Trait zng_wgt_scroll::WidgetInfoExt

pub trait WidgetInfoExt {
    // Required methods
    fn is_scroll(&self) -> bool;
    fn scroll_info(&self) -> Option<ScrollInfo>;
    fn viewport(&self) -> Option<PxRect>;
}

Scroll extensions for WidgetInfo.

Required Methods

fn is_scroll(&self) -> bool

Returns true if the widget is a Scroll!.

fn scroll_info(&self) -> Option<ScrollInfo>

Returns a reference to the viewport bounds if the widget is a Scroll!.

fn viewport(&self) -> Option<PxRect>

Gets the viewport bounds relative to the scroll widget inner bounds.

The value is updated every layout and render, without requiring an info rebuild.

Implementations on Foreign Types

impl WidgetInfoExt for WidgetInfo

fn is_scroll(&self) -> bool

fn scroll_info(&self) -> Option<ScrollInfo>

fn viewport(&self) -> Option<PxRect>

Implementors