UITouchSlider

Class

Source: UITouchSlider.h

Inherits from: UITouchElement

Description

Touch-optimized slider widget.

Provides touch input support and the Entity update/draw interface. Construct with position/size; register with UIManager::addElement for touch routing. Value range: 0-100 States: Idle, Dragging Events: OnValueChanged, OnDragStart, OnDragEnd

Inheritance

UITouchElement → UITouchSlider

Methods

explicit UITouchSlider(int16_t x, int16_t y, uint16_t w, uint16_t h, uint8_t initialValue)

Description:

Construct a new UITouchSlider

Parameters:

• x: X position
• y: Y position
• w: Width
• h: Height
• initialValue: Initial value (0-100)

void setColors(Color track, Color thumb)

Description:

Set track and thumb colors

Parameters:

• track: Color for track
• thumb: Color for thumb

void setOnValueChanged(SliderCallback callback)

Description:

Set the OnValueChanged callback

Parameters:

• callback: Function to call when value changes (receives new value)

void setOnDragStart(SliderCallback callback)

Description:

Set the OnDragStart callback

Parameters:

• callback: Function to call when drag starts

void setOnDragEnd(SliderCallback callback)

Description:

Set the OnDragEnd callback

Parameters:

• callback: Function to call when drag ends

SliderCallback getOnValueChanged() const

Description:

Get the OnValueChanged callback

Returns: The current OnValueChanged callback

SliderCallback getOnDragStart() const

Description:

Get the OnDragStart callback

Returns: The current OnDragStart callback

SliderCallback getOnDragEnd() const

Description:

Get the OnDragEnd callback

Returns: The current OnDragEnd callback

Color getTrackColor() const

Description:

Get track color

Returns: Current track color

Color getThumbColor() const

Description:

Get thumb color

Returns: Current thumb color

Color getDisabledColor() const

Description:

Get disabled color

Returns: Current disabled color

uint8_t getValue() const

Description:

Get the current value

Returns: Current value (0-100)

void setValue(uint8_t newValue)

Description:

Set the value

Parameters:

• newValue: New value (0-100)

uint8_t getPreviousValue() const

Description:

Get the previous value

Returns: Previous value (0-100)

bool hasValueChanged() const

Description:

Check if value changed since last frame

Returns: true if value changed

bool processEvent(const pixelroot32::input::TouchEvent& event)

Description:

Process a touch event

Parameters:

• event: The touch event to process

Returns: true if event was consumed by this slider

void draw(pixelroot32::graphics::Renderer& renderer)

Description:

Render the slider

Parameters:

• renderer: Reference to the renderer

void reset()

Description:

Reset slider state

bool handleTouchDown(const pixelroot32::input::TouchEvent& event)

Description:

Handle touch down event

Returns: true if handled

bool handleDragMove(const pixelroot32::input::TouchEvent& event)

Description:

Handle drag move event

Returns: true if handled

bool handleTouchUp(const pixelroot32::input::TouchEvent& event)

Description:

Handle touch up event

Returns: true if handled

void updateValueFromPosition(int16_t xPos)

Description:

Update value based on X position

Parameters:

• xPos: X position

void setActive()

Description:

Set active flag

void clearActive()

Description:

Clear active flag