ButtonDial

Circular button dial component for discrete parameter selection.

A drawable dial component with multiple buttons arranged in a circle. Used for selecting discrete values or modes.

Namespace: enjin2

Header: include/enjin2/components/button_dial.hpp

Public Methods

`ButtonDial(Object *owner, uint8_t outerRadius, uint8_t innerRadius, uint8_t buttonCount)`

Construct a new ButtonDial component.

ownerThe object that owns this component outerRadiusOuter radius of the dial innerRadiusInner radius of the dial buttonCountNumber of buttons around the circumference

`void onCreate() override`

Initialize the button dial.

`void onUpdate(float dt) override`

Update the button dial state.

dtTime elapsed since last update in seconds

`void draw(ICanvas< uint8_t > &canvas)`

Draw the button dial to the canvas.

canvasThe canvas to draw to

`void setSelectedButton(int id)`

Set the selected button.

idButton ID (0 to buttonCount-1, -1 for no selection)

`int getSelectedButton() const`

Get the currently selected button.

Button ID (-1 if no selection)

`void setColor(uint8_t newColor)`

Set the dial color.

newColorColor value (0-15 for 4-bit grayscale)

`uint8_t getButtonCount() const`

Get the number of buttons.

Number of buttons around the circumference

Public Methods​

ButtonDial(Object *owner, uint8_t outerRadius, uint8_t innerRadius, uint8_t buttonCount)​

void onCreate() override​

void onUpdate(float dt) override​

void draw(ICanvas&lt; uint8_t &gt; &canvas)​

void setSelectedButton(int id)​

int getSelectedButton() const​

void setColor(uint8_t newColor)​

uint8_t getButtonCount() const​