Struct ClickArea 

pub struct ClickArea { /* private fields */ }

Transparent rectangular hit area with an optional click callback.

Designed for the QML MouseArea lowering shipped by phase QT-04d (docs/qt-support/04d-mousearea.md). The widget intentionally has no visual: its Widget::draw is a no-op so the area never occludes its parent’s pixels. Hit-testing happens on Event::PressRelease.

Implementations

impl ClickArea

pub fn new(bounds: Rect) -> Self

Create a click area covering bounds.

pub fn set_on_click<F: FnMut(&mut Self) + 'static>(&mut self, handler: F)

Register a callback invoked when a click is released inside bounds. The callback receives &mut self so it can mutate the click area itself (e.g. resize after a click) — though QT-04d’s emitted closures typically only mutate ScreenState captured by reference.

Trait Implementations

impl Widget for ClickArea

fn draw(&self, _renderer: &mut dyn Renderer)

No-op — the click area is transparent.

fn bounds(&self) -> Rect

Return the area this widget occupies relative to its parent.

fn handle_event(&mut self, event: &Event) -> bool

Handle an event and return true if it was consumed.

fn clear_region(&mut self) -> Option<Rect>

Return a region (in draw/landscape coordinates) that should be restored from the pristine background copy, or None.

fn set_bounds(&mut self, _bounds: Rect)

Called by the LPAR-10 layout pass to notify this widget of its layout-computed bounds.

fn widget_font_mut(&mut self) -> Option<&mut WidgetFont>

Expose this widget’s font slot for cascade-driven font resolution (FONT-05 §5.B).