Struct ScrollState 

pub struct ScrollState {
    pub offset_x: u16,
    pub offset_y: u16,
    pub content_width: u16,
    pub content_height: u16,
    pub viewport_width: u16,
    pub viewport_height: u16,
}

Scroll state for a single widget.

Fields

offset_x: u16

Horizontal scroll offset in cells.

offset_y: u16

Vertical scroll offset in cells.

content_width: u16

Total content width in cells.

content_height: u16

Total content height in cells.

viewport_width: u16

Viewport width in cells.

viewport_height: u16

Viewport height in cells.

Implementations

impl ScrollState

pub const fn new( content_width: u16, content_height: u16, viewport_width: u16, viewport_height: u16, ) -> Self

Create a new scroll state.

pub const fn can_scroll_x(&self) -> bool

Whether horizontal scrolling is possible.

pub const fn can_scroll_y(&self) -> bool

Whether vertical scrolling is possible.

pub fn max_offset_x(&self) -> u16

Maximum horizontal scroll offset.

pub fn max_offset_y(&self) -> u16

Maximum vertical scroll offset.

pub fn visible_rect(&self) -> Rect

The visible content rectangle (in content coordinates).

Trait Implementations

impl Clone for ScrollState

fn clone(&self) -> ScrollState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScrollState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ScrollState

fn default() -> ScrollState

Returns the “default value” for a type.

impl PartialEq for ScrollState

fn eq(&self, other: &ScrollState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ScrollState