lvgl.arc¶

lvgl.arc([parent, ]params)

Display an arc.

Parameters¶

Name Req Type Description

parent no object optional LVGL object to attach the new object to; if omitted the object is created in the top-level script window

params yes table

Field	Type	Description
`x`	`number`	position relative to the top-left of the parent
`y`	`number`	position relative to the top-left of the parent
`w`	`number`	width
`h`	`number`	height
`color`	`color or function`	primary color for the object
`pos`	`function`	dynamic position callback returning `x, y`
`size`	`function`	dynamic size callback returning `w, h`
`visible`	`function`	dynamic visibility callback
`floating`	`boolean`	keep the object fixed inside a scrollable container, added in 2.11.6, defaults to false
`thickness`	`number`	width of the arc's line, defaults to 1
`radius`	`number or function`	radius of the arc, defaults to 0
`startAngle`	`number or function`	starting angle in degrees (0-360), 0 is 3 o'clock, defaults to 0
`endAngle`	`number or function`	ending angle in degrees, defaults to 360
`opacity`	`number or function`	opacity from 0 (transparent) to 255 (opaque), defaults to 255
`rounded`	`boolean`	if true the ends of the arc are rounded, defaults to false
`bgColor`	`color or function`	color of the background arc, not used by default
`bgOpacity`	`number or function`	opacity of the background arc, defaults to 0 (not visible)
`bgStartAngle`	`number or function`	starting angle of the background arc in degrees, defaults to 0
`bgEndAngle`	`number or function`	ending angle of the background arc in degrees, defaults to 360

Name	Type	Description
`-`	`table`	LVGL object

Arc objects have two elements, a foreground arc and a background arc. By default the background arc is not shown -- to show it, set both bgColor and bgOpacity. @notice If opacity or bgOpacity is less than 255 and rounded is true, the ends of the arc will not draw correctly. This is an LVGL limitation.

radio/src/lua/api_colorlcd_lvgl.cpp