()
      • lv_obj_move_foreground()
      • lv_obj_move_background()
    • libs
      • libjpeg_turbo
        • lv_libjpeg_turbo.h
      • ffmpeg
        • lv_ffmpeg.h
      • bin_decoder
        • lv_bin_decoder.h
      • rle
        • lv_rle.h
      • qrcode
        • lv_qrcode.h
        • qrcodegen.h
      • lz4
        • lz4.h
      • libpng
        • lv_libpng.h
      • bmp
        • lv_bmp.h
      • tjpgd
        • lv_tjpgd.h
        • tjpgd.h
        • tjpgdcnf.h
      • rlottie
        • lv_rlottie.h
      • tiny_ttf
        • lv_tiny_ttf.h
        • stb_truetype_htcw.h
        • stb_rect_pack.h
      • barcode
        • lv_barcode.h
        • code128.h
      • freetype
        • ftoption.h
        • lv_freetype.h
        • ftmodule.h
      • thorvg
        • tvgSvgLoaderCommon.h
        • tvgCanvas.h
        • tvgStr.h
        • thorvg_capi.h
        • tvgAnimation.h
        • tvgSvgPath.h
        • tvgPaint.h
        • thorvg.h
        • tvgSaveModule.h
        • tvgArray.h
        • tvgCompressor.h
        • tvgLock.h
        • tvgBinaryDesc.h
        • tvgSwRasterTexmap.h
        • tvgPicture.h
        • tvgSwCommon.h
        • tvgLottieInterpolator.h
        • thorvg_lottie.h
        • tvgText.h
        • tvgLoadModule.h
        • tvgRender.h
        • tvgSvgCssStyle.h
        • tvgLottieLoader.h
        • tvgSwRasterNeon.h
        • tvgLines.h
        • tvgSvgUtil.h
        • tvgCommon.h
        • tvgLottieBuilder.h
        • config.h
        • tvgFill.h
        • tvgSwRasterAvx.h
        • tvgLottieExpressions.h
        • tvgSwRenderer.h
        • tvgShape.h
        • tvgInlist.h
        • tvgLottieParser.h
        • tvgScene.h
        • tvgLottieProperty.h
        • tvgRawLoader.h
        • tvgLottieModel.h
        • tvgSvgSceneBuilder.h
        • tvgFrameModule.h
        • tvgXmlParser.h
        • tvgSvgLoader.h
        • tvgSwRasterC.h
        • tvgMath.h
        • tvgTaskScheduler.h
        • tvgLottieParserHandler.h
        • tvgIteratorAccessor.h
        • tvgLoader.h
        • rapidjson
      • fsdrv
        • lv_fsdrv.h
      • lodepng
        • lv_lodepng.h
        • lodepng.h
      • gif
        • gifdec_mve.h
        • lv_gif.h
        • gifdec.h
    • themes
      • lv_theme.h
        • lv_theme_apply_cb_t
        • lv_theme_get_from_obj()
        • lv_theme_apply()
        • lv_theme_set_parent()
        • lv_theme_set_apply_cb()
        • lv_theme_get_font_small()
        • lv_theme_get_font_normal()
        • lv_theme_get_font_large()
        • lv_theme_get_color_primary()
        • lv_theme_get_color_secondary()
      • default
        • lv_theme_default.h
      • mono
        • lv_theme_mono.h
      • simple
        • lv_theme_simple.h
    • indev
      • lv_indev_scroll.h
        • lv_indev_scroll_handler()
        • lv_indev_scroll_throw_handler()
        • lv_indev_scroll_throw_predict()
        • lv_indev_scroll_get_snap_dist()
      • lv_indev.h
        • lv_indev_read_cb_t
        • lv_indev_type_t
        • lv_indev_state_t
        • lv_indev_mode_t
        • lv_indev_create()
        • lv_indev_delete()
        • lv_indev_get_next()
        • lv_indev_read()
        • lv_indev_read_timer_cb()
        • lv_indev_enable()
        • lv_indev_active()
        • lv_indev_set_type()
        • lv_indev_set_read_cb()
        • lv_indev_set_user_data()
        • lv_indev_set_driver_data()
        • lv_indev_set_display()
        • lv_indev_set_long_press_time()
        • lv_indev_set_scroll_limit()
        • lv_indev_set_scroll_throw()
        • lv_indev_get_type()
        • lv_indev_get_read_cb()
        • lv_indev_get_state()
        • lv_indev_get_group()
        • lv_indev_get_display()
        • lv_indev_get_user_data()
        • lv_indev_get_driver_data()
        • lv_indev_get_press_moved()
        • lv_indev_reset()
        • lv_indev_stop_processing()
        • lv_indev_reset_long_press()
        • lv_indev_set_cursor()
        • lv_indev_set_group()
        • lv_indev_set_button_points()
        • lv_indev_get_point()
        • lv_indev_get_gesture_dir()
        • lv_indev_get_key()
        • lv_indev_get_scroll_dir()
        • lv_indev_get_scroll_obj()
        • lv_indev_get_vect()
        • lv_indev_wait_release()
        • lv_indev_get_active_obj()
        • lv_indev_get_read_timer()
        • lv_indev_set_mode()
        • lv_indev_get_mode()
        • lv_indev_search_obj()
        • lv_indev_add_event_cb()
        • lv_indev_get_event_count()
        • lv_indev_get_event_dsc()
        • lv_indev_remove_event()
        • lv_indev_remove_event_cb_with_user_data()
        • lv_indev_send_event()
        • lv_indev_data_t
    • tick
      • lv_tick.h
        • lv_tick_get_cb_t
        • lv_delay_cb_t
        • lv_tick_inc()
        • lv_tick_get()
        • lv_tick_elaps()
        • lv_delay_ms()
        • lv_tick_set_cb()
        • lv_delay_set_cb()
    • stdlib
      • lv_mem.h
        • lv_mem_pool_t
        • lv_mem_init()
        • lv_mem_deinit()
        • lv_mem_add_pool()
        • lv_mem_remove_pool()
        • lv_malloc()
        • lv_malloc_zeroed()
        • lv_free()
        • lv_realloc()
        • lv_malloc_core()
        • lv_free_core()
        • lv_realloc_core()
        • lv_mem_monitor_core()
        • lv_mem_test_core()
        • lv_mem_test()
        • lv_mem_monitor()
        • lv_mem_monitor_t
      • lv_string.h
        • lv_memcpy()
        • lv_memset()
        • lv_memmove()
        • lv_memcmp()
        • lv_memzero()
        • lv_strlen()
        • lv_strlcpy()
        • lv_strncpy()
        • lv_strcpy()
        • lv_strcmp()
        • lv_strdup()
        • lv_strcat()
        • lv_strncat()
      • lv_sprintf.h
        • LV_PRId32
        • LV_PRIu32
        • LV_PRIx32
        • LV_PRIX32
        • lv_snprintf()
        • lv_vsnprintf()
      • builtin
        • lv_tlsf.h
    • misc
      • lv_array.h
        • LV_ARRAY_DEFAULT_CAPACITY
        • LV_ARRAY_DEFAULT_SHRINK_RATIO
        • lv_array_init()
        • lv_array_resize()
        • lv_array_deinit()
        • lv_array_size()
        • lv_array_capacity()
        • lv_array_is_empty()
        • lv_array_is_full()
        • lv_array_copy()
        • lv_array_clear()
        • lv_array_shrink()
        • lv_array_remove()
        • lv_array_erase()
        • lv_array_concat()
        • lv_array_push_back()
        • lv_array_assign()
        • lv_array_at()
        • lv_array_front()
        • lv_array_back()
        • lv_array_t
      • lv_math.h
        • LV_TRIGO_SIN_MAX
        • LV_TRIGO_SHIFT
        • LV_BEZIER_VAL_SHIFT
        • LV_BEZIER_VAL_MAX
        • LV_BEZIER_VAL_FLOAT
        • LV_ALIGN_UP
        • LV_ROUND_UP
        • LV_MIN
        • LV_MIN3
        • LV_MIN4
        • LV_MAX
        • LV_MAX3
        • LV_MAX4
        • LV_CLAMP
        • LV_ABS
        • LV_UDIV255
        • LV_IS_SIGNED
        • LV_UMAX_OF
        • LV_SMAX_OF
        • LV_MAX_OF
        • lv_cubic_bezier()
        • lv_bezier3()
        • lv_atan2()
        • lv_sqrt32()
        • lv_sqr()
        • lv_pow()
        • lv_map()
        • lv_rand_set_seed()
        • lv_rand()
        • lv_sqrt_res_t
      • lv_color_op.h
        • lv_color_filter_cb_t
        • lv_color_mix()
        • lv_color_mix32()
        • lv_color_brightness()
        • lv_color_filter_dsc_init()
        • lv_color_filter_dsc_t
      • lv_utils.h
        • lv_utils_bsearch()
        • lv_draw_buf_save_to_file()
      • lv_profiler_builtin.h
      • lv_assert.h
        • LV_ASSERT
        • LV_ASSERT_MSG
        • LV_ASSERT_FORMAT_MSG
        • LV_ASSERT_NULL
        • LV_ASSERT_MALLOC
        • LV_ASSERT_MEM_INTEGRITY
      • lv_rb.h
        • lv_rb_compare_res_t
        • lv_rb_compare_t
        • lv_rb_color_t
        • lv_rb_init()
        • lv_rb_insert()
        • lv_rb_find()
        • lv_rb_remove_node()
        • lv_rb_remove()
        • lv_rb_drop_node()
        • lv_rb_drop()
        • lv_rb_minimum()
        • lv_rb_maximum()
        • lv_rb_minimum_from()
        • lv_rb_maximum_from()
        • lv_rb_destroy()
      • lv_style_gen.h
        • LV_STYLE_CONST_WIDTH
        • LV_STYLE_CONST_MIN_WIDTH
        • LV_STYLE_CONST_MAX_WIDTH
        • LV_STYLE_CONST_HEIGHT
        • LV_STYLE_CONST_MIN_HEIGHT
        • LV_STYLE_CONST_MAX_HEIGHT
        • LV_STYLE_CONST_LENGTH
        • LV_STYLE_CONST_X
        • LV_STYLE_CONST_Y
        • LV_STYLE_CONST_ALIGN
        • LV_STYLE_CONST_TRANSFORM_WIDTH
        • LV_STYLE_CONST_TRANSFORM_HEIGHT
        • LV_STYLE_CONST_TRANSLATE_X
        • LV_STYLE_CONST_TRANSLATE_Y
        • LV_STYLE_CONST_TRANSFORM_SCALE_X
        • LV_STYLE_CONST_TRANSFORM_SCALE_Y
        • LV_STYLE_CONST_TRANSFORM_ROTATION
        • LV_STYLE_CONST_TRANSFORM_PIVOT_X
        • LV_STYLE_CONST_TRANSFORM_PIVOT_Y
        • LV_STYLE_CONST_TRANSFORM_SKEW_X
        • LV_STYLE_CONST_TRANSFORM_SKEW_Y
        • LV_STYLE_CONST_PAD_TOP
        • LV_STYLE_CONST_PAD_BOTTOM
        • LV_STYLE_CONST_PAD_LEFT
        • LV_STYLE_CONST_PAD_RIGHT
        • LV_STYLE_CONST_PAD_ROW
        • LV_STYLE_CONST_PAD_COLUMN
        • LV_STYLE_CONST_MARGIN_TOP
        • LV_STYLE_CONST_MARGIN_BOTTOM
        • LV_STYLE_CONST_MARGIN_LEFT
        • LV_STYLE_CONST_MARGIN_RIGHT
        • LV_STYLE_CONST_BG_COLOR
        • LV_STYLE_CONST_BG_OPA
        • LV_STYLE_CONST_BG_GRAD_COLOR
        • LV_STYLE_CONST_BG_GRAD_DIR
        • LV_STYLE_CONST_BG_MAIN_STOP
        • LV_STYLE_CONST_BG_GRAD_STOP
        • LV_STYLE_CONST_BG_MAIN_OPA